./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3874847186

<...>
00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11516] munmap(0x7fd990e3c000, 32768) = 0
[pid 11516] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11516] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11516] close(4)                    = 0
[pid 11516] close(3)                    = 0
[pid 11516] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11516] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11516] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11516] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11516] open("./bus", O_RDONLY)     = 3
[pid 11516] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11516] exit_group(0)               = ?
[pid 11516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11516, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11517 attached
, child_tidptr=0x55555567f5d0) = 11517
[pid 11517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11517] setpgid(0, 0)               = 0
[pid 11517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11517] write(3, "1000", 4)         = 4
[pid 11517] close(3)                    = 0
[pid 11517] memfd_create("syzkaller", 0) = 3
[pid 11517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11517] munmap(0x7fd990e3c000, 32768) = 0
[pid 11517] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11517] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11517] close(4)                    = 0
[pid 11517] close(3)                    = 0
[pid 11517] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11517] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11517] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11517] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11517] open("./bus", O_RDONLY)     = 3
[pid 11517] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11517] exit_group(0)               = ?
[pid 11517] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11517, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11518 attached
, child_tidptr=0x55555567f5d0) = 11518
[pid 11518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11518] setpgid(0, 0)               = 0
[pid 11518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11518] write(3, "1000", 4)         = 4
[pid 11518] close(3)                    = 0
[pid 11518] memfd_create("syzkaller", 0) = 3
[pid 11518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11518] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11518] munmap(0x7fd990e3c000, 32768) = 0
[pid 11518] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11518] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11518] close(4)                    = 0
[pid 11518] close(3)                    = 0
[pid 11518] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11518] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11518] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11518] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11518] open("./bus", O_RDONLY)     = 3
[pid 11518] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11518] exit_group(0)               = ?
[pid 11518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11518, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11519
./strace-static-x86_64: Process 11519 attached
[pid 11519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11519] setpgid(0, 0)               = 0
[pid 11519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11519] write(3, "1000", 4)         = 4
[pid 11519] close(3)                    = 0
[pid 11519] memfd_create("syzkaller", 0) = 3
[pid 11519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11519] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11519] munmap(0x7fd990e3c000, 32768) = 0
[pid 11519] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11519] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11519] close(4)                    = 0
[pid 11519] close(3)                    = 0
[pid 11519] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11519] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11519] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11519] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11519] open("./bus", O_RDONLY)     = 3
[pid 11519] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11519] exit_group(0)               = ?
[pid 11519] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11519, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11520
./strace-static-x86_64: Process 11520 attached
[pid 11520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11520] setpgid(0, 0)               = 0
[pid 11520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11520] write(3, "1000", 4)         = 4
[pid 11520] close(3)                    = 0
[pid 11520] memfd_create("syzkaller", 0) = 3
[pid 11520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11520] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11520] munmap(0x7fd990e3c000, 32768) = 0
[pid 11520] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11520] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11520] close(4)                    = 0
[pid 11520] close(3)                    = 0
[pid 11520] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11520] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11520] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11520] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11520] open("./bus", O_RDONLY)     = 3
[pid 11520] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11520] exit_group(0)               = ?
[pid 11520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11520, 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=0x55555567f5d0) = 11521
./strace-static-x86_64: Process 11521 attached
[pid 11521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11521] setpgid(0, 0)               = 0
[pid 11521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11521] write(3, "1000", 4)         = 4
[pid 11521] close(3)                    = 0
[pid 11521] memfd_create("syzkaller", 0) = 3
[pid 11521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11521] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11521] munmap(0x7fd990e3c000, 32768) = 0
[pid 11521] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11521] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11521] close(4)                    = 0
[pid 11521] close(3)                    = 0
[pid 11521] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11521] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11521] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11521] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11521] open("./bus", O_RDONLY)     = 3
[pid 11521] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11521] exit_group(0)               = ?
[pid 11521] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11521, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11522 attached
 <unfinished ...>
[pid 11522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11522] setpgid(0, 0)               = 0
[pid 11522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11522] write(3, "1000", 4)         = 4
[pid 11522] close(3)                    = 0
[pid 11522] memfd_create("syzkaller", 0) = 3
[pid 11522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11522
[pid 11522] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11522] munmap(0x7fd990e3c000, 32768) = 0
[pid 11522] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11522] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11522] close(4)                    = 0
[pid 11522] close(3)                    = 0
[pid 11522] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11522] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11522] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11522] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11522] open("./bus", O_RDONLY)     = 3
[pid 11522] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11522] exit_group(0)               = ?
[pid 11522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11522, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11523
./strace-static-x86_64: Process 11523 attached
[pid 11523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11523] setpgid(0, 0)               = 0
[pid 11523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11523] write(3, "1000", 4)         = 4
[pid 11523] close(3)                    = 0
[pid 11523] memfd_create("syzkaller", 0) = 3
[pid 11523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11523] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11523] munmap(0x7fd990e3c000, 32768) = 0
[pid 11523] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11523] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11523] close(4)                    = 0
[pid 11523] close(3)                    = 0
[pid 11523] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11523] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11523] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11523] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11523] open("./bus", O_RDONLY)     = 3
[pid 11523] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11523] exit_group(0)               = ?
[pid 11523] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11523, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11524
./strace-static-x86_64: Process 11524 attached
[pid 11524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11524] setpgid(0, 0)               = 0
[pid 11524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11524] write(3, "1000", 4)         = 4
[pid 11524] close(3)                    = 0
[pid 11524] memfd_create("syzkaller", 0) = 3
[pid 11524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11524] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11524] munmap(0x7fd990e3c000, 32768) = 0
[pid 11524] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11524] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11524] close(4)                    = 0
[pid 11524] close(3)                    = 0
[pid 11524] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11524] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11524] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11524] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11524] open("./bus", O_RDONLY)     = 3
[pid 11524] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11524] exit_group(0)               = ?
[pid 11524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11525
./strace-static-x86_64: Process 11525 attached
[pid 11525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11525] setpgid(0, 0)               = 0
[pid 11525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11525] write(3, "1000", 4)         = 4
[pid 11525] close(3)                    = 0
[pid 11525] memfd_create("syzkaller", 0) = 3
[pid 11525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11525] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11525] munmap(0x7fd990e3c000, 32768) = 0
[pid 11525] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11525] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11525] close(4)                    = 0
[pid 11525] close(3)                    = 0
[pid 11525] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11525] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11525] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11525] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11525] open("./bus", O_RDONLY)     = 3
[pid 11525] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11525] exit_group(0)               = ?
[pid 11525] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11525, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11526 attached
, child_tidptr=0x55555567f5d0) = 11526
[pid 11526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11526] setpgid(0, 0)               = 0
[pid 11526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11526] write(3, "1000", 4)         = 4
[pid 11526] close(3)                    = 0
[pid 11526] memfd_create("syzkaller", 0) = 3
[pid 11526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11526] munmap(0x7fd990e3c000, 32768) = 0
[pid 11526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11526] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11526] close(4)                    = 0
[pid 11526] close(3)                    = 0
[pid 11526] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11526] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11526] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11526] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11526] open("./bus", O_RDONLY)     = 3
[pid 11526] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11526] exit_group(0)               = ?
[pid 11526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11527 attached
, child_tidptr=0x55555567f5d0) = 11527
[pid 11527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11527] setpgid(0, 0)               = 0
[pid 11527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11527] write(3, "1000", 4)         = 4
[pid 11527] close(3)                    = 0
[pid 11527] memfd_create("syzkaller", 0) = 3
[pid 11527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11527] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11527] munmap(0x7fd990e3c000, 32768) = 0
[pid 11527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11527] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11527] close(4)                    = 0
[pid 11527] close(3)                    = 0
[pid 11527] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11527] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11527] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11527] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11527] open("./bus", O_RDONLY)     = 3
[pid 11527] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11527] exit_group(0)               = ?
[pid 11527] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11527, 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 11528 attached
, child_tidptr=0x55555567f5d0) = 11528
[pid 11528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11528] setpgid(0, 0)               = 0
[pid 11528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11528] write(3, "1000", 4)         = 4
[pid 11528] close(3)                    = 0
[pid 11528] memfd_create("syzkaller", 0) = 3
[pid 11528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11528] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11528] munmap(0x7fd990e3c000, 32768) = 0
[pid 11528] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11528] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11528] close(4)                    = 0
[pid 11528] close(3)                    = 0
[pid 11528] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11528] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11528] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11528] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11528] open("./bus", O_RDONLY)     = 3
[pid 11528] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11528] exit_group(0)               = ?
[pid 11528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11529
./strace-static-x86_64: Process 11529 attached
[pid 11529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11529] setpgid(0, 0)               = 0
[pid 11529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11529] write(3, "1000", 4)         = 4
[pid 11529] close(3)                    = 0
[pid 11529] memfd_create("syzkaller", 0) = 3
[pid 11529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11529] munmap(0x7fd990e3c000, 32768) = 0
[pid 11529] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11529] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11529] close(4)                    = 0
[pid 11529] close(3)                    = 0
[pid 11529] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11529] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11529] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11529] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11529] open("./bus", O_RDONLY)     = 3
[pid 11529] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11529] exit_group(0)               = ?
