./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3198201138

<...>
NONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18009] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18009] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18009] close(4)                    = 0
[pid 18009] close(3)                    = 0
[pid 18009] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18009] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18009] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18009] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18009] open("./bus", O_RDONLY)     = 3
[pid 18009] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18009] exit_group(0)               = ?
[pid 18009] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18009, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18010 attached
, child_tidptr=0x55555606b5d0) = 18010
[pid 18010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18010] setpgid(0, 0)               = 0
[pid 18010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18010] write(3, "1000", 4)         = 4
[pid 18010] close(3)                    = 0
[pid 18010] memfd_create("syzkaller", 0) = 3
[pid 18010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18010] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18010] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18010] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18010] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18010] close(4)                    = 0
[pid 18010] close(3)                    = 0
[pid 18010] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18010] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18010] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18010] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18010] open("./bus", O_RDONLY)     = 3
[pid 18010] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18010] exit_group(0)               = ?
[pid 18010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18011
./strace-static-x86_64: Process 18011 attached
[pid 18011] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18011] setpgid(0, 0)               = 0
[pid 18011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18011] write(3, "1000", 4)         = 4
[pid 18011] close(3)                    = 0
[pid 18011] memfd_create("syzkaller", 0) = 3
[pid 18011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18011] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18011] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18011] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18011] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18011] close(4)                    = 0
[pid 18011] close(3)                    = 0
[pid 18011] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18011] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18011] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18011] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18011] open("./bus", O_RDONLY)     = 3
[pid 18011] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18011] exit_group(0)               = ?
[pid 18011] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18011, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18012 attached
, child_tidptr=0x55555606b5d0) = 18012
[pid 18012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18012] setpgid(0, 0)               = 0
[pid 18012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18012] write(3, "1000", 4)         = 4
[pid 18012] close(3)                    = 0
[pid 18012] memfd_create("syzkaller", 0) = 3
[pid 18012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18012] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18012] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18012] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18012] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18012] close(4)                    = 0
[pid 18012] close(3)                    = 0
[pid 18012] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18012] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18012] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18012] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18012] open("./bus", O_RDONLY)     = 3
[pid 18012] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18012] exit_group(0)               = ?
[pid 18012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18013 attached
, child_tidptr=0x55555606b5d0) = 18013
[pid 18013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18013] setpgid(0, 0)               = 0
[pid 18013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18013] write(3, "1000", 4)         = 4
[pid 18013] close(3)                    = 0
[pid 18013] memfd_create("syzkaller", 0) = 3
[pid 18013] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18013] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18013] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18013] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18013] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18013] close(4)                    = 0
[pid 18013] close(3)                    = 0
[pid 18013] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18013] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18013] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18013] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18013] open("./bus", O_RDONLY)     = 3
[pid 18013] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18013] exit_group(0)               = ?
[pid 18013] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18013, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18014 attached
 <unfinished ...>
[pid 18014] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18014
[pid 18014] <... prctl resumed>)        = 0
[pid 18014] setpgid(0, 0)               = 0
[pid 18014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18014] write(3, "1000", 4)         = 4
[pid 18014] close(3)                    = 0
[pid 18014] memfd_create("syzkaller", 0) = 3
[pid 18014] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18014] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18014] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18014] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18014] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18014] close(4)                    = 0
[pid 18014] close(3)                    = 0
[pid 18014] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18014] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18014] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18014] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18014] open("./bus", O_RDONLY)     = 3
[pid 18014] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18014] exit_group(0)               = ?
[pid 18014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18015 attached
, child_tidptr=0x55555606b5d0) = 18015
[pid 18015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18015] setpgid(0, 0)               = 0
[pid 18015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18015] write(3, "1000", 4)         = 4
[pid 18015] close(3)                    = 0
[pid 18015] memfd_create("syzkaller", 0) = 3
[pid 18015] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18015] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18015] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18015] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18015] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18015] close(4)                    = 0
[pid 18015] close(3)                    = 0
[pid 18015] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18015] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18015] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18015] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18015] open("./bus", O_RDONLY)     = 3
[pid 18015] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18015] exit_group(0)               = ?
[pid 18015] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18015, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18016 attached
, child_tidptr=0x55555606b5d0) = 18016
[pid 18016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18016] setpgid(0, 0)               = 0
[pid 18016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18016] write(3, "1000", 4)         = 4
[pid 18016] close(3)                    = 0
[pid 18016] memfd_create("syzkaller", 0) = 3
[pid 18016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18016] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18016] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18016] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18016] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18016] close(4)                    = 0
[pid 18016] close(3)                    = 0
[pid 18016] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18016] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18016] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18016] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18016] open("./bus", O_RDONLY)     = 3
[pid 18016] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18016] exit_group(0)               = ?
[pid 18016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18017
./strace-static-x86_64: Process 18017 attached
[pid 18017] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18017] setpgid(0, 0)               = 0
[pid 18017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18017] write(3, "1000", 4)         = 4
[pid 18017] close(3)                    = 0
[pid 18017] memfd_create("syzkaller", 0) = 3
[pid 18017] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18017] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18017] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18017] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18017] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18017] close(4)                    = 0
[pid 18017] close(3)                    = 0
[pid 18017] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18017] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18017] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18017] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18017] open("./bus", O_RDONLY)     = 3
[pid 18017] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18017] exit_group(0)               = ?
[pid 18017] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18017, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18018 attached
, child_tidptr=0x55555606b5d0) = 18018
[pid 18018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18018] setpgid(0, 0)               = 0
[pid 18018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18018] write(3, "1000", 4)         = 4
[pid 18018] close(3)                    = 0
[pid 18018] memfd_create("syzkaller", 0) = 3
[pid 18018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18018] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18018] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18018] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18018] close(4)                    = 0
[pid 18018] close(3)                    = 0
[pid 18018] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18018] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18018] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18018] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18018] open("./bus", O_RDONLY)     = 3
[pid 18018] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18018] exit_group(0)               = ?
[pid 18018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18019 attached
, child_tidptr=0x55555606b5d0) = 18019
[pid 18019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18019] setpgid(0, 0)               = 0
[pid 18019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18019] write(3, "1000", 4)         = 4
[pid 18019] close(3)                    = 0
[pid 18019] memfd_create("syzkaller", 0) = 3
[pid 18019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18019] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18019] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18019] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18019] close(4)                    = 0
[pid 18019] close(3)                    = 0
[pid 18019] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18019] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18019] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18019] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18019] open("./bus", O_RDONLY)     = 3
[pid 18019] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18019] exit_group(0)               = ?
[pid 18019] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18019, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18020 attached
, child_tidptr=0x55555606b5d0) = 18020
[pid 18020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18020] setpgid(0, 0)               = 0
[pid 18020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18020] write(3, "1000", 4)         = 4
[pid 18020] close(3)                    = 0
[pid 18020] memfd_create("syzkaller", 0) = 3
[pid 18020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18020] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18020] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18020] close(4)                    = 0
[pid 18020] close(3)                    = 0
[pid 18020] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18020] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18020] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18020] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18020] open("./bus", O_RDONLY)     = 3
[pid 18020] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18020] exit_group(0)               = ?
[pid 18020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18021 attached
, child_tidptr=0x55555606b5d0) = 18021
[pid 18021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18021] setpgid(0, 0)               = 0
[pid 18021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18021] write(3, "1000", 4)         = 4
[pid 18021] close(3)                    = 0
[pid 18021] memfd_create("syzkaller", 0) = 3
[pid 18021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18021] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18021] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18021] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18021] close(4)                    = 0
[pid 18021] close(3)                    = 0
[pid 18021] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18021] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18021] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18021] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18021] open("./bus", O_RDONLY)     = 3
[pid 18021] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18021] exit_group(0)               = ?
[pid 18021] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18021, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18022 attached
, child_tidptr=0x55555606b5d0) = 18022
[pid 18022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18022] setpgid(0, 0)               = 0
[pid 18022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18022] write(3, "1000", 4)         = 4
[pid 18022] close(3)                    = 0
[pid 18022] memfd_create("syzkaller", 0) = 3
[pid 18022] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18022] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18022] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18022] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18022] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18022] close(4)                    = 0
[pid 18022] close(3)                    = 0
[pid 18022] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18022] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18022] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18022] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18022] open("./bus", O_RDONLY)     = 3
[pid 18022] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18022] exit_group(0)               = ?
[pid 18022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18023 attached
, child_tidptr=0x55555606b5d0) = 18023
[pid 18023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18023] setpgid(0, 0)               = 0
[pid 18023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18023] write(3, "1000", 4)         = 4
[pid 18023] close(3)                    = 0
[pid 18023] memfd_create("syzkaller", 0) = 3
[pid 18023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18023] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18023] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18023] close(4)                    = 0
[pid 18023] close(3)                    = 0
[pid 18023] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18023] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18023] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18023] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18023] open("./bus", O_RDONLY)     = 3
[pid 18023] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18023] exit_group(0)               = ?
[pid 18023] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18023, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18024 attached
, child_tidptr=0x55555606b5d0) = 18024
[pid 18024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18024] setpgid(0, 0)               = 0
[pid 18024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18024] write(3, "1000", 4)         = 4
[pid 18024] close(3)                    = 0
[pid 18024] memfd_create("syzkaller", 0) = 3
[pid 18024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18024] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18024] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18024] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18024] close(4)                    = 0
[pid 18024] close(3)                    = 0
[pid 18024] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18024] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18024] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18024] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18024] open("./bus", O_RDONLY)     = 3
[pid 18024] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18024] exit_group(0)               = ?
[pid 18024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18025 attached
, child_tidptr=0x55555606b5d0) = 18025
[pid 18025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18025] setpgid(0, 0)               = 0
[pid 18025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18025] write(3, "1000", 4)         = 4
[pid 18025] close(3)                    = 0
[pid 18025] memfd_create("syzkaller", 0) = 3
[pid 18025] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18025] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18025] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18025] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18025] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18025] close(4)                    = 0
[pid 18025] close(3)                    = 0
[pid 18025] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18025] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18025] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18025] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18025] open("./bus", O_RDONLY)     = 3
[pid 18025] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18025] exit_group(0)               = ?
[pid 18025] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18025, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18026 attached
, child_tidptr=0x55555606b5d0) = 18026
[pid 18026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18026] setpgid(0, 0)               = 0
[pid 18026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18026] write(3, "1000", 4)         = 4
[pid 18026] close(3)                    = 0
[pid 18026] memfd_create("syzkaller", 0) = 3
[pid 18026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18026] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18026] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18026] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18026] close(4)                    = 0
[pid 18026] close(3)                    = 0
[pid 18026] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18026] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18026] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18026] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18026] open("./bus", O_RDONLY)     = 3
[pid 18026] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18026] exit_group(0)               = ?
[pid 18026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18027
./strace-static-x86_64: Process 18027 attached
[pid 18027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18027] setpgid(0, 0)               = 0
[pid 18027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18027] write(3, "1000", 4)         = 4
[pid 18027] close(3)                    = 0
[pid 18027] memfd_create("syzkaller", 0) = 3
[pid 18027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18027] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18027] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18027] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18027] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18027] close(4)                    = 0
[pid 18027] close(3)                    = 0
[pid 18027] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18027] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18027] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18027] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18027] open("./bus", O_RDONLY)     = 3
[pid 18027] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18027] exit_group(0)               = ?
[pid 18027] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18027, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18028 attached
, child_tidptr=0x55555606b5d0) = 18028
[pid 18028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18028] setpgid(0, 0)               = 0
[pid 18028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18028] write(3, "1000", 4)         = 4
[pid 18028] close(3)                    = 0
[pid 18028] memfd_create("syzkaller", 0) = 3
[pid 18028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18028] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18028] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18028] close(4)                    = 0
[pid 18028] close(3)                    = 0
[pid 18028] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18028] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18028] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18028] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18028] open("./bus", O_RDONLY)     = 3
[pid 18028] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18028] exit_group(0)               = ?
[pid 18028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18029 attached
, child_tidptr=0x55555606b5d0) = 18029
[pid 18029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18029] setpgid(0, 0)               = 0
[pid 18029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18029] write(3, "1000", 4)         = 4
[pid 18029] close(3)                    = 0
[pid 18029] memfd_create("syzkaller", 0) = 3
[pid 18029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18029] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18029] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18029] close(4)                    = 0
[pid 18029] close(3)                    = 0
[pid 18029] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18029] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18029] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18029] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18029] open("./bus", O_RDONLY)     = 3
[pid 18029] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18029] exit_group(0)               = ?
[pid 18029] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18029, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18030 attached
, child_tidptr=0x55555606b5d0) = 18030
[pid 18030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18030] setpgid(0, 0)               = 0
[pid 18030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18030] write(3, "1000", 4)         = 4
[pid 18030] close(3)                    = 0
[pid 18030] memfd_create("syzkaller", 0) = 3
[pid 18030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18030] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18030] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18030] close(4)                    = 0
[pid 18030] close(3)                    = 0
[pid 18030] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18030] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18030] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18030] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18030] open("./bus", O_RDONLY)     = 3
[pid 18030] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18030] exit_group(0)               = ?
[pid 18030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18031 attached
, child_tidptr=0x55555606b5d0) = 18031
[pid 18031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18031] setpgid(0, 0)               = 0
[pid 18031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18031] write(3, "1000", 4)         = 4
[pid 18031] close(3)                    = 0
[pid 18031] memfd_create("syzkaller", 0) = 3
[pid 18031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18031] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18031] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18031] close(4)                    = 0
[pid 18031] close(3)                    = 0
[pid 18031] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18031] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18031] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18031] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18031] open("./bus", O_RDONLY)     = 3
[pid 18031] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18031] exit_group(0)               = ?
[pid 18031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18031, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18032
./strace-static-x86_64: Process 18032 attached
[pid 18032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18032] setpgid(0, 0)               = 0
[pid 18032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18032] write(3, "1000", 4)         = 4
[pid 18032] close(3)                    = 0
[pid 18032] memfd_create("syzkaller", 0) = 3
[pid 18032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18032] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18032] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18032] close(4)                    = 0
[pid 18032] close(3)                    = 0
[pid 18032] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18032] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18032] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18032] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18032] open("./bus", O_RDONLY)     = 3
[pid 18032] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18032] exit_group(0)               = ?
[pid 18032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18033 attached
, child_tidptr=0x55555606b5d0) = 18033
[pid 18033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18033] setpgid(0, 0)               = 0
[pid 18033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18033] write(3, "1000", 4)         = 4
[pid 18033] close(3)                    = 0
[pid 18033] memfd_create("syzkaller", 0) = 3
[pid 18033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18033] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18033] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18033] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18033] close(4)                    = 0
[pid 18033] close(3)                    = 0
[pid 18033] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18033] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18033] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18033] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18033] open("./bus", O_RDONLY)     = 3
[pid 18033] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18033] exit_group(0)               = ?
[pid 18033] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18033, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18034 attached
, child_tidptr=0x55555606b5d0) = 18034
[pid 18034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18034] setpgid(0, 0)               = 0
[pid 18034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18034] write(3, "1000", 4)         = 4
[pid 18034] close(3)                    = 0
[pid 18034] memfd_create("syzkaller", 0) = 3
[pid 18034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18034] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18034] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18034] close(4)                    = 0
[pid 18034] close(3)                    = 0
[pid 18034] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18034] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18034] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18034] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18034] open("./bus", O_RDONLY)     = 3
[pid 18034] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18034] exit_group(0)               = ?
[pid 18034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18035 attached
, child_tidptr=0x55555606b5d0) = 18035
[pid 18035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18035] setpgid(0, 0)               = 0
[pid 18035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18035] write(3, "1000", 4)         = 4
[pid 18035] close(3)                    = 0
[pid 18035] memfd_create("syzkaller", 0) = 3
[pid 18035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18035] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18035] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18035] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18035] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18035] close(4)                    = 0
[pid 18035] close(3)                    = 0
[pid 18035] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18035] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18035] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18035] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18035] open("./bus", O_RDONLY)     = 3
[pid 18035] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18035] exit_group(0)               = ?
[pid 18035] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18035, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18036 attached
 <unfinished ...>
[pid 18036] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18036
[pid 18036] <... prctl resumed>)        = 0
[pid 18036] setpgid(0, 0)               = 0
[pid 18036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18036] write(3, "1000", 4)         = 4
[pid 18036] close(3)                    = 0
[pid 18036] memfd_create("syzkaller", 0) = 3
[pid 18036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18036] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18036] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18036] close(4)                    = 0
[pid 18036] close(3)                    = 0
[pid 18036] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18036] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18036] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18036] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18036] open("./bus", O_RDONLY)     = 3
[pid 18036] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18036] exit_group(0)               = ?
[pid 18036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18037
./strace-static-x86_64: Process 18037 attached
[pid 18037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18037] setpgid(0, 0)               = 0
[pid 18037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18037] write(3, "1000", 4)         = 4
[pid 18037] close(3)                    = 0
[pid 18037] memfd_create("syzkaller", 0) = 3
[pid 18037] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18037] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18037] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18037] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18037] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18037] close(4)                    = 0
[pid 18037] close(3)                    = 0
[pid 18037] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18037] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18037] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18037] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18037] open("./bus", O_RDONLY)     = 3
[pid 18037] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18037] exit_group(0)               = ?
[pid 18037] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18037, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18038 attached
 <unfinished ...>
[pid 18038] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18038
[pid 18038] <... prctl resumed>)        = 0
[pid 18038] setpgid(0, 0)               = 0
[pid 18038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18038] write(3, "1000", 4)         = 4
[pid 18038] close(3)                    = 0
[pid 18038] memfd_create("syzkaller", 0) = 3
[pid 18038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18038] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18038] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18038] close(4)                    = 0
[pid 18038] close(3)                    = 0
[pid 18038] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18038] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18038] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18038] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18038] open("./bus", O_RDONLY)     = 3
[pid 18038] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18038] exit_group(0)               = ?
[pid 18038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18039
./strace-static-x86_64: Process 18039 attached
[pid 18039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18039] setpgid(0, 0)               = 0
[pid 18039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18039] write(3, "1000", 4)         = 4
[pid 18039] close(3)                    = 0
[pid 18039] memfd_create("syzkaller", 0) = 3
[pid 18039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18039] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18039] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18039] close(4)                    = 0
[pid 18039] close(3)                    = 0
[pid 18039] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18039] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18039] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18039] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18039] open("./bus", O_RDONLY)     = 3
[pid 18039] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18039] exit_group(0)               = ?
[pid 18039] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18039, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18040 attached
, child_tidptr=0x55555606b5d0) = 18040
[pid 18040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18040] setpgid(0, 0)               = 0
[pid 18040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18040] write(3, "1000", 4)         = 4
[pid 18040] close(3)                    = 0
[pid 18040] memfd_create("syzkaller", 0) = 3
[pid 18040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18040] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18040] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18040] close(4)                    = 0
[pid 18040] close(3)                    = 0
[pid 18040] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18040] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18040] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18040] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18040] open("./bus", O_RDONLY)     = 3
[pid 18040] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18040] exit_group(0)               = ?
[pid 18040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18041
./strace-static-x86_64: Process 18041 attached
[pid 18041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18041] setpgid(0, 0)               = 0
[pid 18041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18041] write(3, "1000", 4)         = 4
[pid 18041] close(3)                    = 0
[pid 18041] memfd_create("syzkaller", 0) = 3
[pid 18041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18041] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18041] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18041] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18041] close(4)                    = 0
[pid 18041] close(3)                    = 0
[pid 18041] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18041] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18041] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18041] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18041] open("./bus", O_RDONLY)     = 3
[pid 18041] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18041] exit_group(0)               = ?
[pid 18041] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18041, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18042 attached
, child_tidptr=0x55555606b5d0) = 18042
[pid 18042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18042] setpgid(0, 0)               = 0
[pid 18042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18042] write(3, "1000", 4)         = 4
[pid 18042] close(3)                    = 0
[pid 18042] memfd_create("syzkaller", 0) = 3
[pid 18042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18042] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18042] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18042] close(4)                    = 0
[pid 18042] close(3)                    = 0
[pid 18042] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18042] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18042] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18042] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18042] open("./bus", O_RDONLY)     = 3
[pid 18042] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18042] exit_group(0)               = ?
[pid 18042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18043 attached
 <unfinished ...>
[pid 18043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18043] setpgid(0, 0)               = 0
[pid 18043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18043] write(3, "1000", 4)         = 4
[pid 18043] close(3)                    = 0
[pid 18043] memfd_create("syzkaller", 0) = 3
[pid 18043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18043
[pid 18043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18043] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18043] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18043] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18043] close(4)                    = 0
[pid 18043] close(3)                    = 0
[pid 18043] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18043] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18043] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18043] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18043] open("./bus", O_RDONLY)     = 3
[pid 18043] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18043] exit_group(0)               = ?
[pid 18043] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18043, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18044 attached
, child_tidptr=0x55555606b5d0) = 18044
[pid 18044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18044] setpgid(0, 0)               = 0
[pid 18044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18044] write(3, "1000", 4)         = 4
[pid 18044] close(3)                    = 0
[pid 18044] memfd_create("syzkaller", 0) = 3
[pid 18044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18044] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18044] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18044] close(4)                    = 0
[pid 18044] close(3)                    = 0
[pid 18044] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18044] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18044] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18044] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18044] open("./bus", O_RDONLY)     = 3
[pid 18044] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18044] exit_group(0)               = ?
[pid 18044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18045 attached
, child_tidptr=0x55555606b5d0) = 18045
[pid 18045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18045] setpgid(0, 0)               = 0
[pid 18045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18045] write(3, "1000", 4)         = 4
[pid 18045] close(3)                    = 0
[pid 18045] memfd_create("syzkaller", 0) = 3
[pid 18045] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18045] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18045] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18045] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18045] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18045] close(4)                    = 0
[pid 18045] close(3)                    = 0
[pid 18045] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18045] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18045] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18045] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18045] open("./bus", O_RDONLY)     = 3
[pid 18045] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18045] exit_group(0)               = ?
[pid 18045] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18045, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18046
./strace-static-x86_64: Process 18046 attached
[pid 18046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18046] setpgid(0, 0)               = 0
[pid 18046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18046] write(3, "1000", 4)         = 4
[pid 18046] close(3)                    = 0
[pid 18046] memfd_create("syzkaller", 0) = 3
[pid 18046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18046] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18046] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18046] close(4)                    = 0
[pid 18046] close(3)                    = 0
[pid 18046] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18046] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18046] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18046] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18046] open("./bus", O_RDONLY)     = 3
[pid 18046] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18046] exit_group(0)               = ?
[pid 18046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18047 attached
, child_tidptr=0x55555606b5d0) = 18047
[pid 18047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18047] setpgid(0, 0)               = 0
[pid 18047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18047] write(3, "1000", 4)         = 4
[pid 18047] close(3)                    = 0
[pid 18047] memfd_create("syzkaller", 0) = 3
[pid 18047] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18047] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18047] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18047] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18047] close(4)                    = 0
[pid 18047] close(3)                    = 0
[pid 18047] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18047] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18047] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18047] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18047] open("./bus", O_RDONLY)     = 3
[pid 18047] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18047] exit_group(0)               = ?
[pid 18047] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18047, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18048 attached
, child_tidptr=0x55555606b5d0) = 18048
[pid 18048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18048] setpgid(0, 0)               = 0
[pid 18048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18048] write(3, "1000", 4)         = 4
[pid 18048] close(3)                    = 0
[pid 18048] memfd_create("syzkaller", 0) = 3
[pid 18048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18048] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18048] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18048] close(4)                    = 0
[pid 18048] close(3)                    = 0
[pid 18048] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18048] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18048] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18048] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18048] open("./bus", O_RDONLY)     = 3
[pid 18048] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18048] exit_group(0)               = ?
[pid 18048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18049
./strace-static-x86_64: Process 18049 attached
[pid 18049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18049] setpgid(0, 0)               = 0
[pid 18049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18049] write(3, "1000", 4)         = 4
[pid 18049] close(3)                    = 0
[pid 18049] memfd_create("syzkaller", 0) = 3
[pid 18049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18049] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18049] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18049] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18049] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18049] close(4)                    = 0
[pid 18049] close(3)                    = 0
[pid 18049] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18049] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18049] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18049] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18049] open("./bus", O_RDONLY)     = 3
[pid 18049] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18049] exit_group(0)               = ?
[pid 18049] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18049, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18050 attached
, child_tidptr=0x55555606b5d0) = 18050
[pid 18050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18050] setpgid(0, 0)               = 0
[pid 18050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18050] write(3, "1000", 4)         = 4
[pid 18050] close(3)                    = 0
[pid 18050] memfd_create("syzkaller", 0) = 3
[pid 18050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18050] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18050] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18050] close(4)                    = 0
[pid 18050] close(3)                    = 0
[pid 18050] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18050] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18050] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18050] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18050] open("./bus", O_RDONLY)     = 3
[pid 18050] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18050] exit_group(0)               = ?
[pid 18050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18051
./strace-static-x86_64: Process 18051 attached
[pid 18051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18051] setpgid(0, 0)               = 0
[pid 18051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18051] write(3, "1000", 4)         = 4
[pid 18051] close(3)                    = 0
[pid 18051] memfd_create("syzkaller", 0) = 3
[pid 18051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18051] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18051] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18051] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18051] close(4)                    = 0
[pid 18051] close(3)                    = 0
[pid 18051] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18051] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18051] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18051] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18051] open("./bus", O_RDONLY)     = 3
[pid 18051] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18051] exit_group(0)               = ?
[pid 18051] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18051, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18052 attached
, child_tidptr=0x55555606b5d0) = 18052
[pid 18052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18052] setpgid(0, 0)               = 0
[pid 18052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18052] write(3, "1000", 4)         = 4
[pid 18052] close(3)                    = 0
[pid 18052] memfd_create("syzkaller", 0) = 3
[pid 18052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18052] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18052] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18052] close(4)                    = 0
[pid 18052] close(3)                    = 0
[pid 18052] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18052] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18052] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18052] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18052] open("./bus", O_RDONLY)     = 3
[pid 18052] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18052] exit_group(0)               = ?
[pid 18052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18053
./strace-static-x86_64: Process 18053 attached
[pid 18053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18053] setpgid(0, 0)               = 0
[pid 18053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18053] write(3, "1000", 4)         = 4
[pid 18053] close(3)                    = 0
[pid 18053] memfd_create("syzkaller", 0) = 3
[pid 18053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18053] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18053] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18053] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18053] close(4)                    = 0
[pid 18053] close(3)                    = 0
[pid 18053] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18053] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18053] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18053] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18053] open("./bus", O_RDONLY)     = 3
[pid 18053] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18053] exit_group(0)               = ?
[pid 18053] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18053, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18054 attached
, child_tidptr=0x55555606b5d0) = 18054
[pid 18054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18054] setpgid(0, 0)               = 0
[pid 18054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18054] write(3, "1000", 4)         = 4
[pid 18054] close(3)                    = 0
[pid 18054] memfd_create("syzkaller", 0) = 3
[pid 18054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18054] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18054] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18054] close(4)                    = 0
[pid 18054] close(3)                    = 0
[pid 18054] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18054] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18054] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18054] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18054] open("./bus", O_RDONLY)     = 3
[pid 18054] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18054] exit_group(0)               = ?
[pid 18054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18055
./strace-static-x86_64: Process 18055 attached
[pid 18055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18055] setpgid(0, 0)               = 0
[pid 18055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18055] write(3, "1000", 4)         = 4
[pid 18055] close(3)                    = 0
[pid 18055] memfd_create("syzkaller", 0) = 3
[pid 18055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18055] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18055] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18055] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18055] close(4)                    = 0
[pid 18055] close(3)                    = 0
[pid 18055] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18055] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18055] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18055] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18055] open("./bus", O_RDONLY)     = 3
[pid 18055] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18055] exit_group(0)               = ?
[pid 18055] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18055, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18056
./strace-static-x86_64: Process 18056 attached
[pid 18056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18056] setpgid(0, 0)               = 0
[pid 18056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18056] write(3, "1000", 4)         = 4
[pid 18056] close(3)                    = 0
[pid 18056] memfd_create("syzkaller", 0) = 3
[pid 18056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18056] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18056] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18056] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18056] close(4)                    = 0
[pid 18056] close(3)                    = 0
[pid 18056] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18056] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18056] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18056] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18056] open("./bus", O_RDONLY)     = 3
[pid 18056] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18056] exit_group(0)               = ?
[pid 18056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18057 attached
, child_tidptr=0x55555606b5d0) = 18057
[pid 18057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18057] setpgid(0, 0)               = 0
[pid 18057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18057] write(3, "1000", 4)         = 4
[pid 18057] close(3)                    = 0
[pid 18057] memfd_create("syzkaller", 0) = 3
[pid 18057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18057] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18057] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18057] close(4)                    = 0
[pid 18057] close(3)                    = 0
[pid 18057] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18057] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18057] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18057] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18057] open("./bus", O_RDONLY)     = 3
[pid 18057] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18057] exit_group(0)               = ?
[pid 18057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18057, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18058 attached
, child_tidptr=0x55555606b5d0) = 18058
[pid 18058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18058] setpgid(0, 0)               = 0
[pid 18058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18058] write(3, "1000", 4)         = 4
[pid 18058] close(3)                    = 0
[pid 18058] memfd_create("syzkaller", 0) = 3
[pid 18058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18058] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18058] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18058] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18058] close(4)                    = 0
[pid 18058] close(3)                    = 0
[pid 18058] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18058] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18058] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18058] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18058] open("./bus", O_RDONLY)     = 3
[pid 18058] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18058] exit_group(0)               = ?
[pid 18058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18059
./strace-static-x86_64: Process 18059 attached
[pid 18059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18059] setpgid(0, 0)               = 0
[pid 18059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18059] write(3, "1000", 4)         = 4
[pid 18059] close(3)                    = 0
[pid 18059] memfd_create("syzkaller", 0) = 3
[pid 18059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18059] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18059] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18059] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18059] close(4)                    = 0
[pid 18059] close(3)                    = 0
[pid 18059] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18059] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18059] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18059] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18059] open("./bus", O_RDONLY)     = 3
[pid 18059] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18059] exit_group(0)               = ?
[pid 18059] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18059, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18060
./strace-static-x86_64: Process 18060 attached
[pid 18060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18060] setpgid(0, 0)               = 0
[pid 18060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18060] write(3, "1000", 4)         = 4
[pid 18060] close(3)                    = 0
[pid 18060] memfd_create("syzkaller", 0) = 3
[pid 18060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18060] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18060] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18060] close(4)                    = 0
[pid 18060] close(3)                    = 0
[pid 18060] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18060] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18060] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18060] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18060] open("./bus", O_RDONLY)     = 3
[pid 18060] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18060] exit_group(0)               = ?
[pid 18060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18060, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18061 attached
, child_tidptr=0x55555606b5d0) = 18061
[pid 18061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18061] setpgid(0, 0)               = 0
[pid 18061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18061] write(3, "1000", 4)         = 4
[pid 18061] close(3)                    = 0
[pid 18061] memfd_create("syzkaller", 0) = 3
[pid 18061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18061] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18061] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18061] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18061] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18061] close(4)                    = 0
[pid 18061] close(3)                    = 0
[pid 18061] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18061] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18061] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18061] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18061] open("./bus", O_RDONLY)     = 3
[pid 18061] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18061] exit_group(0)               = ?
[pid 18061] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18061, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18062 attached
, child_tidptr=0x55555606b5d0) = 18062
[pid 18062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18062] setpgid(0, 0)               = 0
[pid 18062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18062] write(3, "1000", 4)         = 4
[pid 18062] close(3)                    = 0
[pid 18062] memfd_create("syzkaller", 0) = 3
[pid 18062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18062] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18062] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18062] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18062] close(4)                    = 0
[pid 18062] close(3)                    = 0
[pid 18062] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18062] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18062] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18062] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18062] open("./bus", O_RDONLY)     = 3
[pid 18062] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18062] exit_group(0)               = ?
[pid 18062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18063 attached
, child_tidptr=0x55555606b5d0) = 18063
[pid 18063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18063] setpgid(0, 0)               = 0
[pid 18063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18063] write(3, "1000", 4)         = 4
[pid 18063] close(3)                    = 0
[pid 18063] memfd_create("syzkaller", 0) = 3
[pid 18063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18063] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18063] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18063] close(4)                    = 0
[pid 18063] close(3)                    = 0
[pid 18063] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18063] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18063] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18063] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18063] open("./bus", O_RDONLY)     = 3
[pid 18063] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18063] exit_group(0)               = ?
[pid 18063] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18063, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18064 attached
, child_tidptr=0x55555606b5d0) = 18064
[pid 18064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18064] setpgid(0, 0)               = 0
[pid 18064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18064] write(3, "1000", 4)         = 4
[pid 18064] close(3)                    = 0
[pid 18064] memfd_create("syzkaller", 0) = 3
[pid 18064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18064] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18064] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18064] close(4)                    = 0
[pid 18064] close(3)                    = 0
[pid 18064] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18064] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18064] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18064] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18064] open("./bus", O_RDONLY)     = 3
[pid 18064] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18064] exit_group(0)               = ?
[pid 18064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18065 attached
 <unfinished ...>
[pid 18065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18065] setpgid(0, 0)               = 0
[pid 18065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18065
[pid 18065] <... openat resumed>)       = 3
[pid 18065] write(3, "1000", 4)         = 4
[pid 18065] close(3)                    = 0
[pid 18065] memfd_create("syzkaller", 0) = 3
[pid 18065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18065] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18065] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18065] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18065] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18065] close(4)                    = 0
[pid 18065] close(3)                    = 0
[pid 18065] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18065] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18065] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18065] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18065] open("./bus", O_RDONLY)     = 3
[pid 18065] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18065] exit_group(0)               = ?
[pid 18065] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18065, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18066
./strace-static-x86_64: Process 18066 attached
[pid 18066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18066] setpgid(0, 0)               = 0
[pid 18066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18066] write(3, "1000", 4)         = 4
[pid 18066] close(3)                    = 0
[pid 18066] memfd_create("syzkaller", 0) = 3
[pid 18066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18066] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18066] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18066] close(4)                    = 0
[pid 18066] close(3)                    = 0
[pid 18066] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18066] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18066] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18066] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18066] open("./bus", O_RDONLY)     = 3
[pid 18066] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18066] exit_group(0)               = ?
[pid 18066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18067 attached
 <unfinished ...>
[pid 18067] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18067
[pid 18067] <... prctl resumed>)        = 0
[pid 18067] setpgid(0, 0)               = 0
[pid 18067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18067] write(3, "1000", 4)         = 4
[pid 18067] close(3)                    = 0
[pid 18067] memfd_create("syzkaller", 0) = 3
[pid 18067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18067] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18067] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18067] close(4)                    = 0
[pid 18067] close(3)                    = 0
[pid 18067] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18067] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18067] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18067] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18067] open("./bus", O_RDONLY)     = 3
[pid 18067] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18067] exit_group(0)               = ?
[pid 18067] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18067, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18068
./strace-static-x86_64: Process 18068 attached
[pid 18068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18068] setpgid(0, 0)               = 0
[pid 18068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18068] write(3, "1000", 4)         = 4
[pid 18068] close(3)                    = 0
[pid 18068] memfd_create("syzkaller", 0) = 3
[pid 18068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18068] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18068] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18068] close(4)                    = 0
[pid 18068] close(3)                    = 0
[pid 18068] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18068] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18068] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18068] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18068] open("./bus", O_RDONLY)     = 3
[pid 18068] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18068] exit_group(0)               = ?
[pid 18068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18069 attached
, child_tidptr=0x55555606b5d0) = 18069
[pid 18069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18069] setpgid(0, 0)               = 0
[pid 18069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18069] write(3, "1000", 4)         = 4
[pid 18069] close(3)                    = 0
[pid 18069] memfd_create("syzkaller", 0) = 3
[pid 18069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18069] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18069] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18069] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18069] close(4)                    = 0
[pid 18069] close(3)                    = 0
[pid 18069] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18069] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18069] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18069] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18069] open("./bus", O_RDONLY)     = 3
[pid 18069] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18069] exit_group(0)               = ?
[pid 18069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18069, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18070
./strace-static-x86_64: Process 18070 attached
[pid 18070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18070] setpgid(0, 0)               = 0
[pid 18070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18070] write(3, "1000", 4)         = 4
[pid 18070] close(3)                    = 0
[pid 18070] memfd_create("syzkaller", 0) = 3
[pid 18070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18070] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18070] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18070] close(4)                    = 0
[pid 18070] close(3)                    = 0
[pid 18070] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18070] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18070] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18070] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18070] open("./bus", O_RDONLY)     = 3
[pid 18070] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18070] exit_group(0)               = ?
[pid 18070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18071 attached
, child_tidptr=0x55555606b5d0) = 18071
[pid 18071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18071] setpgid(0, 0)               = 0
[pid 18071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18071] write(3, "1000", 4)         = 4
[pid 18071] close(3)                    = 0
[pid 18071] memfd_create("syzkaller", 0) = 3
[pid 18071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18071] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18071] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18071] close(4)                    = 0
[pid 18071] close(3)                    = 0
[pid 18071] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18071] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18071] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18071] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18071] open("./bus", O_RDONLY)     = 3
[pid 18071] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18071] exit_group(0)               = ?
[pid 18071] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18071, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18072 attached
, child_tidptr=0x55555606b5d0) = 18072
[pid 18072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18072] setpgid(0, 0)               = 0
[pid 18072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18072] write(3, "1000", 4)         = 4
[pid 18072] close(3)                    = 0
[pid 18072] memfd_create("syzkaller", 0) = 3
[pid 18072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18072] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18072] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18072] close(4)                    = 0
[pid 18072] close(3)                    = 0
[pid 18072] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18072] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18072] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18072] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18072] open("./bus", O_RDONLY)     = 3
[pid 18072] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18072] exit_group(0)               = ?
[pid 18072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18073
./strace-static-x86_64: Process 18073 attached
[pid 18073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18073] setpgid(0, 0)               = 0
[pid 18073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18073] write(3, "1000", 4)         = 4
[pid 18073] close(3)                    = 0
[pid 18073] memfd_create("syzkaller", 0) = 3
[pid 18073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18073] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18073] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18073] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18073] close(4)                    = 0
[pid 18073] close(3)                    = 0
[pid 18073] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18073] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18073] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18073] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18073] open("./bus", O_RDONLY)     = 3
[pid 18073] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18073] exit_group(0)               = ?
[pid 18073] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18073, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18074
./strace-static-x86_64: Process 18074 attached
[pid 18074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18074] setpgid(0, 0)               = 0
[pid 18074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18074] write(3, "1000", 4)         = 4
[pid 18074] close(3)                    = 0
[pid 18074] memfd_create("syzkaller", 0) = 3
[pid 18074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18074] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18074] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18074] close(4)                    = 0
[pid 18074] close(3)                    = 0
[pid 18074] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18074] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18074] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18074] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18074] open("./bus", O_RDONLY)     = 3
[pid 18074] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18074] exit_group(0)               = ?
[pid 18074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18075 attached
, child_tidptr=0x55555606b5d0) = 18075
[pid 18075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18075] setpgid(0, 0)               = 0
[pid 18075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18075] write(3, "1000", 4)         = 4
[pid 18075] close(3)                    = 0
[pid 18075] memfd_create("syzkaller", 0) = 3
[pid 18075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18075] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18075] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18075] close(4)                    = 0
[pid 18075] close(3)                    = 0
[pid 18075] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18075] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18075] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18075] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18075] open("./bus", O_RDONLY)     = 3
[pid 18075] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18075] exit_group(0)               = ?
[pid 18075] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18075, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18076 attached
, child_tidptr=0x55555606b5d0) = 18076
[pid 18076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18076] setpgid(0, 0)               = 0
[pid 18076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18076] write(3, "1000", 4)         = 4
[pid 18076] close(3)                    = 0
[pid 18076] memfd_create("syzkaller", 0) = 3
[pid 18076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18076] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18076] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18076] close(4)                    = 0
[pid 18076] close(3)                    = 0
[pid 18076] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18076] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18076] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18076] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18076] open("./bus", O_RDONLY)     = 3
[pid 18076] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18076] exit_group(0)               = ?
[pid 18076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18077 attached
, child_tidptr=0x55555606b5d0) = 18077
[pid 18077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18077] setpgid(0, 0)               = 0
[pid 18077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18077] write(3, "1000", 4)         = 4
[pid 18077] close(3)                    = 0
[pid 18077] memfd_create("syzkaller", 0) = 3
[pid 18077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18077] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18077] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18077] close(4)                    = 0
[pid 18077] close(3)                    = 0
[pid 18077] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18077] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18077] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18077] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18077] open("./bus", O_RDONLY)     = 3
[pid 18077] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18077] exit_group(0)               = ?
[pid 18077] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18077, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18078 attached
, child_tidptr=0x55555606b5d0) = 18078
[pid 18078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18078] setpgid(0, 0)               = 0
[pid 18078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18078] write(3, "1000", 4)         = 4
[pid 18078] close(3)                    = 0
[pid 18078] memfd_create("syzkaller", 0) = 3
[pid 18078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18078] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18078] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18078] close(4)                    = 0
[pid 18078] close(3)                    = 0
[pid 18078] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18078] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18078] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18078] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18078] open("./bus", O_RDONLY)     = 3
[pid 18078] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18078] exit_group(0)               = ?
[pid 18078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18079 attached
, child_tidptr=0x55555606b5d0) = 18079
[pid 18079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18079] setpgid(0, 0)               = 0
[pid 18079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18079] write(3, "1000", 4)         = 4
[pid 18079] close(3)                    = 0
[pid 18079] memfd_create("syzkaller", 0) = 3
[pid 18079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18079] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18079] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18079] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18079] close(4)                    = 0
[pid 18079] close(3)                    = 0
[pid 18079] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18079] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18079] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18079] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18079] open("./bus", O_RDONLY)     = 3
[pid 18079] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18079] exit_group(0)               = ?
[pid 18079] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18079, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18080 attached
, child_tidptr=0x55555606b5d0) = 18080
[pid 18080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18080] setpgid(0, 0)               = 0
[pid 18080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18080] write(3, "1000", 4)         = 4
[pid 18080] close(3)                    = 0
[pid 18080] memfd_create("syzkaller", 0) = 3
[pid 18080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18080] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18080] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18080] close(4)                    = 0
[pid 18080] close(3)                    = 0
[pid 18080] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18080] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18080] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18080] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18080] open("./bus", O_RDONLY)     = 3
[pid 18080] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18080] exit_group(0)               = ?
[pid 18080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18081 attached
, child_tidptr=0x55555606b5d0) = 18081
[pid 18081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18081] setpgid(0, 0)               = 0
[pid 18081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18081] write(3, "1000", 4)         = 4
[pid 18081] close(3)                    = 0
[pid 18081] memfd_create("syzkaller", 0) = 3
[pid 18081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18081] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18081] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18081] close(4)                    = 0
[pid 18081] close(3)                    = 0
[pid 18081] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18081] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18081] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18081] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18081] open("./bus", O_RDONLY)     = 3
[pid 18081] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18081] exit_group(0)               = ?
[pid 18081] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18081, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18082 attached
, child_tidptr=0x55555606b5d0) = 18082
[pid 18082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18082] setpgid(0, 0)               = 0
[pid 18082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18082] write(3, "1000", 4)         = 4
[pid 18082] close(3)                    = 0
[pid 18082] memfd_create("syzkaller", 0) = 3
[pid 18082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18082] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18082] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18082] close(4)                    = 0
[pid 18082] close(3)                    = 0
[pid 18082] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18082] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18082] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18082] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18082] open("./bus", O_RDONLY)     = 3
[pid 18082] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18082] exit_group(0)               = ?
[pid 18082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18083 attached
, child_tidptr=0x55555606b5d0) = 18083
[pid 18083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18083] setpgid(0, 0)               = 0
[pid 18083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18083] write(3, "1000", 4)         = 4
[pid 18083] close(3)                    = 0
[pid 18083] memfd_create("syzkaller", 0) = 3
[pid 18083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18083] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18083] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18083] close(4)                    = 0
[pid 18083] close(3)                    = 0
[pid 18083] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18083] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18083] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18083] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18083] open("./bus", O_RDONLY)     = 3
[pid 18083] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18083] exit_group(0)               = ?
[pid 18083] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18083, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18084 attached
, child_tidptr=0x55555606b5d0) = 18084
[pid 18084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18084] setpgid(0, 0)               = 0
[pid 18084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18084] write(3, "1000", 4)         = 4
[pid 18084] close(3)                    = 0
[pid 18084] memfd_create("syzkaller", 0) = 3
[pid 18084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18084] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18084] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18084] close(4)                    = 0
[pid 18084] close(3)                    = 0
[pid 18084] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18084] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18084] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18084] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18084] open("./bus", O_RDONLY)     = 3
[pid 18084] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18084] exit_group(0)               = ?
[pid 18084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18085
./strace-static-x86_64: Process 18085 attached
[pid 18085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18085] setpgid(0, 0)               = 0
[pid 18085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18085] write(3, "1000", 4)         = 4
[pid 18085] close(3)                    = 0
[pid 18085] memfd_create("syzkaller", 0) = 3
[pid 18085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18085] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18085] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18085] close(4)                    = 0
[pid 18085] close(3)                    = 0
[pid 18085] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18085] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18085] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18085] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18085] open("./bus", O_RDONLY)     = 3
[pid 18085] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18085] exit_group(0)               = ?
[pid 18085] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18085, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18086
./strace-static-x86_64: Process 18086 attached
[pid 18086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18086] setpgid(0, 0)               = 0
[pid 18086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18086] write(3, "1000", 4)         = 4
[pid 18086] close(3)                    = 0
[pid 18086] memfd_create("syzkaller", 0) = 3
[pid 18086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18086] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18086] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18086] close(4)                    = 0
[pid 18086] close(3)                    = 0
[pid 18086] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18086] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18086] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18086] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18086] open("./bus", O_RDONLY)     = 3
[pid 18086] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18086] exit_group(0)               = ?
[pid 18086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18087 attached
, child_tidptr=0x55555606b5d0) = 18087
[pid 18087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18087] setpgid(0, 0)               = 0
[pid 18087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18087] write(3, "1000", 4)         = 4
[pid 18087] close(3)                    = 0
[pid 18087] memfd_create("syzkaller", 0) = 3
[pid 18087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18087] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18087] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18087] close(4)                    = 0
[pid 18087] close(3)                    = 0
[pid 18087] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18087] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18087] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18087] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18087] open("./bus", O_RDONLY)     = 3
[pid 18087] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18087] exit_group(0)               = ?
[pid 18087] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18087, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18088 attached
, child_tidptr=0x55555606b5d0) = 18088
[pid 18088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18088] setpgid(0, 0)               = 0
[pid 18088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18088] write(3, "1000", 4)         = 4
[pid 18088] close(3)                    = 0
[pid 18088] memfd_create("syzkaller", 0) = 3
[pid 18088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18088] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18088] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18088] close(4)                    = 0
[pid 18088] close(3)                    = 0
[pid 18088] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18088] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18088] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18088] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18088] open("./bus", O_RDONLY)     = 3
[pid 18088] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18088] exit_group(0)               = ?
[pid 18088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18089 attached
, child_tidptr=0x55555606b5d0) = 18089
[pid 18089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18089] setpgid(0, 0)               = 0
[pid 18089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18089] write(3, "1000", 4)         = 4
[pid 18089] close(3)                    = 0
[pid 18089] memfd_create("syzkaller", 0) = 3
[pid 18089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18089] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18089] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18089] close(4)                    = 0
[pid 18089] close(3)                    = 0
[pid 18089] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18089] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18089] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18089] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18089] open("./bus", O_RDONLY)     = 3
[pid 18089] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18089] exit_group(0)               = ?
[pid 18089] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18089, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18090 attached
, child_tidptr=0x55555606b5d0) = 18090
[pid 18090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18090] setpgid(0, 0)               = 0
[pid 18090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18090] write(3, "1000", 4)         = 4
[pid 18090] close(3)                    = 0
[pid 18090] memfd_create("syzkaller", 0) = 3
[pid 18090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18090] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18090] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18090] close(4)                    = 0
[pid 18090] close(3)                    = 0
[pid 18090] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18090] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18090] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18090] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18090] open("./bus", O_RDONLY)     = 3
[pid 18090] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18090] exit_group(0)               = ?
[pid 18090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18091 attached
, child_tidptr=0x55555606b5d0) = 18091
[pid 18091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18091] setpgid(0, 0)               = 0
[pid 18091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18091] write(3, "1000", 4)         = 4
[pid 18091] close(3)                    = 0
[pid 18091] memfd_create("syzkaller", 0) = 3
[pid 18091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18091] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18091] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18091] close(4)                    = 0
[pid 18091] close(3)                    = 0
[pid 18091] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18091] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18091] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18091] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18091] open("./bus", O_RDONLY)     = 3
[pid 18091] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18091] exit_group(0)               = ?
[pid 18091] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18091, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18092
./strace-static-x86_64: Process 18092 attached
[pid 18092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18092] setpgid(0, 0)               = 0
[pid 18092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18092] write(3, "1000", 4)         = 4
[pid 18092] close(3)                    = 0
[pid 18092] memfd_create("syzkaller", 0) = 3
[pid 18092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18092] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18092] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18092] close(4)                    = 0
[pid 18092] close(3)                    = 0
[pid 18092] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18092] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18092] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18092] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18092] open("./bus", O_RDONLY)     = 3
[pid 18092] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18092] exit_group(0)               = ?
[pid 18092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18093
./strace-static-x86_64: Process 18093 attached
[pid 18093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18093] setpgid(0, 0)               = 0
[pid 18093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18093] write(3, "1000", 4)         = 4
[pid 18093] close(3)                    = 0
[pid 18093] memfd_create("syzkaller", 0) = 3
[pid 18093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18093] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18093] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18093] close(4)                    = 0
[pid 18093] close(3)                    = 0
[pid 18093] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18093] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18093] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18093] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18093] open("./bus", O_RDONLY)     = 3
[pid 18093] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18093] exit_group(0)               = ?
[pid 18093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18093, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18094 attached
, child_tidptr=0x55555606b5d0) = 18094
[pid 18094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18094] setpgid(0, 0)               = 0
[pid 18094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18094] write(3, "1000", 4)         = 4
[pid 18094] close(3)                    = 0
[pid 18094] memfd_create("syzkaller", 0) = 3
[pid 18094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18094] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18094] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18094] close(4)                    = 0
[pid 18094] close(3)                    = 0
[pid 18094] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18094] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18094] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18094] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18094] open("./bus", O_RDONLY)     = 3
[pid 18094] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18094] exit_group(0)               = ?
[pid 18094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18095 attached
, child_tidptr=0x55555606b5d0) = 18095
[pid 18095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18095] setpgid(0, 0)               = 0
[pid 18095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18095] write(3, "1000", 4)         = 4
[pid 18095] close(3)                    = 0
[pid 18095] memfd_create("syzkaller", 0) = 3
[pid 18095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18095] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18095] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18095] close(4)                    = 0
[pid 18095] close(3)                    = 0
[pid 18095] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18095] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18095] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18095] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18095] open("./bus", O_RDONLY)     = 3
[pid 18095] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18095] exit_group(0)               = ?
[pid 18095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18095, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18096 attached
, child_tidptr=0x55555606b5d0) = 18096
[pid 18096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18096] setpgid(0, 0)               = 0
[pid 18096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18096] write(3, "1000", 4)         = 4
[pid 18096] close(3)                    = 0
[pid 18096] memfd_create("syzkaller", 0) = 3
[pid 18096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18096] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18096] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18096] close(4)                    = 0
[pid 18096] close(3)                    = 0
[pid 18096] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18096] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18096] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18096] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18096] open("./bus", O_RDONLY)     = 3
[pid 18096] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18096] exit_group(0)               = ?
[pid 18096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18097 attached
, child_tidptr=0x55555606b5d0) = 18097
[pid 18097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18097] setpgid(0, 0)               = 0
[pid 18097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18097] write(3, "1000", 4)         = 4
[pid 18097] close(3)                    = 0
[pid 18097] memfd_create("syzkaller", 0) = 3
[pid 18097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18097] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18097] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18097] close(4)                    = 0
[pid 18097] close(3)                    = 0
[pid 18097] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18097] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18097] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18097] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18097] open("./bus", O_RDONLY)     = 3
[pid 18097] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18097] exit_group(0)               = ?
[pid 18097] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18097, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18098 attached
, child_tidptr=0x55555606b5d0) = 18098
[pid 18098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18098] setpgid(0, 0)               = 0
[pid 18098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18098] write(3, "1000", 4)         = 4
[pid 18098] close(3)                    = 0
[pid 18098] memfd_create("syzkaller", 0) = 3
[pid 18098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18098] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18098] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18098] close(4)                    = 0
[pid 18098] close(3)                    = 0
[pid 18098] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18098] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18098] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18098] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18098] open("./bus", O_RDONLY)     = 3
[pid 18098] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18098] exit_group(0)               = ?
[pid 18098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18099
./strace-static-x86_64: Process 18099 attached
[pid 18099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18099] setpgid(0, 0)               = 0
[pid 18099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18099] write(3, "1000", 4)         = 4
[pid 18099] close(3)                    = 0
[pid 18099] memfd_create("syzkaller", 0) = 3
[pid 18099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18099] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18099] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18099] close(4)                    = 0
[pid 18099] close(3)                    = 0
[pid 18099] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18099] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18099] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18099] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18099] open("./bus", O_RDONLY)     = 3
[pid 18099] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18099] exit_group(0)               = ?
[pid 18099] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18099, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18100 attached
, child_tidptr=0x55555606b5d0) = 18100
[pid 18100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18100] setpgid(0, 0)               = 0
[pid 18100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18100] write(3, "1000", 4)         = 4
[pid 18100] close(3)                    = 0
[pid 18100] memfd_create("syzkaller", 0) = 3
[pid 18100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18100] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18100] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18100] close(4)                    = 0
[pid 18100] close(3)                    = 0
[pid 18100] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18100] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18100] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18100] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18100] open("./bus", O_RDONLY)     = 3
[pid 18100] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18100] exit_group(0)               = ?
[pid 18100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18101 attached
, child_tidptr=0x55555606b5d0) = 18101
[pid 18101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18101] setpgid(0, 0)               = 0
[pid 18101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18101] write(3, "1000", 4)         = 4
[pid 18101] close(3)                    = 0
[pid 18101] memfd_create("syzkaller", 0) = 3
[pid 18101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18101] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18101] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18101] close(4)                    = 0
[pid 18101] close(3)                    = 0
[pid 18101] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18101] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18101] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18101] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18101] open("./bus", O_RDONLY)     = 3
[pid 18101] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18101] exit_group(0)               = ?
[pid 18101] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18101, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18102 attached
, child_tidptr=0x55555606b5d0) = 18102
[pid 18102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18102] setpgid(0, 0)               = 0
[pid 18102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18102] write(3, "1000", 4)         = 4
[pid 18102] close(3)                    = 0
[pid 18102] memfd_create("syzkaller", 0) = 3
[pid 18102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18102] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18102] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18102] close(4)                    = 0
[pid 18102] close(3)                    = 0
[pid 18102] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18102] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18102] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18102] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18102] open("./bus", O_RDONLY)     = 3
[pid 18102] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18102] exit_group(0)               = ?
[pid 18102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18103 attached
, child_tidptr=0x55555606b5d0) = 18103
[pid 18103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18103] setpgid(0, 0)               = 0
[pid 18103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18103] write(3, "1000", 4)         = 4
[pid 18103] close(3)                    = 0
[pid 18103] memfd_create("syzkaller", 0) = 3
[pid 18103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18103] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18103] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18103] close(4)                    = 0
[pid 18103] close(3)                    = 0
[pid 18103] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18103] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18103] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18103] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18103] open("./bus", O_RDONLY)     = 3
[pid 18103] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18103] exit_group(0)               = ?
[pid 18103] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18103, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18104
./strace-static-x86_64: Process 18104 attached
[pid 18104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18104] setpgid(0, 0)               = 0
[pid 18104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18104] write(3, "1000", 4)         = 4
[pid 18104] close(3)                    = 0
[pid 18104] memfd_create("syzkaller", 0) = 3
[pid 18104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18104] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18104] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18104] close(4)                    = 0
[pid 18104] close(3)                    = 0
[pid 18104] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18104] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18104] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18104] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18104] open("./bus", O_RDONLY)     = 3
[pid 18104] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18104] exit_group(0)               = ?
[pid 18104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18105
./strace-static-x86_64: Process 18105 attached
[pid 18105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18105] setpgid(0, 0)               = 0
[pid 18105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18105] write(3, "1000", 4)         = 4
[pid 18105] close(3)                    = 0
[pid 18105] memfd_create("syzkaller", 0) = 3
[pid 18105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18105] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18105] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18105] close(4)                    = 0
[pid 18105] close(3)                    = 0
[pid 18105] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18105] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18105] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18105] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18105] open("./bus", O_RDONLY)     = 3
[pid 18105] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18105] exit_group(0)               = ?
[pid 18105] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18105, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18106 attached
, child_tidptr=0x55555606b5d0) = 18106
[pid 18106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18106] setpgid(0, 0)               = 0
[pid 18106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18106] write(3, "1000", 4)         = 4
[pid 18106] close(3)                    = 0
[pid 18106] memfd_create("syzkaller", 0) = 3
[pid 18106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18106] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18106] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18106] close(4)                    = 0
[pid 18106] close(3)                    = 0
[pid 18106] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18106] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18106] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18106] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18106] open("./bus", O_RDONLY)     = 3
[pid 18106] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18106] exit_group(0)               = ?
[pid 18106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18107 attached
, child_tidptr=0x55555606b5d0) = 18107
[pid 18107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18107] setpgid(0, 0)               = 0
[pid 18107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18107] write(3, "1000", 4)         = 4
[pid 18107] close(3)                    = 0
[pid 18107] memfd_create("syzkaller", 0) = 3
[pid 18107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18107] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18107] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18107] close(4)                    = 0
[pid 18107] close(3)                    = 0
[pid 18107] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18107] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18107] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18107] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18107] open("./bus", O_RDONLY)     = 3
[pid 18107] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18107] exit_group(0)               = ?
[pid 18107] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18107, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18108 attached
, child_tidptr=0x55555606b5d0) = 18108
[pid 18108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18108] setpgid(0, 0)               = 0
[pid 18108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18108] write(3, "1000", 4)         = 4
[pid 18108] close(3)                    = 0
[pid 18108] memfd_create("syzkaller", 0) = 3
[pid 18108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18108] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18108] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18108] close(4)                    = 0
[pid 18108] close(3)                    = 0
[pid 18108] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18108] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18108] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18108] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18108] open("./bus", O_RDONLY)     = 3
[pid 18108] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18108] exit_group(0)               = ?
[pid 18108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18109 attached
, child_tidptr=0x55555606b5d0) = 18109
[pid 18109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18109] setpgid(0, 0)               = 0
[pid 18109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18109] write(3, "1000", 4)         = 4
[pid 18109] close(3)                    = 0
[pid 18109] memfd_create("syzkaller", 0) = 3
[pid 18109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18109] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18109] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18109] close(4)                    = 0
[pid 18109] close(3)                    = 0
[pid 18109] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18109] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18109] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18109] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18109] open("./bus", O_RDONLY)     = 3
[pid 18109] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18109] exit_group(0)               = ?
[pid 18109] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18109, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18110 attached
, child_tidptr=0x55555606b5d0) = 18110
[pid 18110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18110] setpgid(0, 0)               = 0
[pid 18110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18110] write(3, "1000", 4)         = 4
[pid 18110] close(3)                    = 0
[pid 18110] memfd_create("syzkaller", 0) = 3
[pid 18110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18110] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18110] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18110] close(4)                    = 0
[pid 18110] close(3)                    = 0
[pid 18110] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18110] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18110] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18110] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18110] open("./bus", O_RDONLY)     = 3
[pid 18110] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18110] exit_group(0)               = ?
[pid 18110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18111 attached
, child_tidptr=0x55555606b5d0) = 18111
[pid 18111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18111] setpgid(0, 0)               = 0
[pid 18111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18111] write(3, "1000", 4)         = 4
[pid 18111] close(3)                    = 0
[pid 18111] memfd_create("syzkaller", 0) = 3
[pid 18111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18111] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18111] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18111] close(4)                    = 0
[pid 18111] close(3)                    = 0
[pid 18111] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18111] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18111] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18111] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18111] open("./bus", O_RDONLY)     = 3
[pid 18111] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18111] exit_group(0)               = ?
[pid 18111] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18111, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18112 attached
, child_tidptr=0x55555606b5d0) = 18112
[pid 18112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18112] setpgid(0, 0)               = 0
[pid 18112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18112] write(3, "1000", 4)         = 4
[pid 18112] close(3)                    = 0
[pid 18112] memfd_create("syzkaller", 0) = 3
[pid 18112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18112] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18112] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18112] close(4)                    = 0
[pid 18112] close(3)                    = 0
[pid 18112] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18112] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18112] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18112] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18112] open("./bus", O_RDONLY)     = 3
[pid 18112] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18112] exit_group(0)               = ?
[pid 18112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18113
./strace-static-x86_64: Process 18113 attached
[pid 18113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18113] setpgid(0, 0)               = 0
[pid 18113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18113] write(3, "1000", 4)         = 4
[pid 18113] close(3)                    = 0
[pid 18113] memfd_create("syzkaller", 0) = 3
[pid 18113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18113] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18113] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18113] close(4)                    = 0
[pid 18113] close(3)                    = 0
[pid 18113] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18113] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18113] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18113] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18113] open("./bus", O_RDONLY)     = 3
[pid 18113] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18113] exit_group(0)               = ?
[pid 18113] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18113, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18114 attached
, child_tidptr=0x55555606b5d0) = 18114
[pid 18114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18114] setpgid(0, 0)               = 0
[pid 18114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18114] write(3, "1000", 4)         = 4
[pid 18114] close(3)                    = 0
[pid 18114] memfd_create("syzkaller", 0) = 3
[pid 18114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18114] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18114] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18114] close(4)                    = 0
[pid 18114] close(3)                    = 0
[pid 18114] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18114] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18114] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18114] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18114] open("./bus", O_RDONLY)     = 3
[pid 18114] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18114] exit_group(0)               = ?
[pid 18114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18115
./strace-static-x86_64: Process 18115 attached
[pid 18115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18115] setpgid(0, 0)               = 0
[pid 18115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18115] write(3, "1000", 4)         = 4
[pid 18115] close(3)                    = 0
[pid 18115] memfd_create("syzkaller", 0) = 3
[pid 18115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18115] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18115] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18115] close(4)                    = 0
[pid 18115] close(3)                    = 0
[pid 18115] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18115] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18115] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18115] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18115] open("./bus", O_RDONLY)     = 3
[pid 18115] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18115] exit_group(0)               = ?
[pid 18115] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18115, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18116
./strace-static-x86_64: Process 18116 attached
[pid 18116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18116] setpgid(0, 0)               = 0
[pid 18116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18116] write(3, "1000", 4)         = 4
[pid 18116] close(3)                    = 0
[pid 18116] memfd_create("syzkaller", 0) = 3
[pid 18116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18116] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18116] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18116] close(4)                    = 0
[pid 18116] close(3)                    = 0
[pid 18116] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18116] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18116] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18116] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18116] open("./bus", O_RDONLY)     = 3
[pid 18116] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18116] exit_group(0)               = ?
[pid 18116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18117 attached
, child_tidptr=0x55555606b5d0) = 18117
[pid 18117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18117] setpgid(0, 0)               = 0
[pid 18117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18117] write(3, "1000", 4)         = 4
[pid 18117] close(3)                    = 0
[pid 18117] memfd_create("syzkaller", 0) = 3
[pid 18117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18117] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18117] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18117] close(4)                    = 0
[pid 18117] close(3)                    = 0
[pid 18117] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18117] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18117] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18117] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18117] open("./bus", O_RDONLY)     = 3
[pid 18117] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18117] exit_group(0)               = ?
[pid 18117] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18117, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18118 attached
, child_tidptr=0x55555606b5d0) = 18118
[pid 18118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18118] setpgid(0, 0)               = 0
[pid 18118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18118] write(3, "1000", 4)         = 4
[pid 18118] close(3)                    = 0
[pid 18118] memfd_create("syzkaller", 0) = 3
[pid 18118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18118] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18118] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18118] close(4)                    = 0
[pid 18118] close(3)                    = 0
[pid 18118] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18118] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18118] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18118] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18118] open("./bus", O_RDONLY)     = 3
[pid 18118] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18118] exit_group(0)               = ?
[pid 18118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18119 attached
, child_tidptr=0x55555606b5d0) = 18119
[pid 18119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18119] setpgid(0, 0)               = 0
[pid 18119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18119] write(3, "1000", 4)         = 4
[pid 18119] close(3)                    = 0
[pid 18119] memfd_create("syzkaller", 0) = 3
[pid 18119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18119] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18119] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18119] close(4)                    = 0
[pid 18119] close(3)                    = 0
[pid 18119] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18119] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18119] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18119] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18119] open("./bus", O_RDONLY)     = 3
[pid 18119] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18119] exit_group(0)               = ?
[pid 18119] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18119, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18120 attached
, child_tidptr=0x55555606b5d0) = 18120
[pid 18120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18120] setpgid(0, 0)               = 0
[pid 18120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18120] write(3, "1000", 4)         = 4
[pid 18120] close(3)                    = 0
[pid 18120] memfd_create("syzkaller", 0) = 3
[pid 18120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18120] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18120] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18120] close(4)                    = 0
[pid 18120] close(3)                    = 0
[pid 18120] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18120] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18120] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18120] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18120] open("./bus", O_RDONLY)     = 3
[pid 18120] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18120] exit_group(0)               = ?
[pid 18120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18121
./strace-static-x86_64: Process 18121 attached
[pid 18121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18121] setpgid(0, 0)               = 0
[pid 18121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18121] write(3, "1000", 4)         = 4
[pid 18121] close(3)                    = 0
[pid 18121] memfd_create("syzkaller", 0) = 3
[pid 18121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18121] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18121] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18121] close(4)                    = 0
[pid 18121] close(3)                    = 0
[pid 18121] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18121] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18121] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18121] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18121] open("./bus", O_RDONLY)     = 3
[pid 18121] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18121] exit_group(0)               = ?
[pid 18121] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18121, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18122 attached
, child_tidptr=0x55555606b5d0) = 18122
[pid 18122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18122] setpgid(0, 0)               = 0
[pid 18122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18122] write(3, "1000", 4)         = 4
[pid 18122] close(3)                    = 0
[pid 18122] memfd_create("syzkaller", 0) = 3
[pid 18122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18122] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18122] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18122] close(4)                    = 0
[pid 18122] close(3)                    = 0
[pid 18122] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18122] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18122] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18122] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18122] open("./bus", O_RDONLY)     = 3
[pid 18122] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18122] exit_group(0)               = ?
[pid 18122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18123 attached
, child_tidptr=0x55555606b5d0) = 18123
[pid 18123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18123] setpgid(0, 0)               = 0
[pid 18123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18123] write(3, "1000", 4)         = 4
[pid 18123] close(3)                    = 0
[pid 18123] memfd_create("syzkaller", 0) = 3
[pid 18123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18123] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18123] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18123] close(4)                    = 0
[pid 18123] close(3)                    = 0
[pid 18123] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18123] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18123] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18123] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18123] open("./bus", O_RDONLY)     = 3
[pid 18123] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18123] exit_group(0)               = ?
[pid 18123] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18123, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18124 attached
, child_tidptr=0x55555606b5d0) = 18124
[pid 18124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18124] setpgid(0, 0)               = 0
[pid 18124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18124] write(3, "1000", 4)         = 4
[pid 18124] close(3)                    = 0
[pid 18124] memfd_create("syzkaller", 0) = 3
[pid 18124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18124] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18124] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18124] close(4)                    = 0
[pid 18124] close(3)                    = 0
[pid 18124] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18124] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18124] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18124] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18124] open("./bus", O_RDONLY)     = 3
[pid 18124] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18124] exit_group(0)               = ?
[pid 18124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18125
./strace-static-x86_64: Process 18125 attached
[pid 18125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18125] setpgid(0, 0)               = 0
[pid 18125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18125] write(3, "1000", 4)         = 4
[pid 18125] close(3)                    = 0
[pid 18125] memfd_create("syzkaller", 0) = 3
[pid 18125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18125] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18125] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18125] close(4)                    = 0
[pid 18125] close(3)                    = 0
[pid 18125] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18125] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18125] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18125] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18125] open("./bus", O_RDONLY)     = 3
[pid 18125] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18125] exit_group(0)               = ?
[pid 18125] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18125, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18126
./strace-static-x86_64: Process 18126 attached
[pid 18126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18126] setpgid(0, 0)               = 0
[pid 18126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18126] write(3, "1000", 4)         = 4
[pid 18126] close(3)                    = 0
[pid 18126] memfd_create("syzkaller", 0) = 3
[pid 18126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18126] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18126] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18126] close(4)                    = 0
[pid 18126] close(3)                    = 0
[pid 18126] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18126] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18126] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18126] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18126] open("./bus", O_RDONLY)     = 3
[pid 18126] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18126] exit_group(0)               = ?
[pid 18126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18127 attached
, child_tidptr=0x55555606b5d0) = 18127
[pid 18127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18127] setpgid(0, 0)               = 0
[pid 18127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18127] write(3, "1000", 4)         = 4
[pid 18127] close(3)                    = 0
[pid 18127] memfd_create("syzkaller", 0) = 3
[pid 18127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18127] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18127] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18127] close(4)                    = 0
[pid 18127] close(3)                    = 0
[pid 18127] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18127] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18127] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18127] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18127] open("./bus", O_RDONLY)     = 3
[pid 18127] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18127] exit_group(0)               = ?
[pid 18127] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18127, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18128
./strace-static-x86_64: Process 18128 attached
[pid 18128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18128] setpgid(0, 0)               = 0
[pid 18128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18128] write(3, "1000", 4)         = 4
[pid 18128] close(3)                    = 0
[pid 18128] memfd_create("syzkaller", 0) = 3
[pid 18128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18128] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18128] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18128] close(4)                    = 0
[pid 18128] close(3)                    = 0
[pid 18128] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18128] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18128] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18128] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18128] open("./bus", O_RDONLY)     = 3
[pid 18128] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18128] exit_group(0)               = ?
[pid 18128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18129 attached
, child_tidptr=0x55555606b5d0) = 18129
[pid 18129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18129] setpgid(0, 0)               = 0
[pid 18129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18129] write(3, "1000", 4)         = 4
[pid 18129] close(3)                    = 0
[pid 18129] memfd_create("syzkaller", 0) = 3
[pid 18129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18129] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18129] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18129] close(4)                    = 0
[pid 18129] close(3)                    = 0
[pid 18129] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18129] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18129] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18129] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18129] open("./bus", O_RDONLY)     = 3
[pid 18129] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18129] exit_group(0)               = ?
[pid 18129] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18129, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18130 attached
, child_tidptr=0x55555606b5d0) = 18130
[pid 18130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18130] setpgid(0, 0)               = 0
[pid 18130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18130] write(3, "1000", 4)         = 4
[pid 18130] close(3)                    = 0
[pid 18130] memfd_create("syzkaller", 0) = 3
[pid 18130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18130] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18130] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18130] close(4)                    = 0
[pid 18130] close(3)                    = 0
[pid 18130] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18130] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18130] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18130] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18130] open("./bus", O_RDONLY)     = 3
[pid 18130] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18130] exit_group(0)               = ?
[pid 18130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18131 attached
, child_tidptr=0x55555606b5d0) = 18131
[pid 18131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18131] setpgid(0, 0)               = 0
[pid 18131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18131] write(3, "1000", 4)         = 4
[pid 18131] close(3)                    = 0
[pid 18131] memfd_create("syzkaller", 0) = 3
[pid 18131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18131] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18131] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18131] close(4)                    = 0
[pid 18131] close(3)                    = 0
[pid 18131] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18131] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18131] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18131] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18131] open("./bus", O_RDONLY)     = 3
[pid 18131] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18131] exit_group(0)               = ?
[pid 18131] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18131, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18132
./strace-static-x86_64: Process 18132 attached
[pid 18132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18132] setpgid(0, 0)               = 0
[pid 18132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18132] write(3, "1000", 4)         = 4
[pid 18132] close(3)                    = 0
[pid 18132] memfd_create("syzkaller", 0) = 3
[pid 18132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18132] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18132] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18132] close(4)                    = 0
[pid 18132] close(3)                    = 0
[pid 18132] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18132] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18132] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18132] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18132] open("./bus", O_RDONLY)     = 3
[pid 18132] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18132] exit_group(0)               = ?
[pid 18132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18132, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18133 attached
, child_tidptr=0x55555606b5d0) = 18133
[pid 18133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18133] setpgid(0, 0)               = 0
[pid 18133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18133] write(3, "1000", 4)         = 4
[pid 18133] close(3)                    = 0
[pid 18133] memfd_create("syzkaller", 0) = 3
[pid 18133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18133] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18133] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18133] close(4)                    = 0
[pid 18133] close(3)                    = 0
[pid 18133] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18133] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18133] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18133] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18133] open("./bus", O_RDONLY)     = 3
[pid 18133] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18133] exit_group(0)               = ?
[pid 18133] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18133, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18134 attached
, child_tidptr=0x55555606b5d0) = 18134
[pid 18134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18134] setpgid(0, 0)               = 0
[pid 18134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18134] write(3, "1000", 4)         = 4
[pid 18134] close(3)                    = 0
[pid 18134] memfd_create("syzkaller", 0) = 3
[pid 18134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18134] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18134] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18134] close(4)                    = 0
[pid 18134] close(3)                    = 0
[pid 18134] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18134] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18134] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18134] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18134] open("./bus", O_RDONLY)     = 3
[pid 18134] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18134] exit_group(0)               = ?
[pid 18134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18135 attached
, child_tidptr=0x55555606b5d0) = 18135
[pid 18135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18135] setpgid(0, 0)               = 0
[pid 18135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18135] write(3, "1000", 4)         = 4
[pid 18135] close(3)                    = 0
[pid 18135] memfd_create("syzkaller", 0) = 3
[pid 18135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18135] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18135] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18135] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18135] close(4)                    = 0
[pid 18135] close(3)                    = 0
[pid 18135] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18135] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18135] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18135] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18135] open("./bus", O_RDONLY)     = 3
[pid 18135] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18135] exit_group(0)               = ?
[pid 18135] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18135, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18136
./strace-static-x86_64: Process 18136 attached
[pid 18136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18136] setpgid(0, 0)               = 0
[pid 18136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18136] write(3, "1000", 4)         = 4
[pid 18136] close(3)                    = 0
[pid 18136] memfd_create("syzkaller", 0) = 3
[pid 18136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18136] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18136] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18136] close(4)                    = 0
[pid 18136] close(3)                    = 0
[pid 18136] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18136] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18136] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18136] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18136] open("./bus", O_RDONLY)     = 3
[pid 18136] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18136] exit_group(0)               = ?
[pid 18136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18137 attached
, child_tidptr=0x55555606b5d0) = 18137
[pid 18137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18137] setpgid(0, 0)               = 0
[pid 18137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18137] write(3, "1000", 4)         = 4
[pid 18137] close(3)                    = 0
[pid 18137] memfd_create("syzkaller", 0) = 3
[pid 18137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18137] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18137] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18137] close(4)                    = 0
[pid 18137] close(3)                    = 0
[pid 18137] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18137] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18137] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18137] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18137] open("./bus", O_RDONLY)     = 3
[pid 18137] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18137] exit_group(0)               = ?
[pid 18137] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18137, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18138 attached
, child_tidptr=0x55555606b5d0) = 18138
[pid 18138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18138] setpgid(0, 0)               = 0
[pid 18138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18138] write(3, "1000", 4)         = 4
[pid 18138] close(3)                    = 0
[pid 18138] memfd_create("syzkaller", 0) = 3
[pid 18138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18138] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18138] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18138] close(4)                    = 0
[pid 18138] close(3)                    = 0
[pid 18138] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18138] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18138] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18138] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18138] open("./bus", O_RDONLY)     = 3
[pid 18138] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18138] exit_group(0)               = ?
[pid 18138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18139 attached
, child_tidptr=0x55555606b5d0) = 18139
[pid 18139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18139] setpgid(0, 0)               = 0
[pid 18139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18139] write(3, "1000", 4)         = 4
[pid 18139] close(3)                    = 0
[pid 18139] memfd_create("syzkaller", 0) = 3
[pid 18139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18139] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18139] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18139] close(4)                    = 0
[pid 18139] close(3)                    = 0
[pid 18139] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18139] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18139] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18139] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18139] open("./bus", O_RDONLY)     = 3
[pid 18139] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18139] exit_group(0)               = ?
[pid 18139] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18139, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18140
./strace-static-x86_64: Process 18140 attached
[pid 18140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18140] setpgid(0, 0)               = 0
[pid 18140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18140] write(3, "1000", 4)         = 4
[pid 18140] close(3)                    = 0
[pid 18140] memfd_create("syzkaller", 0) = 3
[pid 18140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18140] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18140] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18140] close(4)                    = 0
[pid 18140] close(3)                    = 0
[pid 18140] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18140] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18140] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18140] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18140] open("./bus", O_RDONLY)     = 3
[pid 18140] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18140] exit_group(0)               = ?
[pid 18140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18141 attached
, child_tidptr=0x55555606b5d0) = 18141
[pid 18141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18141] setpgid(0, 0)               = 0
[pid 18141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18141] write(3, "1000", 4)         = 4
[pid 18141] close(3)                    = 0
[pid 18141] memfd_create("syzkaller", 0) = 3
[pid 18141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18141] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18141] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18141] close(4)                    = 0
[pid 18141] close(3)                    = 0
[pid 18141] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18141] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18141] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18141] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18141] open("./bus", O_RDONLY)     = 3
[pid 18141] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18141] exit_group(0)               = ?
[pid 18141] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18141, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18142 attached
, child_tidptr=0x55555606b5d0) = 18142
[pid 18142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18142] setpgid(0, 0)               = 0
[pid 18142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18142] write(3, "1000", 4)         = 4
[pid 18142] close(3)                    = 0
[pid 18142] memfd_create("syzkaller", 0) = 3
[pid 18142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18142] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18142] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18142] close(4)                    = 0
[pid 18142] close(3)                    = 0
[pid 18142] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18142] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18142] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18142] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18142] open("./bus", O_RDONLY)     = 3
[pid 18142] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18142] exit_group(0)               = ?
[pid 18142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18143 attached
, child_tidptr=0x55555606b5d0) = 18143
[pid 18143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18143] setpgid(0, 0)               = 0
[pid 18143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18143] write(3, "1000", 4)         = 4
[pid 18143] close(3)                    = 0
[pid 18143] memfd_create("syzkaller", 0) = 3
[pid 18143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18143] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18143] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18143] close(4)                    = 0
[pid 18143] close(3)                    = 0
[pid 18143] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18143] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18143] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18143] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18143] open("./bus", O_RDONLY)     = 3
[pid 18143] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18143] exit_group(0)               = ?
[pid 18143] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18143, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18144
./strace-static-x86_64: Process 18144 attached
[pid 18144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18144] setpgid(0, 0)               = 0
[pid 18144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18144] write(3, "1000", 4)         = 4
[pid 18144] close(3)                    = 0
[pid 18144] memfd_create("syzkaller", 0) = 3
[pid 18144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18144] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18144] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18144] close(4)                    = 0
[pid 18144] close(3)                    = 0
[pid 18144] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18144] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18144] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18144] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18144] open("./bus", O_RDONLY)     = 3
[pid 18144] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18144] exit_group(0)               = ?
[pid 18144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18145
./strace-static-x86_64: Process 18145 attached
[pid 18145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18145] setpgid(0, 0)               = 0
[pid 18145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18145] write(3, "1000", 4)         = 4
[pid 18145] close(3)                    = 0
[pid 18145] memfd_create("syzkaller", 0) = 3
[pid 18145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18145] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18145] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18145] close(4)                    = 0
[pid 18145] close(3)                    = 0
[pid 18145] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18145] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18145] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18145] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18145] open("./bus", O_RDONLY)     = 3
[pid 18145] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18145] exit_group(0)               = ?
[pid 18145] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18145, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18146 attached
, child_tidptr=0x55555606b5d0) = 18146
[pid 18146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18146] setpgid(0, 0)               = 0
[pid 18146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18146] write(3, "1000", 4)         = 4
[pid 18146] close(3)                    = 0
[pid 18146] memfd_create("syzkaller", 0) = 3
[pid 18146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18146] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18146] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18146] close(4)                    = 0
[pid 18146] close(3)                    = 0
[pid 18146] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18146] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18146] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18146] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18146] open("./bus", O_RDONLY)     = 3
[pid 18146] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18146] exit_group(0)               = ?
[pid 18146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18147 attached
, child_tidptr=0x55555606b5d0) = 18147
[pid 18147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18147] setpgid(0, 0)               = 0
[pid 18147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18147] write(3, "1000", 4)         = 4
[pid 18147] close(3)                    = 0
[pid 18147] memfd_create("syzkaller", 0) = 3
[pid 18147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18147] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18147] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18147] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18147] close(4)                    = 0
[pid 18147] close(3)                    = 0
[pid 18147] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18147] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18147] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18147] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18147] open("./bus", O_RDONLY)     = 3
[pid 18147] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18147] exit_group(0)               = ?
[pid 18147] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18147, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18148 attached
, child_tidptr=0x55555606b5d0) = 18148
[pid 18148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18148] setpgid(0, 0)               = 0
[pid 18148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18148] write(3, "1000", 4)         = 4
[pid 18148] close(3)                    = 0
[pid 18148] memfd_create("syzkaller", 0) = 3
[pid 18148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18148] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18148] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18148] close(4)                    = 0
[pid 18148] close(3)                    = 0
[pid 18148] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18148] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18148] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18148] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18148] open("./bus", O_RDONLY)     = 3
[pid 18148] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18148] exit_group(0)               = ?
[pid 18148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18149 attached
, child_tidptr=0x55555606b5d0) = 18149
[pid 18149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18149] setpgid(0, 0)               = 0
[pid 18149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18149] write(3, "1000", 4)         = 4
[pid 18149] close(3)                    = 0
[pid 18149] memfd_create("syzkaller", 0) = 3
[pid 18149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18149] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18149] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18149] close(4)                    = 0
[pid 18149] close(3)                    = 0
[pid 18149] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18149] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18149] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18149] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18149] open("./bus", O_RDONLY)     = 3
[pid 18149] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18149] exit_group(0)               = ?
[pid 18149] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18149, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18150 attached
, child_tidptr=0x55555606b5d0) = 18150
[pid 18150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18150] setpgid(0, 0)               = 0
[pid 18150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18150] write(3, "1000", 4)         = 4
[pid 18150] close(3)                    = 0
[pid 18150] memfd_create("syzkaller", 0) = 3
[pid 18150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18150] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18150] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18150] close(4)                    = 0
[pid 18150] close(3)                    = 0
[pid 18150] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18150] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18150] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18150] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18150] open("./bus", O_RDONLY)     = 3
[pid 18150] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18150] exit_group(0)               = ?
[pid 18150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18151 attached
, child_tidptr=0x55555606b5d0) = 18151
[pid 18151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18151] setpgid(0, 0)               = 0
[pid 18151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18151] write(3, "1000", 4)         = 4
[pid 18151] close(3)                    = 0
[pid 18151] memfd_create("syzkaller", 0) = 3
[pid 18151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18151] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18151] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18151] close(4)                    = 0
[pid 18151] close(3)                    = 0
[pid 18151] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18151] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18151] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18151] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18151] open("./bus", O_RDONLY)     = 3
[pid 18151] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18151] exit_group(0)               = ?
[pid 18151] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18151, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18152 attached
, child_tidptr=0x55555606b5d0) = 18152
[pid 18152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18152] setpgid(0, 0)               = 0
[pid 18152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18152] write(3, "1000", 4)         = 4
[pid 18152] close(3)                    = 0
[pid 18152] memfd_create("syzkaller", 0) = 3
[pid 18152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18152] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18152] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18152] close(4)                    = 0
[pid 18152] close(3)                    = 0
[pid 18152] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18152] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18152] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18152] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18152] open("./bus", O_RDONLY)     = 3
[pid 18152] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18152] exit_group(0)               = ?
[pid 18152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18153 attached
, child_tidptr=0x55555606b5d0) = 18153
[pid 18153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18153] setpgid(0, 0)               = 0
[pid 18153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18153] write(3, "1000", 4)         = 4
[pid 18153] close(3)                    = 0
[pid 18153] memfd_create("syzkaller", 0) = 3
[pid 18153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18153] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18153] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18153] close(4)                    = 0
[pid 18153] close(3)                    = 0
[pid 18153] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18153] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18153] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18153] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18153] open("./bus", O_RDONLY)     = 3
[pid 18153] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18153] exit_group(0)               = ?
[pid 18153] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18153, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18154
./strace-static-x86_64: Process 18154 attached
[pid 18154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18154] setpgid(0, 0)               = 0
[pid 18154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18154] write(3, "1000", 4)         = 4
[pid 18154] close(3)                    = 0
[pid 18154] memfd_create("syzkaller", 0) = 3
[pid 18154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18154] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18154] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18154] close(4)                    = 0
[pid 18154] close(3)                    = 0
[pid 18154] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18154] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18154] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18154] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18154] open("./bus", O_RDONLY)     = 3
[pid 18154] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18154] exit_group(0)               = ?
[pid 18154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18155
./strace-static-x86_64: Process 18155 attached
[pid 18155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18155] setpgid(0, 0)               = 0
[pid 18155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18155] write(3, "1000", 4)         = 4
[pid 18155] close(3)                    = 0
[pid 18155] memfd_create("syzkaller", 0) = 3
[pid 18155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18155] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18155] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18155] close(4)                    = 0
[pid 18155] close(3)                    = 0
[pid 18155] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18155] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18155] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18155] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18155] open("./bus", O_RDONLY)     = 3
[pid 18155] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18155] exit_group(0)               = ?
[pid 18155] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18155, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18156 attached
, child_tidptr=0x55555606b5d0) = 18156
[pid 18156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18156] setpgid(0, 0)               = 0
[pid 18156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18156] write(3, "1000", 4)         = 4
[pid 18156] close(3)                    = 0
[pid 18156] memfd_create("syzkaller", 0) = 3
[pid 18156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18156] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18156] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18156] close(4)                    = 0
[pid 18156] close(3)                    = 0
[pid 18156] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18156] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18156] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18156] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18156] open("./bus", O_RDONLY)     = 3
[pid 18156] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18156] exit_group(0)               = ?
[pid 18156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18157
./strace-static-x86_64: Process 18157 attached
[pid 18157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18157] setpgid(0, 0)               = 0
[pid 18157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18157] write(3, "1000", 4)         = 4
[pid 18157] close(3)                    = 0
[pid 18157] memfd_create("syzkaller", 0) = 3
[pid 18157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18157] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18157] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18157] close(4)                    = 0
[pid 18157] close(3)                    = 0
[pid 18157] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18157] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18157] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18157] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18157] open("./bus", O_RDONLY)     = 3
[pid 18157] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18157] exit_group(0)               = ?
[pid 18157] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18157, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18158 attached
, child_tidptr=0x55555606b5d0) = 18158
[pid 18158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18158] setpgid(0, 0)               = 0
[pid 18158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18158] write(3, "1000", 4)         = 4
[pid 18158] close(3)                    = 0
[pid 18158] memfd_create("syzkaller", 0) = 3
[pid 18158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18158] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18158] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18158] close(4)                    = 0
[pid 18158] close(3)                    = 0
[pid 18158] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18158] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18158] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18158] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18158] open("./bus", O_RDONLY)     = 3
[pid 18158] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18158] exit_group(0)               = ?
[pid 18158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18159 attached
, child_tidptr=0x55555606b5d0) = 18159
[pid 18159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18159] setpgid(0, 0)               = 0
[pid 18159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18159] write(3, "1000", 4)         = 4
[pid 18159] close(3)                    = 0
[pid 18159] memfd_create("syzkaller", 0) = 3
[pid 18159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18159] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18159] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18159] close(4)                    = 0
[pid 18159] close(3)                    = 0
[pid 18159] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18159] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18159] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18159] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18159] open("./bus", O_RDONLY)     = 3
[pid 18159] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18159] exit_group(0)               = ?
[pid 18159] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18159, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18160 attached
, child_tidptr=0x55555606b5d0) = 18160
[pid 18160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18160] setpgid(0, 0)               = 0
[pid 18160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18160] write(3, "1000", 4)         = 4
[pid 18160] close(3)                    = 0
[pid 18160] memfd_create("syzkaller", 0) = 3
[pid 18160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18160] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18160] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18160] close(4)                    = 0
[pid 18160] close(3)                    = 0
[pid 18160] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18160] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18160] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18160] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18160] open("./bus", O_RDONLY)     = 3
[pid 18160] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18160] exit_group(0)               = ?
[pid 18160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18161 attached
, child_tidptr=0x55555606b5d0) = 18161
[pid 18161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18161] setpgid(0, 0)               = 0
[pid 18161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18161] write(3, "1000", 4)         = 4
[pid 18161] close(3)                    = 0
[pid 18161] memfd_create("syzkaller", 0) = 3
[pid 18161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18161] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18161] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18161] close(4)                    = 0
[pid 18161] close(3)                    = 0
[pid 18161] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18161] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18161] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18161] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18161] open("./bus", O_RDONLY)     = 3
[pid 18161] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18161] exit_group(0)               = ?
[pid 18161] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18161, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18162 attached
, child_tidptr=0x55555606b5d0) = 18162
[pid 18162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18162] setpgid(0, 0)               = 0
[pid 18162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18162] write(3, "1000", 4)         = 4
[pid 18162] close(3)                    = 0
[pid 18162] memfd_create("syzkaller", 0) = 3
[pid 18162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18162] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18162] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18162] close(4)                    = 0
[pid 18162] close(3)                    = 0
[pid 18162] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18162] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18162] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18162] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18162] open("./bus", O_RDONLY)     = 3
[pid 18162] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18162] exit_group(0)               = ?
[pid 18162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18163 attached
, child_tidptr=0x55555606b5d0) = 18163
[pid 18163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18163] setpgid(0, 0)               = 0
[pid 18163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18163] write(3, "1000", 4)         = 4
[pid 18163] close(3)                    = 0
[pid 18163] memfd_create("syzkaller", 0) = 3
[pid 18163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18163] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18163] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18163] close(4)                    = 0
[pid 18163] close(3)                    = 0
[pid 18163] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18163] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18163] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18163] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18163] open("./bus", O_RDONLY)     = 3
[pid 18163] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18163] exit_group(0)               = ?
[pid 18163] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18163, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18164 attached
, child_tidptr=0x55555606b5d0) = 18164
[pid 18164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18164] setpgid(0, 0)               = 0
[pid 18164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18164] write(3, "1000", 4)         = 4
[pid 18164] close(3)                    = 0
[pid 18164] memfd_create("syzkaller", 0) = 3
[pid 18164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18164] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18164] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18164] close(4)                    = 0
[pid 18164] close(3)                    = 0
[pid 18164] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18164] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18164] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18164] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18164] open("./bus", O_RDONLY)     = 3
[pid 18164] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18164] exit_group(0)               = ?
[pid 18164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18165 attached
, child_tidptr=0x55555606b5d0) = 18165
[pid 18165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18165] setpgid(0, 0)               = 0
[pid 18165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18165] write(3, "1000", 4)         = 4
[pid 18165] close(3)                    = 0
[pid 18165] memfd_create("syzkaller", 0) = 3
[pid 18165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18165] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18165] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18165] close(4)                    = 0
[pid 18165] close(3)                    = 0
[pid 18165] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18165] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18165] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18165] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18165] open("./bus", O_RDONLY)     = 3
[pid 18165] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18165] exit_group(0)               = ?
