./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