[pid 11529] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11529, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11530 attached
, child_tidptr=0x55555567f5d0) = 11530
[pid 11530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11530] setpgid(0, 0)               = 0
[pid 11530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11530] write(3, "1000", 4)         = 4
[pid 11530] close(3)                    = 0
[pid 11530] memfd_create("syzkaller", 0) = 3
[pid 11530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11530] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11530] munmap(0x7fd990e3c000, 32768) = 0
[pid 11530] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11530] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11530] close(4)                    = 0
[pid 11530] close(3)                    = 0
[pid 11530] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11530] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11530] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11530] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11530] open("./bus", O_RDONLY)     = 3
[pid 11530] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11530] exit_group(0)               = ?
[pid 11530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11531
./strace-static-x86_64: Process 11531 attached
[pid 11531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11531] setpgid(0, 0)               = 0
[pid 11531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11531] write(3, "1000", 4)         = 4
[pid 11531] close(3)                    = 0
[pid 11531] memfd_create("syzkaller", 0) = 3
[pid 11531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11531] munmap(0x7fd990e3c000, 32768) = 0
[pid 11531] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11531] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11531] close(4)                    = 0
[pid 11531] close(3)                    = 0
[pid 11531] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11531] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11531] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11531] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11531] open("./bus", O_RDONLY)     = 3
[pid 11531] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11531] exit_group(0)               = ?
[pid 11531] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11531, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11532 attached
, child_tidptr=0x55555567f5d0) = 11532
[pid 11532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11532] setpgid(0, 0)               = 0
[pid 11532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11532] write(3, "1000", 4)         = 4
[pid 11532] close(3)                    = 0
[pid 11532] memfd_create("syzkaller", 0) = 3
[pid 11532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11532] munmap(0x7fd990e3c000, 32768) = 0
[pid 11532] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11532] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11532] close(4)                    = 0
[pid 11532] close(3)                    = 0
[pid 11532] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11532] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11532] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11532] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11532] open("./bus", O_RDONLY)     = 3
[pid 11532] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11532] exit_group(0)               = ?
[pid 11532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11533
./strace-static-x86_64: Process 11533 attached
[pid 11533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11533] setpgid(0, 0)               = 0
[pid 11533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11533] write(3, "1000", 4)         = 4
[pid 11533] close(3)                    = 0
[pid 11533] memfd_create("syzkaller", 0) = 3
[pid 11533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11533] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11533] munmap(0x7fd990e3c000, 32768) = 0
[pid 11533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11533] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11533] close(4)                    = 0
[pid 11533] close(3)                    = 0
[pid 11533] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11533] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11533] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11533] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11533] open("./bus", O_RDONLY)     = 3
[pid 11533] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11533] exit_group(0)               = ?
[pid 11533] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11533, 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=0x55555567f5d0) = 11534
./strace-static-x86_64: Process 11534 attached
[pid 11534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11534] setpgid(0, 0)               = 0
[pid 11534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11534] write(3, "1000", 4)         = 4
[pid 11534] close(3)                    = 0
[pid 11534] memfd_create("syzkaller", 0) = 3
[pid 11534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11534] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11534] munmap(0x7fd990e3c000, 32768) = 0
[pid 11534] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11534] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11534] close(4)                    = 0
[pid 11534] close(3)                    = 0
[pid 11534] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11534] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11534] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11534] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11534] open("./bus", O_RDONLY)     = 3
[pid 11534] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11534] exit_group(0)               = ?
[pid 11534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11534, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11535 attached
, child_tidptr=0x55555567f5d0) = 11535
[pid 11535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11535] setpgid(0, 0)               = 0
[pid 11535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11535] write(3, "1000", 4)         = 4
[pid 11535] close(3)                    = 0
[pid 11535] memfd_create("syzkaller", 0) = 3
[pid 11535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11535] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11535] munmap(0x7fd990e3c000, 32768) = 0
[pid 11535] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11535] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11535] close(4)                    = 0
[pid 11535] close(3)                    = 0
[pid 11535] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11535] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11535] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11535] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11535] open("./bus", O_RDONLY)     = 3
[pid 11535] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11535] exit_group(0)               = ?
[pid 11535] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11535, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11536 attached
, child_tidptr=0x55555567f5d0) = 11536
[pid 11536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11536] setpgid(0, 0)               = 0
[pid 11536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11536] write(3, "1000", 4)         = 4
[pid 11536] close(3)                    = 0
[pid 11536] memfd_create("syzkaller", 0) = 3
[pid 11536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11536] munmap(0x7fd990e3c000, 32768) = 0
[pid 11536] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11536] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11536] close(4)                    = 0
[pid 11536] close(3)                    = 0
[pid 11536] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11536] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11536] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11536] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11536] open("./bus", O_RDONLY)     = 3
[pid 11536] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11536] exit_group(0)               = ?
[pid 11536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11537
./strace-static-x86_64: Process 11537 attached
[pid 11537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11537] setpgid(0, 0)               = 0
[pid 11537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11537] write(3, "1000", 4)         = 4
[pid 11537] close(3)                    = 0
[pid 11537] memfd_create("syzkaller", 0) = 3
[pid 11537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11537] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11537] munmap(0x7fd990e3c000, 32768) = 0
[pid 11537] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11537] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11537] close(4)                    = 0
[pid 11537] close(3)                    = 0
[pid 11537] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11537] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11537] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11537] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11537] open("./bus", O_RDONLY)     = 3
[pid 11537] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11537] exit_group(0)               = ?
[pid 11537] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11537, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11538 attached
, child_tidptr=0x55555567f5d0) = 11538
[pid 11538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11538] setpgid(0, 0)               = 0
[pid 11538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11538] write(3, "1000", 4)         = 4
[pid 11538] close(3)                    = 0
[pid 11538] memfd_create("syzkaller", 0) = 3
[pid 11538] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11538] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11538] munmap(0x7fd990e3c000, 32768) = 0
[pid 11538] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11538] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11538] close(4)                    = 0
[pid 11538] close(3)                    = 0
[pid 11538] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11538] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11538] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11538] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11538] open("./bus", O_RDONLY)     = 3
[pid 11538] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11538] exit_group(0)               = ?
[pid 11538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11539
./strace-static-x86_64: Process 11539 attached
[pid 11539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11539] setpgid(0, 0)               = 0
[pid 11539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11539] write(3, "1000", 4)         = 4
[pid 11539] close(3)                    = 0
[pid 11539] memfd_create("syzkaller", 0) = 3
[pid 11539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11539] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11539] munmap(0x7fd990e3c000, 32768) = 0
[pid 11539] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11539] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11539] close(4)                    = 0
[pid 11539] close(3)                    = 0
[pid 11539] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11539] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11539] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11539] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11539] open("./bus", O_RDONLY)     = 3
[pid 11539] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11539] exit_group(0)               = ?
[pid 11539] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11539, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11540
./strace-static-x86_64: Process 11540 attached
[pid 11540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11540] setpgid(0, 0)               = 0
[pid 11540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11540] write(3, "1000", 4)         = 4
[pid 11540] close(3)                    = 0
[pid 11540] memfd_create("syzkaller", 0) = 3
[pid 11540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11540] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11540] munmap(0x7fd990e3c000, 32768) = 0
[pid 11540] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11540] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11540] close(4)                    = 0
[pid 11540] close(3)                    = 0
[pid 11540] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11540] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11540] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11540] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11540] open("./bus", O_RDONLY)     = 3
[pid 11540] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11540] exit_group(0)               = ?
[pid 11540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11541 attached
, child_tidptr=0x55555567f5d0) = 11541
[pid 11541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11541] setpgid(0, 0)               = 0
[pid 11541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11541] write(3, "1000", 4)         = 4
[pid 11541] close(3)                    = 0
[pid 11541] memfd_create("syzkaller", 0) = 3
[pid 11541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11541] munmap(0x7fd990e3c000, 32768) = 0
[pid 11541] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11541] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11541] close(4)                    = 0
[pid 11541] close(3)                    = 0
[pid 11541] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11541] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11541] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11541] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11541] open("./bus", O_RDONLY)     = 3
[pid 11541] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11541] exit_group(0)               = ?
[pid 11541] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11541, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11542
./strace-static-x86_64: Process 11542 attached
[pid 11542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11542] setpgid(0, 0)               = 0
[pid 11542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11542] write(3, "1000", 4)         = 4
[pid 11542] close(3)                    = 0
[pid 11542] memfd_create("syzkaller", 0) = 3
[pid 11542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11542] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11542] munmap(0x7fd990e3c000, 32768) = 0
[pid 11542] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11542] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11542] close(4)                    = 0
[pid 11542] close(3)                    = 0
[pid 11542] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11542] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11542] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11542] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11542] open("./bus", O_RDONLY)     = 3
[pid 11542] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11542] exit_group(0)               = ?
[pid 11542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11542, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11543
./strace-static-x86_64: Process 11543 attached
[pid 11543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11543] setpgid(0, 0)               = 0
[pid 11543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11543] write(3, "1000", 4)         = 4
[pid 11543] close(3)                    = 0
[pid 11543] memfd_create("syzkaller", 0) = 3
[pid 11543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11543] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11543] munmap(0x7fd990e3c000, 32768) = 0
[pid 11543] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11543] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11543] close(4)                    = 0
[pid 11543] close(3)                    = 0
[pid 11543] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11543] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11543] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11543] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11543] open("./bus", O_RDONLY)     = 3
[pid 11543] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11543] exit_group(0)               = ?