[pid 18165] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18165, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18166 attached
, child_tidptr=0x55555606b5d0) = 18166
[pid 18166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18166] setpgid(0, 0)               = 0
[pid 18166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18166] write(3, "1000", 4)         = 4
[pid 18166] close(3)                    = 0
[pid 18166] memfd_create("syzkaller", 0) = 3
[pid 18166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18166] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18166] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18166] close(4)                    = 0
[pid 18166] close(3)                    = 0
[pid 18166] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18166] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18166] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18166] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18166] open("./bus", O_RDONLY)     = 3
[pid 18166] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18166] exit_group(0)               = ?
[pid 18166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18167 attached
, child_tidptr=0x55555606b5d0) = 18167
[pid 18167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18167] setpgid(0, 0)               = 0
[pid 18167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18167] write(3, "1000", 4)         = 4
[pid 18167] close(3)                    = 0
[pid 18167] memfd_create("syzkaller", 0) = 3
[pid 18167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18167] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18167] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18167] close(4)                    = 0
[pid 18167] close(3)                    = 0
[pid 18167] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18167] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18167] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18167] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18167] open("./bus", O_RDONLY)     = 3
[pid 18167] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18167] exit_group(0)               = ?
[pid 18167] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18167, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18168 attached
, child_tidptr=0x55555606b5d0) = 18168
[pid 18168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18168] setpgid(0, 0)               = 0
[pid 18168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18168] write(3, "1000", 4)         = 4
[pid 18168] close(3)                    = 0
[pid 18168] memfd_create("syzkaller", 0) = 3
[pid 18168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18168] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18168] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18168] close(4)                    = 0
[pid 18168] close(3)                    = 0
[pid 18168] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18168] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18168] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18168] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18168] open("./bus", O_RDONLY)     = 3
[pid 18168] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18168] exit_group(0)               = ?
[pid 18168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18169 attached
, child_tidptr=0x55555606b5d0) = 18169
[pid 18169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18169] setpgid(0, 0)               = 0
[pid 18169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18169] write(3, "1000", 4)         = 4
[pid 18169] close(3)                    = 0
[pid 18169] memfd_create("syzkaller", 0) = 3
[pid 18169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18169] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18169] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18169] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18169] close(4)                    = 0
[pid 18169] close(3)                    = 0
[pid 18169] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18169] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18169] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18169] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18169] open("./bus", O_RDONLY)     = 3
[pid 18169] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18169] exit_group(0)               = ?
[pid 18169] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18169, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18170 attached
, child_tidptr=0x55555606b5d0) = 18170
[pid 18170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18170] setpgid(0, 0)               = 0
[pid 18170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18170] write(3, "1000", 4)         = 4
[pid 18170] close(3)                    = 0
[pid 18170] memfd_create("syzkaller", 0) = 3
[pid 18170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18170] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18170] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18170] close(4)                    = 0
[pid 18170] close(3)                    = 0
[pid 18170] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18170] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18170] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18170] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18170] open("./bus", O_RDONLY)     = 3
[pid 18170] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18170] exit_group(0)               = ?
[pid 18170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18171 attached
, child_tidptr=0x55555606b5d0) = 18171
[pid 18171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18171] setpgid(0, 0)               = 0
[pid 18171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18171] write(3, "1000", 4)         = 4
[pid 18171] close(3)                    = 0
[pid 18171] memfd_create("syzkaller", 0) = 3
[pid 18171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18171] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18171] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18171] close(4)                    = 0
[pid 18171] close(3)                    = 0
[pid 18171] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18171] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18171] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18171] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18171] open("./bus", O_RDONLY)     = 3
[pid 18171] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18171] exit_group(0)               = ?
[pid 18171] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18171, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18172 attached
, child_tidptr=0x55555606b5d0) = 18172
[pid 18172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18172] setpgid(0, 0)               = 0
[pid 18172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18172] write(3, "1000", 4)         = 4
[pid 18172] close(3)                    = 0
[pid 18172] memfd_create("syzkaller", 0) = 3
[pid 18172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18172] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18172] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18172] close(4)                    = 0
[pid 18172] close(3)                    = 0
[pid 18172] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18172] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18172] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18172] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18172] open("./bus", O_RDONLY)     = 3
[pid 18172] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18172] exit_group(0)               = ?
[pid 18172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18173 attached
 <unfinished ...>
[pid 18173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18173
[pid 18173] setpgid(0, 0)               = 0
[pid 18173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18173] write(3, "1000", 4)         = 4
[pid 18173] close(3)                    = 0
[pid 18173] memfd_create("syzkaller", 0) = 3
[pid 18173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18173] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18173] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18173] close(4)                    = 0
[pid 18173] close(3)                    = 0
[pid 18173] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18173] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18173] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18173] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18173] open("./bus", O_RDONLY)     = 3
[pid 18173] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18173] exit_group(0)               = ?
[pid 18173] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18173, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18174 attached
, child_tidptr=0x55555606b5d0) = 18174
[pid 18174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18174] setpgid(0, 0)               = 0
[pid 18174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18174] write(3, "1000", 4)         = 4
[pid 18174] close(3)                    = 0
[pid 18174] memfd_create("syzkaller", 0) = 3
[pid 18174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18174] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18174] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18174] close(4)                    = 0
[pid 18174] close(3)                    = 0
[pid 18174] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18174] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18174] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18174] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18174] open("./bus", O_RDONLY)     = 3
[pid 18174] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18174] exit_group(0)               = ?
[pid 18174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18175
./strace-static-x86_64: Process 18175 attached
[pid 18175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18175] setpgid(0, 0)               = 0
[pid 18175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18175] write(3, "1000", 4)         = 4
[pid 18175] close(3)                    = 0
[pid 18175] memfd_create("syzkaller", 0) = 3
[pid 18175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18175] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18175] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18175] close(4)                    = 0
[pid 18175] close(3)                    = 0
[pid 18175] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18175] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18175] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18175] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18175] open("./bus", O_RDONLY)     = 3
[pid 18175] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18175] exit_group(0)               = ?
[pid 18175] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18175, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18176 attached
, child_tidptr=0x55555606b5d0) = 18176
[pid 18176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18176] setpgid(0, 0)               = 0
[pid 18176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18176] write(3, "1000", 4)         = 4
[pid 18176] close(3)                    = 0
[pid 18176] memfd_create("syzkaller", 0) = 3
[pid 18176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18176] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18176] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18176] close(4)                    = 0
[pid 18176] close(3)                    = 0
[pid 18176] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18176] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18176] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18176] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18176] open("./bus", O_RDONLY)     = 3
[pid 18176] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18176] exit_group(0)               = ?
[pid 18176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18177
./strace-static-x86_64: Process 18177 attached
[pid 18177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18177] setpgid(0, 0)               = 0
[pid 18177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18177] write(3, "1000", 4)         = 4
[pid 18177] close(3)                    = 0
[pid 18177] memfd_create("syzkaller", 0) = 3
[pid 18177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18177] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18177] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18177] close(4)                    = 0
[pid 18177] close(3)                    = 0
[pid 18177] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18177] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18177] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18177] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18177] open("./bus", O_RDONLY)     = 3
[pid 18177] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18177] exit_group(0)               = ?
[pid 18177] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18177, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18178
./strace-static-x86_64: Process 18178 attached
[pid 18178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18178] setpgid(0, 0)               = 0
[pid 18178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18178] write(3, "1000", 4)         = 4
[pid 18178] close(3)                    = 0
[pid 18178] memfd_create("syzkaller", 0) = 3
[pid 18178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18178] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18178] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18178] close(4)                    = 0
[pid 18178] close(3)                    = 0
[pid 18178] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18178] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18178] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18178] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18178] open("./bus", O_RDONLY)     = 3
[pid 18178] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18178] exit_group(0)               = ?
[pid 18178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18179
./strace-static-x86_64: Process 18179 attached
[pid 18179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18179] setpgid(0, 0)               = 0
[pid 18179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18179] write(3, "1000", 4)         = 4
[pid 18179] close(3)                    = 0
[pid 18179] memfd_create("syzkaller", 0) = 3
[pid 18179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18179] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18179] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18179] close(4)                    = 0
[pid 18179] close(3)                    = 0
[pid 18179] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18179] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18179] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18179] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18179] open("./bus", O_RDONLY)     = 3
[pid 18179] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18179] exit_group(0)               = ?
[pid 18179] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18179, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18180 attached
, child_tidptr=0x55555606b5d0) = 18180
[pid 18180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18180] setpgid(0, 0)               = 0
[pid 18180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18180] write(3, "1000", 4)         = 4
[pid 18180] close(3)                    = 0
[pid 18180] memfd_create("syzkaller", 0) = 3
[pid 18180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18180] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18180] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18180] close(4)                    = 0
[pid 18180] close(3)                    = 0
[pid 18180] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18180] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18180] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18180] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18180] open("./bus", O_RDONLY)     = 3
[pid 18180] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18180] exit_group(0)               = ?
[pid 18180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18180, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18181 attached
, child_tidptr=0x55555606b5d0) = 18181
[pid 18181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18181] setpgid(0, 0)               = 0
[pid 18181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18181] write(3, "1000", 4)         = 4
[pid 18181] close(3)                    = 0
[pid 18181] memfd_create("syzkaller", 0) = 3
[pid 18181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18181] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18181] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18181] close(4)                    = 0
[pid 18181] close(3)                    = 0
[pid 18181] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18181] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18181] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18181] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18181] open("./bus", O_RDONLY)     = 3
[pid 18181] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18181] exit_group(0)               = ?
[pid 18181] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18181, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18182 attached
 <unfinished ...>
[pid 18182] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18182
[pid 18182] <... prctl resumed>)        = 0
[pid 18182] setpgid(0, 0)               = 0
[pid 18182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18182] write(3, "1000", 4)         = 4
[pid 18182] close(3)                    = 0
[pid 18182] memfd_create("syzkaller", 0) = 3
[pid 18182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18182] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18182] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18182] close(4)                    = 0
[pid 18182] close(3)                    = 0
[pid 18182] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18182] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18182] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18182] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18182] open("./bus", O_RDONLY)     = 3
[pid 18182] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18182] exit_group(0)               = ?
[pid 18182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18183 attached
 <unfinished ...>
[pid 18183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18183] setpgid(0, 0)               = 0
[pid 18183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18183
[pid 18183] <... openat resumed>)       = 3
[pid 18183] write(3, "1000", 4)         = 4
[pid 18183] close(3)                    = 0
[pid 18183] memfd_create("syzkaller", 0) = 3
[pid 18183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18183] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18183] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18183] close(4)                    = 0
[pid 18183] close(3)                    = 0
[pid 18183] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18183] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18183] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18183] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18183] open("./bus", O_RDONLY)     = 3
[pid 18183] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18183] exit_group(0)               = ?
[pid 18183] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18183, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18184 attached
, child_tidptr=0x55555606b5d0) = 18184
[pid 18184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18184] setpgid(0, 0)               = 0
[pid 18184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18184] write(3, "1000", 4)         = 4
[pid 18184] close(3)                    = 0
[pid 18184] memfd_create("syzkaller", 0) = 3
[pid 18184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18184] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18184] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18184] close(4)                    = 0
[pid 18184] close(3)                    = 0
[pid 18184] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18184] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18184] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18184] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18184] open("./bus", O_RDONLY)     = 3
[pid 18184] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18184] exit_group(0)               = ?
[pid 18184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18185 attached
 <unfinished ...>
[pid 18185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18185] setpgid(0, 0)               = 0
[pid 18185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18185
[pid 18185] write(3, "1000", 4)         = 4
[pid 18185] close(3)                    = 0
[pid 18185] memfd_create("syzkaller", 0) = 3
[pid 18185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18185] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18185] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18185] close(4)                    = 0
[pid 18185] close(3)                    = 0
[pid 18185] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18185] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18185] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18185] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18185] open("./bus", O_RDONLY)     = 3
[pid 18185] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18185] exit_group(0)               = ?
[pid 18185] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18185, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18186 attached
, child_tidptr=0x55555606b5d0) = 18186
[pid 18186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18186] setpgid(0, 0)               = 0
[pid 18186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18186] write(3, "1000", 4)         = 4
[pid 18186] close(3)                    = 0
[pid 18186] memfd_create("syzkaller", 0) = 3
[pid 18186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18186] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18186] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18186] close(4)                    = 0
[pid 18186] close(3)                    = 0
[pid 18186] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18186] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18186] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18186] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18186] open("./bus", O_RDONLY)     = 3
[pid 18186] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18186] exit_group(0)               = ?
[pid 18186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18187
./strace-static-x86_64: Process 18187 attached
[pid 18187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18187] setpgid(0, 0)               = 0
[pid 18187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18187] write(3, "1000", 4)         = 4
[pid 18187] close(3)                    = 0
[pid 18187] memfd_create("syzkaller", 0) = 3
[pid 18187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18187] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18187] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18187] close(4)                    = 0
[pid 18187] close(3)                    = 0
[pid 18187] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18187] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18187] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18187] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18187] open("./bus", O_RDONLY)     = 3
[pid 18187] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18187] exit_group(0)               = ?
[pid 18187] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18187, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18188
./strace-static-x86_64: Process 18188 attached
[pid 18188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18188] setpgid(0, 0)               = 0
[pid 18188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18188] write(3, "1000", 4)         = 4
[pid 18188] close(3)                    = 0
[pid 18188] memfd_create("syzkaller", 0) = 3
[pid 18188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18188] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18188] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18188] close(4)                    = 0
[pid 18188] close(3)                    = 0
[pid 18188] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18188] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18188] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18188] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18188] open("./bus", O_RDONLY)     = 3
[pid 18188] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18188] exit_group(0)               = ?
[pid 18188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18189 attached
 <unfinished ...>
[pid 18189] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18189
[pid 18189] <... prctl resumed>)        = 0
[pid 18189] setpgid(0, 0)               = 0
[pid 18189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18189] write(3, "1000", 4)         = 4
[pid 18189] close(3)                    = 0
[pid 18189] memfd_create("syzkaller", 0) = 3
[pid 18189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18189] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18189] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18189] close(4)                    = 0
[pid 18189] close(3)                    = 0
[pid 18189] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18189] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18189] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18189] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18189] open("./bus", O_RDONLY)     = 3
[pid 18189] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18189] exit_group(0)               = ?
[pid 18189] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18189, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18190
./strace-static-x86_64: Process 18190 attached
[pid 18190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18190] setpgid(0, 0)               = 0
[pid 18190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18190] write(3, "1000", 4)         = 4
[pid 18190] close(3)                    = 0
[pid 18190] memfd_create("syzkaller", 0) = 3
[pid 18190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18190] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18190] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18190] close(4)                    = 0
[pid 18190] close(3)                    = 0
[pid 18190] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18190] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18190] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18190] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18190] open("./bus", O_RDONLY)     = 3
[pid 18190] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18190] exit_group(0)               = ?
[pid 18190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18191 attached
, child_tidptr=0x55555606b5d0) = 18191
[pid 18191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18191] setpgid(0, 0)               = 0
[pid 18191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18191] write(3, "1000", 4)         = 4
[pid 18191] close(3)                    = 0
[pid 18191] memfd_create("syzkaller", 0) = 3
[pid 18191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18191] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18191] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18191] close(4)                    = 0
[pid 18191] close(3)                    = 0
[pid 18191] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18191] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18191] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18191] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18191] open("./bus", O_RDONLY)     = 3
[pid 18191] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18191] exit_group(0)               = ?
[pid 18191] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18191, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18192 attached
 <unfinished ...>
[pid 18192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18192
[pid 18192] setpgid(0, 0)               = 0
[pid 18192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18192] write(3, "1000", 4)         = 4
[pid 18192] close(3)                    = 0
[pid 18192] memfd_create("syzkaller", 0) = 3
[pid 18192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18192] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18192] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18192] close(4)                    = 0
[pid 18192] close(3)                    = 0
[pid 18192] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18192] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18192] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18192] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18192] open("./bus", O_RDONLY)     = 3
[pid 18192] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18192] exit_group(0)               = ?
[pid 18192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18193 attached
, child_tidptr=0x55555606b5d0) = 18193
[pid 18193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18193] setpgid(0, 0)               = 0
[pid 18193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18193] write(3, "1000", 4)         = 4
[pid 18193] close(3)                    = 0
[pid 18193] memfd_create("syzkaller", 0) = 3
[pid 18193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18193] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18193] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18193] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18193] close(4)                    = 0
[pid 18193] close(3)                    = 0
[pid 18193] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18193] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18193] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18193] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18193] open("./bus", O_RDONLY)     = 3
[pid 18193] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18193] exit_group(0)               = ?
[pid 18193] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18193, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18194
./strace-static-x86_64: Process 18194 attached
[pid 18194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18194] setpgid(0, 0)               = 0
[pid 18194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18194] write(3, "1000", 4)         = 4
[pid 18194] close(3)                    = 0
[pid 18194] memfd_create("syzkaller", 0) = 3
[pid 18194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18194] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18194] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18194] close(4)                    = 0
[pid 18194] close(3)                    = 0
[pid 18194] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18194] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18194] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18194] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18194] open("./bus", O_RDONLY)     = 3
[pid 18194] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18194] exit_group(0)               = ?
[pid 18194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18195 attached
, child_tidptr=0x55555606b5d0) = 18195
[pid 18195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18195] setpgid(0, 0)               = 0
[pid 18195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18195] write(3, "1000", 4)         = 4
[pid 18195] close(3)                    = 0
[pid 18195] memfd_create("syzkaller", 0) = 3
[pid 18195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18195] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18195] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18195] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18195] close(4)                    = 0
[pid 18195] close(3)                    = 0
[pid 18195] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18195] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18195] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18195] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18195] open("./bus", O_RDONLY)     = 3
[pid 18195] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18195] exit_group(0)               = ?
[pid 18195] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18195, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18196 attached
 <unfinished ...>
[pid 18196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18196] setpgid(0, 0)               = 0
[pid 18196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18196
[pid 18196] <... openat resumed>)       = 3
[pid 18196] write(3, "1000", 4)         = 4
[pid 18196] close(3)                    = 0
[pid 18196] memfd_create("syzkaller", 0) = 3
[pid 18196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18196] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18196] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18196] close(4)                    = 0
[pid 18196] close(3)                    = 0
[pid 18196] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18196] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18196] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18196] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18196] open("./bus", O_RDONLY)     = 3
[pid 18196] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18196] exit_group(0)               = ?
[pid 18196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18197 attached
, child_tidptr=0x55555606b5d0) = 18197
[pid 18197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18197] setpgid(0, 0)               = 0
[pid 18197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18197] write(3, "1000", 4)         = 4
[pid 18197] close(3)                    = 0
[pid 18197] memfd_create("syzkaller", 0) = 3
[pid 18197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18197] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18197] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18197] close(4)                    = 0
[pid 18197] close(3)                    = 0
[pid 18197] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18197] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18197] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18197] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18197] open("./bus", O_RDONLY)     = 3
[pid 18197] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18197] exit_group(0)               = ?
[pid 18197] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18197, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18198 attached
, child_tidptr=0x55555606b5d0) = 18198
[pid 18198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18198] setpgid(0, 0)               = 0
[pid 18198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18198] write(3, "1000", 4)         = 4
[pid 18198] close(3)                    = 0
[pid 18198] memfd_create("syzkaller", 0) = 3
[pid 18198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18198] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18198] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18198] close(4)                    = 0
[pid 18198] close(3)                    = 0
[pid 18198] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18198] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18198] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18198] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18198] open("./bus", O_RDONLY)     = 3
[pid 18198] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18198] exit_group(0)               = ?
[pid 18198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18199 attached
, child_tidptr=0x55555606b5d0) = 18199
[pid 18199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18199] setpgid(0, 0)               = 0
[pid 18199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18199] write(3, "1000", 4)         = 4
[pid 18199] close(3)                    = 0
[pid 18199] memfd_create("syzkaller", 0) = 3
[pid 18199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18199] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18199] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18199] close(4)                    = 0
[pid 18199] close(3)                    = 0
[pid 18199] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18199] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18199] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18199] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18199] open("./bus", O_RDONLY)     = 3
[pid 18199] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18199] exit_group(0)               = ?
[pid 18199] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18199, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18200 attached
, child_tidptr=0x55555606b5d0) = 18200
[pid 18200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18200] setpgid(0, 0)               = 0
[pid 18200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18200] write(3, "1000", 4)         = 4
[pid 18200] close(3)                    = 0
[pid 18200] memfd_create("syzkaller", 0) = 3
[pid 18200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18200] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18200] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18200] close(4)                    = 0
[pid 18200] close(3)                    = 0
[pid 18200] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18200] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18200] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18200] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18200] open("./bus", O_RDONLY)     = 3
[pid 18200] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18200] exit_group(0)               = ?
[pid 18200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18201 attached
, child_tidptr=0x55555606b5d0) = 18201
[pid 18201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18201] setpgid(0, 0)               = 0
[pid 18201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18201] write(3, "1000", 4)         = 4
[pid 18201] close(3)                    = 0
[pid 18201] memfd_create("syzkaller", 0) = 3
[pid 18201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18201] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18201] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18201] close(4)                    = 0
[pid 18201] close(3)                    = 0
[pid 18201] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18201] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18201] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18201] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18201] open("./bus", O_RDONLY)     = 3
[pid 18201] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18201] exit_group(0)               = ?
[pid 18201] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18201, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18202 attached
, child_tidptr=0x55555606b5d0) = 18202
[pid 18202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18202] setpgid(0, 0)               = 0
[pid 18202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18202] write(3, "1000", 4)         = 4
[pid 18202] close(3)                    = 0
[pid 18202] memfd_create("syzkaller", 0) = 3
[pid 18202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18202] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18202] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18202] close(4)                    = 0
[pid 18202] close(3)                    = 0
[pid 18202] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18202] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18202] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18202] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18202] open("./bus", O_RDONLY)     = 3
[pid 18202] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18202] exit_group(0)               = ?
[pid 18202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18203 attached
, child_tidptr=0x55555606b5d0) = 18203
[pid 18203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18203] setpgid(0, 0)               = 0
[pid 18203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18203] write(3, "1000", 4)         = 4
[pid 18203] close(3)                    = 0
[pid 18203] memfd_create("syzkaller", 0) = 3
[pid 18203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18203] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18203] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18203] close(4)                    = 0
[pid 18203] close(3)                    = 0
[pid 18203] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18203] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18203] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18203] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18203] open("./bus", O_RDONLY)     = 3
[pid 18203] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18203] exit_group(0)               = ?
[pid 18203] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18203, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18204 attached
, child_tidptr=0x55555606b5d0) = 18204
[pid 18204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18204] setpgid(0, 0)               = 0
[pid 18204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18204] write(3, "1000", 4)         = 4
[pid 18204] close(3)                    = 0
[pid 18204] memfd_create("syzkaller", 0) = 3
[pid 18204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18204] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18204] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18204] close(4)                    = 0
[pid 18204] close(3)                    = 0
[pid 18204] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18204] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18204] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18204] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18204] open("./bus", O_RDONLY)     = 3
[pid 18204] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18204] exit_group(0)               = ?
[pid 18204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18205 attached
, child_tidptr=0x55555606b5d0) = 18205
[pid 18205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18205] setpgid(0, 0)               = 0
[pid 18205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18205] write(3, "1000", 4)         = 4
[pid 18205] close(3)                    = 0
[pid 18205] memfd_create("syzkaller", 0) = 3
[pid 18205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18205] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18205] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18205] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18205] close(4)                    = 0
[pid 18205] close(3)                    = 0
[pid 18205] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18205] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18205] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18205] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18205] open("./bus", O_RDONLY)     = 3
[pid 18205] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18205] exit_group(0)               = ?
[pid 18205] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18205, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18206
./strace-static-x86_64: Process 18206 attached
[pid 18206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18206] setpgid(0, 0)               = 0
[pid 18206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18206] write(3, "1000", 4)         = 4
[pid 18206] close(3)                    = 0
[pid 18206] memfd_create("syzkaller", 0) = 3
[pid 18206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18206] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18206] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18206] close(4)                    = 0
[pid 18206] close(3)                    = 0
[pid 18206] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18206] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18206] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18206] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18206] open("./bus", O_RDONLY)     = 3
[pid 18206] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18206] exit_group(0)               = ?
[pid 18206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18207 attached
, child_tidptr=0x55555606b5d0) = 18207
[pid 18207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18207] setpgid(0, 0)               = 0
[pid 18207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18207] write(3, "1000", 4)         = 4
[pid 18207] close(3)                    = 0
[pid 18207] memfd_create("syzkaller", 0) = 3
[pid 18207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18207] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18207] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18207] close(4)                    = 0
[pid 18207] close(3)                    = 0
[pid 18207] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18207] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18207] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18207] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18207] open("./bus", O_RDONLY)     = 3
[pid 18207] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18207] exit_group(0)               = ?
[pid 18207] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18207, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18208 attached
, child_tidptr=0x55555606b5d0) = 18208
[pid 18208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18208] setpgid(0, 0)               = 0
[pid 18208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18208] write(3, "1000", 4)         = 4
[pid 18208] close(3)                    = 0
[pid 18208] memfd_create("syzkaller", 0) = 3
[pid 18208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18208] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18208] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18208] close(4)                    = 0
[pid 18208] close(3)                    = 0
[pid 18208] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18208] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18208] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18208] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18208] open("./bus", O_RDONLY)     = 3
[pid 18208] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18208] exit_group(0)               = ?
[pid 18208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18209
./strace-static-x86_64: Process 18209 attached
[pid 18209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18209] setpgid(0, 0)               = 0
[pid 18209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18209] write(3, "1000", 4)         = 4
[pid 18209] close(3)                    = 0
[pid 18209] memfd_create("syzkaller", 0) = 3
[pid 18209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18209] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18209] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18209] close(4)                    = 0
[pid 18209] close(3)                    = 0
[pid 18209] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18209] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18209] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18209] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18209] open("./bus", O_RDONLY)     = 3
[pid 18209] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18209] exit_group(0)               = ?
[pid 18209] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18209, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18210
./strace-static-x86_64: Process 18210 attached
[pid 18210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18210] setpgid(0, 0)               = 0
[pid 18210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18210] write(3, "1000", 4)         = 4
[pid 18210] close(3)                    = 0
[pid 18210] memfd_create("syzkaller", 0) = 3
[pid 18210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18210] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18210] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18210] close(4)                    = 0
[pid 18210] close(3)                    = 0
[pid 18210] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18210] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18210] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18210] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18210] open("./bus", O_RDONLY)     = 3
[pid 18210] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18210] exit_group(0)               = ?
[pid 18210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18211 attached
, child_tidptr=0x55555606b5d0) = 18211
[pid 18211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18211] setpgid(0, 0)               = 0
[pid 18211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18211] write(3, "1000", 4)         = 4
[pid 18211] close(3)                    = 0
[pid 18211] memfd_create("syzkaller", 0) = 3
[pid 18211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18211] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18211] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18211] close(4)                    = 0
[pid 18211] close(3)                    = 0
[pid 18211] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18211] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18211] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18211] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18211] open("./bus", O_RDONLY)     = 3
[pid 18211] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18211] exit_group(0)               = ?
[pid 18211] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18211, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18212 attached
, child_tidptr=0x55555606b5d0) = 18212
[pid 18212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18212] setpgid(0, 0)               = 0
[pid 18212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18212] write(3, "1000", 4)         = 4
[pid 18212] close(3)                    = 0
[pid 18212] memfd_create("syzkaller", 0) = 3
[pid 18212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18212] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18212] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18212] close(4)                    = 0
[pid 18212] close(3)                    = 0
[pid 18212] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18212] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18212] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18212] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18212] open("./bus", O_RDONLY)     = 3
[pid 18212] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18212] exit_group(0)               = ?
[pid 18212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18213 attached
, child_tidptr=0x55555606b5d0) = 18213
[pid 18213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18213] setpgid(0, 0)               = 0
[pid 18213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18213] write(3, "1000", 4)         = 4
[pid 18213] close(3)                    = 0
[pid 18213] memfd_create("syzkaller", 0) = 3
[pid 18213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18213] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18213] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18213] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18213] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18213] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18213] close(4)                    = 0
[pid 18213] close(3)                    = 0
[pid 18213] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18213] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18213] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18213] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18213] open("./bus", O_RDONLY)     = 3
[pid 18213] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18213] exit_group(0)               = ?
[pid 18213] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18213, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18214 attached
, child_tidptr=0x55555606b5d0) = 18214
[pid 18214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18214] setpgid(0, 0)               = 0
[pid 18214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18214] write(3, "1000", 4)         = 4
[pid 18214] close(3)                    = 0
[pid 18214] memfd_create("syzkaller", 0) = 3
[pid 18214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18214] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18214] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18214] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18214] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18214] close(4)                    = 0
[pid 18214] close(3)                    = 0
[pid 18214] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18214] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18214] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18214] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18214] open("./bus", O_RDONLY)     = 3
[pid 18214] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18214] exit_group(0)               = ?
[pid 18214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18215 attached
, child_tidptr=0x55555606b5d0) = 18215
[pid 18215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18215] setpgid(0, 0)               = 0
[pid 18215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18215] write(3, "1000", 4)         = 4
[pid 18215] close(3)                    = 0
[pid 18215] memfd_create("syzkaller", 0) = 3
[pid 18215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18215] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18215] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18215] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18215] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18215] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18215] close(4)                    = 0
[pid 18215] close(3)                    = 0
[pid 18215] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18215] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18215] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18215] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18215] open("./bus", O_RDONLY)     = 3
[pid 18215] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18215] exit_group(0)               = ?
[pid 18215] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18215, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18216 attached
, child_tidptr=0x55555606b5d0) = 18216
[pid 18216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18216] setpgid(0, 0)               = 0
[pid 18216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18216] write(3, "1000", 4)         = 4
[pid 18216] close(3)                    = 0
[pid 18216] memfd_create("syzkaller", 0) = 3
[pid 18216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18216] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18216] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18216] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18216] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18216] close(4)                    = 0
[pid 18216] close(3)                    = 0
[pid 18216] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18216] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18216] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18216] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18216] open("./bus", O_RDONLY)     = 3
[pid 18216] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18216] exit_group(0)               = ?
[pid 18216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18217 attached
, child_tidptr=0x55555606b5d0) = 18217
[pid 18217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18217] setpgid(0, 0)               = 0
[pid 18217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18217] write(3, "1000", 4)         = 4
[pid 18217] close(3)                    = 0
[pid 18217] memfd_create("syzkaller", 0) = 3
[pid 18217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18217] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18217] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18217] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18217] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18217] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18217] close(4)                    = 0
[pid 18217] close(3)                    = 0
[pid 18217] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18217] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18217] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18217] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18217] open("./bus", O_RDONLY)     = 3
[pid 18217] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18217] exit_group(0)               = ?
[pid 18217] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18217, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18218
./strace-static-x86_64: Process 18218 attached
[pid 18218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18218] setpgid(0, 0)               = 0
[pid 18218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18218] write(3, "1000", 4)         = 4
[pid 18218] close(3)                    = 0
[pid 18218] memfd_create("syzkaller", 0) = 3
[pid 18218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18218] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18218] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18218] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18218] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18218] close(4)                    = 0
[pid 18218] close(3)                    = 0
[pid 18218] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18218] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18218] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18218] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18218] open("./bus", O_RDONLY)     = 3
[pid 18218] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18218] exit_group(0)               = ?
[pid 18218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18219 attached
, child_tidptr=0x55555606b5d0) = 18219
[pid 18219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18219] setpgid(0, 0)               = 0
[pid 18219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18219] write(3, "1000", 4)         = 4
[pid 18219] close(3)                    = 0
[pid 18219] memfd_create("syzkaller", 0) = 3
[pid 18219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18219] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18219] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18219] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18219] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18219] close(4)                    = 0
[pid 18219] close(3)                    = 0
[pid 18219] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18219] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18219] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18219] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18219] open("./bus", O_RDONLY)     = 3
[pid 18219] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18219] exit_group(0)               = ?
[pid 18219] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18219, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18220 attached
, child_tidptr=0x55555606b5d0) = 18220
[pid 18220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18220] setpgid(0, 0)               = 0
[pid 18220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18220] write(3, "1000", 4)         = 4
[pid 18220] close(3)                    = 0
[pid 18220] memfd_create("syzkaller", 0) = 3
[pid 18220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18220] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18220] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18220] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18220] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18220] close(4)                    = 0
[pid 18220] close(3)                    = 0
[pid 18220] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18220] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18220] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18220] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18220] open("./bus", O_RDONLY)     = 3
[pid 18220] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18220] exit_group(0)               = ?
[pid 18220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18221
./strace-static-x86_64: Process 18221 attached
[pid 18221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18221] setpgid(0, 0)               = 0
[pid 18221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18221] write(3, "1000", 4)         = 4
[pid 18221] close(3)                    = 0
[pid 18221] memfd_create("syzkaller", 0) = 3
[pid 18221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18221] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18221] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18221] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18221] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18221] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18221] close(4)                    = 0
[pid 18221] close(3)                    = 0
[pid 18221] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18221] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18221] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18221] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18221] open("./bus", O_RDONLY)     = 3
[pid 18221] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18221] exit_group(0)               = ?
[pid 18221] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18221, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18222 attached
, child_tidptr=0x55555606b5d0) = 18222
[pid 18222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18222] setpgid(0, 0)               = 0
[pid 18222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18222] write(3, "1000", 4)         = 4
[pid 18222] close(3)                    = 0
[pid 18222] memfd_create("syzkaller", 0) = 3
[pid 18222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18222] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18222] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18222] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18222] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18222] close(4)                    = 0
[pid 18222] close(3)                    = 0
[pid 18222] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18222] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18222] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18222] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18222] open("./bus", O_RDONLY)     = 3
[pid 18222] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18222] exit_group(0)               = ?
[pid 18222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18223 attached
, child_tidptr=0x55555606b5d0) = 18223
[pid 18223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18223] setpgid(0, 0)               = 0
[pid 18223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18223] write(3, "1000", 4)         = 4
[pid 18223] close(3)                    = 0
[pid 18223] memfd_create("syzkaller", 0) = 3
[pid 18223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18223] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18223] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18223] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18223] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18223] close(4)                    = 0
[pid 18223] close(3)                    = 0
[pid 18223] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18223] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18223] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18223] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18223] open("./bus", O_RDONLY)     = 3
[pid 18223] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18223] exit_group(0)               = ?
[pid 18223] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18223, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18224 attached
, child_tidptr=0x55555606b5d0) = 18224
[pid 18224] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18224] setpgid(0, 0)               = 0
[pid 18224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18224] write(3, "1000", 4)         = 4
[pid 18224] close(3)                    = 0
[pid 18224] memfd_create("syzkaller", 0) = 3
[pid 18224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18224] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18224] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18224] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18224] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18224] close(4)                    = 0
[pid 18224] close(3)                    = 0
[pid 18224] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18224] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18224] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18224] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18224] open("./bus", O_RDONLY)     = 3
[pid 18224] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18224] exit_group(0)               = ?
[pid 18224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18225 attached
, child_tidptr=0x55555606b5d0) = 18225
[pid 18225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18225] setpgid(0, 0)               = 0
[pid 18225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18225] write(3, "1000", 4)         = 4
[pid 18225] close(3)                    = 0
[pid 18225] memfd_create("syzkaller", 0) = 3
[pid 18225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18225] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18225] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18225] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18225] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18225] close(4)                    = 0
[pid 18225] close(3)                    = 0
[pid 18225] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18225] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18225] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18225] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18225] open("./bus", O_RDONLY)     = 3
[pid 18225] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18225] exit_group(0)               = ?
[pid 18225] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18225, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18226 attached
, child_tidptr=0x55555606b5d0) = 18226
[pid 18226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18226] setpgid(0, 0)               = 0
[pid 18226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18226] write(3, "1000", 4)         = 4
[pid 18226] close(3)                    = 0
[pid 18226] memfd_create("syzkaller", 0) = 3
[pid 18226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18226] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18226] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18226] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18226] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18226] close(4)                    = 0
[pid 18226] close(3)                    = 0
[pid 18226] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18226] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18226] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18226] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18226] open("./bus", O_RDONLY)     = 3
[pid 18226] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18226] exit_group(0)               = ?
[pid 18226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18227
./strace-static-x86_64: Process 18227 attached
[pid 18227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18227] setpgid(0, 0)               = 0
[pid 18227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18227] write(3, "1000", 4)         = 4
[pid 18227] close(3)                    = 0
[pid 18227] memfd_create("syzkaller", 0) = 3
[pid 18227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18227] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18227] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18227] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18227] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18227] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18227] close(4)                    = 0
[pid 18227] close(3)                    = 0
[pid 18227] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18227] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18227] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18227] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18227] open("./bus", O_RDONLY)     = 3
[pid 18227] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18227] exit_group(0)               = ?
[pid 18227] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18227, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18228 attached
, child_tidptr=0x55555606b5d0) = 18228
[pid 18228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18228] setpgid(0, 0)               = 0
[pid 18228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18228] write(3, "1000", 4)         = 4
[pid 18228] close(3)                    = 0
[pid 18228] memfd_create("syzkaller", 0) = 3
[pid 18228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18228] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18228] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18228] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18228] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18228] close(4)                    = 0
[pid 18228] close(3)                    = 0
[pid 18228] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18228] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18228] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18228] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18228] open("./bus", O_RDONLY)     = 3
[pid 18228] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18228] exit_group(0)               = ?
[pid 18228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18228, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18229 attached
, child_tidptr=0x55555606b5d0) = 18229
[pid 18229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18229] setpgid(0, 0)               = 0
[pid 18229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18229] write(3, "1000", 4)         = 4
[pid 18229] close(3)                    = 0
[pid 18229] memfd_create("syzkaller", 0) = 3
[pid 18229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18229] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18229] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18229] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18229] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18229] close(4)                    = 0
[pid 18229] close(3)                    = 0
[pid 18229] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18229] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18229] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18229] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18229] open("./bus", O_RDONLY)     = 3
[pid 18229] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18229] exit_group(0)               = ?
[pid 18229] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18229, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18230 attached
, child_tidptr=0x55555606b5d0) = 18230
[pid 18230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18230] setpgid(0, 0)               = 0
[pid 18230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18230] write(3, "1000", 4)         = 4
[pid 18230] close(3)                    = 0
[pid 18230] memfd_create("syzkaller", 0) = 3
[pid 18230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18230] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18230] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18230] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18230] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18230] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18230] close(4)                    = 0
[pid 18230] close(3)                    = 0
[pid 18230] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18230] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18230] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18230] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18230] open("./bus", O_RDONLY)     = 3
[pid 18230] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18230] exit_group(0)               = ?
[pid 18230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18231 attached
, child_tidptr=0x55555606b5d0) = 18231
[pid 18231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18231] setpgid(0, 0)               = 0
[pid 18231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18231] write(3, "1000", 4)         = 4
[pid 18231] close(3)                    = 0
[pid 18231] memfd_create("syzkaller", 0) = 3
[pid 18231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18231] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18231] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18231] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18231] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18231] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18231] close(4)                    = 0
[pid 18231] close(3)                    = 0
[pid 18231] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18231] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18231] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18231] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18231] open("./bus", O_RDONLY)     = 3
[pid 18231] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18231] exit_group(0)               = ?
[pid 18231] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18231, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18232
./strace-static-x86_64: Process 18232 attached
[pid 18232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18232] setpgid(0, 0)               = 0
[pid 18232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18232] write(3, "1000", 4)         = 4
[pid 18232] close(3)                    = 0
[pid 18232] memfd_create("syzkaller", 0) = 3
[pid 18232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18232] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18232] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18232] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18232] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18232] close(4)                    = 0
[pid 18232] close(3)                    = 0
[pid 18232] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18232] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18232] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18232] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18232] open("./bus", O_RDONLY)     = 3
[pid 18232] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18232] exit_group(0)               = ?
[pid 18232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18233
./strace-static-x86_64: Process 18233 attached
[pid 18233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18233] setpgid(0, 0)               = 0
[pid 18233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18233] write(3, "1000", 4)         = 4
[pid 18233] close(3)                    = 0
[pid 18233] memfd_create("syzkaller", 0) = 3
[pid 18233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18233] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18233] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18233] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18233] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18233] close(4)                    = 0
[pid 18233] close(3)                    = 0
[pid 18233] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18233] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18233] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18233] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18233] open("./bus", O_RDONLY)     = 3
[pid 18233] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18233] exit_group(0)               = ?
[pid 18233] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18233, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18234 attached
 <unfinished ...>
[pid 18234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18234] setpgid(0, 0)               = 0
[pid 18234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18234
[pid 18234] <... openat resumed>)       = 3
[pid 18234] write(3, "1000", 4)         = 4
[pid 18234] close(3)                    = 0
[pid 18234] memfd_create("syzkaller", 0) = 3
[pid 18234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18234] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18234] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18234] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18234] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18234] close(4)                    = 0
[pid 18234] close(3)                    = 0
[pid 18234] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18234] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18234] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18234] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18234] open("./bus", O_RDONLY)     = 3
[pid 18234] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18234] exit_group(0)               = ?
[pid 18234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18235
./strace-static-x86_64: Process 18235 attached
[pid 18235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18235] setpgid(0, 0)               = 0
[pid 18235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18235] write(3, "1000", 4)         = 4
[pid 18235] close(3)                    = 0
[pid 18235] memfd_create("syzkaller", 0) = 3
[pid 18235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18235] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18235] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18235] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18235] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18235] close(4)                    = 0
[pid 18235] close(3)                    = 0
[pid 18235] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18235] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18235] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18235] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18235] open("./bus", O_RDONLY)     = 3
[pid 18235] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18235] exit_group(0)               = ?
[pid 18235] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18235, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18236 attached
, child_tidptr=0x55555606b5d0) = 18236
[pid 18236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18236] setpgid(0, 0)               = 0
[pid 18236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18236] write(3, "1000", 4)         = 4
[pid 18236] close(3)                    = 0
[pid 18236] memfd_create("syzkaller", 0) = 3
[pid 18236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18236] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18236] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18236] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18236] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18236] close(4)                    = 0
[pid 18236] close(3)                    = 0
[pid 18236] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18236] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18236] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18236] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18236] open("./bus", O_RDONLY)     = 3
[pid 18236] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18236] exit_group(0)               = ?
[pid 18236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18237 attached
 <unfinished ...>
[pid 18237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18237] setpgid(0, 0)               = 0
[pid 18237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18237
[pid 18237] <... openat resumed>)       = 3
[pid 18237] write(3, "1000", 4)         = 4
[pid 18237] close(3)                    = 0
[pid 18237] memfd_create("syzkaller", 0) = 3
[pid 18237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18237] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18237] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18237] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18237] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18237] close(4)                    = 0
[pid 18237] close(3)                    = 0
[pid 18237] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18237] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18237] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18237] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18237] open("./bus", O_RDONLY)     = 3
[pid 18237] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18237] exit_group(0)               = ?
[pid 18237] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18237, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18238
./strace-static-x86_64: Process 18238 attached
[pid 18238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18238] setpgid(0, 0)               = 0
[pid 18238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18238] write(3, "1000", 4)         = 4
[pid 18238] close(3)                    = 0
[pid 18238] memfd_create("syzkaller", 0) = 3
[pid 18238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18238] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18238] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18238] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18238] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18238] close(4)                    = 0
[pid 18238] close(3)                    = 0
[pid 18238] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18238] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18238] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18238] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18238] open("./bus", O_RDONLY)     = 3
[pid 18238] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18238] exit_group(0)               = ?
[pid 18238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18238, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18239
./strace-static-x86_64: Process 18239 attached
[pid 18239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18239] setpgid(0, 0)               = 0
[pid 18239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18239] write(3, "1000", 4)         = 4
[pid 18239] close(3)                    = 0
[pid 18239] memfd_create("syzkaller", 0) = 3
[pid 18239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18239] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18239] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18239] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18239] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18239] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18239] close(4)                    = 0
[pid 18239] close(3)                    = 0
[pid 18239] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18239] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18239] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18239] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18239] open("./bus", O_RDONLY)     = 3
[pid 18239] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18239] exit_group(0)               = ?
[pid 18239] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18239, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18240 attached
, child_tidptr=0x55555606b5d0) = 18240
[pid 18240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18240] setpgid(0, 0)               = 0
[pid 18240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18240] write(3, "1000", 4)         = 4
[pid 18240] close(3)                    = 0
[pid 18240] memfd_create("syzkaller", 0) = 3
[pid 18240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18240] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18240] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18240] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18240] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18240] close(4)                    = 0
[pid 18240] close(3)                    = 0
[pid 18240] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18240] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18240] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18240] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18240] open("./bus", O_RDONLY)     = 3
[pid 18240] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18240] exit_group(0)               = ?
[pid 18240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18240, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18241 attached
, child_tidptr=0x55555606b5d0) = 18241
[pid 18241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18241] setpgid(0, 0)               = 0
[pid 18241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18241] write(3, "1000", 4)         = 4
[pid 18241] close(3)                    = 0
[pid 18241] memfd_create("syzkaller", 0) = 3
[pid 18241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18241] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18241] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18241] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18241] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18241] close(4)                    = 0
[pid 18241] close(3)                    = 0
[pid 18241] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18241] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18241] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18241] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18241] open("./bus", O_RDONLY)     = 3
[pid 18241] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18241] exit_group(0)               = ?
[pid 18241] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18241, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18242 attached
, child_tidptr=0x55555606b5d0) = 18242
[pid 18242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18242] setpgid(0, 0)               = 0
[pid 18242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18242] write(3, "1000", 4)         = 4
[pid 18242] close(3)                    = 0
[pid 18242] memfd_create("syzkaller", 0) = 3
[pid 18242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18242] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18242] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18242] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18242] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18242] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18242] close(4)                    = 0
[pid 18242] close(3)                    = 0
[pid 18242] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18242] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18242] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18242] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18242] open("./bus", O_RDONLY)     = 3
[pid 18242] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18242] exit_group(0)               = ?
[pid 18242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18243 attached
, child_tidptr=0x55555606b5d0) = 18243
[pid 18243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18243] setpgid(0, 0)               = 0
[pid 18243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18243] write(3, "1000", 4)         = 4
[pid 18243] close(3)                    = 0
[pid 18243] memfd_create("syzkaller", 0) = 3
[pid 18243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18243] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18243] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18243] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18243] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18243] close(4)                    = 0
[pid 18243] close(3)                    = 0
[pid 18243] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18243] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18243] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18243] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18243] open("./bus", O_RDONLY)     = 3
[pid 18243] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18243] exit_group(0)               = ?
[pid 18243] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18243, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18244
./strace-static-x86_64: Process 18244 attached
[pid 18244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18244] setpgid(0, 0)               = 0
[pid 18244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18244] write(3, "1000", 4)         = 4
[pid 18244] close(3)                    = 0
[pid 18244] memfd_create("syzkaller", 0) = 3
[pid 18244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18244] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18244] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18244] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18244] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18244] close(4)                    = 0
[pid 18244] close(3)                    = 0
[pid 18244] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18244] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18244] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18244] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18244] open("./bus", O_RDONLY)     = 3
[pid 18244] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18244] exit_group(0)               = ?
[pid 18244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18245 attached
, child_tidptr=0x55555606b5d0) = 18245
[pid 18245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18245] setpgid(0, 0)               = 0
[pid 18245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18245] write(3, "1000", 4)         = 4
[pid 18245] close(3)                    = 0
[pid 18245] memfd_create("syzkaller", 0) = 3
[pid 18245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18245] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18245] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18245] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18245] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18245] close(4)                    = 0
[pid 18245] close(3)                    = 0
[pid 18245] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18245] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18245] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18245] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18245] open("./bus", O_RDONLY)     = 3
[pid 18245] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18245] exit_group(0)               = ?
[pid 18245] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18245, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18246 attached
, child_tidptr=0x55555606b5d0) = 18246
[pid 18246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18246] setpgid(0, 0)               = 0
[pid 18246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18246] write(3, "1000", 4)         = 4
[pid 18246] close(3)                    = 0
[pid 18246] memfd_create("syzkaller", 0) = 3
[pid 18246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18246] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18246] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18246] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18246] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18246] close(4)                    = 0
[pid 18246] close(3)                    = 0
[pid 18246] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18246] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18246] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18246] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18246] open("./bus", O_RDONLY)     = 3
[pid 18246] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18246] exit_group(0)               = ?
[pid 18246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18247 attached
, child_tidptr=0x55555606b5d0) = 18247
[pid 18247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18247] setpgid(0, 0)               = 0
[pid 18247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18247] write(3, "1000", 4)         = 4
[pid 18247] close(3)                    = 0
[pid 18247] memfd_create("syzkaller", 0) = 3
[pid 18247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18247] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18247] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18247] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18247] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18247] close(4)                    = 0
[pid 18247] close(3)                    = 0
[pid 18247] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18247] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18247] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18247] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18247] open("./bus", O_RDONLY)     = 3
[pid 18247] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18247] exit_group(0)               = ?
[pid 18247] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18247, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18248 attached
, child_tidptr=0x55555606b5d0) = 18248
[pid 18248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18248] setpgid(0, 0)               = 0
[pid 18248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18248] write(3, "1000", 4)         = 4
[pid 18248] close(3)                    = 0
[pid 18248] memfd_create("syzkaller", 0) = 3
[pid 18248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18248] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18248] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18248] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18248] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18248] close(4)                    = 0
[pid 18248] close(3)                    = 0
[pid 18248] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18248] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18248] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18248] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18248] open("./bus", O_RDONLY)     = 3
[pid 18248] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18248] exit_group(0)               = ?
[pid 18248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18249 attached
, child_tidptr=0x55555606b5d0) = 18249
[pid 18249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18249] setpgid(0, 0)               = 0
[pid 18249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18249] write(3, "1000", 4)         = 4
[pid 18249] close(3)                    = 0
[pid 18249] memfd_create("syzkaller", 0) = 3
[pid 18249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18249] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18249] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18249] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18249] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18249] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18249] close(4)                    = 0
[pid 18249] close(3)                    = 0
[pid 18249] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18249] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18249] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18249] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18249] open("./bus", O_RDONLY)     = 3
[pid 18249] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18249] exit_group(0)               = ?
[pid 18249] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18249, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18250 attached
, child_tidptr=0x55555606b5d0) = 18250
[pid 18250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18250] setpgid(0, 0)               = 0
[pid 18250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18250] write(3, "1000", 4)         = 4
[pid 18250] close(3)                    = 0
[pid 18250] memfd_create("syzkaller", 0) = 3
[pid 18250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18250] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18250] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18250] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18250] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18250] close(4)                    = 0
[pid 18250] close(3)                    = 0
[pid 18250] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18250] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18250] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18250] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18250] open("./bus", O_RDONLY)     = 3
[pid 18250] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18250] exit_group(0)               = ?
[pid 18250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18250, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18251 attached
, child_tidptr=0x55555606b5d0) = 18251
[pid 18251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18251] setpgid(0, 0)               = 0
[pid 18251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18251] write(3, "1000", 4)         = 4
[pid 18251] close(3)                    = 0
[pid 18251] memfd_create("syzkaller", 0) = 3
[pid 18251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18251] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18251] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18251] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18251] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18251] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18251] close(4)                    = 0
[pid 18251] close(3)                    = 0
[pid 18251] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18251] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18251] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18251] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18251] open("./bus", O_RDONLY)     = 3
[pid 18251] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18251] exit_group(0)               = ?
[pid 18251] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18251, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18252 attached
, child_tidptr=0x55555606b5d0) = 18252
[pid 18252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18252] setpgid(0, 0)               = 0
[pid 18252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18252] write(3, "1000", 4)         = 4
[pid 18252] close(3)                    = 0
[pid 18252] memfd_create("syzkaller", 0) = 3
[pid 18252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18252] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18252] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18252] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18252] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18252] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18252] close(4)                    = 0
[pid 18252] close(3)                    = 0
[pid 18252] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18252] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18252] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18252] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18252] open("./bus", O_RDONLY)     = 3
[pid 18252] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18252] exit_group(0)               = ?
[pid 18252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18253 attached
, child_tidptr=0x55555606b5d0) = 18253
[pid 18253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18253] setpgid(0, 0)               = 0
[pid 18253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18253] write(3, "1000", 4)         = 4
[pid 18253] close(3)                    = 0
[pid 18253] memfd_create("syzkaller", 0) = 3
[pid 18253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18253] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18253] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18253] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18253] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18253] close(4)                    = 0
[pid 18253] close(3)                    = 0
[pid 18253] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18253] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18253] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18253] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18253] open("./bus", O_RDONLY)     = 3
[pid 18253] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18253] exit_group(0)               = ?
[pid 18253] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18253, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18254 attached
, child_tidptr=0x55555606b5d0) = 18254
[pid 18254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18254] setpgid(0, 0)               = 0
[pid 18254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18254] write(3, "1000", 4)         = 4
[pid 18254] close(3)                    = 0
[pid 18254] memfd_create("syzkaller", 0) = 3
[pid 18254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18254] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18254] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18254] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18254] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18254] close(4)                    = 0
[pid 18254] close(3)                    = 0
[pid 18254] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18254] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18254] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18254] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18254] open("./bus", O_RDONLY)     = 3
[pid 18254] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18254] exit_group(0)               = ?
[pid 18254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18255 attached
 <unfinished ...>
[pid 18255] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18255
[pid 18255] <... prctl resumed>)        = 0
[pid 18255] setpgid(0, 0)               = 0
[pid 18255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18255] write(3, "1000", 4)         = 4
[pid 18255] close(3)                    = 0
[pid 18255] memfd_create("syzkaller", 0) = 3
[pid 18255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18255] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18255] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18255] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18255] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18255] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18255] close(4)                    = 0
[pid 18255] close(3)                    = 0
[pid 18255] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18255] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18255] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18255] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18255] open("./bus", O_RDONLY)     = 3
[pid 18255] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18255] exit_group(0)               = ?
[pid 18255] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18255, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18256 attached
, child_tidptr=0x55555606b5d0) = 18256
[pid 18256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18256] setpgid(0, 0)               = 0
[pid 18256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18256] write(3, "1000", 4)         = 4
[pid 18256] close(3)                    = 0
[pid 18256] memfd_create("syzkaller", 0) = 3
[pid 18256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18256] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18256] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18256] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18256] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18256] close(4)                    = 0
[pid 18256] close(3)                    = 0
[pid 18256] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18256] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18256] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18256] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18256] open("./bus", O_RDONLY)     = 3
[pid 18256] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18256] exit_group(0)               = ?
[pid 18256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18257 attached
, child_tidptr=0x55555606b5d0) = 18257
[pid 18257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18257] setpgid(0, 0)               = 0
[pid 18257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18257] write(3, "1000", 4)         = 4
[pid 18257] close(3)                    = 0
[pid 18257] memfd_create("syzkaller", 0) = 3
[pid 18257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18257] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18257] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18257] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18257] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18257] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18257] close(4)                    = 0
[pid 18257] close(3)                    = 0
[pid 18257] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18257] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18257] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18257] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18257] open("./bus", O_RDONLY)     = 3
[pid 18257] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18257] exit_group(0)               = ?
[pid 18257] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18257, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18258
./strace-static-x86_64: Process 18258 attached
[pid 18258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18258] setpgid(0, 0)               = 0
[pid 18258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18258] write(3, "1000", 4)         = 4
[pid 18258] close(3)                    = 0
[pid 18258] memfd_create("syzkaller", 0) = 3
[pid 18258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18258] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18258] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18258] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18258] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18258] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18258] close(4)                    = 0
[pid 18258] close(3)                    = 0
[pid 18258] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18258] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18258] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18258] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18258] open("./bus", O_RDONLY)     = 3
[pid 18258] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18258] exit_group(0)               = ?
[pid 18258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18259 attached
, child_tidptr=0x55555606b5d0) = 18259
[pid 18259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18259] setpgid(0, 0)               = 0
[pid 18259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18259] write(3, "1000", 4)         = 4
[pid 18259] close(3)                    = 0
[pid 18259] memfd_create("syzkaller", 0) = 3
[pid 18259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18259] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18259] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18259] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18259] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18259] close(4)                    = 0
[pid 18259] close(3)                    = 0
[pid 18259] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18259] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18259] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18259] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18259] open("./bus", O_RDONLY)     = 3
[pid 18259] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18259] exit_group(0)               = ?
[pid 18259] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18259, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18260
./strace-static-x86_64: Process 18260 attached
[pid 18260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18260] setpgid(0, 0)               = 0
[pid 18260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18260] write(3, "1000", 4)         = 4
[pid 18260] close(3)                    = 0
[pid 18260] memfd_create("syzkaller", 0) = 3
[pid 18260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18260] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18260] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18260] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18260] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18260] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18260] close(4)                    = 0
[pid 18260] close(3)                    = 0
[pid 18260] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18260] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18260] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18260] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18260] open("./bus", O_RDONLY)     = 3
[pid 18260] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18260] exit_group(0)               = ?
[pid 18260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18261 attached
, child_tidptr=0x55555606b5d0) = 18261
[pid 18261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18261] setpgid(0, 0)               = 0
[pid 18261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18261] write(3, "1000", 4)         = 4
[pid 18261] close(3)                    = 0
[pid 18261] memfd_create("syzkaller", 0) = 3
[pid 18261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18261] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18261] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18261] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18261] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18261] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18261] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18261] close(4)                    = 0
[pid 18261] close(3)                    = 0
[pid 18261] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18261] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18261] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18261] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18261] open("./bus", O_RDONLY)     = 3
[pid 18261] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18261] exit_group(0)               = ?
[pid 18261] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18261, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18262 attached
, child_tidptr=0x55555606b5d0) = 18262
[pid 18262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18262] setpgid(0, 0)               = 0
[pid 18262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18262] write(3, "1000", 4)         = 4
[pid 18262] close(3)                    = 0
[pid 18262] memfd_create("syzkaller", 0) = 3
[pid 18262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18262] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18262] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18262] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18262] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18262] close(4)                    = 0
[pid 18262] close(3)                    = 0
[pid 18262] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18262] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18262] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18262] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18262] open("./bus", O_RDONLY)     = 3
[pid 18262] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18262] exit_group(0)               = ?
[pid 18262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18263 attached
, child_tidptr=0x55555606b5d0) = 18263
[pid 18263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18263] setpgid(0, 0)               = 0
[pid 18263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18263] write(3, "1000", 4)         = 4
[pid 18263] close(3)                    = 0
[pid 18263] memfd_create("syzkaller", 0) = 3
[pid 18263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18263] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18263] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18263] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18263] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18263] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18263] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18263] close(4)                    = 0
[pid 18263] close(3)                    = 0
[pid 18263] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18263] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18263] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18263] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18263] open("./bus", O_RDONLY)     = 3
[pid 18263] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18263] exit_group(0)               = ?
[pid 18263] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18263, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18264 attached
, child_tidptr=0x55555606b5d0) = 18264
[pid 18264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18264] setpgid(0, 0)               = 0
[pid 18264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18264] write(3, "1000", 4)         = 4
[pid 18264] close(3)                    = 0
[pid 18264] memfd_create("syzkaller", 0) = 3
[pid 18264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18264] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18264] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18264] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18264] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18264] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18264] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18264] close(4)                    = 0
[pid 18264] close(3)                    = 0
[pid 18264] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18264] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18264] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18264] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18264] open("./bus", O_RDONLY)     = 3
[pid 18264] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18264] exit_group(0)               = ?
[pid 18264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18264, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18265 attached
, child_tidptr=0x55555606b5d0) = 18265
[pid 18265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18265] setpgid(0, 0)               = 0
[pid 18265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18265] write(3, "1000", 4)         = 4
[pid 18265] close(3)                    = 0
[pid 18265] memfd_create("syzkaller", 0) = 3
[pid 18265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18265] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18265] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18265] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18265] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18265] close(4)                    = 0
[pid 18265] close(3)                    = 0
[pid 18265] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18265] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18265] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18265] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18265] open("./bus", O_RDONLY)     = 3
[pid 18265] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18265] exit_group(0)               = ?
[pid 18265] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18265, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18266
./strace-static-x86_64: Process 18266 attached
[pid 18266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18266] setpgid(0, 0)               = 0
[pid 18266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18266] write(3, "1000", 4)         = 4
[pid 18266] close(3)                    = 0
[pid 18266] memfd_create("syzkaller", 0) = 3
[pid 18266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18266] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18266] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18266] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18266] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18266] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18266] close(4)                    = 0
[pid 18266] close(3)                    = 0
[pid 18266] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18266] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18266] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18266] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18266] open("./bus", O_RDONLY)     = 3
[pid 18266] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18266] exit_group(0)               = ?
[pid 18266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18267 attached
, child_tidptr=0x55555606b5d0) = 18267
[pid 18267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18267] setpgid(0, 0)               = 0
[pid 18267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18267] write(3, "1000", 4)         = 4
[pid 18267] close(3)                    = 0
[pid 18267] memfd_create("syzkaller", 0) = 3
[pid 18267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18267] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18267] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18267] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18267] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18267] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18267] close(4)                    = 0
[pid 18267] close(3)                    = 0
[pid 18267] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18267] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18267] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18267] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18267] open("./bus", O_RDONLY)     = 3
[pid 18267] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18267] exit_group(0)               = ?
[pid 18267] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18267, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18268 attached
, child_tidptr=0x55555606b5d0) = 18268
[pid 18268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18268] setpgid(0, 0)               = 0
[pid 18268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18268] write(3, "1000", 4)         = 4
[pid 18268] close(3)                    = 0
[pid 18268] memfd_create("syzkaller", 0) = 3
[pid 18268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18268] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18268] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18268] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18268] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18268] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18268] close(4)                    = 0
[pid 18268] close(3)                    = 0
[pid 18268] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18268] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18268] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18268] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18268] open("./bus", O_RDONLY)     = 3
[pid 18268] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18268] exit_group(0)               = ?
[pid 18268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18269 attached
, child_tidptr=0x55555606b5d0) = 18269
[pid 18269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18269] setpgid(0, 0)               = 0
[pid 18269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18269] write(3, "1000", 4)         = 4
[pid 18269] close(3)                    = 0
[pid 18269] memfd_create("syzkaller", 0) = 3
[pid 18269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18269] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18269] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18269] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18269] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18269] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18269] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18269] close(4)                    = 0
[pid 18269] close(3)                    = 0
[pid 18269] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18269] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18269] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18269] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18269] open("./bus", O_RDONLY)     = 3
[pid 18269] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18269] exit_group(0)               = ?
[pid 18269] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18269, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18270 attached
, child_tidptr=0x55555606b5d0) = 18270
[pid 18270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18270] setpgid(0, 0)               = 0
[pid 18270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18270] write(3, "1000", 4)         = 4
[pid 18270] close(3)                    = 0
[pid 18270] memfd_create("syzkaller", 0) = 3
[pid 18270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18270] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18270] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18270] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18270] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18270] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18270] close(4)                    = 0
[pid 18270] close(3)                    = 0
[pid 18270] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18270] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18270] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18270] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18270] open("./bus", O_RDONLY)     = 3
[pid 18270] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18270] exit_group(0)               = ?
[pid 18270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18270, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18271
./strace-static-x86_64: Process 18271 attached
[pid 18271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18271] setpgid(0, 0)               = 0
[pid 18271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18271] write(3, "1000", 4)         = 4
[pid 18271] close(3)                    = 0
[pid 18271] memfd_create("syzkaller", 0) = 3
[pid 18271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18271] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18271] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18271] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18271] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18271] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18271] close(4)                    = 0
[pid 18271] close(3)                    = 0
[pid 18271] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18271] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18271] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18271] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18271] open("./bus", O_RDONLY)     = 3
[pid 18271] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18271] exit_group(0)               = ?
[pid 18271] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18271, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18272 attached
 <unfinished ...>
[pid 18272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18272] setpgid(0, 0)               = 0
[pid 18272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18272
[pid 18272] <... openat resumed>)       = 3
[pid 18272] write(3, "1000", 4)         = 4
[pid 18272] close(3)                    = 0
[pid 18272] memfd_create("syzkaller", 0) = 3
[pid 18272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18272] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18272] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18272] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18272] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18272] close(4)                    = 0
[pid 18272] close(3)                    = 0
[pid 18272] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18272] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18272] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18272] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18272] open("./bus", O_RDONLY)     = 3
[pid 18272] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18272] exit_group(0)               = ?
[pid 18272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18273 attached
, child_tidptr=0x55555606b5d0) = 18273
[pid 18273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18273] setpgid(0, 0)               = 0
[pid 18273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18273] write(3, "1000", 4)         = 4
[pid 18273] close(3)                    = 0
[pid 18273] memfd_create("syzkaller", 0) = 3
[pid 18273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18273] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18273] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18273] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18273] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18273] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18273] close(4)                    = 0
[pid 18273] close(3)                    = 0
[pid 18273] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18273] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18273] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18273] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18273] open("./bus", O_RDONLY)     = 3
[pid 18273] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18273] exit_group(0)               = ?
[pid 18273] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18273, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18274 attached
, child_tidptr=0x55555606b5d0) = 18274
[pid 18274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18274] setpgid(0, 0)               = 0
[pid 18274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18274] write(3, "1000", 4)         = 4
[pid 18274] close(3)                    = 0
[pid 18274] memfd_create("syzkaller", 0) = 3
[pid 18274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18274] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18274] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18274] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18274] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18274] close(4)                    = 0
[pid 18274] close(3)                    = 0
[pid 18274] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18274] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18274] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18274] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18274] open("./bus", O_RDONLY)     = 3
[pid 18274] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18274] exit_group(0)               = ?
[pid 18274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18275 attached
, child_tidptr=0x55555606b5d0) = 18275
[pid 18275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18275] setpgid(0, 0)               = 0
[pid 18275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18275] write(3, "1000", 4)         = 4
[pid 18275] close(3)                    = 0
[pid 18275] memfd_create("syzkaller", 0) = 3
[pid 18275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18275] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18275] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18275] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18275] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18275] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18275] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18275] close(4)                    = 0
[pid 18275] close(3)                    = 0
[pid 18275] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18275] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18275] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18275] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18275] open("./bus", O_RDONLY)     = 3
[pid 18275] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18275] exit_group(0)               = ?
[pid 18275] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18275, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18276 attached
, child_tidptr=0x55555606b5d0) = 18276
[pid 18276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18276] setpgid(0, 0)               = 0
[pid 18276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18276] write(3, "1000", 4)         = 4
[pid 18276] close(3)                    = 0
[pid 18276] memfd_create("syzkaller", 0) = 3
[pid 18276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18276] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18276] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18276] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18276] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18276] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18276] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18276] close(4)                    = 0
[pid 18276] close(3)                    = 0
[pid 18276] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18276] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18276] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18276] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18276] open("./bus", O_RDONLY)     = 3
[pid 18276] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18276] exit_group(0)               = ?
[pid 18276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18277 attached
, child_tidptr=0x55555606b5d0) = 18277
[pid 18277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18277] setpgid(0, 0)               = 0
[pid 18277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18277] write(3, "1000", 4)         = 4
[pid 18277] close(3)                    = 0
[pid 18277] memfd_create("syzkaller", 0) = 3
[pid 18277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18277] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18277] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18277] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18277] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18277] close(4)                    = 0
[pid 18277] close(3)                    = 0
[pid 18277] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18277] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18277] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18277] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18277] open("./bus", O_RDONLY)     = 3
[pid 18277] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18277] exit_group(0)               = ?
[pid 18277] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18277, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18278
./strace-static-x86_64: Process 18278 attached
[pid 18278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18278] setpgid(0, 0)               = 0
[pid 18278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18278] write(3, "1000", 4)         = 4
[pid 18278] close(3)                    = 0
[pid 18278] memfd_create("syzkaller", 0) = 3
[pid 18278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18278] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18278] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18278] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18278] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18278] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18278] close(4)                    = 0
[pid 18278] close(3)                    = 0
[pid 18278] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18278] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18278] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18278] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18278] open("./bus", O_RDONLY)     = 3
[pid 18278] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18278] exit_group(0)               = ?
[pid 18278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18279 attached
, child_tidptr=0x55555606b5d0) = 18279
[pid 18279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18279] setpgid(0, 0)               = 0
[pid 18279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18279] write(3, "1000", 4)         = 4
[pid 18279] close(3)                    = 0
[pid 18279] memfd_create("syzkaller", 0) = 3
[pid 18279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18279] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18279] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18279] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18279] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18279] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18279] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18279] close(4)                    = 0
[pid 18279] close(3)                    = 0
[pid 18279] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18279] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18279] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18279] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18279] open("./bus", O_RDONLY)     = 3
[pid 18279] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18279] exit_group(0)               = ?
[pid 18279] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18279, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18280 attached
, child_tidptr=0x55555606b5d0) = 18280
[pid 18280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18280] setpgid(0, 0)               = 0
[pid 18280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18280] write(3, "1000", 4)         = 4
[pid 18280] close(3)                    = 0
[pid 18280] memfd_create("syzkaller", 0) = 3
[pid 18280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18280] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18280] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18280] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18280] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18280] close(4)                    = 0
[pid 18280] close(3)                    = 0
[pid 18280] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18280] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18280] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18280] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18280] open("./bus", O_RDONLY)     = 3
[pid 18280] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18280] exit_group(0)               = ?
[pid 18280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18281 attached
, child_tidptr=0x55555606b5d0) = 18281
[pid 18281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18281] setpgid(0, 0)               = 0
[pid 18281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18281] write(3, "1000", 4)         = 4
[pid 18281] close(3)                    = 0
[pid 18281] memfd_create("syzkaller", 0) = 3
[pid 18281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18281] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18281] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18281] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18281] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18281] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18281] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18281] close(4)                    = 0
[pid 18281] close(3)                    = 0
[pid 18281] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18281] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18281] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18281] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18281] open("./bus", O_RDONLY)     = 3
[pid 18281] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18281] exit_group(0)               = ?
[pid 18281] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18281, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18282 attached
, child_tidptr=0x55555606b5d0) = 18282
[pid 18282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18282] setpgid(0, 0)               = 0
[pid 18282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18282] write(3, "1000", 4)         = 4
[pid 18282] close(3)                    = 0
[pid 18282] memfd_create("syzkaller", 0) = 3
[pid 18282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18282] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18282] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18282] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18282] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18282] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18282] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18282] close(4)                    = 0
[pid 18282] close(3)                    = 0
[pid 18282] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18282] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18282] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18282] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18282] open("./bus", O_RDONLY)     = 3
[pid 18282] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18282] exit_group(0)               = ?
[pid 18282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18283 attached
, child_tidptr=0x55555606b5d0) = 18283
[pid 18283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18283] setpgid(0, 0)               = 0
[pid 18283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18283] write(3, "1000", 4)         = 4
[pid 18283] close(3)                    = 0
[pid 18283] memfd_create("syzkaller", 0) = 3
[pid 18283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18283] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18283] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18283] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18283] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18283] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18283] close(4)                    = 0
[pid 18283] close(3)                    = 0
[pid 18283] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18283] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18283] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18283] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18283] open("./bus", O_RDONLY)     = 3
[pid 18283] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18283] exit_group(0)               = ?
[pid 18283] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18283, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18284 attached
, child_tidptr=0x55555606b5d0) = 18284
[pid 18284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18284] setpgid(0, 0)               = 0
[pid 18284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18284] write(3, "1000", 4)         = 4
[pid 18284] close(3)                    = 0
[pid 18284] memfd_create("syzkaller", 0) = 3
[pid 18284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18284] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18284] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18284] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18284] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18284] close(4)                    = 0
[pid 18284] close(3)                    = 0
[pid 18284] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18284] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18284] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18284] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18284] open("./bus", O_RDONLY)     = 3
[pid 18284] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18284] exit_group(0)               = ?
[pid 18284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18285
./strace-static-x86_64: Process 18285 attached
[pid 18285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18285] setpgid(0, 0)               = 0
[pid 18285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18285] write(3, "1000", 4)         = 4
[pid 18285] close(3)                    = 0
[pid 18285] memfd_create("syzkaller", 0) = 3
[pid 18285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18285] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18285] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18285] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18285] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18285] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18285] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18285] close(4)                    = 0
[pid 18285] close(3)                    = 0
[pid 18285] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18285] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18285] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18285] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18285] open("./bus", O_RDONLY)     = 3
[pid 18285] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18285] exit_group(0)               = ?
[pid 18285] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18285, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18286 attached
, child_tidptr=0x55555606b5d0) = 18286
[pid 18286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18286] setpgid(0, 0)               = 0
[pid 18286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18286] write(3, "1000", 4)         = 4
[pid 18286] close(3)                    = 0
[pid 18286] memfd_create("syzkaller", 0) = 3
[pid 18286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18286] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18286] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18286] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18286] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18286] close(4)                    = 0
[pid 18286] close(3)                    = 0
[pid 18286] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18286] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18286] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18286] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18286] open("./bus", O_RDONLY)     = 3
[pid 18286] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18286] exit_group(0)               = ?
[pid 18286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18287 attached
, child_tidptr=0x55555606b5d0) = 18287
[pid 18287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18287] setpgid(0, 0)               = 0
[pid 18287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18287] write(3, "1000", 4)         = 4
[pid 18287] close(3)                    = 0
[pid 18287] memfd_create("syzkaller", 0) = 3
[pid 18287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18287] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18287] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18287] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18287] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18287] close(4)                    = 0
[pid 18287] close(3)                    = 0
[pid 18287] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18287] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18287] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18287] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18287] open("./bus", O_RDONLY)     = 3
[pid 18287] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18287] exit_group(0)               = ?
[pid 18287] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18287, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18288
./strace-static-x86_64: Process 18288 attached
[pid 18288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18288] setpgid(0, 0)               = 0
[pid 18288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18288] write(3, "1000", 4)         = 4
[pid 18288] close(3)                    = 0
[pid 18288] memfd_create("syzkaller", 0) = 3
[pid 18288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18288] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18288] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18288] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18288] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18288] close(4)                    = 0
[pid 18288] close(3)                    = 0
[pid 18288] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18288] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18288] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18288] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18288] open("./bus", O_RDONLY)     = 3
[pid 18288] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18288] exit_group(0)               = ?
[pid 18288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18289 attached
, child_tidptr=0x55555606b5d0) = 18289
[pid 18289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18289] setpgid(0, 0)               = 0
[pid 18289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18289] write(3, "1000", 4)         = 4
[pid 18289] close(3)                    = 0
[pid 18289] memfd_create("syzkaller", 0) = 3
[pid 18289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18289] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18289] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18289] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18289] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18289] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18289] close(4)                    = 0
[pid 18289] close(3)                    = 0
[pid 18289] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18289] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18289] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18289] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18289] open("./bus", O_RDONLY)     = 3
[pid 18289] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18289] exit_group(0)               = ?
[pid 18289] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18289, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18290 attached
, child_tidptr=0x55555606b5d0) = 18290
[pid 18290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18290] setpgid(0, 0)               = 0
[pid 18290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18290] write(3, "1000", 4)         = 4
[pid 18290] close(3)                    = 0
[pid 18290] memfd_create("syzkaller", 0) = 3
[pid 18290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18290] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18290] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18290] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18290] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18290] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18290] close(4)                    = 0
[pid 18290] close(3)                    = 0
[pid 18290] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18290] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18290] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18290] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18290] open("./bus", O_RDONLY)     = 3
[pid 18290] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18290] exit_group(0)               = ?
[pid 18290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18291 attached
, child_tidptr=0x55555606b5d0) = 18291
[pid 18291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18291] setpgid(0, 0)               = 0
[pid 18291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18291] write(3, "1000", 4)         = 4
[pid 18291] close(3)                    = 0
[pid 18291] memfd_create("syzkaller", 0) = 3
[pid 18291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18291] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18291] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18291] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18291] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18291] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18291] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18291] close(4)                    = 0
[pid 18291] close(3)                    = 0
[pid 18291] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18291] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18291] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18291] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18291] open("./bus", O_RDONLY)     = 3
[pid 18291] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18291] exit_group(0)               = ?
[pid 18291] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18291, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18292 attached
, child_tidptr=0x55555606b5d0) = 18292
[pid 18292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18292] setpgid(0, 0)               = 0
[pid 18292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18292] write(3, "1000", 4)         = 4
[pid 18292] close(3)                    = 0
[pid 18292] memfd_create("syzkaller", 0) = 3
[pid 18292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18292] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18292] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18292] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18292] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18292] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18292] close(4)                    = 0
[pid 18292] close(3)                    = 0
[pid 18292] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18292] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18292] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18292] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18292] open("./bus", O_RDONLY)     = 3
[pid 18292] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18292] exit_group(0)               = ?
[pid 18292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18293 attached
, child_tidptr=0x55555606b5d0) = 18293
[pid 18293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18293] setpgid(0, 0)               = 0
[pid 18293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18293] write(3, "1000", 4)         = 4
[pid 18293] close(3)                    = 0
[pid 18293] memfd_create("syzkaller", 0) = 3
[pid 18293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18293] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18293] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18293] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18293] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18293] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18293] close(4)                    = 0
[pid 18293] close(3)                    = 0
[pid 18293] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18293] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18293] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18293] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18293] open("./bus", O_RDONLY)     = 3
[pid 18293] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18293] exit_group(0)               = ?
[pid 18293] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18293, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18294 attached
, child_tidptr=0x55555606b5d0) = 18294
[pid 18294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18294] setpgid(0, 0)               = 0
[pid 18294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18294] write(3, "1000", 4)         = 4
[pid 18294] close(3)                    = 0
[pid 18294] memfd_create("syzkaller", 0) = 3
[pid 18294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18294] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18294] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18294] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18294] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18294] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18294] close(4)                    = 0
[pid 18294] close(3)                    = 0
[pid 18294] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18294] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18294] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18294] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18294] open("./bus", O_RDONLY)     = 3
[pid 18294] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18294] exit_group(0)               = ?
[pid 18294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18294, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18295 attached
, child_tidptr=0x55555606b5d0) = 18295
[pid 18295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18295] setpgid(0, 0)               = 0
[pid 18295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18295] write(3, "1000", 4)         = 4
[pid 18295] close(3)                    = 0
[pid 18295] memfd_create("syzkaller", 0) = 3
[pid 18295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18295] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18295] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18295] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18295] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18295] close(4)                    = 0
[pid 18295] close(3)                    = 0
[pid 18295] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18295] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18295] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18295] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18295] open("./bus", O_RDONLY)     = 3
[pid 18295] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18295] exit_group(0)               = ?
[pid 18295] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18295, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18296 attached
, child_tidptr=0x55555606b5d0) = 18296
[pid 18296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18296] setpgid(0, 0)               = 0
[pid 18296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18296] write(3, "1000", 4)         = 4
[pid 18296] close(3)                    = 0
[pid 18296] memfd_create("syzkaller", 0) = 3
[pid 18296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18296] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18296] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18296] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18296] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18296] close(4)                    = 0
[pid 18296] close(3)                    = 0
[pid 18296] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18296] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18296] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18296] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18296] open("./bus", O_RDONLY)     = 3
[pid 18296] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18296] exit_group(0)               = ?
[pid 18296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18297 attached
, child_tidptr=0x55555606b5d0) = 18297
[pid 18297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18297] setpgid(0, 0)               = 0
[pid 18297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18297] write(3, "1000", 4)         = 4
[pid 18297] close(3)                    = 0
[pid 18297] memfd_create("syzkaller", 0) = 3
[pid 18297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18297] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18297] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18297] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18297] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18297] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18297] close(4)                    = 0
[pid 18297] close(3)                    = 0
[pid 18297] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18297] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18297] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18297] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18297] open("./bus", O_RDONLY)     = 3
[pid 18297] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18297] exit_group(0)               = ?
[pid 18297] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18297, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18298 attached
, child_tidptr=0x55555606b5d0) = 18298
[pid 18298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18298] setpgid(0, 0)               = 0
[pid 18298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18298] write(3, "1000", 4)         = 4
[pid 18298] close(3)                    = 0
[pid 18298] memfd_create("syzkaller", 0) = 3
[pid 18298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18298] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18298] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18298] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18298] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18298] close(4)                    = 0
[pid 18298] close(3)                    = 0
[pid 18298] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18298] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18298] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18298] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18298] open("./bus", O_RDONLY)     = 3
[pid 18298] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18298] exit_group(0)               = ?
[pid 18298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18299 attached
, child_tidptr=0x55555606b5d0) = 18299
[pid 18299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18299] setpgid(0, 0)               = 0
[pid 18299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18299] write(3, "1000", 4)         = 4
[pid 18299] close(3)                    = 0
[pid 18299] memfd_create("syzkaller", 0) = 3
[pid 18299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18299] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18299] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18299] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18299] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18299] close(4)                    = 0
[pid 18299] close(3)                    = 0
[pid 18299] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18299] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18299] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18299] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18299] open("./bus", O_RDONLY)     = 3
[pid 18299] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18299] exit_group(0)               = ?
[pid 18299] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18299, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18300 attached
 <unfinished ...>
[pid 18300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18300] setpgid(0, 0)               = 0
[pid 18300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18300
[pid 18300] <... openat resumed>)       = 3
[pid 18300] write(3, "1000", 4)         = 4
[pid 18300] close(3)                    = 0
[pid 18300] memfd_create("syzkaller", 0) = 3
[pid 18300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18300] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18300] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18300] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18300] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18300] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18300] close(4)                    = 0
[pid 18300] close(3)                    = 0
[pid 18300] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18300] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18300] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18300] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18300] open("./bus", O_RDONLY)     = 3
[pid 18300] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18300] exit_group(0)               = ?
[pid 18300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18300, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18301
./strace-static-x86_64: Process 18301 attached
[pid 18301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18301] setpgid(0, 0)               = 0
[pid 18301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18301] write(3, "1000", 4)         = 4
[pid 18301] close(3)                    = 0
[pid 18301] memfd_create("syzkaller", 0) = 3
[pid 18301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18301] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18301] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18301] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18301] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18301] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18301] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18301] close(4)                    = 0
[pid 18301] close(3)                    = 0
[pid 18301] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18301] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18301] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18301] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18301] open("./bus", O_RDONLY)     = 3
[pid 18301] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18301] exit_group(0)               = ?
[pid 18301] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18301, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18302 attached
 <unfinished ...>
[pid 18302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18302] setpgid(0, 0)               = 0
[pid 18302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18302
[pid 18302] <... openat resumed>)       = 3
[pid 18302] write(3, "1000", 4)         = 4
[pid 18302] close(3)                    = 0
[pid 18302] memfd_create("syzkaller", 0) = 3
[pid 18302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18302] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18302] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18302] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18302] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18302] close(4)                    = 0
[pid 18302] close(3)                    = 0
[pid 18302] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18302] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18302] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18302] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18302] open("./bus", O_RDONLY)     = 3
[pid 18302] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18302] exit_group(0)               = ?
[pid 18302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18303 attached
 <unfinished ...>
[pid 18303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18303
[pid 18303] setpgid(0, 0)               = 0
[pid 18303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18303] write(3, "1000", 4)         = 4
[pid 18303] close(3)                    = 0
[pid 18303] memfd_create("syzkaller", 0) = 3
[pid 18303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18303] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18303] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18303] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18303] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18303] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18303] close(4)                    = 0
[pid 18303] close(3)                    = 0
[pid 18303] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18303] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18303] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18303] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18303] open("./bus", O_RDONLY)     = 3
[pid 18303] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18303] exit_group(0)               = ?
[pid 18303] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18303, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18304
./strace-static-x86_64: Process 18304 attached
[pid 18304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18304] setpgid(0, 0)               = 0
[pid 18304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18304] write(3, "1000", 4)         = 4
[pid 18304] close(3)                    = 0
[pid 18304] memfd_create("syzkaller", 0) = 3
[pid 18304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18304] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18304] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18304] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18304] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18304] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18304] close(4)                    = 0
[pid 18304] close(3)                    = 0
[pid 18304] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18304] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18304] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18304] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18304] open("./bus", O_RDONLY)     = 3
[pid 18304] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18304] exit_group(0)               = ?
[pid 18304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18305 attached
, child_tidptr=0x55555606b5d0) = 18305
[pid 18305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18305] setpgid(0, 0)               = 0
[pid 18305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18305] write(3, "1000", 4)         = 4
[pid 18305] close(3)                    = 0
[pid 18305] memfd_create("syzkaller", 0) = 3
[pid 18305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18305] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18305] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18305] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18305] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18305] close(4)                    = 0
[pid 18305] close(3)                    = 0
[pid 18305] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18305] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18305] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18305] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18305] open("./bus", O_RDONLY)     = 3
[pid 18305] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18305] exit_group(0)               = ?
[pid 18305] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18305, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18306 attached
, child_tidptr=0x55555606b5d0) = 18306
[pid 18306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18306] setpgid(0, 0)               = 0
[pid 18306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18306] write(3, "1000", 4)         = 4
[pid 18306] close(3)                    = 0
[pid 18306] memfd_create("syzkaller", 0) = 3
[pid 18306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18306] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18306] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18306] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18306] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18306] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18306] close(4)                    = 0
[pid 18306] close(3)                    = 0
[pid 18306] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18306] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18306] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18306] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18306] open("./bus", O_RDONLY)     = 3
[pid 18306] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18306] exit_group(0)               = ?
[pid 18306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18307 attached
, child_tidptr=0x55555606b5d0) = 18307
[pid 18307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18307] setpgid(0, 0)               = 0
[pid 18307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18307] write(3, "1000", 4)         = 4
[pid 18307] close(3)                    = 0
[pid 18307] memfd_create("syzkaller", 0) = 3
[pid 18307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18307] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18307] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18307] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18307] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18307] close(4)                    = 0
[pid 18307] close(3)                    = 0
[pid 18307] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18307] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18307] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18307] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18307] open("./bus", O_RDONLY)     = 3
[pid 18307] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18307] exit_group(0)               = ?
[pid 18307] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18307, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18308
./strace-static-x86_64: Process 18308 attached
[pid 18308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18308] setpgid(0, 0)               = 0
[pid 18308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18308] write(3, "1000", 4)         = 4
[pid 18308] close(3)                    = 0
[pid 18308] memfd_create("syzkaller", 0) = 3
[pid 18308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18308] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18308] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18308] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18308] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18308] close(4)                    = 0
[pid 18308] close(3)                    = 0
[pid 18308] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18308] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18308] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18308] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18308] open("./bus", O_RDONLY)     = 3
[pid 18308] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18308] exit_group(0)               = ?
[pid 18308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18309 attached
, child_tidptr=0x55555606b5d0) = 18309
[pid 18309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18309] setpgid(0, 0)               = 0
[pid 18309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18309] write(3, "1000", 4)         = 4
[pid 18309] close(3)                    = 0
[pid 18309] memfd_create("syzkaller", 0) = 3
[pid 18309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18309] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18309] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18309] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18309] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18309] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18309] close(4)                    = 0
[pid 18309] close(3)                    = 0
[pid 18309] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18309] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18309] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18309] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18309] open("./bus", O_RDONLY)     = 3
[pid 18309] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18309] exit_group(0)               = ?
[pid 18309] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18309, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18310 attached
, child_tidptr=0x55555606b5d0) = 18310
[pid 18310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18310] setpgid(0, 0)               = 0
[pid 18310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18310] write(3, "1000", 4)         = 4
[pid 18310] close(3)                    = 0
[pid 18310] memfd_create("syzkaller", 0) = 3
[pid 18310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18310] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18310] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18310] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18310] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18310] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18310] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18310] close(4)                    = 0
[pid 18310] close(3)                    = 0
[pid 18310] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18310] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18310] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18310] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18310] open("./bus", O_RDONLY)     = 3
[pid 18310] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18310] exit_group(0)               = ?
[pid 18310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18310, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18311 attached
, child_tidptr=0x55555606b5d0) = 18311
[pid 18311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18311] setpgid(0, 0)               = 0
[pid 18311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18311] write(3, "1000", 4)         = 4
[pid 18311] close(3)                    = 0
[pid 18311] memfd_create("syzkaller", 0) = 3
[pid 18311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18311] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18311] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18311] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18311] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18311] close(4)                    = 0
[pid 18311] close(3)                    = 0
[pid 18311] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18311] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18311] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18311] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18311] open("./bus", O_RDONLY)     = 3
[pid 18311] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18311] exit_group(0)               = ?
[pid 18311] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18311, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18312 attached
, child_tidptr=0x55555606b5d0) = 18312
[pid 18312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18312] setpgid(0, 0)               = 0
[pid 18312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18312] write(3, "1000", 4)         = 4
[pid 18312] close(3)                    = 0
[pid 18312] memfd_create("syzkaller", 0) = 3
[pid 18312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18312] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18312] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18312] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18312] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18312] close(4)                    = 0
[pid 18312] close(3)                    = 0
[pid 18312] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18312] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18312] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18312] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18312] open("./bus", O_RDONLY)     = 3
[pid 18312] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18312] exit_group(0)               = ?
[pid 18312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18313 attached
, child_tidptr=0x55555606b5d0) = 18313
[pid 18313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18313] setpgid(0, 0)               = 0
[pid 18313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18313] write(3, "1000", 4)         = 4
[pid 18313] close(3)                    = 0
[pid 18313] memfd_create("syzkaller", 0) = 3
[pid 18313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18313] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18313] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18313] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18313] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18313] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18313] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18313] close(4)                    = 0
[pid 18313] close(3)                    = 0
[pid 18313] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18313] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18313] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18313] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18313] open("./bus", O_RDONLY)     = 3
[pid 18313] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18313] exit_group(0)               = ?
[pid 18313] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18313, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18314 attached
 <unfinished ...>
[pid 18314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18314
[pid 18314] setpgid(0, 0)               = 0
[pid 18314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18314] write(3, "1000", 4)         = 4
[pid 18314] close(3)                    = 0
[pid 18314] memfd_create("syzkaller", 0) = 3
[pid 18314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18314] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18314] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18314] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18314] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18314] close(4)                    = 0
[pid 18314] close(3)                    = 0
[pid 18314] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18314] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18314] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18314] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18314] open("./bus", O_RDONLY)     = 3
[pid 18314] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18314] exit_group(0)               = ?
[pid 18314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18315
./strace-static-x86_64: Process 18315 attached
[pid 18315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18315] setpgid(0, 0)               = 0
[pid 18315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18315] write(3, "1000", 4)         = 4
[pid 18315] close(3)                    = 0
[pid 18315] memfd_create("syzkaller", 0) = 3
[pid 18315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18315] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18315] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18315] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18315] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18315] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18315] close(4)                    = 0
[pid 18315] close(3)                    = 0
[pid 18315] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18315] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18315] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18315] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18315] open("./bus", O_RDONLY)     = 3
[pid 18315] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18315] exit_group(0)               = ?
[pid 18315] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18315, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18316
./strace-static-x86_64: Process 18316 attached
[pid 18316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18316] setpgid(0, 0)               = 0
[pid 18316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18316] write(3, "1000", 4)         = 4
[pid 18316] close(3)                    = 0
[pid 18316] memfd_create("syzkaller", 0) = 3
[pid 18316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18316] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18316] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18316] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18316] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18316] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18316] close(4)                    = 0
[pid 18316] close(3)                    = 0
[pid 18316] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18316] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18316] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18316] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18316] open("./bus", O_RDONLY)     = 3
[pid 18316] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18316] exit_group(0)               = ?
[pid 18316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18316, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18317 attached
, child_tidptr=0x55555606b5d0) = 18317
[pid 18317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18317] setpgid(0, 0)               = 0
[pid 18317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18317] write(3, "1000", 4)         = 4
[pid 18317] close(3)                    = 0
[pid 18317] memfd_create("syzkaller", 0) = 3
[pid 18317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18317] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18317] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18317] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18317] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18317] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18317] close(4)                    = 0
[pid 18317] close(3)                    = 0
[pid 18317] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18317] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18317] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18317] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18317] open("./bus", O_RDONLY)     = 3
[pid 18317] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18317] exit_group(0)               = ?
[pid 18317] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18317, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18318 attached
, child_tidptr=0x55555606b5d0) = 18318
[pid 18318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18318] setpgid(0, 0)               = 0
[pid 18318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18318] write(3, "1000", 4)         = 4
[pid 18318] close(3)                    = 0
[pid 18318] memfd_create("syzkaller", 0) = 3
[pid 18318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18318] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18318] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18318] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18318] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18318] close(4)                    = 0
[pid 18318] close(3)                    = 0
[pid 18318] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18318] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18318] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18318] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18318] open("./bus", O_RDONLY)     = 3
[pid 18318] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18318] exit_group(0)               = ?
[pid 18318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18319 attached
, child_tidptr=0x55555606b5d0) = 18319
[pid 18319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18319] setpgid(0, 0)               = 0
[pid 18319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18319] write(3, "1000", 4)         = 4
[pid 18319] close(3)                    = 0
[pid 18319] memfd_create("syzkaller", 0) = 3
[pid 18319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18319] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18319] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18319] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18319] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18319] close(4)                    = 0
[pid 18319] close(3)                    = 0
[pid 18319] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18319] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18319] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18319] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18319] open("./bus", O_RDONLY)     = 3
[pid 18319] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18319] exit_group(0)               = ?
[pid 18319] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18319, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18320 attached
, child_tidptr=0x55555606b5d0) = 18320
[pid 18320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18320] setpgid(0, 0)               = 0
[pid 18320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18320] write(3, "1000", 4)         = 4
[pid 18320] close(3)                    = 0
[pid 18320] memfd_create("syzkaller", 0) = 3
[pid 18320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18320] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18320] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18320] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18320] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18320] close(4)                    = 0
[pid 18320] close(3)                    = 0
[pid 18320] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18320] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18320] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18320] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18320] open("./bus", O_RDONLY)     = 3
[pid 18320] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18320] exit_group(0)               = ?
[pid 18320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18321 attached
, child_tidptr=0x55555606b5d0) = 18321
[pid 18321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18321] setpgid(0, 0)               = 0
[pid 18321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18321] write(3, "1000", 4)         = 4
[pid 18321] close(3)                    = 0
[pid 18321] memfd_create("syzkaller", 0) = 3
[pid 18321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18321] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18321] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18321] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18321] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18321] close(4)                    = 0
[pid 18321] close(3)                    = 0
[pid 18321] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18321] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18321] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18321] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18321] open("./bus", O_RDONLY)     = 3
[pid 18321] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18321] exit_group(0)               = ?
[pid 18321] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18321, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18322 attached
, child_tidptr=0x55555606b5d0) = 18322
[pid 18322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18322] setpgid(0, 0)               = 0
[pid 18322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18322] write(3, "1000", 4)         = 4
[pid 18322] close(3)                    = 0
[pid 18322] memfd_create("syzkaller", 0) = 3
[pid 18322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18322] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18322] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18322] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18322] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18322] close(4)                    = 0
[pid 18322] close(3)                    = 0
[pid 18322] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18322] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18322] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18322] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18322] open("./bus", O_RDONLY)     = 3
[pid 18322] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18322] exit_group(0)               = ?
[pid 18322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18322, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18323 attached
, child_tidptr=0x55555606b5d0) = 18323
[pid 18323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18323] setpgid(0, 0)               = 0
[pid 18323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18323] write(3, "1000", 4)         = 4
[pid 18323] close(3)                    = 0
[pid 18323] memfd_create("syzkaller", 0) = 3
[pid 18323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18323] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18323] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18323] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18323] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18323] close(4)                    = 0
[pid 18323] close(3)                    = 0
[pid 18323] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18323] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18323] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18323] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18323] open("./bus", O_RDONLY)     = 3
[pid 18323] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18323] exit_group(0)               = ?
[pid 18323] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18323, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18324 attached
, child_tidptr=0x55555606b5d0) = 18324
[pid 18324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18324] setpgid(0, 0)               = 0
[pid 18324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18324] write(3, "1000", 4)         = 4
[pid 18324] close(3)                    = 0
[pid 18324] memfd_create("syzkaller", 0) = 3
[pid 18324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18324] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18324] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18324] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18324] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18324] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18324] close(4)                    = 0
[pid 18324] close(3)                    = 0
[pid 18324] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18324] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18324] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18324] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18324] open("./bus", O_RDONLY)     = 3
[pid 18324] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18324] exit_group(0)               = ?
[pid 18324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18324, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18325
./strace-static-x86_64: Process 18325 attached
[pid 18325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18325] setpgid(0, 0)               = 0
[pid 18325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18325] write(3, "1000", 4)         = 4
[pid 18325] close(3)                    = 0
[pid 18325] memfd_create("syzkaller", 0) = 3
[pid 18325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18325] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18325] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18325] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18325] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18325] close(4)                    = 0
[pid 18325] close(3)                    = 0
[pid 18325] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18325] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18325] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18325] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18325] open("./bus", O_RDONLY)     = 3
[pid 18325] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18325] exit_group(0)               = ?
[pid 18325] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18325, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18326 attached
, child_tidptr=0x55555606b5d0) = 18326
[pid 18326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18326] setpgid(0, 0)               = 0
[pid 18326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18326] write(3, "1000", 4)         = 4
[pid 18326] close(3)                    = 0
[pid 18326] memfd_create("syzkaller", 0) = 3
[pid 18326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18326] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18326] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18326] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18326] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18326] close(4)                    = 0
[pid 18326] close(3)                    = 0
[pid 18326] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18326] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18326] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18326] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18326] open("./bus", O_RDONLY)     = 3
[pid 18326] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18326] exit_group(0)               = ?
[pid 18326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18327 attached
, child_tidptr=0x55555606b5d0) = 18327
[pid 18327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18327] setpgid(0, 0)               = 0
[pid 18327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18327] write(3, "1000", 4)         = 4
[pid 18327] close(3)                    = 0
[pid 18327] memfd_create("syzkaller", 0) = 3
[pid 18327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18327] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18327] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18327] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18327] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18327] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18327] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18327] close(4)                    = 0
[pid 18327] close(3)                    = 0
[pid 18327] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18327] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18327] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18327] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18327] open("./bus", O_RDONLY)     = 3
[pid 18327] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18327] exit_group(0)               = ?
[pid 18327] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18327, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18328
./strace-static-x86_64: Process 18328 attached
[pid 18328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18328] setpgid(0, 0)               = 0
[pid 18328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18328] write(3, "1000", 4)         = 4
[pid 18328] close(3)                    = 0
[pid 18328] memfd_create("syzkaller", 0) = 3
[pid 18328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18328] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18328] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18328] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18328] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18328] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18328] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18328] close(4)                    = 0
[pid 18328] close(3)                    = 0
[pid 18328] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18328] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18328] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18328] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18328] open("./bus", O_RDONLY)     = 3
[pid 18328] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18328] exit_group(0)               = ?
[pid 18328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18329 attached
, child_tidptr=0x55555606b5d0) = 18329
[pid 18329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18329] setpgid(0, 0)               = 0
[pid 18329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18329] write(3, "1000", 4)         = 4
[pid 18329] close(3)                    = 0
[pid 18329] memfd_create("syzkaller", 0) = 3
[pid 18329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18329] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18329] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18329] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18329] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18329] close(4)                    = 0
[pid 18329] close(3)                    = 0
[pid 18329] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18329] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18329] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18329] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18329] open("./bus", O_RDONLY)     = 3
[pid 18329] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18329] exit_group(0)               = ?
[pid 18329] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18329, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18330 attached
, child_tidptr=0x55555606b5d0) = 18330
[pid 18330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18330] setpgid(0, 0)               = 0
[pid 18330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18330] write(3, "1000", 4)         = 4
[pid 18330] close(3)                    = 0
[pid 18330] memfd_create("syzkaller", 0) = 3
[pid 18330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18330] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18330] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18330] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18330] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18330] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18330] close(4)                    = 0
[pid 18330] close(3)                    = 0
[pid 18330] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18330] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18330] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18330] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18330] open("./bus", O_RDONLY)     = 3
[pid 18330] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18330] exit_group(0)               = ?
[pid 18330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18331 attached
 <unfinished ...>
[pid 18331] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18331
[pid 18331] <... prctl resumed>)        = 0
[pid 18331] setpgid(0, 0)               = 0
[pid 18331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18331] write(3, "1000", 4)         = 4
[pid 18331] close(3)                    = 0
[pid 18331] memfd_create("syzkaller", 0) = 3
[pid 18331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18331] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18331] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18331] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18331] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18331] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18331] close(4)                    = 0
[pid 18331] close(3)                    = 0
[pid 18331] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18331] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18331] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18331] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18331] open("./bus", O_RDONLY)     = 3
[pid 18331] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18331] exit_group(0)               = ?
[pid 18331] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18331, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18332 attached
, child_tidptr=0x55555606b5d0) = 18332
[pid 18332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18332] setpgid(0, 0)               = 0
[pid 18332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18332] write(3, "1000", 4)         = 4
[pid 18332] close(3)                    = 0
[pid 18332] memfd_create("syzkaller", 0) = 3
[pid 18332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18332] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18332] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18332] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18332] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18332] close(4)                    = 0
[pid 18332] close(3)                    = 0
[pid 18332] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18332] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18332] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18332] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18332] open("./bus", O_RDONLY)     = 3
[pid 18332] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18332] exit_group(0)               = ?
[pid 18332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18333 attached
, child_tidptr=0x55555606b5d0) = 18333
[pid 18333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18333] setpgid(0, 0)               = 0
[pid 18333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18333] write(3, "1000", 4)         = 4
[pid 18333] close(3)                    = 0
[pid 18333] memfd_create("syzkaller", 0) = 3
[pid 18333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18333] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18333] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18333] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18333] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18333] close(4)                    = 0
[pid 18333] close(3)                    = 0
[pid 18333] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18333] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18333] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18333] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18333] open("./bus", O_RDONLY)     = 3
[pid 18333] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18333] exit_group(0)               = ?
[pid 18333] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18333, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18334
./strace-static-x86_64: Process 18334 attached
[pid 18334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18334] setpgid(0, 0)               = 0
[pid 18334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18334] write(3, "1000", 4)         = 4
[pid 18334] close(3)                    = 0
[pid 18334] memfd_create("syzkaller", 0) = 3
[pid 18334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18334] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18334] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18334] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18334] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18334] close(4)                    = 0
[pid 18334] close(3)                    = 0
[pid 18334] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18334] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18334] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18334] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18334] open("./bus", O_RDONLY)     = 3
[pid 18334] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18334] exit_group(0)               = ?
[pid 18334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18335 attached
, child_tidptr=0x55555606b5d0) = 18335
[pid 18335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18335] setpgid(0, 0)               = 0
[pid 18335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18335] write(3, "1000", 4)         = 4
[pid 18335] close(3)                    = 0
[pid 18335] memfd_create("syzkaller", 0) = 3
[pid 18335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18335] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18335] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18335] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18335] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18335] close(4)                    = 0
[pid 18335] close(3)                    = 0
[pid 18335] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18335] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18335] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18335] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18335] open("./bus", O_RDONLY)     = 3
[pid 18335] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18335] exit_group(0)               = ?
[pid 18335] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18335, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18336 attached
, child_tidptr=0x55555606b5d0) = 18336
[pid 18336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18336] setpgid(0, 0)               = 0
[pid 18336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18336] write(3, "1000", 4)         = 4
[pid 18336] close(3)                    = 0
[pid 18336] memfd_create("syzkaller", 0) = 3
[pid 18336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18336] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18336] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18336] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18336] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18336] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18336] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18336] close(4)                    = 0
[pid 18336] close(3)                    = 0
[pid 18336] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18336] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18336] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18336] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18336] open("./bus", O_RDONLY)     = 3
[pid 18336] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18336] exit_group(0)               = ?
[pid 18336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18337 attached
, child_tidptr=0x55555606b5d0) = 18337
[pid 18337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18337] setpgid(0, 0)               = 0
[pid 18337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18337] write(3, "1000", 4)         = 4
[pid 18337] close(3)                    = 0
[pid 18337] memfd_create("syzkaller", 0) = 3
[pid 18337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18337] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18337] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18337] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18337] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18337] close(4)                    = 0
[pid 18337] close(3)                    = 0
[pid 18337] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18337] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18337] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18337] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18337] open("./bus", O_RDONLY)     = 3
[pid 18337] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18337] exit_group(0)               = ?
[pid 18337] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18337, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18338 attached
, child_tidptr=0x55555606b5d0) = 18338
[pid 18338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18338] setpgid(0, 0)               = 0
[pid 18338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18338] write(3, "1000", 4)         = 4
[pid 18338] close(3)                    = 0
[pid 18338] memfd_create("syzkaller", 0) = 3
[pid 18338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18338] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18338] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18338] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18338] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18338] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18338] close(4)                    = 0
[pid 18338] close(3)                    = 0
[pid 18338] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18338] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18338] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18338] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18338] open("./bus", O_RDONLY)     = 3
[pid 18338] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18338] exit_group(0)               = ?
[pid 18338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18339 attached
, child_tidptr=0x55555606b5d0) = 18339
[pid 18339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18339] setpgid(0, 0)               = 0
[pid 18339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18339] write(3, "1000", 4)         = 4
[pid 18339] close(3)                    = 0
[pid 18339] memfd_create("syzkaller", 0) = 3
[pid 18339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18339] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18339] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18339] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18339] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18339] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18339] close(4)                    = 0
[pid 18339] close(3)                    = 0
[pid 18339] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18339] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18339] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18339] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18339] open("./bus", O_RDONLY)     = 3
[pid 18339] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18339] exit_group(0)               = ?
[pid 18339] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18339, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18340 attached
, child_tidptr=0x55555606b5d0) = 18340
[pid 18340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18340] setpgid(0, 0)               = 0
[pid 18340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18340] write(3, "1000", 4)         = 4
[pid 18340] close(3)                    = 0
[pid 18340] memfd_create("syzkaller", 0) = 3
[pid 18340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18340] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18340] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18340] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18340] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18340] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18340] close(4)                    = 0
[pid 18340] close(3)                    = 0
[pid 18340] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18340] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18340] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18340] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18340] open("./bus", O_RDONLY)     = 3
[pid 18340] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18340] exit_group(0)               = ?
[pid 18340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18340, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18341 attached
, child_tidptr=0x55555606b5d0) = 18341
[pid 18341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18341] setpgid(0, 0)               = 0
[pid 18341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18341] write(3, "1000", 4)         = 4
[pid 18341] close(3)                    = 0
[pid 18341] memfd_create("syzkaller", 0) = 3
[pid 18341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18341] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18341] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18341] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18341] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18341] close(4)                    = 0
[pid 18341] close(3)                    = 0
[pid 18341] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18341] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18341] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18341] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18341] open("./bus", O_RDONLY)     = 3
[pid 18341] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18341] exit_group(0)               = ?
[pid 18341] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18341, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18342
./strace-static-x86_64: Process 18342 attached
[pid 18342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18342] setpgid(0, 0)               = 0
[pid 18342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18342] write(3, "1000", 4)         = 4
[pid 18342] close(3)                    = 0
[pid 18342] memfd_create("syzkaller", 0) = 3
[pid 18342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18342] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18342] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18342] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18342] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18342] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18342] close(4)                    = 0
[pid 18342] close(3)                    = 0
[pid 18342] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18342] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18342] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18342] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18342] open("./bus", O_RDONLY)     = 3
[pid 18342] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18342] exit_group(0)               = ?
[pid 18342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18342, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18343 attached
, child_tidptr=0x55555606b5d0) = 18343
[pid 18343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18343] setpgid(0, 0)               = 0
[pid 18343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18343] write(3, "1000", 4)         = 4
[pid 18343] close(3)                    = 0
[pid 18343] memfd_create("syzkaller", 0) = 3
[pid 18343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18343] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18343] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18343] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18343] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18343] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18343] close(4)                    = 0
[pid 18343] close(3)                    = 0
[pid 18343] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18343] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18343] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18343] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18343] open("./bus", O_RDONLY)     = 3
[pid 18343] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18343] exit_group(0)               = ?
[pid 18343] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18343, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18344 attached
, child_tidptr=0x55555606b5d0) = 18344
[pid 18344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18344] setpgid(0, 0)               = 0
[pid 18344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18344] write(3, "1000", 4)         = 4
[pid 18344] close(3)                    = 0
[pid 18344] memfd_create("syzkaller", 0) = 3
[pid 18344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18344] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18344] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18344] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18344] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18344] close(4)                    = 0
[pid 18344] close(3)                    = 0
[pid 18344] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18344] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18344] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18344] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18344] open("./bus", O_RDONLY)     = 3
[pid 18344] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18344] exit_group(0)               = ?
[pid 18344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18345
./strace-static-x86_64: Process 18345 attached
[pid 18345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18345] setpgid(0, 0)               = 0
[pid 18345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18345] write(3, "1000", 4)         = 4
[pid 18345] close(3)                    = 0
[pid 18345] memfd_create("syzkaller", 0) = 3
[pid 18345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18345] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18345] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18345] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18345] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18345] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18345] close(4)                    = 0
[pid 18345] close(3)                    = 0
[pid 18345] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18345] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18345] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18345] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18345] open("./bus", O_RDONLY)     = 3
[pid 18345] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18345] exit_group(0)               = ?
[pid 18345] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18345, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18346 attached
, child_tidptr=0x55555606b5d0) = 18346
[pid 18346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18346] setpgid(0, 0)               = 0
[pid 18346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18346] write(3, "1000", 4)         = 4
[pid 18346] close(3)                    = 0
[pid 18346] memfd_create("syzkaller", 0) = 3
[pid 18346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18346] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18346] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18346] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18346] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18346] close(4)                    = 0
[pid 18346] close(3)                    = 0
[pid 18346] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18346] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18346] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18346] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18346] open("./bus", O_RDONLY)     = 3
[pid 18346] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18346] exit_group(0)               = ?
[pid 18346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18347
./strace-static-x86_64: Process 18347 attached
[pid 18347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18347] setpgid(0, 0)               = 0
[pid 18347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18347] write(3, "1000", 4)         = 4
[pid 18347] close(3)                    = 0
[pid 18347] memfd_create("syzkaller", 0) = 3
[pid 18347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18347] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18347] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18347] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18347] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18347] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18347] close(4)                    = 0
[pid 18347] close(3)                    = 0
[pid 18347] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18347] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18347] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18347] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18347] open("./bus", O_RDONLY)     = 3
[pid 18347] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18347] exit_group(0)               = ?
[pid 18347] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18347, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18348
./strace-static-x86_64: Process 18348 attached
[pid 18348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18348] setpgid(0, 0)               = 0
[pid 18348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18348] write(3, "1000", 4)         = 4
[pid 18348] close(3)                    = 0
[pid 18348] memfd_create("syzkaller", 0) = 3
[pid 18348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18348] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18348] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18348] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18348] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18348] close(4)                    = 0
[pid 18348] close(3)                    = 0
[pid 18348] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18348] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18348] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18348] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18348] open("./bus", O_RDONLY)     = 3
[pid 18348] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18348] exit_group(0)               = ?
[pid 18348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18349 attached
, child_tidptr=0x55555606b5d0) = 18349
[pid 18349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18349] setpgid(0, 0)               = 0
[pid 18349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18349] write(3, "1000", 4)         = 4
[pid 18349] close(3)                    = 0
[pid 18349] memfd_create("syzkaller", 0) = 3
[pid 18349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18349] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18349] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18349] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18349] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18349] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18349] close(4)                    = 0
[pid 18349] close(3)                    = 0
[pid 18349] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18349] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18349] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18349] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18349] open("./bus", O_RDONLY)     = 3
[pid 18349] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18349] exit_group(0)               = ?
[pid 18349] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18349, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18350
./strace-static-x86_64: Process 18350 attached
[pid 18350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18350] setpgid(0, 0)               = 0
[pid 18350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18350] write(3, "1000", 4)         = 4
[pid 18350] close(3)                    = 0
[pid 18350] memfd_create("syzkaller", 0) = 3
[pid 18350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18350] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18350] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18350] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18350] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18350] close(4)                    = 0
[pid 18350] close(3)                    = 0
[pid 18350] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18350] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18350] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18350] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18350] open("./bus", O_RDONLY)     = 3
[pid 18350] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18350] exit_group(0)               = ?
[pid 18350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18351
./strace-static-x86_64: Process 18351 attached
[pid 18351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18351] setpgid(0, 0)               = 0
[pid 18351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18351] write(3, "1000", 4)         = 4
[pid 18351] close(3)                    = 0
[pid 18351] memfd_create("syzkaller", 0) = 3
[pid 18351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18351] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18351] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18351] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18351] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18351] close(4)                    = 0
[pid 18351] close(3)                    = 0
[pid 18351] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18351] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18351] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18351] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18351] open("./bus", O_RDONLY)     = 3
[pid 18351] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18351] exit_group(0)               = ?
[pid 18351] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18351, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18352
./strace-static-x86_64: Process 18352 attached
[pid 18352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18352] setpgid(0, 0)               = 0
[pid 18352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18352] write(3, "1000", 4)         = 4
[pid 18352] close(3)                    = 0
[pid 18352] memfd_create("syzkaller", 0) = 3
[pid 18352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18352] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18352] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18352] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18352] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18352] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18352] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18352] close(4)                    = 0
[pid 18352] close(3)                    = 0
[pid 18352] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18352] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18352] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18352] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18352] open("./bus", O_RDONLY)     = 3
[pid 18352] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18352] exit_group(0)               = ?
[pid 18352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18353 attached
, child_tidptr=0x55555606b5d0) = 18353
[pid 18353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18353] setpgid(0, 0)               = 0
[pid 18353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18353] write(3, "1000", 4)         = 4
[pid 18353] close(3)                    = 0
[pid 18353] memfd_create("syzkaller", 0) = 3
[pid 18353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18353] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18353] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18353] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18353] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18353] close(4)                    = 0
[pid 18353] close(3)                    = 0
[pid 18353] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18353] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18353] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18353] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18353] open("./bus", O_RDONLY)     = 3
[pid 18353] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18353] exit_group(0)               = ?
[pid 18353] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18353, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18354 attached
, child_tidptr=0x55555606b5d0) = 18354
[pid 18354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18354] setpgid(0, 0)               = 0
[pid 18354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18354] write(3, "1000", 4)         = 4
[pid 18354] close(3)                    = 0
[pid 18354] memfd_create("syzkaller", 0) = 3
[pid 18354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18354] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18354] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18354] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18354] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18354] close(4)                    = 0
[pid 18354] close(3)                    = 0
[pid 18354] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18354] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18354] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18354] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18354] open("./bus", O_RDONLY)     = 3
[pid 18354] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18354] exit_group(0)               = ?
[pid 18354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18355 attached
, child_tidptr=0x55555606b5d0) = 18355
[pid 18355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18355] setpgid(0, 0)               = 0
[pid 18355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18355] write(3, "1000", 4)         = 4
[pid 18355] close(3)                    = 0
[pid 18355] memfd_create("syzkaller", 0) = 3
[pid 18355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18355] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18355] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18355] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18355] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18355] close(4)                    = 0
[pid 18355] close(3)                    = 0
[pid 18355] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18355] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18355] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18355] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18355] open("./bus", O_RDONLY)     = 3
[pid 18355] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18355] exit_group(0)               = ?
[pid 18355] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18355, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18356 attached
, child_tidptr=0x55555606b5d0) = 18356
[pid 18356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18356] setpgid(0, 0)               = 0
[pid 18356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18356] write(3, "1000", 4)         = 4
[pid 18356] close(3)                    = 0
[pid 18356] memfd_create("syzkaller", 0) = 3
[pid 18356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18356] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18356] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18356] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18356] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18356] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18356] close(4)                    = 0
[pid 18356] close(3)                    = 0
[pid 18356] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18356] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18356] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18356] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18356] open("./bus", O_RDONLY)     = 3
[pid 18356] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18356] exit_group(0)               = ?
[pid 18356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18356, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18357
./strace-static-x86_64: Process 18357 attached
[pid 18357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18357] setpgid(0, 0)               = 0
[pid 18357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18357] write(3, "1000", 4)         = 4
[pid 18357] close(3)                    = 0
[pid 18357] memfd_create("syzkaller", 0) = 3
[pid 18357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18357] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18357] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18357] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18357] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18357] close(4)                    = 0
[pid 18357] close(3)                    = 0
[pid 18357] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18357] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18357] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18357] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18357] open("./bus", O_RDONLY)     = 3
[pid 18357] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18357] exit_group(0)               = ?
[pid 18357] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18357, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18358 attached
, child_tidptr=0x55555606b5d0) = 18358
[pid 18358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18358] setpgid(0, 0)               = 0
[pid 18358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18358] write(3, "1000", 4)         = 4
[pid 18358] close(3)                    = 0
[pid 18358] memfd_create("syzkaller", 0) = 3
[pid 18358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18358] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18358] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18358] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18358] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18358] close(4)                    = 0
[pid 18358] close(3)                    = 0
[pid 18358] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18358] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18358] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18358] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18358] open("./bus", O_RDONLY)     = 3
[pid 18358] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18358] exit_group(0)               = ?
[pid 18358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18359
./strace-static-x86_64: Process 18359 attached
[pid 18359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18359] setpgid(0, 0)               = 0
[pid 18359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18359] write(3, "1000", 4)         = 4
[pid 18359] close(3)                    = 0
[pid 18359] memfd_create("syzkaller", 0) = 3
[pid 18359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18359] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18359] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18359] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18359] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18359] close(4)                    = 0
[pid 18359] close(3)                    = 0
[pid 18359] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18359] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18359] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18359] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18359] open("./bus", O_RDONLY)     = 3
[pid 18359] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18359] exit_group(0)               = ?
[pid 18359] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18359, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18360 attached
, child_tidptr=0x55555606b5d0) = 18360
[pid 18360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18360] setpgid(0, 0)               = 0
[pid 18360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18360] write(3, "1000", 4)         = 4
[pid 18360] close(3)                    = 0
[pid 18360] memfd_create("syzkaller", 0) = 3
[pid 18360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18360] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18360] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18360] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18360] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18360] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18360] close(4)                    = 0
[pid 18360] close(3)                    = 0
[pid 18360] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18360] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18360] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18360] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18360] open("./bus", O_RDONLY)     = 3
[pid 18360] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18360] exit_group(0)               = ?
[pid 18360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18361 attached
, child_tidptr=0x55555606b5d0) = 18361
[pid 18361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18361] setpgid(0, 0)               = 0
[pid 18361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18361] write(3, "1000", 4)         = 4
[pid 18361] close(3)                    = 0
[pid 18361] memfd_create("syzkaller", 0) = 3
[pid 18361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18361] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18361] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18361] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18361] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18361] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18361] close(4)                    = 0
[pid 18361] close(3)                    = 0
[pid 18361] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18361] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18361] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18361] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18361] open("./bus", O_RDONLY)     = 3
[pid 18361] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18361] exit_group(0)               = ?
[pid 18361] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18361, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18362
./strace-static-x86_64: Process 18362 attached
[pid 18362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18362] setpgid(0, 0)               = 0
[pid 18362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18362] write(3, "1000", 4)         = 4
[pid 18362] close(3)                    = 0
[pid 18362] memfd_create("syzkaller", 0) = 3
[pid 18362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18362] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18362] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18362] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18362] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18362] close(4)                    = 0
[pid 18362] close(3)                    = 0
[pid 18362] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18362] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18362] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18362] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18362] open("./bus", O_RDONLY)     = 3
[pid 18362] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18362] exit_group(0)               = ?
[pid 18362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18363
./strace-static-x86_64: Process 18363 attached
[pid 18363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18363] setpgid(0, 0)               = 0
[pid 18363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18363] write(3, "1000", 4)         = 4
[pid 18363] close(3)                    = 0
[pid 18363] memfd_create("syzkaller", 0) = 3
[pid 18363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18363] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18363] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18363] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18363] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18363] close(4)                    = 0
[pid 18363] close(3)                    = 0
[pid 18363] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18363] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18363] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18363] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18363] open("./bus", O_RDONLY)     = 3
[pid 18363] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18363] exit_group(0)               = ?
[pid 18363] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18363, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18364 attached
, child_tidptr=0x55555606b5d0) = 18364
[pid 18364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18364] setpgid(0, 0)               = 0
[pid 18364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18364] write(3, "1000", 4)         = 4
[pid 18364] close(3)                    = 0
[pid 18364] memfd_create("syzkaller", 0) = 3
[pid 18364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18364] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18364] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18364] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18364] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18364] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18364] close(4)                    = 0
[pid 18364] close(3)                    = 0
[pid 18364] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18364] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18364] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18364] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18364] open("./bus", O_RDONLY)     = 3
[pid 18364] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18364] exit_group(0)               = ?
[pid 18364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18364, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18365 attached
, child_tidptr=0x55555606b5d0) = 18365
[pid 18365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18365] setpgid(0, 0)               = 0
[pid 18365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18365] write(3, "1000", 4)         = 4
[pid 18365] close(3)                    = 0
[pid 18365] memfd_create("syzkaller", 0) = 3
[pid 18365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18365] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18365] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18365] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18365] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18365] close(4)                    = 0
[pid 18365] close(3)                    = 0
[pid 18365] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18365] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18365] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18365] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18365] open("./bus", O_RDONLY)     = 3
[pid 18365] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18365] exit_group(0)               = ?
[pid 18365] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18365, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18366
./strace-static-x86_64: Process 18366 attached
[pid 18366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18366] setpgid(0, 0)               = 0
[pid 18366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18366] write(3, "1000", 4)         = 4
[pid 18366] close(3)                    = 0
[pid 18366] memfd_create("syzkaller", 0) = 3
[pid 18366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18366] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18366] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18366] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18366] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18366] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18366] close(4)                    = 0
[pid 18366] close(3)                    = 0
[pid 18366] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18366] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18366] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18366] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18366] open("./bus", O_RDONLY)     = 3
[pid 18366] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18366] exit_group(0)               = ?
[pid 18366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18367
./strace-static-x86_64: Process 18367 attached
[pid 18367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18367] setpgid(0, 0)               = 0
[pid 18367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18367] write(3, "1000", 4)         = 4
[pid 18367] close(3)                    = 0
[pid 18367] memfd_create("syzkaller", 0) = 3
[pid 18367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18367] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18367] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18367] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18367] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18367] close(4)                    = 0
[pid 18367] close(3)                    = 0
[pid 18367] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18367] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18367] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18367] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18367] open("./bus", O_RDONLY)     = 3
[pid 18367] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18367] exit_group(0)               = ?
[pid 18367] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18367, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18368
./strace-static-x86_64: Process 18368 attached
[pid 18368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18368] setpgid(0, 0)               = 0
[pid 18368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18368] write(3, "1000", 4)         = 4
[pid 18368] close(3)                    = 0
[pid 18368] memfd_create("syzkaller", 0) = 3
[pid 18368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18368] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18368] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18368] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18368] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18368] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18368] close(4)                    = 0
[pid 18368] close(3)                    = 0
[pid 18368] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18368] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18368] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18368] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18368] open("./bus", O_RDONLY)     = 3
[pid 18368] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18368] exit_group(0)               = ?
[pid 18368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18369
./strace-static-x86_64: Process 18369 attached
[pid 18369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18369] setpgid(0, 0)               = 0
[pid 18369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18369] write(3, "1000", 4)         = 4
[pid 18369] close(3)                    = 0
[pid 18369] memfd_create("syzkaller", 0) = 3
[pid 18369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18369] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18369] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18369] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18369] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18369] close(4)                    = 0
[pid 18369] close(3)                    = 0
[pid 18369] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18369] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18369] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18369] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18369] open("./bus", O_RDONLY)     = 3
[pid 18369] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18369] exit_group(0)               = ?
[pid 18369] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18369, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18370
./strace-static-x86_64: Process 18370 attached
[pid 18370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18370] setpgid(0, 0)               = 0
[pid 18370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18370] write(3, "1000", 4)         = 4
[pid 18370] close(3)                    = 0
[pid 18370] memfd_create("syzkaller", 0) = 3
[pid 18370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18370] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18370] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18370] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18370] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18370] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18370] close(4)                    = 0
[pid 18370] close(3)                    = 0
[pid 18370] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18370] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18370] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18370] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18370] open("./bus", O_RDONLY)     = 3
[pid 18370] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18370] exit_group(0)               = ?
[pid 18370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18371 attached
 <unfinished ...>
[pid 18371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18371] setpgid(0, 0 <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18371
[pid 18371] <... setpgid resumed>)      = 0
[pid 18371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18371] write(3, "1000", 4)         = 4
[pid 18371] close(3)                    = 0
[pid 18371] memfd_create("syzkaller", 0) = 3
[pid 18371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18371] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18371] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18371] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18371] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18371] close(4)                    = 0
[pid 18371] close(3)                    = 0
[pid 18371] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18371] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18371] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18371] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18371] open("./bus", O_RDONLY)     = 3
[pid 18371] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18371] exit_group(0)               = ?
[pid 18371] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18371, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18372
./strace-static-x86_64: Process 18372 attached
[pid 18372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18372] setpgid(0, 0)               = 0
[pid 18372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18372] write(3, "1000", 4)         = 4
[pid 18372] close(3)                    = 0
[pid 18372] memfd_create("syzkaller", 0) = 3
[pid 18372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18372] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18372] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18372] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18372] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18372] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18372] close(4)                    = 0
[pid 18372] close(3)                    = 0
[pid 18372] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18372] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18372] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18372] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18372] open("./bus", O_RDONLY)     = 3
[pid 18372] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18372] exit_group(0)               = ?
[pid 18372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18373 attached
, child_tidptr=0x55555606b5d0) = 18373
[pid 18373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18373] setpgid(0, 0)               = 0
[pid 18373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18373] write(3, "1000", 4)         = 4
[pid 18373] close(3)                    = 0
[pid 18373] memfd_create("syzkaller", 0) = 3
[pid 18373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18373] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18373] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18373] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18373] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18373] close(4)                    = 0
[pid 18373] close(3)                    = 0
[pid 18373] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18373] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18373] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18373] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18373] open("./bus", O_RDONLY)     = 3
[pid 18373] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18373] exit_group(0)               = ?
[pid 18373] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18373, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18374 attached
, child_tidptr=0x55555606b5d0) = 18374
[pid 18374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18374] setpgid(0, 0)               = 0
[pid 18374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18374] write(3, "1000", 4)         = 4
[pid 18374] close(3)                    = 0
[pid 18374] memfd_create("syzkaller", 0) = 3
[pid 18374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18374] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18374] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18374] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18374] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18374] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18374] close(4)                    = 0
[pid 18374] close(3)                    = 0
[pid 18374] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18374] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18374] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18374] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18374] open("./bus", O_RDONLY)     = 3
[pid 18374] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18374] exit_group(0)               = ?
[pid 18374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18375
./strace-static-x86_64: Process 18375 attached
[pid 18375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18375] setpgid(0, 0)               = 0
[pid 18375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18375] write(3, "1000", 4)         = 4
[pid 18375] close(3)                    = 0
[pid 18375] memfd_create("syzkaller", 0) = 3
[pid 18375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18375] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18375] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18375] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18375] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18375] close(4)                    = 0
[pid 18375] close(3)                    = 0
[pid 18375] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18375] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18375] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18375] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18375] open("./bus", O_RDONLY)     = 3
[pid 18375] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18375] exit_group(0)               = ?
[pid 18375] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18375, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18376
./strace-static-x86_64: Process 18376 attached
[pid 18376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18376] setpgid(0, 0)               = 0
[pid 18376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18376] write(3, "1000", 4)         = 4
[pid 18376] close(3)                    = 0
[pid 18376] memfd_create("syzkaller", 0) = 3
[pid 18376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18376] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18376] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18376] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18376] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18376] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18376] close(4)                    = 0
[pid 18376] close(3)                    = 0
[pid 18376] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18376] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18376] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18376] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18376] open("./bus", O_RDONLY)     = 3
[pid 18376] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18376] exit_group(0)               = ?
[pid 18376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18376, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18377
./strace-static-x86_64: Process 18377 attached
[pid 18377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18377] setpgid(0, 0)               = 0
[pid 18377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18377] write(3, "1000", 4)         = 4
[pid 18377] close(3)                    = 0
[pid 18377] memfd_create("syzkaller", 0) = 3
[pid 18377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18377] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18377] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18377] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18377] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18377] close(4)                    = 0
[pid 18377] close(3)                    = 0
[pid 18377] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18377] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18377] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18377] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18377] open("./bus", O_RDONLY)     = 3
[pid 18377] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18377] exit_group(0)               = ?
[pid 18377] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18377, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18378 attached
 <unfinished ...>
[pid 18378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18378] setpgid(0, 0)               = 0
[pid 18378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18378
[pid 18378] <... openat resumed>)       = 3
[pid 18378] write(3, "1000", 4)         = 4
[pid 18378] close(3)                    = 0
[pid 18378] memfd_create("syzkaller", 0) = 3
[pid 18378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18378] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18378] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18378] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18378] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18378] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18378] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18378] close(4)                    = 0
[pid 18378] close(3)                    = 0
[pid 18378] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18378] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18378] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18378] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18378] open("./bus", O_RDONLY)     = 3
[pid 18378] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18378] exit_group(0)               = ?
[pid 18378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18379
./strace-static-x86_64: Process 18379 attached
[pid 18379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18379] setpgid(0, 0)               = 0
[pid 18379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18379] write(3, "1000", 4)         = 4
[pid 18379] close(3)                    = 0
[pid 18379] memfd_create("syzkaller", 0) = 3
[pid 18379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18379] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18379] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18379] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18379] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18379] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18379] close(4)                    = 0
[pid 18379] close(3)                    = 0
[pid 18379] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18379] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18379] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18379] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18379] open("./bus", O_RDONLY)     = 3
[pid 18379] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18379] exit_group(0)               = ?
[pid 18379] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18379, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18380
./strace-static-x86_64: Process 18380 attached
[pid 18380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18380] setpgid(0, 0)               = 0
[pid 18380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18380] write(3, "1000", 4)         = 4
[pid 18380] close(3)                    = 0
[pid 18380] memfd_create("syzkaller", 0) = 3
[pid 18380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18380] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18380] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18380] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18380] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18380] close(4)                    = 0
[pid 18380] close(3)                    = 0
[pid 18380] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18380] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18380] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18380] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18380] open("./bus", O_RDONLY)     = 3
[pid 18380] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18380] exit_group(0)               = ?
[pid 18380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18381
./strace-static-x86_64: Process 18381 attached
[pid 18381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18381] setpgid(0, 0)               = 0
[pid 18381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18381] write(3, "1000", 4)         = 4
[pid 18381] close(3)                    = 0
[pid 18381] memfd_create("syzkaller", 0) = 3
[pid 18381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18381] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18381] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18381] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18381] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18381] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18381] close(4)                    = 0
[pid 18381] close(3)                    = 0
[pid 18381] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18381] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18381] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18381] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18381] open("./bus", O_RDONLY)     = 3
[pid 18381] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18381] exit_group(0)               = ?
[pid 18381] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18381, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18382
./strace-static-x86_64: Process 18382 attached
[pid 18382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18382] setpgid(0, 0)               = 0
[pid 18382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18382] write(3, "1000", 4)         = 4
[pid 18382] close(3)                    = 0
[pid 18382] memfd_create("syzkaller", 0) = 3
[pid 18382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18382] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18382] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18382] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18382] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18382] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18382] close(4)                    = 0
[pid 18382] close(3)                    = 0
[pid 18382] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18382] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18382] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18382] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18382] open("./bus", O_RDONLY)     = 3
[pid 18382] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18382] exit_group(0)               = ?
[pid 18382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18383 attached
, child_tidptr=0x55555606b5d0) = 18383
[pid 18383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18383] setpgid(0, 0)               = 0
[pid 18383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18383] write(3, "1000", 4)         = 4
[pid 18383] close(3)                    = 0
[pid 18383] memfd_create("syzkaller", 0) = 3
[pid 18383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18383] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18383] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18383] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18383] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18383] close(4)                    = 0
[pid 18383] close(3)                    = 0
[pid 18383] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18383] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18383] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18383] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18383] open("./bus", O_RDONLY)     = 3
[pid 18383] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18383] exit_group(0)               = ?
[pid 18383] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18383, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18384 attached
, child_tidptr=0x55555606b5d0) = 18384
[pid 18384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18384] setpgid(0, 0)               = 0
[pid 18384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18384] write(3, "1000", 4)         = 4
[pid 18384] close(3)                    = 0
[pid 18384] memfd_create("syzkaller", 0) = 3
[pid 18384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18384] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18384] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18384] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18384] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18384] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18384] close(4)                    = 0
[pid 18384] close(3)                    = 0
[pid 18384] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18384] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18384] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18384] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18384] open("./bus", O_RDONLY)     = 3
[pid 18384] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18384] exit_group(0)               = ?
[pid 18384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18384, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18385 attached
 <unfinished ...>
[pid 18385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18385] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18385
[pid 18385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18385] write(3, "1000", 4)         = 4
[pid 18385] close(3)                    = 0
[pid 18385] memfd_create("syzkaller", 0) = 3
[pid 18385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18385] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18385] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18385] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18385] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18385] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18385] close(4)                    = 0
[pid 18385] close(3)                    = 0
[pid 18385] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18385] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18385] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18385] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18385] open("./bus", O_RDONLY)     = 3
[pid 18385] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18385] exit_group(0)               = ?
[pid 18385] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18385, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18386 attached
, child_tidptr=0x55555606b5d0) = 18386
[pid 18386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18386] setpgid(0, 0)               = 0
[pid 18386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18386] write(3, "1000", 4)         = 4
[pid 18386] close(3)                    = 0
[pid 18386] memfd_create("syzkaller", 0) = 3
[pid 18386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18386] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18386] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18386] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18386] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18386] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18386] close(4)                    = 0
[pid 18386] close(3)                    = 0
[pid 18386] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18386] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18386] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18386] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18386] open("./bus", O_RDONLY)     = 3
[pid 18386] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18386] exit_group(0)               = ?
[pid 18386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18387 attached
, child_tidptr=0x55555606b5d0) = 18387
[pid 18387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18387] setpgid(0, 0)               = 0
[pid 18387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18387] write(3, "1000", 4)         = 4
[pid 18387] close(3)                    = 0
[pid 18387] memfd_create("syzkaller", 0) = 3
[pid 18387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18387] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18387] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18387] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18387] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18387] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18387] close(4)                    = 0
[pid 18387] close(3)                    = 0
[pid 18387] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18387] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18387] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18387] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18387] open("./bus", O_RDONLY)     = 3
[pid 18387] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18387] exit_group(0)               = ?
[pid 18387] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18387, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18388 attached
, child_tidptr=0x55555606b5d0) = 18388
[pid 18388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18388] setpgid(0, 0)               = 0
[pid 18388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18388] write(3, "1000", 4)         = 4
[pid 18388] close(3)                    = 0
[pid 18388] memfd_create("syzkaller", 0) = 3
[pid 18388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18388] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18388] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18388] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18388] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18388] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18388] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18388] close(4)                    = 0
[pid 18388] close(3)                    = 0
[pid 18388] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18388] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18388] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18388] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18388] open("./bus", O_RDONLY)     = 3
[pid 18388] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18388] exit_group(0)               = ?
[pid 18388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18389
./strace-static-x86_64: Process 18389 attached
[pid 18389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18389] setpgid(0, 0)               = 0
[pid 18389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18389] write(3, "1000", 4)         = 4
[pid 18389] close(3)                    = 0
[pid 18389] memfd_create("syzkaller", 0) = 3
[pid 18389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18389] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18389] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18389] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18389] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18389] close(4)                    = 0
[pid 18389] close(3)                    = 0
[pid 18389] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18389] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18389] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18389] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18389] open("./bus", O_RDONLY)     = 3
[pid 18389] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18389] exit_group(0)               = ?
[pid 18389] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18389, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18390
./strace-static-x86_64: Process 18390 attached
[pid 18390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18390] setpgid(0, 0)               = 0
[pid 18390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18390] write(3, "1000", 4)         = 4
[pid 18390] close(3)                    = 0
[pid 18390] memfd_create("syzkaller", 0) = 3
[pid 18390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18390] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18390] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18390] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18390] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18390] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18390] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18390] close(4)                    = 0
[pid 18390] close(3)                    = 0
[pid 18390] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18390] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18390] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18390] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18390] open("./bus", O_RDONLY)     = 3
[pid 18390] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18390] exit_group(0)               = ?
[pid 18390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18391 attached
, child_tidptr=0x55555606b5d0) = 18391
[pid 18391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18391] setpgid(0, 0)               = 0
[pid 18391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18391] write(3, "1000", 4)         = 4
[pid 18391] close(3)                    = 0
[pid 18391] memfd_create("syzkaller", 0) = 3
[pid 18391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18391] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18391] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18391] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18391] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18391] close(4)                    = 0
[pid 18391] close(3)                    = 0
[pid 18391] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18391] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18391] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18391] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18391] open("./bus", O_RDONLY)     = 3
[pid 18391] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18391] exit_group(0)               = ?
[pid 18391] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18391, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18392
./strace-static-x86_64: Process 18392 attached
[pid 18392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18392] setpgid(0, 0)               = 0
[pid 18392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18392] write(3, "1000", 4)         = 4
[pid 18392] close(3)                    = 0
[pid 18392] memfd_create("syzkaller", 0) = 3
[pid 18392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18392] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18392] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18392] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18392] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18392] close(4)                    = 0
[pid 18392] close(3)                    = 0
[pid 18392] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18392] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18392] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18392] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18392] open("./bus", O_RDONLY)     = 3
[pid 18392] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18392] exit_group(0)               = ?
[pid 18392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18392, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18393 attached
 <unfinished ...>
[pid 18393] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18393
[pid 18393] <... prctl resumed>)        = 0
[pid 18393] setpgid(0, 0)               = 0
[pid 18393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18393] write(3, "1000", 4)         = 4
[pid 18393] close(3)                    = 0
[pid 18393] memfd_create("syzkaller", 0) = 3
[pid 18393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18393] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18393] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18393] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18393] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18393] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18393] close(4)                    = 0
[pid 18393] close(3)                    = 0
[pid 18393] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18393] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18393] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18393] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18393] open("./bus", O_RDONLY)     = 3
[pid 18393] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18393] exit_group(0)               = ?
[pid 18393] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18393, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18394
./strace-static-x86_64: Process 18394 attached
[pid 18394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18394] setpgid(0, 0)               = 0
[pid 18394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18394] write(3, "1000", 4)         = 4
[pid 18394] close(3)                    = 0
[pid 18394] memfd_create("syzkaller", 0) = 3
[pid 18394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18394] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18394] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18394] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18394] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18394] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18394] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18394] close(4)                    = 0
[pid 18394] close(3)                    = 0
[pid 18394] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18394] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18394] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18394] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18394] open("./bus", O_RDONLY)     = 3
[pid 18394] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18394] exit_group(0)               = ?
[pid 18394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18395
./strace-static-x86_64: Process 18395 attached
[pid 18395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18395] setpgid(0, 0)               = 0
[pid 18395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18395] write(3, "1000", 4)         = 4
[pid 18395] close(3)                    = 0
[pid 18395] memfd_create("syzkaller", 0) = 3
[pid 18395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18395] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18395] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18395] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18395] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18395] close(4)                    = 0
[pid 18395] close(3)                    = 0
[pid 18395] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18395] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18395] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18395] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18395] open("./bus", O_RDONLY)     = 3
[pid 18395] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18395] exit_group(0)               = ?
[pid 18395] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18395, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18396
./strace-static-x86_64: Process 18396 attached
[pid 18396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18396] setpgid(0, 0)               = 0
[pid 18396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18396] write(3, "1000", 4)         = 4
[pid 18396] close(3)                    = 0
[pid 18396] memfd_create("syzkaller", 0) = 3
[pid 18396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18396] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18396] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18396] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18396] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18396] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18396] close(4)                    = 0
[pid 18396] close(3)                    = 0
[pid 18396] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18396] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18396] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18396] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18396] open("./bus", O_RDONLY)     = 3
[pid 18396] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18396] exit_group(0)               = ?
[pid 18396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18397 attached
, child_tidptr=0x55555606b5d0) = 18397
[pid 18397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18397] setpgid(0, 0)               = 0
[pid 18397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18397] write(3, "1000", 4)         = 4
[pid 18397] close(3)                    = 0
[pid 18397] memfd_create("syzkaller", 0) = 3
[pid 18397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18397] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18397] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18397] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18397] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18397] close(4)                    = 0
[pid 18397] close(3)                    = 0
[pid 18397] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18397] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18397] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18397] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18397] open("./bus", O_RDONLY)     = 3
[pid 18397] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18397] exit_group(0)               = ?
[pid 18397] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18397, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18398 attached
, child_tidptr=0x55555606b5d0) = 18398
[pid 18398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18398] setpgid(0, 0)               = 0
[pid 18398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18398] write(3, "1000", 4)         = 4
[pid 18398] close(3)                    = 0
[pid 18398] memfd_create("syzkaller", 0) = 3
[pid 18398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18398] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18398] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18398] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18398] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18398] close(4)                    = 0
[pid 18398] close(3)                    = 0
[pid 18398] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18398] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18398] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18398] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18398] open("./bus", O_RDONLY)     = 3
[pid 18398] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18398] exit_group(0)               = ?
[pid 18398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18399
./strace-static-x86_64: Process 18399 attached
[pid 18399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18399] setpgid(0, 0)               = 0
[pid 18399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18399] write(3, "1000", 4)         = 4
[pid 18399] close(3)                    = 0
[pid 18399] memfd_create("syzkaller", 0) = 3
[pid 18399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18399] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18399] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18399] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18399] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18399] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18399] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18399] close(4)                    = 0
[pid 18399] close(3)                    = 0
[pid 18399] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18399] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18399] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18399] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18399] open("./bus", O_RDONLY)     = 3
[pid 18399] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18399] exit_group(0)               = ?
[pid 18399] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18399, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18400 attached
, child_tidptr=0x55555606b5d0) = 18400
[pid 18400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18400] setpgid(0, 0)               = 0
[pid 18400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18400] write(3, "1000", 4)         = 4
[pid 18400] close(3)                    = 0
[pid 18400] memfd_create("syzkaller", 0) = 3
[pid 18400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18400] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18400] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18400] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18400] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18400] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18400] close(4)                    = 0
[pid 18400] close(3)                    = 0
[pid 18400] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18400] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18400] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18400] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18400] open("./bus", O_RDONLY)     = 3
[pid 18400] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18400] exit_group(0)               = ?
[pid 18400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18400, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18401 attached
, child_tidptr=0x55555606b5d0) = 18401
[pid 18401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18401] setpgid(0, 0)               = 0
[pid 18401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18401] write(3, "1000", 4)         = 4
[pid 18401] close(3)                    = 0
[pid 18401] memfd_create("syzkaller", 0) = 3
[pid 18401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18401] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18401] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18401] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18401] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18401] close(4)                    = 0
[pid 18401] close(3)                    = 0
[pid 18401] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18401] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18401] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18401] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18401] open("./bus", O_RDONLY)     = 3
[pid 18401] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18401] exit_group(0)               = ?
[pid 18401] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18401, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18402
./strace-static-x86_64: Process 18402 attached
[pid 18402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18402] setpgid(0, 0)               = 0
[pid 18402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18402] write(3, "1000", 4)         = 4
[pid 18402] close(3)                    = 0
[pid 18402] memfd_create("syzkaller", 0) = 3
[pid 18402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18402] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18402] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18402] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18402] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18402] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18402] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18402] close(4)                    = 0
[pid 18402] close(3)                    = 0
[pid 18402] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18402] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18402] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18402] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18402] open("./bus", O_RDONLY)     = 3
[pid 18402] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18402] exit_group(0)               = ?
[pid 18402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18403 attached
, child_tidptr=0x55555606b5d0) = 18403
[pid 18403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18403] setpgid(0, 0)               = 0
[pid 18403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18403] write(3, "1000", 4)         = 4
[pid 18403] close(3)                    = 0
[pid 18403] memfd_create("syzkaller", 0) = 3
[pid 18403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18403] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18403] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18403] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18403] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18403] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18403] close(4)                    = 0
[pid 18403] close(3)                    = 0
[pid 18403] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18403] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18403] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18403] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18403] open("./bus", O_RDONLY)     = 3
[pid 18403] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18403] exit_group(0)               = ?
[pid 18403] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18403, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18404
./strace-static-x86_64: Process 18404 attached
[pid 18404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18404] setpgid(0, 0)               = 0
[pid 18404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18404] write(3, "1000", 4)         = 4
[pid 18404] close(3)                    = 0
[pid 18404] memfd_create("syzkaller", 0) = 3
[pid 18404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18404] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18404] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18404] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18404] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18404] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18404] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18404] close(4)                    = 0
[pid 18404] close(3)                    = 0
[pid 18404] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18404] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18404] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18404] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18404] open("./bus", O_RDONLY)     = 3
[pid 18404] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18404] exit_group(0)               = ?
[pid 18404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18404, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18405 attached
, child_tidptr=0x55555606b5d0) = 18405
[pid 18405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18405] setpgid(0, 0)               = 0
[pid 18405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18405] write(3, "1000", 4)         = 4
[pid 18405] close(3)                    = 0
[pid 18405] memfd_create("syzkaller", 0) = 3
[pid 18405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18405] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18405] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18405] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18405] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18405] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18405] close(4)                    = 0
[pid 18405] close(3)                    = 0
[pid 18405] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18405] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18405] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18405] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18405] open("./bus", O_RDONLY)     = 3
[pid 18405] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18405] exit_group(0)               = ?
[pid 18405] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18405, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18406
./strace-static-x86_64: Process 18406 attached
[pid 18406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18406] setpgid(0, 0)               = 0
[pid 18406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18406] write(3, "1000", 4)         = 4
[pid 18406] close(3)                    = 0
[pid 18406] memfd_create("syzkaller", 0) = 3
[pid 18406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18406] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18406] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18406] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18406] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18406] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18406] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18406] close(4)                    = 0
[pid 18406] close(3)                    = 0
[pid 18406] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18406] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18406] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18406] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18406] open("./bus", O_RDONLY)     = 3
[pid 18406] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18406] exit_group(0)               = ?
[pid 18406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18407
./strace-static-x86_64: Process 18407 attached
[pid 18407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18407] setpgid(0, 0)               = 0
[pid 18407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18407] write(3, "1000", 4)         = 4
[pid 18407] close(3)                    = 0
[pid 18407] memfd_create("syzkaller", 0) = 3
[pid 18407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18407] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18407] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18407] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18407] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18407] close(4)                    = 0
[pid 18407] close(3)                    = 0
[pid 18407] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18407] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18407] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18407] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18407] open("./bus", O_RDONLY)     = 3
[pid 18407] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18407] exit_group(0)               = ?
[pid 18407] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18407, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18408
./strace-static-x86_64: Process 18408 attached
[pid 18408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18408] setpgid(0, 0)               = 0
[pid 18408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18408] write(3, "1000", 4)         = 4
[pid 18408] close(3)                    = 0
[pid 18408] memfd_create("syzkaller", 0) = 3
[pid 18408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18408] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18408] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18408] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18408] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18408] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18408] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18408] close(4)                    = 0
[pid 18408] close(3)                    = 0
[pid 18408] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18408] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18408] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18408] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18408] open("./bus", O_RDONLY)     = 3
[pid 18408] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18408] exit_group(0)               = ?
[pid 18408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18409
./strace-static-x86_64: Process 18409 attached
[pid 18409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18409] setpgid(0, 0)               = 0
[pid 18409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18409] write(3, "1000", 4)         = 4
[pid 18409] close(3)                    = 0
[pid 18409] memfd_create("syzkaller", 0) = 3
[pid 18409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18409] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18409] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18409] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18409] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18409] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18409] close(4)                    = 0
[pid 18409] close(3)                    = 0
[pid 18409] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18409] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18409] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18409] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18409] open("./bus", O_RDONLY)     = 3
[pid 18409] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18409] exit_group(0)               = ?
[pid 18409] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18409, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18410
./strace-static-x86_64: Process 18410 attached
[pid 18410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18410] setpgid(0, 0)               = 0
[pid 18410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18410] write(3, "1000", 4)         = 4
[pid 18410] close(3)                    = 0
[pid 18410] memfd_create("syzkaller", 0) = 3
[pid 18410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18410] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18410] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18410] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18410] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18410] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18410] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18410] close(4)                    = 0
[pid 18410] close(3)                    = 0
[pid 18410] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18410] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18410] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18410] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18410] open("./bus", O_RDONLY)     = 3
[pid 18410] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18410] exit_group(0)               = ?
[pid 18410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18411
./strace-static-x86_64: Process 18411 attached
[pid 18411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18411] setpgid(0, 0)               = 0
[pid 18411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18411] write(3, "1000", 4)         = 4
[pid 18411] close(3)                    = 0
[pid 18411] memfd_create("syzkaller", 0) = 3
[pid 18411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18411] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18411] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18411] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18411] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18411] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18411] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18411] close(4)                    = 0
[pid 18411] close(3)                    = 0
[pid 18411] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18411] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18411] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18411] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18411] open("./bus", O_RDONLY)     = 3
[pid 18411] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18411] exit_group(0)               = ?
[pid 18411] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18411, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18412 attached
, child_tidptr=0x55555606b5d0) = 18412
[pid 18412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18412] setpgid(0, 0)               = 0
[pid 18412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18412] write(3, "1000", 4)         = 4
[pid 18412] close(3)                    = 0
[pid 18412] memfd_create("syzkaller", 0) = 3
[pid 18412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18412] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18412] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18412] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18412] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18412] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18412] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18412] close(4)                    = 0
[pid 18412] close(3)                    = 0
[pid 18412] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18412] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18412] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18412] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18412] open("./bus", O_RDONLY)     = 3
[pid 18412] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18412] exit_group(0)               = ?
[pid 18412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18413 attached
, child_tidptr=0x55555606b5d0) = 18413
[pid 18413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18413] setpgid(0, 0)               = 0
[pid 18413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18413] write(3, "1000", 4)         = 4
[pid 18413] close(3)                    = 0
[pid 18413] memfd_create("syzkaller", 0) = 3
[pid 18413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18413] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18413] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18413] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18413] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18413] close(4)                    = 0
[pid 18413] close(3)                    = 0
[pid 18413] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18413] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18413] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18413] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18413] open("./bus", O_RDONLY)     = 3
[pid 18413] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18413] exit_group(0)               = ?
[pid 18413] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18413, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18414
./strace-static-x86_64: Process 18414 attached
[pid 18414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18414] setpgid(0, 0)               = 0
[pid 18414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18414] write(3, "1000", 4)         = 4
[pid 18414] close(3)                    = 0
[pid 18414] memfd_create("syzkaller", 0) = 3
[pid 18414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18414] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18414] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18414] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18414] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18414] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18414] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18414] close(4)                    = 0
[pid 18414] close(3)                    = 0
[pid 18414] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18414] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18414] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18414] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18414] open("./bus", O_RDONLY)     = 3
[pid 18414] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18414] exit_group(0)               = ?
[pid 18414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18415
./strace-static-x86_64: Process 18415 attached
[pid 18415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18415] setpgid(0, 0)               = 0
[pid 18415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18415] write(3, "1000", 4)         = 4
[pid 18415] close(3)                    = 0
[pid 18415] memfd_create("syzkaller", 0) = 3
[pid 18415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18415] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18415] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18415] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18415] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18415] close(4)                    = 0
[pid 18415] close(3)                    = 0
[pid 18415] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18415] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18415] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18415] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18415] open("./bus", O_RDONLY)     = 3
[pid 18415] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18415] exit_group(0)               = ?
[pid 18415] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18415, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18416 attached
, child_tidptr=0x55555606b5d0) = 18416
[pid 18416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18416] setpgid(0, 0)               = 0
[pid 18416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18416] write(3, "1000", 4)         = 4
[pid 18416] close(3)                    = 0
[pid 18416] memfd_create("syzkaller", 0) = 3
[pid 18416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18416] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18416] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18416] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18416] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18416] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18416] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18416] close(4)                    = 0
[pid 18416] close(3)                    = 0
[pid 18416] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18416] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18416] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18416] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18416] open("./bus", O_RDONLY)     = 3
[pid 18416] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18416] exit_group(0)               = ?
[pid 18416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18417
./strace-static-x86_64: Process 18417 attached
[pid 18417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18417] setpgid(0, 0)               = 0
[pid 18417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18417] write(3, "1000", 4)         = 4
[pid 18417] close(3)                    = 0
[pid 18417] memfd_create("syzkaller", 0) = 3
[pid 18417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18417] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18417] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18417] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18417] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18417] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18417] close(4)                    = 0
[pid 18417] close(3)                    = 0
[pid 18417] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18417] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18417] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18417] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18417] open("./bus", O_RDONLY)     = 3
[pid 18417] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18417] exit_group(0)               = ?
[pid 18417] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18417, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18418 attached
, child_tidptr=0x55555606b5d0) = 18418
[pid 18418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18418] setpgid(0, 0)               = 0
[pid 18418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18418] write(3, "1000", 4)         = 4
[pid 18418] close(3)                    = 0
[pid 18418] memfd_create("syzkaller", 0) = 3
[pid 18418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18418] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18418] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18418] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18418] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18418] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18418] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18418] close(4)                    = 0
[pid 18418] close(3)                    = 0
[pid 18418] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18418] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18418] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18418] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18418] open("./bus", O_RDONLY)     = 3
[pid 18418] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18418] exit_group(0)               = ?
[pid 18418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18419 attached
, child_tidptr=0x55555606b5d0) = 18419
[pid 18419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18419] setpgid(0, 0)               = 0
[pid 18419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18419] write(3, "1000", 4)         = 4
[pid 18419] close(3)                    = 0
[pid 18419] memfd_create("syzkaller", 0) = 3
[pid 18419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18419] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18419] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18419] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18419] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18419] close(4)                    = 0
[pid 18419] close(3)                    = 0
[pid 18419] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18419] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18419] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18419] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18419] open("./bus", O_RDONLY)     = 3
[pid 18419] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18419] exit_group(0)               = ?
[pid 18419] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18419, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18420 attached
, child_tidptr=0x55555606b5d0) = 18420
[pid 18420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18420] setpgid(0, 0)               = 0
[pid 18420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18420] write(3, "1000", 4)         = 4
[pid 18420] close(3)                    = 0
[pid 18420] memfd_create("syzkaller", 0) = 3
[pid 18420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18420] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18420] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18420] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18420] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18420] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18420] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18420] close(4)                    = 0
[pid 18420] close(3)                    = 0
[pid 18420] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18420] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18420] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18420] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18420] open("./bus", O_RDONLY)     = 3
[pid 18420] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18420] exit_group(0)               = ?
[pid 18420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18421
./strace-static-x86_64: Process 18421 attached
[pid 18421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18421] setpgid(0, 0)               = 0
[pid 18421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18421] write(3, "1000", 4)         = 4
[pid 18421] close(3)                    = 0
[pid 18421] memfd_create("syzkaller", 0) = 3
[pid 18421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18421] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18421] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18421] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18421] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18421] close(4)                    = 0
[pid 18421] close(3)                    = 0
[pid 18421] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18421] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18421] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18421] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18421] open("./bus", O_RDONLY)     = 3
[pid 18421] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18421] exit_group(0)               = ?
[pid 18421] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18421, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18422
./strace-static-x86_64: Process 18422 attached
[pid 18422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18422] setpgid(0, 0)               = 0
[pid 18422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18422] write(3, "1000", 4)         = 4
[pid 18422] close(3)                    = 0
[pid 18422] memfd_create("syzkaller", 0) = 3
[pid 18422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18422] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18422] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18422] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18422] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18422] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18422] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18422] close(4)                    = 0
[pid 18422] close(3)                    = 0
[pid 18422] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18422] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18422] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18422] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18422] open("./bus", O_RDONLY)     = 3
[pid 18422] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18422] exit_group(0)               = ?
[pid 18422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18422, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18423 attached
, child_tidptr=0x55555606b5d0) = 18423
[pid 18423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18423] setpgid(0, 0)               = 0
[pid 18423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18423] write(3, "1000", 4)         = 4
[pid 18423] close(3)                    = 0
[pid 18423] memfd_create("syzkaller", 0) = 3
[pid 18423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18423] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18423] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18423] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18423] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18423] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18423] close(4)                    = 0
[pid 18423] close(3)                    = 0
[pid 18423] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18423] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18423] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18423] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18423] open("./bus", O_RDONLY)     = 3
[pid 18423] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18423] exit_group(0)               = ?
[pid 18423] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18423, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18424 attached
, child_tidptr=0x55555606b5d0) = 18424
[pid 18424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18424] setpgid(0, 0)               = 0
[pid 18424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18424] write(3, "1000", 4)         = 4
[pid 18424] close(3)                    = 0
[pid 18424] memfd_create("syzkaller", 0) = 3
[pid 18424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18424] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18424] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18424] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18424] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18424] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18424] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18424] close(4)                    = 0
[pid 18424] close(3)                    = 0
[pid 18424] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18424] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18424] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18424] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18424] open("./bus", O_RDONLY)     = 3
[pid 18424] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18424] exit_group(0)               = ?
[pid 18424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18425
./strace-static-x86_64: Process 18425 attached
[pid 18425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18425] setpgid(0, 0)               = 0
[pid 18425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18425] write(3, "1000", 4)         = 4
[pid 18425] close(3)                    = 0
[pid 18425] memfd_create("syzkaller", 0) = 3
[pid 18425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18425] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18425] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18425] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18425] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18425] close(4)                    = 0
[pid 18425] close(3)                    = 0
[pid 18425] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18425] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18425] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18425] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18425] open("./bus", O_RDONLY)     = 3
[pid 18425] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18425] exit_group(0)               = ?
[pid 18425] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18425, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18426 attached
, child_tidptr=0x55555606b5d0) = 18426
[pid 18426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18426] setpgid(0, 0)               = 0
[pid 18426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18426] write(3, "1000", 4)         = 4
[pid 18426] close(3)                    = 0
[pid 18426] memfd_create("syzkaller", 0) = 3
[pid 18426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18426] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18426] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18426] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18426] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18426] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18426] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18426] close(4)                    = 0
[pid 18426] close(3)                    = 0
[pid 18426] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18426] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18426] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18426] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18426] open("./bus", O_RDONLY)     = 3
[pid 18426] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18426] exit_group(0)               = ?
[pid 18426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18427 attached
, child_tidptr=0x55555606b5d0) = 18427
[pid 18427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18427] setpgid(0, 0)               = 0
[pid 18427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18427] write(3, "1000", 4)         = 4
[pid 18427] close(3)                    = 0
[pid 18427] memfd_create("syzkaller", 0) = 3
[pid 18427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18427] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18427] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18427] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18427] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18427] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18427] close(4)                    = 0
[pid 18427] close(3)                    = 0
[pid 18427] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18427] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18427] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18427] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18427] open("./bus", O_RDONLY)     = 3
[pid 18427] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18427] exit_group(0)               = ?
[pid 18427] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18427, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18428 attached
, child_tidptr=0x55555606b5d0) = 18428
[pid 18428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18428] setpgid(0, 0)               = 0
[pid 18428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18428] write(3, "1000", 4)         = 4
[pid 18428] close(3)                    = 0
[pid 18428] memfd_create("syzkaller", 0) = 3
[pid 18428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18428] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18428] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18428] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18428] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18428] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18428] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18428] close(4)                    = 0
[pid 18428] close(3)                    = 0
[pid 18428] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18428] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18428] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18428] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18428] open("./bus", O_RDONLY)     = 3
[pid 18428] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18428] exit_group(0)               = ?
[pid 18428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18429
./strace-static-x86_64: Process 18429 attached
[pid 18429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18429] setpgid(0, 0)               = 0
[pid 18429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18429] write(3, "1000", 4)         = 4
[pid 18429] close(3)                    = 0
[pid 18429] memfd_create("syzkaller", 0) = 3
[pid 18429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18429] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18429] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18429] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18429] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18429] close(4)                    = 0
[pid 18429] close(3)                    = 0
[pid 18429] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18429] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18429] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18429] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18429] open("./bus", O_RDONLY)     = 3
[pid 18429] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18429] exit_group(0)               = ?
[pid 18429] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18429, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18430
./strace-static-x86_64: Process 18430 attached
[pid 18430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18430] setpgid(0, 0)               = 0
[pid 18430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18430] write(3, "1000", 4)         = 4
[pid 18430] close(3)                    = 0
[pid 18430] memfd_create("syzkaller", 0) = 3
[pid 18430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18430] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18430] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18430] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18430] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18430] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18430] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18430] close(4)                    = 0
[pid 18430] close(3)                    = 0
[pid 18430] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18430] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18430] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18430] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18430] open("./bus", O_RDONLY)     = 3
[pid 18430] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18430] exit_group(0)               = ?
[pid 18430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18431
./strace-static-x86_64: Process 18431 attached
[pid 18431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18431] setpgid(0, 0)               = 0
[pid 18431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18431] write(3, "1000", 4)         = 4
[pid 18431] close(3)                    = 0
[pid 18431] memfd_create("syzkaller", 0) = 3
[pid 18431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18431] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18431] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18431] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18431] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18431] close(4)                    = 0
[pid 18431] close(3)                    = 0
[pid 18431] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18431] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18431] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18431] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18431] open("./bus", O_RDONLY)     = 3
[pid 18431] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18431] exit_group(0)               = ?
[pid 18431] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18431, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18432 attached
, child_tidptr=0x55555606b5d0) = 18432
[pid 18432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18432] setpgid(0, 0)               = 0
[pid 18432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18432] write(3, "1000", 4)         = 4
[pid 18432] close(3)                    = 0
[pid 18432] memfd_create("syzkaller", 0) = 3
[pid 18432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18432] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18432] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18432] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18432] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18432] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18432] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18432] close(4)                    = 0
[pid 18432] close(3)                    = 0
[pid 18432] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18432] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18432] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18432] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18432] open("./bus", O_RDONLY)     = 3
[pid 18432] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18432] exit_group(0)               = ?
[pid 18432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18432, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18433 attached
, child_tidptr=0x55555606b5d0) = 18433
[pid 18433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18433] setpgid(0, 0)               = 0
[pid 18433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18433] write(3, "1000", 4)         = 4
[pid 18433] close(3)                    = 0
[pid 18433] memfd_create("syzkaller", 0) = 3
[pid 18433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18433] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18433] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18433] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18433] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18433] close(4)                    = 0
[pid 18433] close(3)                    = 0
[pid 18433] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18433] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18433] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18433] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18433] open("./bus", O_RDONLY)     = 3
[pid 18433] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18433] exit_group(0)               = ?
[pid 18433] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18433, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18434 attached
 <unfinished ...>
[pid 18434] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18434
[pid 18434] <... prctl resumed>)        = 0
[pid 18434] setpgid(0, 0)               = 0
[pid 18434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18434] write(3, "1000", 4)         = 4
[pid 18434] close(3)                    = 0
[pid 18434] memfd_create("syzkaller", 0) = 3
[pid 18434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18434] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18434] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18434] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18434] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18434] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18434] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18434] close(4)                    = 0
[pid 18434] close(3)                    = 0
[pid 18434] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18434] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18434] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18434] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18434] open("./bus", O_RDONLY)     = 3
[pid 18434] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18434] exit_group(0)               = ?
[pid 18434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18435
./strace-static-x86_64: Process 18435 attached
[pid 18435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18435] setpgid(0, 0)               = 0
[pid 18435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18435] write(3, "1000", 4)         = 4
[pid 18435] close(3)                    = 0
[pid 18435] memfd_create("syzkaller", 0) = 3
[pid 18435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18435] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18435] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18435] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18435] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18435] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18435] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18435] close(4)                    = 0
[pid 18435] close(3)                    = 0
[pid 18435] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18435] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18435] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18435] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18435] open("./bus", O_RDONLY)     = 3
[pid 18435] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18435] exit_group(0)               = ?
[pid 18435] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18435, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18436 attached
, child_tidptr=0x55555606b5d0) = 18436
[pid 18436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18436] setpgid(0, 0)               = 0
[pid 18436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18436] write(3, "1000", 4)         = 4
[pid 18436] close(3)                    = 0
[pid 18436] memfd_create("syzkaller", 0) = 3
[pid 18436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18436] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18436] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18436] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18436] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18436] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18436] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18436] close(4)                    = 0
[pid 18436] close(3)                    = 0
[pid 18436] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18436] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18436] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18436] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18436] open("./bus", O_RDONLY)     = 3
[pid 18436] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18436] exit_group(0)               = ?
[pid 18436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18437
./strace-static-x86_64: Process 18437 attached
[pid 18437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18437] setpgid(0, 0)               = 0
[pid 18437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18437] write(3, "1000", 4)         = 4
[pid 18437] close(3)                    = 0
[pid 18437] memfd_create("syzkaller", 0) = 3
[pid 18437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18437] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18437] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18437] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18437] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18437] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18437] close(4)                    = 0
[pid 18437] close(3)                    = 0
[pid 18437] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18437] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18437] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18437] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18437] open("./bus", O_RDONLY)     = 3
[pid 18437] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18437] exit_group(0)               = ?
[pid 18437] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18437, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18438
./strace-static-x86_64: Process 18438 attached
[pid 18438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18438] setpgid(0, 0)               = 0
[pid 18438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18438] write(3, "1000", 4)         = 4
[pid 18438] close(3)                    = 0
[pid 18438] memfd_create("syzkaller", 0) = 3
[pid 18438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18438] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18438] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18438] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18438] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18438] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18438] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18438] close(4)                    = 0
[pid 18438] close(3)                    = 0
[pid 18438] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18438] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18438] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18438] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18438] open("./bus", O_RDONLY)     = 3
[pid 18438] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18438] exit_group(0)               = ?
[pid 18438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18438, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18439 attached
, child_tidptr=0x55555606b5d0) = 18439
[pid 18439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18439] setpgid(0, 0)               = 0
[pid 18439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18439] write(3, "1000", 4)         = 4
[pid 18439] close(3)                    = 0
[pid 18439] memfd_create("syzkaller", 0) = 3
[pid 18439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18439] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18439] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18439] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18439] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18439] close(4)                    = 0
[pid 18439] close(3)                    = 0
[pid 18439] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18439] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18439] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18439] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18439] open("./bus", O_RDONLY)     = 3
[pid 18439] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18439] exit_group(0)               = ?
[pid 18439] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18439, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18440
./strace-static-x86_64: Process 18440 attached
[pid 18440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18440] setpgid(0, 0)               = 0
[pid 18440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18440] write(3, "1000", 4)         = 4
[pid 18440] close(3)                    = 0
[pid 18440] memfd_create("syzkaller", 0) = 3
[pid 18440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18440] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18440] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18440] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18440] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18440] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18440] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18440] close(4)                    = 0
[pid 18440] close(3)                    = 0
[pid 18440] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18440] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18440] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18440] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18440] open("./bus", O_RDONLY)     = 3
[pid 18440] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18440] exit_group(0)               = ?
[pid 18440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18441 attached
, child_tidptr=0x55555606b5d0) = 18441
[pid 18441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18441] setpgid(0, 0)               = 0
[pid 18441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18441] write(3, "1000", 4)         = 4
[pid 18441] close(3)                    = 0
[pid 18441] memfd_create("syzkaller", 0) = 3
[pid 18441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18441] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18441] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18441] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18441] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18441] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18441] close(4)                    = 0
[pid 18441] close(3)                    = 0
[pid 18441] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18441] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18441] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18441] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18441] open("./bus", O_RDONLY)     = 3
[pid 18441] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18441] exit_group(0)               = ?
[pid 18441] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18441, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18442
./strace-static-x86_64: Process 18442 attached
[pid 18442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18442] setpgid(0, 0)               = 0
[pid 18442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18442] write(3, "1000", 4)         = 4
[pid 18442] close(3)                    = 0
[pid 18442] memfd_create("syzkaller", 0) = 3
[pid 18442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18442] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18442] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18442] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18442] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18442] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18442] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18442] close(4)                    = 0
[pid 18442] close(3)                    = 0
[pid 18442] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18442] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18442] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18442] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18442] open("./bus", O_RDONLY)     = 3
[pid 18442] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18442] exit_group(0)               = ?
[pid 18442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18443
./strace-static-x86_64: Process 18443 attached
[pid 18443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18443] setpgid(0, 0)               = 0
[pid 18443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18443] write(3, "1000", 4)         = 4
[pid 18443] close(3)                    = 0
[pid 18443] memfd_create("syzkaller", 0) = 3
[pid 18443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18443] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18443] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18443] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18443] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18443] close(4)                    = 0
[pid 18443] close(3)                    = 0
[pid 18443] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18443] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18443] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18443] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18443] open("./bus", O_RDONLY)     = 3
[pid 18443] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18443] exit_group(0)               = ?
[pid 18443] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18443, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18444 attached
, child_tidptr=0x55555606b5d0) = 18444
[pid 18444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18444] setpgid(0, 0)               = 0
[pid 18444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18444] write(3, "1000", 4)         = 4
[pid 18444] close(3)                    = 0
[pid 18444] memfd_create("syzkaller", 0) = 3
[pid 18444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18444] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18444] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18444] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18444] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18444] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18444] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18444] close(4)                    = 0
[pid 18444] close(3)                    = 0
[pid 18444] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18444] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18444] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18444] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18444] open("./bus", O_RDONLY)     = 3
[pid 18444] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18444] exit_group(0)               = ?
[pid 18444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18444, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18445
./strace-static-x86_64: Process 18445 attached
[pid 18445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18445] setpgid(0, 0)               = 0
[pid 18445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18445] write(3, "1000", 4)         = 4
[pid 18445] close(3)                    = 0
[pid 18445] memfd_create("syzkaller", 0) = 3
[pid 18445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18445] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18445] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18445] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18445] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18445] close(4)                    = 0
[pid 18445] close(3)                    = 0
[pid 18445] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18445] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18445] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18445] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18445] open("./bus", O_RDONLY)     = 3
[pid 18445] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18445] exit_group(0)               = ?
[pid 18445] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18445, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18446 attached
, child_tidptr=0x55555606b5d0) = 18446
[pid 18446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18446] setpgid(0, 0)               = 0
[pid 18446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18446] write(3, "1000", 4)         = 4
[pid 18446] close(3)                    = 0
[pid 18446] memfd_create("syzkaller", 0) = 3
[pid 18446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18446] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18446] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18446] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18446] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18446] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18446] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18446] close(4)                    = 0
[pid 18446] close(3)                    = 0
[pid 18446] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18446] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18446] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18446] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18446] open("./bus", O_RDONLY)     = 3
[pid 18446] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18446] exit_group(0)               = ?
[pid 18446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18447
./strace-static-x86_64: Process 18447 attached
[pid 18447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18447] setpgid(0, 0)               = 0
[pid 18447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18447] write(3, "1000", 4)         = 4
[pid 18447] close(3)                    = 0
[pid 18447] memfd_create("syzkaller", 0) = 3
[pid 18447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18447] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18447] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18447] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18447] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18447] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18447] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18447] close(4)                    = 0
[pid 18447] close(3)                    = 0
[pid 18447] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18447] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18447] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18447] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18447] open("./bus", O_RDONLY)     = 3
[pid 18447] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18447] exit_group(0)               = ?
[pid 18447] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18447, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18448 attached
, child_tidptr=0x55555606b5d0) = 18448
[pid 18448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18448] setpgid(0, 0)               = 0
[pid 18448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18448] write(3, "1000", 4)         = 4
[pid 18448] close(3)                    = 0
[pid 18448] memfd_create("syzkaller", 0) = 3
[pid 18448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18448] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18448] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18448] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18448] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18448] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18448] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18448] close(4)                    = 0
[pid 18448] close(3)                    = 0
[pid 18448] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18448] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18448] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18448] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18448] open("./bus", O_RDONLY)     = 3
[pid 18448] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18448] exit_group(0)               = ?
[pid 18448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18449
./strace-static-x86_64: Process 18449 attached
[pid 18449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18449] setpgid(0, 0)               = 0
[pid 18449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18449] write(3, "1000", 4)         = 4
[pid 18449] close(3)                    = 0
[pid 18449] memfd_create("syzkaller", 0) = 3
[pid 18449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18449] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18449] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18449] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18449] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18449] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18449] close(4)                    = 0
[pid 18449] close(3)                    = 0
[pid 18449] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18449] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18449] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18449] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18449] open("./bus", O_RDONLY)     = 3
[pid 18449] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18449] exit_group(0)               = ?
[pid 18449] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18449, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18450
./strace-static-x86_64: Process 18450 attached
[pid 18450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18450] setpgid(0, 0)               = 0
[pid 18450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18450] write(3, "1000", 4)         = 4
[pid 18450] close(3)                    = 0
[pid 18450] memfd_create("syzkaller", 0) = 3
[pid 18450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18450] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18450] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18450] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18450] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18450] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18450] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18450] close(4)                    = 0
[pid 18450] close(3)                    = 0
[pid 18450] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18450] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18450] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18450] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18450] open("./bus", O_RDONLY)     = 3
[pid 18450] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18450] exit_group(0)               = ?
[pid 18450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18451 attached
, child_tidptr=0x55555606b5d0) = 18451
[pid 18451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18451] setpgid(0, 0)               = 0
[pid 18451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18451] write(3, "1000", 4)         = 4
[pid 18451] close(3)                    = 0
[pid 18451] memfd_create("syzkaller", 0) = 3
[pid 18451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18451] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18451] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18451] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18451] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18451] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18451] close(4)                    = 0
[pid 18451] close(3)                    = 0
[pid 18451] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18451] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18451] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18451] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18451] open("./bus", O_RDONLY)     = 3
[pid 18451] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18451] exit_group(0)               = ?
[pid 18451] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18451, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18452
./strace-static-x86_64: Process 18452 attached
[pid 18452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18452] setpgid(0, 0)               = 0
[pid 18452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18452] write(3, "1000", 4)         = 4
[pid 18452] close(3)                    = 0
[pid 18452] memfd_create("syzkaller", 0) = 3
[pid 18452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18452] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18452] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18452] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18452] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18452] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18452] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18452] close(4)                    = 0
[pid 18452] close(3)                    = 0
[pid 18452] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18452] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18452] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18452] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18452] open("./bus", O_RDONLY)     = 3
[pid 18452] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18452] exit_group(0)               = ?
[pid 18452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18453
./strace-static-x86_64: Process 18453 attached
[pid 18453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18453] setpgid(0, 0)               = 0
[pid 18453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18453] write(3, "1000", 4)         = 4
[pid 18453] close(3)                    = 0
[pid 18453] memfd_create("syzkaller", 0) = 3
[pid 18453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18453] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18453] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18453] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18453] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18453] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18453] close(4)                    = 0
[pid 18453] close(3)                    = 0
[pid 18453] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18453] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18453] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18453] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18453] open("./bus", O_RDONLY)     = 3
[pid 18453] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18453] exit_group(0)               = ?
[pid 18453] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18453, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18454
./strace-static-x86_64: Process 18454 attached
[pid 18454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18454] setpgid(0, 0)               = 0
[pid 18454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18454] write(3, "1000", 4)         = 4
[pid 18454] close(3)                    = 0
[pid 18454] memfd_create("syzkaller", 0) = 3
[pid 18454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18454] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18454] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18454] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18454] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18454] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18454] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18454] close(4)                    = 0
[pid 18454] close(3)                    = 0
[pid 18454] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18454] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18454] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18454] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18454] open("./bus", O_RDONLY)     = 3
[pid 18454] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18454] exit_group(0)               = ?
[pid 18454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18455 attached
 <unfinished ...>
[pid 18455] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18455
[pid 18455] <... prctl resumed>)        = 0
[pid 18455] setpgid(0, 0)               = 0
[pid 18455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18455] write(3, "1000", 4)         = 4
[pid 18455] close(3)                    = 0
[pid 18455] memfd_create("syzkaller", 0) = 3
[pid 18455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18455] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18455] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18455] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18455] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18455] close(4)                    = 0
[pid 18455] close(3)                    = 0
[pid 18455] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18455] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18455] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18455] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18455] open("./bus", O_RDONLY)     = 3
[pid 18455] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18455] exit_group(0)               = ?
[pid 18455] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18455, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18456 attached
, child_tidptr=0x55555606b5d0) = 18456
[pid 18456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18456] setpgid(0, 0)               = 0
[pid 18456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18456] write(3, "1000", 4)         = 4
[pid 18456] close(3)                    = 0
[pid 18456] memfd_create("syzkaller", 0) = 3
[pid 18456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18456] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18456] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18456] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18456] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18456] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18456] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18456] close(4)                    = 0
[pid 18456] close(3)                    = 0
[pid 18456] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18456] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18456] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18456] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18456] open("./bus", O_RDONLY)     = 3
[pid 18456] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18456] exit_group(0)               = ?
[pid 18456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18457
./strace-static-x86_64: Process 18457 attached
[pid 18457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18457] setpgid(0, 0)               = 0
[pid 18457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18457] write(3, "1000", 4)         = 4
[pid 18457] close(3)                    = 0
[pid 18457] memfd_create("syzkaller", 0) = 3
[pid 18457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18457] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18457] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18457] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18457] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18457] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18457] close(4)                    = 0
[pid 18457] close(3)                    = 0
[pid 18457] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18457] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18457] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18457] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18457] open("./bus", O_RDONLY)     = 3
[pid 18457] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18457] exit_group(0)               = ?
[pid 18457] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18457, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18458 attached
, child_tidptr=0x55555606b5d0) = 18458
[pid 18458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18458] setpgid(0, 0)               = 0
[pid 18458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18458] write(3, "1000", 4)         = 4
[pid 18458] close(3)                    = 0
[pid 18458] memfd_create("syzkaller", 0) = 3
[pid 18458] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18458] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18458] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18458] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18458] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18458] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18458] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18458] close(4)                    = 0
[pid 18458] close(3)                    = 0
[pid 18458] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18458] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18458] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18458] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18458] open("./bus", O_RDONLY)     = 3
[pid 18458] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18458] exit_group(0)               = ?
[pid 18458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18459
./strace-static-x86_64: Process 18459 attached
[pid 18459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18459] setpgid(0, 0)               = 0
[pid 18459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18459] write(3, "1000", 4)         = 4
[pid 18459] close(3)                    = 0
[pid 18459] memfd_create("syzkaller", 0) = 3
[pid 18459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18459] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18459] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18459] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18459] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18459] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18459] close(4)                    = 0
[pid 18459] close(3)                    = 0
[pid 18459] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18459] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18459] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18459] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18459] open("./bus", O_RDONLY)     = 3
[pid 18459] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18459] exit_group(0)               = ?
[pid 18459] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18459, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18460
./strace-static-x86_64: Process 18460 attached
[pid 18460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18460] setpgid(0, 0)               = 0
[pid 18460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18460] write(3, "1000", 4)         = 4
[pid 18460] close(3)                    = 0
[pid 18460] memfd_create("syzkaller", 0) = 3
[pid 18460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18460] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18460] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18460] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18460] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18460] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18460] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18460] close(4)                    = 0
[pid 18460] close(3)                    = 0
[pid 18460] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18460] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18460] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18460] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18460] open("./bus", O_RDONLY)     = 3
[pid 18460] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18460] exit_group(0)               = ?
[pid 18460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18460, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18461 attached
 <unfinished ...>
[pid 18461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18461] setpgid(0, 0)               = 0
[pid 18461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18461
[pid 18461] <... openat resumed>)       = 3
[pid 18461] write(3, "1000", 4)         = 4
[pid 18461] close(3)                    = 0
[pid 18461] memfd_create("syzkaller", 0) = 3
[pid 18461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18461] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18461] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18461] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18461] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18461] close(4)                    = 0
[pid 18461] close(3)                    = 0
[pid 18461] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18461] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18461] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18461] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18461] open("./bus", O_RDONLY)     = 3
[pid 18461] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18461] exit_group(0)               = ?
[pid 18461] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18461, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18462 attached
, child_tidptr=0x55555606b5d0) = 18462
[pid 18462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18462] setpgid(0, 0)               = 0
[pid 18462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18462] write(3, "1000", 4)         = 4
[pid 18462] close(3)                    = 0
[pid 18462] memfd_create("syzkaller", 0) = 3
[pid 18462] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18462] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18462] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18462] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18462] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18462] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18462] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18462] close(4)                    = 0
[pid 18462] close(3)                    = 0
[pid 18462] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18462] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18462] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18462] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18462] open("./bus", O_RDONLY)     = 3
[pid 18462] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18462] exit_group(0)               = ?
[pid 18462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18463 attached
, child_tidptr=0x55555606b5d0) = 18463
[pid 18463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18463] setpgid(0, 0)               = 0
[pid 18463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18463] write(3, "1000", 4)         = 4
[pid 18463] close(3)                    = 0
[pid 18463] memfd_create("syzkaller", 0) = 3
[pid 18463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18463] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18463] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18463] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18463] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18463] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18463] close(4)                    = 0
[pid 18463] close(3)                    = 0
[pid 18463] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18463] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18463] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18463] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18463] open("./bus", O_RDONLY)     = 3
[pid 18463] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18463] exit_group(0)               = ?
[pid 18463] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18463, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18464
./strace-static-x86_64: Process 18464 attached
[pid 18464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18464] setpgid(0, 0)               = 0
[pid 18464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18464] write(3, "1000", 4)         = 4
[pid 18464] close(3)                    = 0
[pid 18464] memfd_create("syzkaller", 0) = 3
[pid 18464] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18464] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18464] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18464] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18464] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18464] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18464] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18464] close(4)                    = 0
[pid 18464] close(3)                    = 0
[pid 18464] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18464] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18464] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18464] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18464] open("./bus", O_RDONLY)     = 3
[pid 18464] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18464] exit_group(0)               = ?
[pid 18464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18465 attached
, child_tidptr=0x55555606b5d0) = 18465
[pid 18465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18465] setpgid(0, 0)               = 0
[pid 18465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18465] write(3, "1000", 4)         = 4
[pid 18465] close(3)                    = 0
[pid 18465] memfd_create("syzkaller", 0) = 3
[pid 18465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18465] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18465] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18465] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18465] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18465] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18465] close(4)                    = 0
[pid 18465] close(3)                    = 0
[pid 18465] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18465] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18465] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18465] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18465] open("./bus", O_RDONLY)     = 3
[pid 18465] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18465] exit_group(0)               = ?
[pid 18465] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18465, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18466 attached
, child_tidptr=0x55555606b5d0) = 18466
[pid 18466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18466] setpgid(0, 0)               = 0
[pid 18466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18466] write(3, "1000", 4)         = 4
[pid 18466] close(3)                    = 0
[pid 18466] memfd_create("syzkaller", 0) = 3
[pid 18466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18466] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18466] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18466] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18466] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18466] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18466] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18466] close(4)                    = 0
[pid 18466] close(3)                    = 0
[pid 18466] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18466] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18466] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18466] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18466] open("./bus", O_RDONLY)     = 3
[pid 18466] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18466] exit_group(0)               = ?
[pid 18466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18467
./strace-static-x86_64: Process 18467 attached
[pid 18467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18467] setpgid(0, 0)               = 0
[pid 18467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18467] write(3, "1000", 4)         = 4
[pid 18467] close(3)                    = 0
[pid 18467] memfd_create("syzkaller", 0) = 3
[pid 18467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18467] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18467] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18467] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18467] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18467] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18467] close(4)                    = 0
[pid 18467] close(3)                    = 0
[pid 18467] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18467] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18467] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18467] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18467] open("./bus", O_RDONLY)     = 3
[pid 18467] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18467] exit_group(0)               = ?