[pid 11543] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11543, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11544
./strace-static-x86_64: Process 11544 attached
[pid 11544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11544] setpgid(0, 0)               = 0
[pid 11544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11544] write(3, "1000", 4)         = 4
[pid 11544] close(3)                    = 0
[pid 11544] memfd_create("syzkaller", 0) = 3
[pid 11544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11544] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11544] munmap(0x7fd990e3c000, 32768) = 0
[pid 11544] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11544] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11544] close(4)                    = 0
[pid 11544] close(3)                    = 0
[pid 11544] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11544] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11544] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11544] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11544] open("./bus", O_RDONLY)     = 3
[pid 11544] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11544] exit_group(0)               = ?
[pid 11544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11545
./strace-static-x86_64: Process 11545 attached
[pid 11545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11545] setpgid(0, 0)               = 0
[pid 11545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11545] write(3, "1000", 4)         = 4
[pid 11545] close(3)                    = 0
[pid 11545] memfd_create("syzkaller", 0) = 3
[pid 11545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11545] munmap(0x7fd990e3c000, 32768) = 0
[pid 11545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11545] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11545] close(4)                    = 0
[pid 11545] close(3)                    = 0
[pid 11545] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11545] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11545] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11545] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11545] open("./bus", O_RDONLY)     = 3
[pid 11545] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11545] exit_group(0)               = ?
[pid 11545] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11545, 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 11546 attached
, child_tidptr=0x55555567f5d0) = 11546
[pid 11546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11546] setpgid(0, 0)               = 0
[pid 11546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11546] write(3, "1000", 4)         = 4
[pid 11546] close(3)                    = 0
[pid 11546] memfd_create("syzkaller", 0) = 3
[pid 11546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11546] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11546] munmap(0x7fd990e3c000, 32768) = 0
[pid 11546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11546] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11546] close(4)                    = 0
[pid 11546] close(3)                    = 0
[pid 11546] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11546] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11546] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11546] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11546] open("./bus", O_RDONLY)     = 3
[pid 11546] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11546] exit_group(0)               = ?
[pid 11546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11546, 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=0x55555567f5d0) = 11547
./strace-static-x86_64: Process 11547 attached
[pid 11547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11547] setpgid(0, 0)               = 0
[pid 11547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11547] write(3, "1000", 4)         = 4
[pid 11547] close(3)                    = 0
[pid 11547] memfd_create("syzkaller", 0) = 3
[pid 11547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11547] munmap(0x7fd990e3c000, 32768) = 0
[pid 11547] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11547] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11547] close(4)                    = 0
[pid 11547] close(3)                    = 0
[pid 11547] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11547] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11547] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11547] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11547] open("./bus", O_RDONLY)     = 3
[pid 11547] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11547] exit_group(0)               = ?
[pid 11547] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11547, 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 11548 attached
, child_tidptr=0x55555567f5d0) = 11548
[pid 11548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11548] setpgid(0, 0)               = 0
[pid 11548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11548] write(3, "1000", 4)         = 4
[pid 11548] close(3)                    = 0
[pid 11548] memfd_create("syzkaller", 0) = 3
[pid 11548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11548] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11548] munmap(0x7fd990e3c000, 32768) = 0
[pid 11548] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11548] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11548] close(4)                    = 0
[pid 11548] close(3)                    = 0
[pid 11548] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11548] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11548] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11548] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11548] open("./bus", O_RDONLY)     = 3
[pid 11548] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11548] exit_group(0)               = ?
[pid 11548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11549
./strace-static-x86_64: Process 11549 attached
[pid 11549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11549] setpgid(0, 0)               = 0
[pid 11549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11549] write(3, "1000", 4)         = 4
[pid 11549] close(3)                    = 0
[pid 11549] memfd_create("syzkaller", 0) = 3
[pid 11549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11549] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11549] munmap(0x7fd990e3c000, 32768) = 0
[pid 11549] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11549] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11549] close(4)                    = 0
[pid 11549] close(3)                    = 0
[pid 11549] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11549] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11549] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11549] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11549] open("./bus", O_RDONLY)     = 3
[pid 11549] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11549] exit_group(0)               = ?
[pid 11549] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11549, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11550 attached
 <unfinished ...>
[pid 11550] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11550
[pid 11550] <... prctl resumed>)        = 0
[pid 11550] setpgid(0, 0)               = 0
[pid 11550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11550] write(3, "1000", 4)         = 4
[pid 11550] close(3)                    = 0
[pid 11550] memfd_create("syzkaller", 0) = 3
[pid 11550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11550] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11550] munmap(0x7fd990e3c000, 32768) = 0
[pid 11550] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11550] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11550] close(4)                    = 0
[pid 11550] close(3)                    = 0
[pid 11550] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11550] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11550] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11550] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11550] open("./bus", O_RDONLY)     = 3
[pid 11550] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11550] exit_group(0)               = ?
[pid 11550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11550, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11551 attached
, child_tidptr=0x55555567f5d0) = 11551
[pid 11551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11551] setpgid(0, 0)               = 0
[pid 11551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11551] write(3, "1000", 4)         = 4
[pid 11551] close(3)                    = 0
[pid 11551] memfd_create("syzkaller", 0) = 3
[pid 11551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11551] munmap(0x7fd990e3c000, 32768) = 0
[pid 11551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11551] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11551] close(4)                    = 0
[pid 11551] close(3)                    = 0
[pid 11551] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11551] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11551] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11551] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11551] open("./bus", O_RDONLY)     = 3
[pid 11551] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11551] exit_group(0)               = ?
[pid 11551] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11551, 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 11552 attached
, child_tidptr=0x55555567f5d0) = 11552
[pid 11552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11552] setpgid(0, 0)               = 0
[pid 11552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11552] write(3, "1000", 4)         = 4
[pid 11552] close(3)                    = 0
[pid 11552] memfd_create("syzkaller", 0) = 3
[pid 11552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11552] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11552] munmap(0x7fd990e3c000, 32768) = 0
[pid 11552] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11552] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11552] close(4)                    = 0
[pid 11552] close(3)                    = 0
[pid 11552] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11552] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11552] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11552] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11552] open("./bus", O_RDONLY)     = 3
[pid 11552] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11552] exit_group(0)               = ?
[pid 11552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11553
./strace-static-x86_64: Process 11553 attached
[pid 11553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11553] setpgid(0, 0)               = 0
[pid 11553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11553] write(3, "1000", 4)         = 4
[pid 11553] close(3)                    = 0
[pid 11553] memfd_create("syzkaller", 0) = 3
[pid 11553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11553] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11553] munmap(0x7fd990e3c000, 32768) = 0
[pid 11553] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11553] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11553] close(4)                    = 0
[pid 11553] close(3)                    = 0
[pid 11553] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11553] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11553] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11553] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11553] open("./bus", O_RDONLY)     = 3
[pid 11553] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11553] exit_group(0)               = ?
[pid 11553] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11553, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11554
./strace-static-x86_64: Process 11554 attached
[pid 11554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11554] setpgid(0, 0)               = 0
[pid 11554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11554] write(3, "1000", 4)         = 4
[pid 11554] close(3)                    = 0
[pid 11554] memfd_create("syzkaller", 0) = 3
[pid 11554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11554] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11554] munmap(0x7fd990e3c000, 32768) = 0
[pid 11554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11554] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11554] close(4)                    = 0
[pid 11554] close(3)                    = 0
[pid 11554] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11554] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11554] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11554] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11554] open("./bus", O_RDONLY)     = 3
[pid 11554] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11554] exit_group(0)               = ?
[pid 11554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11555 attached
, child_tidptr=0x55555567f5d0) = 11555
[pid 11555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11555] setpgid(0, 0)               = 0
[pid 11555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11555] write(3, "1000", 4)         = 4
[pid 11555] close(3)                    = 0
[pid 11555] memfd_create("syzkaller", 0) = 3
[pid 11555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11555] munmap(0x7fd990e3c000, 32768) = 0
[pid 11555] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11555] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11555] close(4)                    = 0
[pid 11555] close(3)                    = 0
[pid 11555] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11555] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11555] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11555] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11555] open("./bus", O_RDONLY)     = 3
[pid 11555] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11555] exit_group(0)               = ?
[pid 11555] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11555, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11556
./strace-static-x86_64: Process 11556 attached
[pid 11556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11556] setpgid(0, 0)               = 0
[pid 11556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11556] write(3, "1000", 4)         = 4
[pid 11556] close(3)                    = 0
[pid 11556] memfd_create("syzkaller", 0) = 3
[pid 11556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11556] munmap(0x7fd990e3c000, 32768) = 0
[pid 11556] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11556] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11556] close(4)                    = 0
[pid 11556] close(3)                    = 0
[pid 11556] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11556] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11556] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11556] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11556] open("./bus", O_RDONLY)     = 3
[pid 11556] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11556] exit_group(0)               = ?