[pid 18467] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18467, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18468 attached
, child_tidptr=0x55555606b5d0) = 18468
[pid 18468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18468] setpgid(0, 0)               = 0
[pid 18468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18468] write(3, "1000", 4)         = 4
[pid 18468] close(3)                    = 0
[pid 18468] memfd_create("syzkaller", 0) = 3
[pid 18468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18468] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18468] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18468] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18468] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18468] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18468] close(4)                    = 0
[pid 18468] close(3)                    = 0
[pid 18468] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18468] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18468] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18468] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18468] open("./bus", O_RDONLY)     = 3
[pid 18468] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18468] exit_group(0)               = ?
[pid 18468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18469
./strace-static-x86_64: Process 18469 attached
[pid 18469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18469] setpgid(0, 0)               = 0
[pid 18469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18469] write(3, "1000", 4)         = 4
[pid 18469] close(3)                    = 0
[pid 18469] memfd_create("syzkaller", 0) = 3
[pid 18469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18469] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18469] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18469] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18469] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18469] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18469] close(4)                    = 0
[pid 18469] close(3)                    = 0
[pid 18469] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18469] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18469] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18469] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18469] open("./bus", O_RDONLY)     = 3
[pid 18469] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18469] exit_group(0)               = ?
[pid 18469] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18469, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18470 attached
, child_tidptr=0x55555606b5d0) = 18470
[pid 18470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18470] setpgid(0, 0)               = 0
[pid 18470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18470] write(3, "1000", 4)         = 4
[pid 18470] close(3)                    = 0
[pid 18470] memfd_create("syzkaller", 0) = 3
[pid 18470] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18470] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18470] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18470] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18470] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18470] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18470] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18470] close(4)                    = 0
[pid 18470] close(3)                    = 0
[pid 18470] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18470] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18470] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18470] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18470] open("./bus", O_RDONLY)     = 3
[pid 18470] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18470] exit_group(0)               = ?
[pid 18470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18471
./strace-static-x86_64: Process 18471 attached
[pid 18471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18471] setpgid(0, 0)               = 0
[pid 18471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18471] write(3, "1000", 4)         = 4
[pid 18471] close(3)                    = 0
[pid 18471] memfd_create("syzkaller", 0) = 3
[pid 18471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18471] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18471] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18471] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18471] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18471] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18471] close(4)                    = 0
[pid 18471] close(3)                    = 0
[pid 18471] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18471] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18471] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18471] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18471] open("./bus", O_RDONLY)     = 3
[pid 18471] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18471] exit_group(0)               = ?
[pid 18471] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18471, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18472 attached
 <unfinished ...>
[pid 18472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18472
[pid 18472] setpgid(0, 0)               = 0
[pid 18472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18472] write(3, "1000", 4)         = 4
[pid 18472] close(3)                    = 0
[pid 18472] memfd_create("syzkaller", 0) = 3
[pid 18472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18472] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18472] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18472] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18472] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18472] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18472] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18472] close(4)                    = 0
[pid 18472] close(3)                    = 0
[pid 18472] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18472] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18472] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18472] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18472] open("./bus", O_RDONLY)     = 3
[pid 18472] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18472] exit_group(0)               = ?
[pid 18472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18473 attached
, child_tidptr=0x55555606b5d0) = 18473
[pid 18473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18473] setpgid(0, 0)               = 0
[pid 18473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18473] write(3, "1000", 4)         = 4
[pid 18473] close(3)                    = 0
[pid 18473] memfd_create("syzkaller", 0) = 3
[pid 18473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18473] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18473] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18473] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18473] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18473] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18473] close(4)                    = 0
[pid 18473] close(3)                    = 0
[pid 18473] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18473] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18473] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18473] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18473] open("./bus", O_RDONLY)     = 3
[pid 18473] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18473] exit_group(0)               = ?
[pid 18473] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18473, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18474 attached
, child_tidptr=0x55555606b5d0) = 18474
[pid 18474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18474] setpgid(0, 0)               = 0
[pid 18474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18474] write(3, "1000", 4)         = 4
[pid 18474] close(3)                    = 0
[pid 18474] memfd_create("syzkaller", 0) = 3
[pid 18474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18474] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18474] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18474] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18474] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18474] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18474] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18474] close(4)                    = 0
[pid 18474] close(3)                    = 0
[pid 18474] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18474] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18474] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18474] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18474] open("./bus", O_RDONLY)     = 3
[pid 18474] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18474] exit_group(0)               = ?
[pid 18474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18475
./strace-static-x86_64: Process 18475 attached
[pid 18475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18475] setpgid(0, 0)               = 0
[pid 18475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18475] write(3, "1000", 4)         = 4
[pid 18475] close(3)                    = 0
[pid 18475] memfd_create("syzkaller", 0) = 3
[pid 18475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18475] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18475] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18475] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18475] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18475] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18475] close(4)                    = 0
[pid 18475] close(3)                    = 0
[pid 18475] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18475] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18475] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18475] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18475] open("./bus", O_RDONLY)     = 3
[pid 18475] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18475] exit_group(0)               = ?
[pid 18475] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18475, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18476
./strace-static-x86_64: Process 18476 attached
[pid 18476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18476] setpgid(0, 0)               = 0
[pid 18476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18476] write(3, "1000", 4)         = 4
[pid 18476] close(3)                    = 0
[pid 18476] memfd_create("syzkaller", 0) = 3
[pid 18476] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18476] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18476] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18476] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18476] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18476] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18476] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18476] close(4)                    = 0
[pid 18476] close(3)                    = 0
[pid 18476] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18476] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18476] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18476] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18476] open("./bus", O_RDONLY)     = 3
[pid 18476] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18476] exit_group(0)               = ?
[pid 18476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18477
./strace-static-x86_64: Process 18477 attached
[pid 18477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18477] setpgid(0, 0)               = 0
[pid 18477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18477] write(3, "1000", 4)         = 4
[pid 18477] close(3)                    = 0
[pid 18477] memfd_create("syzkaller", 0) = 3
[pid 18477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18477] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18477] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18477] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18477] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18477] close(4)                    = 0
[pid 18477] close(3)                    = 0
[pid 18477] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18477] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18477] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18477] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18477] open("./bus", O_RDONLY)     = 3
[pid 18477] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18477] exit_group(0)               = ?
[pid 18477] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18477, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18478 attached
 <unfinished ...>
[pid 18478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18478] setpgid(0, 0)               = 0
[pid 18478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18478
[pid 18478] <... openat resumed>)       = 3
[pid 18478] write(3, "1000", 4)         = 4
[pid 18478] close(3)                    = 0
[pid 18478] memfd_create("syzkaller", 0) = 3
[pid 18478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18478] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18478] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18478] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18478] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18478] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18478] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18478] close(4)                    = 0
[pid 18478] close(3)                    = 0
[pid 18478] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18478] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18478] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18478] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18478] open("./bus", O_RDONLY)     = 3
[pid 18478] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18478] exit_group(0)               = ?
[pid 18478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18478, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18479 attached
, child_tidptr=0x55555606b5d0) = 18479
[pid 18479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18479] setpgid(0, 0)               = 0
[pid 18479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18479] write(3, "1000", 4)         = 4
[pid 18479] close(3)                    = 0
[pid 18479] memfd_create("syzkaller", 0) = 3
[pid 18479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18479] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18479] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18479] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18479] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18479] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18479] close(4)                    = 0
[pid 18479] close(3)                    = 0
[pid 18479] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18479] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18479] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18479] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18479] open("./bus", O_RDONLY)     = 3
[pid 18479] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18479] exit_group(0)               = ?
[pid 18479] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18479, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18480 attached
, child_tidptr=0x55555606b5d0) = 18480
[pid 18480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18480] setpgid(0, 0)               = 0
[pid 18480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18480] write(3, "1000", 4)         = 4
[pid 18480] close(3)                    = 0
[pid 18480] memfd_create("syzkaller", 0) = 3
[pid 18480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18480] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18480] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18480] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18480] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18480] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18480] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18480] close(4)                    = 0
[pid 18480] close(3)                    = 0
[pid 18480] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18480] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18480] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18480] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18480] open("./bus", O_RDONLY)     = 3
[pid 18480] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18480] exit_group(0)               = ?
[pid 18480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18481 attached
, child_tidptr=0x55555606b5d0) = 18481
[pid 18481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18481] setpgid(0, 0)               = 0
[pid 18481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18481] write(3, "1000", 4)         = 4
[pid 18481] close(3)                    = 0
[pid 18481] memfd_create("syzkaller", 0) = 3
[pid 18481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18481] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18481] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18481] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18481] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18481] close(4)                    = 0
[pid 18481] close(3)                    = 0
[pid 18481] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18481] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18481] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18481] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18481] open("./bus", O_RDONLY)     = 3
[pid 18481] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18481] exit_group(0)               = ?
[pid 18481] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18481, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18482
./strace-static-x86_64: Process 18482 attached
[pid 18482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18482] setpgid(0, 0)               = 0
[pid 18482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18482] write(3, "1000", 4)         = 4
[pid 18482] close(3)                    = 0
[pid 18482] memfd_create("syzkaller", 0) = 3
[pid 18482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18482] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18482] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18482] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18482] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18482] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18482] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18482] close(4)                    = 0
[pid 18482] close(3)                    = 0
[pid 18482] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18482] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18482] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18482] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18482] open("./bus", O_RDONLY)     = 3
[pid 18482] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18482] exit_group(0)               = ?
[pid 18482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18483 attached
 <unfinished ...>
[pid 18483] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18483
[pid 18483] <... prctl resumed>)        = 0
[pid 18483] setpgid(0, 0)               = 0
[pid 18483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18483] write(3, "1000", 4)         = 4
[pid 18483] close(3)                    = 0
[pid 18483] memfd_create("syzkaller", 0) = 3
[pid 18483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18483] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18483] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18483] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18483] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18483] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18483] close(4)                    = 0
[pid 18483] close(3)                    = 0
[pid 18483] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18483] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18483] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18483] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18483] open("./bus", O_RDONLY)     = 3
[pid 18483] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18483] exit_group(0)               = ?
[pid 18483] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18483, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18484 attached
, child_tidptr=0x55555606b5d0) = 18484
[pid 18484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18484] setpgid(0, 0)               = 0
[pid 18484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18484] write(3, "1000", 4)         = 4
[pid 18484] close(3)                    = 0
[pid 18484] memfd_create("syzkaller", 0) = 3
[pid 18484] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18484] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18484] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18484] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18484] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18484] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18484] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18484] close(4)                    = 0
[pid 18484] close(3)                    = 0
[pid 18484] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18484] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18484] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18484] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18484] open("./bus", O_RDONLY)     = 3
[pid 18484] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18484] exit_group(0)               = ?
[pid 18484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18485 attached
, child_tidptr=0x55555606b5d0) = 18485
[pid 18485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18485] setpgid(0, 0)               = 0
[pid 18485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18485] write(3, "1000", 4)         = 4
[pid 18485] close(3)                    = 0
[pid 18485] memfd_create("syzkaller", 0) = 3
[pid 18485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18485] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18485] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18485] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18485] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18485] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18485] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18485] close(4)                    = 0
[pid 18485] close(3)                    = 0
[pid 18485] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18485] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18485] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18485] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18485] open("./bus", O_RDONLY)     = 3
[pid 18485] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18485] exit_group(0)               = ?
[pid 18485] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18485, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18486
./strace-static-x86_64: Process 18486 attached
[pid 18486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18486] setpgid(0, 0)               = 0
[pid 18486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18486] write(3, "1000", 4)         = 4
[pid 18486] close(3)                    = 0
[pid 18486] memfd_create("syzkaller", 0) = 3
[pid 18486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18486] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18486] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18486] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18486] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18486] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18486] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18486] close(4)                    = 0
[pid 18486] close(3)                    = 0
[pid 18486] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18486] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18486] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18486] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18486] open("./bus", O_RDONLY)     = 3
[pid 18486] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18486] exit_group(0)               = ?
[pid 18486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18487
./strace-static-x86_64: Process 18487 attached
[pid 18487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18487] setpgid(0, 0)               = 0
[pid 18487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18487] write(3, "1000", 4)         = 4
[pid 18487] close(3)                    = 0
[pid 18487] memfd_create("syzkaller", 0) = 3
[pid 18487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18487] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18487] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18487] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18487] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18487] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18487] close(4)                    = 0
[pid 18487] close(3)                    = 0
[pid 18487] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18487] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18487] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18487] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18487] open("./bus", O_RDONLY)     = 3
[pid 18487] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18487] exit_group(0)               = ?
[pid 18487] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18487, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18488 attached
, child_tidptr=0x55555606b5d0) = 18488
[pid 18488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18488] setpgid(0, 0)               = 0
[pid 18488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18488] write(3, "1000", 4)         = 4
[pid 18488] close(3)                    = 0
[pid 18488] memfd_create("syzkaller", 0) = 3
[pid 18488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18488] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18488] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18488] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18488] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18488] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18488] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18488] close(4)                    = 0
[pid 18488] close(3)                    = 0
[pid 18488] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18488] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18488] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18488] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18488] open("./bus", O_RDONLY)     = 3
[pid 18488] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18488] exit_group(0)               = ?
[pid 18488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18489
./strace-static-x86_64: Process 18489 attached
[pid 18489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18489] setpgid(0, 0)               = 0
[pid 18489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18489] write(3, "1000", 4)         = 4
[pid 18489] close(3)                    = 0
[pid 18489] memfd_create("syzkaller", 0) = 3
[pid 18489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18489] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18489] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18489] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18489] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18489] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18489] close(4)                    = 0
[pid 18489] close(3)                    = 0
[pid 18489] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18489] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18489] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18489] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18489] open("./bus", O_RDONLY)     = 3
[pid 18489] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18489] exit_group(0)               = ?
[pid 18489] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18489, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18490
./strace-static-x86_64: Process 18490 attached
[pid 18490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18490] setpgid(0, 0)               = 0
[pid 18490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18490] write(3, "1000", 4)         = 4
[pid 18490] close(3)                    = 0
[pid 18490] memfd_create("syzkaller", 0) = 3
[pid 18490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18490] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18490] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18490] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18490] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18490] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18490] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18490] close(4)                    = 0
[pid 18490] close(3)                    = 0
[pid 18490] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18490] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18490] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18490] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18490] open("./bus", O_RDONLY)     = 3
[pid 18490] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18490] exit_group(0)               = ?
[pid 18490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18491
./strace-static-x86_64: Process 18491 attached
[pid 18491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18491] setpgid(0, 0)               = 0
[pid 18491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18491] write(3, "1000", 4)         = 4
[pid 18491] close(3)                    = 0
[pid 18491] memfd_create("syzkaller", 0) = 3
[pid 18491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18491] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18491] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18491] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18491] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18491] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18491] close(4)                    = 0
[pid 18491] close(3)                    = 0
[pid 18491] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18491] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18491] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18491] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18491] open("./bus", O_RDONLY)     = 3
[pid 18491] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18491] exit_group(0)               = ?
[pid 18491] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18491, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18492
./strace-static-x86_64: Process 18492 attached
[pid 18492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18492] setpgid(0, 0)               = 0
[pid 18492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18492] write(3, "1000", 4)         = 4
[pid 18492] close(3)                    = 0
[pid 18492] memfd_create("syzkaller", 0) = 3
[pid 18492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18492] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18492] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18492] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18492] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18492] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18492] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18492] close(4)                    = 0
[pid 18492] close(3)                    = 0
[pid 18492] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18492] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18492] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18492] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18492] open("./bus", O_RDONLY)     = 3
[pid 18492] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18492] exit_group(0)               = ?
[pid 18492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18493
./strace-static-x86_64: Process 18493 attached
[pid 18493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18493] setpgid(0, 0)               = 0
[pid 18493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18493] write(3, "1000", 4)         = 4
[pid 18493] close(3)                    = 0
[pid 18493] memfd_create("syzkaller", 0) = 3
[pid 18493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18493] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18493] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18493] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18493] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18493] close(4)                    = 0
[pid 18493] close(3)                    = 0
[pid 18493] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18493] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18493] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18493] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18493] open("./bus", O_RDONLY)     = 3
[pid 18493] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18493] exit_group(0)               = ?
[pid 18493] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18493, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18494
./strace-static-x86_64: Process 18494 attached
[pid 18494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18494] setpgid(0, 0)               = 0
[pid 18494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18494] write(3, "1000", 4)         = 4
[pid 18494] close(3)                    = 0
[pid 18494] memfd_create("syzkaller", 0) = 3
[pid 18494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18494] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18494] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18494] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18494] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18494] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18494] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18494] close(4)                    = 0
[pid 18494] close(3)                    = 0
[pid 18494] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18494] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18494] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18494] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18494] open("./bus", O_RDONLY)     = 3
[pid 18494] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18494] exit_group(0)               = ?
[pid 18494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18495
./strace-static-x86_64: Process 18495 attached
[pid 18495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18495] setpgid(0, 0)               = 0
[pid 18495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18495] write(3, "1000", 4)         = 4
[pid 18495] close(3)                    = 0
[pid 18495] memfd_create("syzkaller", 0) = 3
[pid 18495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18495] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18495] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18495] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18495] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18495] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18495] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18495] close(4)                    = 0
[pid 18495] close(3)                    = 0
[pid 18495] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18495] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18495] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18495] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18495] open("./bus", O_RDONLY)     = 3
[pid 18495] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18495] exit_group(0)               = ?
[pid 18495] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18495, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18496
./strace-static-x86_64: Process 18496 attached
[pid 18496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18496] setpgid(0, 0)               = 0
[pid 18496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18496] write(3, "1000", 4)         = 4
[pid 18496] close(3)                    = 0
[pid 18496] memfd_create("syzkaller", 0) = 3
[pid 18496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18496] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18496] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18496] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18496] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18496] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18496] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18496] close(4)                    = 0
[pid 18496] close(3)                    = 0
[pid 18496] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18496] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18496] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18496] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18496] open("./bus", O_RDONLY)     = 3
[pid 18496] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18496] exit_group(0)               = ?
[pid 18496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18497 attached
, child_tidptr=0x55555606b5d0) = 18497
[pid 18497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18497] setpgid(0, 0)               = 0
[pid 18497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18497] write(3, "1000", 4)         = 4
[pid 18497] close(3)                    = 0
[pid 18497] memfd_create("syzkaller", 0) = 3
[pid 18497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18497] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18497] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18497] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18497] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18497] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18497] close(4)                    = 0
[pid 18497] close(3)                    = 0
[pid 18497] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18497] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18497] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18497] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18497] open("./bus", O_RDONLY)     = 3
[pid 18497] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18497] exit_group(0)               = ?
[pid 18497] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18497, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18498
./strace-static-x86_64: Process 18498 attached
[pid 18498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18498] setpgid(0, 0)               = 0
[pid 18498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18498] write(3, "1000", 4)         = 4
[pid 18498] close(3)                    = 0
[pid 18498] memfd_create("syzkaller", 0) = 3
[pid 18498] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18498] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18498] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18498] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18498] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18498] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18498] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18498] close(4)                    = 0
[pid 18498] close(3)                    = 0
[pid 18498] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18498] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18498] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18498] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18498] open("./bus", O_RDONLY)     = 3
[pid 18498] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18498] exit_group(0)               = ?
[pid 18498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18498, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18499
./strace-static-x86_64: Process 18499 attached
[pid 18499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18499] setpgid(0, 0)               = 0
[pid 18499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18499] write(3, "1000", 4)         = 4
[pid 18499] close(3)                    = 0
[pid 18499] memfd_create("syzkaller", 0) = 3
[pid 18499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18499] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18499] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18499] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18499] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18499] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18499] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18499] close(4)                    = 0
[pid 18499] close(3)                    = 0
[pid 18499] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18499] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18499] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18499] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18499] open("./bus", O_RDONLY)     = 3
[pid 18499] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18499] exit_group(0)               = ?
[pid 18499] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18499, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18500 attached
, child_tidptr=0x55555606b5d0) = 18500
[pid 18500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18500] setpgid(0, 0)               = 0
[pid 18500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18500] write(3, "1000", 4)         = 4
[pid 18500] close(3)                    = 0
[pid 18500] memfd_create("syzkaller", 0) = 3
[pid 18500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18500] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18500] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18500] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18500] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18500] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18500] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18500] close(4)                    = 0
[pid 18500] close(3)                    = 0
[pid 18500] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18500] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18500] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18500] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18500] open("./bus", O_RDONLY)     = 3
[pid 18500] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18500] exit_group(0)               = ?
[pid 18500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18501 attached
, child_tidptr=0x55555606b5d0) = 18501
[pid 18501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18501] setpgid(0, 0)               = 0
[pid 18501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18501] write(3, "1000", 4)         = 4
[pid 18501] close(3)                    = 0
[pid 18501] memfd_create("syzkaller", 0) = 3
[pid 18501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18501] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18501] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18501] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18501] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18501] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18501] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18501] close(4)                    = 0
[pid 18501] close(3)                    = 0
[pid 18501] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18501] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18501] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18501] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18501] open("./bus", O_RDONLY)     = 3
[pid 18501] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18501] exit_group(0)               = ?
[pid 18501] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18501, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18502 attached
, child_tidptr=0x55555606b5d0) = 18502
[pid 18502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18502] setpgid(0, 0)               = 0
[pid 18502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18502] write(3, "1000", 4)         = 4
[pid 18502] close(3)                    = 0
[pid 18502] memfd_create("syzkaller", 0) = 3
[pid 18502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18502] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18502] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18502] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18502] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18502] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18502] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18502] close(4)                    = 0
[pid 18502] close(3)                    = 0
[pid 18502] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18502] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18502] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18502] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18502] open("./bus", O_RDONLY)     = 3
[pid 18502] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18502] exit_group(0)               = ?
[pid 18502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18503
./strace-static-x86_64: Process 18503 attached
[pid 18503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18503] setpgid(0, 0)               = 0
[pid 18503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18503] write(3, "1000", 4)         = 4
[pid 18503] close(3)                    = 0
[pid 18503] memfd_create("syzkaller", 0) = 3
[pid 18503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18503] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18503] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18503] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18503] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18503] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18503] close(4)                    = 0
[pid 18503] close(3)                    = 0
[pid 18503] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18503] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18503] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18503] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18503] open("./bus", O_RDONLY)     = 3
[pid 18503] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18503] exit_group(0)               = ?
[pid 18503] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18503, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18504 attached
, child_tidptr=0x55555606b5d0) = 18504
[pid 18504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18504] setpgid(0, 0)               = 0
[pid 18504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18504] write(3, "1000", 4)         = 4
[pid 18504] close(3)                    = 0
[pid 18504] memfd_create("syzkaller", 0) = 3
[pid 18504] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18504] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18504] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18504] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18504] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18504] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18504] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18504] close(4)                    = 0
[pid 18504] close(3)                    = 0
[pid 18504] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18504] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18504] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18504] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18504] open("./bus", O_RDONLY)     = 3
[pid 18504] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18504] exit_group(0)               = ?
[pid 18504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18505
./strace-static-x86_64: Process 18505 attached
[pid 18505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18505] setpgid(0, 0)               = 0
[pid 18505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18505] write(3, "1000", 4)         = 4
[pid 18505] close(3)                    = 0
[pid 18505] memfd_create("syzkaller", 0) = 3
[pid 18505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18505] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18505] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18505] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18505] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18505] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18505] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18505] close(4)                    = 0
[pid 18505] close(3)                    = 0
[pid 18505] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18505] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18505] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18505] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18505] open("./bus", O_RDONLY)     = 3
[pid 18505] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18505] exit_group(0)               = ?
[pid 18505] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18505, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18506 attached
, child_tidptr=0x55555606b5d0) = 18506
[pid 18506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18506] setpgid(0, 0)               = 0
[pid 18506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18506] write(3, "1000", 4)         = 4
[pid 18506] close(3)                    = 0
[pid 18506] memfd_create("syzkaller", 0) = 3
[pid 18506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18506] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18506] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18506] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18506] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18506] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18506] close(4)                    = 0
[pid 18506] close(3)                    = 0
[pid 18506] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18506] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18506] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18506] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18506] open("./bus", O_RDONLY)     = 3
[pid 18506] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18506] exit_group(0)               = ?
[pid 18506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18507
./strace-static-x86_64: Process 18507 attached
[pid 18507] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18507] setpgid(0, 0)               = 0
[pid 18507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18507] write(3, "1000", 4)         = 4
[pid 18507] close(3)                    = 0
[pid 18507] memfd_create("syzkaller", 0) = 3
[pid 18507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18507] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18507] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18507] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18507] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18507] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18507] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18507] close(4)                    = 0
[pid 18507] close(3)                    = 0
[pid 18507] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18507] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18507] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18507] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18507] open("./bus", O_RDONLY)     = 3
[pid 18507] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18507] exit_group(0)               = ?
[pid 18507] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18507, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18508 attached
, child_tidptr=0x55555606b5d0) = 18508
[pid 18508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18508] setpgid(0, 0)               = 0
[pid 18508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18508] write(3, "1000", 4)         = 4
[pid 18508] close(3)                    = 0
[pid 18508] memfd_create("syzkaller", 0) = 3
[pid 18508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18508] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18508] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18508] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18508] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18508] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18508] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18508] close(4)                    = 0
[pid 18508] close(3)                    = 0
[pid 18508] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18508] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18508] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18508] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18508] open("./bus", O_RDONLY)     = 3
[pid 18508] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18508] exit_group(0)               = ?
[pid 18508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18509
./strace-static-x86_64: Process 18509 attached
[pid 18509] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18509] setpgid(0, 0)               = 0
[pid 18509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18509] write(3, "1000", 4)         = 4
[pid 18509] close(3)                    = 0
[pid 18509] memfd_create("syzkaller", 0) = 3
[pid 18509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18509] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18509] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18509] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18509] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18509] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18509] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18509] close(4)                    = 0
[pid 18509] close(3)                    = 0
[pid 18509] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18509] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18509] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18509] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18509] open("./bus", O_RDONLY)     = 3
[pid 18509] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18509] exit_group(0)               = ?
[pid 18509] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18509, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18510 attached
, child_tidptr=0x55555606b5d0) = 18510
[pid 18510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18510] setpgid(0, 0)               = 0
[pid 18510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18510] write(3, "1000", 4)         = 4
[pid 18510] close(3)                    = 0
[pid 18510] memfd_create("syzkaller", 0) = 3
[pid 18510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18510] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18510] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18510] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18510] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18510] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18510] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18510] close(4)                    = 0
[pid 18510] close(3)                    = 0
[pid 18510] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18510] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18510] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18510] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18510] open("./bus", O_RDONLY)     = 3
[pid 18510] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18510] exit_group(0)               = ?
[pid 18510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18511 attached
, child_tidptr=0x55555606b5d0) = 18511
[pid 18511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18511] setpgid(0, 0)               = 0
[pid 18511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18511] write(3, "1000", 4)         = 4
[pid 18511] close(3)                    = 0
[pid 18511] memfd_create("syzkaller", 0) = 3
[pid 18511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18511] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18511] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18511] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18511] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18511] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18511] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18511] close(4)                    = 0
[pid 18511] close(3)                    = 0
[pid 18511] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18511] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18511] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18511] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18511] open("./bus", O_RDONLY)     = 3
[pid 18511] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18511] exit_group(0)               = ?
[pid 18511] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18511, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18512
./strace-static-x86_64: Process 18512 attached
[pid 18512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18512] setpgid(0, 0)               = 0
[pid 18512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18512] write(3, "1000", 4)         = 4
[pid 18512] close(3)                    = 0
[pid 18512] memfd_create("syzkaller", 0) = 3
[pid 18512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18512] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18512] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18512] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18512] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18512] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18512] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18512] close(4)                    = 0
[pid 18512] close(3)                    = 0
[pid 18512] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18512] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18512] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18512] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18512] open("./bus", O_RDONLY)     = 3
[pid 18512] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18512] exit_group(0)               = ?
[pid 18512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18513
./strace-static-x86_64: Process 18513 attached
[pid 18513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18513] setpgid(0, 0)               = 0
[pid 18513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18513] write(3, "1000", 4)         = 4
[pid 18513] close(3)                    = 0
[pid 18513] memfd_create("syzkaller", 0) = 3
[pid 18513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18513] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18513] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18513] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18513] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18513] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18513] close(4)                    = 0
[pid 18513] close(3)                    = 0
[pid 18513] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18513] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18513] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18513] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18513] open("./bus", O_RDONLY)     = 3
[pid 18513] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18513] exit_group(0)               = ?
[pid 18513] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18513, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18514
./strace-static-x86_64: Process 18514 attached
[pid 18514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18514] setpgid(0, 0)               = 0
[pid 18514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18514] write(3, "1000", 4)         = 4
[pid 18514] close(3)                    = 0
[pid 18514] memfd_create("syzkaller", 0) = 3
[pid 18514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18514] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18514] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18514] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18514] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18514] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18514] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18514] close(4)                    = 0
[pid 18514] close(3)                    = 0
[pid 18514] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18514] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18514] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18514] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18514] open("./bus", O_RDONLY)     = 3
[pid 18514] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18514] exit_group(0)               = ?
[pid 18514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18514, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18515
./strace-static-x86_64: Process 18515 attached
[pid 18515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18515] setpgid(0, 0)               = 0
[pid 18515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18515] write(3, "1000", 4)         = 4
[pid 18515] close(3)                    = 0
[pid 18515] memfd_create("syzkaller", 0) = 3
[pid 18515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18515] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18515] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18515] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18515] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18515] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18515] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18515] close(4)                    = 0
[pid 18515] close(3)                    = 0
[pid 18515] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18515] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18515] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18515] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18515] open("./bus", O_RDONLY)     = 3
[pid 18515] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18515] exit_group(0)               = ?
[pid 18515] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18515, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18516
./strace-static-x86_64: Process 18516 attached
[pid 18516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18516] setpgid(0, 0)               = 0
[pid 18516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18516] write(3, "1000", 4)         = 4
[pid 18516] close(3)                    = 0
[pid 18516] memfd_create("syzkaller", 0) = 3
[pid 18516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18516] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18516] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18516] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18516] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18516] close(4)                    = 0
[pid 18516] close(3)                    = 0
[pid 18516] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18516] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18516] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18516] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18516] open("./bus", O_RDONLY)     = 3
[pid 18516] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18516] exit_group(0)               = ?
[pid 18516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18517 attached
, child_tidptr=0x55555606b5d0) = 18517
[pid 18517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18517] setpgid(0, 0)               = 0
[pid 18517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18517] write(3, "1000", 4)         = 4
[pid 18517] close(3)                    = 0
[pid 18517] memfd_create("syzkaller", 0) = 3
[pid 18517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18517] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18517] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18517] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18517] close(4)                    = 0
[pid 18517] close(3)                    = 0
[pid 18517] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18517] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18517] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18517] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18517] open("./bus", O_RDONLY)     = 3
[pid 18517] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18517] exit_group(0)               = ?
[pid 18517] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18517, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18518 attached
, child_tidptr=0x55555606b5d0) = 18518
[pid 18518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18518] setpgid(0, 0)               = 0
[pid 18518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18518] write(3, "1000", 4)         = 4
[pid 18518] close(3)                    = 0
[pid 18518] memfd_create("syzkaller", 0) = 3
[pid 18518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18518] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18518] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18518] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18518] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18518] close(4)                    = 0
[pid 18518] close(3)                    = 0
[pid 18518] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18518] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18518] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18518] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18518] open("./bus", O_RDONLY)     = 3
[pid 18518] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18518] exit_group(0)               = ?
[pid 18518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18519 attached
, child_tidptr=0x55555606b5d0) = 18519
[pid 18519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18519] setpgid(0, 0)               = 0
[pid 18519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18519] write(3, "1000", 4)         = 4
[pid 18519] close(3)                    = 0
[pid 18519] memfd_create("syzkaller", 0) = 3
[pid 18519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18519] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18519] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18519] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18519] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18519] close(4)                    = 0
[pid 18519] close(3)                    = 0
[pid 18519] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18519] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18519] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18519] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18519] open("./bus", O_RDONLY)     = 3
[pid 18519] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18519] exit_group(0)               = ?
[pid 18519] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18519, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18520 attached
, child_tidptr=0x55555606b5d0) = 18520
[pid 18520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18520] setpgid(0, 0)               = 0
[pid 18520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18520] write(3, "1000", 4)         = 4
[pid 18520] close(3)                    = 0
[pid 18520] memfd_create("syzkaller", 0) = 3
[pid 18520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18520] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18520] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18520] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18520] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18520] close(4)                    = 0
[pid 18520] close(3)                    = 0
[pid 18520] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18520] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18520] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18520] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18520] open("./bus", O_RDONLY)     = 3
[pid 18520] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18520] exit_group(0)               = ?
[pid 18520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18521
./strace-static-x86_64: Process 18521 attached
[pid 18521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18521] setpgid(0, 0)               = 0
[pid 18521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18521] write(3, "1000", 4)         = 4
[pid 18521] close(3)                    = 0
[pid 18521] memfd_create("syzkaller", 0) = 3
[pid 18521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18521] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18521] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18521] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18521] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18521] close(4)                    = 0
[pid 18521] close(3)                    = 0
[pid 18521] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18521] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18521] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18521] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18521] open("./bus", O_RDONLY)     = 3
[pid 18521] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18521] exit_group(0)               = ?
[pid 18521] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18521, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18522
./strace-static-x86_64: Process 18522 attached
[pid 18522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18522] setpgid(0, 0)               = 0
[pid 18522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18522] write(3, "1000", 4)         = 4
[pid 18522] close(3)                    = 0
[pid 18522] memfd_create("syzkaller", 0) = 3
[pid 18522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18522] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18522] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18522] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18522] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18522] close(4)                    = 0
[pid 18522] close(3)                    = 0
[pid 18522] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18522] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18522] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18522] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18522] open("./bus", O_RDONLY)     = 3
[pid 18522] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18522] exit_group(0)               = ?
[pid 18522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18523 attached
, child_tidptr=0x55555606b5d0) = 18523
[pid 18523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18523] setpgid(0, 0)               = 0
[pid 18523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18523] write(3, "1000", 4)         = 4
[pid 18523] close(3)                    = 0
[pid 18523] memfd_create("syzkaller", 0) = 3
[pid 18523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18523] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18523] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18523] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18523] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18523] close(4)                    = 0
[pid 18523] close(3)                    = 0
[pid 18523] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18523] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18523] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18523] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18523] open("./bus", O_RDONLY)     = 3
[pid 18523] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18523] exit_group(0)               = ?
[pid 18523] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18523, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18524
./strace-static-x86_64: Process 18524 attached
[pid 18524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18524] setpgid(0, 0)               = 0
[pid 18524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18524] write(3, "1000", 4)         = 4
[pid 18524] close(3)                    = 0
[pid 18524] memfd_create("syzkaller", 0) = 3
[pid 18524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18524] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18524] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18524] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18524] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18524] close(4)                    = 0
[pid 18524] close(3)                    = 0
[pid 18524] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18524] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18524] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18524] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18524] open("./bus", O_RDONLY)     = 3
[pid 18524] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18524] exit_group(0)               = ?
[pid 18524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18524, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18525
./strace-static-x86_64: Process 18525 attached
[pid 18525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18525] setpgid(0, 0)               = 0
[pid 18525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18525] write(3, "1000", 4)         = 4
[pid 18525] close(3)                    = 0
[pid 18525] memfd_create("syzkaller", 0) = 3
[pid 18525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18525] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18525] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18525] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18525] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18525] close(4)                    = 0
[pid 18525] close(3)                    = 0
[pid 18525] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18525] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18525] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18525] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18525] open("./bus", O_RDONLY)     = 3
[pid 18525] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18525] exit_group(0)               = ?
[pid 18525] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18525, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18526
./strace-static-x86_64: Process 18526 attached
[pid 18526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18526] setpgid(0, 0)               = 0
[pid 18526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18526] write(3, "1000", 4)         = 4
[pid 18526] close(3)                    = 0
[pid 18526] memfd_create("syzkaller", 0) = 3
[pid 18526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18526] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18526] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18526] close(4)                    = 0
[pid 18526] close(3)                    = 0
[pid 18526] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18526] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18526] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18526] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18526] open("./bus", O_RDONLY)     = 3
[pid 18526] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18526] exit_group(0)               = ?
[pid 18526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18527 attached
, child_tidptr=0x55555606b5d0) = 18527
[pid 18527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18527] setpgid(0, 0)               = 0
[pid 18527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18527] write(3, "1000", 4)         = 4
[pid 18527] close(3)                    = 0
[pid 18527] memfd_create("syzkaller", 0) = 3
[pid 18527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18527] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18527] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18527] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18527] close(4)                    = 0
[pid 18527] close(3)                    = 0
[pid 18527] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18527] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18527] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18527] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18527] open("./bus", O_RDONLY)     = 3
[pid 18527] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18527] exit_group(0)               = ?
[pid 18527] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18527, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18528 attached
, child_tidptr=0x55555606b5d0) = 18528
[pid 18528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18528] setpgid(0, 0)               = 0
[pid 18528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18528] write(3, "1000", 4)         = 4
[pid 18528] close(3)                    = 0
[pid 18528] memfd_create("syzkaller", 0) = 3
[pid 18528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18528] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18528] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18528] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18528] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18528] close(4)                    = 0
[pid 18528] close(3)                    = 0
[pid 18528] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18528] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18528] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18528] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18528] open("./bus", O_RDONLY)     = 3
[pid 18528] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18528] exit_group(0)               = ?
[pid 18528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18529
./strace-static-x86_64: Process 18529 attached
[pid 18529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18529] setpgid(0, 0)               = 0
[pid 18529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18529] write(3, "1000", 4)         = 4
[pid 18529] close(3)                    = 0
[pid 18529] memfd_create("syzkaller", 0) = 3
[pid 18529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18529] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18529] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18529] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18529] close(4)                    = 0
[pid 18529] close(3)                    = 0
[pid 18529] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18529] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18529] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18529] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18529] open("./bus", O_RDONLY)     = 3
[pid 18529] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18529] exit_group(0)               = ?
[pid 18529] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18529, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18530
./strace-static-x86_64: Process 18530 attached
[pid 18530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18530] setpgid(0, 0)               = 0
[pid 18530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18530] write(3, "1000", 4)         = 4
[pid 18530] close(3)                    = 0
[pid 18530] memfd_create("syzkaller", 0) = 3
[pid 18530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18530] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18530] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18530] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18530] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18530] close(4)                    = 0
[pid 18530] close(3)                    = 0
[pid 18530] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18530] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18530] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18530] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18530] open("./bus", O_RDONLY)     = 3
[pid 18530] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18530] exit_group(0)               = ?
[pid 18530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18530, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18531
./strace-static-x86_64: Process 18531 attached
[pid 18531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18531] setpgid(0, 0)               = 0
[pid 18531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18531] write(3, "1000", 4)         = 4
[pid 18531] close(3)                    = 0
[pid 18531] memfd_create("syzkaller", 0) = 3
[pid 18531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18531] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18531] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18531] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18531] close(4)                    = 0
[pid 18531] close(3)                    = 0
[pid 18531] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18531] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18531] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18531] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18531] open("./bus", O_RDONLY)     = 3
[pid 18531] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18531] exit_group(0)               = ?
[pid 18531] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18531, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18532
./strace-static-x86_64: Process 18532 attached
[pid 18532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18532] setpgid(0, 0)               = 0
[pid 18532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18532] write(3, "1000", 4)         = 4
[pid 18532] close(3)                    = 0
[pid 18532] memfd_create("syzkaller", 0) = 3
[pid 18532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18532] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18532] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18532] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18532] close(4)                    = 0
[pid 18532] close(3)                    = 0
[pid 18532] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18532] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18532] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18532] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18532] open("./bus", O_RDONLY)     = 3
[pid 18532] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18532] exit_group(0)               = ?
[pid 18532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18533
./strace-static-x86_64: Process 18533 attached
[pid 18533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18533] setpgid(0, 0)               = 0
[pid 18533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18533] write(3, "1000", 4)         = 4
[pid 18533] close(3)                    = 0
[pid 18533] memfd_create("syzkaller", 0) = 3
[pid 18533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18533] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18533] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18533] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18533] close(4)                    = 0
[pid 18533] close(3)                    = 0
[pid 18533] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18533] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18533] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18533] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18533] open("./bus", O_RDONLY)     = 3
[pid 18533] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18533] exit_group(0)               = ?
[pid 18533] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18533, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18534 attached
, child_tidptr=0x55555606b5d0) = 18534
[pid 18534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18534] setpgid(0, 0)               = 0
[pid 18534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18534] write(3, "1000", 4)         = 4
[pid 18534] close(3)                    = 0
[pid 18534] memfd_create("syzkaller", 0) = 3
[pid 18534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18534] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18534] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18534] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18534] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18534] close(4)                    = 0
[pid 18534] close(3)                    = 0
[pid 18534] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18534] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18534] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18534] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18534] open("./bus", O_RDONLY)     = 3
[pid 18534] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18534] exit_group(0)               = ?
[pid 18534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18535 attached
, child_tidptr=0x55555606b5d0) = 18535
[pid 18535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18535] setpgid(0, 0)               = 0
[pid 18535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18535] write(3, "1000", 4)         = 4
[pid 18535] close(3)                    = 0
[pid 18535] memfd_create("syzkaller", 0) = 3
[pid 18535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18535] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18535] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18535] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18535] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18535] close(4)                    = 0
[pid 18535] close(3)                    = 0
[pid 18535] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18535] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18535] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18535] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18535] open("./bus", O_RDONLY)     = 3
[pid 18535] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18535] exit_group(0)               = ?
[pid 18535] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18535, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18536 attached
, child_tidptr=0x55555606b5d0) = 18536
[pid 18536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18536] setpgid(0, 0)               = 0
[pid 18536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18536] write(3, "1000", 4)         = 4
[pid 18536] close(3)                    = 0
[pid 18536] memfd_create("syzkaller", 0) = 3
[pid 18536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18536] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18536] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18536] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18536] close(4)                    = 0
[pid 18536] close(3)                    = 0
[pid 18536] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18536] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18536] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18536] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18536] open("./bus", O_RDONLY)     = 3
[pid 18536] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18536] exit_group(0)               = ?
[pid 18536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18537 attached
, child_tidptr=0x55555606b5d0) = 18537
[pid 18537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18537] setpgid(0, 0)               = 0
[pid 18537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18537] write(3, "1000", 4)         = 4
[pid 18537] close(3)                    = 0
[pid 18537] memfd_create("syzkaller", 0) = 3
[pid 18537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18537] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18537] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18537] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18537] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18537] close(4)                    = 0
[pid 18537] close(3)                    = 0
[pid 18537] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18537] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18537] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18537] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18537] open("./bus", O_RDONLY)     = 3
[pid 18537] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18537] exit_group(0)               = ?
[pid 18537] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18537, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18538
./strace-static-x86_64: Process 18538 attached
[pid 18538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18538] setpgid(0, 0)               = 0
[pid 18538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18538] write(3, "1000", 4)         = 4
[pid 18538] close(3)                    = 0
[pid 18538] memfd_create("syzkaller", 0) = 3
[pid 18538] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18538] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18538] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18538] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18538] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18538] close(4)                    = 0
[pid 18538] close(3)                    = 0
[pid 18538] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18538] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18538] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18538] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18538] open("./bus", O_RDONLY)     = 3
[pid 18538] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18538] exit_group(0)               = ?
[pid 18538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18539
./strace-static-x86_64: Process 18539 attached
[pid 18539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18539] setpgid(0, 0)               = 0
[pid 18539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18539] write(3, "1000", 4)         = 4
[pid 18539] close(3)                    = 0
[pid 18539] memfd_create("syzkaller", 0) = 3
[pid 18539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18539] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18539] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18539] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18539] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18539] close(4)                    = 0
[pid 18539] close(3)                    = 0
[pid 18539] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18539] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18539] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18539] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18539] open("./bus", O_RDONLY)     = 3
[pid 18539] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18539] exit_group(0)               = ?
[pid 18539] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18539, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18540 attached
 <unfinished ...>
[pid 18540] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18540
[pid 18540] <... prctl resumed>)        = 0
[pid 18540] setpgid(0, 0)               = 0
[pid 18540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18540] write(3, "1000", 4)         = 4
[pid 18540] close(3)                    = 0
[pid 18540] memfd_create("syzkaller", 0) = 3
[pid 18540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18540] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18540] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18540] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18540] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18540] close(4)                    = 0
[pid 18540] close(3)                    = 0
[pid 18540] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18540] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18540] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18540] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18540] open("./bus", O_RDONLY)     = 3
[pid 18540] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18540] exit_group(0)               = ?
[pid 18540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18541
./strace-static-x86_64: Process 18541 attached
[pid 18541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18541] setpgid(0, 0)               = 0
[pid 18541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18541] write(3, "1000", 4)         = 4
[pid 18541] close(3)                    = 0
[pid 18541] memfd_create("syzkaller", 0) = 3
[pid 18541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18541] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18541] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18541] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18541] close(4)                    = 0
[pid 18541] close(3)                    = 0
[pid 18541] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18541] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18541] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18541] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18541] open("./bus", O_RDONLY)     = 3
[pid 18541] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18541] exit_group(0)               = ?
[pid 18541] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18541, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18542
./strace-static-x86_64: Process 18542 attached
[pid 18542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18542] setpgid(0, 0)               = 0
[pid 18542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18542] write(3, "1000", 4)         = 4
[pid 18542] close(3)                    = 0
[pid 18542] memfd_create("syzkaller", 0) = 3
[pid 18542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18542] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18542] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18542] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18542] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18542] close(4)                    = 0
[pid 18542] close(3)                    = 0
[pid 18542] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18542] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18542] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18542] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18542] open("./bus", O_RDONLY)     = 3
[pid 18542] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18542] exit_group(0)               = ?
[pid 18542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18543 attached
, child_tidptr=0x55555606b5d0) = 18543
[pid 18543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18543] setpgid(0, 0)               = 0
[pid 18543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18543] write(3, "1000", 4)         = 4
[pid 18543] close(3)                    = 0
[pid 18543] memfd_create("syzkaller", 0) = 3
[pid 18543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18543] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18543] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18543] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18543] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18543] close(4)                    = 0
[pid 18543] close(3)                    = 0
[pid 18543] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18543] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18543] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18543] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18543] open("./bus", O_RDONLY)     = 3
[pid 18543] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18543] exit_group(0)               = ?
[pid 18543] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18543, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18544 attached
, child_tidptr=0x55555606b5d0) = 18544
[pid 18544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18544] setpgid(0, 0)               = 0
[pid 18544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18544] write(3, "1000", 4)         = 4
[pid 18544] close(3)                    = 0
[pid 18544] memfd_create("syzkaller", 0) = 3
[pid 18544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18544] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18544] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18544] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18544] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18544] close(4)                    = 0
[pid 18544] close(3)                    = 0
[pid 18544] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18544] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18544] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18544] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18544] open("./bus", O_RDONLY)     = 3
[pid 18544] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18544] exit_group(0)               = ?
[pid 18544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18545
./strace-static-x86_64: Process 18545 attached
[pid 18545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18545] setpgid(0, 0)               = 0
[pid 18545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18545] write(3, "1000", 4)         = 4
[pid 18545] close(3)                    = 0
[pid 18545] memfd_create("syzkaller", 0) = 3
[pid 18545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18545] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18545] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18545] close(4)                    = 0
[pid 18545] close(3)                    = 0
[pid 18545] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18545] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18545] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18545] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18545] open("./bus", O_RDONLY)     = 3
[pid 18545] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18545] exit_group(0)               = ?
[pid 18545] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18545, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18546 attached
, child_tidptr=0x55555606b5d0) = 18546
[pid 18546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18546] setpgid(0, 0)               = 0
[pid 18546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18546] write(3, "1000", 4)         = 4
[pid 18546] close(3)                    = 0
[pid 18546] memfd_create("syzkaller", 0) = 3
[pid 18546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18546] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18546] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18546] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18546] close(4)                    = 0
[pid 18546] close(3)                    = 0
[pid 18546] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18546] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18546] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18546] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18546] open("./bus", O_RDONLY)     = 3
[pid 18546] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18546] exit_group(0)               = ?
[pid 18546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18547
./strace-static-x86_64: Process 18547 attached
[pid 18547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18547] setpgid(0, 0)               = 0
[pid 18547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18547] write(3, "1000", 4)         = 4
[pid 18547] close(3)                    = 0
[pid 18547] memfd_create("syzkaller", 0) = 3
[pid 18547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18547] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18547] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18547] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18547] close(4)                    = 0
[pid 18547] close(3)                    = 0
[pid 18547] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18547] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18547] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18547] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18547] open("./bus", O_RDONLY)     = 3
[pid 18547] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18547] exit_group(0)               = ?
[pid 18547] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18547, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18548 attached
, child_tidptr=0x55555606b5d0) = 18548
[pid 18548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18548] setpgid(0, 0)               = 0
[pid 18548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18548] write(3, "1000", 4)         = 4
[pid 18548] close(3)                    = 0
[pid 18548] memfd_create("syzkaller", 0) = 3
[pid 18548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18548] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18548] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18548] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18548] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18548] close(4)                    = 0
[pid 18548] close(3)                    = 0
[pid 18548] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18548] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18548] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18548] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18548] open("./bus", O_RDONLY)     = 3
[pid 18548] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18548] exit_group(0)               = ?
[pid 18548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18549 attached
 <unfinished ...>
[pid 18549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18549] setpgid(0, 0)               = 0
[pid 18549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18549
[pid 18549] <... openat resumed>)       = 3
[pid 18549] write(3, "1000", 4)         = 4
[pid 18549] close(3)                    = 0
[pid 18549] memfd_create("syzkaller", 0) = 3
[pid 18549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18549] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18549] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18549] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18549] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18549] close(4)                    = 0
[pid 18549] close(3)                    = 0
[pid 18549] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18549] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18549] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18549] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18549] open("./bus", O_RDONLY)     = 3
[pid 18549] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18549] exit_group(0)               = ?
[pid 18549] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18549, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18550
./strace-static-x86_64: Process 18550 attached
[pid 18550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18550] setpgid(0, 0)               = 0
[pid 18550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18550] write(3, "1000", 4)         = 4
[pid 18550] close(3)                    = 0
[pid 18550] memfd_create("syzkaller", 0) = 3
[pid 18550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18550] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18550] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18550] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18550] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18550] close(4)                    = 0
[pid 18550] close(3)                    = 0
[pid 18550] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18550] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18550] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18550] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18550] open("./bus", O_RDONLY)     = 3
[pid 18550] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18550] exit_group(0)               = ?
[pid 18550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18551 attached
, child_tidptr=0x55555606b5d0) = 18551
[pid 18551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18551] setpgid(0, 0)               = 0
[pid 18551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18551] write(3, "1000", 4)         = 4
[pid 18551] close(3)                    = 0
[pid 18551] memfd_create("syzkaller", 0) = 3
[pid 18551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18551] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18551] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18551] close(4)                    = 0
[pid 18551] close(3)                    = 0
[pid 18551] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18551] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18551] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18551] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18551] open("./bus", O_RDONLY)     = 3
[pid 18551] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18551] exit_group(0)               = ?
[pid 18551] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18551, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18552
./strace-static-x86_64: Process 18552 attached
[pid 18552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18552] setpgid(0, 0)               = 0
[pid 18552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18552] write(3, "1000", 4)         = 4
[pid 18552] close(3)                    = 0
[pid 18552] memfd_create("syzkaller", 0) = 3
[pid 18552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18552] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18552] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18552] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18552] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18552] close(4)                    = 0
[pid 18552] close(3)                    = 0
[pid 18552] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18552] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18552] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18552] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18552] open("./bus", O_RDONLY)     = 3
[pid 18552] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18552] exit_group(0)               = ?
[pid 18552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18553 attached
, child_tidptr=0x55555606b5d0) = 18553
[pid 18553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18553] setpgid(0, 0)               = 0
[pid 18553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18553] write(3, "1000", 4)         = 4
[pid 18553] close(3)                    = 0
[pid 18553] memfd_create("syzkaller", 0) = 3
[pid 18553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18553] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18553] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18553] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18553] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18553] close(4)                    = 0
[pid 18553] close(3)                    = 0
[pid 18553] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18553] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18553] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18553] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18553] open("./bus", O_RDONLY)     = 3
[pid 18553] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18553] exit_group(0)               = ?
[pid 18553] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18553, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18554
./strace-static-x86_64: Process 18554 attached
[pid 18554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18554] setpgid(0, 0)               = 0
[pid 18554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18554] write(3, "1000", 4)         = 4
[pid 18554] close(3)                    = 0
[pid 18554] memfd_create("syzkaller", 0) = 3
[pid 18554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18554] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18554] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18554] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18554] close(4)                    = 0
[pid 18554] close(3)                    = 0
[pid 18554] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18554] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18554] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18554] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18554] open("./bus", O_RDONLY)     = 3
[pid 18554] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18554] exit_group(0)               = ?
[pid 18554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18555
./strace-static-x86_64: Process 18555 attached
[pid 18555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18555] setpgid(0, 0)               = 0
[pid 18555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18555] write(3, "1000", 4)         = 4
[pid 18555] close(3)                    = 0
[pid 18555] memfd_create("syzkaller", 0) = 3
[pid 18555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18555] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18555] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18555] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18555] close(4)                    = 0
[pid 18555] close(3)                    = 0
[pid 18555] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18555] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18555] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18555] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18555] open("./bus", O_RDONLY)     = 3
[pid 18555] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18555] exit_group(0)               = ?
[pid 18555] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18555, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18556
./strace-static-x86_64: Process 18556 attached
[pid 18556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18556] setpgid(0, 0)               = 0
[pid 18556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18556] write(3, "1000", 4)         = 4
[pid 18556] close(3)                    = 0
[pid 18556] memfd_create("syzkaller", 0) = 3
[pid 18556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18556] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18556] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18556] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18556] close(4)                    = 0
[pid 18556] close(3)                    = 0
[pid 18556] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18556] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18556] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18556] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18556] open("./bus", O_RDONLY)     = 3
[pid 18556] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18556] exit_group(0)               = ?
[pid 18556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18556, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18557 attached
, child_tidptr=0x55555606b5d0) = 18557
[pid 18557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18557] setpgid(0, 0)               = 0
[pid 18557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18557] write(3, "1000", 4)         = 4
[pid 18557] close(3)                    = 0
[pid 18557] memfd_create("syzkaller", 0) = 3
[pid 18557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18557] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18557] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18557] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18557] close(4)                    = 0
[pid 18557] close(3)                    = 0
[pid 18557] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18557] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18557] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18557] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18557] open("./bus", O_RDONLY)     = 3
[pid 18557] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18557] exit_group(0)               = ?
[pid 18557] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18557, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18558
./strace-static-x86_64: Process 18558 attached
[pid 18558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18558] setpgid(0, 0)               = 0
[pid 18558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18558] write(3, "1000", 4)         = 4
[pid 18558] close(3)                    = 0
[pid 18558] memfd_create("syzkaller", 0) = 3
[pid 18558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18558] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18558] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18558] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18558] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18558] close(4)                    = 0
[pid 18558] close(3)                    = 0
[pid 18558] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18558] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18558] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18558] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18558] open("./bus", O_RDONLY)     = 3
[pid 18558] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18558] exit_group(0)               = ?
[pid 18558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18559 attached
, child_tidptr=0x55555606b5d0) = 18559
[pid 18559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18559] setpgid(0, 0)               = 0
[pid 18559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18559] write(3, "1000", 4)         = 4
[pid 18559] close(3)                    = 0
[pid 18559] memfd_create("syzkaller", 0) = 3
[pid 18559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18559] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18559] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18559] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18559] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18559] close(4)                    = 0
[pid 18559] close(3)                    = 0
[pid 18559] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18559] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18559] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18559] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18559] open("./bus", O_RDONLY)     = 3
[pid 18559] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18559] exit_group(0)               = ?
[pid 18559] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18559, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18560
./strace-static-x86_64: Process 18560 attached
[pid 18560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18560] setpgid(0, 0)               = 0
[pid 18560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18560] write(3, "1000", 4)         = 4
[pid 18560] close(3)                    = 0
[pid 18560] memfd_create("syzkaller", 0) = 3
[pid 18560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18560] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18560] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18560] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18560] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18560] close(4)                    = 0
[pid 18560] close(3)                    = 0
[pid 18560] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18560] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18560] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18560] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18560] open("./bus", O_RDONLY)     = 3
[pid 18560] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18560] exit_group(0)               = ?
[pid 18560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18561
./strace-static-x86_64: Process 18561 attached
[pid 18561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18561] setpgid(0, 0)               = 0
[pid 18561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18561] write(3, "1000", 4)         = 4
[pid 18561] close(3)                    = 0
[pid 18561] memfd_create("syzkaller", 0) = 3
[pid 18561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18561] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18561] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18561] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18561] close(4)                    = 0
[pid 18561] close(3)                    = 0
[pid 18561] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18561] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18561] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18561] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18561] open("./bus", O_RDONLY)     = 3
[pid 18561] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18561] exit_group(0)               = ?
[pid 18561] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18561, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18562 attached
, child_tidptr=0x55555606b5d0) = 18562
[pid 18562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18562] setpgid(0, 0)               = 0
[pid 18562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18562] write(3, "1000", 4)         = 4
[pid 18562] close(3)                    = 0
[pid 18562] memfd_create("syzkaller", 0) = 3
[pid 18562] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18562] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18562] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18562] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18562] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18562] close(4)                    = 0
[pid 18562] close(3)                    = 0
[pid 18562] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18562] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18562] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18562] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18562] open("./bus", O_RDONLY)     = 3
[pid 18562] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18562] exit_group(0)               = ?
[pid 18562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18563
./strace-static-x86_64: Process 18563 attached
[pid 18563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18563] setpgid(0, 0)               = 0
[pid 18563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18563] write(3, "1000", 4)         = 4
[pid 18563] close(3)                    = 0
[pid 18563] memfd_create("syzkaller", 0) = 3
[pid 18563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18563] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18563] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18563] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18563] close(4)                    = 0
[pid 18563] close(3)                    = 0
[pid 18563] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18563] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18563] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18563] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18563] open("./bus", O_RDONLY)     = 3
[pid 18563] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18563] exit_group(0)               = ?
[pid 18563] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18563, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18564 attached
, child_tidptr=0x55555606b5d0) = 18564
[pid 18564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18564] setpgid(0, 0)               = 0
[pid 18564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18564] write(3, "1000", 4)         = 4
[pid 18564] close(3)                    = 0
[pid 18564] memfd_create("syzkaller", 0) = 3
[pid 18564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18564] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18564] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18564] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18564] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18564] close(4)                    = 0
[pid 18564] close(3)                    = 0
[pid 18564] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18564] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18564] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18564] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18564] open("./bus", O_RDONLY)     = 3
[pid 18564] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18564] exit_group(0)               = ?
[pid 18564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18565
./strace-static-x86_64: Process 18565 attached
[pid 18565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18565] setpgid(0, 0)               = 0
[pid 18565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18565] write(3, "1000", 4)         = 4
[pid 18565] close(3)                    = 0
[pid 18565] memfd_create("syzkaller", 0) = 3
[pid 18565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18565] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18565] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18565] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18565] close(4)                    = 0
[pid 18565] close(3)                    = 0
[pid 18565] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18565] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18565] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18565] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18565] open("./bus", O_RDONLY)     = 3
[pid 18565] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18565] exit_group(0)               = ?
[pid 18565] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18565, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18566 attached
, child_tidptr=0x55555606b5d0) = 18566
[pid 18566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18566] setpgid(0, 0)               = 0
[pid 18566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18566] write(3, "1000", 4)         = 4
[pid 18566] close(3)                    = 0
[pid 18566] memfd_create("syzkaller", 0) = 3
[pid 18566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18566] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18566] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18566] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18566] close(4)                    = 0
[pid 18566] close(3)                    = 0
[pid 18566] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18566] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18566] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18566] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18566] open("./bus", O_RDONLY)     = 3
[pid 18566] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18566] exit_group(0)               = ?
[pid 18566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18566, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18567 attached
, child_tidptr=0x55555606b5d0) = 18567
[pid 18567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18567] setpgid(0, 0)               = 0
[pid 18567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18567] write(3, "1000", 4)         = 4
[pid 18567] close(3)                    = 0
[pid 18567] memfd_create("syzkaller", 0) = 3
[pid 18567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18567] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18567] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18567] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18567] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18567] close(4)                    = 0
[pid 18567] close(3)                    = 0
[pid 18567] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18567] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18567] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18567] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18567] open("./bus", O_RDONLY)     = 3
[pid 18567] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18567] exit_group(0)               = ?
[pid 18567] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18567, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18568 attached
, child_tidptr=0x55555606b5d0) = 18568
[pid 18568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18568] setpgid(0, 0)               = 0
[pid 18568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18568] write(3, "1000", 4)         = 4
[pid 18568] close(3)                    = 0
[pid 18568] memfd_create("syzkaller", 0) = 3
[pid 18568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18568] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18568] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18568] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18568] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18568] close(4)                    = 0
[pid 18568] close(3)                    = 0
[pid 18568] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18568] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18568] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18568] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18568] open("./bus", O_RDONLY)     = 3
[pid 18568] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18568] exit_group(0)               = ?
[pid 18568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18569
./strace-static-x86_64: Process 18569 attached
[pid 18569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18569] setpgid(0, 0)               = 0
[pid 18569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18569] write(3, "1000", 4)         = 4
[pid 18569] close(3)                    = 0
[pid 18569] memfd_create("syzkaller", 0) = 3
[pid 18569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18569] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18569] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18569] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18569] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18569] close(4)                    = 0
[pid 18569] close(3)                    = 0
[pid 18569] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18569] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18569] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18569] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18569] open("./bus", O_RDONLY)     = 3
[pid 18569] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18569] exit_group(0)               = ?
[pid 18569] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18569, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18570
./strace-static-x86_64: Process 18570 attached
[pid 18570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18570] setpgid(0, 0)               = 0
[pid 18570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18570] write(3, "1000", 4)         = 4
[pid 18570] close(3)                    = 0
[pid 18570] memfd_create("syzkaller", 0) = 3
[pid 18570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18570] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18570] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18570] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18570] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18570] close(4)                    = 0
[pid 18570] close(3)                    = 0
[pid 18570] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18570] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18570] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18570] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18570] open("./bus", O_RDONLY)     = 3
[pid 18570] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18570] exit_group(0)               = ?
[pid 18570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18571
./strace-static-x86_64: Process 18571 attached
[pid 18571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18571] setpgid(0, 0)               = 0
[pid 18571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18571] write(3, "1000", 4)         = 4
[pid 18571] close(3)                    = 0
[pid 18571] memfd_create("syzkaller", 0) = 3
[pid 18571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18571] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18571] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18571] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18571] close(4)                    = 0
[pid 18571] close(3)                    = 0
[pid 18571] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18571] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18571] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18571] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18571] open("./bus", O_RDONLY)     = 3
[pid 18571] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18571] exit_group(0)               = ?
[pid 18571] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18571, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18572 attached
, child_tidptr=0x55555606b5d0) = 18572
[pid 18572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18572] setpgid(0, 0)               = 0
[pid 18572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18572] write(3, "1000", 4)         = 4
[pid 18572] close(3)                    = 0
[pid 18572] memfd_create("syzkaller", 0) = 3
[pid 18572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18572] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18572] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18572] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18572] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18572] close(4)                    = 0
[pid 18572] close(3)                    = 0
[pid 18572] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18572] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18572] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18572] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18572] open("./bus", O_RDONLY)     = 3
[pid 18572] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18572] exit_group(0)               = ?
[pid 18572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18573 attached
, child_tidptr=0x55555606b5d0) = 18573
[pid 18573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18573] setpgid(0, 0)               = 0
[pid 18573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18573] write(3, "1000", 4)         = 4
[pid 18573] close(3)                    = 0
[pid 18573] memfd_create("syzkaller", 0) = 3
[pid 18573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18573] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18573] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18573] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18573] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18573] close(4)                    = 0
[pid 18573] close(3)                    = 0
[pid 18573] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18573] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18573] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18573] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18573] open("./bus", O_RDONLY)     = 3
[pid 18573] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18573] exit_group(0)               = ?
[pid 18573] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18573, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18574 attached
, child_tidptr=0x55555606b5d0) = 18574
[pid 18574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18574] setpgid(0, 0)               = 0
[pid 18574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18574] write(3, "1000", 4)         = 4
[pid 18574] close(3)                    = 0
[pid 18574] memfd_create("syzkaller", 0) = 3
[pid 18574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18574] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18574] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18574] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18574] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18574] close(4)                    = 0
[pid 18574] close(3)                    = 0
[pid 18574] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18574] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18574] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18574] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18574] open("./bus", O_RDONLY)     = 3
[pid 18574] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18574] exit_group(0)               = ?
[pid 18574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18575 attached
, child_tidptr=0x55555606b5d0) = 18575
[pid 18575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18575] setpgid(0, 0)               = 0
[pid 18575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18575] write(3, "1000", 4)         = 4
[pid 18575] close(3)                    = 0
[pid 18575] memfd_create("syzkaller", 0) = 3
[pid 18575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18575] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18575] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18575] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18575] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18575] close(4)                    = 0
[pid 18575] close(3)                    = 0
[pid 18575] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18575] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18575] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18575] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18575] open("./bus", O_RDONLY)     = 3
[pid 18575] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18575] exit_group(0)               = ?
[pid 18575] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18575, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18576 attached
 <unfinished ...>
[pid 18576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18576] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18576
[pid 18576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18576] write(3, "1000", 4)         = 4
[pid 18576] close(3)                    = 0
[pid 18576] memfd_create("syzkaller", 0) = 3
[pid 18576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18576] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18576] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18576] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18576] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18576] close(4)                    = 0
[pid 18576] close(3)                    = 0
[pid 18576] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18576] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18576] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18576] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18576] open("./bus", O_RDONLY)     = 3
[pid 18576] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18576] exit_group(0)               = ?
[pid 18576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18577 attached
, child_tidptr=0x55555606b5d0) = 18577
[pid 18577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18577] setpgid(0, 0)               = 0
[pid 18577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18577] write(3, "1000", 4)         = 4
[pid 18577] close(3)                    = 0
[pid 18577] memfd_create("syzkaller", 0) = 3
[pid 18577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18577] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18577] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18577] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18577] close(4)                    = 0
[pid 18577] close(3)                    = 0
[pid 18577] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18577] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18577] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18577] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18577] open("./bus", O_RDONLY)     = 3
[pid 18577] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18577] exit_group(0)               = ?
[pid 18577] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18577, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18578
./strace-static-x86_64: Process 18578 attached
[pid 18578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18578] setpgid(0, 0)               = 0
[pid 18578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18578] write(3, "1000", 4)         = 4
[pid 18578] close(3)                    = 0
[pid 18578] memfd_create("syzkaller", 0) = 3
[pid 18578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18578] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18578] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18578] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18578] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18578] close(4)                    = 0
[pid 18578] close(3)                    = 0
[pid 18578] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18578] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18578] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18578] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18578] open("./bus", O_RDONLY)     = 3
[pid 18578] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18578] exit_group(0)               = ?
[pid 18578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18579
./strace-static-x86_64: Process 18579 attached
[pid 18579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18579] setpgid(0, 0)               = 0
[pid 18579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18579] write(3, "1000", 4)         = 4
[pid 18579] close(3)                    = 0
[pid 18579] memfd_create("syzkaller", 0) = 3
[pid 18579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18579] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18579] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18579] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18579] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18579] close(4)                    = 0
[pid 18579] close(3)                    = 0
[pid 18579] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18579] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18579] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18579] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18579] open("./bus", O_RDONLY)     = 3
[pid 18579] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18579] exit_group(0)               = ?
[pid 18579] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18579, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18580 attached
, child_tidptr=0x55555606b5d0) = 18580
[pid 18580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18580] setpgid(0, 0)               = 0
[pid 18580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18580] write(3, "1000", 4)         = 4
[pid 18580] close(3)                    = 0
[pid 18580] memfd_create("syzkaller", 0) = 3
[pid 18580] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18580] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18580] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18580] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18580] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18580] close(4)                    = 0
[pid 18580] close(3)                    = 0
[pid 18580] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18580] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18580] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18580] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18580] open("./bus", O_RDONLY)     = 3
[pid 18580] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18580] exit_group(0)               = ?
[pid 18580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18581 attached
, child_tidptr=0x55555606b5d0) = 18581
[pid 18581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18581] setpgid(0, 0)               = 0
[pid 18581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18581] write(3, "1000", 4)         = 4
[pid 18581] close(3)                    = 0
[pid 18581] memfd_create("syzkaller", 0) = 3
[pid 18581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18581] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18581] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18581] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18581] close(4)                    = 0
[pid 18581] close(3)                    = 0
[pid 18581] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18581] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18581] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18581] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18581] open("./bus", O_RDONLY)     = 3
[pid 18581] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18581] exit_group(0)               = ?
[pid 18581] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18581, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18582
./strace-static-x86_64: Process 18582 attached
[pid 18582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18582] setpgid(0, 0)               = 0
[pid 18582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18582] write(3, "1000", 4)         = 4
[pid 18582] close(3)                    = 0
[pid 18582] memfd_create("syzkaller", 0) = 3
[pid 18582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18582] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18582] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18582] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18582] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18582] close(4)                    = 0
[pid 18582] close(3)                    = 0
[pid 18582] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18582] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18582] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18582] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18582] open("./bus", O_RDONLY)     = 3
[pid 18582] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18582] exit_group(0)               = ?
[pid 18582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18583
./strace-static-x86_64: Process 18583 attached
[pid 18583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18583] setpgid(0, 0)               = 0
[pid 18583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18583] write(3, "1000", 4)         = 4
[pid 18583] close(3)                    = 0
[pid 18583] memfd_create("syzkaller", 0) = 3
[pid 18583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18583] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18583] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18583] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18583] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18583] close(4)                    = 0
[pid 18583] close(3)                    = 0
[pid 18583] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18583] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18583] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18583] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18583] open("./bus", O_RDONLY)     = 3
[pid 18583] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18583] exit_group(0)               = ?
[pid 18583] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18583, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18584
./strace-static-x86_64: Process 18584 attached
[pid 18584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18584] setpgid(0, 0)               = 0
[pid 18584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18584] write(3, "1000", 4)         = 4
[pid 18584] close(3)                    = 0
[pid 18584] memfd_create("syzkaller", 0) = 3
[pid 18584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18584] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18584] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18584] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18584] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18584] close(4)                    = 0
[pid 18584] close(3)                    = 0
[pid 18584] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18584] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18584] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18584] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18584] open("./bus", O_RDONLY)     = 3
[pid 18584] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18584] exit_group(0)               = ?
[pid 18584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18585 attached
, child_tidptr=0x55555606b5d0) = 18585
[pid 18585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18585] setpgid(0, 0)               = 0
[pid 18585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18585] write(3, "1000", 4)         = 4
[pid 18585] close(3)                    = 0
[pid 18585] memfd_create("syzkaller", 0) = 3
[pid 18585] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18585] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18585] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18585] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18585] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18585] close(4)                    = 0
[pid 18585] close(3)                    = 0
[pid 18585] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18585] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18585] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18585] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18585] open("./bus", O_RDONLY)     = 3
[pid 18585] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18585] exit_group(0)               = ?
[pid 18585] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18585, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18586 attached
, child_tidptr=0x55555606b5d0) = 18586
[pid 18586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18586] setpgid(0, 0)               = 0
[pid 18586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18586] write(3, "1000", 4)         = 4
[pid 18586] close(3)                    = 0
[pid 18586] memfd_create("syzkaller", 0) = 3
[pid 18586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18586] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18586] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18586] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18586] close(4)                    = 0
[pid 18586] close(3)                    = 0
[pid 18586] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18586] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18586] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18586] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18586] open("./bus", O_RDONLY)     = 3
[pid 18586] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18586] exit_group(0)               = ?
[pid 18586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18587 attached
, child_tidptr=0x55555606b5d0) = 18587
[pid 18587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18587] setpgid(0, 0)               = 0
[pid 18587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18587] write(3, "1000", 4)         = 4
[pid 18587] close(3)                    = 0
[pid 18587] memfd_create("syzkaller", 0) = 3
[pid 18587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18587] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18587] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18587] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18587] close(4)                    = 0
[pid 18587] close(3)                    = 0
[pid 18587] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18587] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18587] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18587] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18587] open("./bus", O_RDONLY)     = 3
[pid 18587] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18587] exit_group(0)               = ?
[pid 18587] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18587, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18588
./strace-static-x86_64: Process 18588 attached
[pid 18588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18588] setpgid(0, 0)               = 0
[pid 18588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18588] write(3, "1000", 4)         = 4
[pid 18588] close(3)                    = 0
[pid 18588] memfd_create("syzkaller", 0) = 3
[pid 18588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18588] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18588] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18588] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18588] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18588] close(4)                    = 0
[pid 18588] close(3)                    = 0
[pid 18588] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18588] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18588] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18588] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18588] open("./bus", O_RDONLY)     = 3
[pid 18588] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18588] exit_group(0)               = ?
[pid 18588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18589
./strace-static-x86_64: Process 18589 attached
[pid 18589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18589] setpgid(0, 0)               = 0
[pid 18589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18589] write(3, "1000", 4)         = 4
[pid 18589] close(3)                    = 0
[pid 18589] memfd_create("syzkaller", 0) = 3
[pid 18589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18589] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18589] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18589] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18589] close(4)                    = 0
[pid 18589] close(3)                    = 0
[pid 18589] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18589] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18589] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18589] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18589] open("./bus", O_RDONLY)     = 3
[pid 18589] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18589] exit_group(0)               = ?
[pid 18589] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18589, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18590
./strace-static-x86_64: Process 18590 attached
[pid 18590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18590] setpgid(0, 0)               = 0
[pid 18590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18590] write(3, "1000", 4)         = 4
[pid 18590] close(3)                    = 0
[pid 18590] memfd_create("syzkaller", 0) = 3
[pid 18590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18590] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18590] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18590] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18590] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18590] close(4)                    = 0
[pid 18590] close(3)                    = 0
[pid 18590] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18590] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18590] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18590] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18590] open("./bus", O_RDONLY)     = 3
[pid 18590] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18590] exit_group(0)               = ?
[pid 18590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18591 attached
, child_tidptr=0x55555606b5d0) = 18591
[pid 18591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18591] setpgid(0, 0)               = 0
[pid 18591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18591] write(3, "1000", 4)         = 4
[pid 18591] close(3)                    = 0
[pid 18591] memfd_create("syzkaller", 0) = 3
[pid 18591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18591] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18591] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18591] close(4)                    = 0
[pid 18591] close(3)                    = 0
[pid 18591] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18591] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18591] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18591] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18591] open("./bus", O_RDONLY)     = 3
[pid 18591] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18591] exit_group(0)               = ?
[pid 18591] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18591, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18592
./strace-static-x86_64: Process 18592 attached
[pid 18592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18592] setpgid(0, 0)               = 0
[pid 18592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18592] write(3, "1000", 4)         = 4
[pid 18592] close(3)                    = 0
[pid 18592] memfd_create("syzkaller", 0) = 3
[pid 18592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18592] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18592] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18592] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18592] close(4)                    = 0
[pid 18592] close(3)                    = 0
[pid 18592] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18592] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18592] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18592] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18592] open("./bus", O_RDONLY)     = 3
[pid 18592] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18592] exit_group(0)               = ?
[pid 18592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18593
./strace-static-x86_64: Process 18593 attached
[pid 18593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18593] setpgid(0, 0)               = 0
[pid 18593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18593] write(3, "1000", 4)         = 4
[pid 18593] close(3)                    = 0
[pid 18593] memfd_create("syzkaller", 0) = 3
[pid 18593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18593] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18593] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18593] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18593] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18593] close(4)                    = 0
[pid 18593] close(3)                    = 0
[pid 18593] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18593] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18593] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18593] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18593] open("./bus", O_RDONLY)     = 3
[pid 18593] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18593] exit_group(0)               = ?
[pid 18593] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18593, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18594
./strace-static-x86_64: Process 18594 attached
[pid 18594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18594] setpgid(0, 0)               = 0
[pid 18594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18594] write(3, "1000", 4)         = 4
[pid 18594] close(3)                    = 0
[pid 18594] memfd_create("syzkaller", 0) = 3
[pid 18594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18594] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18594] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18594] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18594] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18594] close(4)                    = 0
[pid 18594] close(3)                    = 0
[pid 18594] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18594] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18594] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18594] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18594] open("./bus", O_RDONLY)     = 3
[pid 18594] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18594] exit_group(0)               = ?
[pid 18594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18595 attached
, child_tidptr=0x55555606b5d0) = 18595
[pid 18595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18595] setpgid(0, 0)               = 0
[pid 18595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18595] write(3, "1000", 4)         = 4
[pid 18595] close(3)                    = 0
[pid 18595] memfd_create("syzkaller", 0) = 3
[pid 18595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18595] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18595] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18595] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18595] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18595] close(4)                    = 0
[pid 18595] close(3)                    = 0
[pid 18595] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18595] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18595] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18595] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18595] open("./bus", O_RDONLY)     = 3
[pid 18595] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18595] exit_group(0)               = ?
[pid 18595] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18595, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18596 attached
, child_tidptr=0x55555606b5d0) = 18596
[pid 18596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18596] setpgid(0, 0)               = 0
[pid 18596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18596] write(3, "1000", 4)         = 4
[pid 18596] close(3)                    = 0
[pid 18596] memfd_create("syzkaller", 0) = 3
[pid 18596] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18596] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18596] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18596] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18596] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18596] close(4)                    = 0
[pid 18596] close(3)                    = 0
[pid 18596] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18596] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18596] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18596] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18596] open("./bus", O_RDONLY)     = 3
[pid 18596] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18596] exit_group(0)               = ?
[pid 18596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18597
./strace-static-x86_64: Process 18597 attached
[pid 18597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18597] setpgid(0, 0)               = 0
[pid 18597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18597] write(3, "1000", 4)         = 4
[pid 18597] close(3)                    = 0
[pid 18597] memfd_create("syzkaller", 0) = 3
[pid 18597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18597] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18597] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18597] close(4)                    = 0
[pid 18597] close(3)                    = 0
[pid 18597] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18597] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18597] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18597] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18597] open("./bus", O_RDONLY)     = 3
[pid 18597] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18597] exit_group(0)               = ?
[pid 18597] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18597, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18598 attached
, child_tidptr=0x55555606b5d0) = 18598
[pid 18598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18598] setpgid(0, 0)               = 0
[pid 18598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18598] write(3, "1000", 4)         = 4
[pid 18598] close(3)                    = 0
[pid 18598] memfd_create("syzkaller", 0) = 3
[pid 18598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18598] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18598] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18598] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18598] close(4)                    = 0
[pid 18598] close(3)                    = 0
[pid 18598] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18598] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18598] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18598] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18598] open("./bus", O_RDONLY)     = 3
[pid 18598] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18598] exit_group(0)               = ?
[pid 18598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18599
./strace-static-x86_64: Process 18599 attached
[pid 18599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18599] setpgid(0, 0)               = 0
[pid 18599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18599] write(3, "1000", 4)         = 4
[pid 18599] close(3)                    = 0
[pid 18599] memfd_create("syzkaller", 0) = 3
[pid 18599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18599] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18599] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18599] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18599] close(4)                    = 0
[pid 18599] close(3)                    = 0
[pid 18599] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18599] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18599] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18599] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18599] open("./bus", O_RDONLY)     = 3
[pid 18599] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18599] exit_group(0)               = ?
[pid 18599] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18599, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18600
./strace-static-x86_64: Process 18600 attached
[pid 18600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18600] setpgid(0, 0)               = 0
[pid 18600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18600] write(3, "1000", 4)         = 4
[pid 18600] close(3)                    = 0
[pid 18600] memfd_create("syzkaller", 0) = 3
[pid 18600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18600] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18600] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18600] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18600] close(4)                    = 0
[pid 18600] close(3)                    = 0
[pid 18600] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18600] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18600] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18600] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18600] open("./bus", O_RDONLY)     = 3
[pid 18600] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18600] exit_group(0)               = ?
[pid 18600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18601 attached
, child_tidptr=0x55555606b5d0) = 18601
[pid 18601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18601] setpgid(0, 0)               = 0
[pid 18601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18601] write(3, "1000", 4)         = 4
[pid 18601] close(3)                    = 0
[pid 18601] memfd_create("syzkaller", 0) = 3
[pid 18601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18601] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18601] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18601] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18601] close(4)                    = 0
[pid 18601] close(3)                    = 0
[pid 18601] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18601] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18601] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18601] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18601] open("./bus", O_RDONLY)     = 3
[pid 18601] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18601] exit_group(0)               = ?
[pid 18601] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18601, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18602
./strace-static-x86_64: Process 18602 attached
[pid 18602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18602] setpgid(0, 0)               = 0
[pid 18602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18602] write(3, "1000", 4)         = 4
[pid 18602] close(3)                    = 0
[pid 18602] memfd_create("syzkaller", 0) = 3
[pid 18602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18602] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18602] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18602] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18602] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18602] close(4)                    = 0
[pid 18602] close(3)                    = 0
[pid 18602] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18602] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18602] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18602] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18602] open("./bus", O_RDONLY)     = 3
[pid 18602] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18602] exit_group(0)               = ?
[pid 18602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18603 attached
, child_tidptr=0x55555606b5d0) = 18603
[pid 18603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18603] setpgid(0, 0)               = 0
[pid 18603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18603] write(3, "1000", 4)         = 4
[pid 18603] close(3)                    = 0
[pid 18603] memfd_create("syzkaller", 0) = 3
[pid 18603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18603] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18603] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18603] close(4)                    = 0
[pid 18603] close(3)                    = 0
[pid 18603] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18603] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18603] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18603] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18603] open("./bus", O_RDONLY)     = 3
[pid 18603] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18603] exit_group(0)               = ?
[pid 18603] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18603, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18604 attached
, child_tidptr=0x55555606b5d0) = 18604
[pid 18604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18604] setpgid(0, 0)               = 0
[pid 18604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18604] write(3, "1000", 4)         = 4
[pid 18604] close(3)                    = 0
[pid 18604] memfd_create("syzkaller", 0) = 3
[pid 18604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18604] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18604] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18604] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18604] close(4)                    = 0
[pid 18604] close(3)                    = 0
[pid 18604] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18604] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18604] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18604] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18604] open("./bus", O_RDONLY)     = 3
[pid 18604] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18604] exit_group(0)               = ?
[pid 18604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18604, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18605
./strace-static-x86_64: Process 18605 attached
[pid 18605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18605] setpgid(0, 0)               = 0
[pid 18605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18605] write(3, "1000", 4)         = 4
[pid 18605] close(3)                    = 0
[pid 18605] memfd_create("syzkaller", 0) = 3
[pid 18605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18605] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18605] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18605] close(4)                    = 0
[pid 18605] close(3)                    = 0
[pid 18605] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18605] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18605] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18605] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18605] open("./bus", O_RDONLY)     = 3
[pid 18605] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18605] exit_group(0)               = ?
[pid 18605] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18605, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18606 attached
, child_tidptr=0x55555606b5d0) = 18606
[pid 18606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18606] setpgid(0, 0)               = 0
[pid 18606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18606] write(3, "1000", 4)         = 4
[pid 18606] close(3)                    = 0
[pid 18606] memfd_create("syzkaller", 0) = 3
[pid 18606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18606] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18606] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18606] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18606] close(4)                    = 0
[pid 18606] close(3)                    = 0
[pid 18606] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18606] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18606] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18606] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18606] open("./bus", O_RDONLY)     = 3
[pid 18606] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18606] exit_group(0)               = ?
[pid 18606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18607
./strace-static-x86_64: Process 18607 attached
[pid 18607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18607] setpgid(0, 0)               = 0
[pid 18607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18607] write(3, "1000", 4)         = 4
[pid 18607] close(3)                    = 0
[pid 18607] memfd_create("syzkaller", 0) = 3
[pid 18607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18607] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18607] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18607] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18607] close(4)                    = 0
[pid 18607] close(3)                    = 0
[pid 18607] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18607] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18607] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18607] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18607] open("./bus", O_RDONLY)     = 3
[pid 18607] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18607] exit_group(0)               = ?
[pid 18607] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18607, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18608 attached
, child_tidptr=0x55555606b5d0) = 18608
[pid 18608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18608] setpgid(0, 0)               = 0
[pid 18608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18608] write(3, "1000", 4)         = 4
[pid 18608] close(3)                    = 0
[pid 18608] memfd_create("syzkaller", 0) = 3
[pid 18608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18608] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18608] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18608] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18608] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18608] close(4)                    = 0
[pid 18608] close(3)                    = 0
[pid 18608] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18608] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18608] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18608] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18608] open("./bus", O_RDONLY)     = 3
[pid 18608] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18608] exit_group(0)               = ?
[pid 18608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18609 attached
, child_tidptr=0x55555606b5d0) = 18609
[pid 18609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18609] setpgid(0, 0)               = 0
[pid 18609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18609] write(3, "1000", 4)         = 4
[pid 18609] close(3)                    = 0
[pid 18609] memfd_create("syzkaller", 0) = 3
[pid 18609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18609] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18609] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18609] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18609] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18609] close(4)                    = 0
[pid 18609] close(3)                    = 0
[pid 18609] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18609] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18609] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18609] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18609] open("./bus", O_RDONLY)     = 3
[pid 18609] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18609] exit_group(0)               = ?
[pid 18609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18609, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18610
./strace-static-x86_64: Process 18610 attached
[pid 18610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18610] setpgid(0, 0)               = 0
[pid 18610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18610] write(3, "1000", 4)         = 4
[pid 18610] close(3)                    = 0
[pid 18610] memfd_create("syzkaller", 0) = 3
[pid 18610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18610] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18610] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18610] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18610] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18610] close(4)                    = 0
[pid 18610] close(3)                    = 0
[pid 18610] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18610] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18610] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18610] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18610] open("./bus", O_RDONLY)     = 3
[pid 18610] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18610] exit_group(0)               = ?
[pid 18610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18611 attached
, child_tidptr=0x55555606b5d0) = 18611
[pid 18611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18611] setpgid(0, 0)               = 0
[pid 18611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18611] write(3, "1000", 4)         = 4
[pid 18611] close(3)                    = 0
[pid 18611] memfd_create("syzkaller", 0) = 3
[pid 18611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18611] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18611] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18611] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18611] close(4)                    = 0
[pid 18611] close(3)                    = 0
[pid 18611] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18611] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18611] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18611] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18611] open("./bus", O_RDONLY)     = 3
[pid 18611] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18611] exit_group(0)               = ?
[pid 18611] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18611, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18612 attached
, child_tidptr=0x55555606b5d0) = 18612
[pid 18612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18612] setpgid(0, 0)               = 0
[pid 18612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18612] write(3, "1000", 4)         = 4
[pid 18612] close(3)                    = 0
[pid 18612] memfd_create("syzkaller", 0) = 3
[pid 18612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18612] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18612] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18612] close(4)                    = 0
[pid 18612] close(3)                    = 0
[pid 18612] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18612] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18612] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18612] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18612] open("./bus", O_RDONLY)     = 3
[pid 18612] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18612] exit_group(0)               = ?
[pid 18612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18613 attached
, child_tidptr=0x55555606b5d0) = 18613
[pid 18613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18613] setpgid(0, 0)               = 0
[pid 18613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18613] write(3, "1000", 4)         = 4
[pid 18613] close(3)                    = 0
[pid 18613] memfd_create("syzkaller", 0) = 3
[pid 18613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18613] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18613] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18613] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18613] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18613] close(4)                    = 0
[pid 18613] close(3)                    = 0
[pid 18613] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18613] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18613] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18613] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18613] open("./bus", O_RDONLY)     = 3
[pid 18613] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18613] exit_group(0)               = ?
[pid 18613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18613, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18614
./strace-static-x86_64: Process 18614 attached
[pid 18614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18614] setpgid(0, 0)               = 0
[pid 18614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18614] write(3, "1000", 4)         = 4
[pid 18614] close(3)                    = 0
[pid 18614] memfd_create("syzkaller", 0) = 3
[pid 18614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18614] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18614] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18614] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18614] close(4)                    = 0
[pid 18614] close(3)                    = 0
[pid 18614] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18614] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18614] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18614] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18614] open("./bus", O_RDONLY)     = 3
[pid 18614] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18614] exit_group(0)               = ?
[pid 18614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18615
./strace-static-x86_64: Process 18615 attached
[pid 18615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18615] setpgid(0, 0)               = 0
[pid 18615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18615] write(3, "1000", 4)         = 4
[pid 18615] close(3)                    = 0
[pid 18615] memfd_create("syzkaller", 0) = 3
[pid 18615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18615] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18615] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18615] close(4)                    = 0
[pid 18615] close(3)                    = 0
[pid 18615] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18615] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18615] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18615] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18615] open("./bus", O_RDONLY)     = 3
[pid 18615] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18615] exit_group(0)               = ?
[pid 18615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18615, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18616
./strace-static-x86_64: Process 18616 attached
[pid 18616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18616] setpgid(0, 0)               = 0
[pid 18616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18616] write(3, "1000", 4)         = 4
[pid 18616] close(3)                    = 0
[pid 18616] memfd_create("syzkaller", 0) = 3
[pid 18616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18616] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18616] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18616] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18616] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18616] close(4)                    = 0
[pid 18616] close(3)                    = 0
[pid 18616] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18616] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18616] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18616] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18616] open("./bus", O_RDONLY)     = 3
[pid 18616] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18616] exit_group(0)               = ?
[pid 18616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18617
./strace-static-x86_64: Process 18617 attached
[pid 18617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18617] setpgid(0, 0)               = 0
[pid 18617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18617] write(3, "1000", 4)         = 4
[pid 18617] close(3)                    = 0
[pid 18617] memfd_create("syzkaller", 0) = 3
[pid 18617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18617] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18617] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18617] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18617] close(4)                    = 0
[pid 18617] close(3)                    = 0
[pid 18617] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18617] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18617] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18617] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18617] open("./bus", O_RDONLY)     = 3
[pid 18617] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18617] exit_group(0)               = ?
[pid 18617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18617, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18618
./strace-static-x86_64: Process 18618 attached
[pid 18618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18618] setpgid(0, 0)               = 0
[pid 18618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18618] write(3, "1000", 4)         = 4
[pid 18618] close(3)                    = 0
[pid 18618] memfd_create("syzkaller", 0) = 3
[pid 18618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18618] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18618] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18618] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18618] close(4)                    = 0
[pid 18618] close(3)                    = 0
[pid 18618] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18618] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18618] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18618] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18618] open("./bus", O_RDONLY)     = 3
[pid 18618] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18618] exit_group(0)               = ?
[pid 18618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18619 attached
, child_tidptr=0x55555606b5d0) = 18619
[pid 18619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18619] setpgid(0, 0)               = 0
[pid 18619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18619] write(3, "1000", 4)         = 4
[pid 18619] close(3)                    = 0
[pid 18619] memfd_create("syzkaller", 0) = 3
[pid 18619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18619] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18619] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18619] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18619] close(4)                    = 0
[pid 18619] close(3)                    = 0
[pid 18619] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18619] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18619] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18619] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18619] open("./bus", O_RDONLY)     = 3
[pid 18619] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18619] exit_group(0)               = ?
[pid 18619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18620 attached
, child_tidptr=0x55555606b5d0) = 18620
[pid 18620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18620] setpgid(0, 0)               = 0
[pid 18620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18620] write(3, "1000", 4)         = 4
[pid 18620] close(3)                    = 0
[pid 18620] memfd_create("syzkaller", 0) = 3
[pid 18620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18620] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18620] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18620] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18620] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18620] close(4)                    = 0
[pid 18620] close(3)                    = 0
[pid 18620] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18620] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18620] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18620] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18620] open("./bus", O_RDONLY)     = 3
[pid 18620] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18620] exit_group(0)               = ?
[pid 18620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18621
./strace-static-x86_64: Process 18621 attached
[pid 18621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18621] setpgid(0, 0)               = 0
[pid 18621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18621] write(3, "1000", 4)         = 4
[pid 18621] close(3)                    = 0
[pid 18621] memfd_create("syzkaller", 0) = 3
[pid 18621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18621] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18621] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18621] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18621] close(4)                    = 0
[pid 18621] close(3)                    = 0
[pid 18621] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18621] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18621] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18621] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18621] open("./bus", O_RDONLY)     = 3
[pid 18621] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18621] exit_group(0)               = ?
[pid 18621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18621, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18622
./strace-static-x86_64: Process 18622 attached
[pid 18622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18622] setpgid(0, 0)               = 0
[pid 18622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18622] write(3, "1000", 4)         = 4
[pid 18622] close(3)                    = 0
[pid 18622] memfd_create("syzkaller", 0) = 3
[pid 18622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18622] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18622] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18622] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18622] close(4)                    = 0
[pid 18622] close(3)                    = 0
[pid 18622] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18622] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18622] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18622] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18622] open("./bus", O_RDONLY)     = 3
[pid 18622] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18622] exit_group(0)               = ?
[pid 18622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18623
./strace-static-x86_64: Process 18623 attached
[pid 18623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18623] setpgid(0, 0)               = 0
[pid 18623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18623] write(3, "1000", 4)         = 4
[pid 18623] close(3)                    = 0
[pid 18623] memfd_create("syzkaller", 0) = 3
[pid 18623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18623] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18623] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18623] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18623] close(4)                    = 0
[pid 18623] close(3)                    = 0
[pid 18623] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18623] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18623] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18623] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18623] open("./bus", O_RDONLY)     = 3
[pid 18623] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18623] exit_group(0)               = ?
[pid 18623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18624 attached
, child_tidptr=0x55555606b5d0) = 18624
[pid 18624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18624] setpgid(0, 0)               = 0
[pid 18624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18624] write(3, "1000", 4)         = 4
[pid 18624] close(3)                    = 0
[pid 18624] memfd_create("syzkaller", 0) = 3
[pid 18624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18624] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18624] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18624] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18624] close(4)                    = 0
[pid 18624] close(3)                    = 0
[pid 18624] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18624] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18624] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18624] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18624] open("./bus", O_RDONLY)     = 3
[pid 18624] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18624] exit_group(0)               = ?
[pid 18624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18625
./strace-static-x86_64: Process 18625 attached
[pid 18625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18625] setpgid(0, 0)               = 0
[pid 18625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18625] write(3, "1000", 4)         = 4
[pid 18625] close(3)                    = 0
[pid 18625] memfd_create("syzkaller", 0) = 3
[pid 18625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18625] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18625] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18625] close(4)                    = 0
[pid 18625] close(3)                    = 0
[pid 18625] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18625] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18625] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18625] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18625] open("./bus", O_RDONLY)     = 3
[pid 18625] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18625] exit_group(0)               = ?
[pid 18625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18625, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18626
./strace-static-x86_64: Process 18626 attached
[pid 18626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18626] setpgid(0, 0)               = 0
[pid 18626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18626] write(3, "1000", 4)         = 4
[pid 18626] close(3)                    = 0
[pid 18626] memfd_create("syzkaller", 0) = 3
[pid 18626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18626] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18626] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18626] close(4)                    = 0
[pid 18626] close(3)                    = 0
[pid 18626] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18626] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18626] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18626] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18626] open("./bus", O_RDONLY)     = 3
[pid 18626] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18626] exit_group(0)               = ?
[pid 18626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18627 attached
, child_tidptr=0x55555606b5d0) = 18627
[pid 18627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18627] setpgid(0, 0)               = 0
[pid 18627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18627] write(3, "1000", 4)         = 4
[pid 18627] close(3)                    = 0
[pid 18627] memfd_create("syzkaller", 0) = 3
[pid 18627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18627] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18627] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18627] close(4)                    = 0
[pid 18627] close(3)                    = 0
[pid 18627] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18627] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18627] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18627] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18627] open("./bus", O_RDONLY)     = 3
[pid 18627] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18627] exit_group(0)               = ?
[pid 18627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18627, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18628 attached
, child_tidptr=0x55555606b5d0) = 18628
[pid 18628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18628] setpgid(0, 0)               = 0
[pid 18628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18628] write(3, "1000", 4)         = 4
[pid 18628] close(3)                    = 0
[pid 18628] memfd_create("syzkaller", 0) = 3
[pid 18628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18628] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18628] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18628] close(4)                    = 0
[pid 18628] close(3)                    = 0
[pid 18628] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18628] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18628] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18628] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18628] open("./bus", O_RDONLY)     = 3
[pid 18628] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18628] exit_group(0)               = ?
[pid 18628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18629
./strace-static-x86_64: Process 18629 attached
[pid 18629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18629] setpgid(0, 0)               = 0
[pid 18629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18629] write(3, "1000", 4)         = 4
[pid 18629] close(3)                    = 0
[pid 18629] memfd_create("syzkaller", 0) = 3
[pid 18629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18629] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18629] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18629] close(4)                    = 0
[pid 18629] close(3)                    = 0
[pid 18629] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18629] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18629] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18629] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18629] open("./bus", O_RDONLY)     = 3
[pid 18629] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18629] exit_group(0)               = ?
[pid 18629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18629, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18630
./strace-static-x86_64: Process 18630 attached
[pid 18630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18630] setpgid(0, 0)               = 0
[pid 18630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18630] write(3, "1000", 4)         = 4
[pid 18630] close(3)                    = 0
[pid 18630] memfd_create("syzkaller", 0) = 3
[pid 18630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18630] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18630] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18630] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18630] close(4)                    = 0
[pid 18630] close(3)                    = 0
[pid 18630] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18630] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18630] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18630] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18630] open("./bus", O_RDONLY)     = 3
[pid 18630] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18630] exit_group(0)               = ?
[pid 18630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18631
./strace-static-x86_64: Process 18631 attached
[pid 18631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18631] setpgid(0, 0)               = 0
[pid 18631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18631] write(3, "1000", 4)         = 4
[pid 18631] close(3)                    = 0
[pid 18631] memfd_create("syzkaller", 0) = 3
[pid 18631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18631] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18631] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18631] close(4)                    = 0
[pid 18631] close(3)                    = 0
[pid 18631] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18631] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18631] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18631] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18631] open("./bus", O_RDONLY)     = 3
[pid 18631] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18631] exit_group(0)               = ?
[pid 18631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18632
./strace-static-x86_64: Process 18632 attached
[pid 18632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18632] setpgid(0, 0)               = 0
[pid 18632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18632] write(3, "1000", 4)         = 4
[pid 18632] close(3)                    = 0
[pid 18632] memfd_create("syzkaller", 0) = 3
[pid 18632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18632] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18632] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18632] close(4)                    = 0
[pid 18632] close(3)                    = 0
[pid 18632] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18632] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18632] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18632] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18632] open("./bus", O_RDONLY)     = 3
[pid 18632] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18632] exit_group(0)               = ?
[pid 18632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18633
./strace-static-x86_64: Process 18633 attached
[pid 18633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18633] setpgid(0, 0)               = 0
[pid 18633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18633] write(3, "1000", 4)         = 4
[pid 18633] close(3)                    = 0
[pid 18633] memfd_create("syzkaller", 0) = 3
[pid 18633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18633] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18633] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18633] close(4)                    = 0
[pid 18633] close(3)                    = 0
[pid 18633] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18633] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18633] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18633] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18633] open("./bus", O_RDONLY)     = 3
[pid 18633] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18633] exit_group(0)               = ?
[pid 18633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18634
./strace-static-x86_64: Process 18634 attached
[pid 18634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18634] setpgid(0, 0)               = 0
[pid 18634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18634] write(3, "1000", 4)         = 4
[pid 18634] close(3)                    = 0
[pid 18634] memfd_create("syzkaller", 0) = 3
[pid 18634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18634] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18634] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18634] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18634] close(4)                    = 0
[pid 18634] close(3)                    = 0
[pid 18634] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18634] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18634] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18634] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18634] open("./bus", O_RDONLY)     = 3
[pid 18634] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18634] exit_group(0)               = ?
[pid 18634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18635
./strace-static-x86_64: Process 18635 attached
[pid 18635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18635] setpgid(0, 0)               = 0
[pid 18635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18635] write(3, "1000", 4)         = 4
[pid 18635] close(3)                    = 0
[pid 18635] memfd_create("syzkaller", 0) = 3
[pid 18635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18635] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18635] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18635] close(4)                    = 0
[pid 18635] close(3)                    = 0
[pid 18635] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18635] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18635] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18635] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18635] open("./bus", O_RDONLY)     = 3
[pid 18635] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18635] exit_group(0)               = ?
[pid 18635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18636
./strace-static-x86_64: Process 18636 attached
[pid 18636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18636] setpgid(0, 0)               = 0
[pid 18636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18636] write(3, "1000", 4)         = 4
[pid 18636] close(3)                    = 0
[pid 18636] memfd_create("syzkaller", 0) = 3
[pid 18636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18636] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18636] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18636] close(4)                    = 0
[pid 18636] close(3)                    = 0
[pid 18636] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18636] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18636] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18636] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18636] open("./bus", O_RDONLY)     = 3
[pid 18636] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18636] exit_group(0)               = ?
[pid 18636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18636, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18637
./strace-static-x86_64: Process 18637 attached
[pid 18637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18637] setpgid(0, 0)               = 0
[pid 18637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18637] write(3, "1000", 4)         = 4
[pid 18637] close(3)                    = 0
[pid 18637] memfd_create("syzkaller", 0) = 3
[pid 18637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18637] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18637] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18637] close(4)                    = 0
[pid 18637] close(3)                    = 0
[pid 18637] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18637] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18637] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18637] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18637] open("./bus", O_RDONLY)     = 3
[pid 18637] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18637] exit_group(0)               = ?
[pid 18637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18637, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18638 attached
, child_tidptr=0x55555606b5d0) = 18638
[pid 18638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18638] setpgid(0, 0)               = 0
[pid 18638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18638] write(3, "1000", 4)         = 4
[pid 18638] close(3)                    = 0
[pid 18638] memfd_create("syzkaller", 0) = 3
[pid 18638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18638] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18638] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18638] close(4)                    = 0
[pid 18638] close(3)                    = 0
[pid 18638] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18638] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18638] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18638] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18638] open("./bus", O_RDONLY)     = 3
[pid 18638] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18638] exit_group(0)               = ?
[pid 18638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18638, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18639 attached
, child_tidptr=0x55555606b5d0) = 18639
[pid 18639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18639] setpgid(0, 0)               = 0
[pid 18639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18639] write(3, "1000", 4)         = 4
[pid 18639] close(3)                    = 0
[pid 18639] memfd_create("syzkaller", 0) = 3
[pid 18639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18639] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18639] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18639] close(4)                    = 0
[pid 18639] close(3)                    = 0
[pid 18639] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18639] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18639] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18639] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18639] open("./bus", O_RDONLY)     = 3
[pid 18639] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18639] exit_group(0)               = ?
[pid 18639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18640 attached
, child_tidptr=0x55555606b5d0) = 18640
[pid 18640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18640] setpgid(0, 0)               = 0
[pid 18640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18640] write(3, "1000", 4)         = 4
[pid 18640] close(3)                    = 0
[pid 18640] memfd_create("syzkaller", 0) = 3
[pid 18640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18640] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18640] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18640] close(4)                    = 0
[pid 18640] close(3)                    = 0
[pid 18640] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18640] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18640] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18640] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18640] open("./bus", O_RDONLY)     = 3
[pid 18640] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18640] exit_group(0)               = ?
[pid 18640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18641
./strace-static-x86_64: Process 18641 attached
[pid 18641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18641] setpgid(0, 0)               = 0
[pid 18641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18641] write(3, "1000", 4)         = 4
[pid 18641] close(3)                    = 0
[pid 18641] memfd_create("syzkaller", 0) = 3
[pid 18641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18641] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18641] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18641] close(4)                    = 0
[pid 18641] close(3)                    = 0
[pid 18641] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18641] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18641] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18641] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18641] open("./bus", O_RDONLY)     = 3
[pid 18641] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18641] exit_group(0)               = ?
[pid 18641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18641, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18642
./strace-static-x86_64: Process 18642 attached
[pid 18642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18642] setpgid(0, 0)               = 0
[pid 18642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18642] write(3, "1000", 4)         = 4
[pid 18642] close(3)                    = 0
[pid 18642] memfd_create("syzkaller", 0) = 3
[pid 18642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18642] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18642] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18642] close(4)                    = 0
[pid 18642] close(3)                    = 0
[pid 18642] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18642] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18642] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18642] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18642] open("./bus", O_RDONLY)     = 3
[pid 18642] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18642] exit_group(0)               = ?
[pid 18642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18643 attached
, child_tidptr=0x55555606b5d0) = 18643
[pid 18643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18643] setpgid(0, 0)               = 0
[pid 18643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18643] write(3, "1000", 4)         = 4
[pid 18643] close(3)                    = 0
[pid 18643] memfd_create("syzkaller", 0) = 3
[pid 18643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18643] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18643] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18643] close(4)                    = 0
[pid 18643] close(3)                    = 0
[pid 18643] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18643] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18643] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18643] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18643] open("./bus", O_RDONLY)     = 3
[pid 18643] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18643] exit_group(0)               = ?
[pid 18643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18644 attached
, child_tidptr=0x55555606b5d0) = 18644
[pid 18644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18644] setpgid(0, 0)               = 0
[pid 18644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18644] write(3, "1000", 4)         = 4
[pid 18644] close(3)                    = 0
[pid 18644] memfd_create("syzkaller", 0) = 3
[pid 18644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18644] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18644] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18644] close(4)                    = 0
[pid 18644] close(3)                    = 0
[pid 18644] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18644] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18644] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18644] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18644] open("./bus", O_RDONLY)     = 3
[pid 18644] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18644] exit_group(0)               = ?
[pid 18644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18645
./strace-static-x86_64: Process 18645 attached
[pid 18645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18645] setpgid(0, 0)               = 0
[pid 18645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18645] write(3, "1000", 4)         = 4
[pid 18645] close(3)                    = 0
[pid 18645] memfd_create("syzkaller", 0) = 3
[pid 18645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18645] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18645] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18645] close(4)                    = 0
[pid 18645] close(3)                    = 0
[pid 18645] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18645] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18645] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18645] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18645] open("./bus", O_RDONLY)     = 3
[pid 18645] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18645] exit_group(0)               = ?
[pid 18645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18646 attached
, child_tidptr=0x55555606b5d0) = 18646
[pid 18646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18646] setpgid(0, 0)               = 0
[pid 18646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18646] write(3, "1000", 4)         = 4
[pid 18646] close(3)                    = 0
[pid 18646] memfd_create("syzkaller", 0) = 3
[pid 18646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18646] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18646] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18646] close(4)                    = 0
[pid 18646] close(3)                    = 0
[pid 18646] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18646] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18646] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18646] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18646] open("./bus", O_RDONLY)     = 3
[pid 18646] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18646] exit_group(0)               = ?
[pid 18646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18647
./strace-static-x86_64: Process 18647 attached
[pid 18647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18647] setpgid(0, 0)               = 0
[pid 18647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18647] write(3, "1000", 4)         = 4
[pid 18647] close(3)                    = 0
[pid 18647] memfd_create("syzkaller", 0) = 3
[pid 18647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18647] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18647] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18647] close(4)                    = 0
[pid 18647] close(3)                    = 0
[pid 18647] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18647] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18647] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18647] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18647] open("./bus", O_RDONLY)     = 3
[pid 18647] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18647] exit_group(0)               = ?
[pid 18647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18647, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18648
./strace-static-x86_64: Process 18648 attached
[pid 18648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18648] setpgid(0, 0)               = 0
[pid 18648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18648] write(3, "1000", 4)         = 4
[pid 18648] close(3)                    = 0
[pid 18648] memfd_create("syzkaller", 0) = 3
[pid 18648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18648] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18648] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18648] close(4)                    = 0
[pid 18648] close(3)                    = 0
[pid 18648] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18648] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18648] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18648] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18648] open("./bus", O_RDONLY)     = 3
[pid 18648] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18648] exit_group(0)               = ?
[pid 18648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18649 attached
, child_tidptr=0x55555606b5d0) = 18649
[pid 18649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18649] setpgid(0, 0)               = 0
[pid 18649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18649] write(3, "1000", 4)         = 4
[pid 18649] close(3)                    = 0
[pid 18649] memfd_create("syzkaller", 0) = 3
[pid 18649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18649] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18649] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18649] close(4)                    = 0
[pid 18649] close(3)                    = 0
[pid 18649] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18649] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18649] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18649] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18649] open("./bus", O_RDONLY)     = 3
[pid 18649] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18649] exit_group(0)               = ?
[pid 18649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18650
./strace-static-x86_64: Process 18650 attached
[pid 18650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18650] setpgid(0, 0)               = 0
[pid 18650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18650] write(3, "1000", 4)         = 4
[pid 18650] close(3)                    = 0
[pid 18650] memfd_create("syzkaller", 0) = 3
[pid 18650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18650] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18650] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18650] close(4)                    = 0
[pid 18650] close(3)                    = 0
[pid 18650] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18650] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18650] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18650] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18650] open("./bus", O_RDONLY)     = 3
[pid 18650] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18650] exit_group(0)               = ?
[pid 18650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18651
./strace-static-x86_64: Process 18651 attached
[pid 18651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18651] setpgid(0, 0)               = 0
[pid 18651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18651] write(3, "1000", 4)         = 4
[pid 18651] close(3)                    = 0
[pid 18651] memfd_create("syzkaller", 0) = 3
[pid 18651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18651] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18651] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18651] close(4)                    = 0
[pid 18651] close(3)                    = 0
[pid 18651] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18651] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18651] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18651] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18651] open("./bus", O_RDONLY)     = 3
[pid 18651] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18651] exit_group(0)               = ?
[pid 18651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18651, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18652 attached
, child_tidptr=0x55555606b5d0) = 18652
[pid 18652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18652] setpgid(0, 0)               = 0
[pid 18652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18652] write(3, "1000", 4)         = 4
[pid 18652] close(3)                    = 0
[pid 18652] memfd_create("syzkaller", 0) = 3
[pid 18652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18652] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18652] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18652] close(4)                    = 0
[pid 18652] close(3)                    = 0
[pid 18652] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18652] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18652] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18652] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18652] open("./bus", O_RDONLY)     = 3
[pid 18652] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18652] exit_group(0)               = ?
[pid 18652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18653 attached
, child_tidptr=0x55555606b5d0) = 18653
[pid 18653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18653] setpgid(0, 0)               = 0
[pid 18653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18653] write(3, "1000", 4)         = 4
[pid 18653] close(3)                    = 0
[pid 18653] memfd_create("syzkaller", 0) = 3
[pid 18653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18653] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18653] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18653] close(4)                    = 0
[pid 18653] close(3)                    = 0
[pid 18653] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18653] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18653] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18653] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18653] open("./bus", O_RDONLY)     = 3
[pid 18653] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18653] exit_group(0)               = ?
[pid 18653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18654
./strace-static-x86_64: Process 18654 attached
[pid 18654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18654] setpgid(0, 0)               = 0
[pid 18654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18654] write(3, "1000", 4)         = 4
[pid 18654] close(3)                    = 0
[pid 18654] memfd_create("syzkaller", 0) = 3
[pid 18654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18654] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18654] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18654] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18654] close(4)                    = 0
[pid 18654] close(3)                    = 0
[pid 18654] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18654] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18654] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18654] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18654] open("./bus", O_RDONLY)     = 3
[pid 18654] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18654] exit_group(0)               = ?
[pid 18654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18655
./strace-static-x86_64: Process 18655 attached
[pid 18655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18655] setpgid(0, 0)               = 0
[pid 18655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18655] write(3, "1000", 4)         = 4
[pid 18655] close(3)                    = 0
[pid 18655] memfd_create("syzkaller", 0) = 3
[pid 18655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18655] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18655] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18655] close(4)                    = 0
[pid 18655] close(3)                    = 0
[pid 18655] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18655] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18655] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18655] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18655] open("./bus", O_RDONLY)     = 3
[pid 18655] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18655] exit_group(0)               = ?
[pid 18655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18655, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18656 attached
, child_tidptr=0x55555606b5d0) = 18656
[pid 18656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18656] setpgid(0, 0)               = 0
[pid 18656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18656] write(3, "1000", 4)         = 4
[pid 18656] close(3)                    = 0
[pid 18656] memfd_create("syzkaller", 0) = 3
[pid 18656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18656] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18656] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18656] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18656] close(4)                    = 0
[pid 18656] close(3)                    = 0
[pid 18656] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18656] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18656] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18656] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18656] open("./bus", O_RDONLY)     = 3
[pid 18656] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18656] exit_group(0)               = ?
[pid 18656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18657
./strace-static-x86_64: Process 18657 attached
[pid 18657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18657] setpgid(0, 0)               = 0
[pid 18657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18657] write(3, "1000", 4)         = 4
[pid 18657] close(3)                    = 0
[pid 18657] memfd_create("syzkaller", 0) = 3
[pid 18657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18657] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18657] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18657] close(4)                    = 0
[pid 18657] close(3)                    = 0
[pid 18657] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18657] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18657] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18657] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18657] open("./bus", O_RDONLY)     = 3
[pid 18657] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18657] exit_group(0)               = ?
[pid 18657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18658 attached
, child_tidptr=0x55555606b5d0) = 18658
[pid 18658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18658] setpgid(0, 0)               = 0
[pid 18658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18658] write(3, "1000", 4)         = 4
[pid 18658] close(3)                    = 0
[pid 18658] memfd_create("syzkaller", 0) = 3
[pid 18658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18658] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18658] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18658] close(4)                    = 0
[pid 18658] close(3)                    = 0
[pid 18658] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18658] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18658] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18658] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18658] open("./bus", O_RDONLY)     = 3
[pid 18658] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18658] exit_group(0)               = ?
[pid 18658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18659
./strace-static-x86_64: Process 18659 attached
[pid 18659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18659] setpgid(0, 0)               = 0
[pid 18659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18659] write(3, "1000", 4)         = 4
[pid 18659] close(3)                    = 0
[pid 18659] memfd_create("syzkaller", 0) = 3
[pid 18659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18659] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18659] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18659] close(4)                    = 0
[pid 18659] close(3)                    = 0
[pid 18659] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18659] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18659] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18659] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18659] open("./bus", O_RDONLY)     = 3
[pid 18659] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18659] exit_group(0)               = ?
[pid 18659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18659, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18660
./strace-static-x86_64: Process 18660 attached
[pid 18660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18660] setpgid(0, 0)               = 0
[pid 18660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18660] write(3, "1000", 4)         = 4
[pid 18660] close(3)                    = 0
[pid 18660] memfd_create("syzkaller", 0) = 3
[pid 18660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18660] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18660] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18660] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18660] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18660] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18660] close(4)                    = 0
[pid 18660] close(3)                    = 0
[pid 18660] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18660] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18660] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18660] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18660] open("./bus", O_RDONLY)     = 3
[pid 18660] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18660] exit_group(0)               = ?
[pid 18660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18661 attached
, child_tidptr=0x55555606b5d0) = 18661
[pid 18661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18661] setpgid(0, 0)               = 0
[pid 18661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18661] write(3, "1000", 4)         = 4
[pid 18661] close(3)                    = 0
[pid 18661] memfd_create("syzkaller", 0) = 3
[pid 18661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18661] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18661] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18661] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18661] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18661] close(4)                    = 0
[pid 18661] close(3)                    = 0
[pid 18661] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18661] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18661] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18661] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18661] open("./bus", O_RDONLY)     = 3
[pid 18661] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18661] exit_group(0)               = ?
[pid 18661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18661, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18662 attached
, child_tidptr=0x55555606b5d0) = 18662
[pid 18662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18662] setpgid(0, 0)               = 0
[pid 18662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18662] write(3, "1000", 4)         = 4
[pid 18662] close(3)                    = 0
[pid 18662] memfd_create("syzkaller", 0) = 3
[pid 18662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18662] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18662] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18662] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18662] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18662] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18662] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18662] close(4)                    = 0
[pid 18662] close(3)                    = 0
[pid 18662] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18662] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18662] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18662] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18662] open("./bus", O_RDONLY)     = 3
[pid 18662] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18662] exit_group(0)               = ?
[pid 18662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18663 attached
, child_tidptr=0x55555606b5d0) = 18663
[pid 18663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18663] setpgid(0, 0)               = 0
[pid 18663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18663] write(3, "1000", 4)         = 4
[pid 18663] close(3)                    = 0
[pid 18663] memfd_create("syzkaller", 0) = 3
[pid 18663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18663] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18663] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18663] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18663] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18663] close(4)                    = 0
[pid 18663] close(3)                    = 0
[pid 18663] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18663] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18663] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18663] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18663] open("./bus", O_RDONLY)     = 3
[pid 18663] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18663] exit_group(0)               = ?
[pid 18663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18663, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18664
./strace-static-x86_64: Process 18664 attached
[pid 18664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18664] setpgid(0, 0)               = 0
[pid 18664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18664] write(3, "1000", 4)         = 4
[pid 18664] close(3)                    = 0
[pid 18664] memfd_create("syzkaller", 0) = 3
[pid 18664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18664] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18664] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18664] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18664] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18664] close(4)                    = 0
[pid 18664] close(3)                    = 0
[pid 18664] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18664] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18664] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18664] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18664] open("./bus", O_RDONLY)     = 3
[pid 18664] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18664] exit_group(0)               = ?
[pid 18664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18665
./strace-static-x86_64: Process 18665 attached
[pid 18665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18665] setpgid(0, 0)               = 0
[pid 18665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18665] write(3, "1000", 4)         = 4
[pid 18665] close(3)                    = 0
[pid 18665] memfd_create("syzkaller", 0) = 3
[pid 18665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18665] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18665] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18665] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18665] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18665] close(4)                    = 0
[pid 18665] close(3)                    = 0
[pid 18665] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18665] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18665] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18665] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18665] open("./bus", O_RDONLY)     = 3
[pid 18665] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18665] exit_group(0)               = ?
[pid 18665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18665, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18666
./strace-static-x86_64: Process 18666 attached
[pid 18666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18666] setpgid(0, 0)               = 0
[pid 18666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18666] write(3, "1000", 4)         = 4
[pid 18666] close(3)                    = 0
[pid 18666] memfd_create("syzkaller", 0) = 3
[pid 18666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18666] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18666] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18666] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18666] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18666] close(4)                    = 0
[pid 18666] close(3)                    = 0
[pid 18666] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18666] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18666] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18666] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18666] open("./bus", O_RDONLY)     = 3
[pid 18666] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18666] exit_group(0)               = ?
[pid 18666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18666, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18667
./strace-static-x86_64: Process 18667 attached
[pid 18667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18667] setpgid(0, 0)               = 0
[pid 18667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18667] write(3, "1000", 4)         = 4
[pid 18667] close(3)                    = 0
[pid 18667] memfd_create("syzkaller", 0) = 3
[pid 18667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18667] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18667] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18667] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18667] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18667] close(4)                    = 0
[pid 18667] close(3)                    = 0
[pid 18667] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18667] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18667] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18667] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18667] open("./bus", O_RDONLY)     = 3
[pid 18667] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18667] exit_group(0)               = ?
[pid 18667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18667, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18668 attached
, child_tidptr=0x55555606b5d0) = 18668
[pid 18668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18668] setpgid(0, 0)               = 0
[pid 18668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18668] write(3, "1000", 4)         = 4
[pid 18668] close(3)                    = 0
[pid 18668] memfd_create("syzkaller", 0) = 3
[pid 18668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18668] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18668] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18668] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18668] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18668] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18668] close(4)                    = 0
[pid 18668] close(3)                    = 0
[pid 18668] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18668] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18668] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18668] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18668] open("./bus", O_RDONLY)     = 3
[pid 18668] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18668] exit_group(0)               = ?
[pid 18668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18669
./strace-static-x86_64: Process 18669 attached
[pid 18669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18669] setpgid(0, 0)               = 0
[pid 18669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18669] write(3, "1000", 4)         = 4
[pid 18669] close(3)                    = 0
[pid 18669] memfd_create("syzkaller", 0) = 3
[pid 18669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18669] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18669] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18669] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18669] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18669] close(4)                    = 0
[pid 18669] close(3)                    = 0
[pid 18669] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18669] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18669] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18669] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18669] open("./bus", O_RDONLY)     = 3
[pid 18669] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18669] exit_group(0)               = ?
[pid 18669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18669, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18670 attached
, child_tidptr=0x55555606b5d0) = 18670
[pid 18670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18670] setpgid(0, 0)               = 0
[pid 18670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18670] write(3, "1000", 4)         = 4
[pid 18670] close(3)                    = 0
[pid 18670] memfd_create("syzkaller", 0) = 3
[pid 18670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18670] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18670] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18670] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18670] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18670] close(4)                    = 0
[pid 18670] close(3)                    = 0
[pid 18670] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18670] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18670] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18670] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18670] open("./bus", O_RDONLY)     = 3
[pid 18670] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18670] exit_group(0)               = ?
[pid 18670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18671
./strace-static-x86_64: Process 18671 attached
[pid 18671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18671] setpgid(0, 0)               = 0
[pid 18671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18671] write(3, "1000", 4)         = 4
[pid 18671] close(3)                    = 0
[pid 18671] memfd_create("syzkaller", 0) = 3
[pid 18671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18671] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18671] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18671] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18671] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18671] close(4)                    = 0
[pid 18671] close(3)                    = 0
[pid 18671] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18671] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18671] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18671] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18671] open("./bus", O_RDONLY)     = 3
[pid 18671] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18671] exit_group(0)               = ?
[pid 18671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18671, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18672 attached
, child_tidptr=0x55555606b5d0) = 18672
[pid 18672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18672] setpgid(0, 0)               = 0
[pid 18672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18672] write(3, "1000", 4)         = 4
[pid 18672] close(3)                    = 0
[pid 18672] memfd_create("syzkaller", 0) = 3
[pid 18672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18672] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18672] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18672] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18672] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18672] close(4)                    = 0
[pid 18672] close(3)                    = 0
[pid 18672] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18672] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18672] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18672] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18672] open("./bus", O_RDONLY)     = 3
[pid 18672] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18672] exit_group(0)               = ?
[pid 18672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18673
./strace-static-x86_64: Process 18673 attached
[pid 18673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18673] setpgid(0, 0)               = 0
[pid 18673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18673] write(3, "1000", 4)         = 4
[pid 18673] close(3)                    = 0
[pid 18673] memfd_create("syzkaller", 0) = 3
[pid 18673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18673] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18673] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18673] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18673] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18673] close(4)                    = 0
[pid 18673] close(3)                    = 0
[pid 18673] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18673] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18673] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18673] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18673] open("./bus", O_RDONLY)     = 3
[pid 18673] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18673] exit_group(0)               = ?
[pid 18673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18673, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18674
./strace-static-x86_64: Process 18674 attached
[pid 18674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18674] setpgid(0, 0)               = 0
[pid 18674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18674] write(3, "1000", 4)         = 4
[pid 18674] close(3)                    = 0
[pid 18674] memfd_create("syzkaller", 0) = 3
[pid 18674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18674] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18674] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18674] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18674] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18674] close(4)                    = 0
[pid 18674] close(3)                    = 0
[pid 18674] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18674] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18674] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18674] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18674] open("./bus", O_RDONLY)     = 3
[pid 18674] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18674] exit_group(0)               = ?
[pid 18674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18675 attached
, child_tidptr=0x55555606b5d0) = 18675
[pid 18675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18675] setpgid(0, 0)               = 0
[pid 18675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18675] write(3, "1000", 4)         = 4
[pid 18675] close(3)                    = 0
[pid 18675] memfd_create("syzkaller", 0) = 3
[pid 18675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18675] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18675] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18675] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18675] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18675] close(4)                    = 0
[pid 18675] close(3)                    = 0
[pid 18675] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18675] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18675] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18675] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18675] open("./bus", O_RDONLY)     = 3
[pid 18675] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18675] exit_group(0)               = ?
[pid 18675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18675, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18676
./strace-static-x86_64: Process 18676 attached
[pid 18676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18676] setpgid(0, 0)               = 0
[pid 18676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18676] write(3, "1000", 4)         = 4
[pid 18676] close(3)                    = 0
[pid 18676] memfd_create("syzkaller", 0) = 3
[pid 18676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18676] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18676] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18676] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18676] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18676] close(4)                    = 0
[pid 18676] close(3)                    = 0
[pid 18676] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18676] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18676] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18676] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18676] open("./bus", O_RDONLY)     = 3
[pid 18676] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18676] exit_group(0)               = ?
[pid 18676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18676, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18677 attached
, child_tidptr=0x55555606b5d0) = 18677
[pid 18677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18677] setpgid(0, 0)               = 0
[pid 18677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18677] write(3, "1000", 4)         = 4
[pid 18677] close(3)                    = 0
[pid 18677] memfd_create("syzkaller", 0) = 3
[pid 18677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18677] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18677] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18677] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18677] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18677] close(4)                    = 0
[pid 18677] close(3)                    = 0
[pid 18677] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18677] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18677] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18677] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18677] open("./bus", O_RDONLY)     = 3
[pid 18677] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18677] exit_group(0)               = ?
[pid 18677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18677, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18678 attached
, child_tidptr=0x55555606b5d0) = 18678
[pid 18678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18678] setpgid(0, 0)               = 0
[pid 18678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18678] write(3, "1000", 4)         = 4
[pid 18678] close(3)                    = 0
[pid 18678] memfd_create("syzkaller", 0) = 3
[pid 18678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18678] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18678] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18678] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18678] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18678] close(4)                    = 0
[pid 18678] close(3)                    = 0
[pid 18678] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18678] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18678] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18678] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18678] open("./bus", O_RDONLY)     = 3
[pid 18678] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18678] exit_group(0)               = ?
[pid 18678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18678, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18679 attached
, child_tidptr=0x55555606b5d0) = 18679
[pid 18679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18679] setpgid(0, 0)               = 0
[pid 18679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18679] write(3, "1000", 4)         = 4
[pid 18679] close(3)                    = 0
[pid 18679] memfd_create("syzkaller", 0) = 3
[pid 18679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18679] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18679] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18679] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18679] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18679] close(4)                    = 0
[pid 18679] close(3)                    = 0
[pid 18679] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18679] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18679] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18679] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18679] open("./bus", O_RDONLY)     = 3
[pid 18679] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18679] exit_group(0)               = ?
[pid 18679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18679, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18680 attached
, child_tidptr=0x55555606b5d0) = 18680
[pid 18680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18680] setpgid(0, 0)               = 0
[pid 18680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18680] write(3, "1000", 4)         = 4
[pid 18680] close(3)                    = 0
[pid 18680] memfd_create("syzkaller", 0) = 3
[pid 18680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18680] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18680] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18680] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18680] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18680] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18680] close(4)                    = 0
[pid 18680] close(3)                    = 0
[pid 18680] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18680] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18680] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18680] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18680] open("./bus", O_RDONLY)     = 3
[pid 18680] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18680] exit_group(0)               = ?
[pid 18680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18681
./strace-static-x86_64: Process 18681 attached
[pid 18681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18681] setpgid(0, 0)               = 0
[pid 18681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18681] write(3, "1000", 4)         = 4
[pid 18681] close(3)                    = 0
[pid 18681] memfd_create("syzkaller", 0) = 3
[pid 18681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18681] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18681] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18681] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18681] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18681] close(4)                    = 0
[pid 18681] close(3)                    = 0
[pid 18681] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18681] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18681] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18681] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18681] open("./bus", O_RDONLY)     = 3
[pid 18681] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18681] exit_group(0)               = ?
[pid 18681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18681, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18682
./strace-static-x86_64: Process 18682 attached
[pid 18682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18682] setpgid(0, 0)               = 0
[pid 18682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18682] write(3, "1000", 4)         = 4
[pid 18682] close(3)                    = 0
[pid 18682] memfd_create("syzkaller", 0) = 3
[pid 18682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18682] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18682] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18682] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18682] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18682] close(4)                    = 0
[pid 18682] close(3)                    = 0
[pid 18682] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18682] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18682] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18682] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18682] open("./bus", O_RDONLY)     = 3
[pid 18682] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18682] exit_group(0)               = ?
[pid 18682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18683
./strace-static-x86_64: Process 18683 attached
[pid 18683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18683] setpgid(0, 0)               = 0
[pid 18683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18683] write(3, "1000", 4)         = 4
[pid 18683] close(3)                    = 0
[pid 18683] memfd_create("syzkaller", 0) = 3
[pid 18683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18683] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18683] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18683] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18683] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18683] close(4)                    = 0
[pid 18683] close(3)                    = 0
[pid 18683] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18683] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18683] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18683] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18683] open("./bus", O_RDONLY)     = 3
[pid 18683] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18683] exit_group(0)               = ?
[pid 18683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18683, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18684
./strace-static-x86_64: Process 18684 attached
[pid 18684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18684] setpgid(0, 0)               = 0
[pid 18684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18684] write(3, "1000", 4)         = 4
[pid 18684] close(3)                    = 0
[pid 18684] memfd_create("syzkaller", 0) = 3
[pid 18684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18684] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18684] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18684] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18684] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18684] close(4)                    = 0
[pid 18684] close(3)                    = 0
[pid 18684] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18684] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18684] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18684] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18684] open("./bus", O_RDONLY)     = 3
[pid 18684] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18684] exit_group(0)               = ?
[pid 18684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18684, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18685
./strace-static-x86_64: Process 18685 attached
[pid 18685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18685] setpgid(0, 0)               = 0
[pid 18685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18685] write(3, "1000", 4)         = 4
[pid 18685] close(3)                    = 0
[pid 18685] memfd_create("syzkaller", 0) = 3
[pid 18685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18685] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18685] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18685] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18685] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18685] close(4)                    = 0
[pid 18685] close(3)                    = 0
[pid 18685] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18685] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18685] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18685] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18685] open("./bus", O_RDONLY)     = 3
[pid 18685] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18685] exit_group(0)               = ?
[pid 18685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18685, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18686
./strace-static-x86_64: Process 18686 attached
[pid 18686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18686] setpgid(0, 0)               = 0
[pid 18686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18686] write(3, "1000", 4)         = 4
[pid 18686] close(3)                    = 0
[pid 18686] memfd_create("syzkaller", 0) = 3
[pid 18686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18686] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18686] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18686] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18686] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18686] close(4)                    = 0
[pid 18686] close(3)                    = 0
[pid 18686] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18686] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18686] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18686] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18686] open("./bus", O_RDONLY)     = 3
[pid 18686] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18686] exit_group(0)               = ?
[pid 18686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18687
./strace-static-x86_64: Process 18687 attached
[pid 18687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18687] setpgid(0, 0)               = 0
[pid 18687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18687] write(3, "1000", 4)         = 4
[pid 18687] close(3)                    = 0
[pid 18687] memfd_create("syzkaller", 0) = 3
[pid 18687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18687] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18687] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18687] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18687] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18687] close(4)                    = 0
[pid 18687] close(3)                    = 0
[pid 18687] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18687] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18687] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18687] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18687] open("./bus", O_RDONLY)     = 3
[pid 18687] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18687] exit_group(0)               = ?
[pid 18687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18687, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18688 attached
, child_tidptr=0x55555606b5d0) = 18688
[pid 18688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18688] setpgid(0, 0)               = 0
[pid 18688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18688] write(3, "1000", 4)         = 4
[pid 18688] close(3)                    = 0
[pid 18688] memfd_create("syzkaller", 0) = 3
[pid 18688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18688] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18688] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18688] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18688] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18688] close(4)                    = 0
[pid 18688] close(3)                    = 0
[pid 18688] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18688] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18688] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18688] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18688] open("./bus", O_RDONLY)     = 3
[pid 18688] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18688] exit_group(0)               = ?
[pid 18688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18688, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18689
./strace-static-x86_64: Process 18689 attached
[pid 18689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18689] setpgid(0, 0)               = 0
[pid 18689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18689] write(3, "1000", 4)         = 4
[pid 18689] close(3)                    = 0
[pid 18689] memfd_create("syzkaller", 0) = 3
[pid 18689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18689] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18689] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18689] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18689] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18689] close(4)                    = 0
[pid 18689] close(3)                    = 0
[pid 18689] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18689] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18689] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18689] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18689] open("./bus", O_RDONLY)     = 3
[pid 18689] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18689] exit_group(0)               = ?
[pid 18689] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18689, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18690 attached
 <unfinished ...>
[pid 18690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18690] setpgid(0, 0)               = 0
[pid 18690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18690] write(3, "1000", 4)         = 4
[pid 18690] close(3)                    = 0
[pid 18690] memfd_create("syzkaller", 0 <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18690
[pid 18690] <... memfd_create resumed>) = 3
[pid 18690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18690] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18690] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18690] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18690] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18690] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18690] close(4)                    = 0
[pid 18690] close(3)                    = 0
[pid 18690] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18690] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18690] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18690] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18690] open("./bus", O_RDONLY)     = 3
[pid 18690] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18690] exit_group(0)               = ?
[pid 18690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18691
./strace-static-x86_64: Process 18691 attached
[pid 18691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18691] setpgid(0, 0)               = 0
[pid 18691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18691] write(3, "1000", 4)         = 4
[pid 18691] close(3)                    = 0
[pid 18691] memfd_create("syzkaller", 0) = 3
[pid 18691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18691] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18691] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18691] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18691] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18691] close(4)                    = 0
[pid 18691] close(3)                    = 0
[pid 18691] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18691] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18691] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18691] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18691] open("./bus", O_RDONLY)     = 3
[pid 18691] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18691] exit_group(0)               = ?
[pid 18691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18691, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18692 attached
, child_tidptr=0x55555606b5d0) = 18692
[pid 18692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18692] setpgid(0, 0)               = 0
[pid 18692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18692] write(3, "1000", 4)         = 4
[pid 18692] close(3)                    = 0
[pid 18692] memfd_create("syzkaller", 0) = 3
[pid 18692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18692] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18692] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18692] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18692] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18692] close(4)                    = 0
[pid 18692] close(3)                    = 0
[pid 18692] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18692] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18692] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18692] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18692] open("./bus", O_RDONLY)     = 3
[pid 18692] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18692] exit_group(0)               = ?
[pid 18692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18693
./strace-static-x86_64: Process 18693 attached
[pid 18693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18693] setpgid(0, 0)               = 0
[pid 18693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18693] write(3, "1000", 4)         = 4
[pid 18693] close(3)                    = 0
[pid 18693] memfd_create("syzkaller", 0) = 3
[pid 18693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18693] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18693] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18693] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18693] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18693] close(4)                    = 0
[pid 18693] close(3)                    = 0
[pid 18693] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18693] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18693] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18693] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18693] open("./bus", O_RDONLY)     = 3
[pid 18693] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18693] exit_group(0)               = ?
[pid 18693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18693, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18694
./strace-static-x86_64: Process 18694 attached
[pid 18694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18694] setpgid(0, 0)               = 0
[pid 18694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18694] write(3, "1000", 4)         = 4
[pid 18694] close(3)                    = 0
[pid 18694] memfd_create("syzkaller", 0) = 3
[pid 18694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18694] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18694] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18694] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18694] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18694] close(4)                    = 0
[pid 18694] close(3)                    = 0
[pid 18694] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18694] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18694] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18694] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18694] open("./bus", O_RDONLY)     = 3
[pid 18694] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18694] exit_group(0)               = ?
[pid 18694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18695 attached
, child_tidptr=0x55555606b5d0) = 18695
[pid 18695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18695] setpgid(0, 0)               = 0
[pid 18695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18695] write(3, "1000", 4)         = 4
[pid 18695] close(3)                    = 0
[pid 18695] memfd_create("syzkaller", 0) = 3
[pid 18695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18695] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18695] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18695] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18695] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18695] close(4)                    = 0
[pid 18695] close(3)                    = 0
[pid 18695] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18695] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18695] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18695] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18695] open("./bus", O_RDONLY)     = 3
[pid 18695] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18695] exit_group(0)               = ?
[pid 18695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18695, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18696 attached
 <unfinished ...>
[pid 18696] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18696
[pid 18696] <... prctl resumed>)        = 0
[pid 18696] setpgid(0, 0)               = 0
[pid 18696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18696] write(3, "1000", 4)         = 4
[pid 18696] close(3)                    = 0
[pid 18696] memfd_create("syzkaller", 0) = 3
[pid 18696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18696] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18696] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18696] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18696] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18696] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18696] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18696] close(4)                    = 0
[pid 18696] close(3)                    = 0
[pid 18696] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18696] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18696] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18696] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18696] open("./bus", O_RDONLY)     = 3
[pid 18696] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18696] exit_group(0)               = ?
[pid 18696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18697
./strace-static-x86_64: Process 18697 attached
[pid 18697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18697] setpgid(0, 0)               = 0
[pid 18697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18697] write(3, "1000", 4)         = 4
[pid 18697] close(3)                    = 0
[pid 18697] memfd_create("syzkaller", 0) = 3
[pid 18697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18697] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18697] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18697] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18697] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18697] close(4)                    = 0
[pid 18697] close(3)                    = 0
[pid 18697] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18697] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18697] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18697] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18697] open("./bus", O_RDONLY)     = 3
[pid 18697] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18697] exit_group(0)               = ?
[pid 18697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18697, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18698 attached
, child_tidptr=0x55555606b5d0) = 18698
[pid 18698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18698] setpgid(0, 0)               = 0
[pid 18698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18698] write(3, "1000", 4)         = 4
[pid 18698] close(3)                    = 0
[pid 18698] memfd_create("syzkaller", 0) = 3
[pid 18698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18698] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18698] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18698] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18698] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18698] close(4)                    = 0
[pid 18698] close(3)                    = 0
[pid 18698] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18698] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18698] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18698] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18698] open("./bus", O_RDONLY)     = 3
[pid 18698] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18698] exit_group(0)               = ?
[pid 18698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18698, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18699 attached
, child_tidptr=0x55555606b5d0) = 18699
[pid 18699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18699] setpgid(0, 0)               = 0
[pid 18699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18699] write(3, "1000", 4)         = 4
[pid 18699] close(3)                    = 0
[pid 18699] memfd_create("syzkaller", 0) = 3
[pid 18699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18699] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18699] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18699] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18699] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18699] close(4)                    = 0
[pid 18699] close(3)                    = 0
[pid 18699] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18699] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18699] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18699] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18699] open("./bus", O_RDONLY)     = 3
[pid 18699] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18699] exit_group(0)               = ?
[pid 18699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18699, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18700 attached
, child_tidptr=0x55555606b5d0) = 18700
[pid 18700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18700] setpgid(0, 0)               = 0
[pid 18700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18700] write(3, "1000", 4)         = 4
[pid 18700] close(3)                    = 0
[pid 18700] memfd_create("syzkaller", 0) = 3
[pid 18700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18700] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18700] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18700] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18700] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18700] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18700] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18700] close(4)                    = 0
[pid 18700] close(3)                    = 0
[pid 18700] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18700] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18700] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18700] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18700] open("./bus", O_RDONLY)     = 3
[pid 18700] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18700] exit_group(0)               = ?
[pid 18700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18701 attached
, child_tidptr=0x55555606b5d0) = 18701
[pid 18701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18701] setpgid(0, 0)               = 0
[pid 18701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18701] write(3, "1000", 4)         = 4
[pid 18701] close(3)                    = 0
[pid 18701] memfd_create("syzkaller", 0) = 3
[pid 18701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18701] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18701] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18701] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18701] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18701] close(4)                    = 0
[pid 18701] close(3)                    = 0
[pid 18701] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18701] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18701] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18701] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18701] open("./bus", O_RDONLY)     = 3
[pid 18701] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18701] exit_group(0)               = ?
[pid 18701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18701, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18702
./strace-static-x86_64: Process 18702 attached
[pid 18702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18702] setpgid(0, 0)               = 0
[pid 18702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18702] write(3, "1000", 4)         = 4
[pid 18702] close(3)                    = 0
[pid 18702] memfd_create("syzkaller", 0) = 3
[pid 18702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18702] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18702] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18702] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18702] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18702] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18702] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18702] close(4)                    = 0
[pid 18702] close(3)                    = 0
[pid 18702] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18702] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18702] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18702] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18702] open("./bus", O_RDONLY)     = 3
[pid 18702] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18702] exit_group(0)               = ?
[pid 18702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18703 attached
, child_tidptr=0x55555606b5d0) = 18703
[pid 18703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18703] setpgid(0, 0)               = 0
[pid 18703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18703] write(3, "1000", 4)         = 4
[pid 18703] close(3)                    = 0
[pid 18703] memfd_create("syzkaller", 0) = 3
[pid 18703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18703] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18703] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18703] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18703] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18703] close(4)                    = 0
[pid 18703] close(3)                    = 0
[pid 18703] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18703] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18703] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18703] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18703] open("./bus", O_RDONLY)     = 3
[pid 18703] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18703] exit_group(0)               = ?
[pid 18703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18703, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18704
./strace-static-x86_64: Process 18704 attached
[pid 18704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18704] setpgid(0, 0)               = 0
[pid 18704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18704] write(3, "1000", 4)         = 4
[pid 18704] close(3)                    = 0
[pid 18704] memfd_create("syzkaller", 0) = 3
[pid 18704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18704] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18704] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18704] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18704] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18704] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18704] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18704] close(4)                    = 0
[pid 18704] close(3)                    = 0
[pid 18704] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18704] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18704] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18704] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18704] open("./bus", O_RDONLY)     = 3
[pid 18704] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18704] exit_group(0)               = ?
[pid 18704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18705
./strace-static-x86_64: Process 18705 attached
[pid 18705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18705] setpgid(0, 0)               = 0
[pid 18705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18705] write(3, "1000", 4)         = 4
[pid 18705] close(3)                    = 0
[pid 18705] memfd_create("syzkaller", 0) = 3
[pid 18705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18705] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18705] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18705] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18705] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18705] close(4)                    = 0
[pid 18705] close(3)                    = 0
[pid 18705] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18705] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18705] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18705] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18705] open("./bus", O_RDONLY)     = 3
[pid 18705] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18705] exit_group(0)               = ?
[pid 18705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18705, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18706 attached
, child_tidptr=0x55555606b5d0) = 18706
[pid 18706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18706] setpgid(0, 0)               = 0
[pid 18706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18706] write(3, "1000", 4)         = 4
[pid 18706] close(3)                    = 0
[pid 18706] memfd_create("syzkaller", 0) = 3
[pid 18706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18706] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18706] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18706] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18706] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18706] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18706] close(4)                    = 0
[pid 18706] close(3)                    = 0
[pid 18706] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18706] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18706] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18706] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18706] open("./bus", O_RDONLY)     = 3
[pid 18706] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18706] exit_group(0)               = ?
[pid 18706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18706, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18707 attached
, child_tidptr=0x55555606b5d0) = 18707
[pid 18707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18707] setpgid(0, 0)               = 0
[pid 18707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18707] write(3, "1000", 4)         = 4
[pid 18707] close(3)                    = 0
[pid 18707] memfd_create("syzkaller", 0) = 3
[pid 18707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18707] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18707] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18707] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18707] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18707] close(4)                    = 0
[pid 18707] close(3)                    = 0
[pid 18707] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18707] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18707] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18707] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18707] open("./bus", O_RDONLY)     = 3
[pid 18707] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18707] exit_group(0)               = ?
[pid 18707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18707, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18708
./strace-static-x86_64: Process 18708 attached
[pid 18708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18708] setpgid(0, 0)               = 0
[pid 18708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18708] write(3, "1000", 4)         = 4
[pid 18708] close(3)                    = 0
[pid 18708] memfd_create("syzkaller", 0) = 3
[pid 18708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18708] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18708] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18708] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18708] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18708] close(4)                    = 0
[pid 18708] close(3)                    = 0
[pid 18708] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18708] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18708] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18708] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18708] open("./bus", O_RDONLY)     = 3
[pid 18708] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18708] exit_group(0)               = ?
[pid 18708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18708, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18709
./strace-static-x86_64: Process 18709 attached
[pid 18709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18709] setpgid(0, 0)               = 0
[pid 18709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18709] write(3, "1000", 4)         = 4
[pid 18709] close(3)                    = 0
[pid 18709] memfd_create("syzkaller", 0) = 3
[pid 18709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18709] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18709] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18709] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18709] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18709] close(4)                    = 0
[pid 18709] close(3)                    = 0
[pid 18709] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18709] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18709] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18709] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18709] open("./bus", O_RDONLY)     = 3
[pid 18709] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18709] exit_group(0)               = ?
[pid 18709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18709, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18710
./strace-static-x86_64: Process 18710 attached
[pid 18710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18710] setpgid(0, 0)               = 0
[pid 18710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18710] write(3, "1000", 4)         = 4
[pid 18710] close(3)                    = 0
[pid 18710] memfd_create("syzkaller", 0) = 3
[pid 18710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18710] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18710] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18710] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18710] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18710] close(4)                    = 0
[pid 18710] close(3)                    = 0
[pid 18710] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18710] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18710] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18710] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18710] open("./bus", O_RDONLY)     = 3
[pid 18710] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18710] exit_group(0)               = ?
[pid 18710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18711
./strace-static-x86_64: Process 18711 attached
[pid 18711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18711] setpgid(0, 0)               = 0
[pid 18711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18711] write(3, "1000", 4)         = 4
[pid 18711] close(3)                    = 0
[pid 18711] memfd_create("syzkaller", 0) = 3
[pid 18711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18711] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18711] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18711] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18711] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18711] close(4)                    = 0
[pid 18711] close(3)                    = 0
[pid 18711] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18711] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18711] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18711] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18711] open("./bus", O_RDONLY)     = 3
[pid 18711] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18711] exit_group(0)               = ?
[pid 18711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18711, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18712
./strace-static-x86_64: Process 18712 attached
[pid 18712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18712] setpgid(0, 0)               = 0
[pid 18712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18712] write(3, "1000", 4)         = 4
[pid 18712] close(3)                    = 0
[pid 18712] memfd_create("syzkaller", 0) = 3
[pid 18712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18712] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18712] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18712] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18712] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18712] close(4)                    = 0
[pid 18712] close(3)                    = 0
[pid 18712] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18712] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18712] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18712] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18712] open("./bus", O_RDONLY)     = 3
[pid 18712] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18712] exit_group(0)               = ?
[pid 18712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18713 attached
, child_tidptr=0x55555606b5d0) = 18713
[pid 18713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18713] setpgid(0, 0)               = 0
[pid 18713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18713] write(3, "1000", 4)         = 4
[pid 18713] close(3)                    = 0
[pid 18713] memfd_create("syzkaller", 0) = 3
[pid 18713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18713] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18713] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18713] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18713] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18713] close(4)                    = 0
[pid 18713] close(3)                    = 0
[pid 18713] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18713] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18713] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18713] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18713] open("./bus", O_RDONLY)     = 3
[pid 18713] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18713] exit_group(0)               = ?
[pid 18713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18713, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18714
./strace-static-x86_64: Process 18714 attached
[pid 18714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18714] setpgid(0, 0)               = 0
[pid 18714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18714] write(3, "1000", 4)         = 4
[pid 18714] close(3)                    = 0
[pid 18714] memfd_create("syzkaller", 0) = 3
[pid 18714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18714] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18714] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18714] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18714] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18714] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18714] close(4)                    = 0
[pid 18714] close(3)                    = 0
[pid 18714] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18714] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18714] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18714] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18714] open("./bus", O_RDONLY)     = 3
[pid 18714] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18714] exit_group(0)               = ?
[pid 18714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18714, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18715 attached
, child_tidptr=0x55555606b5d0) = 18715
[pid 18715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18715] setpgid(0, 0)               = 0
[pid 18715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18715] write(3, "1000", 4)         = 4
[pid 18715] close(3)                    = 0
[pid 18715] memfd_create("syzkaller", 0) = 3
[pid 18715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18715] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18715] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18715] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18715] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18715] close(4)                    = 0
[pid 18715] close(3)                    = 0
[pid 18715] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18715] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18715] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18715] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18715] open("./bus", O_RDONLY)     = 3
[pid 18715] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18715] exit_group(0)               = ?
[pid 18715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18715, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18716 attached
, child_tidptr=0x55555606b5d0) = 18716
[pid 18716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18716] setpgid(0, 0)               = 0
[pid 18716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18716] write(3, "1000", 4)         = 4
[pid 18716] close(3)                    = 0
[pid 18716] memfd_create("syzkaller", 0) = 3
[pid 18716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18716] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18716] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18716] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18716] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18716] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18716] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18716] close(4)                    = 0
[pid 18716] close(3)                    = 0
[pid 18716] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18716] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18716] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18716] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18716] open("./bus", O_RDONLY)     = 3
[pid 18716] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18716] exit_group(0)               = ?
[pid 18716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18716, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18717 attached
, child_tidptr=0x55555606b5d0) = 18717
[pid 18717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18717] setpgid(0, 0)               = 0
[pid 18717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18717] write(3, "1000", 4)         = 4
[pid 18717] close(3)                    = 0
[pid 18717] memfd_create("syzkaller", 0) = 3
[pid 18717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18717] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18717] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18717] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18717] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18717] close(4)                    = 0
[pid 18717] close(3)                    = 0
[pid 18717] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18717] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18717] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18717] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18717] open("./bus", O_RDONLY)     = 3
[pid 18717] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18717] exit_group(0)               = ?
[pid 18717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18717, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18718 attached
, child_tidptr=0x55555606b5d0) = 18718
[pid 18718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18718] setpgid(0, 0)               = 0
[pid 18718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18718] write(3, "1000", 4)         = 4
[pid 18718] close(3)                    = 0
[pid 18718] memfd_create("syzkaller", 0) = 3
[pid 18718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18718] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18718] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18718] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18718] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18718] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18718] close(4)                    = 0
[pid 18718] close(3)                    = 0
[pid 18718] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18718] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18718] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18718] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18718] open("./bus", O_RDONLY)     = 3
[pid 18718] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18718] exit_group(0)               = ?
[pid 18718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18719 attached
, child_tidptr=0x55555606b5d0) = 18719
[pid 18719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18719] setpgid(0, 0)               = 0
[pid 18719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18719] write(3, "1000", 4)         = 4
[pid 18719] close(3)                    = 0
[pid 18719] memfd_create("syzkaller", 0) = 3
[pid 18719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18719] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18719] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18719] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18719] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18719] close(4)                    = 0
[pid 18719] close(3)                    = 0
[pid 18719] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18719] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18719] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18719] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18719] open("./bus", O_RDONLY)     = 3
[pid 18719] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18719] exit_group(0)               = ?
[pid 18719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18720
./strace-static-x86_64: Process 18720 attached
[pid 18720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18720] setpgid(0, 0)               = 0
[pid 18720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18720] write(3, "1000", 4)         = 4
[pid 18720] close(3)                    = 0
[pid 18720] memfd_create("syzkaller", 0) = 3
[pid 18720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18720] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18720] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18720] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18720] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18720] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18720] close(4)                    = 0
[pid 18720] close(3)                    = 0
[pid 18720] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18720] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18720] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18720] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18720] open("./bus", O_RDONLY)     = 3
[pid 18720] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18720] exit_group(0)               = ?
[pid 18720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18721 attached
, child_tidptr=0x55555606b5d0) = 18721
[pid 18721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18721] setpgid(0, 0)               = 0
[pid 18721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18721] write(3, "1000", 4)         = 4
[pid 18721] close(3)                    = 0
[pid 18721] memfd_create("syzkaller", 0) = 3
[pid 18721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18721] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18721] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18721] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18721] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18721] close(4)                    = 0
[pid 18721] close(3)                    = 0
[pid 18721] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18721] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18721] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18721] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18721] open("./bus", O_RDONLY)     = 3
[pid 18721] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18721] exit_group(0)               = ?
[pid 18721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18722 attached
 <unfinished ...>
[pid 18722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18722] setpgid(0, 0)               = 0
[pid 18722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18722
[pid 18722] <... openat resumed>)       = 3
[pid 18722] write(3, "1000", 4)         = 4
[pid 18722] close(3)                    = 0
[pid 18722] memfd_create("syzkaller", 0) = 3
[pid 18722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18722] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18722] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18722] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18722] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18722] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18722] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18722] close(4)                    = 0
[pid 18722] close(3)                    = 0
[pid 18722] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18722] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18722] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18722] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18722] open("./bus", O_RDONLY)     = 3
[pid 18722] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18722] exit_group(0)               = ?
[pid 18722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18723 attached
 <unfinished ...>
[pid 18723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18723] setpgid(0, 0)               = 0
[pid 18723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18723
[pid 18723] write(3, "1000", 4)         = 4
[pid 18723] close(3)                    = 0
[pid 18723] memfd_create("syzkaller", 0) = 3
[pid 18723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18723] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18723] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18723] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18723] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18723] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18723] close(4)                    = 0
[pid 18723] close(3)                    = 0
[pid 18723] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18723] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18723] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18723] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18723] open("./bus", O_RDONLY)     = 3
[pid 18723] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18723] exit_group(0)               = ?
[pid 18723] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18723, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18724 attached
, child_tidptr=0x55555606b5d0) = 18724
[pid 18724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18724] setpgid(0, 0)               = 0
[pid 18724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18724] write(3, "1000", 4)         = 4
[pid 18724] close(3)                    = 0
[pid 18724] memfd_create("syzkaller", 0) = 3
[pid 18724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18724] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18724] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18724] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18724] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18724] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18724] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18724] close(4)                    = 0
[pid 18724] close(3)                    = 0
[pid 18724] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18724] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18724] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18724] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18724] open("./bus", O_RDONLY)     = 3
[pid 18724] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18724] exit_group(0)               = ?
[pid 18724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18725 attached
 <unfinished ...>
[pid 18725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18725] setpgid(0, 0)               = 0
[pid 18725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18725
[pid 18725] <... openat resumed>)       = 3
[pid 18725] write(3, "1000", 4)         = 4
[pid 18725] close(3)                    = 0
[pid 18725] memfd_create("syzkaller", 0) = 3
[pid 18725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18725] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18725] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18725] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18725] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18725] close(4)                    = 0
[pid 18725] close(3)                    = 0
[pid 18725] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18725] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18725] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18725] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18725] open("./bus", O_RDONLY)     = 3
[pid 18725] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18725] exit_group(0)               = ?
[pid 18725] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18725, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18726
./strace-static-x86_64: Process 18726 attached
[pid 18726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18726] setpgid(0, 0)               = 0
[pid 18726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18726] write(3, "1000", 4)         = 4
[pid 18726] close(3)                    = 0
[pid 18726] memfd_create("syzkaller", 0) = 3
[pid 18726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18726] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18726] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18726] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18726] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18726] close(4)                    = 0
[pid 18726] close(3)                    = 0
[pid 18726] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18726] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18726] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18726] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18726] open("./bus", O_RDONLY)     = 3
[pid 18726] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18726] exit_group(0)               = ?
[pid 18726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18727
./strace-static-x86_64: Process 18727 attached
[pid 18727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18727] setpgid(0, 0)               = 0
[pid 18727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18727] write(3, "1000", 4)         = 4
[pid 18727] close(3)                    = 0
[pid 18727] memfd_create("syzkaller", 0) = 3
[pid 18727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18727] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18727] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18727] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18727] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18727] close(4)                    = 0
[pid 18727] close(3)                    = 0
[pid 18727] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18727] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18727] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18727] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18727] open("./bus", O_RDONLY)     = 3
[pid 18727] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18727] exit_group(0)               = ?
[pid 18727] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18727, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18728 attached
, child_tidptr=0x55555606b5d0) = 18728
[pid 18728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18728] setpgid(0, 0)               = 0
[pid 18728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18728] write(3, "1000", 4)         = 4
[pid 18728] close(3)                    = 0
[pid 18728] memfd_create("syzkaller", 0) = 3
[pid 18728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18728] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18728] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18728] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18728] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18728] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18728] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18728] close(4)                    = 0
[pid 18728] close(3)                    = 0
[pid 18728] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18728] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18728] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18728] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18728] open("./bus", O_RDONLY)     = 3
[pid 18728] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18728] exit_group(0)               = ?
[pid 18728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18728, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18729
./strace-static-x86_64: Process 18729 attached
[pid 18729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18729] setpgid(0, 0)               = 0
[pid 18729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18729] write(3, "1000", 4)         = 4
[pid 18729] close(3)                    = 0
[pid 18729] memfd_create("syzkaller", 0) = 3
[pid 18729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18729] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18729] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18729] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18729] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18729] close(4)                    = 0
[pid 18729] close(3)                    = 0
[pid 18729] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18729] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18729] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18729] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18729] open("./bus", O_RDONLY)     = 3
[pid 18729] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18729] exit_group(0)               = ?
[pid 18729] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18729, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18730
./strace-static-x86_64: Process 18730 attached
[pid 18730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18730] setpgid(0, 0)               = 0
[pid 18730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18730] write(3, "1000", 4)         = 4
[pid 18730] close(3)                    = 0
[pid 18730] memfd_create("syzkaller", 0) = 3
[pid 18730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18730] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18730] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18730] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18730] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18730] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18730] close(4)                    = 0
[pid 18730] close(3)                    = 0
[pid 18730] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18730] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18730] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18730] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18730] open("./bus", O_RDONLY)     = 3
[pid 18730] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18730] exit_group(0)               = ?
[pid 18730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18731
./strace-static-x86_64: Process 18731 attached
[pid 18731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18731] setpgid(0, 0)               = 0
[pid 18731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18731] write(3, "1000", 4)         = 4
[pid 18731] close(3)                    = 0
[pid 18731] memfd_create("syzkaller", 0) = 3
[pid 18731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18731] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18731] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18731] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18731] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18731] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18731] close(4)                    = 0
[pid 18731] close(3)                    = 0
[pid 18731] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18731] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18731] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18731] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18731] open("./bus", O_RDONLY)     = 3
[pid 18731] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18731] exit_group(0)               = ?
[pid 18731] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18731, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18732 attached
 <unfinished ...>
[pid 18732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18732] setpgid(0, 0 <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18732
[pid 18732] <... setpgid resumed>)      = 0
[pid 18732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18732] write(3, "1000", 4)         = 4
[pid 18732] close(3)                    = 0
[pid 18732] memfd_create("syzkaller", 0) = 3
[pid 18732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18732] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18732] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18732] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18732] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18732] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18732] close(4)                    = 0
[pid 18732] close(3)                    = 0
[pid 18732] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18732] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18732] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18732] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18732] open("./bus", O_RDONLY)     = 3
[pid 18732] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18732] exit_group(0)               = ?
[pid 18732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18733 attached
, child_tidptr=0x55555606b5d0) = 18733
[pid 18733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18733] setpgid(0, 0)               = 0
[pid 18733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18733] write(3, "1000", 4)         = 4
[pid 18733] close(3)                    = 0
[pid 18733] memfd_create("syzkaller", 0) = 3
[pid 18733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18733] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18733] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18733] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18733] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18733] close(4)                    = 0
[pid 18733] close(3)                    = 0
[pid 18733] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18733] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18733] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18733] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18733] open("./bus", O_RDONLY)     = 3
[pid 18733] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18733] exit_group(0)               = ?
[pid 18733] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18733, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18734
./strace-static-x86_64: Process 18734 attached
[pid 18734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18734] setpgid(0, 0)               = 0
[pid 18734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18734] write(3, "1000", 4)         = 4
[pid 18734] close(3)                    = 0
[pid 18734] memfd_create("syzkaller", 0) = 3
[pid 18734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18734] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18734] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18734] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18734] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18734] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18734] close(4)                    = 0
[pid 18734] close(3)                    = 0
[pid 18734] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18734] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18734] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18734] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18734] open("./bus", O_RDONLY)     = 3
[pid 18734] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18734] exit_group(0)               = ?
[pid 18734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18735 attached
, child_tidptr=0x55555606b5d0) = 18735
[pid 18735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18735] setpgid(0, 0)               = 0
[pid 18735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18735] write(3, "1000", 4)         = 4
[pid 18735] close(3)                    = 0
[pid 18735] memfd_create("syzkaller", 0) = 3
[pid 18735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18735] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18735] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18735] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18735] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18735] close(4)                    = 0
[pid 18735] close(3)                    = 0
[pid 18735] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18735] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18735] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18735] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18735] open("./bus", O_RDONLY)     = 3
[pid 18735] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18735] exit_group(0)               = ?
[pid 18735] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18736
./strace-static-x86_64: Process 18736 attached
[pid 18736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18736] setpgid(0, 0)               = 0
[pid 18736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18736] write(3, "1000", 4)         = 4
[pid 18736] close(3)                    = 0
[pid 18736] memfd_create("syzkaller", 0) = 3
[pid 18736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18736] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18736] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18736] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18736] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18736] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18736] close(4)                    = 0
[pid 18736] close(3)                    = 0
[pid 18736] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18736] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18736] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18736] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18736] open("./bus", O_RDONLY)     = 3
[pid 18736] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18736] exit_group(0)               = ?
[pid 18736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18737
./strace-static-x86_64: Process 18737 attached
[pid 18737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18737] setpgid(0, 0)               = 0
[pid 18737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18737] write(3, "1000", 4)         = 4
[pid 18737] close(3)                    = 0
[pid 18737] memfd_create("syzkaller", 0) = 3
[pid 18737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18737] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18737] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18737] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18737] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18737] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18737] close(4)                    = 0
[pid 18737] close(3)                    = 0
[pid 18737] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18737] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18737] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18737] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18737] open("./bus", O_RDONLY)     = 3
[pid 18737] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18737] exit_group(0)               = ?
[pid 18737] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18738
./strace-static-x86_64: Process 18738 attached
[pid 18738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18738] setpgid(0, 0)               = 0
[pid 18738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18738] write(3, "1000", 4)         = 4
[pid 18738] close(3)                    = 0
[pid 18738] memfd_create("syzkaller", 0) = 3
[pid 18738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18738] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18738] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18738] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18738] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18738] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18738] close(4)                    = 0
[pid 18738] close(3)                    = 0
[pid 18738] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18738] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18738] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18738] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18738] open("./bus", O_RDONLY)     = 3
[pid 18738] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18738] exit_group(0)               = ?
[pid 18738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18738, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18739 attached
, child_tidptr=0x55555606b5d0) = 18739
[pid 18739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18739] setpgid(0, 0)               = 0
[pid 18739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18739] write(3, "1000", 4)         = 4
[pid 18739] close(3)                    = 0
[pid 18739] memfd_create("syzkaller", 0) = 3
[pid 18739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18739] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18739] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18739] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18739] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18739] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18739] close(4)                    = 0
[pid 18739] close(3)                    = 0
[pid 18739] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18739] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18739] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18739] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18739] open("./bus", O_RDONLY)     = 3
[pid 18739] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18739] exit_group(0)               = ?
[pid 18739] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18740 attached
, child_tidptr=0x55555606b5d0) = 18740
[pid 18740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18740] setpgid(0, 0)               = 0
[pid 18740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18740] write(3, "1000", 4)         = 4
[pid 18740] close(3)                    = 0
[pid 18740] memfd_create("syzkaller", 0) = 3
[pid 18740] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18740] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18740] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18740] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18740] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18740] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18740] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18740] close(4)                    = 0
[pid 18740] close(3)                    = 0
[pid 18740] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18740] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18740] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18740] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18740] open("./bus", O_RDONLY)     = 3
[pid 18740] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18740] exit_group(0)               = ?
[pid 18740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18741
./strace-static-x86_64: Process 18741 attached
[pid 18741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18741] setpgid(0, 0)               = 0
[pid 18741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18741] write(3, "1000", 4)         = 4
[pid 18741] close(3)                    = 0
[pid 18741] memfd_create("syzkaller", 0) = 3
[pid 18741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18741] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18741] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18741] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18741] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18741] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18741] close(4)                    = 0
[pid 18741] close(3)                    = 0
[pid 18741] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18741] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18741] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18741] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18741] open("./bus", O_RDONLY)     = 3
[pid 18741] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18741] exit_group(0)               = ?
[pid 18741] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18742 attached
, child_tidptr=0x55555606b5d0) = 18742
[pid 18742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18742] setpgid(0, 0)               = 0
[pid 18742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18742] write(3, "1000", 4)         = 4
[pid 18742] close(3)                    = 0
[pid 18742] memfd_create("syzkaller", 0) = 3
[pid 18742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18742] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18742] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18742] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18742] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18742] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18742] close(4)                    = 0
[pid 18742] close(3)                    = 0
[pid 18742] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18742] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18742] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18742] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18742] open("./bus", O_RDONLY)     = 3
[pid 18742] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18742] exit_group(0)               = ?
[pid 18742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18743 attached
, child_tidptr=0x55555606b5d0) = 18743
[pid 18743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18743] setpgid(0, 0)               = 0
[pid 18743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18743] write(3, "1000", 4)         = 4
[pid 18743] close(3)                    = 0
[pid 18743] memfd_create("syzkaller", 0) = 3
[pid 18743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18743] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18743] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18743] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18743] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18743] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18743] close(4)                    = 0
[pid 18743] close(3)                    = 0
[pid 18743] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18743] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18743] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18743] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18743] open("./bus", O_RDONLY)     = 3
[pid 18743] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18743] exit_group(0)               = ?
[pid 18743] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18744
./strace-static-x86_64: Process 18744 attached
[pid 18744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18744] setpgid(0, 0)               = 0
[pid 18744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18744] write(3, "1000", 4)         = 4
[pid 18744] close(3)                    = 0
[pid 18744] memfd_create("syzkaller", 0) = 3
[pid 18744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18744] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18744] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18744] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18744] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18744] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18744] close(4)                    = 0
[pid 18744] close(3)                    = 0
[pid 18744] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18744] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18744] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18744] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18744] open("./bus", O_RDONLY)     = 3
[pid 18744] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18744] exit_group(0)               = ?
[pid 18744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18745
./strace-static-x86_64: Process 18745 attached
[pid 18745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18745] setpgid(0, 0)               = 0
[pid 18745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18745] write(3, "1000", 4)         = 4
[pid 18745] close(3)                    = 0
[pid 18745] memfd_create("syzkaller", 0) = 3
[pid 18745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18745] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18745] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18745] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18745] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18745] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18745] close(4)                    = 0
[pid 18745] close(3)                    = 0
[pid 18745] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18745] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18745] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18745] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18745] open("./bus", O_RDONLY)     = 3
[pid 18745] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18745] exit_group(0)               = ?
[pid 18745] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18745, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18746 attached
, child_tidptr=0x55555606b5d0) = 18746
[pid 18746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18746] setpgid(0, 0)               = 0
[pid 18746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18746] write(3, "1000", 4)         = 4
[pid 18746] close(3)                    = 0
[pid 18746] memfd_create("syzkaller", 0) = 3
[pid 18746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18746] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18746] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18746] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18746] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18746] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18746] close(4)                    = 0
[pid 18746] close(3)                    = 0
[pid 18746] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18746] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18746] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18746] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18746] open("./bus", O_RDONLY)     = 3
[pid 18746] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18746] exit_group(0)               = ?
[pid 18746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18746, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18747
./strace-static-x86_64: Process 18747 attached
[pid 18747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18747] setpgid(0, 0)               = 0
[pid 18747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18747] write(3, "1000", 4)         = 4
[pid 18747] close(3)                    = 0
[pid 18747] memfd_create("syzkaller", 0) = 3
[pid 18747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18747] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18747] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18747] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18747] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18747] close(4)                    = 0
[pid 18747] close(3)                    = 0
[pid 18747] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18747] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18747] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18747] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18747] open("./bus", O_RDONLY)     = 3
[pid 18747] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18747] exit_group(0)               = ?
[pid 18747] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18747, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18748 attached
 <unfinished ...>
[pid 18748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18748] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18748
[pid 18748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18748] write(3, "1000", 4)         = 4
[pid 18748] close(3)                    = 0
[pid 18748] memfd_create("syzkaller", 0) = 3
[pid 18748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18748] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18748] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18748] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18748] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18748] close(4)                    = 0
[pid 18748] close(3)                    = 0
[pid 18748] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18748] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18748] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18748] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18748] open("./bus", O_RDONLY)     = 3
[pid 18748] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18748] exit_group(0)               = ?
[pid 18748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18749
./strace-static-x86_64: Process 18749 attached
[pid 18749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18749] setpgid(0, 0)               = 0
[pid 18749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18749] write(3, "1000", 4)         = 4
[pid 18749] close(3)                    = 0
[pid 18749] memfd_create("syzkaller", 0) = 3
[pid 18749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18749] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18749] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18749] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18749] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18749] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18749] close(4)                    = 0
[pid 18749] close(3)                    = 0
[pid 18749] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18749] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18749] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18749] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18749] open("./bus", O_RDONLY)     = 3
[pid 18749] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18749] exit_group(0)               = ?
[pid 18749] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18749, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18750
./strace-static-x86_64: Process 18750 attached
[pid 18750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18750] setpgid(0, 0)               = 0
[pid 18750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18750] write(3, "1000", 4)         = 4
[pid 18750] close(3)                    = 0
[pid 18750] memfd_create("syzkaller", 0) = 3
[pid 18750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18750] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18750] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18750] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18750] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18750] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18750] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18750] close(4)                    = 0
[pid 18750] close(3)                    = 0
[pid 18750] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18750] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18750] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18750] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18750] open("./bus", O_RDONLY)     = 3
[pid 18750] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18750] exit_group(0)               = ?
[pid 18750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18751
./strace-static-x86_64: Process 18751 attached
[pid 18751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18751] setpgid(0, 0)               = 0
[pid 18751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18751] write(3, "1000", 4)         = 4
[pid 18751] close(3)                    = 0
[pid 18751] memfd_create("syzkaller", 0) = 3
[pid 18751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18751] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18751] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18751] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18751] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18751] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18751] close(4)                    = 0
[pid 18751] close(3)                    = 0
[pid 18751] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18751] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18751] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18751] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18751] open("./bus", O_RDONLY)     = 3
[pid 18751] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18751] exit_group(0)               = ?
[pid 18751] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18752
./strace-static-x86_64: Process 18752 attached
[pid 18752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18752] setpgid(0, 0)               = 0
[pid 18752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18752] write(3, "1000", 4)         = 4
[pid 18752] close(3)                    = 0
[pid 18752] memfd_create("syzkaller", 0) = 3
[pid 18752] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18752] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18752] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18752] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18752] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18752] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18752] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18752] close(4)                    = 0
[pid 18752] close(3)                    = 0
[pid 18752] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18752] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18752] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18752] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18752] open("./bus", O_RDONLY)     = 3
[pid 18752] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18752] exit_group(0)               = ?
[pid 18752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18752, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18753
./strace-static-x86_64: Process 18753 attached
[pid 18753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18753] setpgid(0, 0)               = 0
[pid 18753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18753] write(3, "1000", 4)         = 4
[pid 18753] close(3)                    = 0
[pid 18753] memfd_create("syzkaller", 0) = 3
[pid 18753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18753] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18753] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18753] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18753] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18753] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18753] close(4)                    = 0
[pid 18753] close(3)                    = 0
[pid 18753] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18753] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18753] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18753] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18753] open("./bus", O_RDONLY)     = 3
[pid 18753] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18753] exit_group(0)               = ?
[pid 18753] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18753, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18754 attached
, child_tidptr=0x55555606b5d0) = 18754
[pid 18754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18754] setpgid(0, 0)               = 0
[pid 18754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18754] write(3, "1000", 4)         = 4
[pid 18754] close(3)                    = 0
[pid 18754] memfd_create("syzkaller", 0) = 3
[pid 18754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18754] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18754] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18754] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18754] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18754] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18754] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18754] close(4)                    = 0
[pid 18754] close(3)                    = 0
[pid 18754] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18754] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18754] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18754] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18754] open("./bus", O_RDONLY)     = 3
[pid 18754] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18754] exit_group(0)               = ?
[pid 18754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18755
./strace-static-x86_64: Process 18755 attached
[pid 18755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18755] setpgid(0, 0)               = 0
[pid 18755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18755] write(3, "1000", 4)         = 4
[pid 18755] close(3)                    = 0
[pid 18755] memfd_create("syzkaller", 0) = 3
[pid 18755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18755] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18755] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18755] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18755] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18755] close(4)                    = 0
[pid 18755] close(3)                    = 0
[pid 18755] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18755] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18755] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18755] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18755] open("./bus", O_RDONLY)     = 3
[pid 18755] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18755] exit_group(0)               = ?
[pid 18755] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18755, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18756 attached
, child_tidptr=0x55555606b5d0) = 18756
[pid 18756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18756] setpgid(0, 0)               = 0
[pid 18756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18756] write(3, "1000", 4)         = 4
[pid 18756] close(3)                    = 0
[pid 18756] memfd_create("syzkaller", 0) = 3
[pid 18756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18756] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18756] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18756] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18756] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18756] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18756] close(4)                    = 0
[pid 18756] close(3)                    = 0
[pid 18756] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18756] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18756] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18756] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18756] open("./bus", O_RDONLY)     = 3
[pid 18756] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18756] exit_group(0)               = ?
[pid 18756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18757 attached
, child_tidptr=0x55555606b5d0) = 18757
[pid 18757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18757] setpgid(0, 0)               = 0
[pid 18757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18757] write(3, "1000", 4)         = 4
[pid 18757] close(3)                    = 0
[pid 18757] memfd_create("syzkaller", 0) = 3
[pid 18757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18757] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18757] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18757] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18757] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18757] close(4)                    = 0
[pid 18757] close(3)                    = 0
[pid 18757] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18757] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18757] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18757] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18757] open("./bus", O_RDONLY)     = 3
[pid 18757] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18757] exit_group(0)               = ?
[pid 18757] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18758 attached
, child_tidptr=0x55555606b5d0) = 18758
[pid 18758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18758] setpgid(0, 0)               = 0
[pid 18758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18758] write(3, "1000", 4)         = 4
[pid 18758] close(3)                    = 0
[pid 18758] memfd_create("syzkaller", 0) = 3
[pid 18758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18758] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18758] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18758] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18758] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18758] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18758] close(4)                    = 0
[pid 18758] close(3)                    = 0
[pid 18758] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18758] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18758] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18758] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18758] open("./bus", O_RDONLY)     = 3
[pid 18758] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18758] exit_group(0)               = ?
[pid 18758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18759
./strace-static-x86_64: Process 18759 attached
[pid 18759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18759] setpgid(0, 0)               = 0
[pid 18759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18759] write(3, "1000", 4)         = 4
[pid 18759] close(3)                    = 0
[pid 18759] memfd_create("syzkaller", 0) = 3
[pid 18759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18759] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18759] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18759] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18759] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18759] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18759] close(4)                    = 0
[pid 18759] close(3)                    = 0
[pid 18759] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18759] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18759] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18759] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18759] open("./bus", O_RDONLY)     = 3
[pid 18759] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18759] exit_group(0)               = ?
[pid 18759] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18759, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18760 attached
, child_tidptr=0x55555606b5d0) = 18760
[pid 18760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18760] setpgid(0, 0)               = 0
[pid 18760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18760] write(3, "1000", 4)         = 4
[pid 18760] close(3)                    = 0
[pid 18760] memfd_create("syzkaller", 0) = 3
[pid 18760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18760] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18760] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18760] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18760] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18760] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18760] close(4)                    = 0
[pid 18760] close(3)                    = 0
[pid 18760] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18760] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18760] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18760] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18760] open("./bus", O_RDONLY)     = 3
[pid 18760] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18760] exit_group(0)               = ?
[pid 18760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18760, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18761 attached
, child_tidptr=0x55555606b5d0) = 18761
[pid 18761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18761] setpgid(0, 0)               = 0
[pid 18761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18761] write(3, "1000", 4)         = 4
[pid 18761] close(3)                    = 0
[pid 18761] memfd_create("syzkaller", 0) = 3
[pid 18761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18761] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18761] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18761] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18761] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18761] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18761] close(4)                    = 0
[pid 18761] close(3)                    = 0
[pid 18761] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18761] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18761] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18761] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18761] open("./bus", O_RDONLY)     = 3
[pid 18761] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18761] exit_group(0)               = ?
[pid 18761] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18761, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18762 attached
, child_tidptr=0x55555606b5d0) = 18762
[pid 18762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18762] setpgid(0, 0)               = 0
[pid 18762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18762] write(3, "1000", 4)         = 4
[pid 18762] close(3)                    = 0
[pid 18762] memfd_create("syzkaller", 0) = 3
[pid 18762] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18762] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18762] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18762] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18762] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18762] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18762] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18762] close(4)                    = 0
[pid 18762] close(3)                    = 0
[pid 18762] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18762] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18762] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18762] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18762] open("./bus", O_RDONLY)     = 3
[pid 18762] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18762] exit_group(0)               = ?
[pid 18762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18763 attached
, child_tidptr=0x55555606b5d0) = 18763
[pid 18763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18763] setpgid(0, 0)               = 0
[pid 18763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18763] write(3, "1000", 4)         = 4
[pid 18763] close(3)                    = 0
[pid 18763] memfd_create("syzkaller", 0) = 3
[pid 18763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18763] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18763] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18763] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18763] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18763] close(4)                    = 0
[pid 18763] close(3)                    = 0
[pid 18763] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18763] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18763] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18763] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18763] open("./bus", O_RDONLY)     = 3
[pid 18763] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18763] exit_group(0)               = ?
[pid 18763] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18763, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18764
./strace-static-x86_64: Process 18764 attached
[pid 18764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18764] setpgid(0, 0)               = 0
[pid 18764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18764] write(3, "1000", 4)         = 4
[pid 18764] close(3)                    = 0
[pid 18764] memfd_create("syzkaller", 0) = 3
[pid 18764] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18764] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18764] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18764] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18764] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18764] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18764] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18764] close(4)                    = 0
[pid 18764] close(3)                    = 0
[pid 18764] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18764] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18764] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18764] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18764] open("./bus", O_RDONLY)     = 3
[pid 18764] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18764] exit_group(0)               = ?
[pid 18764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18765
./strace-static-x86_64: Process 18765 attached
[pid 18765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18765] setpgid(0, 0)               = 0
[pid 18765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18765] write(3, "1000", 4)         = 4
[pid 18765] close(3)                    = 0
[pid 18765] memfd_create("syzkaller", 0) = 3
[pid 18765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18765] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18765] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18765] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18765] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18765] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18765] close(4)                    = 0
[pid 18765] close(3)                    = 0
[pid 18765] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18765] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18765] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18765] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18765] open("./bus", O_RDONLY)     = 3
[pid 18765] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18765] exit_group(0)               = ?
[pid 18765] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18766 attached
 <unfinished ...>
[pid 18766] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18766
[pid 18766] <... prctl resumed>)        = 0
[pid 18766] setpgid(0, 0)               = 0
[pid 18766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18766] write(3, "1000", 4)         = 4
[pid 18766] close(3)                    = 0
[pid 18766] memfd_create("syzkaller", 0) = 3
[pid 18766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18766] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18766] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18766] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18766] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18766] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18766] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18766] close(4)                    = 0
[pid 18766] close(3)                    = 0
[pid 18766] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18766] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18766] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18766] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18766] open("./bus", O_RDONLY)     = 3
[pid 18766] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18766] exit_group(0)               = ?
[pid 18766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18767
./strace-static-x86_64: Process 18767 attached
[pid 18767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18767] setpgid(0, 0)               = 0
[pid 18767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18767] write(3, "1000", 4)         = 4
[pid 18767] close(3)                    = 0
[pid 18767] memfd_create("syzkaller", 0) = 3
[pid 18767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18767] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18767] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18767] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18767] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18767] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18767] close(4)                    = 0
[pid 18767] close(3)                    = 0
[pid 18767] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18767] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18767] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18767] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18767] open("./bus", O_RDONLY)     = 3
[pid 18767] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18767] exit_group(0)               = ?
[pid 18767] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18767, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18768 attached
, child_tidptr=0x55555606b5d0) = 18768
[pid 18768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18768] setpgid(0, 0)               = 0
[pid 18768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18768] write(3, "1000", 4)         = 4
[pid 18768] close(3)                    = 0
[pid 18768] memfd_create("syzkaller", 0) = 3
[pid 18768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18768] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18768] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18768] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18768] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18768] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18768] close(4)                    = 0
[pid 18768] close(3)                    = 0
[pid 18768] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18768] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18768] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18768] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18768] open("./bus", O_RDONLY)     = 3
[pid 18768] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18768] exit_group(0)               = ?
[pid 18768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18768, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18769
./strace-static-x86_64: Process 18769 attached
[pid 18769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18769] setpgid(0, 0)               = 0
[pid 18769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18769] write(3, "1000", 4)         = 4
[pid 18769] close(3)                    = 0
[pid 18769] memfd_create("syzkaller", 0) = 3
[pid 18769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18769] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18769] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18769] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18769] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18769] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18769] close(4)                    = 0
[pid 18769] close(3)                    = 0
[pid 18769] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18769] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18769] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18769] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18769] open("./bus", O_RDONLY)     = 3
[pid 18769] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18769] exit_group(0)               = ?
[pid 18769] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18769, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18770
./strace-static-x86_64: Process 18770 attached
[pid 18770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18770] setpgid(0, 0)               = 0
[pid 18770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18770] write(3, "1000", 4)         = 4
[pid 18770] close(3)                    = 0
[pid 18770] memfd_create("syzkaller", 0) = 3
[pid 18770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18770] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18770] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18770] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18770] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18770] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18770] close(4)                    = 0
[pid 18770] close(3)                    = 0
[pid 18770] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18770] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18770] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18770] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18770] open("./bus", O_RDONLY)     = 3
[pid 18770] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18770] exit_group(0)               = ?
[pid 18770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18771 attached
 <unfinished ...>
[pid 18771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18771] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18771
[pid 18771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18771] write(3, "1000", 4)         = 4
[pid 18771] close(3)                    = 0
[pid 18771] memfd_create("syzkaller", 0) = 3
[pid 18771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18771] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18771] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18771] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18771] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18771] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18771] close(4)                    = 0
[pid 18771] close(3)                    = 0
[pid 18771] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18771] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18771] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18771] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18771] open("./bus", O_RDONLY)     = 3
[pid 18771] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18771] exit_group(0)               = ?
[pid 18771] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18771, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18772 attached
, child_tidptr=0x55555606b5d0) = 18772
[pid 18772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18772] setpgid(0, 0)               = 0
[pid 18772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18772] write(3, "1000", 4)         = 4
[pid 18772] close(3)                    = 0
[pid 18772] memfd_create("syzkaller", 0) = 3
[pid 18772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18772] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18772] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18772] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18772] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18772] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18772] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18772] close(4)                    = 0
[pid 18772] close(3)                    = 0
[pid 18772] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18772] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18772] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18772] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18772] open("./bus", O_RDONLY)     = 3
[pid 18772] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18772] exit_group(0)               = ?
[pid 18772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18773 attached
, child_tidptr=0x55555606b5d0) = 18773
[pid 18773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18773] setpgid(0, 0)               = 0
[pid 18773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18773] write(3, "1000", 4)         = 4
[pid 18773] close(3)                    = 0
[pid 18773] memfd_create("syzkaller", 0) = 3
[pid 18773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18773] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18773] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18773] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18773] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18773] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18773] close(4)                    = 0
[pid 18773] close(3)                    = 0
[pid 18773] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18773] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18773] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18773] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18773] open("./bus", O_RDONLY)     = 3
[pid 18773] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18773] exit_group(0)               = ?