[pid 11556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11556, 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=0x55555567f5d0) = 11557
./strace-static-x86_64: Process 11557 attached
[pid 11557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11557] setpgid(0, 0)               = 0
[pid 11557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11557] write(3, "1000", 4)         = 4
[pid 11557] close(3)                    = 0
[pid 11557] memfd_create("syzkaller", 0) = 3
[pid 11557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11557] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11557] munmap(0x7fd990e3c000, 32768) = 0
[pid 11557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11557] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11557] close(4)                    = 0
[pid 11557] close(3)                    = 0
[pid 11557] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11557] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11557] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11557] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11557] open("./bus", O_RDONLY)     = 3
[pid 11557] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11557] exit_group(0)               = ?
[pid 11557] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11557, 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 11558 attached
, child_tidptr=0x55555567f5d0) = 11558
[pid 11558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11558] setpgid(0, 0)               = 0
[pid 11558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11558] write(3, "1000", 4)         = 4
[pid 11558] close(3)                    = 0
[pid 11558] memfd_create("syzkaller", 0) = 3
[pid 11558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11558] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11558] munmap(0x7fd990e3c000, 32768) = 0
[pid 11558] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11558] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11558] close(4)                    = 0
[pid 11558] close(3)                    = 0
[pid 11558] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11558] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11558] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11558] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11558] open("./bus", O_RDONLY)     = 3
[pid 11558] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11558] exit_group(0)               = ?
[pid 11558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11558, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11559 attached
, child_tidptr=0x55555567f5d0) = 11559
[pid 11559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11559] setpgid(0, 0)               = 0
[pid 11559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11559] write(3, "1000", 4)         = 4
[pid 11559] close(3)                    = 0
[pid 11559] memfd_create("syzkaller", 0) = 3
[pid 11559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11559] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11559] munmap(0x7fd990e3c000, 32768) = 0
[pid 11559] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11559] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11559] close(4)                    = 0
[pid 11559] close(3)                    = 0
[pid 11559] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11559] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11559] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11559] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11559] open("./bus", O_RDONLY)     = 3
[pid 11559] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11559] exit_group(0)               = ?
[pid 11559] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11559, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11560 attached
, child_tidptr=0x55555567f5d0) = 11560
[pid 11560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11560] setpgid(0, 0)               = 0
[pid 11560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11560] write(3, "1000", 4)         = 4
[pid 11560] close(3)                    = 0
[pid 11560] memfd_create("syzkaller", 0) = 3
[pid 11560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11560] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11560] munmap(0x7fd990e3c000, 32768) = 0
[pid 11560] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11560] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11560] close(4)                    = 0
[pid 11560] close(3)                    = 0
[pid 11560] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11560] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11560] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11560] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11560] open("./bus", O_RDONLY)     = 3
[pid 11560] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11560] exit_group(0)               = ?
[pid 11560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11561 attached
, child_tidptr=0x55555567f5d0) = 11561
[pid 11561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11561] setpgid(0, 0)               = 0
[pid 11561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11561] write(3, "1000", 4)         = 4
[pid 11561] close(3)                    = 0
[pid 11561] memfd_create("syzkaller", 0) = 3
[pid 11561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11561] munmap(0x7fd990e3c000, 32768) = 0
[pid 11561] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11561] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11561] close(4)                    = 0
[pid 11561] close(3)                    = 0
[pid 11561] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11561] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11561] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11561] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11561] open("./bus", O_RDONLY)     = 3
[pid 11561] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11561] exit_group(0)               = ?
[pid 11561] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11561, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11562 attached
, child_tidptr=0x55555567f5d0) = 11562
[pid 11562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11562] setpgid(0, 0)               = 0
[pid 11562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11562] write(3, "1000", 4)         = 4
[pid 11562] close(3)                    = 0
[pid 11562] memfd_create("syzkaller", 0) = 3
[pid 11562] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11562] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11562] munmap(0x7fd990e3c000, 32768) = 0
[pid 11562] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11562] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11562] close(4)                    = 0
[pid 11562] close(3)                    = 0
[pid 11562] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11562] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11562] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11562] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11562] open("./bus", O_RDONLY)     = 3
[pid 11562] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11562] exit_group(0)               = ?
[pid 11562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11563
./strace-static-x86_64: Process 11563 attached
[pid 11563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11563] setpgid(0, 0)               = 0
[pid 11563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11563] write(3, "1000", 4)         = 4
[pid 11563] close(3)                    = 0
[pid 11563] memfd_create("syzkaller", 0) = 3
[pid 11563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11563] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11563] munmap(0x7fd990e3c000, 32768) = 0
[pid 11563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11563] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11563] close(4)                    = 0
[pid 11563] close(3)                    = 0
[pid 11563] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11563] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11563] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11563] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11563] open("./bus", O_RDONLY)     = 3
[pid 11563] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11563] exit_group(0)               = ?
[pid 11563] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11563, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11564 attached
, child_tidptr=0x55555567f5d0) = 11564
[pid 11564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11564] setpgid(0, 0)               = 0
[pid 11564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11564] write(3, "1000", 4)         = 4
[pid 11564] close(3)                    = 0
[pid 11564] memfd_create("syzkaller", 0) = 3
[pid 11564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11564] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11564] munmap(0x7fd990e3c000, 32768) = 0
[pid 11564] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11564] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11564] close(4)                    = 0
[pid 11564] close(3)                    = 0
[pid 11564] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11564] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11564] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11564] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11564] open("./bus", O_RDONLY)     = 3
[pid 11564] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11564] exit_group(0)               = ?
[pid 11564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11565 attached
, child_tidptr=0x55555567f5d0) = 11565
[pid 11565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11565] setpgid(0, 0)               = 0
[pid 11565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11565] write(3, "1000", 4)         = 4
[pid 11565] close(3)                    = 0
[pid 11565] memfd_create("syzkaller", 0) = 3
[pid 11565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11565] munmap(0x7fd990e3c000, 32768) = 0
[pid 11565] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11565] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11565] close(4)                    = 0
[pid 11565] close(3)                    = 0
[pid 11565] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11565] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11565] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11565] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11565] open("./bus", O_RDONLY)     = 3
[pid 11565] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11565] exit_group(0)               = ?
[pid 11565] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11565, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11566
./strace-static-x86_64: Process 11566 attached
[pid 11566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11566] setpgid(0, 0)               = 0
[pid 11566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11566] write(3, "1000", 4)         = 4
[pid 11566] close(3)                    = 0
[pid 11566] memfd_create("syzkaller", 0) = 3
[pid 11566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11566] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11566] munmap(0x7fd990e3c000, 32768) = 0
[pid 11566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11566] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11566] close(4)                    = 0
[pid 11566] close(3)                    = 0
[pid 11566] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11566] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11566] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11566] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11566] open("./bus", O_RDONLY)     = 3
[pid 11566] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11566] exit_group(0)               = ?
[pid 11566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11566, 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=0x55555567f5d0) = 11567
./strace-static-x86_64: Process 11567 attached
[pid 11567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11567] setpgid(0, 0)               = 0
[pid 11567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11567] write(3, "1000", 4)         = 4
[pid 11567] close(3)                    = 0
[pid 11567] memfd_create("syzkaller", 0) = 3
[pid 11567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11567] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11567] munmap(0x7fd990e3c000, 32768) = 0
[pid 11567] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11567] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11567] close(4)                    = 0
[pid 11567] close(3)                    = 0
[pid 11567] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11567] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11567] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11567] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11567] open("./bus", O_RDONLY)     = 3
[pid 11567] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11567] exit_group(0)               = ?
[pid 11567] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11567, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11568
./strace-static-x86_64: Process 11568 attached
[pid 11568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11568] setpgid(0, 0)               = 0
[pid 11568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11568] write(3, "1000", 4)         = 4
[pid 11568] close(3)                    = 0
[pid 11568] memfd_create("syzkaller", 0) = 3
[pid 11568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11568] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11568] munmap(0x7fd990e3c000, 32768) = 0
[pid 11568] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11568] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11568] close(4)                    = 0
[pid 11568] close(3)                    = 0
[pid 11568] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11568] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11568] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11568] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11568] open("./bus", O_RDONLY)     = 3
[pid 11568] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11568] exit_group(0)               = ?
[pid 11568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11569
./strace-static-x86_64: Process 11569 attached
[pid 11569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11569] setpgid(0, 0)               = 0
[pid 11569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11569] write(3, "1000", 4)         = 4
[pid 11569] close(3)                    = 0
[pid 11569] memfd_create("syzkaller", 0) = 3
[pid 11569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11569] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11569] munmap(0x7fd990e3c000, 32768) = 0
[pid 11569] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11569] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11569] close(4)                    = 0
[pid 11569] close(3)                    = 0
[pid 11569] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11569] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11569] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11569] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11569] open("./bus", O_RDONLY)     = 3
[pid 11569] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11569] exit_group(0)               = ?
[pid 11569] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11569, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11570
./strace-static-x86_64: Process 11570 attached
[pid 11570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11570] setpgid(0, 0)               = 0
[pid 11570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11570] write(3, "1000", 4)         = 4
[pid 11570] close(3)                    = 0
[pid 11570] memfd_create("syzkaller", 0) = 3
[pid 11570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11570] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11570] munmap(0x7fd990e3c000, 32768) = 0
[pid 11570] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11570] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11570] close(4)                    = 0
[pid 11570] close(3)                    = 0
[pid 11570] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11570] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11570] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11570] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11570] open("./bus", O_RDONLY)     = 3
[pid 11570] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11570] exit_group(0)               = ?