[pid 18773] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18773, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18774 attached
, child_tidptr=0x55555606b5d0) = 18774
[pid 18774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18774] setpgid(0, 0)               = 0
[pid 18774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18774] write(3, "1000", 4)         = 4
[pid 18774] close(3)                    = 0
[pid 18774] memfd_create("syzkaller", 0) = 3
[pid 18774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18774] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18774] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18774] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18774] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18774] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18774] close(4)                    = 0
[pid 18774] close(3)                    = 0
[pid 18774] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18774] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18774] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18774] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18774] open("./bus", O_RDONLY)     = 3
[pid 18774] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18774] exit_group(0)               = ?
[pid 18774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18775
./strace-static-x86_64: Process 18775 attached
[pid 18775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18775] setpgid(0, 0)               = 0
[pid 18775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18775] write(3, "1000", 4)         = 4
[pid 18775] close(3)                    = 0
[pid 18775] memfd_create("syzkaller", 0) = 3
[pid 18775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18775] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18775] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18775] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18775] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18775] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18775] close(4)                    = 0
[pid 18775] close(3)                    = 0
[pid 18775] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18775] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18775] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18775] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18775] open("./bus", O_RDONLY)     = 3
[pid 18775] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18775] exit_group(0)               = ?
[pid 18775] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18775, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18776 attached
, child_tidptr=0x55555606b5d0) = 18776
[pid 18776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18776] setpgid(0, 0)               = 0
[pid 18776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18776] write(3, "1000", 4)         = 4
[pid 18776] close(3)                    = 0
[pid 18776] memfd_create("syzkaller", 0) = 3
[pid 18776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18776] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18776] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18776] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18776] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18776] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18776] close(4)                    = 0
[pid 18776] close(3)                    = 0
[pid 18776] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18776] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18776] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18776] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18776] open("./bus", O_RDONLY)     = 3
[pid 18776] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18776] exit_group(0)               = ?
[pid 18776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18777
./strace-static-x86_64: Process 18777 attached
[pid 18777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18777] setpgid(0, 0)               = 0
[pid 18777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18777] write(3, "1000", 4)         = 4
[pid 18777] close(3)                    = 0
[pid 18777] memfd_create("syzkaller", 0) = 3
[pid 18777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18777] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18777] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18777] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18777] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18777] close(4)                    = 0
[pid 18777] close(3)                    = 0
[pid 18777] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18777] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18777] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18777] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18777] open("./bus", O_RDONLY)     = 3
[pid 18777] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18777] exit_group(0)               = ?
[pid 18777] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18777, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18778
./strace-static-x86_64: Process 18778 attached
[pid 18778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18778] setpgid(0, 0)               = 0
[pid 18778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18778] write(3, "1000", 4)         = 4
[pid 18778] close(3)                    = 0
[pid 18778] memfd_create("syzkaller", 0) = 3
[pid 18778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18778] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18778] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18778] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18778] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18778] close(4)                    = 0
[pid 18778] close(3)                    = 0
[pid 18778] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18778] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18778] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18778] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18778] open("./bus", O_RDONLY)     = 3
[pid 18778] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18778] exit_group(0)               = ?
[pid 18778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18778, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18779
./strace-static-x86_64: Process 18779 attached
[pid 18779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18779] setpgid(0, 0)               = 0
[pid 18779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18779] write(3, "1000", 4)         = 4
[pid 18779] close(3)                    = 0
[pid 18779] memfd_create("syzkaller", 0) = 3
[pid 18779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18779] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18779] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18779] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18779] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18779] close(4)                    = 0
[pid 18779] close(3)                    = 0
[pid 18779] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18779] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18779] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18779] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18779] open("./bus", O_RDONLY)     = 3
[pid 18779] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18779] exit_group(0)               = ?
[pid 18779] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18779, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18780 attached
, child_tidptr=0x55555606b5d0) = 18780
[pid 18780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18780] setpgid(0, 0)               = 0
[pid 18780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18780] write(3, "1000", 4)         = 4
[pid 18780] close(3)                    = 0
[pid 18780] memfd_create("syzkaller", 0) = 3
[pid 18780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18780] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18780] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18780] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18780] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18780] close(4)                    = 0
[pid 18780] close(3)                    = 0
[pid 18780] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18780] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18780] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18780] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18780] open("./bus", O_RDONLY)     = 3
[pid 18780] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18780] exit_group(0)               = ?
[pid 18780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18781
./strace-static-x86_64: Process 18781 attached
[pid 18781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18781] setpgid(0, 0)               = 0
[pid 18781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18781] write(3, "1000", 4)         = 4
[pid 18781] close(3)                    = 0
[pid 18781] memfd_create("syzkaller", 0) = 3
[pid 18781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18781] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18781] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18781] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18781] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18781] close(4)                    = 0
[pid 18781] close(3)                    = 0
[pid 18781] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18781] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18781] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18781] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18781] open("./bus", O_RDONLY)     = 3
[pid 18781] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18781] exit_group(0)               = ?
[pid 18781] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18781, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18782 attached
, child_tidptr=0x55555606b5d0) = 18782
[pid 18782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18782] setpgid(0, 0)               = 0
[pid 18782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18782] write(3, "1000", 4)         = 4
[pid 18782] close(3)                    = 0
[pid 18782] memfd_create("syzkaller", 0) = 3
[pid 18782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18782] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18782] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18782] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18782] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18782] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18782] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18782] close(4)                    = 0
[pid 18782] close(3)                    = 0
[pid 18782] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18782] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18782] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18782] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18782] open("./bus", O_RDONLY)     = 3
[pid 18782] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18782] exit_group(0)               = ?
[pid 18782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18782, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18783
./strace-static-x86_64: Process 18783 attached
[pid 18783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18783] setpgid(0, 0)               = 0
[pid 18783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18783] write(3, "1000", 4)         = 4
[pid 18783] close(3)                    = 0
[pid 18783] memfd_create("syzkaller", 0) = 3
[pid 18783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18783] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18783] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18783] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18783] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18783] close(4)                    = 0
[pid 18783] close(3)                    = 0
[pid 18783] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18783] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18783] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18783] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18783] open("./bus", O_RDONLY)     = 3
[pid 18783] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18783] exit_group(0)               = ?
[pid 18783] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18783, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18784
./strace-static-x86_64: Process 18784 attached
[pid 18784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18784] setpgid(0, 0)               = 0
[pid 18784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18784] write(3, "1000", 4)         = 4
[pid 18784] close(3)                    = 0
[pid 18784] memfd_create("syzkaller", 0) = 3
[pid 18784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18784] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18784] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18784] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18784] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18784] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18784] close(4)                    = 0
[pid 18784] close(3)                    = 0
[pid 18784] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18784] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18784] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18784] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18784] open("./bus", O_RDONLY)     = 3
[pid 18784] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18784] exit_group(0)               = ?
[pid 18784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18785
./strace-static-x86_64: Process 18785 attached
[pid 18785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18785] setpgid(0, 0)               = 0
[pid 18785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18785] write(3, "1000", 4)         = 4
[pid 18785] close(3)                    = 0
[pid 18785] memfd_create("syzkaller", 0) = 3
[pid 18785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18785] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18785] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18785] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18785] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18785] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18785] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18785] close(4)                    = 0
[pid 18785] close(3)                    = 0
[pid 18785] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18785] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18785] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18785] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18785] open("./bus", O_RDONLY)     = 3
[pid 18785] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18785] exit_group(0)               = ?
[pid 18785] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18785, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18786 attached
, child_tidptr=0x55555606b5d0) = 18786
[pid 18786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18786] setpgid(0, 0)               = 0
[pid 18786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18786] write(3, "1000", 4)         = 4
[pid 18786] close(3)                    = 0
[pid 18786] memfd_create("syzkaller", 0) = 3
[pid 18786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18786] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18786] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18786] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18786] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18786] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18786] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18786] close(4)                    = 0
[pid 18786] close(3)                    = 0
[pid 18786] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18786] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18786] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18786] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18786] open("./bus", O_RDONLY)     = 3
[pid 18786] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18786] exit_group(0)               = ?
[pid 18786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18786, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18787
./strace-static-x86_64: Process 18787 attached
[pid 18787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18787] setpgid(0, 0)               = 0
[pid 18787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18787] write(3, "1000", 4)         = 4
[pid 18787] close(3)                    = 0
[pid 18787] memfd_create("syzkaller", 0) = 3
[pid 18787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18787] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18787] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18787] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18787] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18787] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18787] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18787] close(4)                    = 0
[pid 18787] close(3)                    = 0
[pid 18787] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18787] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18787] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18787] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18787] open("./bus", O_RDONLY)     = 3
[pid 18787] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18787] exit_group(0)               = ?
[pid 18787] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18787, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18788
./strace-static-x86_64: Process 18788 attached
[pid 18788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18788] setpgid(0, 0)               = 0
[pid 18788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18788] write(3, "1000", 4)         = 4
[pid 18788] close(3)                    = 0
[pid 18788] memfd_create("syzkaller", 0) = 3
[pid 18788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18788] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18788] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18788] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18788] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18788] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18788] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18788] close(4)                    = 0
[pid 18788] close(3)                    = 0
[pid 18788] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18788] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18788] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18788] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18788] open("./bus", O_RDONLY)     = 3
[pid 18788] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18788] exit_group(0)               = ?
[pid 18788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18789
./strace-static-x86_64: Process 18789 attached
[pid 18789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18789] setpgid(0, 0)               = 0
[pid 18789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18789] write(3, "1000", 4)         = 4
[pid 18789] close(3)                    = 0
[pid 18789] memfd_create("syzkaller", 0) = 3
[pid 18789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18789] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18789] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18789] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18789] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18789] close(4)                    = 0
[pid 18789] close(3)                    = 0
[pid 18789] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18789] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18789] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18789] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18789] open("./bus", O_RDONLY)     = 3
[pid 18789] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18789] exit_group(0)               = ?
[pid 18789] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18789, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18790
./strace-static-x86_64: Process 18790 attached
[pid 18790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18790] setpgid(0, 0)               = 0
[pid 18790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18790] write(3, "1000", 4)         = 4
[pid 18790] close(3)                    = 0
[pid 18790] memfd_create("syzkaller", 0) = 3
[pid 18790] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18790] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18790] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18790] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18790] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18790] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18790] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18790] close(4)                    = 0
[pid 18790] close(3)                    = 0
[pid 18790] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18790] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18790] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18790] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18790] open("./bus", O_RDONLY)     = 3
[pid 18790] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18790] exit_group(0)               = ?
[pid 18790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18791
./strace-static-x86_64: Process 18791 attached
[pid 18791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18791] setpgid(0, 0)               = 0
[pid 18791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18791] write(3, "1000", 4)         = 4
[pid 18791] close(3)                    = 0
[pid 18791] memfd_create("syzkaller", 0) = 3
[pid 18791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18791] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18791] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18791] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18791] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18791] close(4)                    = 0
[pid 18791] close(3)                    = 0
[pid 18791] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18791] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18791] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18791] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18791] open("./bus", O_RDONLY)     = 3
[pid 18791] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18791] exit_group(0)               = ?
[pid 18791] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18791, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18792 attached
 <unfinished ...>
[pid 18792] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18792
[pid 18792] <... prctl resumed>)        = 0
[pid 18792] setpgid(0, 0)               = 0
[pid 18792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18792] write(3, "1000", 4)         = 4
[pid 18792] close(3)                    = 0
[pid 18792] memfd_create("syzkaller", 0) = 3
[pid 18792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18792] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18792] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18792] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18792] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18792] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18792] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18792] close(4)                    = 0
[pid 18792] close(3)                    = 0
[pid 18792] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18792] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18792] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18792] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18792] open("./bus", O_RDONLY)     = 3
[pid 18792] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18792] exit_group(0)               = ?
[pid 18792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18793 attached
, child_tidptr=0x55555606b5d0) = 18793
[pid 18793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18793] setpgid(0, 0)               = 0
[pid 18793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18793] write(3, "1000", 4)         = 4
[pid 18793] close(3)                    = 0
[pid 18793] memfd_create("syzkaller", 0) = 3
[pid 18793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18793] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18793] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18793] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18793] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18793] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18793] close(4)                    = 0
[pid 18793] close(3)                    = 0
[pid 18793] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18793] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18793] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18793] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18793] open("./bus", O_RDONLY)     = 3
[pid 18793] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18793] exit_group(0)               = ?
[pid 18793] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18793, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18794
./strace-static-x86_64: Process 18794 attached
[pid 18794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18794] setpgid(0, 0)               = 0
[pid 18794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18794] write(3, "1000", 4)         = 4
[pid 18794] close(3)                    = 0
[pid 18794] memfd_create("syzkaller", 0) = 3
[pid 18794] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18794] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18794] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18794] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18794] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18794] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18794] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18794] close(4)                    = 0
[pid 18794] close(3)                    = 0
[pid 18794] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18794] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18794] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18794] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18794] open("./bus", O_RDONLY)     = 3
[pid 18794] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18794] exit_group(0)               = ?
[pid 18794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18794, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18795
./strace-static-x86_64: Process 18795 attached
[pid 18795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18795] setpgid(0, 0)               = 0
[pid 18795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18795] write(3, "1000", 4)         = 4
[pid 18795] close(3)                    = 0
[pid 18795] memfd_create("syzkaller", 0) = 3
[pid 18795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18795] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18795] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18795] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18795] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18795] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18795] close(4)                    = 0
[pid 18795] close(3)                    = 0
[pid 18795] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18795] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18795] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18795] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18795] open("./bus", O_RDONLY)     = 3
[pid 18795] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18795] exit_group(0)               = ?
[pid 18795] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18795, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18796
./strace-static-x86_64: Process 18796 attached
[pid 18796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18796] setpgid(0, 0)               = 0
[pid 18796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18796] write(3, "1000", 4)         = 4
[pid 18796] close(3)                    = 0
[pid 18796] memfd_create("syzkaller", 0) = 3
[pid 18796] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18796] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18796] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18796] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18796] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18796] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18796] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18796] close(4)                    = 0
[pid 18796] close(3)                    = 0
[pid 18796] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18796] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18796] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18796] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18796] open("./bus", O_RDONLY)     = 3
[pid 18796] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18796] exit_group(0)               = ?
[pid 18796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18796, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18797 attached
 <unfinished ...>
[pid 18797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18797] setpgid(0, 0)               = 0
[pid 18797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18797
[pid 18797] <... openat resumed>)       = 3
[pid 18797] write(3, "1000", 4)         = 4
[pid 18797] close(3)                    = 0
[pid 18797] memfd_create("syzkaller", 0) = 3
[pid 18797] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18797] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18797] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18797] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18797] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18797] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18797] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18797] close(4)                    = 0
[pid 18797] close(3)                    = 0
[pid 18797] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18797] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18797] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18797] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18797] open("./bus", O_RDONLY)     = 3
[pid 18797] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18797] exit_group(0)               = ?
[pid 18797] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18797, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18798 attached
, child_tidptr=0x55555606b5d0) = 18798
[pid 18798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18798] setpgid(0, 0)               = 0
[pid 18798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18798] write(3, "1000", 4)         = 4
[pid 18798] close(3)                    = 0
[pid 18798] memfd_create("syzkaller", 0) = 3
[pid 18798] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18798] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18798] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18798] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18798] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18798] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18798] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18798] close(4)                    = 0
[pid 18798] close(3)                    = 0
[pid 18798] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18798] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18798] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18798] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18798] open("./bus", O_RDONLY)     = 3
[pid 18798] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18798] exit_group(0)               = ?
[pid 18798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18799
./strace-static-x86_64: Process 18799 attached
[pid 18799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18799] setpgid(0, 0)               = 0
[pid 18799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18799] write(3, "1000", 4)         = 4
[pid 18799] close(3)                    = 0
[pid 18799] memfd_create("syzkaller", 0) = 3
[pid 18799] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18799] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18799] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18799] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18799] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18799] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18799] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18799] close(4)                    = 0
[pid 18799] close(3)                    = 0
[pid 18799] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18799] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18799] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18799] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18799] open("./bus", O_RDONLY)     = 3
[pid 18799] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18799] exit_group(0)               = ?
[pid 18799] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18799, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18800 attached
, child_tidptr=0x55555606b5d0) = 18800
[pid 18800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18800] setpgid(0, 0)               = 0
[pid 18800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18800] write(3, "1000", 4)         = 4
[pid 18800] close(3)                    = 0
[pid 18800] memfd_create("syzkaller", 0) = 3
[pid 18800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18800] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18800] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18800] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18800] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18800] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18800] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18800] close(4)                    = 0
[pid 18800] close(3)                    = 0
[pid 18800] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18800] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18800] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18800] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18800] open("./bus", O_RDONLY)     = 3
[pid 18800] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18800] exit_group(0)               = ?
[pid 18800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18801
./strace-static-x86_64: Process 18801 attached
[pid 18801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18801] setpgid(0, 0)               = 0
[pid 18801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18801] write(3, "1000", 4)         = 4
[pid 18801] close(3)                    = 0
[pid 18801] memfd_create("syzkaller", 0) = 3
[pid 18801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18801] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18801] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18801] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18801] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18801] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18801] close(4)                    = 0
[pid 18801] close(3)                    = 0
[pid 18801] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18801] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18801] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18801] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18801] open("./bus", O_RDONLY)     = 3
[pid 18801] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18801] exit_group(0)               = ?
[pid 18801] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18801, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18802 attached
, child_tidptr=0x55555606b5d0) = 18802
[pid 18802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18802] setpgid(0, 0)               = 0
[pid 18802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18802] write(3, "1000", 4)         = 4
[pid 18802] close(3)                    = 0
[pid 18802] memfd_create("syzkaller", 0) = 3
[pid 18802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18802] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18802] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18802] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18802] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18802] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18802] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18802] close(4)                    = 0
[pid 18802] close(3)                    = 0
[pid 18802] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18802] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18802] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18802] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18802] open("./bus", O_RDONLY)     = 3
[pid 18802] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18802] exit_group(0)               = ?
[pid 18802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18803 attached
, child_tidptr=0x55555606b5d0) = 18803
[pid 18803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18803] setpgid(0, 0)               = 0
[pid 18803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18803] write(3, "1000", 4)         = 4
[pid 18803] close(3)                    = 0
[pid 18803] memfd_create("syzkaller", 0) = 3
[pid 18803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18803] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18803] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18803] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18803] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18803] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18803] close(4)                    = 0
[pid 18803] close(3)                    = 0
[pid 18803] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18803] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18803] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18803] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18803] open("./bus", O_RDONLY)     = 3
[pid 18803] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18803] exit_group(0)               = ?
[pid 18803] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18803, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18804 attached
, child_tidptr=0x55555606b5d0) = 18804
[pid 18804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18804] setpgid(0, 0)               = 0
[pid 18804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18804] write(3, "1000", 4)         = 4
[pid 18804] close(3)                    = 0
[pid 18804] memfd_create("syzkaller", 0) = 3
[pid 18804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18804] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18804] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18804] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18804] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18804] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18804] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18804] close(4)                    = 0
[pid 18804] close(3)                    = 0
[pid 18804] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18804] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18804] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18804] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18804] open("./bus", O_RDONLY)     = 3
[pid 18804] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18804] exit_group(0)               = ?
[pid 18804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18805
./strace-static-x86_64: Process 18805 attached
[pid 18805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18805] setpgid(0, 0)               = 0
[pid 18805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18805] write(3, "1000", 4)         = 4
[pid 18805] close(3)                    = 0
[pid 18805] memfd_create("syzkaller", 0) = 3
[pid 18805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18805] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18805] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18805] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18805] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18805] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18805] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18805] close(4)                    = 0
[pid 18805] close(3)                    = 0
[pid 18805] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18805] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18805] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18805] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18805] open("./bus", O_RDONLY)     = 3
[pid 18805] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18805] exit_group(0)               = ?
[pid 18805] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18805, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18806
./strace-static-x86_64: Process 18806 attached
[pid 18806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18806] setpgid(0, 0)               = 0
[pid 18806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18806] write(3, "1000", 4)         = 4
[pid 18806] close(3)                    = 0
[pid 18806] memfd_create("syzkaller", 0) = 3
[pid 18806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18806] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18806] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18806] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18806] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18806] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18806] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18806] close(4)                    = 0
[pid 18806] close(3)                    = 0
[pid 18806] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18806] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18806] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18806] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18806] open("./bus", O_RDONLY)     = 3
[pid 18806] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18806] exit_group(0)               = ?
[pid 18806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18806, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18807
./strace-static-x86_64: Process 18807 attached
[pid 18807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18807] setpgid(0, 0)               = 0
[pid 18807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18807] write(3, "1000", 4)         = 4
[pid 18807] close(3)                    = 0
[pid 18807] memfd_create("syzkaller", 0) = 3
[pid 18807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18807] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18807] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18807] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18807] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18807] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18807] close(4)                    = 0
[pid 18807] close(3)                    = 0
[pid 18807] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18807] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18807] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18807] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18807] open("./bus", O_RDONLY)     = 3
[pid 18807] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18807] exit_group(0)               = ?
[pid 18807] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18807, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18808 attached
, child_tidptr=0x55555606b5d0) = 18808
[pid 18808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18808] setpgid(0, 0)               = 0
[pid 18808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18808] write(3, "1000", 4)         = 4
[pid 18808] close(3)                    = 0
[pid 18808] memfd_create("syzkaller", 0) = 3
[pid 18808] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18808] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18808] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18808] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18808] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18808] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18808] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18808] close(4)                    = 0
[pid 18808] close(3)                    = 0
[pid 18808] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18808] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18808] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18808] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18808] open("./bus", O_RDONLY)     = 3
[pid 18808] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18808] exit_group(0)               = ?
[pid 18808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18808, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18809 attached
, child_tidptr=0x55555606b5d0) = 18809
[pid 18809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18809] setpgid(0, 0)               = 0
[pid 18809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18809] write(3, "1000", 4)         = 4
[pid 18809] close(3)                    = 0
[pid 18809] memfd_create("syzkaller", 0) = 3
[pid 18809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18809] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18809] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18809] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18809] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18809] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18809] close(4)                    = 0
[pid 18809] close(3)                    = 0
[pid 18809] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18809] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18809] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18809] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18809] open("./bus", O_RDONLY)     = 3
[pid 18809] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18809] exit_group(0)               = ?
[pid 18809] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18809, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18810
./strace-static-x86_64: Process 18810 attached
[pid 18810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18810] setpgid(0, 0)               = 0
[pid 18810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18810] write(3, "1000", 4)         = 4
[pid 18810] close(3)                    = 0
[pid 18810] memfd_create("syzkaller", 0) = 3
[pid 18810] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18810] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18810] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18810] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18810] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18810] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18810] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18810] close(4)                    = 0
[pid 18810] close(3)                    = 0
[pid 18810] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18810] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18810] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18810] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18810] open("./bus", O_RDONLY)     = 3
[pid 18810] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18810] exit_group(0)               = ?
[pid 18810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18810, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18811
./strace-static-x86_64: Process 18811 attached
[pid 18811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18811] setpgid(0, 0)               = 0
[pid 18811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18811] write(3, "1000", 4)         = 4
[pid 18811] close(3)                    = 0
[pid 18811] memfd_create("syzkaller", 0) = 3
[pid 18811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18811] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18811] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18811] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18811] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18811] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18811] close(4)                    = 0
[pid 18811] close(3)                    = 0
[pid 18811] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18811] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18811] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18811] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18811] open("./bus", O_RDONLY)     = 3
[pid 18811] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18811] exit_group(0)               = ?
[pid 18811] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18811, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18812 attached
, child_tidptr=0x55555606b5d0) = 18812
[pid 18812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18812] setpgid(0, 0)               = 0
[pid 18812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18812] write(3, "1000", 4)         = 4
[pid 18812] close(3)                    = 0
[pid 18812] memfd_create("syzkaller", 0) = 3
[pid 18812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18812] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18812] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18812] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18812] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18812] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18812] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18812] close(4)                    = 0
[pid 18812] close(3)                    = 0
[pid 18812] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18812] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18812] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18812] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18812] open("./bus", O_RDONLY)     = 3
[pid 18812] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18812] exit_group(0)               = ?
[pid 18812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18813 attached
, child_tidptr=0x55555606b5d0) = 18813
[pid 18813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18813] setpgid(0, 0)               = 0
[pid 18813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18813] write(3, "1000", 4)         = 4
[pid 18813] close(3)                    = 0
[pid 18813] memfd_create("syzkaller", 0) = 3
[pid 18813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18813] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18813] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18813] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18813] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18813] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18813] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18813] close(4)                    = 0
[pid 18813] close(3)                    = 0
[pid 18813] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18813] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18813] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18813] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18813] open("./bus", O_RDONLY)     = 3
[pid 18813] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18813] exit_group(0)               = ?
[pid 18813] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18813, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18814 attached
, child_tidptr=0x55555606b5d0) = 18814
[pid 18814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18814] setpgid(0, 0)               = 0
[pid 18814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18814] write(3, "1000", 4)         = 4
[pid 18814] close(3)                    = 0
[pid 18814] memfd_create("syzkaller", 0) = 3
[pid 18814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18814] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18814] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18814] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18814] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18814] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18814] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18814] close(4)                    = 0
[pid 18814] close(3)                    = 0
[pid 18814] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18814] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18814] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18814] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18814] open("./bus", O_RDONLY)     = 3
[pid 18814] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18814] exit_group(0)               = ?
[pid 18814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18815
./strace-static-x86_64: Process 18815 attached
[pid 18815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18815] setpgid(0, 0)               = 0
[pid 18815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18815] write(3, "1000", 4)         = 4
[pid 18815] close(3)                    = 0
[pid 18815] memfd_create("syzkaller", 0) = 3
[pid 18815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18815] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18815] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18815] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18815] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18815] close(4)                    = 0
[pid 18815] close(3)                    = 0
[pid 18815] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18815] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18815] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18815] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18815] open("./bus", O_RDONLY)     = 3
[pid 18815] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18815] exit_group(0)               = ?
[pid 18815] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18815, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18816 attached
 <unfinished ...>
[pid 18816] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18816
[pid 18816] <... prctl resumed>)        = 0
[pid 18816] setpgid(0, 0)               = 0
[pid 18816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18816] write(3, "1000", 4)         = 4
[pid 18816] close(3)                    = 0
[pid 18816] memfd_create("syzkaller", 0) = 3
[pid 18816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18816] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18816] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18816] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18816] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18816] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18816] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18816] close(4)                    = 0
[pid 18816] close(3)                    = 0
[pid 18816] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18816] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18816] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18816] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18816] open("./bus", O_RDONLY)     = 3
[pid 18816] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18816] exit_group(0)               = ?
[pid 18816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18817
./strace-static-x86_64: Process 18817 attached
[pid 18817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18817] setpgid(0, 0)               = 0
[pid 18817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18817] write(3, "1000", 4)         = 4
[pid 18817] close(3)                    = 0
[pid 18817] memfd_create("syzkaller", 0) = 3
[pid 18817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18817] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18817] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18817] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18817] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18817] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18817] close(4)                    = 0
[pid 18817] close(3)                    = 0
[pid 18817] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18817] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18817] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18817] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18817] open("./bus", O_RDONLY)     = 3
[pid 18817] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18817] exit_group(0)               = ?
[pid 18817] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18817, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18818
./strace-static-x86_64: Process 18818 attached
[pid 18818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18818] setpgid(0, 0)               = 0
[pid 18818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18818] write(3, "1000", 4)         = 4
[pid 18818] close(3)                    = 0
[pid 18818] memfd_create("syzkaller", 0) = 3
[pid 18818] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18818] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18818] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18818] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18818] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18818] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18818] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18818] close(4)                    = 0
[pid 18818] close(3)                    = 0
[pid 18818] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18818] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18818] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18818] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18818] open("./bus", O_RDONLY)     = 3
[pid 18818] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18818] exit_group(0)               = ?
[pid 18818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18819 attached
, child_tidptr=0x55555606b5d0) = 18819
[pid 18819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18819] setpgid(0, 0)               = 0
[pid 18819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18819] write(3, "1000", 4)         = 4
[pid 18819] close(3)                    = 0
[pid 18819] memfd_create("syzkaller", 0) = 3
[pid 18819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18819] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18819] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18819] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18819] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18819] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18819] close(4)                    = 0
[pid 18819] close(3)                    = 0
[pid 18819] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18819] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18819] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18819] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18819] open("./bus", O_RDONLY)     = 3
[pid 18819] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18819] exit_group(0)               = ?
[pid 18819] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18819, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18820 attached
, child_tidptr=0x55555606b5d0) = 18820
[pid 18820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18820] setpgid(0, 0)               = 0
[pid 18820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18820] write(3, "1000", 4)         = 4
[pid 18820] close(3)                    = 0
[pid 18820] memfd_create("syzkaller", 0) = 3
[pid 18820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18820] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18820] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18820] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18820] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18820] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18820] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18820] close(4)                    = 0
[pid 18820] close(3)                    = 0
[pid 18820] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18820] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18820] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18820] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18820] open("./bus", O_RDONLY)     = 3
[pid 18820] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18820] exit_group(0)               = ?
[pid 18820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18821 attached
, child_tidptr=0x55555606b5d0) = 18821
[pid 18821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18821] setpgid(0, 0)               = 0
[pid 18821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18821] write(3, "1000", 4)         = 4
[pid 18821] close(3)                    = 0
[pid 18821] memfd_create("syzkaller", 0) = 3
[pid 18821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18821] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18821] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18821] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18821] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18821] close(4)                    = 0
[pid 18821] close(3)                    = 0
[pid 18821] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18821] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18821] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18821] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18821] open("./bus", O_RDONLY)     = 3
[pid 18821] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18821] exit_group(0)               = ?
[pid 18821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18821, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18822 attached
, child_tidptr=0x55555606b5d0) = 18822
[pid 18822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18822] setpgid(0, 0)               = 0
[pid 18822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18822] write(3, "1000", 4)         = 4
[pid 18822] close(3)                    = 0
[pid 18822] memfd_create("syzkaller", 0) = 3
[pid 18822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18822] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18822] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18822] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18822] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18822] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18822] close(4)                    = 0
[pid 18822] close(3)                    = 0
[pid 18822] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18822] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18822] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18822] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18822] open("./bus", O_RDONLY)     = 3
[pid 18822] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18822] exit_group(0)               = ?
[pid 18822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18823 attached
, child_tidptr=0x55555606b5d0) = 18823
[pid 18823] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18823] setpgid(0, 0)               = 0
[pid 18823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18823] write(3, "1000", 4)         = 4
[pid 18823] close(3)                    = 0
[pid 18823] memfd_create("syzkaller", 0) = 3
[pid 18823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18823] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18823] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18823] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18823] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18823] close(4)                    = 0
[pid 18823] close(3)                    = 0
[pid 18823] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18823] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18823] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18823] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18823] open("./bus", O_RDONLY)     = 3
[pid 18823] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18823] exit_group(0)               = ?
[pid 18823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18823, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18824 attached
, child_tidptr=0x55555606b5d0) = 18824
[pid 18824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18824] setpgid(0, 0)               = 0
[pid 18824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18824] write(3, "1000", 4)         = 4
[pid 18824] close(3)                    = 0
[pid 18824] memfd_create("syzkaller", 0) = 3
[pid 18824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18824] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18824] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18824] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18824] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18824] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18824] close(4)                    = 0
[pid 18824] close(3)                    = 0
[pid 18824] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18824] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18824] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18824] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18824] open("./bus", O_RDONLY)     = 3
[pid 18824] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18824] exit_group(0)               = ?
[pid 18824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18825 attached
 <unfinished ...>
[pid 18825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18825] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18825
[pid 18825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18825] write(3, "1000", 4)         = 4
[pid 18825] close(3)                    = 0
[pid 18825] memfd_create("syzkaller", 0) = 3
[pid 18825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18825] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18825] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18825] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18825] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18825] close(4)                    = 0
[pid 18825] close(3)                    = 0
[pid 18825] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18825] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18825] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18825] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18825] open("./bus", O_RDONLY)     = 3
[pid 18825] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18825] exit_group(0)               = ?
[pid 18825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18826 attached
, child_tidptr=0x55555606b5d0) = 18826
[pid 18826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18826] setpgid(0, 0)               = 0
[pid 18826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18826] write(3, "1000", 4)         = 4
[pid 18826] close(3)                    = 0
[pid 18826] memfd_create("syzkaller", 0) = 3
[pid 18826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18826] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18826] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18826] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18826] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18826] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18826] close(4)                    = 0
[pid 18826] close(3)                    = 0
[pid 18826] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18826] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18826] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18826] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18826] open("./bus", O_RDONLY)     = 3
[pid 18826] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18826] exit_group(0)               = ?
[pid 18826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18826, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18827
./strace-static-x86_64: Process 18827 attached
[pid 18827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18827] setpgid(0, 0)               = 0
[pid 18827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18827] write(3, "1000", 4)         = 4
[pid 18827] close(3)                    = 0
[pid 18827] memfd_create("syzkaller", 0) = 3
[pid 18827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18827] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18827] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18827] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18827] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18827] close(4)                    = 0
[pid 18827] close(3)                    = 0
[pid 18827] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18827] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18827] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18827] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18827] open("./bus", O_RDONLY)     = 3
[pid 18827] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18827] exit_group(0)               = ?
[pid 18827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18827, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18828
./strace-static-x86_64: Process 18828 attached
[pid 18828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18828] setpgid(0, 0)               = 0
[pid 18828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18828] write(3, "1000", 4)         = 4
[pid 18828] close(3)                    = 0
[pid 18828] memfd_create("syzkaller", 0) = 3
[pid 18828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18828] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18828] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18828] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18828] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18828] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18828] close(4)                    = 0
[pid 18828] close(3)                    = 0
[pid 18828] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18828] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18828] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18828] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18828] open("./bus", O_RDONLY)     = 3
[pid 18828] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18828] exit_group(0)               = ?
[pid 18828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18829
./strace-static-x86_64: Process 18829 attached
[pid 18829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18829] setpgid(0, 0)               = 0
[pid 18829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18829] write(3, "1000", 4)         = 4
[pid 18829] close(3)                    = 0
[pid 18829] memfd_create("syzkaller", 0) = 3
[pid 18829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18829] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18829] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18829] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18829] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18829] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18829] close(4)                    = 0
[pid 18829] close(3)                    = 0
[pid 18829] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18829] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18829] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18829] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18829] open("./bus", O_RDONLY)     = 3
[pid 18829] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18829] exit_group(0)               = ?
[pid 18829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18829, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18830 attached
, child_tidptr=0x55555606b5d0) = 18830
[pid 18830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18830] setpgid(0, 0)               = 0
[pid 18830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18830] write(3, "1000", 4)         = 4
[pid 18830] close(3)                    = 0
[pid 18830] memfd_create("syzkaller", 0) = 3
[pid 18830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18830] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18830] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18830] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18830] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18830] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18830] close(4)                    = 0
[pid 18830] close(3)                    = 0
[pid 18830] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18830] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18830] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18830] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18830] open("./bus", O_RDONLY)     = 3
[pid 18830] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18830] exit_group(0)               = ?
[pid 18830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18831 attached
, child_tidptr=0x55555606b5d0) = 18831
[pid 18831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18831] setpgid(0, 0)               = 0
[pid 18831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18831] write(3, "1000", 4)         = 4
[pid 18831] close(3)                    = 0
[pid 18831] memfd_create("syzkaller", 0) = 3
[pid 18831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18831] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18831] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18831] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18831] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18831] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18831] close(4)                    = 0
[pid 18831] close(3)                    = 0
[pid 18831] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18831] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18831] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18831] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18831] open("./bus", O_RDONLY)     = 3
[pid 18831] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18831] exit_group(0)               = ?
[pid 18831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18831, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18832
./strace-static-x86_64: Process 18832 attached
[pid 18832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18832] setpgid(0, 0)               = 0
[pid 18832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18832] write(3, "1000", 4)         = 4
[pid 18832] close(3)                    = 0
[pid 18832] memfd_create("syzkaller", 0) = 3
[pid 18832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18832] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18832] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18832] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18832] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18832] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18832] close(4)                    = 0
[pid 18832] close(3)                    = 0
[pid 18832] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18832] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18832] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18832] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18832] open("./bus", O_RDONLY)     = 3
[pid 18832] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18832] exit_group(0)               = ?
[pid 18832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18833 attached
, child_tidptr=0x55555606b5d0) = 18833
[pid 18833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18833] setpgid(0, 0)               = 0
[pid 18833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18833] write(3, "1000", 4)         = 4
[pid 18833] close(3)                    = 0
[pid 18833] memfd_create("syzkaller", 0) = 3
[pid 18833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18833] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18833] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18833] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18833] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18833] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18833] close(4)                    = 0
[pid 18833] close(3)                    = 0
[pid 18833] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18833] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18833] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18833] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18833] open("./bus", O_RDONLY)     = 3
[pid 18833] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18833] exit_group(0)               = ?
[pid 18833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18833, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18834 attached
, child_tidptr=0x55555606b5d0) = 18834
[pid 18834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18834] setpgid(0, 0)               = 0
[pid 18834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18834] write(3, "1000", 4)         = 4
[pid 18834] close(3)                    = 0
[pid 18834] memfd_create("syzkaller", 0) = 3
[pid 18834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18834] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18834] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18834] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18834] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18834] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18834] close(4)                    = 0
[pid 18834] close(3)                    = 0
[pid 18834] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18834] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18834] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18834] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18834] open("./bus", O_RDONLY)     = 3
[pid 18834] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18834] exit_group(0)               = ?
[pid 18834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18835
./strace-static-x86_64: Process 18835 attached
[pid 18835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18835] setpgid(0, 0)               = 0
[pid 18835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18835] write(3, "1000", 4)         = 4
[pid 18835] close(3)                    = 0
[pid 18835] memfd_create("syzkaller", 0) = 3
[pid 18835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18835] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18835] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18835] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18835] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18835] close(4)                    = 0
[pid 18835] close(3)                    = 0
[pid 18835] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18835] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18835] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18835] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18835] open("./bus", O_RDONLY)     = 3
[pid 18835] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18835] exit_group(0)               = ?
[pid 18835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18835, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18836 attached
, child_tidptr=0x55555606b5d0) = 18836
[pid 18836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18836] setpgid(0, 0)               = 0
[pid 18836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18836] write(3, "1000", 4)         = 4
[pid 18836] close(3)                    = 0
[pid 18836] memfd_create("syzkaller", 0) = 3
[pid 18836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18836] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18836] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18836] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18836] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18836] close(4)                    = 0
[pid 18836] close(3)                    = 0
[pid 18836] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18836] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18836] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18836] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18836] open("./bus", O_RDONLY)     = 3
[pid 18836] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18836] exit_group(0)               = ?
[pid 18836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18836, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18837 attached
, child_tidptr=0x55555606b5d0) = 18837
[pid 18837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18837] setpgid(0, 0)               = 0
[pid 18837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18837] write(3, "1000", 4)         = 4
[pid 18837] close(3)                    = 0
[pid 18837] memfd_create("syzkaller", 0) = 3
[pid 18837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18837] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18837] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18837] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18837] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18837] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18837] close(4)                    = 0
[pid 18837] close(3)                    = 0
[pid 18837] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18837] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18837] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18837] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18837] open("./bus", O_RDONLY)     = 3
[pid 18837] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18837] exit_group(0)               = ?
[pid 18837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18837, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18838
./strace-static-x86_64: Process 18838 attached
[pid 18838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18838] setpgid(0, 0)               = 0
[pid 18838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18838] write(3, "1000", 4)         = 4
[pid 18838] close(3)                    = 0
[pid 18838] memfd_create("syzkaller", 0) = 3
[pid 18838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18838] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18838] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18838] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18838] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18838] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18838] close(4)                    = 0
[pid 18838] close(3)                    = 0
[pid 18838] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18838] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18838] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18838] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18838] open("./bus", O_RDONLY)     = 3
[pid 18838] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18838] exit_group(0)               = ?
[pid 18838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18839
./strace-static-x86_64: Process 18839 attached
[pid 18839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18839] setpgid(0, 0)               = 0
[pid 18839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18839] write(3, "1000", 4)         = 4
[pid 18839] close(3)                    = 0
[pid 18839] memfd_create("syzkaller", 0) = 3
[pid 18839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18839] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18839] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18839] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18839] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18839] close(4)                    = 0
[pid 18839] close(3)                    = 0
[pid 18839] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18839] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18839] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18839] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18839] open("./bus", O_RDONLY)     = 3
[pid 18839] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18839] exit_group(0)               = ?
[pid 18839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18839, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18840
./strace-static-x86_64: Process 18840 attached
[pid 18840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18840] setpgid(0, 0)               = 0
[pid 18840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18840] write(3, "1000", 4)         = 4
[pid 18840] close(3)                    = 0
[pid 18840] memfd_create("syzkaller", 0) = 3
[pid 18840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18840] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18840] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18840] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18840] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18840] close(4)                    = 0
[pid 18840] close(3)                    = 0
[pid 18840] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18840] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18840] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18840] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18840] open("./bus", O_RDONLY)     = 3
[pid 18840] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18840] exit_group(0)               = ?
[pid 18840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18841 attached
, child_tidptr=0x55555606b5d0) = 18841
[pid 18841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18841] setpgid(0, 0)               = 0
[pid 18841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18841] write(3, "1000", 4)         = 4
[pid 18841] close(3)                    = 0
[pid 18841] memfd_create("syzkaller", 0) = 3
[pid 18841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18841] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18841] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18841] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18841] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18841] close(4)                    = 0
[pid 18841] close(3)                    = 0
[pid 18841] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18841] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18841] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18841] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18841] open("./bus", O_RDONLY)     = 3
[pid 18841] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18841] exit_group(0)               = ?
[pid 18841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18841, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18842
./strace-static-x86_64: Process 18842 attached
[pid 18842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18842] setpgid(0, 0)               = 0
[pid 18842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18842] write(3, "1000", 4)         = 4
[pid 18842] close(3)                    = 0
[pid 18842] memfd_create("syzkaller", 0) = 3
[pid 18842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18842] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18842] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18842] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18842] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18842] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18842] close(4)                    = 0
[pid 18842] close(3)                    = 0
[pid 18842] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18842] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18842] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18842] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18842] open("./bus", O_RDONLY)     = 3
[pid 18842] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18842] exit_group(0)               = ?
[pid 18842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18843 attached
, child_tidptr=0x55555606b5d0) = 18843
[pid 18843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18843] setpgid(0, 0)               = 0
[pid 18843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18843] write(3, "1000", 4)         = 4
[pid 18843] close(3)                    = 0
[pid 18843] memfd_create("syzkaller", 0) = 3
[pid 18843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18843] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18843] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18843] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18843] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18843] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18843] close(4)                    = 0
[pid 18843] close(3)                    = 0
[pid 18843] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18843] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18843] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18843] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18843] open("./bus", O_RDONLY)     = 3
[pid 18843] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18843] exit_group(0)               = ?
[pid 18843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18843, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18844 attached
, child_tidptr=0x55555606b5d0) = 18844
[pid 18844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18844] setpgid(0, 0)               = 0
[pid 18844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18844] write(3, "1000", 4)         = 4
[pid 18844] close(3)                    = 0
[pid 18844] memfd_create("syzkaller", 0) = 3
[pid 18844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18844] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18844] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18844] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18844] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18844] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18844] close(4)                    = 0
[pid 18844] close(3)                    = 0
[pid 18844] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18844] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18844] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18844] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18844] open("./bus", O_RDONLY)     = 3
[pid 18844] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18844] exit_group(0)               = ?
[pid 18844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18845 attached
, child_tidptr=0x55555606b5d0) = 18845
[pid 18845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18845] setpgid(0, 0)               = 0
[pid 18845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18845] write(3, "1000", 4)         = 4
[pid 18845] close(3)                    = 0
[pid 18845] memfd_create("syzkaller", 0) = 3
[pid 18845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18845] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18845] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18845] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18845] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18845] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18845] close(4)                    = 0
[pid 18845] close(3)                    = 0
[pid 18845] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18845] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18845] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18845] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18845] open("./bus", O_RDONLY)     = 3
[pid 18845] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18845] exit_group(0)               = ?
[pid 18845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18845, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18846 attached
, child_tidptr=0x55555606b5d0) = 18846
[pid 18846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18846] setpgid(0, 0)               = 0
[pid 18846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18846] write(3, "1000", 4)         = 4
[pid 18846] close(3)                    = 0
[pid 18846] memfd_create("syzkaller", 0) = 3
[pid 18846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18846] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18846] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18846] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18846] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18846] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18846] close(4)                    = 0
[pid 18846] close(3)                    = 0
[pid 18846] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18846] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18846] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18846] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18846] open("./bus", O_RDONLY)     = 3
[pid 18846] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18846] exit_group(0)               = ?
[pid 18846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18846, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18847
./strace-static-x86_64: Process 18847 attached
[pid 18847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18847] setpgid(0, 0)               = 0
[pid 18847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18847] write(3, "1000", 4)         = 4
[pid 18847] close(3)                    = 0
[pid 18847] memfd_create("syzkaller", 0) = 3
[pid 18847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18847] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18847] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18847] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18847] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18847] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18847] close(4)                    = 0
[pid 18847] close(3)                    = 0
[pid 18847] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18847] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18847] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18847] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18847] open("./bus", O_RDONLY)     = 3
[pid 18847] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18847] exit_group(0)               = ?
[pid 18847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18847, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18848
./strace-static-x86_64: Process 18848 attached
[pid 18848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18848] setpgid(0, 0)               = 0
[pid 18848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18848] write(3, "1000", 4)         = 4
[pid 18848] close(3)                    = 0
[pid 18848] memfd_create("syzkaller", 0) = 3
[pid 18848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18848] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18848] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18848] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18848] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18848] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18848] close(4)                    = 0
[pid 18848] close(3)                    = 0
[pid 18848] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18848] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18848] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18848] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18848] open("./bus", O_RDONLY)     = 3
[pid 18848] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18848] exit_group(0)               = ?
[pid 18848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18848, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18849 attached
, child_tidptr=0x55555606b5d0) = 18849
[pid 18849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18849] setpgid(0, 0)               = 0
[pid 18849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18849] write(3, "1000", 4)         = 4
[pid 18849] close(3)                    = 0
[pid 18849] memfd_create("syzkaller", 0) = 3
[pid 18849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18849] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18849] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18849] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18849] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18849] close(4)                    = 0
[pid 18849] close(3)                    = 0
[pid 18849] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18849] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18849] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18849] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18849] open("./bus", O_RDONLY)     = 3
[pid 18849] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18849] exit_group(0)               = ?
[pid 18849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18849, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18850 attached
, child_tidptr=0x55555606b5d0) = 18850
[pid 18850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18850] setpgid(0, 0)               = 0
[pid 18850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18850] write(3, "1000", 4)         = 4
[pid 18850] close(3)                    = 0
[pid 18850] memfd_create("syzkaller", 0) = 3
[pid 18850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18850] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18850] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18850] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18850] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18850] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18850] close(4)                    = 0
[pid 18850] close(3)                    = 0
[pid 18850] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18850] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18850] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18850] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18850] open("./bus", O_RDONLY)     = 3
[pid 18850] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18850] exit_group(0)               = ?
[pid 18850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18851
./strace-static-x86_64: Process 18851 attached
[pid 18851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18851] setpgid(0, 0)               = 0
[pid 18851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18851] write(3, "1000", 4)         = 4
[pid 18851] close(3)                    = 0
[pid 18851] memfd_create("syzkaller", 0) = 3
[pid 18851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18851] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18851] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18851] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18851] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18851] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18851] close(4)                    = 0
[pid 18851] close(3)                    = 0
[pid 18851] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18851] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18851] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18851] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18851] open("./bus", O_RDONLY)     = 3
[pid 18851] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18851] exit_group(0)               = ?
[pid 18851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18851, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18852
./strace-static-x86_64: Process 18852 attached
[pid 18852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18852] setpgid(0, 0)               = 0
[pid 18852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18852] write(3, "1000", 4)         = 4
[pid 18852] close(3)                    = 0
[pid 18852] memfd_create("syzkaller", 0) = 3
[pid 18852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18852] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18852] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18852] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18852] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18852] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18852] close(4)                    = 0
[pid 18852] close(3)                    = 0
[pid 18852] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18852] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18852] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18852] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18852] open("./bus", O_RDONLY)     = 3
[pid 18852] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18852] exit_group(0)               = ?
[pid 18852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18853 attached
, child_tidptr=0x55555606b5d0) = 18853
[pid 18853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18853] setpgid(0, 0)               = 0
[pid 18853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18853] write(3, "1000", 4)         = 4
[pid 18853] close(3)                    = 0
[pid 18853] memfd_create("syzkaller", 0) = 3
[pid 18853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18853] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18853] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18853] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18853] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18853] close(4)                    = 0
[pid 18853] close(3)                    = 0
[pid 18853] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18853] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18853] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18853] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18853] open("./bus", O_RDONLY)     = 3
[pid 18853] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18853] exit_group(0)               = ?
[pid 18853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18853, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18854 attached
, child_tidptr=0x55555606b5d0) = 18854
[pid 18854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18854] setpgid(0, 0)               = 0
[pid 18854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18854] write(3, "1000", 4)         = 4
[pid 18854] close(3)                    = 0
[pid 18854] memfd_create("syzkaller", 0) = 3
[pid 18854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18854] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18854] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18854] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18854] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18854] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18854] close(4)                    = 0
[pid 18854] close(3)                    = 0
[pid 18854] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18854] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18854] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18854] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18854] open("./bus", O_RDONLY)     = 3
[pid 18854] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18854] exit_group(0)               = ?
[pid 18854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18855
./strace-static-x86_64: Process 18855 attached
[pid 18855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18855] setpgid(0, 0)               = 0
[pid 18855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18855] write(3, "1000", 4)         = 4
[pid 18855] close(3)                    = 0
[pid 18855] memfd_create("syzkaller", 0) = 3
[pid 18855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18855] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18855] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18855] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18855] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18855] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18855] close(4)                    = 0
[pid 18855] close(3)                    = 0
[pid 18855] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18855] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18855] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18855] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18855] open("./bus", O_RDONLY)     = 3
[pid 18855] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18855] exit_group(0)               = ?
[pid 18855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18855, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18856 attached
, child_tidptr=0x55555606b5d0) = 18856
[pid 18856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18856] setpgid(0, 0)               = 0
[pid 18856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18856] write(3, "1000", 4)         = 4
[pid 18856] close(3)                    = 0
[pid 18856] memfd_create("syzkaller", 0) = 3
[pid 18856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18856] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18856] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18856] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18856] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18856] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18856] close(4)                    = 0
[pid 18856] close(3)                    = 0
[pid 18856] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18856] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18856] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18856] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18856] open("./bus", O_RDONLY)     = 3
[pid 18856] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18856] exit_group(0)               = ?
[pid 18856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18857
./strace-static-x86_64: Process 18857 attached
[pid 18857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18857] setpgid(0, 0)               = 0
[pid 18857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18857] write(3, "1000", 4)         = 4
[pid 18857] close(3)                    = 0
[pid 18857] memfd_create("syzkaller", 0) = 3
[pid 18857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18857] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18857] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18857] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18857] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18857] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18857] close(4)                    = 0
[pid 18857] close(3)                    = 0
[pid 18857] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18857] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18857] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18857] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18857] open("./bus", O_RDONLY)     = 3
[pid 18857] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18857] exit_group(0)               = ?
[pid 18857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18857, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18858
./strace-static-x86_64: Process 18858 attached
[pid 18858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18858] setpgid(0, 0)               = 0
[pid 18858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18858] write(3, "1000", 4)         = 4
[pid 18858] close(3)                    = 0
[pid 18858] memfd_create("syzkaller", 0) = 3
[pid 18858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18858] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18858] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18858] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18858] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18858] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18858] close(4)                    = 0
[pid 18858] close(3)                    = 0
[pid 18858] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18858] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18858] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18858] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18858] open("./bus", O_RDONLY)     = 3
[pid 18858] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18858] exit_group(0)               = ?
[pid 18858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18859 attached
, child_tidptr=0x55555606b5d0) = 18859
[pid 18859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18859] setpgid(0, 0)               = 0
[pid 18859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18859] write(3, "1000", 4)         = 4
[pid 18859] close(3)                    = 0
[pid 18859] memfd_create("syzkaller", 0) = 3
[pid 18859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18859] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18859] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18859] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18859] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18859] close(4)                    = 0
[pid 18859] close(3)                    = 0
[pid 18859] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18859] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18859] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18859] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18859] open("./bus", O_RDONLY)     = 3
[pid 18859] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18859] exit_group(0)               = ?
[pid 18859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18859, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18860
./strace-static-x86_64: Process 18860 attached
[pid 18860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18860] setpgid(0, 0)               = 0
[pid 18860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18860] write(3, "1000", 4)         = 4
[pid 18860] close(3)                    = 0
[pid 18860] memfd_create("syzkaller", 0) = 3
[pid 18860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18860] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18860] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18860] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18860] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18860] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18860] close(4)                    = 0
[pid 18860] close(3)                    = 0
[pid 18860] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18860] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18860] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18860] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18860] open("./bus", O_RDONLY)     = 3
[pid 18860] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18860] exit_group(0)               = ?
[pid 18860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18860, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18861 attached
, child_tidptr=0x55555606b5d0) = 18861
[pid 18861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18861] setpgid(0, 0)               = 0
[pid 18861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18861] write(3, "1000", 4)         = 4
[pid 18861] close(3)                    = 0
[pid 18861] memfd_create("syzkaller", 0) = 3
[pid 18861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18861] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18861] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18861] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18861] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18861] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18861] close(4)                    = 0
[pid 18861] close(3)                    = 0
[pid 18861] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18861] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18861] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18861] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18861] open("./bus", O_RDONLY)     = 3
[pid 18861] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18861] exit_group(0)               = ?
[pid 18861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18861, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18862
./strace-static-x86_64: Process 18862 attached
[pid 18862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18862] setpgid(0, 0)               = 0
[pid 18862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18862] write(3, "1000", 4)         = 4
[pid 18862] close(3)                    = 0
[pid 18862] memfd_create("syzkaller", 0) = 3
[pid 18862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18862] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18862] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18862] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18862] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18862] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18862] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18862] close(4)                    = 0
[pid 18862] close(3)                    = 0
[pid 18862] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18862] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18862] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18862] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18862] open("./bus", O_RDONLY)     = 3
[pid 18862] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18862] exit_group(0)               = ?
[pid 18862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18863 attached
, child_tidptr=0x55555606b5d0) = 18863
[pid 18863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18863] setpgid(0, 0)               = 0
[pid 18863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18863] write(3, "1000", 4)         = 4
[pid 18863] close(3)                    = 0
[pid 18863] memfd_create("syzkaller", 0) = 3
[pid 18863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18863] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18863] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18863] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18863] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18863] close(4)                    = 0
[pid 18863] close(3)                    = 0
[pid 18863] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18863] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18863] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18863] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18863] open("./bus", O_RDONLY)     = 3
[pid 18863] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18863] exit_group(0)               = ?
[pid 18863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18863, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18864
./strace-static-x86_64: Process 18864 attached
[pid 18864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18864] setpgid(0, 0)               = 0
[pid 18864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18864] write(3, "1000", 4)         = 4
[pid 18864] close(3)                    = 0
[pid 18864] memfd_create("syzkaller", 0) = 3
[pid 18864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18864] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18864] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18864] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18864] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18864] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18864] close(4)                    = 0
[pid 18864] close(3)                    = 0
[pid 18864] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18864] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18864] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18864] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18864] open("./bus", O_RDONLY)     = 3
[pid 18864] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18864] exit_group(0)               = ?
[pid 18864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18865 attached
, child_tidptr=0x55555606b5d0) = 18865
[pid 18865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18865] setpgid(0, 0)               = 0
[pid 18865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18865] write(3, "1000", 4)         = 4
[pid 18865] close(3)                    = 0
[pid 18865] memfd_create("syzkaller", 0) = 3
[pid 18865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18865] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18865] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18865] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18865] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18865] close(4)                    = 0
[pid 18865] close(3)                    = 0
[pid 18865] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18865] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18865] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18865] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18865] open("./bus", O_RDONLY)     = 3
[pid 18865] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18865] exit_group(0)               = ?
[pid 18865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18865, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18866 attached
, child_tidptr=0x55555606b5d0) = 18866
[pid 18866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18866] setpgid(0, 0)               = 0
[pid 18866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18866] write(3, "1000", 4)         = 4
[pid 18866] close(3)                    = 0
[pid 18866] memfd_create("syzkaller", 0) = 3
[pid 18866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18866] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18866] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18866] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18866] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18866] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18866] close(4)                    = 0
[pid 18866] close(3)                    = 0
[pid 18866] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18866] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18866] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18866] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18866] open("./bus", O_RDONLY)     = 3
[pid 18866] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18866] exit_group(0)               = ?
[pid 18866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18866, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18867
./strace-static-x86_64: Process 18867 attached
[pid 18867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18867] setpgid(0, 0)               = 0
[pid 18867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18867] write(3, "1000", 4)         = 4
[pid 18867] close(3)                    = 0
[pid 18867] memfd_create("syzkaller", 0) = 3
[pid 18867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18867] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18867] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18867] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18867] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18867] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18867] close(4)                    = 0
[pid 18867] close(3)                    = 0
[pid 18867] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18867] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18867] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18867] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18867] open("./bus", O_RDONLY)     = 3
[pid 18867] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18867] exit_group(0)               = ?
[pid 18867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18867, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18868 attached
, child_tidptr=0x55555606b5d0) = 18868
[pid 18868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18868] setpgid(0, 0)               = 0
[pid 18868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18868] write(3, "1000", 4)         = 4
[pid 18868] close(3)                    = 0
[pid 18868] memfd_create("syzkaller", 0) = 3
[pid 18868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18868] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18868] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18868] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18868] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18868] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18868] close(4)                    = 0
[pid 18868] close(3)                    = 0
[pid 18868] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18868] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18868] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18868] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18868] open("./bus", O_RDONLY)     = 3
[pid 18868] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18868] exit_group(0)               = ?
[pid 18868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18868, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18869 attached
, child_tidptr=0x55555606b5d0) = 18869
[pid 18869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18869] setpgid(0, 0)               = 0
[pid 18869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18869] write(3, "1000", 4)         = 4
[pid 18869] close(3)                    = 0
[pid 18869] memfd_create("syzkaller", 0) = 3
[pid 18869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18869] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18869] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18869] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18869] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18869] close(4)                    = 0
[pid 18869] close(3)                    = 0
[pid 18869] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18869] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18869] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18869] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18869] open("./bus", O_RDONLY)     = 3
[pid 18869] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18869] exit_group(0)               = ?
[pid 18869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18869, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18870
./strace-static-x86_64: Process 18870 attached
[pid 18870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18870] setpgid(0, 0)               = 0
[pid 18870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18870] write(3, "1000", 4)         = 4
[pid 18870] close(3)                    = 0
[pid 18870] memfd_create("syzkaller", 0) = 3
[pid 18870] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18870] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18870] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18870] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18870] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18870] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18870] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18870] close(4)                    = 0
[pid 18870] close(3)                    = 0
[pid 18870] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18870] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18870] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18870] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18870] open("./bus", O_RDONLY)     = 3
[pid 18870] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18870] exit_group(0)               = ?
[pid 18870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18871
./strace-static-x86_64: Process 18871 attached
[pid 18871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18871] setpgid(0, 0)               = 0
[pid 18871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18871] write(3, "1000", 4)         = 4
[pid 18871] close(3)                    = 0
[pid 18871] memfd_create("syzkaller", 0) = 3
[pid 18871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18871] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18871] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18871] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18871] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18871] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18871] close(4)                    = 0
[pid 18871] close(3)                    = 0
[pid 18871] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18871] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18871] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18871] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18871] open("./bus", O_RDONLY)     = 3
[pid 18871] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18871] exit_group(0)               = ?
[pid 18871] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18871, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18872 attached
, child_tidptr=0x55555606b5d0) = 18872
[pid 18872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18872] setpgid(0, 0)               = 0
[pid 18872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18872] write(3, "1000", 4)         = 4
[pid 18872] close(3)                    = 0
[pid 18872] memfd_create("syzkaller", 0) = 3
[pid 18872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18872] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18872] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18872] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18872] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18872] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18872] close(4)                    = 0
[pid 18872] close(3)                    = 0
[pid 18872] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18872] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18872] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18872] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18872] open("./bus", O_RDONLY)     = 3
[pid 18872] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18872] exit_group(0)               = ?
[pid 18872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18873
./strace-static-x86_64: Process 18873 attached
[pid 18873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18873] setpgid(0, 0)               = 0
[pid 18873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18873] write(3, "1000", 4)         = 4
[pid 18873] close(3)                    = 0
[pid 18873] memfd_create("syzkaller", 0) = 3
[pid 18873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18873] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18873] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18873] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18873] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18873] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18873] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18873] close(4)                    = 0
[pid 18873] close(3)                    = 0
[pid 18873] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18873] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18873] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18873] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18873] open("./bus", O_RDONLY)     = 3
[pid 18873] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18873] exit_group(0)               = ?
[pid 18873] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18873, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18874 attached
, child_tidptr=0x55555606b5d0) = 18874
[pid 18874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18874] setpgid(0, 0)               = 0
[pid 18874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18874] write(3, "1000", 4)         = 4
[pid 18874] close(3)                    = 0
[pid 18874] memfd_create("syzkaller", 0) = 3
[pid 18874] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18874] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18874] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18874] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18874] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18874] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18874] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18874] close(4)                    = 0
[pid 18874] close(3)                    = 0
[pid 18874] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18874] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18874] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18874] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18874] open("./bus", O_RDONLY)     = 3
[pid 18874] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18874] exit_group(0)               = ?
[pid 18874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18875 attached
, child_tidptr=0x55555606b5d0) = 18875
[pid 18875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18875] setpgid(0, 0)               = 0
[pid 18875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18875] write(3, "1000", 4)         = 4
[pid 18875] close(3)                    = 0
[pid 18875] memfd_create("syzkaller", 0) = 3
[pid 18875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18875] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18875] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18875] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18875] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18875] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18875] close(4)                    = 0
[pid 18875] close(3)                    = 0
[pid 18875] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18875] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18875] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18875] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18875] open("./bus", O_RDONLY)     = 3
[pid 18875] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18875] exit_group(0)               = ?
[pid 18875] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18875, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18876
./strace-static-x86_64: Process 18876 attached
[pid 18876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18876] setpgid(0, 0)               = 0
[pid 18876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18876] write(3, "1000", 4)         = 4
[pid 18876] close(3)                    = 0
[pid 18876] memfd_create("syzkaller", 0) = 3
[pid 18876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18876] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18876] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18876] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18876] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18876] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18876] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18876] close(4)                    = 0
[pid 18876] close(3)                    = 0
[pid 18876] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18876] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18876] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18876] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18876] open("./bus", O_RDONLY)     = 3
[pid 18876] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18876] exit_group(0)               = ?
[pid 18876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18877 attached
, child_tidptr=0x55555606b5d0) = 18877
[pid 18877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18877] setpgid(0, 0)               = 0
[pid 18877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18877] write(3, "1000", 4)         = 4
[pid 18877] close(3)                    = 0
[pid 18877] memfd_create("syzkaller", 0) = 3
[pid 18877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18877] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18877] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18877] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18877] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18877] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18877] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18877] close(4)                    = 0
[pid 18877] close(3)                    = 0
[pid 18877] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18877] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18877] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18877] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18877] open("./bus", O_RDONLY)     = 3
[pid 18877] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18877] exit_group(0)               = ?
[pid 18877] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18877, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18878 attached
, child_tidptr=0x55555606b5d0) = 18878
[pid 18878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18878] setpgid(0, 0)               = 0
[pid 18878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18878] write(3, "1000", 4)         = 4
[pid 18878] close(3)                    = 0
[pid 18878] memfd_create("syzkaller", 0) = 3
[pid 18878] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18878] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18878] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18878] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18878] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18878] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18878] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18878] close(4)                    = 0
[pid 18878] close(3)                    = 0
[pid 18878] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18878] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18878] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18878] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18878] open("./bus", O_RDONLY)     = 3
[pid 18878] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18878] exit_group(0)               = ?
[pid 18878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18879
./strace-static-x86_64: Process 18879 attached
[pid 18879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18879] setpgid(0, 0)               = 0
[pid 18879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18879] write(3, "1000", 4)         = 4
[pid 18879] close(3)                    = 0
[pid 18879] memfd_create("syzkaller", 0) = 3
[pid 18879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18879] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18879] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18879] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18879] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18879] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18879] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18879] close(4)                    = 0
[pid 18879] close(3)                    = 0
[pid 18879] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18879] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18879] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18879] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18879] open("./bus", O_RDONLY)     = 3
[pid 18879] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18879] exit_group(0)               = ?
[pid 18879] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18879, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18880
./strace-static-x86_64: Process 18880 attached
[pid 18880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18880] setpgid(0, 0)               = 0
[pid 18880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18880] write(3, "1000", 4)         = 4
[pid 18880] close(3)                    = 0
[pid 18880] memfd_create("syzkaller", 0) = 3
[pid 18880] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18880] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18880] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18880] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18880] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18880] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18880] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18880] close(4)                    = 0
[pid 18880] close(3)                    = 0
[pid 18880] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18880] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18880] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18880] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18880] open("./bus", O_RDONLY)     = 3
[pid 18880] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18880] exit_group(0)               = ?
[pid 18880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18880, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18881
./strace-static-x86_64: Process 18881 attached
[pid 18881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18881] setpgid(0, 0)               = 0
[pid 18881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18881] write(3, "1000", 4)         = 4
[pid 18881] close(3)                    = 0
[pid 18881] memfd_create("syzkaller", 0) = 3
[pid 18881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18881] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18881] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18881] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18881] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18881] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18881] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18881] close(4)                    = 0
[pid 18881] close(3)                    = 0
[pid 18881] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18881] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18881] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18881] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18881] open("./bus", O_RDONLY)     = 3
[pid 18881] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18881] exit_group(0)               = ?
[pid 18881] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18881, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18882 attached
, child_tidptr=0x55555606b5d0) = 18882
[pid 18882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18882] setpgid(0, 0)               = 0
[pid 18882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18882] write(3, "1000", 4)         = 4
[pid 18882] close(3)                    = 0
[pid 18882] memfd_create("syzkaller", 0) = 3
[pid 18882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18882] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18882] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18882] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18882] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18882] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18882] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18882] close(4)                    = 0
[pid 18882] close(3)                    = 0
[pid 18882] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18882] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18882] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18882] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18882] open("./bus", O_RDONLY)     = 3
[pid 18882] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18882] exit_group(0)               = ?
[pid 18882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18883 attached
, child_tidptr=0x55555606b5d0) = 18883
[pid 18883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18883] setpgid(0, 0)               = 0
[pid 18883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18883] write(3, "1000", 4)         = 4
[pid 18883] close(3)                    = 0
[pid 18883] memfd_create("syzkaller", 0) = 3
[pid 18883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18883] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18883] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18883] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18883] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18883] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18883] close(4)                    = 0
[pid 18883] close(3)                    = 0
[pid 18883] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18883] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18883] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18883] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18883] open("./bus", O_RDONLY)     = 3
[pid 18883] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18883] exit_group(0)               = ?
[pid 18883] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18883, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18884
./strace-static-x86_64: Process 18884 attached
[pid 18884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18884] setpgid(0, 0)               = 0
[pid 18884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18884] write(3, "1000", 4)         = 4
[pid 18884] close(3)                    = 0
[pid 18884] memfd_create("syzkaller", 0) = 3
[pid 18884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18884] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18884] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18884] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18884] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18884] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18884] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18884] close(4)                    = 0
[pid 18884] close(3)                    = 0
[pid 18884] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18884] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18884] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18884] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18884] open("./bus", O_RDONLY)     = 3
[pid 18884] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18884] exit_group(0)               = ?
[pid 18884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18885 attached
, child_tidptr=0x55555606b5d0) = 18885
[pid 18885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18885] setpgid(0, 0)               = 0
[pid 18885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18885] write(3, "1000", 4)         = 4
[pid 18885] close(3)                    = 0
[pid 18885] memfd_create("syzkaller", 0) = 3
[pid 18885] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18885] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18885] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18885] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18885] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18885] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18885] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18885] close(4)                    = 0
[pid 18885] close(3)                    = 0
[pid 18885] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18885] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18885] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18885] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18885] open("./bus", O_RDONLY)     = 3
[pid 18885] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18885] exit_group(0)               = ?
[pid 18885] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18885, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18886 attached
, child_tidptr=0x55555606b5d0) = 18886
[pid 18886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18886] setpgid(0, 0)               = 0
[pid 18886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18886] write(3, "1000", 4)         = 4
[pid 18886] close(3)                    = 0
[pid 18886] memfd_create("syzkaller", 0) = 3
[pid 18886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18886] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18886] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18886] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18886] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18886] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18886] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18886] close(4)                    = 0
[pid 18886] close(3)                    = 0
[pid 18886] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18886] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18886] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18886] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18886] open("./bus", O_RDONLY)     = 3
[pid 18886] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18886] exit_group(0)               = ?
[pid 18886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18887 attached
, child_tidptr=0x55555606b5d0) = 18887
[pid 18887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18887] setpgid(0, 0)               = 0
[pid 18887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18887] write(3, "1000", 4)         = 4
[pid 18887] close(3)                    = 0
[pid 18887] memfd_create("syzkaller", 0) = 3
[pid 18887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18887] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18887] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18887] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18887] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18887] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18887] close(4)                    = 0
[pid 18887] close(3)                    = 0
[pid 18887] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18887] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18887] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18887] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18887] open("./bus", O_RDONLY)     = 3
[pid 18887] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18887] exit_group(0)               = ?
[pid 18887] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18887, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18888
./strace-static-x86_64: Process 18888 attached
[pid 18888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18888] setpgid(0, 0)               = 0
[pid 18888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18888] write(3, "1000", 4)         = 4
[pid 18888] close(3)                    = 0
[pid 18888] memfd_create("syzkaller", 0) = 3
[pid 18888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18888] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18888] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18888] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18888] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18888] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18888] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18888] close(4)                    = 0
[pid 18888] close(3)                    = 0
[pid 18888] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18888] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18888] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18888] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18888] open("./bus", O_RDONLY)     = 3
[pid 18888] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18888] exit_group(0)               = ?
[pid 18888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18889
./strace-static-x86_64: Process 18889 attached
[pid 18889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18889] setpgid(0, 0)               = 0
[pid 18889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18889] write(3, "1000", 4)         = 4
[pid 18889] close(3)                    = 0
[pid 18889] memfd_create("syzkaller", 0) = 3
[pid 18889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18889] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18889] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18889] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18889] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18889] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18889] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18889] close(4)                    = 0
[pid 18889] close(3)                    = 0
[pid 18889] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18889] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18889] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18889] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18889] open("./bus", O_RDONLY)     = 3
[pid 18889] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18889] exit_group(0)               = ?
[pid 18889] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18889, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18890 attached
, child_tidptr=0x55555606b5d0) = 18890
[pid 18890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18890] setpgid(0, 0)               = 0
[pid 18890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18890] write(3, "1000", 4)         = 4
[pid 18890] close(3)                    = 0
[pid 18890] memfd_create("syzkaller", 0) = 3
[pid 18890] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18890] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18890] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18890] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18890] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18890] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18890] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18890] close(4)                    = 0
[pid 18890] close(3)                    = 0
[pid 18890] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18890] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18890] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18890] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18890] open("./bus", O_RDONLY)     = 3
[pid 18890] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18890] exit_group(0)               = ?
[pid 18890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18891
./strace-static-x86_64: Process 18891 attached
[pid 18891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18891] setpgid(0, 0)               = 0
[pid 18891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18891] write(3, "1000", 4)         = 4
[pid 18891] close(3)                    = 0
[pid 18891] memfd_create("syzkaller", 0) = 3
[pid 18891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18891] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18891] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18891] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18891] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18891] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18891] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18891] close(4)                    = 0
[pid 18891] close(3)                    = 0
[pid 18891] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18891] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18891] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18891] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18891] open("./bus", O_RDONLY)     = 3
[pid 18891] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18891] exit_group(0)               = ?
[pid 18891] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18891, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18892 attached
 <unfinished ...>
[pid 18892] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18892
[pid 18892] <... prctl resumed>)        = 0
[pid 18892] setpgid(0, 0)               = 0
[pid 18892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18892] write(3, "1000", 4)         = 4
[pid 18892] close(3)                    = 0
[pid 18892] memfd_create("syzkaller", 0) = 3
[pid 18892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18892] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18892] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18892] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18892] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18892] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18892] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18892] close(4)                    = 0
[pid 18892] close(3)                    = 0
[pid 18892] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18892] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18892] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18892] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18892] open("./bus", O_RDONLY)     = 3
[pid 18892] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18892] exit_group(0)               = ?
[pid 18892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18893 attached
, child_tidptr=0x55555606b5d0) = 18893
[pid 18893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18893] setpgid(0, 0)               = 0
[pid 18893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18893] write(3, "1000", 4)         = 4
[pid 18893] close(3)                    = 0
[pid 18893] memfd_create("syzkaller", 0) = 3
[pid 18893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18893] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18893] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18893] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18893] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18893] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18893] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18893] close(4)                    = 0
[pid 18893] close(3)                    = 0
[pid 18893] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18893] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18893] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18893] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18893] open("./bus", O_RDONLY)     = 3
[pid 18893] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18893] exit_group(0)               = ?
[pid 18893] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18893, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18894 attached
, child_tidptr=0x55555606b5d0) = 18894
[pid 18894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18894] setpgid(0, 0)               = 0
[pid 18894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18894] write(3, "1000", 4)         = 4
[pid 18894] close(3)                    = 0
[pid 18894] memfd_create("syzkaller", 0) = 3
[pid 18894] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18894] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18894] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18894] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18894] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18894] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18894] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18894] close(4)                    = 0
[pid 18894] close(3)                    = 0
[pid 18894] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18894] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18894] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18894] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18894] open("./bus", O_RDONLY)     = 3
[pid 18894] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18894] exit_group(0)               = ?
[pid 18894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18895 attached
, child_tidptr=0x55555606b5d0) = 18895
[pid 18895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18895] setpgid(0, 0)               = 0
[pid 18895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18895] write(3, "1000", 4)         = 4
[pid 18895] close(3)                    = 0
[pid 18895] memfd_create("syzkaller", 0) = 3
[pid 18895] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18895] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18895] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18895] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18895] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18895] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18895] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18895] close(4)                    = 0
[pid 18895] close(3)                    = 0
[pid 18895] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18895] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18895] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18895] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18895] open("./bus", O_RDONLY)     = 3
[pid 18895] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18895] exit_group(0)               = ?
[pid 18895] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18895, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18896
./strace-static-x86_64: Process 18896 attached
[pid 18896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18896] setpgid(0, 0)               = 0
[pid 18896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18896] write(3, "1000", 4)         = 4
[pid 18896] close(3)                    = 0
[pid 18896] memfd_create("syzkaller", 0) = 3
[pid 18896] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18896] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18896] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18896] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18896] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18896] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18896] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18896] close(4)                    = 0
[pid 18896] close(3)                    = 0
[pid 18896] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18896] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18896] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18896] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18896] open("./bus", O_RDONLY)     = 3
[pid 18896] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18896] exit_group(0)               = ?
[pid 18896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18897
./strace-static-x86_64: Process 18897 attached
[pid 18897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18897] setpgid(0, 0)               = 0
[pid 18897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18897] write(3, "1000", 4)         = 4
[pid 18897] close(3)                    = 0
[pid 18897] memfd_create("syzkaller", 0) = 3
[pid 18897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18897] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18897] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18897] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18897] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18897] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18897] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18897] close(4)                    = 0
[pid 18897] close(3)                    = 0
[pid 18897] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18897] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18897] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18897] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18897] open("./bus", O_RDONLY)     = 3
[pid 18897] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18897] exit_group(0)               = ?
[pid 18897] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18897, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18898 attached
 <unfinished ...>
[pid 18898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18898] setpgid(0, 0)               = 0
[pid 18898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18898
[pid 18898] <... openat resumed>)       = 3
[pid 18898] write(3, "1000", 4)         = 4
[pid 18898] close(3)                    = 0
[pid 18898] memfd_create("syzkaller", 0) = 3
[pid 18898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18898] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18898] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18898] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18898] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18898] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18898] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18898] close(4)                    = 0
[pid 18898] close(3)                    = 0
[pid 18898] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18898] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18898] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18898] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18898] open("./bus", O_RDONLY)     = 3
[pid 18898] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18898] exit_group(0)               = ?
[pid 18898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18898, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18899
./strace-static-x86_64: Process 18899 attached
[pid 18899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18899] setpgid(0, 0)               = 0
[pid 18899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18899] write(3, "1000", 4)         = 4
[pid 18899] close(3)                    = 0
[pid 18899] memfd_create("syzkaller", 0) = 3
[pid 18899] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18899] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18899] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18899] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18899] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18899] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18899] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18899] close(4)                    = 0
[pid 18899] close(3)                    = 0
[pid 18899] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18899] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18899] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18899] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18899] open("./bus", O_RDONLY)     = 3
[pid 18899] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18899] exit_group(0)               = ?
[pid 18899] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18899, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18900
./strace-static-x86_64: Process 18900 attached
[pid 18900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18900] setpgid(0, 0)               = 0
[pid 18900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18900] write(3, "1000", 4)         = 4
[pid 18900] close(3)                    = 0
[pid 18900] memfd_create("syzkaller", 0) = 3
[pid 18900] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18900] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18900] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18900] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18900] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18900] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18900] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18900] close(4)                    = 0
[pid 18900] close(3)                    = 0
[pid 18900] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18900] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18900] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18900] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18900] open("./bus", O_RDONLY)     = 3
[pid 18900] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18900] exit_group(0)               = ?
[pid 18900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18901
./strace-static-x86_64: Process 18901 attached
[pid 18901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18901] setpgid(0, 0)               = 0
[pid 18901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18901] write(3, "1000", 4)         = 4
[pid 18901] close(3)                    = 0
[pid 18901] memfd_create("syzkaller", 0) = 3
[pid 18901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18901] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18901] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18901] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18901] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18901] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18901] close(4)                    = 0
[pid 18901] close(3)                    = 0
[pid 18901] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18901] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18901] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18901] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18901] open("./bus", O_RDONLY)     = 3
[pid 18901] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18901] exit_group(0)               = ?
[pid 18901] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18901, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18902
./strace-static-x86_64: Process 18902 attached
[pid 18902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18902] setpgid(0, 0)               = 0
[pid 18902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18902] write(3, "1000", 4)         = 4
[pid 18902] close(3)                    = 0
[pid 18902] memfd_create("syzkaller", 0) = 3
[pid 18902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18902] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18902] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18902] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18902] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18902] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18902] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18902] close(4)                    = 0
[pid 18902] close(3)                    = 0
[pid 18902] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18902] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18902] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18902] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18902] open("./bus", O_RDONLY)     = 3
[pid 18902] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18902] exit_group(0)               = ?
[pid 18902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18903
./strace-static-x86_64: Process 18903 attached
[pid 18903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18903] setpgid(0, 0)               = 0
[pid 18903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18903] write(3, "1000", 4)         = 4
[pid 18903] close(3)                    = 0
[pid 18903] memfd_create("syzkaller", 0) = 3
[pid 18903] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18903] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18903] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18903] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18903] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18903] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18903] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18903] close(4)                    = 0
[pid 18903] close(3)                    = 0
[pid 18903] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18903] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18903] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18903] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18903] open("./bus", O_RDONLY)     = 3
[pid 18903] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18903] exit_group(0)               = ?
[pid 18903] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18903, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18904 attached
 <unfinished ...>
[pid 18904] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 18904
[pid 18904] <... prctl resumed>)        = 0
[pid 18904] setpgid(0, 0)               = 0
[pid 18904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18904] write(3, "1000", 4)         = 4
[pid 18904] close(3)                    = 0
[pid 18904] memfd_create("syzkaller", 0) = 3
[pid 18904] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18904] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18904] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18904] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18904] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18904] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18904] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18904] close(4)                    = 0
[pid 18904] close(3)                    = 0
[pid 18904] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18904] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18904] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18904] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18904] open("./bus", O_RDONLY)     = 3
[pid 18904] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18904] exit_group(0)               = ?
[pid 18904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18905
./strace-static-x86_64: Process 18905 attached
[pid 18905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18905] setpgid(0, 0)               = 0
[pid 18905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18905] write(3, "1000", 4)         = 4
[pid 18905] close(3)                    = 0
[pid 18905] memfd_create("syzkaller", 0) = 3
[pid 18905] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18905] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18905] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18905] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18905] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18905] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18905] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18905] close(4)                    = 0
[pid 18905] close(3)                    = 0
[pid 18905] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18905] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18905] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18905] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18905] open("./bus", O_RDONLY)     = 3
[pid 18905] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18905] exit_group(0)               = ?
[pid 18905] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18905, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18906
./strace-static-x86_64: Process 18906 attached
[pid 18906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18906] setpgid(0, 0)               = 0
[pid 18906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18906] write(3, "1000", 4)         = 4
[pid 18906] close(3)                    = 0
[pid 18906] memfd_create("syzkaller", 0) = 3
[pid 18906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18906] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18906] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18906] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18906] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18906] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18906] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18906] close(4)                    = 0
[pid 18906] close(3)                    = 0
[pid 18906] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18906] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18906] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18906] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18906] open("./bus", O_RDONLY)     = 3
[pid 18906] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18906] exit_group(0)               = ?
[pid 18906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18907
./strace-static-x86_64: Process 18907 attached
[pid 18907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18907] setpgid(0, 0)               = 0
[pid 18907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18907] write(3, "1000", 4)         = 4
[pid 18907] close(3)                    = 0
[pid 18907] memfd_create("syzkaller", 0) = 3
[pid 18907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18907] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18907] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18907] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18907] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18907] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18907] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18907] close(4)                    = 0
[pid 18907] close(3)                    = 0
[pid 18907] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18907] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18907] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18907] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18907] open("./bus", O_RDONLY)     = 3
[pid 18907] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18907] exit_group(0)               = ?
[pid 18907] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18907, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18908
./strace-static-x86_64: Process 18908 attached
[pid 18908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18908] setpgid(0, 0)               = 0
[pid 18908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18908] write(3, "1000", 4)         = 4
[pid 18908] close(3)                    = 0
[pid 18908] memfd_create("syzkaller", 0) = 3
[pid 18908] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18908] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18908] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18908] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18908] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18908] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18908] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18908] close(4)                    = 0
[pid 18908] close(3)                    = 0
[pid 18908] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18908] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18908] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18908] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18908] open("./bus", O_RDONLY)     = 3
[pid 18908] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18908] exit_group(0)               = ?
[pid 18908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18908, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18909 attached
, child_tidptr=0x55555606b5d0) = 18909
[pid 18909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18909] setpgid(0, 0)               = 0
[pid 18909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18909] write(3, "1000", 4)         = 4
[pid 18909] close(3)                    = 0
[pid 18909] memfd_create("syzkaller", 0) = 3
[pid 18909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18909] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18909] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18909] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18909] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18909] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18909] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18909] close(4)                    = 0
[pid 18909] close(3)                    = 0
[pid 18909] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18909] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18909] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18909] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18909] open("./bus", O_RDONLY)     = 3
[pid 18909] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18909] exit_group(0)               = ?
[pid 18909] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18909, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18910 attached
, child_tidptr=0x55555606b5d0) = 18910
[pid 18910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18910] setpgid(0, 0)               = 0
[pid 18910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18910] write(3, "1000", 4)         = 4
[pid 18910] close(3)                    = 0
[pid 18910] memfd_create("syzkaller", 0) = 3
[pid 18910] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18910] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18910] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18910] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18910] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18910] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18910] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18910] close(4)                    = 0
[pid 18910] close(3)                    = 0
[pid 18910] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18910] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18910] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18910] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18910] open("./bus", O_RDONLY)     = 3
[pid 18910] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18910] exit_group(0)               = ?
[pid 18910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18911
./strace-static-x86_64: Process 18911 attached
[pid 18911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18911] setpgid(0, 0)               = 0
[pid 18911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18911] write(3, "1000", 4)         = 4
[pid 18911] close(3)                    = 0
[pid 18911] memfd_create("syzkaller", 0) = 3
[pid 18911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18911] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18911] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18911] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18911] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18911] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18911] close(4)                    = 0
[pid 18911] close(3)                    = 0
[pid 18911] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18911] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18911] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18911] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18911] open("./bus", O_RDONLY)     = 3
[pid 18911] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18911] exit_group(0)               = ?
[pid 18911] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18911, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18912
./strace-static-x86_64: Process 18912 attached
[pid 18912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18912] setpgid(0, 0)               = 0
[pid 18912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18912] write(3, "1000", 4)         = 4
[pid 18912] close(3)                    = 0
[pid 18912] memfd_create("syzkaller", 0) = 3
[pid 18912] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18912] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18912] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18912] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18912] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18912] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18912] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18912] close(4)                    = 0
[pid 18912] close(3)                    = 0
[pid 18912] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18912] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18912] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18912] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18912] open("./bus", O_RDONLY)     = 3
[pid 18912] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18912] exit_group(0)               = ?
[pid 18912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18913
./strace-static-x86_64: Process 18913 attached
[pid 18913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18913] setpgid(0, 0)               = 0
[pid 18913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18913] write(3, "1000", 4)         = 4
[pid 18913] close(3)                    = 0
[pid 18913] memfd_create("syzkaller", 0) = 3
[pid 18913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18913] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18913] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18913] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18913] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18913] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18913] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18913] close(4)                    = 0
[pid 18913] close(3)                    = 0
[pid 18913] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18913] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18913] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18913] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18913] open("./bus", O_RDONLY)     = 3
[pid 18913] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18913] exit_group(0)               = ?
[pid 18913] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18913, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18914 attached
, child_tidptr=0x55555606b5d0) = 18914
[pid 18914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18914] setpgid(0, 0)               = 0
[pid 18914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18914] write(3, "1000", 4)         = 4
[pid 18914] close(3)                    = 0
[pid 18914] memfd_create("syzkaller", 0) = 3
[pid 18914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18914] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18914] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18914] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18914] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18914] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18914] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18914] close(4)                    = 0
[pid 18914] close(3)                    = 0
[pid 18914] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18914] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18914] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18914] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18914] open("./bus", O_RDONLY)     = 3
[pid 18914] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18914] exit_group(0)               = ?
[pid 18914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18915 attached
, child_tidptr=0x55555606b5d0) = 18915
[pid 18915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18915] setpgid(0, 0)               = 0
[pid 18915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18915] write(3, "1000", 4)         = 4
[pid 18915] close(3)                    = 0
[pid 18915] memfd_create("syzkaller", 0) = 3
[pid 18915] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18915] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18915] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18915] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18915] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18915] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18915] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18915] close(4)                    = 0
[pid 18915] close(3)                    = 0
[pid 18915] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18915] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18915] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18915] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18915] open("./bus", O_RDONLY)     = 3
[pid 18915] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18915] exit_group(0)               = ?
[pid 18915] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18915, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18916 attached
, child_tidptr=0x55555606b5d0) = 18916
[pid 18916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18916] setpgid(0, 0)               = 0
[pid 18916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18916] write(3, "1000", 4)         = 4
[pid 18916] close(3)                    = 0
[pid 18916] memfd_create("syzkaller", 0) = 3
[pid 18916] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18916] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18916] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18916] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18916] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18916] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18916] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18916] close(4)                    = 0
[pid 18916] close(3)                    = 0
[pid 18916] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18916] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18916] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18916] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18916] open("./bus", O_RDONLY)     = 3
[pid 18916] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18916] exit_group(0)               = ?
[pid 18916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18917
./strace-static-x86_64: Process 18917 attached
[pid 18917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18917] setpgid(0, 0)               = 0
[pid 18917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18917] write(3, "1000", 4)         = 4
[pid 18917] close(3)                    = 0
[pid 18917] memfd_create("syzkaller", 0) = 3
[pid 18917] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18917] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18917] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18917] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18917] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18917] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18917] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18917] close(4)                    = 0
[pid 18917] close(3)                    = 0
[pid 18917] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18917] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18917] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18917] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18917] open("./bus", O_RDONLY)     = 3
[pid 18917] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18917] exit_group(0)               = ?
[pid 18917] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18917, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18918 attached
, child_tidptr=0x55555606b5d0) = 18918
[pid 18918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18918] setpgid(0, 0)               = 0
[pid 18918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18918] write(3, "1000", 4)         = 4
[pid 18918] close(3)                    = 0
[pid 18918] memfd_create("syzkaller", 0) = 3
[pid 18918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18918] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18918] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18918] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18918] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18918] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18918] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18918] close(4)                    = 0
[pid 18918] close(3)                    = 0
[pid 18918] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18918] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18918] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18918] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18918] open("./bus", O_RDONLY)     = 3
[pid 18918] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18918] exit_group(0)               = ?
[pid 18918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18919 attached
, child_tidptr=0x55555606b5d0) = 18919
[pid 18919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18919] setpgid(0, 0)               = 0
[pid 18919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18919] write(3, "1000", 4)         = 4
[pid 18919] close(3)                    = 0
[pid 18919] memfd_create("syzkaller", 0) = 3
[pid 18919] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18919] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18919] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18919] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18919] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18919] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18919] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18919] close(4)                    = 0
[pid 18919] close(3)                    = 0
[pid 18919] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18919] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18919] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18919] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18919] open("./bus", O_RDONLY)     = 3
[pid 18919] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18919] exit_group(0)               = ?
[pid 18919] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18919, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18920
./strace-static-x86_64: Process 18920 attached
[pid 18920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18920] setpgid(0, 0)               = 0
[pid 18920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18920] write(3, "1000", 4)         = 4
[pid 18920] close(3)                    = 0
[pid 18920] memfd_create("syzkaller", 0) = 3
[pid 18920] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18920] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18920] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18920] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18920] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18920] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18920] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18920] close(4)                    = 0
[pid 18920] close(3)                    = 0
[pid 18920] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18920] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18920] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18920] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18920] open("./bus", O_RDONLY)     = 3
[pid 18920] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18920] exit_group(0)               = ?
[pid 18920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18921 attached
, child_tidptr=0x55555606b5d0) = 18921
[pid 18921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18921] setpgid(0, 0)               = 0
[pid 18921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18921] write(3, "1000", 4)         = 4
[pid 18921] close(3)                    = 0
[pid 18921] memfd_create("syzkaller", 0) = 3
[pid 18921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18921] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18921] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18921] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18921] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18921] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18921] close(4)                    = 0
[pid 18921] close(3)                    = 0
[pid 18921] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18921] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18921] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18921] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18921] open("./bus", O_RDONLY)     = 3
[pid 18921] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18921] exit_group(0)               = ?
[pid 18921] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18921, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18922
./strace-static-x86_64: Process 18922 attached
[pid 18922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18922] setpgid(0, 0)               = 0
[pid 18922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18922] write(3, "1000", 4)         = 4
[pid 18922] close(3)                    = 0
[pid 18922] memfd_create("syzkaller", 0) = 3
[pid 18922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18922] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18922] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18922] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18922] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18922] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18922] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18922] close(4)                    = 0
[pid 18922] close(3)                    = 0
[pid 18922] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18922] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18922] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18922] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18922] open("./bus", O_RDONLY)     = 3
[pid 18922] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18922] exit_group(0)               = ?
[pid 18922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18923
./strace-static-x86_64: Process 18923 attached
[pid 18923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18923] setpgid(0, 0)               = 0
[pid 18923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18923] write(3, "1000", 4)         = 4
[pid 18923] close(3)                    = 0
[pid 18923] memfd_create("syzkaller", 0) = 3
[pid 18923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18923] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18923] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18923] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18923] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18923] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18923] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18923] close(4)                    = 0
[pid 18923] close(3)                    = 0
[pid 18923] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18923] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18923] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18923] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18923] open("./bus", O_RDONLY)     = 3
[pid 18923] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18923] exit_group(0)               = ?
[pid 18923] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18923, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18924
./strace-static-x86_64: Process 18924 attached
[pid 18924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18924] setpgid(0, 0)               = 0
[pid 18924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18924] write(3, "1000", 4)         = 4
[pid 18924] close(3)                    = 0
[pid 18924] memfd_create("syzkaller", 0) = 3
[pid 18924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18924] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18924] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18924] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18924] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18924] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18924] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18924] close(4)                    = 0
[pid 18924] close(3)                    = 0
[pid 18924] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18924] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18924] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18924] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18924] open("./bus", O_RDONLY)     = 3
[pid 18924] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18924] exit_group(0)               = ?
[pid 18924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18925
./strace-static-x86_64: Process 18925 attached
[pid 18925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18925] setpgid(0, 0)               = 0
[pid 18925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18925] write(3, "1000", 4)         = 4
[pid 18925] close(3)                    = 0
[pid 18925] memfd_create("syzkaller", 0) = 3
[pid 18925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18925] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18925] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18925] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18925] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18925] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18925] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18925] close(4)                    = 0
[pid 18925] close(3)                    = 0
[pid 18925] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18925] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18925] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18925] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18925] open("./bus", O_RDONLY)     = 3
[pid 18925] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18925] exit_group(0)               = ?
[pid 18925] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18925, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18926 attached
, child_tidptr=0x55555606b5d0) = 18926
[pid 18926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18926] setpgid(0, 0)               = 0
[pid 18926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18926] write(3, "1000", 4)         = 4
[pid 18926] close(3)                    = 0
[pid 18926] memfd_create("syzkaller", 0) = 3
[pid 18926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18926] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18926] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18926] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18926] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18926] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18926] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18926] close(4)                    = 0
[pid 18926] close(3)                    = 0
[pid 18926] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18926] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18926] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18926] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18926] open("./bus", O_RDONLY)     = 3
[pid 18926] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18926] exit_group(0)               = ?
[pid 18926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18927 attached
, child_tidptr=0x55555606b5d0) = 18927
[pid 18927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18927] setpgid(0, 0)               = 0
[pid 18927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18927] write(3, "1000", 4)         = 4
[pid 18927] close(3)                    = 0
[pid 18927] memfd_create("syzkaller", 0) = 3
[pid 18927] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18927] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18927] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18927] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18927] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18927] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18927] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18927] close(4)                    = 0
[pid 18927] close(3)                    = 0
[pid 18927] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18927] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18927] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18927] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18927] open("./bus", O_RDONLY)     = 3
[pid 18927] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18927] exit_group(0)               = ?
[pid 18927] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18927, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18928
./strace-static-x86_64: Process 18928 attached
[pid 18928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18928] setpgid(0, 0)               = 0
[pid 18928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18928] write(3, "1000", 4)         = 4
[pid 18928] close(3)                    = 0
[pid 18928] memfd_create("syzkaller", 0) = 3
[pid 18928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18928] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18928] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18928] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18928] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18928] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18928] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18928] close(4)                    = 0
[pid 18928] close(3)                    = 0
[pid 18928] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18928] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18928] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18928] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18928] open("./bus", O_RDONLY)     = 3
[pid 18928] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18928] exit_group(0)               = ?
[pid 18928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18928, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18929 attached
, child_tidptr=0x55555606b5d0) = 18929
[pid 18929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18929] setpgid(0, 0)               = 0
[pid 18929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18929] write(3, "1000", 4)         = 4
[pid 18929] close(3)                    = 0
[pid 18929] memfd_create("syzkaller", 0) = 3
[pid 18929] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18929] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18929] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18929] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18929] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18929] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18929] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18929] close(4)                    = 0
[pid 18929] close(3)                    = 0
[pid 18929] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18929] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18929] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18929] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18929] open("./bus", O_RDONLY)     = 3
[pid 18929] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18929] exit_group(0)               = ?
[pid 18929] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18929, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18930 attached
, child_tidptr=0x55555606b5d0) = 18930
[pid 18930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18930] setpgid(0, 0)               = 0
[pid 18930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18930] write(3, "1000", 4)         = 4
[pid 18930] close(3)                    = 0
[pid 18930] memfd_create("syzkaller", 0) = 3
[pid 18930] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18930] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18930] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18930] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18930] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18930] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18930] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18930] close(4)                    = 0
[pid 18930] close(3)                    = 0
[pid 18930] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18930] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18930] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18930] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18930] open("./bus", O_RDONLY)     = 3
[pid 18930] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18930] exit_group(0)               = ?
[pid 18930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18931
./strace-static-x86_64: Process 18931 attached
[pid 18931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18931] setpgid(0, 0)               = 0
[pid 18931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18931] write(3, "1000", 4)         = 4
[pid 18931] close(3)                    = 0
[pid 18931] memfd_create("syzkaller", 0) = 3
[pid 18931] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18931] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18931] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18931] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18931] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18931] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18931] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18931] close(4)                    = 0
[pid 18931] close(3)                    = 0
[pid 18931] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18931] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18931] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18931] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18931] open("./bus", O_RDONLY)     = 3
[pid 18931] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18931] exit_group(0)               = ?
[pid 18931] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18931, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18932
./strace-static-x86_64: Process 18932 attached
[pid 18932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18932] setpgid(0, 0)               = 0
[pid 18932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18932] write(3, "1000", 4)         = 4
[pid 18932] close(3)                    = 0
[pid 18932] memfd_create("syzkaller", 0) = 3
[pid 18932] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18932] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18932] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18932] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18932] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18932] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18932] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18932] close(4)                    = 0
[pid 18932] close(3)                    = 0
[pid 18932] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18932] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18932] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18932] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18932] open("./bus", O_RDONLY)     = 3
[pid 18932] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18932] exit_group(0)               = ?
[pid 18932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18933 attached
, child_tidptr=0x55555606b5d0) = 18933
[pid 18933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18933] setpgid(0, 0)               = 0
[pid 18933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18933] write(3, "1000", 4)         = 4
[pid 18933] close(3)                    = 0
[pid 18933] memfd_create("syzkaller", 0) = 3
[pid 18933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18933] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18933] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18933] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18933] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18933] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18933] close(4)                    = 0
[pid 18933] close(3)                    = 0
[pid 18933] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18933] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18933] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18933] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18933] open("./bus", O_RDONLY)     = 3
[pid 18933] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18933] exit_group(0)               = ?
[pid 18933] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18933, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18934
./strace-static-x86_64: Process 18934 attached
[pid 18934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18934] setpgid(0, 0)               = 0
[pid 18934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18934] write(3, "1000", 4)         = 4
[pid 18934] close(3)                    = 0
[pid 18934] memfd_create("syzkaller", 0) = 3
[pid 18934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18934] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18934] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18934] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18934] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18934] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18934] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18934] close(4)                    = 0
[pid 18934] close(3)                    = 0
[pid 18934] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18934] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18934] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18934] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18934] open("./bus", O_RDONLY)     = 3
[pid 18934] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18934] exit_group(0)               = ?
[pid 18934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18935
./strace-static-x86_64: Process 18935 attached
[pid 18935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18935] setpgid(0, 0)               = 0
[pid 18935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18935] write(3, "1000", 4)         = 4
[pid 18935] close(3)                    = 0
[pid 18935] memfd_create("syzkaller", 0) = 3
[pid 18935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18935] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18935] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18935] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18935] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18935] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18935] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18935] close(4)                    = 0
[pid 18935] close(3)                    = 0
[pid 18935] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18935] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18935] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18935] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18935] open("./bus", O_RDONLY)     = 3
[pid 18935] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18935] exit_group(0)               = ?
[pid 18935] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18935, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18936
./strace-static-x86_64: Process 18936 attached
[pid 18936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18936] setpgid(0, 0)               = 0
[pid 18936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18936] write(3, "1000", 4)         = 4
[pid 18936] close(3)                    = 0
[pid 18936] memfd_create("syzkaller", 0) = 3
[pid 18936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18936] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18936] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18936] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18936] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18936] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18936] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18936] close(4)                    = 0
[pid 18936] close(3)                    = 0
[pid 18936] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18936] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18936] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18936] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18936] open("./bus", O_RDONLY)     = 3
[pid 18936] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18936] exit_group(0)               = ?
[pid 18936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18937
./strace-static-x86_64: Process 18937 attached
[pid 18937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18937] setpgid(0, 0)               = 0
[pid 18937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18937] write(3, "1000", 4)         = 4
[pid 18937] close(3)                    = 0
[pid 18937] memfd_create("syzkaller", 0) = 3
[pid 18937] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18937] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18937] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18937] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18937] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18937] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18937] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18937] close(4)                    = 0
[pid 18937] close(3)                    = 0
[pid 18937] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18937] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18937] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18937] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18937] open("./bus", O_RDONLY)     = 3
[pid 18937] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18937] exit_group(0)               = ?
[pid 18937] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18937, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18938
./strace-static-x86_64: Process 18938 attached
[pid 18938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18938] setpgid(0, 0)               = 0
[pid 18938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18938] write(3, "1000", 4)         = 4
[pid 18938] close(3)                    = 0
[pid 18938] memfd_create("syzkaller", 0) = 3
[pid 18938] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18938] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18938] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18938] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18938] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18938] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18938] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18938] close(4)                    = 0
[pid 18938] close(3)                    = 0
[pid 18938] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18938] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18938] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18938] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18938] open("./bus", O_RDONLY)     = 3
[pid 18938] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18938] exit_group(0)               = ?
[pid 18938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18939 attached
, child_tidptr=0x55555606b5d0) = 18939
[pid 18939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18939] setpgid(0, 0)               = 0
[pid 18939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18939] write(3, "1000", 4)         = 4
[pid 18939] close(3)                    = 0
[pid 18939] memfd_create("syzkaller", 0) = 3
[pid 18939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18939] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18939] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18939] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18939] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18939] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18939] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18939] close(4)                    = 0
[pid 18939] close(3)                    = 0
[pid 18939] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18939] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18939] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18939] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18939] open("./bus", O_RDONLY)     = 3
[pid 18939] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18939] exit_group(0)               = ?
[pid 18939] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18939, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18940 attached
, child_tidptr=0x55555606b5d0) = 18940
[pid 18940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18940] setpgid(0, 0)               = 0
[pid 18940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18940] write(3, "1000", 4)         = 4
[pid 18940] close(3)                    = 0
[pid 18940] memfd_create("syzkaller", 0) = 3
[pid 18940] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18940] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18940] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18940] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18940] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18940] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18940] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18940] close(4)                    = 0
[pid 18940] close(3)                    = 0
[pid 18940] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18940] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18940] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18940] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18940] open("./bus", O_RDONLY)     = 3
[pid 18940] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18940] exit_group(0)               = ?
[pid 18940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18941
./strace-static-x86_64: Process 18941 attached
[pid 18941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18941] setpgid(0, 0)               = 0
[pid 18941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18941] write(3, "1000", 4)         = 4
[pid 18941] close(3)                    = 0
[pid 18941] memfd_create("syzkaller", 0) = 3
[pid 18941] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18941] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18941] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18941] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18941] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18941] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18941] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18941] close(4)                    = 0
[pid 18941] close(3)                    = 0
[pid 18941] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18941] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18941] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18941] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18941] open("./bus", O_RDONLY)     = 3
[pid 18941] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18941] exit_group(0)               = ?
[pid 18941] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18941, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18942 attached
, child_tidptr=0x55555606b5d0) = 18942
[pid 18942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18942] setpgid(0, 0)               = 0
[pid 18942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18942] write(3, "1000", 4)         = 4
[pid 18942] close(3)                    = 0
[pid 18942] memfd_create("syzkaller", 0) = 3
[pid 18942] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18942] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18942] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18942] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18942] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18942] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18942] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18942] close(4)                    = 0
[pid 18942] close(3)                    = 0
[pid 18942] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18942] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18942] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18942] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18942] open("./bus", O_RDONLY)     = 3
[pid 18942] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18942] exit_group(0)               = ?
[pid 18942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18943
./strace-static-x86_64: Process 18943 attached
[pid 18943] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18943] setpgid(0, 0)               = 0
[pid 18943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18943] write(3, "1000", 4)         = 4
[pid 18943] close(3)                    = 0
[pid 18943] memfd_create("syzkaller", 0) = 3
[pid 18943] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18943] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18943] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18943] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18943] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18943] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18943] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18943] close(4)                    = 0
[pid 18943] close(3)                    = 0
[pid 18943] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18943] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18943] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18943] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18943] open("./bus", O_RDONLY)     = 3
[pid 18943] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18943] exit_group(0)               = ?
[pid 18943] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18943, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18944
./strace-static-x86_64: Process 18944 attached
[pid 18944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18944] setpgid(0, 0)               = 0
[pid 18944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18944] write(3, "1000", 4)         = 4
[pid 18944] close(3)                    = 0
[pid 18944] memfd_create("syzkaller", 0) = 3
[pid 18944] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18944] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18944] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18944] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18944] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18944] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18944] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18944] close(4)                    = 0
[pid 18944] close(3)                    = 0
[pid 18944] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18944] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18944] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18944] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18944] open("./bus", O_RDONLY)     = 3
[pid 18944] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18944] exit_group(0)               = ?
[pid 18944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18945
./strace-static-x86_64: Process 18945 attached
[pid 18945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18945] setpgid(0, 0)               = 0
[pid 18945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18945] write(3, "1000", 4)         = 4
[pid 18945] close(3)                    = 0
[pid 18945] memfd_create("syzkaller", 0) = 3
[pid 18945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18945] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18945] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18945] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18945] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18945] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18945] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18945] close(4)                    = 0
[pid 18945] close(3)                    = 0
[pid 18945] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18945] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18945] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18945] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18945] open("./bus", O_RDONLY)     = 3
[pid 18945] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18945] exit_group(0)               = ?
[pid 18945] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18945, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18946
./strace-static-x86_64: Process 18946 attached
[pid 18946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18946] setpgid(0, 0)               = 0
[pid 18946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18946] write(3, "1000", 4)         = 4
[pid 18946] close(3)                    = 0
[pid 18946] memfd_create("syzkaller", 0) = 3
[pid 18946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18946] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18946] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18946] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18946] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18946] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18946] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18946] close(4)                    = 0
[pid 18946] close(3)                    = 0
[pid 18946] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18946] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18946] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18946] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18946] open("./bus", O_RDONLY)     = 3
[pid 18946] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18946] exit_group(0)               = ?
[pid 18946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18947
./strace-static-x86_64: Process 18947 attached
[pid 18947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18947] setpgid(0, 0)               = 0
[pid 18947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18947] write(3, "1000", 4)         = 4
[pid 18947] close(3)                    = 0
[pid 18947] memfd_create("syzkaller", 0) = 3
[pid 18947] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18947] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18947] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18947] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18947] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18947] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18947] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18947] close(4)                    = 0
[pid 18947] close(3)                    = 0
[pid 18947] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18947] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18947] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18947] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18947] open("./bus", O_RDONLY)     = 3
[pid 18947] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18947] exit_group(0)               = ?
[pid 18947] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18947, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18948 attached
, child_tidptr=0x55555606b5d0) = 18948
[pid 18948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18948] setpgid(0, 0)               = 0
[pid 18948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18948] write(3, "1000", 4)         = 4
[pid 18948] close(3)                    = 0
[pid 18948] memfd_create("syzkaller", 0) = 3
[pid 18948] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18948] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18948] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18948] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18948] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18948] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18948] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18948] close(4)                    = 0
[pid 18948] close(3)                    = 0
[pid 18948] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18948] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18948] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18948] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18948] open("./bus", O_RDONLY)     = 3
[pid 18948] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18948] exit_group(0)               = ?
[pid 18948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18949 attached
, child_tidptr=0x55555606b5d0) = 18949
[pid 18949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18949] setpgid(0, 0)               = 0
[pid 18949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18949] write(3, "1000", 4)         = 4
[pid 18949] close(3)                    = 0
[pid 18949] memfd_create("syzkaller", 0) = 3
[pid 18949] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18949] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18949] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18949] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18949] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18949] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18949] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18949] close(4)                    = 0
[pid 18949] close(3)                    = 0
[pid 18949] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18949] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18949] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18949] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18949] open("./bus", O_RDONLY)     = 3
[pid 18949] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18949] exit_group(0)               = ?
[pid 18949] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18949, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18950
./strace-static-x86_64: Process 18950 attached
[pid 18950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18950] setpgid(0, 0)               = 0
[pid 18950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18950] write(3, "1000", 4)         = 4
[pid 18950] close(3)                    = 0
[pid 18950] memfd_create("syzkaller", 0) = 3
[pid 18950] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18950] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18950] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18950] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18950] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18950] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18950] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18950] close(4)                    = 0
[pid 18950] close(3)                    = 0
[pid 18950] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18950] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18950] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18950] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18950] open("./bus", O_RDONLY)     = 3
[pid 18950] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18950] exit_group(0)               = ?
[pid 18950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18951
./strace-static-x86_64: Process 18951 attached
[pid 18951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18951] setpgid(0, 0)               = 0
[pid 18951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18951] write(3, "1000", 4)         = 4
[pid 18951] close(3)                    = 0
[pid 18951] memfd_create("syzkaller", 0) = 3
[pid 18951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18951] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18951] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18951] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18951] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18951] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18951] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18951] close(4)                    = 0
[pid 18951] close(3)                    = 0
[pid 18951] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18951] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18951] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18951] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18951] open("./bus", O_RDONLY)     = 3
[pid 18951] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18951] exit_group(0)               = ?
[pid 18951] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18951, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18952
./strace-static-x86_64: Process 18952 attached
[pid 18952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18952] setpgid(0, 0)               = 0
[pid 18952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18952] write(3, "1000", 4)         = 4
[pid 18952] close(3)                    = 0
[pid 18952] memfd_create("syzkaller", 0) = 3
[pid 18952] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18952] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18952] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18952] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18952] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18952] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18952] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18952] close(4)                    = 0
[pid 18952] close(3)                    = 0
[pid 18952] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18952] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18952] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18952] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18952] open("./bus", O_RDONLY)     = 3
[pid 18952] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18952] exit_group(0)               = ?
[pid 18952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18953
./strace-static-x86_64: Process 18953 attached
[pid 18953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18953] setpgid(0, 0)               = 0
[pid 18953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18953] write(3, "1000", 4)         = 4
[pid 18953] close(3)                    = 0
[pid 18953] memfd_create("syzkaller", 0) = 3
[pid 18953] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18953] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18953] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18953] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18953] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18953] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18953] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18953] close(4)                    = 0
[pid 18953] close(3)                    = 0
[pid 18953] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18953] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18953] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18953] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18953] open("./bus", O_RDONLY)     = 3
[pid 18953] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18953] exit_group(0)               = ?
[pid 18953] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18953, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18954 attached
, child_tidptr=0x55555606b5d0) = 18954
[pid 18954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18954] setpgid(0, 0)               = 0
[pid 18954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18954] write(3, "1000", 4)         = 4
[pid 18954] close(3)                    = 0
[pid 18954] memfd_create("syzkaller", 0) = 3
[pid 18954] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18954] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18954] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18954] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18954] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18954] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18954] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18954] close(4)                    = 0
[pid 18954] close(3)                    = 0
[pid 18954] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18954] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18954] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18954] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18954] open("./bus", O_RDONLY)     = 3
[pid 18954] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18954] exit_group(0)               = ?
[pid 18954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18955 attached
, child_tidptr=0x55555606b5d0) = 18955
[pid 18955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18955] setpgid(0, 0)               = 0
[pid 18955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18955] write(3, "1000", 4)         = 4
[pid 18955] close(3)                    = 0
[pid 18955] memfd_create("syzkaller", 0) = 3
[pid 18955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18955] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18955] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18955] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18955] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18955] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18955] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18955] close(4)                    = 0
[pid 18955] close(3)                    = 0
[pid 18955] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18955] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18955] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18955] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18955] open("./bus", O_RDONLY)     = 3
[pid 18955] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18955] exit_group(0)               = ?
[pid 18955] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18955, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18956
./strace-static-x86_64: Process 18956 attached
[pid 18956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18956] setpgid(0, 0)               = 0
[pid 18956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18956] write(3, "1000", 4)         = 4
[pid 18956] close(3)                    = 0
[pid 18956] memfd_create("syzkaller", 0) = 3
[pid 18956] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18956] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18956] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18956] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18956] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18956] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18956] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18956] close(4)                    = 0
[pid 18956] close(3)                    = 0
[pid 18956] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18956] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18956] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18956] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18956] open("./bus", O_RDONLY)     = 3
[pid 18956] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18956] exit_group(0)               = ?
[pid 18956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18957
./strace-static-x86_64: Process 18957 attached
[pid 18957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18957] setpgid(0, 0)               = 0
[pid 18957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18957] write(3, "1000", 4)         = 4
[pid 18957] close(3)                    = 0
[pid 18957] memfd_create("syzkaller", 0) = 3
[pid 18957] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18957] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18957] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18957] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18957] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18957] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18957] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18957] close(4)                    = 0
[pid 18957] close(3)                    = 0
[pid 18957] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18957] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18957] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18957] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18957] open("./bus", O_RDONLY)     = 3
[pid 18957] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18957] exit_group(0)               = ?
[pid 18957] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18957, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18958
./strace-static-x86_64: Process 18958 attached
[pid 18958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18958] setpgid(0, 0)               = 0
[pid 18958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18958] write(3, "1000", 4)         = 4
[pid 18958] close(3)                    = 0
[pid 18958] memfd_create("syzkaller", 0) = 3
[pid 18958] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18958] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18958] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18958] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18958] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18958] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18958] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18958] close(4)                    = 0
[pid 18958] close(3)                    = 0
[pid 18958] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18958] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18958] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18958] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18958] open("./bus", O_RDONLY)     = 3
[pid 18958] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18958] exit_group(0)               = ?
[pid 18958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18959
./strace-static-x86_64: Process 18959 attached
[pid 18959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18959] setpgid(0, 0)               = 0
[pid 18959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18959] write(3, "1000", 4)         = 4
[pid 18959] close(3)                    = 0
[pid 18959] memfd_create("syzkaller", 0) = 3
[pid 18959] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18959] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18959] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18959] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18959] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18959] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18959] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18959] close(4)                    = 0
[pid 18959] close(3)                    = 0
[pid 18959] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18959] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18959] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18959] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18959] open("./bus", O_RDONLY)     = 3
[pid 18959] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18959] exit_group(0)               = ?
[pid 18959] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18959, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18960 attached
, child_tidptr=0x55555606b5d0) = 18960
[pid 18960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18960] setpgid(0, 0)               = 0
[pid 18960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18960] write(3, "1000", 4)         = 4
[pid 18960] close(3)                    = 0
[pid 18960] memfd_create("syzkaller", 0) = 3
[pid 18960] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18960] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18960] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18960] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18960] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18960] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18960] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18960] close(4)                    = 0
[pid 18960] close(3)                    = 0
[pid 18960] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18960] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18960] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18960] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18960] open("./bus", O_RDONLY)     = 3
[pid 18960] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18960] exit_group(0)               = ?
[pid 18960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18960, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18961 attached
, child_tidptr=0x55555606b5d0) = 18961
[pid 18961] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18961] setpgid(0, 0)               = 0
[pid 18961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18961] write(3, "1000", 4)         = 4
[pid 18961] close(3)                    = 0
[pid 18961] memfd_create("syzkaller", 0) = 3
[pid 18961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18961] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18961] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18961] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18961] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18961] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18961] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18961] close(4)                    = 0
[pid 18961] close(3)                    = 0
[pid 18961] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18961] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18961] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18961] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18961] open("./bus", O_RDONLY)     = 3
[pid 18961] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18961] exit_group(0)               = ?
[pid 18961] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18961, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18962
./strace-static-x86_64: Process 18962 attached
[pid 18962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18962] setpgid(0, 0)               = 0
[pid 18962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18962] write(3, "1000", 4)         = 4
[pid 18962] close(3)                    = 0
[pid 18962] memfd_create("syzkaller", 0) = 3
[pid 18962] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18962] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18962] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18962] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18962] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18962] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18962] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18962] close(4)                    = 0
[pid 18962] close(3)                    = 0
[pid 18962] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18962] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18962] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18962] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18962] open("./bus", O_RDONLY)     = 3
[pid 18962] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18962] exit_group(0)               = ?
[pid 18962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18963 attached
, child_tidptr=0x55555606b5d0) = 18963
[pid 18963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18963] setpgid(0, 0)               = 0
[pid 18963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18963] write(3, "1000", 4)         = 4
[pid 18963] close(3)                    = 0
[pid 18963] memfd_create("syzkaller", 0) = 3
[pid 18963] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18963] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18963] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18963] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18963] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18963] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18963] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18963] close(4)                    = 0
[pid 18963] close(3)                    = 0
[pid 18963] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18963] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18963] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18963] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18963] open("./bus", O_RDONLY)     = 3
[pid 18963] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18963] exit_group(0)               = ?
[pid 18963] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18963, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18964 attached
, child_tidptr=0x55555606b5d0) = 18964
[pid 18964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18964] setpgid(0, 0)               = 0
[pid 18964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18964] write(3, "1000", 4)         = 4
[pid 18964] close(3)                    = 0
[pid 18964] memfd_create("syzkaller", 0) = 3
[pid 18964] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18964] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18964] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18964] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18964] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18964] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18964] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18964] close(4)                    = 0
[pid 18964] close(3)                    = 0
[pid 18964] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18964] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18964] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18964] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18964] open("./bus", O_RDONLY)     = 3
[pid 18964] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18964] exit_group(0)               = ?
[pid 18964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18965
./strace-static-x86_64: Process 18965 attached
[pid 18965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18965] setpgid(0, 0)               = 0
[pid 18965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18965] write(3, "1000", 4)         = 4
[pid 18965] close(3)                    = 0
[pid 18965] memfd_create("syzkaller", 0) = 3
[pid 18965] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18965] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18965] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18965] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18965] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18965] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18965] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18965] close(4)                    = 0
[pid 18965] close(3)                    = 0
[pid 18965] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18965] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18965] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18965] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18965] open("./bus", O_RDONLY)     = 3
[pid 18965] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18965] exit_group(0)               = ?
[pid 18965] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18965, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18966
./strace-static-x86_64: Process 18966 attached
[pid 18966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18966] setpgid(0, 0)               = 0
[pid 18966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18966] write(3, "1000", 4)         = 4
[pid 18966] close(3)                    = 0
[pid 18966] memfd_create("syzkaller", 0) = 3
[pid 18966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18966] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18966] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18966] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18966] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18966] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18966] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18966] close(4)                    = 0
[pid 18966] close(3)                    = 0
[pid 18966] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18966] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18966] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18966] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18966] open("./bus", O_RDONLY)     = 3
[pid 18966] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18966] exit_group(0)               = ?
[pid 18966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18966, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18967 attached
, child_tidptr=0x55555606b5d0) = 18967
[pid 18967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18967] setpgid(0, 0)               = 0
[pid 18967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18967] write(3, "1000", 4)         = 4
[pid 18967] close(3)                    = 0
[pid 18967] memfd_create("syzkaller", 0) = 3
[pid 18967] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18967] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18967] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18967] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18967] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18967] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18967] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18967] close(4)                    = 0
[pid 18967] close(3)                    = 0
[pid 18967] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18967] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18967] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18967] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18967] open("./bus", O_RDONLY)     = 3
[pid 18967] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18967] exit_group(0)               = ?
[pid 18967] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18967, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18968
./strace-static-x86_64: Process 18968 attached
[pid 18968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18968] setpgid(0, 0)               = 0
[pid 18968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18968] write(3, "1000", 4)         = 4
[pid 18968] close(3)                    = 0
[pid 18968] memfd_create("syzkaller", 0) = 3
[pid 18968] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18968] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18968] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18968] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18968] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18968] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18968] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18968] close(4)                    = 0
[pid 18968] close(3)                    = 0
[pid 18968] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18968] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18968] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18968] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18968] open("./bus", O_RDONLY)     = 3
[pid 18968] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18968] exit_group(0)               = ?
[pid 18968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18968, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18969 attached
, child_tidptr=0x55555606b5d0) = 18969
[pid 18969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18969] setpgid(0, 0)               = 0
[pid 18969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18969] write(3, "1000", 4)         = 4
[pid 18969] close(3)                    = 0
[pid 18969] memfd_create("syzkaller", 0) = 3
[pid 18969] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18969] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18969] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18969] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18969] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18969] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18969] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18969] close(4)                    = 0
[pid 18969] close(3)                    = 0
[pid 18969] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18969] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18969] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18969] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18969] open("./bus", O_RDONLY)     = 3
[pid 18969] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18969] exit_group(0)               = ?
[pid 18969] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18969, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18970
./strace-static-x86_64: Process 18970 attached
[pid 18970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18970] setpgid(0, 0)               = 0
[pid 18970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18970] write(3, "1000", 4)         = 4
[pid 18970] close(3)                    = 0
[pid 18970] memfd_create("syzkaller", 0) = 3
[pid 18970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18970] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18970] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18970] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18970] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18970] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18970] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18970] close(4)                    = 0
[pid 18970] close(3)                    = 0
[pid 18970] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18970] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18970] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18970] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18970] open("./bus", O_RDONLY)     = 3
[pid 18970] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18970] exit_group(0)               = ?
[pid 18970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18971 attached
, child_tidptr=0x55555606b5d0) = 18971
[pid 18971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18971] setpgid(0, 0)               = 0
[pid 18971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18971] write(3, "1000", 4)         = 4
[pid 18971] close(3)                    = 0
[pid 18971] memfd_create("syzkaller", 0) = 3
[pid 18971] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18971] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18971] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18971] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18971] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18971] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18971] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18971] close(4)                    = 0
[pid 18971] close(3)                    = 0
[pid 18971] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18971] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18971] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18971] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18971] open("./bus", O_RDONLY)     = 3
[pid 18971] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18971] exit_group(0)               = ?
[pid 18971] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18971, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18972
./strace-static-x86_64: Process 18972 attached
[pid 18972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18972] setpgid(0, 0)               = 0
[pid 18972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18972] write(3, "1000", 4)         = 4
[pid 18972] close(3)                    = 0
[pid 18972] memfd_create("syzkaller", 0) = 3
[pid 18972] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18972] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18972] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18972] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18972] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18972] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18972] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18972] close(4)                    = 0
[pid 18972] close(3)                    = 0
[pid 18972] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18972] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18972] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18972] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18972] open("./bus", O_RDONLY)     = 3
[pid 18972] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18972] exit_group(0)               = ?
[pid 18972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18973 attached
, child_tidptr=0x55555606b5d0) = 18973
[pid 18973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18973] setpgid(0, 0)               = 0
[pid 18973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18973] write(3, "1000", 4)         = 4
[pid 18973] close(3)                    = 0
[pid 18973] memfd_create("syzkaller", 0) = 3
[pid 18973] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18973] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18973] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18973] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18973] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18973] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18973] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18973] close(4)                    = 0
[pid 18973] close(3)                    = 0
[pid 18973] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18973] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18973] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18973] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18973] open("./bus", O_RDONLY)     = 3
[pid 18973] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18973] exit_group(0)               = ?
[pid 18973] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18973, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18974 attached
, child_tidptr=0x55555606b5d0) = 18974
[pid 18974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18974] setpgid(0, 0)               = 0
[pid 18974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18974] write(3, "1000", 4)         = 4
[pid 18974] close(3)                    = 0
[pid 18974] memfd_create("syzkaller", 0) = 3
[pid 18974] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18974] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18974] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18974] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18974] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18974] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18974] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18974] close(4)                    = 0
[pid 18974] close(3)                    = 0
[pid 18974] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18974] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18974] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18974] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18974] open("./bus", O_RDONLY)     = 3
[pid 18974] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18974] exit_group(0)               = ?
[pid 18974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18975 attached
, child_tidptr=0x55555606b5d0) = 18975
[pid 18975] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18975] setpgid(0, 0)               = 0
[pid 18975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18975] write(3, "1000", 4)         = 4
[pid 18975] close(3)                    = 0
[pid 18975] memfd_create("syzkaller", 0) = 3
[pid 18975] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18975] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18975] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18975] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18975] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18975] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18975] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18975] close(4)                    = 0
[pid 18975] close(3)                    = 0
[pid 18975] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18975] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18975] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18975] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18975] open("./bus", O_RDONLY)     = 3
[pid 18975] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18975] exit_group(0)               = ?
[pid 18975] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18975, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18976
./strace-static-x86_64: Process 18976 attached
[pid 18976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18976] setpgid(0, 0)               = 0
[pid 18976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18976] write(3, "1000", 4)         = 4
[pid 18976] close(3)                    = 0
[pid 18976] memfd_create("syzkaller", 0) = 3
[pid 18976] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18976] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18976] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18976] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18976] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18976] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18976] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18976] close(4)                    = 0
[pid 18976] close(3)                    = 0
[pid 18976] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18976] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18976] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18976] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18976] open("./bus", O_RDONLY)     = 3
[pid 18976] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18976] exit_group(0)               = ?
[pid 18976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18977
./strace-static-x86_64: Process 18977 attached
[pid 18977] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18977] setpgid(0, 0)               = 0
[pid 18977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18977] write(3, "1000", 4)         = 4
[pid 18977] close(3)                    = 0
[pid 18977] memfd_create("syzkaller", 0) = 3
[pid 18977] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18977] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18977] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18977] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18977] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18977] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18977] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18977] close(4)                    = 0
[pid 18977] close(3)                    = 0
[pid 18977] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18977] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18977] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18977] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18977] open("./bus", O_RDONLY)     = 3
[pid 18977] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18977] exit_group(0)               = ?
[pid 18977] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18977, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18978 attached
, child_tidptr=0x55555606b5d0) = 18978
[pid 18978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18978] setpgid(0, 0)               = 0
[pid 18978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18978] write(3, "1000", 4)         = 4
[pid 18978] close(3)                    = 0
[pid 18978] memfd_create("syzkaller", 0) = 3
[pid 18978] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18978] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18978] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18978] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18978] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18978] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18978] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18978] close(4)                    = 0
[pid 18978] close(3)                    = 0
[pid 18978] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18978] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18978] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18978] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18978] open("./bus", O_RDONLY)     = 3
[pid 18978] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18978] exit_group(0)               = ?
[pid 18978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18978, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18979
./strace-static-x86_64: Process 18979 attached
[pid 18979] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18979] setpgid(0, 0)               = 0
[pid 18979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18979] write(3, "1000", 4)         = 4
[pid 18979] close(3)                    = 0
[pid 18979] memfd_create("syzkaller", 0) = 3
[pid 18979] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18979] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18979] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18979] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18979] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18979] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18979] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18979] close(4)                    = 0
[pid 18979] close(3)                    = 0
[pid 18979] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18979] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18979] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18979] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18979] open("./bus", O_RDONLY)     = 3
[pid 18979] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18979] exit_group(0)               = ?
[pid 18979] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18979, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18980 attached
, child_tidptr=0x55555606b5d0) = 18980
[pid 18980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18980] setpgid(0, 0)               = 0
[pid 18980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18980] write(3, "1000", 4)         = 4
[pid 18980] close(3)                    = 0
[pid 18980] memfd_create("syzkaller", 0) = 3
[pid 18980] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18980] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18980] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18980] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18980] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18980] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18980] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18980] close(4)                    = 0
[pid 18980] close(3)                    = 0
[pid 18980] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18980] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18980] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18980] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18980] open("./bus", O_RDONLY)     = 3
[pid 18980] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18980] exit_group(0)               = ?
[pid 18980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18981 attached
, child_tidptr=0x55555606b5d0) = 18981
[pid 18981] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18981] setpgid(0, 0)               = 0
[pid 18981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18981] write(3, "1000", 4)         = 4
[pid 18981] close(3)                    = 0
[pid 18981] memfd_create("syzkaller", 0) = 3
[pid 18981] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18981] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18981] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18981] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18981] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18981] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18981] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18981] close(4)                    = 0
[pid 18981] close(3)                    = 0
[pid 18981] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18981] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18981] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18981] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18981] open("./bus", O_RDONLY)     = 3
[pid 18981] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18981] exit_group(0)               = ?
[pid 18981] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18981, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18982 attached
, child_tidptr=0x55555606b5d0) = 18982
[pid 18982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18982] setpgid(0, 0)               = 0
[pid 18982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18982] write(3, "1000", 4)         = 4
[pid 18982] close(3)                    = 0
[pid 18982] memfd_create("syzkaller", 0) = 3
[pid 18982] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18982] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18982] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18982] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18982] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18982] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18982] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18982] close(4)                    = 0
[pid 18982] close(3)                    = 0
[pid 18982] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18982] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18982] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18982] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18982] open("./bus", O_RDONLY)     = 3
[pid 18982] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18982] exit_group(0)               = ?
[pid 18982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18982, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18983
./strace-static-x86_64: Process 18983 attached
[pid 18983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18983] setpgid(0, 0)               = 0
[pid 18983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18983] write(3, "1000", 4)         = 4
[pid 18983] close(3)                    = 0
[pid 18983] memfd_create("syzkaller", 0) = 3
[pid 18983] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18983] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18983] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18983] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18983] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18983] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18983] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18983] close(4)                    = 0
[pid 18983] close(3)                    = 0
[pid 18983] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18983] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18983] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18983] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18983] open("./bus", O_RDONLY)     = 3
[pid 18983] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18983] exit_group(0)               = ?
[pid 18983] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18983, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18984
./strace-static-x86_64: Process 18984 attached
[pid 18984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18984] setpgid(0, 0)               = 0
[pid 18984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18984] write(3, "1000", 4)         = 4
[pid 18984] close(3)                    = 0
[pid 18984] memfd_create("syzkaller", 0) = 3
[pid 18984] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18984] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18984] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18984] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18984] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18984] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18984] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18984] close(4)                    = 0
[pid 18984] close(3)                    = 0
[pid 18984] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18984] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18984] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18984] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18984] open("./bus", O_RDONLY)     = 3
[pid 18984] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18984] exit_group(0)               = ?
[pid 18984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18985
./strace-static-x86_64: Process 18985 attached
[pid 18985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18985] setpgid(0, 0)               = 0
[pid 18985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18985] write(3, "1000", 4)         = 4
[pid 18985] close(3)                    = 0
[pid 18985] memfd_create("syzkaller", 0) = 3
[pid 18985] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18985] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18985] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18985] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18985] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18985] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18985] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18985] close(4)                    = 0
[pid 18985] close(3)                    = 0
[pid 18985] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18985] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18985] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18985] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18985] open("./bus", O_RDONLY)     = 3
[pid 18985] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18985] exit_group(0)               = ?
[pid 18985] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18985, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18986
./strace-static-x86_64: Process 18986 attached
[pid 18986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18986] setpgid(0, 0)               = 0
[pid 18986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18986] write(3, "1000", 4)         = 4
[pid 18986] close(3)                    = 0
[pid 18986] memfd_create("syzkaller", 0) = 3
[pid 18986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18986] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18986] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18986] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18986] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18986] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18986] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18986] close(4)                    = 0
[pid 18986] close(3)                    = 0
[pid 18986] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18986] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18986] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18986] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18986] open("./bus", O_RDONLY)     = 3
[pid 18986] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18986] exit_group(0)               = ?
[pid 18986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18987 attached
, child_tidptr=0x55555606b5d0) = 18987
[pid 18987] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18987] setpgid(0, 0)               = 0
[pid 18987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18987] write(3, "1000", 4)         = 4
[pid 18987] close(3)                    = 0
[pid 18987] memfd_create("syzkaller", 0) = 3
[pid 18987] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18987] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18987] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18987] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18987] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18987] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18987] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18987] close(4)                    = 0
[pid 18987] close(3)                    = 0
[pid 18987] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18987] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18987] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18987] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18987] open("./bus", O_RDONLY)     = 3
[pid 18987] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18987] exit_group(0)               = ?
[pid 18987] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18987, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18988
./strace-static-x86_64: Process 18988 attached
[pid 18988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18988] setpgid(0, 0)               = 0
[pid 18988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18988] write(3, "1000", 4)         = 4
[pid 18988] close(3)                    = 0
[pid 18988] memfd_create("syzkaller", 0) = 3
[pid 18988] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18988] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18988] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18988] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18988] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18988] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18988] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18988] close(4)                    = 0
[pid 18988] close(3)                    = 0
[pid 18988] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18988] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18988] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18988] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18988] open("./bus", O_RDONLY)     = 3
[pid 18988] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18988] exit_group(0)               = ?
[pid 18988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18989
./strace-static-x86_64: Process 18989 attached
[pid 18989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18989] setpgid(0, 0)               = 0
[pid 18989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18989] write(3, "1000", 4)         = 4
[pid 18989] close(3)                    = 0
[pid 18989] memfd_create("syzkaller", 0) = 3
[pid 18989] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18989] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18989] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18989] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18989] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18989] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18989] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18989] close(4)                    = 0
[pid 18989] close(3)                    = 0
[pid 18989] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18989] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18989] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18989] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18989] open("./bus", O_RDONLY)     = 3
[pid 18989] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18989] exit_group(0)               = ?
[pid 18989] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18989, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18990
./strace-static-x86_64: Process 18990 attached
[pid 18990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18990] setpgid(0, 0)               = 0
[pid 18990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18990] write(3, "1000", 4)         = 4
[pid 18990] close(3)                    = 0
[pid 18990] memfd_create("syzkaller", 0) = 3
[pid 18990] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18990] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18990] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18990] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18990] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18990] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18990] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18990] close(4)                    = 0
[pid 18990] close(3)                    = 0
[pid 18990] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18990] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18990] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18990] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18990] open("./bus", O_RDONLY)     = 3
[pid 18990] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18990] exit_group(0)               = ?
[pid 18990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18991 attached
, child_tidptr=0x55555606b5d0) = 18991
[pid 18991] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18991] setpgid(0, 0)               = 0
[pid 18991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18991] write(3, "1000", 4)         = 4
[pid 18991] close(3)                    = 0
[pid 18991] memfd_create("syzkaller", 0) = 3
[pid 18991] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18991] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18991] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18991] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18991] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18991] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18991] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18991] close(4)                    = 0
[pid 18991] close(3)                    = 0
[pid 18991] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18991] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18991] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18991] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18991] open("./bus", O_RDONLY)     = 3
[pid 18991] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18991] exit_group(0)               = ?
[pid 18991] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18991, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18992
./strace-static-x86_64: Process 18992 attached
[pid 18992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18992] setpgid(0, 0)               = 0
[pid 18992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18992] write(3, "1000", 4)         = 4
[pid 18992] close(3)                    = 0
[pid 18992] memfd_create("syzkaller", 0) = 3
[pid 18992] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18992] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18992] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18992] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18992] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18992] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18992] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18992] close(4)                    = 0
[pid 18992] close(3)                    = 0
[pid 18992] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18992] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18992] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18992] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18992] open("./bus", O_RDONLY)     = 3
[pid 18992] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18992] exit_group(0)               = ?
[pid 18992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18993 attached
, child_tidptr=0x55555606b5d0) = 18993
[pid 18993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18993] setpgid(0, 0)               = 0
[pid 18993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18993] write(3, "1000", 4)         = 4
[pid 18993] close(3)                    = 0
[pid 18993] memfd_create("syzkaller", 0) = 3
[pid 18993] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18993] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18993] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18993] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18993] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18993] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18993] close(4)                    = 0
[pid 18993] close(3)                    = 0
[pid 18993] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18993] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18993] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18993] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18993] open("./bus", O_RDONLY)     = 3
[pid 18993] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18993] exit_group(0)               = ?
[pid 18993] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18993, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 18994
./strace-static-x86_64: Process 18994 attached
[pid 18994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18994] setpgid(0, 0)               = 0
[pid 18994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18994] write(3, "1000", 4)         = 4
[pid 18994] close(3)                    = 0
[pid 18994] memfd_create("syzkaller", 0) = 3
[pid 18994] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18994] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18994] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18994] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18994] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18994] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18994] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18994] close(4)                    = 0
[pid 18994] close(3)                    = 0
[pid 18994] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18994] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18994] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18994] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18994] open("./bus", O_RDONLY)     = 3
[pid 18994] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18994] exit_group(0)               = ?
[pid 18994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18995 attached
, child_tidptr=0x55555606b5d0) = 18995
[pid 18995] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18995] setpgid(0, 0)               = 0
[pid 18995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18995] write(3, "1000", 4)         = 4
[pid 18995] close(3)                    = 0
[pid 18995] memfd_create("syzkaller", 0) = 3
[pid 18995] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18995] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18995] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18995] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18995] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18995] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18995] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18995] close(4)                    = 0
[pid 18995] close(3)                    = 0
[pid 18995] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18995] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18995] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18995] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18995] open("./bus", O_RDONLY)     = 3
[pid 18995] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18995] exit_group(0)               = ?
[pid 18995] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18995, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18996 attached
, child_tidptr=0x55555606b5d0) = 18996
[pid 18996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18996] setpgid(0, 0)               = 0
[pid 18996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18996] write(3, "1000", 4)         = 4
[pid 18996] close(3)                    = 0
[pid 18996] memfd_create("syzkaller", 0) = 3
[pid 18996] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18996] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18996] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18996] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18996] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18996] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18996] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18996] close(4)                    = 0
[pid 18996] close(3)                    = 0
[pid 18996] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18996] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18996] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18996] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18996] open("./bus", O_RDONLY)     = 3
[pid 18996] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18996] exit_group(0)               = ?
[pid 18996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18996, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18997 attached
, child_tidptr=0x55555606b5d0) = 18997
[pid 18997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18997] setpgid(0, 0)               = 0
[pid 18997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18997] write(3, "1000", 4)         = 4
[pid 18997] close(3)                    = 0
[pid 18997] memfd_create("syzkaller", 0) = 3
[pid 18997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18997] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18997] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18997] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18997] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18997] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18997] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18997] close(4)                    = 0
[pid 18997] close(3)                    = 0
[pid 18997] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18997] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18997] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18997] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18997] open("./bus", O_RDONLY)     = 3
[pid 18997] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18997] exit_group(0)               = ?
[pid 18997] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18997, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18998 attached
, child_tidptr=0x55555606b5d0) = 18998
[pid 18998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18998] setpgid(0, 0)               = 0
[pid 18998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18998] write(3, "1000", 4)         = 4
[pid 18998] close(3)                    = 0
[pid 18998] memfd_create("syzkaller", 0) = 3
[pid 18998] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18998] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18998] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18998] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18998] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18998] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18998] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18998] close(4)                    = 0
[pid 18998] close(3)                    = 0
[pid 18998] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18998] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18998] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18998] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18998] open("./bus", O_RDONLY)     = 3
[pid 18998] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18998] exit_group(0)               = ?
[pid 18998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 18999 attached
, child_tidptr=0x55555606b5d0) = 18999
[pid 18999] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 18999] setpgid(0, 0)               = 0
[pid 18999] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 18999] write(3, "1000", 4)         = 4
[pid 18999] close(3)                    = 0
[pid 18999] memfd_create("syzkaller", 0) = 3
[pid 18999] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 18999] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 18999] munmap(0x7f4abd7ae000, 32768) = 0
[pid 18999] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 18999] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18999] ioctl(4, LOOP_CLR_FD)       = 0
[pid 18999] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 18999] close(4)                    = 0
[pid 18999] close(3)                    = 0
[pid 18999] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 18999] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 18999] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 18999] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 18999] open("./bus", O_RDONLY)     = 3
[pid 18999] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 18999] exit_group(0)               = ?
[pid 18999] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18999, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19000
./strace-static-x86_64: Process 19000 attached
[pid 19000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19000] setpgid(0, 0)               = 0
[pid 19000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19000] write(3, "1000", 4)         = 4
[pid 19000] close(3)                    = 0
[pid 19000] memfd_create("syzkaller", 0) = 3
[pid 19000] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19000] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19000] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19000] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19000] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19000] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19000] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19000] close(4)                    = 0
[pid 19000] close(3)                    = 0
[pid 19000] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19000] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19000] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19000] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19000] open("./bus", O_RDONLY)     = 3
[pid 19000] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19000] exit_group(0)               = ?
[pid 19000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19001
./strace-static-x86_64: Process 19001 attached
[pid 19001] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19001] setpgid(0, 0)               = 0
[pid 19001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19001] write(3, "1000", 4)         = 4
[pid 19001] close(3)                    = 0
[pid 19001] memfd_create("syzkaller", 0) = 3
[pid 19001] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19001] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19001] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19001] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19001] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19001] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19001] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19001] close(4)                    = 0
[pid 19001] close(3)                    = 0
[pid 19001] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19001] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19001] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19001] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19001] open("./bus", O_RDONLY)     = 3
[pid 19001] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19001] exit_group(0)               = ?
[pid 19001] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19001, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19002
./strace-static-x86_64: Process 19002 attached
[pid 19002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19002] setpgid(0, 0)               = 0
[pid 19002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19002] write(3, "1000", 4)         = 4
[pid 19002] close(3)                    = 0
[pid 19002] memfd_create("syzkaller", 0) = 3
[pid 19002] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19002] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19002] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19002] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19002] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19002] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19002] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19002] close(4)                    = 0
[pid 19002] close(3)                    = 0
[pid 19002] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19002] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19002] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19002] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19002] open("./bus", O_RDONLY)     = 3
[pid 19002] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19002] exit_group(0)               = ?
[pid 19002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19003
./strace-static-x86_64: Process 19003 attached
[pid 19003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19003] setpgid(0, 0)               = 0
[pid 19003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19003] write(3, "1000", 4)         = 4
[pid 19003] close(3)                    = 0
[pid 19003] memfd_create("syzkaller", 0) = 3
[pid 19003] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19003] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19003] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19003] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19003] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19003] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19003] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19003] close(4)                    = 0
[pid 19003] close(3)                    = 0
[pid 19003] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19003] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19003] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19003] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19003] open("./bus", O_RDONLY)     = 3
[pid 19003] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19003] exit_group(0)               = ?
[pid 19003] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19003, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19004
./strace-static-x86_64: Process 19004 attached
[pid 19004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19004] setpgid(0, 0)               = 0
[pid 19004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19004] write(3, "1000", 4)         = 4
[pid 19004] close(3)                    = 0
[pid 19004] memfd_create("syzkaller", 0) = 3
[pid 19004] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19004] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19004] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19004] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19004] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19004] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19004] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19004] close(4)                    = 0
[pid 19004] close(3)                    = 0
[pid 19004] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19004] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19004] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19004] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19004] open("./bus", O_RDONLY)     = 3
[pid 19004] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19004] exit_group(0)               = ?
[pid 19004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19005
./strace-static-x86_64: Process 19005 attached
[pid 19005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19005] setpgid(0, 0)               = 0
[pid 19005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19005] write(3, "1000", 4)         = 4
[pid 19005] close(3)                    = 0
[pid 19005] memfd_create("syzkaller", 0) = 3
[pid 19005] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19005] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19005] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19005] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19005] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19005] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19005] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19005] close(4)                    = 0
[pid 19005] close(3)                    = 0
[pid 19005] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19005] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19005] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19005] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19005] open("./bus", O_RDONLY)     = 3
[pid 19005] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19005] exit_group(0)               = ?
[pid 19005] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19005, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19006 attached
, child_tidptr=0x55555606b5d0) = 19006
[pid 19006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19006] setpgid(0, 0)               = 0
[pid 19006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19006] write(3, "1000", 4)         = 4
[pid 19006] close(3)                    = 0
[pid 19006] memfd_create("syzkaller", 0) = 3
[pid 19006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19006] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19006] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19006] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19006] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19006] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19006] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19006] close(4)                    = 0
[pid 19006] close(3)                    = 0
[pid 19006] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19006] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19006] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19006] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19006] open("./bus", O_RDONLY)     = 3
[pid 19006] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19006] exit_group(0)               = ?
[pid 19006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19007
./strace-static-x86_64: Process 19007 attached
[pid 19007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19007] setpgid(0, 0)               = 0
[pid 19007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19007] write(3, "1000", 4)         = 4
[pid 19007] close(3)                    = 0
[pid 19007] memfd_create("syzkaller", 0) = 3
[pid 19007] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19007] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19007] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19007] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19007] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19007] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19007] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19007] close(4)                    = 0
[pid 19007] close(3)                    = 0
[pid 19007] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19007] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19007] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19007] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19007] open("./bus", O_RDONLY)     = 3
[pid 19007] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19007] exit_group(0)               = ?
[pid 19007] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19007, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19008 attached
, child_tidptr=0x55555606b5d0) = 19008
[pid 19008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19008] setpgid(0, 0)               = 0
[pid 19008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19008] write(3, "1000", 4)         = 4
[pid 19008] close(3)                    = 0
[pid 19008] memfd_create("syzkaller", 0) = 3
[pid 19008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19008] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19008] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19008] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19008] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19008] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19008] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19008] close(4)                    = 0
[pid 19008] close(3)                    = 0
[pid 19008] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19008] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19008] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19008] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19008] open("./bus", O_RDONLY)     = 3
[pid 19008] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19008] exit_group(0)               = ?
[pid 19008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19009 attached
, child_tidptr=0x55555606b5d0) = 19009
[pid 19009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19009] setpgid(0, 0)               = 0
[pid 19009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19009] write(3, "1000", 4)         = 4
[pid 19009] close(3)                    = 0
[pid 19009] memfd_create("syzkaller", 0) = 3
[pid 19009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19009] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19009] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19009] close(4)                    = 0
[pid 19009] close(3)                    = 0
[pid 19009] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19009] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19009] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19009] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19009] open("./bus", O_RDONLY)     = 3
[pid 19009] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19009] exit_group(0)               = ?
[pid 19009] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19009, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19010 attached
, child_tidptr=0x55555606b5d0) = 19010
[pid 19010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19010] setpgid(0, 0)               = 0
[pid 19010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19010] write(3, "1000", 4)         = 4
[pid 19010] close(3)                    = 0
[pid 19010] memfd_create("syzkaller", 0) = 3
[pid 19010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19010] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19010] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19010] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19010] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19010] close(4)                    = 0
[pid 19010] close(3)                    = 0
[pid 19010] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19010] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19010] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19010] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19010] open("./bus", O_RDONLY)     = 3
[pid 19010] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19010] exit_group(0)               = ?
[pid 19010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19010, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19011
./strace-static-x86_64: Process 19011 attached
[pid 19011] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19011] setpgid(0, 0)               = 0
[pid 19011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19011] write(3, "1000", 4)         = 4
[pid 19011] close(3)                    = 0
[pid 19011] memfd_create("syzkaller", 0) = 3
[pid 19011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19011] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19011] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19011] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19011] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19011] close(4)                    = 0
[pid 19011] close(3)                    = 0
[pid 19011] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19011] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19011] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19011] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19011] open("./bus", O_RDONLY)     = 3
[pid 19011] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19011] exit_group(0)               = ?
[pid 19011] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19011, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19012 attached
, child_tidptr=0x55555606b5d0) = 19012
[pid 19012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19012] setpgid(0, 0)               = 0
[pid 19012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19012] write(3, "1000", 4)         = 4
[pid 19012] close(3)                    = 0
[pid 19012] memfd_create("syzkaller", 0) = 3
[pid 19012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19012] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19012] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19012] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19012] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19012] close(4)                    = 0
[pid 19012] close(3)                    = 0
[pid 19012] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19012] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19012] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19012] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19012] open("./bus", O_RDONLY)     = 3
[pid 19012] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19012] exit_group(0)               = ?
[pid 19012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19013 attached
, child_tidptr=0x55555606b5d0) = 19013
[pid 19013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19013] setpgid(0, 0)               = 0
[pid 19013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19013] write(3, "1000", 4)         = 4
[pid 19013] close(3)                    = 0
[pid 19013] memfd_create("syzkaller", 0) = 3
[pid 19013] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19013] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19013] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19013] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19013] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19013] close(4)                    = 0
[pid 19013] close(3)                    = 0
[pid 19013] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19013] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19013] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19013] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19013] open("./bus", O_RDONLY)     = 3
[pid 19013] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19013] exit_group(0)               = ?
[pid 19013] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19013, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19014
./strace-static-x86_64: Process 19014 attached
[pid 19014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19014] setpgid(0, 0)               = 0
[pid 19014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19014] write(3, "1000", 4)         = 4
[pid 19014] close(3)                    = 0
[pid 19014] memfd_create("syzkaller", 0) = 3
[pid 19014] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19014] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19014] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19014] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19014] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19014] close(4)                    = 0
[pid 19014] close(3)                    = 0
[pid 19014] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19014] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19014] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19014] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19014] open("./bus", O_RDONLY)     = 3
[pid 19014] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19014] exit_group(0)               = ?
[pid 19014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19014, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19015
./strace-static-x86_64: Process 19015 attached
[pid 19015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19015] setpgid(0, 0)               = 0
[pid 19015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19015] write(3, "1000", 4)         = 4
[pid 19015] close(3)                    = 0
[pid 19015] memfd_create("syzkaller", 0) = 3
[pid 19015] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19015] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19015] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19015] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19015] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19015] close(4)                    = 0
[pid 19015] close(3)                    = 0
[pid 19015] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19015] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19015] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19015] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19015] open("./bus", O_RDONLY)     = 3
[pid 19015] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19015] exit_group(0)               = ?
[pid 19015] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19015, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19016 attached
, child_tidptr=0x55555606b5d0) = 19016
[pid 19016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19016] setpgid(0, 0)               = 0
[pid 19016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19016] write(3, "1000", 4)         = 4
[pid 19016] close(3)                    = 0
[pid 19016] memfd_create("syzkaller", 0) = 3
[pid 19016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19016] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19016] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19016] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19016] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19016] close(4)                    = 0
[pid 19016] close(3)                    = 0
[pid 19016] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19016] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19016] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19016] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19016] open("./bus", O_RDONLY)     = 3
[pid 19016] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19016] exit_group(0)               = ?
[pid 19016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19017 attached
 <unfinished ...>
[pid 19017] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19017
[pid 19017] <... prctl resumed>)        = 0
[pid 19017] setpgid(0, 0)               = 0
[pid 19017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19017] write(3, "1000", 4)         = 4
[pid 19017] close(3)                    = 0
[pid 19017] memfd_create("syzkaller", 0) = 3
[pid 19017] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19017] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19017] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19017] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19017] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19017] close(4)                    = 0
[pid 19017] close(3)                    = 0
[pid 19017] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19017] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19017] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19017] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19017] open("./bus", O_RDONLY)     = 3
[pid 19017] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19017] exit_group(0)               = ?
[pid 19017] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19017, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19018 attached
, child_tidptr=0x55555606b5d0) = 19018
[pid 19018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19018] setpgid(0, 0)               = 0
[pid 19018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19018] write(3, "1000", 4)         = 4
[pid 19018] close(3)                    = 0
[pid 19018] memfd_create("syzkaller", 0) = 3
[pid 19018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19018] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19018] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19018] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19018] close(4)                    = 0
[pid 19018] close(3)                    = 0
[pid 19018] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19018] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19018] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19018] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19018] open("./bus", O_RDONLY)     = 3
[pid 19018] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19018] exit_group(0)               = ?
[pid 19018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19018, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19019
./strace-static-x86_64: Process 19019 attached
[pid 19019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19019] setpgid(0, 0)               = 0
[pid 19019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19019] write(3, "1000", 4)         = 4
[pid 19019] close(3)                    = 0
[pid 19019] memfd_create("syzkaller", 0) = 3
[pid 19019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19019] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19019] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19019] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19019] close(4)                    = 0
[pid 19019] close(3)                    = 0
[pid 19019] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19019] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19019] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19019] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19019] open("./bus", O_RDONLY)     = 3
[pid 19019] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19019] exit_group(0)               = ?
[pid 19019] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19019, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19020 attached
, child_tidptr=0x55555606b5d0) = 19020
[pid 19020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19020] setpgid(0, 0)               = 0
[pid 19020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19020] write(3, "1000", 4)         = 4
[pid 19020] close(3)                    = 0
[pid 19020] memfd_create("syzkaller", 0) = 3
[pid 19020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19020] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19020] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19020] close(4)                    = 0
[pid 19020] close(3)                    = 0
[pid 19020] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19020] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19020] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19020] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19020] open("./bus", O_RDONLY)     = 3
[pid 19020] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19020] exit_group(0)               = ?
[pid 19020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19021 attached
, child_tidptr=0x55555606b5d0) = 19021
[pid 19021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19021] setpgid(0, 0)               = 0
[pid 19021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19021] write(3, "1000", 4)         = 4
[pid 19021] close(3)                    = 0
[pid 19021] memfd_create("syzkaller", 0) = 3
[pid 19021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19021] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19021] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19021] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19021] close(4)                    = 0
[pid 19021] close(3)                    = 0
[pid 19021] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19021] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19021] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19021] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19021] open("./bus", O_RDONLY)     = 3
[pid 19021] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19021] exit_group(0)               = ?
[pid 19021] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19021, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19022
./strace-static-x86_64: Process 19022 attached
[pid 19022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19022] setpgid(0, 0)               = 0
[pid 19022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19022] write(3, "1000", 4)         = 4
[pid 19022] close(3)                    = 0
[pid 19022] memfd_create("syzkaller", 0) = 3
[pid 19022] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19022] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19022] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19022] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19022] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19022] close(4)                    = 0
[pid 19022] close(3)                    = 0
[pid 19022] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19022] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19022] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19022] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19022] open("./bus", O_RDONLY)     = 3
[pid 19022] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19022] exit_group(0)               = ?
[pid 19022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19023 attached
, child_tidptr=0x55555606b5d0) = 19023
[pid 19023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19023] setpgid(0, 0)               = 0
[pid 19023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19023] write(3, "1000", 4)         = 4
[pid 19023] close(3)                    = 0
[pid 19023] memfd_create("syzkaller", 0) = 3
[pid 19023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19023] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19023] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19023] close(4)                    = 0
[pid 19023] close(3)                    = 0
[pid 19023] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19023] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19023] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19023] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19023] open("./bus", O_RDONLY)     = 3
[pid 19023] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19023] exit_group(0)               = ?
[pid 19023] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19023, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19024 attached
, child_tidptr=0x55555606b5d0) = 19024
[pid 19024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19024] setpgid(0, 0)               = 0
[pid 19024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19024] write(3, "1000", 4)         = 4
[pid 19024] close(3)                    = 0
[pid 19024] memfd_create("syzkaller", 0) = 3
[pid 19024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19024] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19024] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19024] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19024] close(4)                    = 0
[pid 19024] close(3)                    = 0
[pid 19024] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19024] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19024] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19024] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19024] open("./bus", O_RDONLY)     = 3
[pid 19024] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19024] exit_group(0)               = ?
[pid 19024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19025
./strace-static-x86_64: Process 19025 attached
[pid 19025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19025] setpgid(0, 0)               = 0
[pid 19025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19025] write(3, "1000", 4)         = 4
[pid 19025] close(3)                    = 0
[pid 19025] memfd_create("syzkaller", 0) = 3
[pid 19025] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19025] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19025] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19025] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19025] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19025] close(4)                    = 0
[pid 19025] close(3)                    = 0
[pid 19025] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19025] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19025] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19025] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19025] open("./bus", O_RDONLY)     = 3
[pid 19025] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19025] exit_group(0)               = ?
[pid 19025] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19025, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19026 attached
, child_tidptr=0x55555606b5d0) = 19026
[pid 19026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19026] setpgid(0, 0)               = 0
[pid 19026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19026] write(3, "1000", 4)         = 4
[pid 19026] close(3)                    = 0
[pid 19026] memfd_create("syzkaller", 0) = 3
[pid 19026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19026] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19026] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19026] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19026] close(4)                    = 0
[pid 19026] close(3)                    = 0
[pid 19026] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19026] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19026] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19026] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19026] open("./bus", O_RDONLY)     = 3
[pid 19026] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19026] exit_group(0)               = ?
[pid 19026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19026, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19027
./strace-static-x86_64: Process 19027 attached
[pid 19027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19027] setpgid(0, 0)               = 0
[pid 19027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19027] write(3, "1000", 4)         = 4
[pid 19027] close(3)                    = 0
[pid 19027] memfd_create("syzkaller", 0) = 3
[pid 19027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19027] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19027] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19027] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19027] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19027] close(4)                    = 0
[pid 19027] close(3)                    = 0
[pid 19027] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19027] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19027] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19027] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19027] open("./bus", O_RDONLY)     = 3
[pid 19027] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19027] exit_group(0)               = ?
[pid 19027] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19027, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19028
./strace-static-x86_64: Process 19028 attached
[pid 19028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19028] setpgid(0, 0)               = 0
[pid 19028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19028] write(3, "1000", 4)         = 4
[pid 19028] close(3)                    = 0
[pid 19028] memfd_create("syzkaller", 0) = 3
[pid 19028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19028] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19028] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19028] close(4)                    = 0
[pid 19028] close(3)                    = 0
[pid 19028] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19028] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19028] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19028] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19028] open("./bus", O_RDONLY)     = 3
[pid 19028] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19028] exit_group(0)               = ?
[pid 19028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19029 attached
, child_tidptr=0x55555606b5d0) = 19029
[pid 19029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19029] setpgid(0, 0)               = 0
[pid 19029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19029] write(3, "1000", 4)         = 4
[pid 19029] close(3)                    = 0
[pid 19029] memfd_create("syzkaller", 0) = 3
[pid 19029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19029] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19029] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19029] close(4)                    = 0
[pid 19029] close(3)                    = 0
[pid 19029] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19029] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19029] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19029] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19029] open("./bus", O_RDONLY)     = 3
[pid 19029] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19029] exit_group(0)               = ?
[pid 19029] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19029, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19030
./strace-static-x86_64: Process 19030 attached
[pid 19030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19030] setpgid(0, 0)               = 0
[pid 19030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19030] write(3, "1000", 4)         = 4
[pid 19030] close(3)                    = 0
[pid 19030] memfd_create("syzkaller", 0) = 3
[pid 19030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19030] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19030] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19030] close(4)                    = 0
[pid 19030] close(3)                    = 0
[pid 19030] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19030] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19030] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19030] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19030] open("./bus", O_RDONLY)     = 3
[pid 19030] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19030] exit_group(0)               = ?
[pid 19030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19031
./strace-static-x86_64: Process 19031 attached
[pid 19031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19031] setpgid(0, 0)               = 0
[pid 19031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19031] write(3, "1000", 4)         = 4
[pid 19031] close(3)                    = 0
[pid 19031] memfd_create("syzkaller", 0) = 3
[pid 19031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19031] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19031] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19031] close(4)                    = 0
[pid 19031] close(3)                    = 0
[pid 19031] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19031] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19031] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19031] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19031] open("./bus", O_RDONLY)     = 3
[pid 19031] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19031] exit_group(0)               = ?
[pid 19031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19031, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19032 attached
, child_tidptr=0x55555606b5d0) = 19032
[pid 19032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19032] setpgid(0, 0)               = 0
[pid 19032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19032] write(3, "1000", 4)         = 4
[pid 19032] close(3)                    = 0
[pid 19032] memfd_create("syzkaller", 0) = 3
[pid 19032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19032] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19032] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19032] close(4)                    = 0
[pid 19032] close(3)                    = 0
[pid 19032] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19032] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19032] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19032] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19032] open("./bus", O_RDONLY)     = 3
[pid 19032] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19032] exit_group(0)               = ?
[pid 19032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19033
./strace-static-x86_64: Process 19033 attached
[pid 19033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19033] setpgid(0, 0)               = 0
[pid 19033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19033] write(3, "1000", 4)         = 4
[pid 19033] close(3)                    = 0
[pid 19033] memfd_create("syzkaller", 0) = 3
[pid 19033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19033] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19033] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19033] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19033] close(4)                    = 0
[pid 19033] close(3)                    = 0
[pid 19033] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19033] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19033] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19033] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19033] open("./bus", O_RDONLY)     = 3
[pid 19033] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19033] exit_group(0)               = ?
[pid 19033] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19033, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19034
./strace-static-x86_64: Process 19034 attached
[pid 19034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19034] setpgid(0, 0)               = 0
[pid 19034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19034] write(3, "1000", 4)         = 4
[pid 19034] close(3)                    = 0
[pid 19034] memfd_create("syzkaller", 0) = 3
[pid 19034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19034] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19034] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19034] close(4)                    = 0
[pid 19034] close(3)                    = 0
[pid 19034] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19034] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19034] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19034] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19034] open("./bus", O_RDONLY)     = 3
[pid 19034] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19034] exit_group(0)               = ?
[pid 19034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19035 attached
, child_tidptr=0x55555606b5d0) = 19035
[pid 19035] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19035] setpgid(0, 0)               = 0
[pid 19035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19035] write(3, "1000", 4)         = 4
[pid 19035] close(3)                    = 0
[pid 19035] memfd_create("syzkaller", 0) = 3
[pid 19035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19035] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19035] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19035] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19035] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19035] close(4)                    = 0
[pid 19035] close(3)                    = 0
[pid 19035] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19035] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19035] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19035] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19035] open("./bus", O_RDONLY)     = 3
[pid 19035] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19035] exit_group(0)               = ?
[pid 19035] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19035, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19036
./strace-static-x86_64: Process 19036 attached
[pid 19036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19036] setpgid(0, 0)               = 0
[pid 19036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19036] write(3, "1000", 4)         = 4
[pid 19036] close(3)                    = 0
[pid 19036] memfd_create("syzkaller", 0) = 3
[pid 19036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19036] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19036] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19036] close(4)                    = 0
[pid 19036] close(3)                    = 0
[pid 19036] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19036] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19036] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19036] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19036] open("./bus", O_RDONLY)     = 3
[pid 19036] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19036] exit_group(0)               = ?
[pid 19036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19037 attached
, child_tidptr=0x55555606b5d0) = 19037
[pid 19037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19037] setpgid(0, 0)               = 0
[pid 19037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19037] write(3, "1000", 4)         = 4
[pid 19037] close(3)                    = 0
[pid 19037] memfd_create("syzkaller", 0) = 3
[pid 19037] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19037] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19037] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19037] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19037] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19037] close(4)                    = 0
[pid 19037] close(3)                    = 0
[pid 19037] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19037] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19037] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19037] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19037] open("./bus", O_RDONLY)     = 3
[pid 19037] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19037] exit_group(0)               = ?
[pid 19037] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19037, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19038
./strace-static-x86_64: Process 19038 attached
[pid 19038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19038] setpgid(0, 0)               = 0
[pid 19038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19038] write(3, "1000", 4)         = 4
[pid 19038] close(3)                    = 0
[pid 19038] memfd_create("syzkaller", 0) = 3
[pid 19038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19038] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19038] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19038] close(4)                    = 0
[pid 19038] close(3)                    = 0
[pid 19038] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19038] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19038] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19038] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19038] open("./bus", O_RDONLY)     = 3
[pid 19038] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19038] exit_group(0)               = ?
[pid 19038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19039
./strace-static-x86_64: Process 19039 attached
[pid 19039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19039] setpgid(0, 0)               = 0
[pid 19039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19039] write(3, "1000", 4)         = 4
[pid 19039] close(3)                    = 0
[pid 19039] memfd_create("syzkaller", 0) = 3
[pid 19039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19039] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19039] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19039] close(4)                    = 0
[pid 19039] close(3)                    = 0
[pid 19039] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19039] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19039] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19039] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19039] open("./bus", O_RDONLY)     = 3
[pid 19039] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19039] exit_group(0)               = ?
[pid 19039] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19039, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19040
./strace-static-x86_64: Process 19040 attached
[pid 19040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19040] setpgid(0, 0)               = 0
[pid 19040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19040] write(3, "1000", 4)         = 4
[pid 19040] close(3)                    = 0
[pid 19040] memfd_create("syzkaller", 0) = 3
[pid 19040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19040] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19040] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19040] close(4)                    = 0
[pid 19040] close(3)                    = 0
[pid 19040] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19040] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19040] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19040] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19040] open("./bus", O_RDONLY)     = 3
[pid 19040] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19040] exit_group(0)               = ?
[pid 19040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19041
./strace-static-x86_64: Process 19041 attached
[pid 19041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19041] setpgid(0, 0)               = 0
[pid 19041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19041] write(3, "1000", 4)         = 4
[pid 19041] close(3)                    = 0
[pid 19041] memfd_create("syzkaller", 0) = 3
[pid 19041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19041] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19041] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19041] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19041] close(4)                    = 0
[pid 19041] close(3)                    = 0
[pid 19041] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19041] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19041] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19041] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19041] open("./bus", O_RDONLY)     = 3
[pid 19041] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19041] exit_group(0)               = ?
[pid 19041] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19041, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19042 attached
, child_tidptr=0x55555606b5d0) = 19042
[pid 19042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19042] setpgid(0, 0)               = 0
[pid 19042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19042] write(3, "1000", 4)         = 4
[pid 19042] close(3)                    = 0
[pid 19042] memfd_create("syzkaller", 0) = 3
[pid 19042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19042] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19042] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19042] close(4)                    = 0
[pid 19042] close(3)                    = 0
[pid 19042] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19042] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19042] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19042] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19042] open("./bus", O_RDONLY)     = 3
[pid 19042] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19042] exit_group(0)               = ?
[pid 19042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19042, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19043
./strace-static-x86_64: Process 19043 attached
[pid 19043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19043] setpgid(0, 0)               = 0
[pid 19043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19043] write(3, "1000", 4)         = 4
[pid 19043] close(3)                    = 0
[pid 19043] memfd_create("syzkaller", 0) = 3
[pid 19043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19043] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19043] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19043] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19043] close(4)                    = 0
[pid 19043] close(3)                    = 0
[pid 19043] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19043] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19043] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19043] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19043] open("./bus", O_RDONLY)     = 3
[pid 19043] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19043] exit_group(0)               = ?
[pid 19043] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19043, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19044 attached
, child_tidptr=0x55555606b5d0) = 19044
[pid 19044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19044] setpgid(0, 0)               = 0
[pid 19044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19044] write(3, "1000", 4)         = 4
[pid 19044] close(3)                    = 0
[pid 19044] memfd_create("syzkaller", 0) = 3
[pid 19044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19044] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19044] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19044] close(4)                    = 0
[pid 19044] close(3)                    = 0
[pid 19044] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19044] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19044] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19044] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19044] open("./bus", O_RDONLY)     = 3
[pid 19044] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19044] exit_group(0)               = ?
[pid 19044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19045 attached
, child_tidptr=0x55555606b5d0) = 19045
[pid 19045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19045] setpgid(0, 0)               = 0
[pid 19045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19045] write(3, "1000", 4)         = 4
[pid 19045] close(3)                    = 0
[pid 19045] memfd_create("syzkaller", 0) = 3
[pid 19045] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19045] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19045] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19045] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19045] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19045] close(4)                    = 0
[pid 19045] close(3)                    = 0
[pid 19045] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19045] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19045] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19045] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19045] open("./bus", O_RDONLY)     = 3
[pid 19045] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19045] exit_group(0)               = ?
[pid 19045] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19045, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19046
./strace-static-x86_64: Process 19046 attached
[pid 19046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19046] setpgid(0, 0)               = 0
[pid 19046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19046] write(3, "1000", 4)         = 4
[pid 19046] close(3)                    = 0
[pid 19046] memfd_create("syzkaller", 0) = 3
[pid 19046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19046] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19046] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19046] close(4)                    = 0
[pid 19046] close(3)                    = 0
[pid 19046] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19046] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19046] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19046] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19046] open("./bus", O_RDONLY)     = 3
[pid 19046] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19046] exit_group(0)               = ?
[pid 19046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19047 attached
, child_tidptr=0x55555606b5d0) = 19047
[pid 19047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19047] setpgid(0, 0)               = 0
[pid 19047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19047] write(3, "1000", 4)         = 4
[pid 19047] close(3)                    = 0
[pid 19047] memfd_create("syzkaller", 0) = 3
[pid 19047] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19047] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19047] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19047] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19047] close(4)                    = 0
[pid 19047] close(3)                    = 0
[pid 19047] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19047] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19047] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19047] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19047] open("./bus", O_RDONLY)     = 3
[pid 19047] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19047] exit_group(0)               = ?
[pid 19047] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19047, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19048 attached
 <unfinished ...>
[pid 19048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19048] setpgid(0, 0)               = 0
[pid 19048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19048] write(3, "1000", 4)         = 4
[pid 19048] close(3)                    = 0
[pid 19048] memfd_create("syzkaller", 0) = 3
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19048
[pid 19048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19048] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19048] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19048] close(4)                    = 0
[pid 19048] close(3)                    = 0
[pid 19048] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19048] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19048] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19048] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19048] open("./bus", O_RDONLY)     = 3
[pid 19048] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19048] exit_group(0)               = ?
[pid 19048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19048, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19049
./strace-static-x86_64: Process 19049 attached
[pid 19049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19049] setpgid(0, 0)               = 0
[pid 19049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19049] write(3, "1000", 4)         = 4
[pid 19049] close(3)                    = 0
[pid 19049] memfd_create("syzkaller", 0) = 3
[pid 19049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19049] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19049] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19049] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19049] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19049] close(4)                    = 0
[pid 19049] close(3)                    = 0
[pid 19049] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19049] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19049] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19049] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19049] open("./bus", O_RDONLY)     = 3
[pid 19049] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19049] exit_group(0)               = ?
[pid 19049] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19049, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19050
./strace-static-x86_64: Process 19050 attached
[pid 19050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19050] setpgid(0, 0)               = 0
[pid 19050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19050] write(3, "1000", 4)         = 4
[pid 19050] close(3)                    = 0
[pid 19050] memfd_create("syzkaller", 0) = 3
[pid 19050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19050] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19050] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19050] close(4)                    = 0
[pid 19050] close(3)                    = 0
[pid 19050] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19050] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19050] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19050] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19050] open("./bus", O_RDONLY)     = 3
[pid 19050] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19050] exit_group(0)               = ?
[pid 19050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19051
./strace-static-x86_64: Process 19051 attached
[pid 19051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19051] setpgid(0, 0)               = 0
[pid 19051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19051] write(3, "1000", 4)         = 4
[pid 19051] close(3)                    = 0
[pid 19051] memfd_create("syzkaller", 0) = 3
[pid 19051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19051] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19051] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19051] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19051] close(4)                    = 0
[pid 19051] close(3)                    = 0
[pid 19051] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19051] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19051] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19051] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19051] open("./bus", O_RDONLY)     = 3
[pid 19051] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19051] exit_group(0)               = ?
[pid 19051] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19051, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19052 attached
, child_tidptr=0x55555606b5d0) = 19052
[pid 19052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19052] setpgid(0, 0)               = 0
[pid 19052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19052] write(3, "1000", 4)         = 4
[pid 19052] close(3)                    = 0
[pid 19052] memfd_create("syzkaller", 0) = 3
[pid 19052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19052] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19052] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19052] close(4)                    = 0
[pid 19052] close(3)                    = 0
[pid 19052] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19052] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19052] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19052] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19052] open("./bus", O_RDONLY)     = 3
[pid 19052] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19052] exit_group(0)               = ?
[pid 19052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19053 attached
 <unfinished ...>
[pid 19053] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19053
[pid 19053] <... prctl resumed>)        = 0
[pid 19053] setpgid(0, 0)               = 0
[pid 19053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19053] write(3, "1000", 4)         = 4
[pid 19053] close(3)                    = 0
[pid 19053] memfd_create("syzkaller", 0) = 3
[pid 19053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19053] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19053] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19053] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19053] close(4)                    = 0
[pid 19053] close(3)                    = 0
[pid 19053] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19053] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19053] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19053] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19053] open("./bus", O_RDONLY)     = 3
[pid 19053] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19053] exit_group(0)               = ?
[pid 19053] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19053, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19054 attached
, child_tidptr=0x55555606b5d0) = 19054
[pid 19054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19054] setpgid(0, 0)               = 0
[pid 19054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19054] write(3, "1000", 4)         = 4
[pid 19054] close(3)                    = 0
[pid 19054] memfd_create("syzkaller", 0) = 3
[pid 19054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19054] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19054] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19054] close(4)                    = 0
[pid 19054] close(3)                    = 0
[pid 19054] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19054] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19054] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19054] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19054] open("./bus", O_RDONLY)     = 3
[pid 19054] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19054] exit_group(0)               = ?
[pid 19054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19055
./strace-static-x86_64: Process 19055 attached
[pid 19055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19055] setpgid(0, 0)               = 0
[pid 19055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19055] write(3, "1000", 4)         = 4
[pid 19055] close(3)                    = 0
[pid 19055] memfd_create("syzkaller", 0) = 3
[pid 19055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19055] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19055] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19055] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19055] close(4)                    = 0
[pid 19055] close(3)                    = 0
[pid 19055] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19055] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19055] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19055] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19055] open("./bus", O_RDONLY)     = 3
[pid 19055] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19055] exit_group(0)               = ?
[pid 19055] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19055, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19056
./strace-static-x86_64: Process 19056 attached
[pid 19056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19056] setpgid(0, 0)               = 0
[pid 19056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19056] write(3, "1000", 4)         = 4
[pid 19056] close(3)                    = 0
[pid 19056] memfd_create("syzkaller", 0) = 3
[pid 19056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19056] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19056] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19056] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19056] close(4)                    = 0
[pid 19056] close(3)                    = 0
[pid 19056] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19056] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19056] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19056] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19056] open("./bus", O_RDONLY)     = 3
[pid 19056] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19056] exit_group(0)               = ?
[pid 19056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19057 attached
, child_tidptr=0x55555606b5d0) = 19057
[pid 19057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19057] setpgid(0, 0)               = 0
[pid 19057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19057] write(3, "1000", 4)         = 4
[pid 19057] close(3)                    = 0
[pid 19057] memfd_create("syzkaller", 0) = 3
[pid 19057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19057] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19057] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19057] close(4)                    = 0
[pid 19057] close(3)                    = 0
[pid 19057] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19057] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19057] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19057] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19057] open("./bus", O_RDONLY)     = 3
[pid 19057] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19057] exit_group(0)               = ?
[pid 19057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19057, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19058 attached
 <unfinished ...>
[pid 19058] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19058
[pid 19058] <... prctl resumed>)        = 0
[pid 19058] setpgid(0, 0)               = 0
[pid 19058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19058] write(3, "1000", 4)         = 4
[pid 19058] close(3)                    = 0
[pid 19058] memfd_create("syzkaller", 0) = 3
[pid 19058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19058] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19058] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19058] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19058] close(4)                    = 0
[pid 19058] close(3)                    = 0
[pid 19058] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19058] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19058] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19058] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19058] open("./bus", O_RDONLY)     = 3
[pid 19058] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19058] exit_group(0)               = ?
[pid 19058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19058, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19059 attached
, child_tidptr=0x55555606b5d0) = 19059
[pid 19059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19059] setpgid(0, 0)               = 0
[pid 19059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19059] write(3, "1000", 4)         = 4
[pid 19059] close(3)                    = 0
[pid 19059] memfd_create("syzkaller", 0) = 3
[pid 19059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19059] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19059] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19059] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19059] close(4)                    = 0
[pid 19059] close(3)                    = 0
[pid 19059] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19059] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19059] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19059] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19059] open("./bus", O_RDONLY)     = 3
[pid 19059] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19059] exit_group(0)               = ?
[pid 19059] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19059, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19060
./strace-static-x86_64: Process 19060 attached
[pid 19060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19060] setpgid(0, 0)               = 0
[pid 19060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19060] write(3, "1000", 4)         = 4
[pid 19060] close(3)                    = 0
[pid 19060] memfd_create("syzkaller", 0) = 3
[pid 19060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19060] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19060] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19060] close(4)                    = 0
[pid 19060] close(3)                    = 0
[pid 19060] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19060] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19060] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19060] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19060] open("./bus", O_RDONLY)     = 3
[pid 19060] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19060] exit_group(0)               = ?
[pid 19060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19061
./strace-static-x86_64: Process 19061 attached
[pid 19061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19061] setpgid(0, 0)               = 0
[pid 19061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19061] write(3, "1000", 4)         = 4
[pid 19061] close(3)                    = 0
[pid 19061] memfd_create("syzkaller", 0) = 3
[pid 19061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19061] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19061] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19061] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19061] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19061] close(4)                    = 0
[pid 19061] close(3)                    = 0
[pid 19061] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19061] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19061] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19061] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19061] open("./bus", O_RDONLY)     = 3
[pid 19061] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19061] exit_group(0)               = ?
[pid 19061] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19061, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19062
./strace-static-x86_64: Process 19062 attached
[pid 19062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19062] setpgid(0, 0)               = 0
[pid 19062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19062] write(3, "1000", 4)         = 4
[pid 19062] close(3)                    = 0
[pid 19062] memfd_create("syzkaller", 0) = 3
[pid 19062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19062] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19062] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19062] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19062] close(4)                    = 0
[pid 19062] close(3)                    = 0
[pid 19062] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19062] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19062] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19062] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19062] open("./bus", O_RDONLY)     = 3
[pid 19062] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19062] exit_group(0)               = ?
[pid 19062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19062, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19063 attached
, child_tidptr=0x55555606b5d0) = 19063
[pid 19063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19063] setpgid(0, 0)               = 0
[pid 19063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19063] write(3, "1000", 4)         = 4
[pid 19063] close(3)                    = 0
[pid 19063] memfd_create("syzkaller", 0) = 3
[pid 19063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19063] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19063] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19063] close(4)                    = 0
[pid 19063] close(3)                    = 0
[pid 19063] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19063] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19063] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19063] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19063] open("./bus", O_RDONLY)     = 3
[pid 19063] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19063] exit_group(0)               = ?
[pid 19063] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19063, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19064 attached
, child_tidptr=0x55555606b5d0) = 19064
[pid 19064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19064] setpgid(0, 0)               = 0
[pid 19064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19064] write(3, "1000", 4)         = 4
[pid 19064] close(3)                    = 0
[pid 19064] memfd_create("syzkaller", 0) = 3
[pid 19064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19064] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19064] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19064] close(4)                    = 0
[pid 19064] close(3)                    = 0
[pid 19064] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19064] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19064] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19064] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19064] open("./bus", O_RDONLY)     = 3
[pid 19064] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19064] exit_group(0)               = ?
[pid 19064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19065 attached
, child_tidptr=0x55555606b5d0) = 19065
[pid 19065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19065] setpgid(0, 0)               = 0
[pid 19065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19065] write(3, "1000", 4)         = 4
[pid 19065] close(3)                    = 0
[pid 19065] memfd_create("syzkaller", 0) = 3
[pid 19065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19065] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19065] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19065] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19065] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19065] close(4)                    = 0
[pid 19065] close(3)                    = 0
[pid 19065] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19065] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19065] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19065] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19065] open("./bus", O_RDONLY)     = 3
[pid 19065] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19065] exit_group(0)               = ?
[pid 19065] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19065, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19066 attached
, child_tidptr=0x55555606b5d0) = 19066
[pid 19066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19066] setpgid(0, 0)               = 0
[pid 19066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19066] write(3, "1000", 4)         = 4
[pid 19066] close(3)                    = 0
[pid 19066] memfd_create("syzkaller", 0) = 3
[pid 19066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19066] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19066] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19066] close(4)                    = 0
[pid 19066] close(3)                    = 0
[pid 19066] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19066] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19066] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19066] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19066] open("./bus", O_RDONLY)     = 3
[pid 19066] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19066] exit_group(0)               = ?
[pid 19066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19067 attached
, child_tidptr=0x55555606b5d0) = 19067
[pid 19067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19067] setpgid(0, 0)               = 0
[pid 19067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19067] write(3, "1000", 4)         = 4
[pid 19067] close(3)                    = 0
[pid 19067] memfd_create("syzkaller", 0) = 3
[pid 19067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19067] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19067] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19067] close(4)                    = 0
[pid 19067] close(3)                    = 0
[pid 19067] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19067] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19067] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19067] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19067] open("./bus", O_RDONLY)     = 3
[pid 19067] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19067] exit_group(0)               = ?
[pid 19067] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19067, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19068 attached
, child_tidptr=0x55555606b5d0) = 19068
[pid 19068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19068] setpgid(0, 0)               = 0
[pid 19068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19068] write(3, "1000", 4)         = 4
[pid 19068] close(3)                    = 0
[pid 19068] memfd_create("syzkaller", 0) = 3
[pid 19068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19068] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19068] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19068] close(4)                    = 0
[pid 19068] close(3)                    = 0
[pid 19068] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19068] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19068] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19068] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19068] open("./bus", O_RDONLY)     = 3
[pid 19068] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19068] exit_group(0)               = ?
[pid 19068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19069
./strace-static-x86_64: Process 19069 attached
[pid 19069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19069] setpgid(0, 0)               = 0
[pid 19069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19069] write(3, "1000", 4)         = 4
[pid 19069] close(3)                    = 0
[pid 19069] memfd_create("syzkaller", 0) = 3
[pid 19069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19069] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19069] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19069] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19069] close(4)                    = 0
[pid 19069] close(3)                    = 0
[pid 19069] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19069] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19069] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19069] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19069] open("./bus", O_RDONLY)     = 3
[pid 19069] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19069] exit_group(0)               = ?
[pid 19069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19069, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19070 attached
, child_tidptr=0x55555606b5d0) = 19070
[pid 19070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19070] setpgid(0, 0)               = 0
[pid 19070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19070] write(3, "1000", 4)         = 4
[pid 19070] close(3)                    = 0
[pid 19070] memfd_create("syzkaller", 0) = 3
[pid 19070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19070] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19070] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19070] close(4)                    = 0
[pid 19070] close(3)                    = 0
[pid 19070] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19070] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19070] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19070] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19070] open("./bus", O_RDONLY)     = 3
[pid 19070] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19070] exit_group(0)               = ?
[pid 19070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19071
./strace-static-x86_64: Process 19071 attached
[pid 19071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19071] setpgid(0, 0)               = 0
[pid 19071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19071] write(3, "1000", 4)         = 4
[pid 19071] close(3)                    = 0
[pid 19071] memfd_create("syzkaller", 0) = 3
[pid 19071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19071] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19071] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19071] close(4)                    = 0
[pid 19071] close(3)                    = 0
[pid 19071] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19071] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19071] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19071] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19071] open("./bus", O_RDONLY)     = 3
[pid 19071] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19071] exit_group(0)               = ?
[pid 19071] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19071, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19072
./strace-static-x86_64: Process 19072 attached
[pid 19072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19072] setpgid(0, 0)               = 0
[pid 19072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19072] write(3, "1000", 4)         = 4
[pid 19072] close(3)                    = 0
[pid 19072] memfd_create("syzkaller", 0) = 3
[pid 19072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19072] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19072] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19072] close(4)                    = 0
[pid 19072] close(3)                    = 0
[pid 19072] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19072] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19072] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19072] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19072] open("./bus", O_RDONLY)     = 3
[pid 19072] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19072] exit_group(0)               = ?
[pid 19072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19073
./strace-static-x86_64: Process 19073 attached
[pid 19073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19073] setpgid(0, 0)               = 0
[pid 19073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19073] write(3, "1000", 4)         = 4
[pid 19073] close(3)                    = 0
[pid 19073] memfd_create("syzkaller", 0) = 3
[pid 19073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19073] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19073] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19073] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19073] close(4)                    = 0
[pid 19073] close(3)                    = 0
[pid 19073] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19073] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19073] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19073] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19073] open("./bus", O_RDONLY)     = 3
[pid 19073] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19073] exit_group(0)               = ?