[pid 11570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11570, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11571
./strace-static-x86_64: Process 11571 attached
[pid 11571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11571] setpgid(0, 0)               = 0
[pid 11571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11571] write(3, "1000", 4)         = 4
[pid 11571] close(3)                    = 0
[pid 11571] memfd_create("syzkaller", 0) = 3
[pid 11571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11571] munmap(0x7fd990e3c000, 32768) = 0
[pid 11571] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11571] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11571] close(4)                    = 0
[pid 11571] close(3)                    = 0
[pid 11571] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11571] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11571] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11571] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11571] open("./bus", O_RDONLY)     = 3
[pid 11571] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11571] exit_group(0)               = ?
[pid 11571] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11571, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11572 attached
, child_tidptr=0x55555567f5d0) = 11572
[pid 11572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11572] setpgid(0, 0)               = 0
[pid 11572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11572] write(3, "1000", 4)         = 4
[pid 11572] close(3)                    = 0
[pid 11572] memfd_create("syzkaller", 0) = 3
[pid 11572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11572] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11572] munmap(0x7fd990e3c000, 32768) = 0
[pid 11572] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11572] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11572] close(4)                    = 0
[pid 11572] close(3)                    = 0
[pid 11572] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11572] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11572] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11572] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11572] open("./bus", O_RDONLY)     = 3
[pid 11572] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11572] exit_group(0)               = ?
[pid 11572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11573 attached
 <unfinished ...>
[pid 11573] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11573
[pid 11573] <... prctl resumed>)        = 0
[pid 11573] setpgid(0, 0)               = 0
[pid 11573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11573] write(3, "1000", 4)         = 4
[pid 11573] close(3)                    = 0
[pid 11573] memfd_create("syzkaller", 0) = 3
[pid 11573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11573] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11573] munmap(0x7fd990e3c000, 32768) = 0
[pid 11573] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11573] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11573] close(4)                    = 0
[pid 11573] close(3)                    = 0
[pid 11573] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11573] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11573] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11573] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11573] open("./bus", O_RDONLY)     = 3
[pid 11573] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11573] exit_group(0)               = ?
[pid 11573] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11573, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11574
./strace-static-x86_64: Process 11574 attached
[pid 11574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11574] setpgid(0, 0)               = 0
[pid 11574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11574] write(3, "1000", 4)         = 4
[pid 11574] close(3)                    = 0
[pid 11574] memfd_create("syzkaller", 0) = 3
[pid 11574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11574] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11574] munmap(0x7fd990e3c000, 32768) = 0
[pid 11574] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11574] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11574] close(4)                    = 0
[pid 11574] close(3)                    = 0
[pid 11574] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11574] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11574] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11574] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11574] open("./bus", O_RDONLY)     = 3
[pid 11574] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11574] exit_group(0)               = ?
[pid 11574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11575
./strace-static-x86_64: Process 11575 attached
[pid 11575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11575] setpgid(0, 0)               = 0
[pid 11575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11575] write(3, "1000", 4)         = 4
[pid 11575] close(3)                    = 0
[pid 11575] memfd_create("syzkaller", 0) = 3
[pid 11575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11575] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11575] munmap(0x7fd990e3c000, 32768) = 0
[pid 11575] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11575] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11575] close(4)                    = 0
[pid 11575] close(3)                    = 0
[pid 11575] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11575] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11575] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11575] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11575] open("./bus", O_RDONLY)     = 3
[pid 11575] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11575] exit_group(0)               = ?
[pid 11575] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11575, 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 11576 attached
, child_tidptr=0x55555567f5d0) = 11576
[pid 11576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11576] setpgid(0, 0)               = 0
[pid 11576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11576] write(3, "1000", 4)         = 4
[pid 11576] close(3)                    = 0
[pid 11576] memfd_create("syzkaller", 0) = 3
[pid 11576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11576] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11576] munmap(0x7fd990e3c000, 32768) = 0
[pid 11576] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11576] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11576] close(4)                    = 0
[pid 11576] close(3)                    = 0
[pid 11576] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11576] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11576] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11576] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11576] open("./bus", O_RDONLY)     = 3
[pid 11576] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11576] exit_group(0)               = ?
[pid 11576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11577
./strace-static-x86_64: Process 11577 attached
[pid 11577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11577] setpgid(0, 0)               = 0
[pid 11577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11577] write(3, "1000", 4)         = 4
[pid 11577] close(3)                    = 0
[pid 11577] memfd_create("syzkaller", 0) = 3
[pid 11577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11577] munmap(0x7fd990e3c000, 32768) = 0
[pid 11577] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11577] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11577] close(4)                    = 0
[pid 11577] close(3)                    = 0
[pid 11577] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11577] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11577] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11577] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11577] open("./bus", O_RDONLY)     = 3
[pid 11577] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11577] exit_group(0)               = ?
[pid 11577] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11577, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11578
./strace-static-x86_64: Process 11578 attached
[pid 11578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11578] setpgid(0, 0)               = 0
[pid 11578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11578] write(3, "1000", 4)         = 4
[pid 11578] close(3)                    = 0
[pid 11578] memfd_create("syzkaller", 0) = 3
[pid 11578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11578] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11578] munmap(0x7fd990e3c000, 32768) = 0
[pid 11578] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11578] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11578] close(4)                    = 0
[pid 11578] close(3)                    = 0
[pid 11578] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11578] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11578] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11578] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11578] open("./bus", O_RDONLY)     = 3
[pid 11578] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11578] exit_group(0)               = ?
[pid 11578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11578, 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=0x55555567f5d0) = 11579
./strace-static-x86_64: Process 11579 attached
[pid 11579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11579] setpgid(0, 0)               = 0
[pid 11579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11579] write(3, "1000", 4)         = 4
[pid 11579] close(3)                    = 0
[pid 11579] memfd_create("syzkaller", 0) = 3
[pid 11579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11579] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11579] munmap(0x7fd990e3c000, 32768) = 0
[pid 11579] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11579] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11579] close(4)                    = 0
[pid 11579] close(3)                    = 0
[pid 11579] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11579] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11579] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11579] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11579] open("./bus", O_RDONLY)     = 3
[pid 11579] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11579] exit_group(0)               = ?
[pid 11579] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11579, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11580
./strace-static-x86_64: Process 11580 attached
[pid 11580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11580] setpgid(0, 0)               = 0
[pid 11580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11580] write(3, "1000", 4)         = 4
[pid 11580] close(3)                    = 0
[pid 11580] memfd_create("syzkaller", 0) = 3
[pid 11580] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11580] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11580] munmap(0x7fd990e3c000, 32768) = 0
[pid 11580] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11580] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11580] close(4)                    = 0
[pid 11580] close(3)                    = 0
[pid 11580] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11580] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11580] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11580] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11580] open("./bus", O_RDONLY)     = 3
[pid 11580] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11580] exit_group(0)               = ?
[pid 11580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11580, 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 11581 attached
, child_tidptr=0x55555567f5d0) = 11581
[pid 11581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11581] setpgid(0, 0)               = 0
[pid 11581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11581] write(3, "1000", 4)         = 4
[pid 11581] close(3)                    = 0
[pid 11581] memfd_create("syzkaller", 0) = 3
[pid 11581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11581] munmap(0x7fd990e3c000, 32768) = 0
[pid 11581] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11581] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11581] close(4)                    = 0
[pid 11581] close(3)                    = 0
[pid 11581] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11581] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11581] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11581] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11581] open("./bus", O_RDONLY)     = 3
[pid 11581] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11581] exit_group(0)               = ?
[pid 11581] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11581, 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 11582 attached
, child_tidptr=0x55555567f5d0) = 11582
[pid 11582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11582] setpgid(0, 0)               = 0
[pid 11582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11582] write(3, "1000", 4)         = 4
[pid 11582] close(3)                    = 0
[pid 11582] memfd_create("syzkaller", 0) = 3
[pid 11582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11582] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11582] munmap(0x7fd990e3c000, 32768) = 0
[pid 11582] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11582] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11582] close(4)                    = 0
[pid 11582] close(3)                    = 0
[pid 11582] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11582] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11582] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11582] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11582] open("./bus", O_RDONLY)     = 3
[pid 11582] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11582] exit_group(0)               = ?
[pid 11582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11582, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11583 attached
, child_tidptr=0x55555567f5d0) = 11583
[pid 11583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11583] setpgid(0, 0)               = 0
[pid 11583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11583] write(3, "1000", 4)         = 4
[pid 11583] close(3)                    = 0
[pid 11583] memfd_create("syzkaller", 0) = 3
[pid 11583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11583] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11583] munmap(0x7fd990e3c000, 32768) = 0
[pid 11583] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11583] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11583] close(4)                    = 0
[pid 11583] close(3)                    = 0
[pid 11583] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11583] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11583] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11583] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11583] open("./bus", O_RDONLY)     = 3
[pid 11583] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11583] exit_group(0)               = ?
[pid 11583] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11583, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11584 attached
, child_tidptr=0x55555567f5d0) = 11584
[pid 11584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11584] setpgid(0, 0)               = 0
[pid 11584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11584] write(3, "1000", 4)         = 4
[pid 11584] close(3)                    = 0
[pid 11584] memfd_create("syzkaller", 0) = 3
[pid 11584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11584] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11584] munmap(0x7fd990e3c000, 32768) = 0
[pid 11584] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11584] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11584] close(4)                    = 0
[pid 11584] close(3)                    = 0
[pid 11584] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11584] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11584] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11584] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11584] open("./bus", O_RDONLY)     = 3
[pid 11584] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11584] exit_group(0)               = ?
[pid 11584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11584, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11585
./strace-static-x86_64: Process 11585 attached
[pid 11585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11585] setpgid(0, 0)               = 0
[pid 11585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11585] write(3, "1000", 4)         = 4
[pid 11585] close(3)                    = 0
[pid 11585] memfd_create("syzkaller", 0) = 3
[pid 11585] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11585] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11585] munmap(0x7fd990e3c000, 32768) = 0
[pid 11585] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11585] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11585] close(4)                    = 0
[pid 11585] close(3)                    = 0
[pid 11585] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11585] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11585] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11585] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11585] open("./bus", O_RDONLY)     = 3
[pid 11585] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11585] exit_group(0)               = ?
[pid 11585] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11585, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11586
./strace-static-x86_64: Process 11586 attached
[pid 11586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11586] setpgid(0, 0)               = 0
[pid 11586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11586] write(3, "1000", 4)         = 4
[pid 11586] close(3)                    = 0
[pid 11586] memfd_create("syzkaller", 0) = 3
[pid 11586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11586] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11586] munmap(0x7fd990e3c000, 32768) = 0
[pid 11586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11586] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11586] close(4)                    = 0
[pid 11586] close(3)                    = 0
[pid 11586] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11586] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11586] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11586] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11586] open("./bus", O_RDONLY)     = 3
[pid 11586] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11586] exit_group(0)               = ?
[pid 11586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11587
./strace-static-x86_64: Process 11587 attached
[pid 11587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11587] setpgid(0, 0)               = 0
[pid 11587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11587] write(3, "1000", 4)         = 4
[pid 11587] close(3)                    = 0
[pid 11587] memfd_create("syzkaller", 0) = 3
[pid 11587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11587] munmap(0x7fd990e3c000, 32768) = 0
[pid 11587] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11587] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11587] close(4)                    = 0
[pid 11587] close(3)                    = 0
[pid 11587] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11587] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11587] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11587] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11587] open("./bus", O_RDONLY)     = 3
[pid 11587] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11587] exit_group(0)               = ?
[pid 11587] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11587, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11588
./strace-static-x86_64: Process 11588 attached
[pid 11588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11588] setpgid(0, 0)               = 0
[pid 11588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11588] write(3, "1000", 4)         = 4
[pid 11588] close(3)                    = 0
[pid 11588] memfd_create("syzkaller", 0) = 3
[pid 11588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11588] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11588] munmap(0x7fd990e3c000, 32768) = 0
[pid 11588] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11588] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11588] close(4)                    = 0
[pid 11588] close(3)                    = 0
[pid 11588] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11588] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11588] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11588] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11588] open("./bus", O_RDONLY)     = 3
[pid 11588] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11588] exit_group(0)               = ?
[pid 11588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11589
./strace-static-x86_64: Process 11589 attached
[pid 11589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11589] setpgid(0, 0)               = 0
[pid 11589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11589] write(3, "1000", 4)         = 4
[pid 11589] close(3)                    = 0
[pid 11589] memfd_create("syzkaller", 0) = 3
[pid 11589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11589] munmap(0x7fd990e3c000, 32768) = 0
[pid 11589] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11589] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11589] close(4)                    = 0
[pid 11589] close(3)                    = 0
[pid 11589] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11589] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11589] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11589] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11589] open("./bus", O_RDONLY)     = 3
[pid 11589] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11589] exit_group(0)               = ?
[pid 11589] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11589, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11590
./strace-static-x86_64: Process 11590 attached
[pid 11590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11590] setpgid(0, 0)               = 0
[pid 11590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11590] write(3, "1000", 4)         = 4
[pid 11590] close(3)                    = 0
[pid 11590] memfd_create("syzkaller", 0) = 3
[pid 11590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11590] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11590] munmap(0x7fd990e3c000, 32768) = 0
[pid 11590] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11590] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11590] close(4)                    = 0
[pid 11590] close(3)                    = 0
[pid 11590] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11590] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11590] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11590] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11590] open("./bus", O_RDONLY)     = 3
[pid 11590] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11590] exit_group(0)               = ?
[pid 11590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11590, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11591
./strace-static-x86_64: Process 11591 attached
[pid 11591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11591] setpgid(0, 0)               = 0
[pid 11591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11591] write(3, "1000", 4)         = 4
[pid 11591] close(3)                    = 0
[pid 11591] memfd_create("syzkaller", 0) = 3
[pid 11591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11591] munmap(0x7fd990e3c000, 32768) = 0
[pid 11591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11591] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11591] close(4)                    = 0
[pid 11591] close(3)                    = 0
[pid 11591] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11591] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11591] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11591] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11591] open("./bus", O_RDONLY)     = 3
[pid 11591] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11591] exit_group(0)               = ?
[pid 11591] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11591, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11592
./strace-static-x86_64: Process 11592 attached
[pid 11592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11592] setpgid(0, 0)               = 0
[pid 11592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11592] write(3, "1000", 4)         = 4
[pid 11592] close(3)                    = 0
[pid 11592] memfd_create("syzkaller", 0) = 3
[pid 11592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11592] munmap(0x7fd990e3c000, 32768) = 0
[pid 11592] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11592] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11592] close(4)                    = 0
[pid 11592] close(3)                    = 0
[pid 11592] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11592] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11592] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11592] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11592] open("./bus", O_RDONLY)     = 3
[pid 11592] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11592] exit_group(0)               = ?
[pid 11592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11593
./strace-static-x86_64: Process 11593 attached
[pid 11593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11593] setpgid(0, 0)               = 0
[pid 11593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11593] write(3, "1000", 4)         = 4
[pid 11593] close(3)                    = 0
[pid 11593] memfd_create("syzkaller", 0) = 3
[pid 11593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11593] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11593] munmap(0x7fd990e3c000, 32768) = 0
[pid 11593] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11593] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11593] close(4)                    = 0
[pid 11593] close(3)                    = 0
[pid 11593] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11593] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11593] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11593] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11593] open("./bus", O_RDONLY)     = 3
[pid 11593] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11593] exit_group(0)               = ?
[pid 11593] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11593, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11594 attached
, child_tidptr=0x55555567f5d0) = 11594
[pid 11594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11594] setpgid(0, 0)               = 0
[pid 11594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11594] write(3, "1000", 4)         = 4
[pid 11594] close(3)                    = 0
[pid 11594] memfd_create("syzkaller", 0) = 3
[pid 11594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11594] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11594] munmap(0x7fd990e3c000, 32768) = 0
[pid 11594] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11594] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11594] close(4)                    = 0
[pid 11594] close(3)                    = 0
[pid 11594] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11594] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11594] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11594] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11594] open("./bus", O_RDONLY)     = 3
[pid 11594] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11594] exit_group(0)               = ?
[pid 11594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11594, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11595
./strace-static-x86_64: Process 11595 attached
[pid 11595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11595] setpgid(0, 0)               = 0
[pid 11595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11595] write(3, "1000", 4)         = 4
[pid 11595] close(3)                    = 0
[pid 11595] memfd_create("syzkaller", 0) = 3
[pid 11595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11595] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11595] munmap(0x7fd990e3c000, 32768) = 0
[pid 11595] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11595] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11595] close(4)                    = 0
[pid 11595] close(3)                    = 0
[pid 11595] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11595] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11595] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11595] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11595] open("./bus", O_RDONLY)     = 3
[pid 11595] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11595] exit_group(0)               = ?
[pid 11595] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11595, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11596
./strace-static-x86_64: Process 11596 attached
[pid 11596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11596] setpgid(0, 0)               = 0
[pid 11596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11596] write(3, "1000", 4)         = 4
[pid 11596] close(3)                    = 0
[pid 11596] memfd_create("syzkaller", 0) = 3
[pid 11596] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11596] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11596] munmap(0x7fd990e3c000, 32768) = 0
[pid 11596] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11596] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11596] close(4)                    = 0
[pid 11596] close(3)                    = 0
[pid 11596] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11596] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11596] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11596] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11596] open("./bus", O_RDONLY)     = 3
[pid 11596] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11596] exit_group(0)               = ?
[pid 11596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11596, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11597
./strace-static-x86_64: Process 11597 attached
[pid 11597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11597] setpgid(0, 0)               = 0
[pid 11597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11597] write(3, "1000", 4)         = 4
[pid 11597] close(3)                    = 0
[pid 11597] memfd_create("syzkaller", 0) = 3
[pid 11597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11597] munmap(0x7fd990e3c000, 32768) = 0
[pid 11597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11597] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11597] close(4)                    = 0
[pid 11597] close(3)                    = 0
[pid 11597] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11597] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11597] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11597] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11597] open("./bus", O_RDONLY)     = 3
[pid 11597] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11597] exit_group(0)               = ?