[pid 19073] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19073, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19074 attached
, child_tidptr=0x55555606b5d0) = 19074
[pid 19074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19074] setpgid(0, 0)               = 0
[pid 19074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19074] write(3, "1000", 4)         = 4
[pid 19074] close(3)                    = 0
[pid 19074] memfd_create("syzkaller", 0) = 3
[pid 19074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19074] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19074] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19074] close(4)                    = 0
[pid 19074] close(3)                    = 0
[pid 19074] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19074] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19074] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19074] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19074] open("./bus", O_RDONLY)     = 3
[pid 19074] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19074] exit_group(0)               = ?
[pid 19074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19075
./strace-static-x86_64: Process 19075 attached
[pid 19075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19075] setpgid(0, 0)               = 0
[pid 19075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19075] write(3, "1000", 4)         = 4
[pid 19075] close(3)                    = 0
[pid 19075] memfd_create("syzkaller", 0) = 3
[pid 19075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19075] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19075] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19075] close(4)                    = 0
[pid 19075] close(3)                    = 0
[pid 19075] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19075] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19075] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19075] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19075] open("./bus", O_RDONLY)     = 3
[pid 19075] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19075] exit_group(0)               = ?
[pid 19075] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19075, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19076 attached
, child_tidptr=0x55555606b5d0) = 19076
[pid 19076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19076] setpgid(0, 0)               = 0
[pid 19076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19076] write(3, "1000", 4)         = 4
[pid 19076] close(3)                    = 0
[pid 19076] memfd_create("syzkaller", 0) = 3
[pid 19076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19076] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19076] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19076] close(4)                    = 0
[pid 19076] close(3)                    = 0
[pid 19076] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19076] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19076] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19076] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19076] open("./bus", O_RDONLY)     = 3
[pid 19076] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19076] exit_group(0)               = ?
[pid 19076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19077
./strace-static-x86_64: Process 19077 attached
[pid 19077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19077] setpgid(0, 0)               = 0
[pid 19077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19077] write(3, "1000", 4)         = 4
[pid 19077] close(3)                    = 0
[pid 19077] memfd_create("syzkaller", 0) = 3
[pid 19077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19077] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19077] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19077] close(4)                    = 0
[pid 19077] close(3)                    = 0
[pid 19077] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19077] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19077] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19077] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19077] open("./bus", O_RDONLY)     = 3
[pid 19077] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19077] exit_group(0)               = ?
[pid 19077] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19077, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19078 attached
, child_tidptr=0x55555606b5d0) = 19078
[pid 19078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19078] setpgid(0, 0)               = 0
[pid 19078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19078] write(3, "1000", 4)         = 4
[pid 19078] close(3)                    = 0
[pid 19078] memfd_create("syzkaller", 0) = 3
[pid 19078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19078] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19078] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19078] close(4)                    = 0
[pid 19078] close(3)                    = 0
[pid 19078] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19078] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19078] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19078] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19078] open("./bus", O_RDONLY)     = 3
[pid 19078] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19078] exit_group(0)               = ?
[pid 19078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19078, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19079
./strace-static-x86_64: Process 19079 attached
[pid 19079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19079] setpgid(0, 0)               = 0
[pid 19079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19079] write(3, "1000", 4)         = 4
[pid 19079] close(3)                    = 0
[pid 19079] memfd_create("syzkaller", 0) = 3
[pid 19079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19079] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19079] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19079] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19079] close(4)                    = 0
[pid 19079] close(3)                    = 0
[pid 19079] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19079] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19079] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19079] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19079] open("./bus", O_RDONLY)     = 3
[pid 19079] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19079] exit_group(0)               = ?
[pid 19079] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19079, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19080 attached
, child_tidptr=0x55555606b5d0) = 19080
[pid 19080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19080] setpgid(0, 0)               = 0
[pid 19080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19080] write(3, "1000", 4)         = 4
[pid 19080] close(3)                    = 0
[pid 19080] memfd_create("syzkaller", 0) = 3
[pid 19080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19080] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19080] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19080] close(4)                    = 0
[pid 19080] close(3)                    = 0
[pid 19080] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19080] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19080] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19080] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19080] open("./bus", O_RDONLY)     = 3
[pid 19080] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19080] exit_group(0)               = ?
[pid 19080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19080, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19081 attached
, child_tidptr=0x55555606b5d0) = 19081
[pid 19081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19081] setpgid(0, 0)               = 0
[pid 19081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19081] write(3, "1000", 4)         = 4
[pid 19081] close(3)                    = 0
[pid 19081] memfd_create("syzkaller", 0) = 3
[pid 19081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19081] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19081] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19081] close(4)                    = 0
[pid 19081] close(3)                    = 0
[pid 19081] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19081] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19081] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19081] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19081] open("./bus", O_RDONLY)     = 3
[pid 19081] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19081] exit_group(0)               = ?
[pid 19081] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19081, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19082
./strace-static-x86_64: Process 19082 attached
[pid 19082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19082] setpgid(0, 0)               = 0
[pid 19082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19082] write(3, "1000", 4)         = 4
[pid 19082] close(3)                    = 0
[pid 19082] memfd_create("syzkaller", 0) = 3
[pid 19082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19082] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19082] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19082] close(4)                    = 0
[pid 19082] close(3)                    = 0
[pid 19082] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19082] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19082] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19082] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19082] open("./bus", O_RDONLY)     = 3
[pid 19082] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19082] exit_group(0)               = ?
[pid 19082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19083 attached
, child_tidptr=0x55555606b5d0) = 19083
[pid 19083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19083] setpgid(0, 0)               = 0
[pid 19083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19083] write(3, "1000", 4)         = 4
[pid 19083] close(3)                    = 0
[pid 19083] memfd_create("syzkaller", 0) = 3
[pid 19083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19083] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19083] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19083] close(4)                    = 0
[pid 19083] close(3)                    = 0
[pid 19083] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19083] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19083] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19083] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19083] open("./bus", O_RDONLY)     = 3
[pid 19083] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19083] exit_group(0)               = ?
[pid 19083] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19083, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19084 attached
, child_tidptr=0x55555606b5d0) = 19084
[pid 19084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19084] setpgid(0, 0)               = 0
[pid 19084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19084] write(3, "1000", 4)         = 4
[pid 19084] close(3)                    = 0
[pid 19084] memfd_create("syzkaller", 0) = 3
[pid 19084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19084] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19084] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19084] close(4)                    = 0
[pid 19084] close(3)                    = 0
[pid 19084] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19084] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19084] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19084] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19084] open("./bus", O_RDONLY)     = 3
[pid 19084] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19084] exit_group(0)               = ?
[pid 19084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19085 attached
, child_tidptr=0x55555606b5d0) = 19085
[pid 19085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19085] setpgid(0, 0)               = 0
[pid 19085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19085] write(3, "1000", 4)         = 4
[pid 19085] close(3)                    = 0
[pid 19085] memfd_create("syzkaller", 0) = 3
[pid 19085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19085] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19085] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19085] close(4)                    = 0
[pid 19085] close(3)                    = 0
[pid 19085] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19085] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19085] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19085] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19085] open("./bus", O_RDONLY)     = 3
[pid 19085] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19085] exit_group(0)               = ?
[pid 19085] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19085, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19086 attached
, child_tidptr=0x55555606b5d0) = 19086
[pid 19086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19086] setpgid(0, 0)               = 0
[pid 19086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19086] write(3, "1000", 4)         = 4
[pid 19086] close(3)                    = 0
[pid 19086] memfd_create("syzkaller", 0) = 3
[pid 19086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19086] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19086] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19086] close(4)                    = 0
[pid 19086] close(3)                    = 0
[pid 19086] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19086] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19086] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19086] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19086] open("./bus", O_RDONLY)     = 3
[pid 19086] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19086] exit_group(0)               = ?
[pid 19086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19086, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19087 attached
, child_tidptr=0x55555606b5d0) = 19087
[pid 19087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19087] setpgid(0, 0)               = 0
[pid 19087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19087] write(3, "1000", 4)         = 4
[pid 19087] close(3)                    = 0
[pid 19087] memfd_create("syzkaller", 0) = 3
[pid 19087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19087] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19087] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19087] close(4)                    = 0
[pid 19087] close(3)                    = 0
[pid 19087] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19087] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19087] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19087] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19087] open("./bus", O_RDONLY)     = 3
[pid 19087] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19087] exit_group(0)               = ?
[pid 19087] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19087, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19088 attached
, child_tidptr=0x55555606b5d0) = 19088
[pid 19088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19088] setpgid(0, 0)               = 0
[pid 19088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19088] write(3, "1000", 4)         = 4
[pid 19088] close(3)                    = 0
[pid 19088] memfd_create("syzkaller", 0) = 3
[pid 19088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19088] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19088] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19088] close(4)                    = 0
[pid 19088] close(3)                    = 0
[pid 19088] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19088] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19088] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19088] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19088] open("./bus", O_RDONLY)     = 3
[pid 19088] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19088] exit_group(0)               = ?
[pid 19088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19089
./strace-static-x86_64: Process 19089 attached
[pid 19089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19089] setpgid(0, 0)               = 0
[pid 19089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19089] write(3, "1000", 4)         = 4
[pid 19089] close(3)                    = 0
[pid 19089] memfd_create("syzkaller", 0) = 3
[pid 19089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19089] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19089] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19089] close(4)                    = 0
[pid 19089] close(3)                    = 0
[pid 19089] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19089] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19089] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19089] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19089] open("./bus", O_RDONLY)     = 3
[pid 19089] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19089] exit_group(0)               = ?
[pid 19089] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19089, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19090 attached
, child_tidptr=0x55555606b5d0) = 19090
[pid 19090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19090] setpgid(0, 0)               = 0
[pid 19090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19090] write(3, "1000", 4)         = 4
[pid 19090] close(3)                    = 0
[pid 19090] memfd_create("syzkaller", 0) = 3
[pid 19090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19090] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19090] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19090] close(4)                    = 0
[pid 19090] close(3)                    = 0
[pid 19090] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19090] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19090] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19090] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19090] open("./bus", O_RDONLY)     = 3
[pid 19090] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19090] exit_group(0)               = ?
[pid 19090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19090, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19091 attached
, child_tidptr=0x55555606b5d0) = 19091
[pid 19091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19091] setpgid(0, 0)               = 0
[pid 19091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19091] write(3, "1000", 4)         = 4
[pid 19091] close(3)                    = 0
[pid 19091] memfd_create("syzkaller", 0) = 3
[pid 19091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19091] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19091] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19091] close(4)                    = 0
[pid 19091] close(3)                    = 0
[pid 19091] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19091] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19091] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19091] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19091] open("./bus", O_RDONLY)     = 3
[pid 19091] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19091] exit_group(0)               = ?
[pid 19091] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19091, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19092 attached
, child_tidptr=0x55555606b5d0) = 19092
[pid 19092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19092] setpgid(0, 0)               = 0
[pid 19092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19092] write(3, "1000", 4)         = 4
[pid 19092] close(3)                    = 0
[pid 19092] memfd_create("syzkaller", 0) = 3
[pid 19092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19092] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19092] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19092] close(4)                    = 0
[pid 19092] close(3)                    = 0
[pid 19092] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19092] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19092] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19092] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19092] open("./bus", O_RDONLY)     = 3
[pid 19092] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19092] exit_group(0)               = ?
[pid 19092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19093 attached
, child_tidptr=0x55555606b5d0) = 19093
[pid 19093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19093] setpgid(0, 0)               = 0
[pid 19093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19093] write(3, "1000", 4)         = 4
[pid 19093] close(3)                    = 0
[pid 19093] memfd_create("syzkaller", 0) = 3
[pid 19093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19093] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19093] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19093] close(4)                    = 0
[pid 19093] close(3)                    = 0
[pid 19093] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19093] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19093] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19093] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19093] open("./bus", O_RDONLY)     = 3
[pid 19093] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19093] exit_group(0)               = ?
[pid 19093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19093, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19094 attached
, child_tidptr=0x55555606b5d0) = 19094
[pid 19094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19094] setpgid(0, 0)               = 0
[pid 19094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19094] write(3, "1000", 4)         = 4
[pid 19094] close(3)                    = 0
[pid 19094] memfd_create("syzkaller", 0) = 3
[pid 19094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19094] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19094] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19094] close(4)                    = 0
[pid 19094] close(3)                    = 0
[pid 19094] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19094] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19094] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19094] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19094] open("./bus", O_RDONLY)     = 3
[pid 19094] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19094] exit_group(0)               = ?
[pid 19094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19095 attached
, child_tidptr=0x55555606b5d0) = 19095
[pid 19095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19095] setpgid(0, 0)               = 0
[pid 19095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19095] write(3, "1000", 4)         = 4
[pid 19095] close(3)                    = 0
[pid 19095] memfd_create("syzkaller", 0) = 3
[pid 19095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19095] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19095] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19095] close(4)                    = 0
[pid 19095] close(3)                    = 0
[pid 19095] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19095] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19095] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19095] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19095] open("./bus", O_RDONLY)     = 3
[pid 19095] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19095] exit_group(0)               = ?
[pid 19095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19095, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19096
./strace-static-x86_64: Process 19096 attached
[pid 19096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19096] setpgid(0, 0)               = 0
[pid 19096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19096] write(3, "1000", 4)         = 4
[pid 19096] close(3)                    = 0
[pid 19096] memfd_create("syzkaller", 0) = 3
[pid 19096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19096] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19096] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19096] close(4)                    = 0
[pid 19096] close(3)                    = 0
[pid 19096] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19096] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19096] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19096] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19096] open("./bus", O_RDONLY)     = 3
[pid 19096] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19096] exit_group(0)               = ?
[pid 19096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19097
./strace-static-x86_64: Process 19097 attached
[pid 19097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19097] setpgid(0, 0)               = 0
[pid 19097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19097] write(3, "1000", 4)         = 4
[pid 19097] close(3)                    = 0
[pid 19097] memfd_create("syzkaller", 0) = 3
[pid 19097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19097] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19097] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19097] close(4)                    = 0
[pid 19097] close(3)                    = 0
[pid 19097] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19097] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19097] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19097] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19097] open("./bus", O_RDONLY)     = 3
[pid 19097] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19097] exit_group(0)               = ?
[pid 19097] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19097, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19098
./strace-static-x86_64: Process 19098 attached
[pid 19098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19098] setpgid(0, 0)               = 0
[pid 19098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19098] write(3, "1000", 4)         = 4
[pid 19098] close(3)                    = 0
[pid 19098] memfd_create("syzkaller", 0) = 3
[pid 19098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19098] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19098] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19098] close(4)                    = 0
[pid 19098] close(3)                    = 0
[pid 19098] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19098] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19098] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19098] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19098] open("./bus", O_RDONLY)     = 3
[pid 19098] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19098] exit_group(0)               = ?
[pid 19098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19099 attached
, child_tidptr=0x55555606b5d0) = 19099
[pid 19099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19099] setpgid(0, 0)               = 0
[pid 19099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19099] write(3, "1000", 4)         = 4
[pid 19099] close(3)                    = 0
[pid 19099] memfd_create("syzkaller", 0) = 3
[pid 19099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19099] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19099] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19099] close(4)                    = 0
[pid 19099] close(3)                    = 0
[pid 19099] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19099] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19099] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19099] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19099] open("./bus", O_RDONLY)     = 3
[pid 19099] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19099] exit_group(0)               = ?
[pid 19099] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19099, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19100 attached
, child_tidptr=0x55555606b5d0) = 19100
[pid 19100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19100] setpgid(0, 0)               = 0
[pid 19100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19100] write(3, "1000", 4)         = 4
[pid 19100] close(3)                    = 0
[pid 19100] memfd_create("syzkaller", 0) = 3
[pid 19100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19100] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19100] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19100] close(4)                    = 0
[pid 19100] close(3)                    = 0
[pid 19100] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19100] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19100] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19100] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19100] open("./bus", O_RDONLY)     = 3
[pid 19100] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19100] exit_group(0)               = ?
[pid 19100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19100, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19101 attached
, child_tidptr=0x55555606b5d0) = 19101
[pid 19101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19101] setpgid(0, 0)               = 0
[pid 19101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19101] write(3, "1000", 4)         = 4
[pid 19101] close(3)                    = 0
[pid 19101] memfd_create("syzkaller", 0) = 3
[pid 19101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19101] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19101] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19101] close(4)                    = 0
[pid 19101] close(3)                    = 0
[pid 19101] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19101] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19101] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19101] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19101] open("./bus", O_RDONLY)     = 3
[pid 19101] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19101] exit_group(0)               = ?
[pid 19101] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19101, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19102 attached
 <unfinished ...>
[pid 19102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19102] setpgid(0, 0)               = 0
[pid 19102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19102
[pid 19102] <... openat resumed>)       = 3
[pid 19102] write(3, "1000", 4)         = 4
[pid 19102] close(3)                    = 0
[pid 19102] memfd_create("syzkaller", 0) = 3
[pid 19102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19102] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19102] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19102] close(4)                    = 0
[pid 19102] close(3)                    = 0
[pid 19102] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19102] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19102] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19102] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19102] open("./bus", O_RDONLY)     = 3
[pid 19102] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19102] exit_group(0)               = ?
[pid 19102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19103 attached
, child_tidptr=0x55555606b5d0) = 19103
[pid 19103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19103] setpgid(0, 0)               = 0
[pid 19103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19103] write(3, "1000", 4)         = 4
[pid 19103] close(3)                    = 0
[pid 19103] memfd_create("syzkaller", 0) = 3
[pid 19103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19103] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19103] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19103] close(4)                    = 0
[pid 19103] close(3)                    = 0
[pid 19103] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19103] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19103] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19103] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19103] open("./bus", O_RDONLY)     = 3
[pid 19103] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19103] exit_group(0)               = ?
[pid 19103] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19103, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19104 attached
, child_tidptr=0x55555606b5d0) = 19104
[pid 19104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19104] setpgid(0, 0)               = 0
[pid 19104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19104] write(3, "1000", 4)         = 4
[pid 19104] close(3)                    = 0
[pid 19104] memfd_create("syzkaller", 0) = 3
[pid 19104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19104] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19104] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19104] close(4)                    = 0
[pid 19104] close(3)                    = 0
[pid 19104] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19104] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19104] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19104] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19104] open("./bus", O_RDONLY)     = 3
[pid 19104] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19104] exit_group(0)               = ?
[pid 19104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19105
./strace-static-x86_64: Process 19105 attached
[pid 19105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19105] setpgid(0, 0)               = 0
[pid 19105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19105] write(3, "1000", 4)         = 4
[pid 19105] close(3)                    = 0
[pid 19105] memfd_create("syzkaller", 0) = 3
[pid 19105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19105] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19105] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19105] close(4)                    = 0
[pid 19105] close(3)                    = 0
[pid 19105] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19105] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19105] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19105] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19105] open("./bus", O_RDONLY)     = 3
[pid 19105] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19105] exit_group(0)               = ?
[pid 19105] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19105, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19106 attached
, child_tidptr=0x55555606b5d0) = 19106
[pid 19106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19106] setpgid(0, 0)               = 0
[pid 19106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19106] write(3, "1000", 4)         = 4
[pid 19106] close(3)                    = 0
[pid 19106] memfd_create("syzkaller", 0) = 3
[pid 19106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19106] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19106] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19106] close(4)                    = 0
[pid 19106] close(3)                    = 0
[pid 19106] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19106] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19106] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19106] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19106] open("./bus", O_RDONLY)     = 3
[pid 19106] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19106] exit_group(0)               = ?
[pid 19106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19107
./strace-static-x86_64: Process 19107 attached
[pid 19107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19107] setpgid(0, 0)               = 0
[pid 19107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19107] write(3, "1000", 4)         = 4
[pid 19107] close(3)                    = 0
[pid 19107] memfd_create("syzkaller", 0) = 3
[pid 19107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19107] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19107] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19107] close(4)                    = 0
[pid 19107] close(3)                    = 0
[pid 19107] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19107] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19107] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19107] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19107] open("./bus", O_RDONLY)     = 3
[pid 19107] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19107] exit_group(0)               = ?
[pid 19107] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19107, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19108
./strace-static-x86_64: Process 19108 attached
[pid 19108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19108] setpgid(0, 0)               = 0
[pid 19108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19108] write(3, "1000", 4)         = 4
[pid 19108] close(3)                    = 0
[pid 19108] memfd_create("syzkaller", 0) = 3
[pid 19108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19108] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19108] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19108] close(4)                    = 0
[pid 19108] close(3)                    = 0
[pid 19108] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19108] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19108] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19108] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19108] open("./bus", O_RDONLY)     = 3
[pid 19108] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19108] exit_group(0)               = ?
[pid 19108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19109 attached
, child_tidptr=0x55555606b5d0) = 19109
[pid 19109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19109] setpgid(0, 0)               = 0
[pid 19109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19109] write(3, "1000", 4)         = 4
[pid 19109] close(3)                    = 0
[pid 19109] memfd_create("syzkaller", 0) = 3
[pid 19109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19109] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19109] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19109] close(4)                    = 0
[pid 19109] close(3)                    = 0
[pid 19109] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19109] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19109] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19109] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19109] open("./bus", O_RDONLY)     = 3
[pid 19109] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19109] exit_group(0)               = ?
[pid 19109] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19109, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19110
./strace-static-x86_64: Process 19110 attached
[pid 19110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19110] setpgid(0, 0)               = 0
[pid 19110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19110] write(3, "1000", 4)         = 4
[pid 19110] close(3)                    = 0
[pid 19110] memfd_create("syzkaller", 0) = 3
[pid 19110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19110] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19110] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19110] close(4)                    = 0
[pid 19110] close(3)                    = 0
[pid 19110] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19110] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19110] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19110] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19110] open("./bus", O_RDONLY)     = 3
[pid 19110] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19110] exit_group(0)               = ?
[pid 19110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19111 attached
, child_tidptr=0x55555606b5d0) = 19111
[pid 19111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19111] setpgid(0, 0)               = 0
[pid 19111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19111] write(3, "1000", 4)         = 4
[pid 19111] close(3)                    = 0
[pid 19111] memfd_create("syzkaller", 0) = 3
[pid 19111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19111] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19111] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19111] close(4)                    = 0
[pid 19111] close(3)                    = 0
[pid 19111] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19111] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19111] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19111] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19111] open("./bus", O_RDONLY)     = 3
[pid 19111] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19111] exit_group(0)               = ?
[pid 19111] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19111, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19112 attached
, child_tidptr=0x55555606b5d0) = 19112
[pid 19112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19112] setpgid(0, 0)               = 0
[pid 19112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19112] write(3, "1000", 4)         = 4
[pid 19112] close(3)                    = 0
[pid 19112] memfd_create("syzkaller", 0) = 3
[pid 19112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19112] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19112] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19112] close(4)                    = 0
[pid 19112] close(3)                    = 0
[pid 19112] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19112] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19112] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19112] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19112] open("./bus", O_RDONLY)     = 3
[pid 19112] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19112] exit_group(0)               = ?
[pid 19112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19112, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19113 attached
, child_tidptr=0x55555606b5d0) = 19113
[pid 19113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19113] setpgid(0, 0)               = 0
[pid 19113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19113] write(3, "1000", 4)         = 4
[pid 19113] close(3)                    = 0
[pid 19113] memfd_create("syzkaller", 0) = 3
[pid 19113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19113] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19113] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19113] close(4)                    = 0
[pid 19113] close(3)                    = 0
[pid 19113] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19113] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19113] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19113] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19113] open("./bus", O_RDONLY)     = 3
[pid 19113] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19113] exit_group(0)               = ?
[pid 19113] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19113, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19114
./strace-static-x86_64: Process 19114 attached
[pid 19114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19114] setpgid(0, 0)               = 0
[pid 19114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19114] write(3, "1000", 4)         = 4
[pid 19114] close(3)                    = 0
[pid 19114] memfd_create("syzkaller", 0) = 3
[pid 19114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19114] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19114] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19114] close(4)                    = 0
[pid 19114] close(3)                    = 0
[pid 19114] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19114] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19114] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19114] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19114] open("./bus", O_RDONLY)     = 3
[pid 19114] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19114] exit_group(0)               = ?
[pid 19114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19115 attached
, child_tidptr=0x55555606b5d0) = 19115
[pid 19115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19115] setpgid(0, 0)               = 0
[pid 19115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19115] write(3, "1000", 4)         = 4
[pid 19115] close(3)                    = 0
[pid 19115] memfd_create("syzkaller", 0) = 3
[pid 19115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19115] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19115] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19115] close(4)                    = 0
[pid 19115] close(3)                    = 0
[pid 19115] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19115] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19115] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19115] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19115] open("./bus", O_RDONLY)     = 3
[pid 19115] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19115] exit_group(0)               = ?
[pid 19115] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19115, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19116 attached
, child_tidptr=0x55555606b5d0) = 19116
[pid 19116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19116] setpgid(0, 0)               = 0
[pid 19116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19116] write(3, "1000", 4)         = 4
[pid 19116] close(3)                    = 0
[pid 19116] memfd_create("syzkaller", 0) = 3
[pid 19116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19116] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19116] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19116] close(4)                    = 0
[pid 19116] close(3)                    = 0
[pid 19116] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19116] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19116] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19116] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19116] open("./bus", O_RDONLY)     = 3
[pid 19116] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19116] exit_group(0)               = ?
[pid 19116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19117 attached
, child_tidptr=0x55555606b5d0) = 19117
[pid 19117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19117] setpgid(0, 0)               = 0
[pid 19117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19117] write(3, "1000", 4)         = 4
[pid 19117] close(3)                    = 0
[pid 19117] memfd_create("syzkaller", 0) = 3
[pid 19117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19117] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19117] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19117] close(4)                    = 0
[pid 19117] close(3)                    = 0
[pid 19117] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19117] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19117] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19117] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19117] open("./bus", O_RDONLY)     = 3
[pid 19117] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19117] exit_group(0)               = ?
[pid 19117] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19117, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19118 attached
, child_tidptr=0x55555606b5d0) = 19118
[pid 19118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19118] setpgid(0, 0)               = 0
[pid 19118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19118] write(3, "1000", 4)         = 4
[pid 19118] close(3)                    = 0
[pid 19118] memfd_create("syzkaller", 0) = 3
[pid 19118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19118] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19118] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19118] close(4)                    = 0
[pid 19118] close(3)                    = 0
[pid 19118] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19118] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19118] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19118] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19118] open("./bus", O_RDONLY)     = 3
[pid 19118] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19118] exit_group(0)               = ?
[pid 19118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19118, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19119
./strace-static-x86_64: Process 19119 attached
[pid 19119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19119] setpgid(0, 0)               = 0
[pid 19119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19119] write(3, "1000", 4)         = 4
[pid 19119] close(3)                    = 0
[pid 19119] memfd_create("syzkaller", 0) = 3
[pid 19119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19119] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19119] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19119] close(4)                    = 0
[pid 19119] close(3)                    = 0
[pid 19119] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19119] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19119] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19119] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19119] open("./bus", O_RDONLY)     = 3
[pid 19119] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19119] exit_group(0)               = ?
[pid 19119] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19119, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19120 attached
, child_tidptr=0x55555606b5d0) = 19120
[pid 19120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19120] setpgid(0, 0)               = 0
[pid 19120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19120] write(3, "1000", 4)         = 4
[pid 19120] close(3)                    = 0
[pid 19120] memfd_create("syzkaller", 0) = 3
[pid 19120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19120] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19120] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19120] close(4)                    = 0
[pid 19120] close(3)                    = 0
[pid 19120] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19120] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19120] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19120] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19120] open("./bus", O_RDONLY)     = 3
[pid 19120] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19120] exit_group(0)               = ?
[pid 19120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19120, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19121 attached
, child_tidptr=0x55555606b5d0) = 19121
[pid 19121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19121] setpgid(0, 0)               = 0
[pid 19121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19121] write(3, "1000", 4)         = 4
[pid 19121] close(3)                    = 0
[pid 19121] memfd_create("syzkaller", 0) = 3
[pid 19121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19121] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19121] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19121] close(4)                    = 0
[pid 19121] close(3)                    = 0
[pid 19121] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19121] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19121] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19121] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19121] open("./bus", O_RDONLY)     = 3
[pid 19121] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19121] exit_group(0)               = ?
[pid 19121] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19121, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19122
./strace-static-x86_64: Process 19122 attached
[pid 19122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19122] setpgid(0, 0)               = 0
[pid 19122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19122] write(3, "1000", 4)         = 4
[pid 19122] close(3)                    = 0
[pid 19122] memfd_create("syzkaller", 0) = 3
[pid 19122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19122] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19122] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19122] close(4)                    = 0
[pid 19122] close(3)                    = 0
[pid 19122] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19122] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19122] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19122] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19122] open("./bus", O_RDONLY)     = 3
[pid 19122] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19122] exit_group(0)               = ?
[pid 19122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19123 attached
, child_tidptr=0x55555606b5d0) = 19123
[pid 19123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19123] setpgid(0, 0)               = 0
[pid 19123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19123] write(3, "1000", 4)         = 4
[pid 19123] close(3)                    = 0
[pid 19123] memfd_create("syzkaller", 0) = 3
[pid 19123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19123] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19123] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19123] close(4)                    = 0
[pid 19123] close(3)                    = 0
[pid 19123] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19123] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19123] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19123] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19123] open("./bus", O_RDONLY)     = 3
[pid 19123] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19123] exit_group(0)               = ?
[pid 19123] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19123, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19124 attached
, child_tidptr=0x55555606b5d0) = 19124
[pid 19124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19124] setpgid(0, 0)               = 0
[pid 19124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19124] write(3, "1000", 4)         = 4
[pid 19124] close(3)                    = 0
[pid 19124] memfd_create("syzkaller", 0) = 3
[pid 19124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19124] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19124] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19124] close(4)                    = 0
[pid 19124] close(3)                    = 0
[pid 19124] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19124] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19124] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19124] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19124] open("./bus", O_RDONLY)     = 3
[pid 19124] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19124] exit_group(0)               = ?
[pid 19124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19125 attached
, child_tidptr=0x55555606b5d0) = 19125
[pid 19125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19125] setpgid(0, 0)               = 0
[pid 19125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19125] write(3, "1000", 4)         = 4
[pid 19125] close(3)                    = 0
[pid 19125] memfd_create("syzkaller", 0) = 3
[pid 19125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19125] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19125] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19125] close(4)                    = 0
[pid 19125] close(3)                    = 0
[pid 19125] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19125] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19125] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19125] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19125] open("./bus", O_RDONLY)     = 3
[pid 19125] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19125] exit_group(0)               = ?
[pid 19125] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19125, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19126
./strace-static-x86_64: Process 19126 attached
[pid 19126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19126] setpgid(0, 0)               = 0
[pid 19126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19126] write(3, "1000", 4)         = 4
[pid 19126] close(3)                    = 0
[pid 19126] memfd_create("syzkaller", 0) = 3
[pid 19126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19126] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19126] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19126] close(4)                    = 0
[pid 19126] close(3)                    = 0
[pid 19126] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19126] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19126] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19126] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19126] open("./bus", O_RDONLY)     = 3
[pid 19126] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19126] exit_group(0)               = ?
[pid 19126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19127 attached
, child_tidptr=0x55555606b5d0) = 19127
[pid 19127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19127] setpgid(0, 0)               = 0
[pid 19127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19127] write(3, "1000", 4)         = 4
[pid 19127] close(3)                    = 0
[pid 19127] memfd_create("syzkaller", 0) = 3
[pid 19127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19127] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19127] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19127] close(4)                    = 0
[pid 19127] close(3)                    = 0
[pid 19127] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19127] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19127] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19127] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19127] open("./bus", O_RDONLY)     = 3
[pid 19127] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19127] exit_group(0)               = ?
[pid 19127] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19127, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19128
./strace-static-x86_64: Process 19128 attached
[pid 19128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19128] setpgid(0, 0)               = 0
[pid 19128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19128] write(3, "1000", 4)         = 4
[pid 19128] close(3)                    = 0
[pid 19128] memfd_create("syzkaller", 0) = 3
[pid 19128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19128] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19128] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19128] close(4)                    = 0
[pid 19128] close(3)                    = 0
[pid 19128] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19128] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19128] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19128] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19128] open("./bus", O_RDONLY)     = 3
[pid 19128] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19128] exit_group(0)               = ?
[pid 19128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19128, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19129 attached
, child_tidptr=0x55555606b5d0) = 19129
[pid 19129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19129] setpgid(0, 0)               = 0
[pid 19129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19129] write(3, "1000", 4)         = 4
[pid 19129] close(3)                    = 0
[pid 19129] memfd_create("syzkaller", 0) = 3
[pid 19129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19129] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19129] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19129] close(4)                    = 0
[pid 19129] close(3)                    = 0
[pid 19129] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19129] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19129] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19129] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19129] open("./bus", O_RDONLY)     = 3
[pid 19129] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19129] exit_group(0)               = ?
[pid 19129] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19129, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19130 attached
, child_tidptr=0x55555606b5d0) = 19130
[pid 19130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19130] setpgid(0, 0)               = 0
[pid 19130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19130] write(3, "1000", 4)         = 4
[pid 19130] close(3)                    = 0
[pid 19130] memfd_create("syzkaller", 0) = 3
[pid 19130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19130] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19130] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19130] close(4)                    = 0
[pid 19130] close(3)                    = 0
[pid 19130] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19130] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19130] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19130] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19130] open("./bus", O_RDONLY)     = 3
[pid 19130] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19130] exit_group(0)               = ?
[pid 19130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19131
./strace-static-x86_64: Process 19131 attached
[pid 19131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19131] setpgid(0, 0)               = 0
[pid 19131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19131] write(3, "1000", 4)         = 4
[pid 19131] close(3)                    = 0
[pid 19131] memfd_create("syzkaller", 0) = 3
[pid 19131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19131] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19131] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19131] close(4)                    = 0
[pid 19131] close(3)                    = 0
[pid 19131] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19131] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19131] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19131] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19131] open("./bus", O_RDONLY)     = 3
[pid 19131] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19131] exit_group(0)               = ?
[pid 19131] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19131, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19132
./strace-static-x86_64: Process 19132 attached
[pid 19132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19132] setpgid(0, 0)               = 0
[pid 19132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19132] write(3, "1000", 4)         = 4
[pid 19132] close(3)                    = 0
[pid 19132] memfd_create("syzkaller", 0) = 3
[pid 19132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19132] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19132] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19132] close(4)                    = 0
[pid 19132] close(3)                    = 0
[pid 19132] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19132] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19132] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19132] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19132] open("./bus", O_RDONLY)     = 3
[pid 19132] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19132] exit_group(0)               = ?
[pid 19132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19132, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19133 attached
, child_tidptr=0x55555606b5d0) = 19133
[pid 19133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19133] setpgid(0, 0)               = 0
[pid 19133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19133] write(3, "1000", 4)         = 4
[pid 19133] close(3)                    = 0
[pid 19133] memfd_create("syzkaller", 0) = 3
[pid 19133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19133] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19133] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19133] close(4)                    = 0
[pid 19133] close(3)                    = 0
[pid 19133] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19133] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19133] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19133] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19133] open("./bus", O_RDONLY)     = 3
[pid 19133] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19133] exit_group(0)               = ?
[pid 19133] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19133, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19134 attached
, child_tidptr=0x55555606b5d0) = 19134
[pid 19134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19134] setpgid(0, 0)               = 0
[pid 19134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19134] write(3, "1000", 4)         = 4
[pid 19134] close(3)                    = 0
[pid 19134] memfd_create("syzkaller", 0) = 3
[pid 19134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19134] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19134] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19134] close(4)                    = 0
[pid 19134] close(3)                    = 0
[pid 19134] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19134] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19134] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19134] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19134] open("./bus", O_RDONLY)     = 3
[pid 19134] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19134] exit_group(0)               = ?
[pid 19134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19135 attached
, child_tidptr=0x55555606b5d0) = 19135
[pid 19135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19135] setpgid(0, 0)               = 0
[pid 19135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19135] write(3, "1000", 4)         = 4
[pid 19135] close(3)                    = 0
[pid 19135] memfd_create("syzkaller", 0) = 3
[pid 19135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19135] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19135] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19135] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19135] close(4)                    = 0
[pid 19135] close(3)                    = 0
[pid 19135] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19135] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19135] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19135] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19135] open("./bus", O_RDONLY)     = 3
[pid 19135] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19135] exit_group(0)               = ?
[pid 19135] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19135, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19136 attached
, child_tidptr=0x55555606b5d0) = 19136
[pid 19136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19136] setpgid(0, 0)               = 0
[pid 19136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19136] write(3, "1000", 4)         = 4
[pid 19136] close(3)                    = 0
[pid 19136] memfd_create("syzkaller", 0) = 3
[pid 19136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19136] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19136] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19136] close(4)                    = 0
[pid 19136] close(3)                    = 0
[pid 19136] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19136] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19136] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19136] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19136] open("./bus", O_RDONLY)     = 3
[pid 19136] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19136] exit_group(0)               = ?
[pid 19136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19137
./strace-static-x86_64: Process 19137 attached
[pid 19137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19137] setpgid(0, 0)               = 0
[pid 19137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19137] write(3, "1000", 4)         = 4
[pid 19137] close(3)                    = 0
[pid 19137] memfd_create("syzkaller", 0) = 3
[pid 19137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19137] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19137] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19137] close(4)                    = 0
[pid 19137] close(3)                    = 0
[pid 19137] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19137] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19137] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19137] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19137] open("./bus", O_RDONLY)     = 3
[pid 19137] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19137] exit_group(0)               = ?
[pid 19137] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19137, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19138
./strace-static-x86_64: Process 19138 attached
[pid 19138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19138] setpgid(0, 0)               = 0
[pid 19138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19138] write(3, "1000", 4)         = 4
[pid 19138] close(3)                    = 0
[pid 19138] memfd_create("syzkaller", 0) = 3
[pid 19138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19138] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19138] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19138] close(4)                    = 0
[pid 19138] close(3)                    = 0
[pid 19138] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19138] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19138] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19138] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19138] open("./bus", O_RDONLY)     = 3
[pid 19138] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19138] exit_group(0)               = ?
[pid 19138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19139 attached
, child_tidptr=0x55555606b5d0) = 19139
[pid 19139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19139] setpgid(0, 0)               = 0
[pid 19139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19139] write(3, "1000", 4)         = 4
[pid 19139] close(3)                    = 0
[pid 19139] memfd_create("syzkaller", 0) = 3
[pid 19139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19139] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19139] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19139] close(4)                    = 0
[pid 19139] close(3)                    = 0
[pid 19139] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19139] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19139] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19139] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19139] open("./bus", O_RDONLY)     = 3
[pid 19139] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19139] exit_group(0)               = ?
[pid 19139] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19139, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19140 attached
, child_tidptr=0x55555606b5d0) = 19140
[pid 19140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19140] setpgid(0, 0)               = 0
[pid 19140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19140] write(3, "1000", 4)         = 4
[pid 19140] close(3)                    = 0
[pid 19140] memfd_create("syzkaller", 0) = 3
[pid 19140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19140] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19140] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19140] close(4)                    = 0
[pid 19140] close(3)                    = 0
[pid 19140] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19140] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19140] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19140] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19140] open("./bus", O_RDONLY)     = 3
[pid 19140] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19140] exit_group(0)               = ?
[pid 19140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19141 attached
, child_tidptr=0x55555606b5d0) = 19141
[pid 19141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19141] setpgid(0, 0)               = 0
[pid 19141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19141] write(3, "1000", 4)         = 4
[pid 19141] close(3)                    = 0
[pid 19141] memfd_create("syzkaller", 0) = 3
[pid 19141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19141] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19141] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19141] close(4)                    = 0
[pid 19141] close(3)                    = 0
[pid 19141] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19141] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19141] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19141] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19141] open("./bus", O_RDONLY)     = 3
[pid 19141] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19141] exit_group(0)               = ?
[pid 19141] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19141, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19142 attached
, child_tidptr=0x55555606b5d0) = 19142
[pid 19142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19142] setpgid(0, 0)               = 0
[pid 19142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19142] write(3, "1000", 4)         = 4
[pid 19142] close(3)                    = 0
[pid 19142] memfd_create("syzkaller", 0) = 3
[pid 19142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19142] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19142] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19142] close(4)                    = 0
[pid 19142] close(3)                    = 0
[pid 19142] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19142] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19142] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19142] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19142] open("./bus", O_RDONLY)     = 3
[pid 19142] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19142] exit_group(0)               = ?
[pid 19142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19143
./strace-static-x86_64: Process 19143 attached
[pid 19143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19143] setpgid(0, 0)               = 0
[pid 19143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19143] write(3, "1000", 4)         = 4
[pid 19143] close(3)                    = 0
[pid 19143] memfd_create("syzkaller", 0) = 3
[pid 19143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19143] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19143] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19143] close(4)                    = 0
[pid 19143] close(3)                    = 0
[pid 19143] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19143] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19143] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19143] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19143] open("./bus", O_RDONLY)     = 3
[pid 19143] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19143] exit_group(0)               = ?
[pid 19143] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19143, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19144
./strace-static-x86_64: Process 19144 attached
[pid 19144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19144] setpgid(0, 0)               = 0
[pid 19144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19144] write(3, "1000", 4)         = 4
[pid 19144] close(3)                    = 0
[pid 19144] memfd_create("syzkaller", 0) = 3
[pid 19144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19144] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19144] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19144] close(4)                    = 0
[pid 19144] close(3)                    = 0
[pid 19144] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19144] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19144] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19144] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19144] open("./bus", O_RDONLY)     = 3
[pid 19144] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19144] exit_group(0)               = ?
[pid 19144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19144, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19145 attached
, child_tidptr=0x55555606b5d0) = 19145
[pid 19145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19145] setpgid(0, 0)               = 0
[pid 19145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19145] write(3, "1000", 4)         = 4
[pid 19145] close(3)                    = 0
[pid 19145] memfd_create("syzkaller", 0) = 3
[pid 19145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19145] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19145] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19145] close(4)                    = 0
[pid 19145] close(3)                    = 0
[pid 19145] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19145] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19145] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19145] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19145] open("./bus", O_RDONLY)     = 3
[pid 19145] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19145] exit_group(0)               = ?
[pid 19145] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19145, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19146 attached
, child_tidptr=0x55555606b5d0) = 19146
[pid 19146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19146] setpgid(0, 0)               = 0
[pid 19146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19146] write(3, "1000", 4)         = 4
[pid 19146] close(3)                    = 0
[pid 19146] memfd_create("syzkaller", 0) = 3
[pid 19146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19146] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19146] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19146] close(4)                    = 0
[pid 19146] close(3)                    = 0
[pid 19146] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19146] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19146] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19146] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19146] open("./bus", O_RDONLY)     = 3
[pid 19146] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19146] exit_group(0)               = ?
[pid 19146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19146, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19147
./strace-static-x86_64: Process 19147 attached
[pid 19147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19147] setpgid(0, 0)               = 0
[pid 19147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19147] write(3, "1000", 4)         = 4
[pid 19147] close(3)                    = 0
[pid 19147] memfd_create("syzkaller", 0) = 3
[pid 19147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19147] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19147] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19147] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19147] close(4)                    = 0
[pid 19147] close(3)                    = 0
[pid 19147] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19147] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19147] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19147] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19147] open("./bus", O_RDONLY)     = 3
[pid 19147] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19147] exit_group(0)               = ?
[pid 19147] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19147, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19148
./strace-static-x86_64: Process 19148 attached
[pid 19148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19148] setpgid(0, 0)               = 0
[pid 19148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19148] write(3, "1000", 4)         = 4
[pid 19148] close(3)                    = 0
[pid 19148] memfd_create("syzkaller", 0) = 3
[pid 19148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19148] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19148] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19148] close(4)                    = 0
[pid 19148] close(3)                    = 0
[pid 19148] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19148] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19148] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19148] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19148] open("./bus", O_RDONLY)     = 3
[pid 19148] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19148] exit_group(0)               = ?
[pid 19148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19149
./strace-static-x86_64: Process 19149 attached
[pid 19149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19149] setpgid(0, 0)               = 0
[pid 19149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19149] write(3, "1000", 4)         = 4
[pid 19149] close(3)                    = 0
[pid 19149] memfd_create("syzkaller", 0) = 3
[pid 19149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19149] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19149] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19149] close(4)                    = 0
[pid 19149] close(3)                    = 0
[pid 19149] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19149] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19149] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19149] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19149] open("./bus", O_RDONLY)     = 3
[pid 19149] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19149] exit_group(0)               = ?
[pid 19149] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19149, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19150
./strace-static-x86_64: Process 19150 attached
[pid 19150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19150] setpgid(0, 0)               = 0
[pid 19150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19150] write(3, "1000", 4)         = 4
[pid 19150] close(3)                    = 0
[pid 19150] memfd_create("syzkaller", 0) = 3
[pid 19150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19150] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19150] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19150] close(4)                    = 0
[pid 19150] close(3)                    = 0
[pid 19150] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19150] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19150] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19150] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19150] open("./bus", O_RDONLY)     = 3
[pid 19150] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19150] exit_group(0)               = ?
[pid 19150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19151
./strace-static-x86_64: Process 19151 attached
[pid 19151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19151] setpgid(0, 0)               = 0
[pid 19151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19151] write(3, "1000", 4)         = 4
[pid 19151] close(3)                    = 0
[pid 19151] memfd_create("syzkaller", 0) = 3
[pid 19151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19151] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19151] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19151] close(4)                    = 0
[pid 19151] close(3)                    = 0
[pid 19151] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19151] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19151] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19151] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19151] open("./bus", O_RDONLY)     = 3
[pid 19151] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19151] exit_group(0)               = ?
[pid 19151] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19151, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19152 attached
, child_tidptr=0x55555606b5d0) = 19152
[pid 19152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19152] setpgid(0, 0)               = 0
[pid 19152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19152] write(3, "1000", 4)         = 4
[pid 19152] close(3)                    = 0
[pid 19152] memfd_create("syzkaller", 0) = 3
[pid 19152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19152] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19152] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19152] close(4)                    = 0
[pid 19152] close(3)                    = 0
[pid 19152] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19152] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19152] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19152] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19152] open("./bus", O_RDONLY)     = 3
[pid 19152] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19152] exit_group(0)               = ?
[pid 19152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19152, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19153 attached
, child_tidptr=0x55555606b5d0) = 19153
[pid 19153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19153] setpgid(0, 0)               = 0
[pid 19153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19153] write(3, "1000", 4)         = 4
[pid 19153] close(3)                    = 0
[pid 19153] memfd_create("syzkaller", 0) = 3
[pid 19153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19153] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19153] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19153] close(4)                    = 0
[pid 19153] close(3)                    = 0
[pid 19153] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19153] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19153] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19153] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19153] open("./bus", O_RDONLY)     = 3
[pid 19153] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19153] exit_group(0)               = ?
[pid 19153] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19153, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19154 attached
 <unfinished ...>
[pid 19154] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19154
[pid 19154] <... prctl resumed>)        = 0
[pid 19154] setpgid(0, 0)               = 0
[pid 19154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19154] write(3, "1000", 4)         = 4
[pid 19154] close(3)                    = 0
[pid 19154] memfd_create("syzkaller", 0) = 3
[pid 19154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19154] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19154] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19154] close(4)                    = 0
[pid 19154] close(3)                    = 0
[pid 19154] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19154] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19154] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19154] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19154] open("./bus", O_RDONLY)     = 3
[pid 19154] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19154] exit_group(0)               = ?
[pid 19154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19155
./strace-static-x86_64: Process 19155 attached
[pid 19155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19155] setpgid(0, 0)               = 0
[pid 19155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19155] write(3, "1000", 4)         = 4
[pid 19155] close(3)                    = 0
[pid 19155] memfd_create("syzkaller", 0) = 3
[pid 19155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19155] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19155] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19155] close(4)                    = 0
[pid 19155] close(3)                    = 0
[pid 19155] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19155] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19155] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19155] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19155] open("./bus", O_RDONLY)     = 3
[pid 19155] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19155] exit_group(0)               = ?
[pid 19155] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19155, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19156 attached
, child_tidptr=0x55555606b5d0) = 19156
[pid 19156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19156] setpgid(0, 0)               = 0
[pid 19156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19156] write(3, "1000", 4)         = 4
[pid 19156] close(3)                    = 0
[pid 19156] memfd_create("syzkaller", 0) = 3
[pid 19156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19156] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19156] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19156] close(4)                    = 0
[pid 19156] close(3)                    = 0
[pid 19156] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19156] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19156] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19156] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19156] open("./bus", O_RDONLY)     = 3
[pid 19156] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19156] exit_group(0)               = ?
[pid 19156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19156, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19157
./strace-static-x86_64: Process 19157 attached
[pid 19157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19157] setpgid(0, 0)               = 0
[pid 19157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19157] write(3, "1000", 4)         = 4
[pid 19157] close(3)                    = 0
[pid 19157] memfd_create("syzkaller", 0) = 3
[pid 19157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19157] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19157] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19157] close(4)                    = 0
[pid 19157] close(3)                    = 0
[pid 19157] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19157] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19157] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19157] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19157] open("./bus", O_RDONLY)     = 3
[pid 19157] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19157] exit_group(0)               = ?
[pid 19157] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19157, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19158 attached
, child_tidptr=0x55555606b5d0) = 19158
[pid 19158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19158] setpgid(0, 0)               = 0
[pid 19158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19158] write(3, "1000", 4)         = 4
[pid 19158] close(3)                    = 0
[pid 19158] memfd_create("syzkaller", 0) = 3
[pid 19158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19158] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19158] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19158] close(4)                    = 0
[pid 19158] close(3)                    = 0
[pid 19158] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19158] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19158] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19158] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19158] open("./bus", O_RDONLY)     = 3
[pid 19158] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19158] exit_group(0)               = ?
[pid 19158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19159
./strace-static-x86_64: Process 19159 attached
[pid 19159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19159] setpgid(0, 0)               = 0
[pid 19159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19159] write(3, "1000", 4)         = 4
[pid 19159] close(3)                    = 0
[pid 19159] memfd_create("syzkaller", 0) = 3
[pid 19159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19159] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19159] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19159] close(4)                    = 0
[pid 19159] close(3)                    = 0
[pid 19159] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19159] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19159] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19159] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19159] open("./bus", O_RDONLY)     = 3
[pid 19159] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19159] exit_group(0)               = ?
[pid 19159] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19159, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19160 attached
, child_tidptr=0x55555606b5d0) = 19160
[pid 19160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19160] setpgid(0, 0)               = 0
[pid 19160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19160] write(3, "1000", 4)         = 4
[pid 19160] close(3)                    = 0
[pid 19160] memfd_create("syzkaller", 0) = 3
[pid 19160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19160] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19160] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19160] close(4)                    = 0
[pid 19160] close(3)                    = 0
[pid 19160] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19160] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19160] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19160] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19160] open("./bus", O_RDONLY)     = 3
[pid 19160] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19160] exit_group(0)               = ?
[pid 19160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19160, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19161 attached
, child_tidptr=0x55555606b5d0) = 19161
[pid 19161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19161] setpgid(0, 0)               = 0
[pid 19161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19161] write(3, "1000", 4)         = 4
[pid 19161] close(3)                    = 0
[pid 19161] memfd_create("syzkaller", 0) = 3
[pid 19161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19161] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19161] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19161] close(4)                    = 0
[pid 19161] close(3)                    = 0
[pid 19161] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19161] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19161] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19161] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19161] open("./bus", O_RDONLY)     = 3
[pid 19161] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19161] exit_group(0)               = ?
[pid 19161] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19161, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19162
./strace-static-x86_64: Process 19162 attached
[pid 19162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19162] setpgid(0, 0)               = 0
[pid 19162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19162] write(3, "1000", 4)         = 4
[pid 19162] close(3)                    = 0
[pid 19162] memfd_create("syzkaller", 0) = 3
[pid 19162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19162] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19162] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19162] close(4)                    = 0
[pid 19162] close(3)                    = 0
[pid 19162] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19162] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19162] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19162] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19162] open("./bus", O_RDONLY)     = 3
[pid 19162] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19162] exit_group(0)               = ?
[pid 19162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19163 attached
, child_tidptr=0x55555606b5d0) = 19163
[pid 19163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19163] setpgid(0, 0)               = 0
[pid 19163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19163] write(3, "1000", 4)         = 4
[pid 19163] close(3)                    = 0
[pid 19163] memfd_create("syzkaller", 0) = 3
[pid 19163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19163] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19163] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19163] close(4)                    = 0
[pid 19163] close(3)                    = 0
[pid 19163] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19163] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19163] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19163] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19163] open("./bus", O_RDONLY)     = 3
[pid 19163] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19163] exit_group(0)               = ?
[pid 19163] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19163, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19164 attached
, child_tidptr=0x55555606b5d0) = 19164
[pid 19164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19164] setpgid(0, 0)               = 0
[pid 19164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19164] write(3, "1000", 4)         = 4
[pid 19164] close(3)                    = 0
[pid 19164] memfd_create("syzkaller", 0) = 3
[pid 19164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19164] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19164] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19164] close(4)                    = 0
[pid 19164] close(3)                    = 0
[pid 19164] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19164] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19164] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19164] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19164] open("./bus", O_RDONLY)     = 3
[pid 19164] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19164] exit_group(0)               = ?
[pid 19164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19165 attached
, child_tidptr=0x55555606b5d0) = 19165
[pid 19165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19165] setpgid(0, 0)               = 0
[pid 19165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19165] write(3, "1000", 4)         = 4
[pid 19165] close(3)                    = 0
[pid 19165] memfd_create("syzkaller", 0) = 3
[pid 19165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19165] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19165] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19165] close(4)                    = 0
[pid 19165] close(3)                    = 0
[pid 19165] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19165] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19165] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19165] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19165] open("./bus", O_RDONLY)     = 3
[pid 19165] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19165] exit_group(0)               = ?
[pid 19165] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19165, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19166 attached
, child_tidptr=0x55555606b5d0) = 19166
[pid 19166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19166] setpgid(0, 0)               = 0
[pid 19166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19166] write(3, "1000", 4)         = 4
[pid 19166] close(3)                    = 0
[pid 19166] memfd_create("syzkaller", 0) = 3
[pid 19166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19166] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19166] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19166] close(4)                    = 0
[pid 19166] close(3)                    = 0
[pid 19166] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19166] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19166] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19166] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19166] open("./bus", O_RDONLY)     = 3
[pid 19166] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19166] exit_group(0)               = ?
[pid 19166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19166, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19167 attached
, child_tidptr=0x55555606b5d0) = 19167
[pid 19167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19167] setpgid(0, 0)               = 0
[pid 19167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19167] write(3, "1000", 4)         = 4
[pid 19167] close(3)                    = 0
[pid 19167] memfd_create("syzkaller", 0) = 3
[pid 19167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19167] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19167] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19167] close(4)                    = 0
[pid 19167] close(3)                    = 0
[pid 19167] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19167] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19167] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19167] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19167] open("./bus", O_RDONLY)     = 3
[pid 19167] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19167] exit_group(0)               = ?
[pid 19167] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19167, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19168 attached
 <unfinished ...>
[pid 19168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19168] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19168
[pid 19168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19168] write(3, "1000", 4)         = 4
[pid 19168] close(3)                    = 0
[pid 19168] memfd_create("syzkaller", 0) = 3
[pid 19168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19168] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19168] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19168] close(4)                    = 0
[pid 19168] close(3)                    = 0
[pid 19168] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19168] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19168] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19168] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19168] open("./bus", O_RDONLY)     = 3
[pid 19168] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19168] exit_group(0)               = ?
[pid 19168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19169 attached
, child_tidptr=0x55555606b5d0) = 19169
[pid 19169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19169] setpgid(0, 0)               = 0
[pid 19169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19169] write(3, "1000", 4)         = 4
[pid 19169] close(3)                    = 0
[pid 19169] memfd_create("syzkaller", 0) = 3
[pid 19169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19169] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19169] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19169] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19169] close(4)                    = 0
[pid 19169] close(3)                    = 0
[pid 19169] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19169] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19169] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19169] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19169] open("./bus", O_RDONLY)     = 3
[pid 19169] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19169] exit_group(0)               = ?
[pid 19169] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19169, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19170 attached
, child_tidptr=0x55555606b5d0) = 19170
[pid 19170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19170] setpgid(0, 0)               = 0
[pid 19170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19170] write(3, "1000", 4)         = 4
[pid 19170] close(3)                    = 0
[pid 19170] memfd_create("syzkaller", 0) = 3
[pid 19170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19170] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19170] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19170] close(4)                    = 0
[pid 19170] close(3)                    = 0
[pid 19170] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19170] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19170] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19170] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19170] open("./bus", O_RDONLY)     = 3
[pid 19170] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19170] exit_group(0)               = ?
[pid 19170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19171
./strace-static-x86_64: Process 19171 attached
[pid 19171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19171] setpgid(0, 0)               = 0
[pid 19171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19171] write(3, "1000", 4)         = 4
[pid 19171] close(3)                    = 0
[pid 19171] memfd_create("syzkaller", 0) = 3
[pid 19171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19171] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19171] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19171] close(4)                    = 0
[pid 19171] close(3)                    = 0
[pid 19171] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19171] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19171] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19171] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19171] open("./bus", O_RDONLY)     = 3
[pid 19171] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19171] exit_group(0)               = ?
[pid 19171] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19171, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19172 attached
 <unfinished ...>
[pid 19172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19172
[pid 19172] setpgid(0, 0)               = 0
[pid 19172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19172] write(3, "1000", 4)         = 4
[pid 19172] close(3)                    = 0
[pid 19172] memfd_create("syzkaller", 0) = 3
[pid 19172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19172] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19172] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19172] close(4)                    = 0
[pid 19172] close(3)                    = 0
[pid 19172] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19172] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19172] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19172] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19172] open("./bus", O_RDONLY)     = 3
[pid 19172] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19172] exit_group(0)               = ?
[pid 19172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19173 attached
, child_tidptr=0x55555606b5d0) = 19173
[pid 19173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19173] setpgid(0, 0)               = 0
[pid 19173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19173] write(3, "1000", 4)         = 4
[pid 19173] close(3)                    = 0
[pid 19173] memfd_create("syzkaller", 0) = 3
[pid 19173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19173] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19173] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19173] close(4)                    = 0
[pid 19173] close(3)                    = 0
[pid 19173] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19173] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19173] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19173] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19173] open("./bus", O_RDONLY)     = 3
[pid 19173] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19173] exit_group(0)               = ?
[pid 19173] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19173, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19174 attached
, child_tidptr=0x55555606b5d0) = 19174
[pid 19174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19174] setpgid(0, 0)               = 0
[pid 19174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19174] write(3, "1000", 4)         = 4
[pid 19174] close(3)                    = 0
[pid 19174] memfd_create("syzkaller", 0) = 3
[pid 19174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19174] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19174] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19174] close(4)                    = 0
[pid 19174] close(3)                    = 0
[pid 19174] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19174] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19174] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19174] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19174] open("./bus", O_RDONLY)     = 3
[pid 19174] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19174] exit_group(0)               = ?
[pid 19174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19175 attached
, child_tidptr=0x55555606b5d0) = 19175
[pid 19175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19175] setpgid(0, 0)               = 0
[pid 19175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19175] write(3, "1000", 4)         = 4
[pid 19175] close(3)                    = 0
[pid 19175] memfd_create("syzkaller", 0) = 3
[pid 19175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19175] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19175] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19175] close(4)                    = 0
[pid 19175] close(3)                    = 0
[pid 19175] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19175] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19175] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19175] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19175] open("./bus", O_RDONLY)     = 3
[pid 19175] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19175] exit_group(0)               = ?
[pid 19175] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19175, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19176 attached
, child_tidptr=0x55555606b5d0) = 19176
[pid 19176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19176] setpgid(0, 0)               = 0
[pid 19176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19176] write(3, "1000", 4)         = 4
[pid 19176] close(3)                    = 0
[pid 19176] memfd_create("syzkaller", 0) = 3
[pid 19176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19176] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19176] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19176] close(4)                    = 0
[pid 19176] close(3)                    = 0
[pid 19176] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19176] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19176] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19176] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19176] open("./bus", O_RDONLY)     = 3
[pid 19176] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19176] exit_group(0)               = ?
[pid 19176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19176, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19177
./strace-static-x86_64: Process 19177 attached
[pid 19177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19177] setpgid(0, 0)               = 0
[pid 19177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19177] write(3, "1000", 4)         = 4
[pid 19177] close(3)                    = 0
[pid 19177] memfd_create("syzkaller", 0) = 3
[pid 19177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19177] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19177] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19177] close(4)                    = 0
[pid 19177] close(3)                    = 0
[pid 19177] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19177] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19177] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19177] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19177] open("./bus", O_RDONLY)     = 3
[pid 19177] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19177] exit_group(0)               = ?
[pid 19177] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19177, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19178
./strace-static-x86_64: Process 19178 attached
[pid 19178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19178] setpgid(0, 0)               = 0
[pid 19178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19178] write(3, "1000", 4)         = 4
[pid 19178] close(3)                    = 0
[pid 19178] memfd_create("syzkaller", 0) = 3
[pid 19178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19178] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19178] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19178] close(4)                    = 0
[pid 19178] close(3)                    = 0
[pid 19178] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19178] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19178] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19178] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19178] open("./bus", O_RDONLY)     = 3
[pid 19178] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19178] exit_group(0)               = ?
[pid 19178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19179
./strace-static-x86_64: Process 19179 attached
[pid 19179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19179] setpgid(0, 0)               = 0
[pid 19179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19179] write(3, "1000", 4)         = 4
[pid 19179] close(3)                    = 0
[pid 19179] memfd_create("syzkaller", 0) = 3
[pid 19179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19179] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19179] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19179] close(4)                    = 0
[pid 19179] close(3)                    = 0
[pid 19179] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19179] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19179] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19179] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19179] open("./bus", O_RDONLY)     = 3
[pid 19179] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19179] exit_group(0)               = ?
[pid 19179] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19179, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19180
./strace-static-x86_64: Process 19180 attached
[pid 19180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19180] setpgid(0, 0)               = 0
[pid 19180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19180] write(3, "1000", 4)         = 4
[pid 19180] close(3)                    = 0
[pid 19180] memfd_create("syzkaller", 0) = 3
[pid 19180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19180] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19180] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19180] close(4)                    = 0
[pid 19180] close(3)                    = 0
[pid 19180] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19180] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19180] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19180] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19180] open("./bus", O_RDONLY)     = 3
[pid 19180] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19180] exit_group(0)               = ?
[pid 19180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19180, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19181 attached
, child_tidptr=0x55555606b5d0) = 19181
[pid 19181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19181] setpgid(0, 0)               = 0
[pid 19181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19181] write(3, "1000", 4)         = 4
[pid 19181] close(3)                    = 0
[pid 19181] memfd_create("syzkaller", 0) = 3
[pid 19181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19181] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19181] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19181] close(4)                    = 0
[pid 19181] close(3)                    = 0
[pid 19181] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19181] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19181] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19181] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19181] open("./bus", O_RDONLY)     = 3
[pid 19181] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19181] exit_group(0)               = ?
[pid 19181] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19181, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19182 attached
, child_tidptr=0x55555606b5d0) = 19182
[pid 19182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19182] setpgid(0, 0)               = 0
[pid 19182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19182] write(3, "1000", 4)         = 4
[pid 19182] close(3)                    = 0
[pid 19182] memfd_create("syzkaller", 0) = 3
[pid 19182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19182] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19182] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19182] close(4)                    = 0
[pid 19182] close(3)                    = 0
[pid 19182] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19182] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19182] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19182] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19182] open("./bus", O_RDONLY)     = 3
[pid 19182] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19182] exit_group(0)               = ?
[pid 19182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19183 attached
, child_tidptr=0x55555606b5d0) = 19183
[pid 19183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19183] setpgid(0, 0)               = 0
[pid 19183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19183] write(3, "1000", 4)         = 4
[pid 19183] close(3)                    = 0
[pid 19183] memfd_create("syzkaller", 0) = 3
[pid 19183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19183] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19183] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19183] close(4)                    = 0
[pid 19183] close(3)                    = 0
[pid 19183] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19183] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19183] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19183] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19183] open("./bus", O_RDONLY)     = 3
[pid 19183] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19183] exit_group(0)               = ?
[pid 19183] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19183, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19184 attached
, child_tidptr=0x55555606b5d0) = 19184
[pid 19184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19184] setpgid(0, 0)               = 0
[pid 19184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19184] write(3, "1000", 4)         = 4
[pid 19184] close(3)                    = 0
[pid 19184] memfd_create("syzkaller", 0) = 3
[pid 19184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19184] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19184] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19184] close(4)                    = 0
[pid 19184] close(3)                    = 0
[pid 19184] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19184] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19184] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19184] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19184] open("./bus", O_RDONLY)     = 3
[pid 19184] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19184] exit_group(0)               = ?
[pid 19184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19185 attached
, child_tidptr=0x55555606b5d0) = 19185
[pid 19185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19185] setpgid(0, 0)               = 0
[pid 19185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19185] write(3, "1000", 4)         = 4
[pid 19185] close(3)                    = 0
[pid 19185] memfd_create("syzkaller", 0) = 3
[pid 19185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19185] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19185] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19185] close(4)                    = 0
[pid 19185] close(3)                    = 0
[pid 19185] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19185] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19185] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19185] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19185] open("./bus", O_RDONLY)     = 3
[pid 19185] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19185] exit_group(0)               = ?
[pid 19185] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19185, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19186 attached
, child_tidptr=0x55555606b5d0) = 19186
[pid 19186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19186] setpgid(0, 0)               = 0
[pid 19186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19186] write(3, "1000", 4)         = 4
[pid 19186] close(3)                    = 0
[pid 19186] memfd_create("syzkaller", 0) = 3
[pid 19186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19186] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19186] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19186] close(4)                    = 0
[pid 19186] close(3)                    = 0
[pid 19186] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19186] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19186] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19186] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19186] open("./bus", O_RDONLY)     = 3
[pid 19186] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19186] exit_group(0)               = ?
[pid 19186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19186, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19187
./strace-static-x86_64: Process 19187 attached
[pid 19187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19187] setpgid(0, 0)               = 0
[pid 19187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19187] write(3, "1000", 4)         = 4
[pid 19187] close(3)                    = 0
[pid 19187] memfd_create("syzkaller", 0) = 3
[pid 19187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19187] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19187] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19187] close(4)                    = 0
[pid 19187] close(3)                    = 0
[pid 19187] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19187] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19187] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19187] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19187] open("./bus", O_RDONLY)     = 3
[pid 19187] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19187] exit_group(0)               = ?
[pid 19187] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19187, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19188
./strace-static-x86_64: Process 19188 attached
[pid 19188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19188] setpgid(0, 0)               = 0
[pid 19188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19188] write(3, "1000", 4)         = 4
[pid 19188] close(3)                    = 0
[pid 19188] memfd_create("syzkaller", 0) = 3
[pid 19188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19188] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19188] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19188] close(4)                    = 0
[pid 19188] close(3)                    = 0
[pid 19188] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19188] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19188] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19188] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19188] open("./bus", O_RDONLY)     = 3
[pid 19188] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19188] exit_group(0)               = ?
[pid 19188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19189 attached
, child_tidptr=0x55555606b5d0) = 19189
[pid 19189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19189] setpgid(0, 0)               = 0
[pid 19189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19189] write(3, "1000", 4)         = 4
[pid 19189] close(3)                    = 0
[pid 19189] memfd_create("syzkaller", 0) = 3
[pid 19189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19189] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19189] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19189] close(4)                    = 0
[pid 19189] close(3)                    = 0
[pid 19189] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19189] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19189] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19189] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19189] open("./bus", O_RDONLY)     = 3
[pid 19189] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19189] exit_group(0)               = ?
[pid 19189] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19189, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19190 attached
, child_tidptr=0x55555606b5d0) = 19190
[pid 19190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19190] setpgid(0, 0)               = 0
[pid 19190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19190] write(3, "1000", 4)         = 4
[pid 19190] close(3)                    = 0
[pid 19190] memfd_create("syzkaller", 0) = 3
[pid 19190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19190] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19190] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19190] close(4)                    = 0
[pid 19190] close(3)                    = 0
[pid 19190] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19190] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19190] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19190] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19190] open("./bus", O_RDONLY)     = 3
[pid 19190] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19190] exit_group(0)               = ?
[pid 19190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19191 attached
, child_tidptr=0x55555606b5d0) = 19191
[pid 19191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19191] setpgid(0, 0)               = 0
[pid 19191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19191] write(3, "1000", 4)         = 4
[pid 19191] close(3)                    = 0
[pid 19191] memfd_create("syzkaller", 0) = 3
[pid 19191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19191] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19191] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19191] close(4)                    = 0
[pid 19191] close(3)                    = 0
[pid 19191] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19191] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19191] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19191] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19191] open("./bus", O_RDONLY)     = 3
[pid 19191] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19191] exit_group(0)               = ?
[pid 19191] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19191, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19192
./strace-static-x86_64: Process 19192 attached
[pid 19192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19192] setpgid(0, 0)               = 0
[pid 19192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19192] write(3, "1000", 4)         = 4
[pid 19192] close(3)                    = 0
[pid 19192] memfd_create("syzkaller", 0) = 3
[pid 19192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19192] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19192] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19192] close(4)                    = 0
[pid 19192] close(3)                    = 0
[pid 19192] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19192] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19192] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19192] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19192] open("./bus", O_RDONLY)     = 3
[pid 19192] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19192] exit_group(0)               = ?
[pid 19192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19193 attached
, child_tidptr=0x55555606b5d0) = 19193
[pid 19193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19193] setpgid(0, 0)               = 0
[pid 19193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19193] write(3, "1000", 4)         = 4
[pid 19193] close(3)                    = 0
[pid 19193] memfd_create("syzkaller", 0) = 3
[pid 19193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19193] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19193] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19193] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19193] close(4)                    = 0
[pid 19193] close(3)                    = 0
[pid 19193] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19193] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19193] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19193] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19193] open("./bus", O_RDONLY)     = 3
[pid 19193] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19193] exit_group(0)               = ?
[pid 19193] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19193, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19194 attached
, child_tidptr=0x55555606b5d0) = 19194
[pid 19194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19194] setpgid(0, 0)               = 0
[pid 19194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19194] write(3, "1000", 4)         = 4
[pid 19194] close(3)                    = 0
[pid 19194] memfd_create("syzkaller", 0) = 3
[pid 19194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19194] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19194] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19194] close(4)                    = 0
[pid 19194] close(3)                    = 0
[pid 19194] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19194] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19194] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19194] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19194] open("./bus", O_RDONLY)     = 3
[pid 19194] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19194] exit_group(0)               = ?
[pid 19194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19194, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19195 attached
, child_tidptr=0x55555606b5d0) = 19195
[pid 19195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19195] setpgid(0, 0)               = 0
[pid 19195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19195] write(3, "1000", 4)         = 4
[pid 19195] close(3)                    = 0
[pid 19195] memfd_create("syzkaller", 0) = 3
[pid 19195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19195] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19195] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19195] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19195] close(4)                    = 0
[pid 19195] close(3)                    = 0
[pid 19195] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19195] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19195] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19195] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19195] open("./bus", O_RDONLY)     = 3
[pid 19195] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19195] exit_group(0)               = ?
[pid 19195] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19195, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19196 attached
, child_tidptr=0x55555606b5d0) = 19196
[pid 19196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19196] setpgid(0, 0)               = 0
[pid 19196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19196] write(3, "1000", 4)         = 4
[pid 19196] close(3)                    = 0
[pid 19196] memfd_create("syzkaller", 0) = 3
[pid 19196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19196] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19196] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19196] close(4)                    = 0
[pid 19196] close(3)                    = 0
[pid 19196] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19196] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19196] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19196] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19196] open("./bus", O_RDONLY)     = 3
[pid 19196] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19196] exit_group(0)               = ?
[pid 19196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19197
./strace-static-x86_64: Process 19197 attached
[pid 19197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19197] setpgid(0, 0)               = 0
[pid 19197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19197] write(3, "1000", 4)         = 4
[pid 19197] close(3)                    = 0
[pid 19197] memfd_create("syzkaller", 0) = 3
[pid 19197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19197] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19197] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19197] close(4)                    = 0
[pid 19197] close(3)                    = 0
[pid 19197] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19197] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19197] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19197] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19197] open("./bus", O_RDONLY)     = 3
[pid 19197] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19197] exit_group(0)               = ?
[pid 19197] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19197, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19198
./strace-static-x86_64: Process 19198 attached
[pid 19198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19198] setpgid(0, 0)               = 0
[pid 19198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19198] write(3, "1000", 4)         = 4
[pid 19198] close(3)                    = 0
[pid 19198] memfd_create("syzkaller", 0) = 3
[pid 19198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19198] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19198] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19198] close(4)                    = 0
[pid 19198] close(3)                    = 0
[pid 19198] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19198] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19198] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19198] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19198] open("./bus", O_RDONLY)     = 3
[pid 19198] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19198] exit_group(0)               = ?
[pid 19198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19198, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19199
./strace-static-x86_64: Process 19199 attached
[pid 19199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19199] setpgid(0, 0)               = 0
[pid 19199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19199] write(3, "1000", 4)         = 4
[pid 19199] close(3)                    = 0
[pid 19199] memfd_create("syzkaller", 0) = 3
[pid 19199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19199] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19199] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19199] close(4)                    = 0
[pid 19199] close(3)                    = 0
[pid 19199] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19199] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19199] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19199] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19199] open("./bus", O_RDONLY)     = 3
[pid 19199] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19199] exit_group(0)               = ?
[pid 19199] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19199, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19200 attached
, child_tidptr=0x55555606b5d0) = 19200
[pid 19200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19200] setpgid(0, 0)               = 0
[pid 19200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19200] write(3, "1000", 4)         = 4
[pid 19200] close(3)                    = 0
[pid 19200] memfd_create("syzkaller", 0) = 3
[pid 19200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19200] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19200] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19200] close(4)                    = 0
[pid 19200] close(3)                    = 0
[pid 19200] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19200] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19200] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19200] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19200] open("./bus", O_RDONLY)     = 3
[pid 19200] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19200] exit_group(0)               = ?
[pid 19200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19200, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19201 attached
 <unfinished ...>
[pid 19201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19201] setpgid(0, 0)               = 0
[pid  5074] <... clone resumed>, child_tidptr=0x55555606b5d0) = 19201
[pid 19201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19201] write(3, "1000", 4)         = 4
[pid 19201] close(3)                    = 0
[pid 19201] memfd_create("syzkaller", 0) = 3
[pid 19201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19201] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19201] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19201] close(4)                    = 0
[pid 19201] close(3)                    = 0
[pid 19201] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19201] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19201] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19201] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19201] open("./bus", O_RDONLY)     = 3
[pid 19201] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19201] exit_group(0)               = ?
[pid 19201] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19201, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19202
./strace-static-x86_64: Process 19202 attached
[pid 19202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19202] setpgid(0, 0)               = 0
[pid 19202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19202] write(3, "1000", 4)         = 4
[pid 19202] close(3)                    = 0
[pid 19202] memfd_create("syzkaller", 0) = 3
[pid 19202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19202] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19202] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19202] close(4)                    = 0
[pid 19202] close(3)                    = 0
[pid 19202] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19202] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19202] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19202] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19202] open("./bus", O_RDONLY)     = 3
[pid 19202] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19202] exit_group(0)               = ?
[pid 19202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19203
./strace-static-x86_64: Process 19203 attached
[pid 19203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19203] setpgid(0, 0)               = 0
[pid 19203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19203] write(3, "1000", 4)         = 4
[pid 19203] close(3)                    = 0
[pid 19203] memfd_create("syzkaller", 0) = 3
[pid 19203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19203] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19203] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19203] close(4)                    = 0
[pid 19203] close(3)                    = 0
[pid 19203] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19203] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19203] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19203] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19203] open("./bus", O_RDONLY)     = 3
[pid 19203] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19203] exit_group(0)               = ?
[pid 19203] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19203, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19204
./strace-static-x86_64: Process 19204 attached
[pid 19204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19204] setpgid(0, 0)               = 0
[pid 19204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19204] write(3, "1000", 4)         = 4
[pid 19204] close(3)                    = 0
[pid 19204] memfd_create("syzkaller", 0) = 3
[pid 19204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19204] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19204] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19204] close(4)                    = 0
[pid 19204] close(3)                    = 0
[pid 19204] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19204] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19204] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19204] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19204] open("./bus", O_RDONLY)     = 3
[pid 19204] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19204] exit_group(0)               = ?
[pid 19204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19205
./strace-static-x86_64: Process 19205 attached
[pid 19205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19205] setpgid(0, 0)               = 0
[pid 19205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19205] write(3, "1000", 4)         = 4
[pid 19205] close(3)                    = 0
[pid 19205] memfd_create("syzkaller", 0) = 3
[pid 19205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19205] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19205] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19205] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19205] close(4)                    = 0
[pid 19205] close(3)                    = 0
[pid 19205] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19205] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19205] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19205] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19205] open("./bus", O_RDONLY)     = 3
[pid 19205] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19205] exit_group(0)               = ?
[pid 19205] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19205, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19206
./strace-static-x86_64: Process 19206 attached
[pid 19206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19206] setpgid(0, 0)               = 0
[pid 19206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19206] write(3, "1000", 4)         = 4
[pid 19206] close(3)                    = 0
[pid 19206] memfd_create("syzkaller", 0) = 3
[pid 19206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19206] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19206] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19206] close(4)                    = 0
[pid 19206] close(3)                    = 0
[pid 19206] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19206] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19206] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19206] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19206] open("./bus", O_RDONLY)     = 3
[pid 19206] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19206] exit_group(0)               = ?
[pid 19206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19206, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19207
./strace-static-x86_64: Process 19207 attached
[pid 19207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19207] setpgid(0, 0)               = 0
[pid 19207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19207] write(3, "1000", 4)         = 4
[pid 19207] close(3)                    = 0
[pid 19207] memfd_create("syzkaller", 0) = 3
[pid 19207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19207] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19207] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19207] close(4)                    = 0
[pid 19207] close(3)                    = 0
[pid 19207] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19207] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19207] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19207] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19207] open("./bus", O_RDONLY)     = 3
[pid 19207] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19207] exit_group(0)               = ?
[pid 19207] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19207, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19208 attached
, child_tidptr=0x55555606b5d0) = 19208
[pid 19208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19208] setpgid(0, 0)               = 0
[pid 19208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19208] write(3, "1000", 4)         = 4
[pid 19208] close(3)                    = 0
[pid 19208] memfd_create("syzkaller", 0) = 3
[pid 19208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19208] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19208] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19208] close(4)                    = 0
[pid 19208] close(3)                    = 0
[pid 19208] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19208] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19208] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19208] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19208] open("./bus", O_RDONLY)     = 3
[pid 19208] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19208] exit_group(0)               = ?
[pid 19208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19209
./strace-static-x86_64: Process 19209 attached
[pid 19209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19209] setpgid(0, 0)               = 0
[pid 19209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19209] write(3, "1000", 4)         = 4
[pid 19209] close(3)                    = 0
[pid 19209] memfd_create("syzkaller", 0) = 3
[pid 19209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19209] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19209] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19209] close(4)                    = 0
[pid 19209] close(3)                    = 0
[pid 19209] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 19209] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19209] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19209] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19209] open("./bus", O_RDONLY)     = 3
[pid 19209] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19209] exit_group(0)               = ?
[pid 19209] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19209, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 19210 attached
, child_tidptr=0x55555606b5d0) = 19210
[pid 19210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19210] setpgid(0, 0)               = 0
[pid 19210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19210] write(3, "1000", 4)         = 4
[pid 19210] close(3)                    = 0
[pid 19210] memfd_create("syzkaller", 0) = 3
[pid 19210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19210] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19210] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19210] close(4)                    = 0
[pid 19210] close(3)                    = 0
[pid 19210] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  285.440203][   T28] INFO: task kworker/1:2:893 blocked for more than 143 seconds.
[  285.448000][   T28]       Not tainted 6.3.0-rc3-syzkaller-00026-gfff5a5e7f528 #0
[  285.455687][   T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  285.464555][   T28] task:kworker/1:2     state:D stack:27816 pid:893   ppid:2      flags:0x00004000
[  285.473890][   T28] Workqueue: events_long flush_mdb
[  285.479070][   T28] Call Trace:
[  285.482400][   T28]  <TASK>
[  285.485348][   T28]  __schedule+0xc91/0x5770
[  285.489778][   T28]  ? __lock_acquire+0x18bc/0x5d40
[  285.494895][   T28]  ? io_schedule_timeout+0x150/0x150
[  285.500244][   T28]  ? _raw_spin_unlock_irq+0x23/0x50
[  285.505484][   T28]  ? lockdep_hardirqs_on+0x7d/0x100
[  285.510764][   T28]  schedule+0xde/0x1a0
[  285.514846][   T28]  io_schedule+0xbe/0x130
[  285.519171][   T28]  bit_wait_io+0x16/0xe0
[  285.523486][   T28]  __wait_on_bit_lock+0x11f/0x1a0
[  285.528528][   T28]  ? out_of_line_wait_on_bit_timeout+0x170/0x170
[  285.534934][   T28]  out_of_line_wait_on_bit_lock+0xd9/0x110
[  285.540885][   T28]  ? __wait_on_bit_lock+0x1a0/0x1a0
[  285.546073][   T28]  ? cpuacct_css_alloc+0x160/0x160
[  285.551270][   T28]  __lock_buffer+0x66/0x70
[  285.555710][   T28]  hfs_mdb_commit+0x999/0x1280
[  285.560545][   T28]  process_one_work+0x991/0x15c0
[  285.565505][   T28]  ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[  285.571042][   T28]  ? spin_bug+0x1c0/0x1c0
[  285.575569][   T28]  ? _raw_spin_lock_irq+0x45/0x50
[  285.580649][   T28]  worker_thread+0x669/0x1090
[  285.585354][   T28]  ? __kthread_parkme+0x163/0x220
[pid 19210] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19210] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19210] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19210] open("./bus", O_RDONLY)     = 3
[pid 19210] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19210] exit_group(0)               = ?
[pid 19210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19210, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19211
./strace-static-x86_64: Process 19211 attached
[pid 19211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19211] setpgid(0, 0)               = 0
[pid 19211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19211] write(3, "1000", 4)         = 4
[pid 19211] close(3)                    = 0
[pid 19211] memfd_create("syzkaller", 0) = 3
[pid 19211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[pid 19211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19211] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19211] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19211] close(4)                    = 0
[pid 19211] close(3)                    = 0
[pid 19211] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  285.590467][   T28]  ? process_one_work+0x15c0/0x15c0
[  285.595683][   T28]  kthread+0x2e8/0x3a0
[  285.599740][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  285.605417][   T28]  ret_from_fork+0x1f/0x30
[  285.609899][   T28]  </TASK>
[  285.613081][   T28] 
[  285.613081][   T28] Showing all locks held in the system:
[  285.621125][   T28] 1 lock held by rcu_tasks_kthre/12:
[  285.626418][   T28]  #0: ffffffff8c794b70 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80
[  285.637051][   T28] 1 lock held by rcu_tasks_trace/13:
[  285.642389][   T28]  #0: ffffffff8c794870 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80
[  285.653399][   T28] 2 locks held by kworker/0:1/14:
[  285.658416][   T28]  #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0
[  285.668844][   T28]  #1: ffffc90000137da8 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0
[  285.680500][   T28] 1 lock held by khungtaskd/28:
[  285.685332][   T28]  #0: ffffffff8c7956c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340
[  285.695336][   T28] 2 locks held by kworker/1:2/893:
[  285.700586][   T28]  #0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x87a/0x15c0
[  285.711482][   T28]  #1: ffffc90004a1fda8 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x15c0
[  285.723773][   T28] 2 locks held by getty/4753:
[  285.728458][   T28]  #0: ffff88802798d098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80
[pid 19211] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 19211] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 19211] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 19211] open("./bus", O_RDONLY)     = 3
[pid 19211] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 19211] exit_group(0)               = ?
[pid 19211] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=19211, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555606b5d0) = 19212
./strace-static-x86_64: Process 19212 attached
[pid 19212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 19212] setpgid(0, 0)               = 0
[pid 19212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 19212] write(3, "1000", 4)         = 4
[pid 19212] close(3)                    = 0
[pid 19212] memfd_create("syzkaller", 0) = 3
[pid 19212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f4abd7ae000
[  285.738399][   T28]  #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0
[  285.748663][   T28] 2 locks held by syz-executor319/19211:
[  285.754336][   T28]  #0: ffff88801e088fa8 (&type->i_mutex_dir_key#6){+.+.}-{3:3}, at: lock_mount+0x8a/0x2e0
[  285.764432][   T28]  #1: ffffffff8c7a09b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770
[  285.775398][   T28] 
[  285.777744][   T28] =============================================
[  285.777744][   T28] 
[  285.786422][   T28] NMI backtrace for cpu 1
[pid 19212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 19212] munmap(0x7f4abd7ae000, 32768) = 0
[pid 19212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 19212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19212] ioctl(4, LOOP_CLR_FD)       = 0
[pid 19212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 19212] close(4)                    = 0
[pid 19212] close(3)                    = 0
[pid 19212] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  285.790761][   T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller-00026-gfff5a5e7f528 #0
[  285.800574][   T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[  285.810647][   T28] Call Trace:
[  285.813911][   T28]  <TASK>
[  285.816829][   T28]  dump_stack_lvl+0xd9/0x150
[  285.821436][   T28]  nmi_cpu_backtrace+0x29c/0x350
[  285.826465][   T28]  ? lapic_can_unplug_cpu+0xa0/0xa0
[  285.831648][   T28]  nmi_trigger_cpumask_backtrace+0x2a4/0x300
[  285.837624][   T28]  watchdog+0xe16/0x1090
[  285.841959][   T28]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  285.847928][   T28]  kthread+0x2e8/0x3a0
[  285.851983][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  285.857605][   T28]  ret_from_fork+0x1f/0x30
[  285.862026][   T28]  </TASK>
[  285.865154][   T28] Sending NMI from CPU 1 to CPUs 0:
[  285.870408][    C0] NMI backtrace for cpu 0
[  285.870415][    C0] CPU: 0 PID: 5071 Comm: strace-static-x Not tainted 6.3.0-rc3-syzkaller-00026-gfff5a5e7f528 #0
[  285.870427][    C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[  285.870433][    C0] RIP: 0010:lock_acquire+0x66/0x520
[  285.870449][    C0] Code: b3 8a b5 41 48 c1 eb 03 48 c7 44 24 18 67 bc ff 8b 48 01 d8 48 c7 44 24 20 e0 b8 64 81 c7 00 f1 f1 f1 f1 c7 40 04 f1 f1 00 00 <c7> 40 08 00 00 00 f3 c7 40 0c f3 f3 f3 f3 65 48 8b 04 25 28 00 00
[  285.870459][    C0] RSP: 0018:ffffc90003c1fb40 EFLAGS: 00000086
[  285.870469][    C0] RAX: fffff52000783f6a RBX: 1ffff92000783f6a RCX: 0000000000000000
[  285.870476][    C0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880b983c298
[  285.870482][    C0] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
[  285.870489][    C0] R10: ffffed1003e9e42d R11: 0000000000000001 R12: 0000000000000000
[  285.870495][    C0] R13: 0000000000000000 R14: ffff8880b983c298 R15: 0000000000000000
[  285.870504][    C0] FS:  0000000000dcf3c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
[  285.870515][    C0] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  285.870522][    C0] CR2: 00007f4ac5c312d0 CR3: 000000002936d000 CR4: 0000000000350ef0
[  285.870529][    C0] Call Trace:
[  285.870532][    C0]  <TASK>
[  285.870536][    C0]  ? lock_release+0x670/0x670
[  285.870549][    C0]  ? select_task_rq_fair+0x470/0x4020
[  285.870568][    C0]  _raw_spin_lock_nested+0x34/0x40
[  285.870585][    C0]  ? raw_spin_rq_lock_nested+0x2f/0x120
[  285.870603][    C0]  raw_spin_rq_lock_nested+0x2f/0x120
[  285.870627][    C0]  try_to_wake_up+0xc3a/0x1c40
[  285.870641][    C0]  ? do_raw_spin_lock+0x124/0x2b0
[  285.870653][    C0]  ? sched_core_balance+0x1130/0x1130
[  285.870665][    C0]  ? spin_bug+0x1c0/0x1c0
[  285.870676][    C0]  ? _raw_spin_lock_irq+0x45/0x50
[  285.870692][    C0]  ptrace_request+0x9ae/0x1240
[  285.870709][    C0]  ? ptrace_writedata+0x1b0/0x1b0
[  285.870724][    C0]  ? _raw_spin_unlock_irqrestore+0x54/0x70
[  285.870742][    C0]  ? lockdep_hardirqs_on+0x7d/0x100
[  285.870756][    C0]  ? _raw_spin_unlock_irqrestore+0x41/0x70
[  285.870772][    C0]  ? wait_task_inactive+0x2de/0x5b0
[  285.870785][    C0]  ? migrate_swap+0x340/0x340
[  285.870799][    C0]  arch_ptrace+0x193/0x570
[  285.870812][    C0]  __x64_sys_ptrace+0x17c/0x2a0
[  285.870828][    C0]  do_syscall_64+0x39/0xb0
[  285.870839][    C0]  entry_SYSCALL_64_after_hwframe+0x63/0xcd
[  285.870856][    C0] RIP: 0033:0x4e987a
[  285.870864][    C0] Code: 70 41 83 f8 03 c7 44 24 10 08 00 00 00 48 89 44 24 18 48 8d 44 24 30 8b 70 08 4c 0f 43 d1 48 89 44 24 20 b8 65 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 3e 48 85 c0 78 06 41 83 f8 02 76 1b 48 8b 54
[  285.870873][    C0] RSP: 002b:00007ffc05a0a040 EFLAGS: 00000206 ORIG_RAX: 0000000000000065
[  285.870883][    C0] RAX: ffffffffffffffda RBX: 0000000000dcf368 RCX: 00000000004e987a
[  285.870890][    C0] RDX: 0000000000000000 RSI: 00000000000013d2 RDI: 0000000000000018
[  285.870896][    C0] RBP: 0000000000000018 R08: 0000000000000017 R09: 00000000000003d2
[  285.870903][    C0] R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000dd0b90
[  285.870909][    C0] R13: 0000000000000000 R14: 0000000000dd0b90 R15: 000000000063f160
[  285.870919][    C0]  </TASK>
[  285.871470][   T28] Kernel panic - not syncing: hung_task: blocked tasks
[  285.871478][   T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.3.0-rc3-syzkaller-00026-gfff5a5e7f528 #0
[  285.871494][   T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
[  285.871502][   T28] Call Trace:
[  285.871506][   T28]  <TASK>
[  285.871511][   T28]  dump_stack_lvl+0xd9/0x150
[  285.871531][   T28]  panic+0x688/0x730
[  285.871550][   T28]  ? panic_smp_self_stop+0x90/0x90
[  285.871572][   T28]  ? lapic_can_unplug_cpu+0xa0/0xa0
[  285.871587][   T28]  ? preempt_schedule_thunk+0x1a/0x20
[  285.871611][   T28]  ? watchdog+0xbe8/0x1090
[  285.871629][   T28]  watchdog+0xbf9/0x1090
[  285.871645][   T28]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  285.871662][   T28]  kthread+0x2e8/0x3a0
[  285.871678][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  285.871696][   T28]  ret_from_fork+0x1f/0x30
[  285.871724][   T28]  </TASK>
[  285.876288][   T28] Kernel Offset: disabled
[  286.270584][   T28] Rebooting in 86400 seconds..