[pid 11597] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11597, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11598
./strace-static-x86_64: Process 11598 attached
[pid 11598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11598] setpgid(0, 0)               = 0
[pid 11598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11598] write(3, "1000", 4)         = 4
[pid 11598] close(3)                    = 0
[pid 11598] memfd_create("syzkaller", 0) = 3
[pid 11598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11598] munmap(0x7fd990e3c000, 32768) = 0
[pid 11598] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11598] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11598] close(4)                    = 0
[pid 11598] close(3)                    = 0
[pid 11598] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11598] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11598] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11598] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11598] open("./bus", O_RDONLY)     = 3
[pid 11598] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11598] exit_group(0)               = ?
[pid 11598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11599
./strace-static-x86_64: Process 11599 attached
[pid 11599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11599] setpgid(0, 0)               = 0
[pid 11599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11599] write(3, "1000", 4)         = 4
[pid 11599] close(3)                    = 0
[pid 11599] memfd_create("syzkaller", 0) = 3
[pid 11599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11599] munmap(0x7fd990e3c000, 32768) = 0
[pid 11599] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11599] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11599] close(4)                    = 0
[pid 11599] close(3)                    = 0
[pid 11599] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11599] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11599] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11599] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11599] open("./bus", O_RDONLY)     = 3
[pid 11599] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11599] exit_group(0)               = ?
[pid 11599] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11599, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11600
./strace-static-x86_64: Process 11600 attached
[pid 11600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11600] setpgid(0, 0)               = 0
[pid 11600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11600] write(3, "1000", 4)         = 4
[pid 11600] close(3)                    = 0
[pid 11600] memfd_create("syzkaller", 0) = 3
[pid 11600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11600] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11600] munmap(0x7fd990e3c000, 32768) = 0
[pid 11600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11600] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11600] close(4)                    = 0
[pid 11600] close(3)                    = 0
[pid 11600] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11600] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11600] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11600] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11600] open("./bus", O_RDONLY)     = 3
[pid 11600] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11600] exit_group(0)               = ?
[pid 11600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11601
./strace-static-x86_64: Process 11601 attached
[pid 11601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11601] setpgid(0, 0)               = 0
[pid 11601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11601] write(3, "1000", 4)         = 4
[pid 11601] close(3)                    = 0
[pid 11601] memfd_create("syzkaller", 0) = 3
[pid 11601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11601] munmap(0x7fd990e3c000, 32768) = 0
[pid 11601] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11601] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11601] close(4)                    = 0
[pid 11601] close(3)                    = 0
[pid 11601] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11601] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11601] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11601] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11601] open("./bus", O_RDONLY)     = 3
[pid 11601] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11601] exit_group(0)               = ?
[pid 11601] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11601, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11602
./strace-static-x86_64: Process 11602 attached
[pid 11602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11602] setpgid(0, 0)               = 0
[pid 11602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11602] write(3, "1000", 4)         = 4
[pid 11602] close(3)                    = 0
[pid 11602] memfd_create("syzkaller", 0) = 3
[pid 11602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11602] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11602] munmap(0x7fd990e3c000, 32768) = 0
[pid 11602] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11602] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11602] close(4)                    = 0
[pid 11602] close(3)                    = 0
[pid 11602] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11602] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11602] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11602] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11602] open("./bus", O_RDONLY)     = 3
[pid 11602] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11602] exit_group(0)               = ?
[pid 11602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11602, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11603
./strace-static-x86_64: Process 11603 attached
[pid 11603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11603] setpgid(0, 0)               = 0
[pid 11603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11603] write(3, "1000", 4)         = 4
[pid 11603] close(3)                    = 0
[pid 11603] memfd_create("syzkaller", 0) = 3
[pid 11603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11603] munmap(0x7fd990e3c000, 32768) = 0
[pid 11603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11603] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11603] close(4)                    = 0
[pid 11603] close(3)                    = 0
[pid 11603] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11603] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11603] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11603] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11603] open("./bus", O_RDONLY)     = 3
[pid 11603] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11603] exit_group(0)               = ?
[pid 11603] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11603, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11604
./strace-static-x86_64: Process 11604 attached
[pid 11604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11604] setpgid(0, 0)               = 0
[pid 11604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11604] write(3, "1000", 4)         = 4
[pid 11604] close(3)                    = 0
[pid 11604] memfd_create("syzkaller", 0) = 3
[pid 11604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11604] munmap(0x7fd990e3c000, 32768) = 0
[pid 11604] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11604] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11604] close(4)                    = 0
[pid 11604] close(3)                    = 0
[pid 11604] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11604] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11604] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11604] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11604] open("./bus", O_RDONLY)     = 3
[pid 11604] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11604] exit_group(0)               = ?
[pid 11604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11604, 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 11605 attached
, child_tidptr=0x55555567f5d0) = 11605
[pid 11605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11605] setpgid(0, 0)               = 0
[pid 11605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11605] write(3, "1000", 4)         = 4
[pid 11605] close(3)                    = 0
[pid 11605] memfd_create("syzkaller", 0) = 3
[pid 11605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11605] munmap(0x7fd990e3c000, 32768) = 0
[pid 11605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11605] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11605] close(4)                    = 0
[pid 11605] close(3)                    = 0
[pid 11605] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11605] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11605] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11605] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11605] open("./bus", O_RDONLY)     = 3
[pid 11605] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11605] exit_group(0)               = ?
[pid 11605] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11605, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11606
./strace-static-x86_64: Process 11606 attached
[pid 11606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11606] setpgid(0, 0)               = 0
[pid 11606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11606] write(3, "1000", 4)         = 4
[pid 11606] close(3)                    = 0
[pid 11606] memfd_create("syzkaller", 0) = 3
[pid 11606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11606] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11606] munmap(0x7fd990e3c000, 32768) = 0
[pid 11606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11606] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11606] close(4)                    = 0
[pid 11606] close(3)                    = 0
[pid 11606] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11606] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11606] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11606] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11606] open("./bus", O_RDONLY)     = 3
[pid 11606] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11606] exit_group(0)               = ?
[pid 11606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11606, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11607
./strace-static-x86_64: Process 11607 attached
[pid 11607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11607] setpgid(0, 0)               = 0
[pid 11607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11607] write(3, "1000", 4)         = 4
[pid 11607] close(3)                    = 0
[pid 11607] memfd_create("syzkaller", 0) = 3
[pid 11607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11607] munmap(0x7fd990e3c000, 32768) = 0
[pid 11607] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11607] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11607] close(4)                    = 0
[pid 11607] close(3)                    = 0
[pid 11607] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11607] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11607] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11607] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11607] open("./bus", O_RDONLY)     = 3
[pid 11607] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11607] exit_group(0)               = ?
[pid 11607] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11607, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11608
./strace-static-x86_64: Process 11608 attached
[pid 11608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11608] setpgid(0, 0)               = 0
[pid 11608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11608] write(3, "1000", 4)         = 4
[pid 11608] close(3)                    = 0
[pid 11608] memfd_create("syzkaller", 0) = 3
[pid 11608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11608] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11608] munmap(0x7fd990e3c000, 32768) = 0
[pid 11608] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11608] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11608] close(4)                    = 0
[pid 11608] close(3)                    = 0
[pid 11608] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11608] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11608] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11608] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11608] open("./bus", O_RDONLY)     = 3
[pid 11608] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11608] exit_group(0)               = ?
[pid 11608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11609
./strace-static-x86_64: Process 11609 attached
[pid 11609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11609] setpgid(0, 0)               = 0
[pid 11609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11609] write(3, "1000", 4)         = 4
[pid 11609] close(3)                    = 0
[pid 11609] memfd_create("syzkaller", 0) = 3
[pid 11609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11609] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11609] munmap(0x7fd990e3c000, 32768) = 0
[pid 11609] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11609] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11609] close(4)                    = 0
[pid 11609] close(3)                    = 0
[pid 11609] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11609] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11609] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11609] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11609] open("./bus", O_RDONLY)     = 3
[pid 11609] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11609] exit_group(0)               = ?
[pid 11609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11609, 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 11610 attached
, child_tidptr=0x55555567f5d0) = 11610
[pid 11610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11610] setpgid(0, 0)               = 0
[pid 11610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11610] write(3, "1000", 4)         = 4
[pid 11610] close(3)                    = 0
[pid 11610] memfd_create("syzkaller", 0) = 3
[pid 11610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11610] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11610] munmap(0x7fd990e3c000, 32768) = 0
[pid 11610] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11610] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11610] close(4)                    = 0
[pid 11610] close(3)                    = 0
[pid 11610] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11610] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11610] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11610] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11610] open("./bus", O_RDONLY)     = 3
[pid 11610] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11610] exit_group(0)               = ?
[pid 11610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11611 attached
, child_tidptr=0x55555567f5d0) = 11611
[pid 11611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11611] setpgid(0, 0)               = 0
[pid 11611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11611] write(3, "1000", 4)         = 4
[pid 11611] close(3)                    = 0
[pid 11611] memfd_create("syzkaller", 0) = 3
[pid 11611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11611] munmap(0x7fd990e3c000, 32768) = 0
[pid 11611] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11611] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11611] close(4)                    = 0
[pid 11611] close(3)                    = 0
[pid 11611] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11611] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11611] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11611] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11611] open("./bus", O_RDONLY)     = 3
[pid 11611] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11611] exit_group(0)               = ?
[pid 11611] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11611, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11612 attached
, child_tidptr=0x55555567f5d0) = 11612
[pid 11612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11612] setpgid(0, 0)               = 0
[pid 11612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11612] write(3, "1000", 4)         = 4
[pid 11612] close(3)                    = 0
[pid 11612] memfd_create("syzkaller", 0) = 3
[pid 11612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11612] munmap(0x7fd990e3c000, 32768) = 0
[pid 11612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11612] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11612] close(4)                    = 0
[pid 11612] close(3)                    = 0
[pid 11612] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11612] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11612] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11612] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11612] open("./bus", O_RDONLY)     = 3
[pid 11612] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11612] exit_group(0)               = ?
[pid 11612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11613
./strace-static-x86_64: Process 11613 attached
[pid 11613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11613] setpgid(0, 0)               = 0
[pid 11613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11613] write(3, "1000", 4)         = 4
[pid 11613] close(3)                    = 0
[pid 11613] memfd_create("syzkaller", 0) = 3
[pid 11613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11613] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11613] munmap(0x7fd990e3c000, 32768) = 0
[pid 11613] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11613] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11613] close(4)                    = 0
[pid 11613] close(3)                    = 0
[pid 11613] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11613] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11613] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11613] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11613] open("./bus", O_RDONLY)     = 3
[pid 11613] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11613] exit_group(0)               = ?
[pid 11613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11613, 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 11614 attached
, child_tidptr=0x55555567f5d0) = 11614
[pid 11614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11614] setpgid(0, 0)               = 0
[pid 11614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11614] write(3, "1000", 4)         = 4
[pid 11614] close(3)                    = 0
[pid 11614] memfd_create("syzkaller", 0) = 3
[pid 11614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11614] munmap(0x7fd990e3c000, 32768) = 0
[pid 11614] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11614] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11614] close(4)                    = 0
[pid 11614] close(3)                    = 0
[pid 11614] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11614] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11614] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11614] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11614] open("./bus", O_RDONLY)     = 3
[pid 11614] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11614] exit_group(0)               = ?
[pid 11614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11615
./strace-static-x86_64: Process 11615 attached
[pid 11615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11615] setpgid(0, 0)               = 0
[pid 11615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11615] write(3, "1000", 4)         = 4
[pid 11615] close(3)                    = 0
[pid 11615] memfd_create("syzkaller", 0) = 3
[pid 11615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11615] munmap(0x7fd990e3c000, 32768) = 0
[pid 11615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11615] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11615] close(4)                    = 0
[pid 11615] close(3)                    = 0
[pid 11615] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11615] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11615] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11615] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11615] open("./bus", O_RDONLY)     = 3
[pid 11615] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11615] exit_group(0)               = ?
[pid 11615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11615, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11616
./strace-static-x86_64: Process 11616 attached
[pid 11616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11616] setpgid(0, 0)               = 0
[pid 11616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11616] write(3, "1000", 4)         = 4
[pid 11616] close(3)                    = 0
[pid 11616] memfd_create("syzkaller", 0) = 3
[pid 11616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11616] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11616] munmap(0x7fd990e3c000, 32768) = 0
[pid 11616] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11616] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11616] close(4)                    = 0
[pid 11616] close(3)                    = 0
[pid 11616] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11616] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11616] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11616] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11616] open("./bus", O_RDONLY)     = 3
[pid 11616] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11616] exit_group(0)               = ?
[pid 11616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11616, 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 11617 attached
, child_tidptr=0x55555567f5d0) = 11617
[pid 11617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11617] setpgid(0, 0)               = 0
[pid 11617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11617] write(3, "1000", 4)         = 4
[pid 11617] close(3)                    = 0
[pid 11617] memfd_create("syzkaller", 0) = 3
[pid 11617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11617] munmap(0x7fd990e3c000, 32768) = 0
[pid 11617] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11617] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11617] close(4)                    = 0
[pid 11617] close(3)                    = 0
[pid 11617] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11617] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11617] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11617] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11617] open("./bus", O_RDONLY)     = 3
[pid 11617] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11617] exit_group(0)               = ?
[pid 11617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11617, 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=0x55555567f5d0) = 11618
./strace-static-x86_64: Process 11618 attached
[pid 11618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11618] setpgid(0, 0)               = 0
[pid 11618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11618] write(3, "1000", 4)         = 4
[pid 11618] close(3)                    = 0
[pid 11618] memfd_create("syzkaller", 0) = 3
[pid 11618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11618] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11618] munmap(0x7fd990e3c000, 32768) = 0
[pid 11618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11618] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11618] close(4)                    = 0
[pid 11618] close(3)                    = 0
[pid 11618] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11618] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11618] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11618] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11618] open("./bus", O_RDONLY)     = 3
[pid 11618] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11618] exit_group(0)               = ?
[pid 11618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11619
./strace-static-x86_64: Process 11619 attached
[pid 11619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11619] setpgid(0, 0)               = 0
[pid 11619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11619] write(3, "1000", 4)         = 4
[pid 11619] close(3)                    = 0
[pid 11619] memfd_create("syzkaller", 0) = 3
[pid 11619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11619] munmap(0x7fd990e3c000, 32768) = 0
[pid 11619] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11619] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11619] close(4)                    = 0
[pid 11619] close(3)                    = 0
[pid 11619] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11619] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11619] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11619] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11619] open("./bus", O_RDONLY)     = 3
[pid 11619] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11619] exit_group(0)               = ?
[pid 11619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11620 attached
, child_tidptr=0x55555567f5d0) = 11620
[pid 11620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11620] setpgid(0, 0)               = 0
[pid 11620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11620] write(3, "1000", 4)         = 4
[pid 11620] close(3)                    = 0
[pid 11620] memfd_create("syzkaller", 0) = 3
[pid 11620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11620] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11620] munmap(0x7fd990e3c000, 32768) = 0
[pid 11620] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11620] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11620] close(4)                    = 0
[pid 11620] close(3)                    = 0
[pid 11620] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11620] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11620] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11620] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11620] open("./bus", O_RDONLY)     = 3
[pid 11620] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11620] exit_group(0)               = ?
[pid 11620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11621
./strace-static-x86_64: Process 11621 attached
[pid 11621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11621] setpgid(0, 0)               = 0
[pid 11621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11621] write(3, "1000", 4)         = 4
[pid 11621] close(3)                    = 0
[pid 11621] memfd_create("syzkaller", 0) = 3
[pid 11621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11621] munmap(0x7fd990e3c000, 32768) = 0
[pid 11621] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11621] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11621] close(4)                    = 0
[pid 11621] close(3)                    = 0
[pid 11621] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11621] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11621] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11621] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11621] open("./bus", O_RDONLY)     = 3
[pid 11621] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11621] exit_group(0)               = ?
[pid 11621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11621, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11622
./strace-static-x86_64: Process 11622 attached
[pid 11622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11622] setpgid(0, 0)               = 0
[pid 11622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11622] write(3, "1000", 4)         = 4
[pid 11622] close(3)                    = 0
[pid 11622] memfd_create("syzkaller", 0) = 3
[pid 11622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11622] munmap(0x7fd990e3c000, 32768) = 0
[pid 11622] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11622] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11622] close(4)                    = 0
[pid 11622] close(3)                    = 0
[pid 11622] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11622] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11622] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11622] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11622] open("./bus", O_RDONLY)     = 3
[pid 11622] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11622] exit_group(0)               = ?
[pid 11622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11623
./strace-static-x86_64: Process 11623 attached
[pid 11623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11623] setpgid(0, 0)               = 0
[pid 11623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11623] write(3, "1000", 4)         = 4
[pid 11623] close(3)                    = 0
[pid 11623] memfd_create("syzkaller", 0) = 3
[pid 11623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11623] munmap(0x7fd990e3c000, 32768) = 0
[pid 11623] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11623] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11623] close(4)                    = 0
[pid 11623] close(3)                    = 0
[pid 11623] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11623] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11623] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11623] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11623] open("./bus", O_RDONLY)     = 3
[pid 11623] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11623] exit_group(0)               = ?
[pid 11623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11624 attached
, child_tidptr=0x55555567f5d0) = 11624
[pid 11624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11624] setpgid(0, 0)               = 0
[pid 11624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11624] write(3, "1000", 4)         = 4
[pid 11624] close(3)                    = 0
[pid 11624] memfd_create("syzkaller", 0) = 3
[pid 11624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11624] munmap(0x7fd990e3c000, 32768) = 0
[pid 11624] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11624] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11624] close(4)                    = 0
[pid 11624] close(3)                    = 0
[pid 11624] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11624] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11624] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11624] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11624] open("./bus", O_RDONLY)     = 3
[pid 11624] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11624] exit_group(0)               = ?
[pid 11624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11625
./strace-static-x86_64: Process 11625 attached
[pid 11625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11625] setpgid(0, 0)               = 0
[pid 11625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11625] write(3, "1000", 4)         = 4
[pid 11625] close(3)                    = 0
[pid 11625] memfd_create("syzkaller", 0) = 3
[pid 11625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11625] munmap(0x7fd990e3c000, 32768) = 0
[pid 11625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11625] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11625] close(4)                    = 0
[pid 11625] close(3)                    = 0
[pid 11625] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11625] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11625] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11625] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11625] open("./bus", O_RDONLY)     = 3
[pid 11625] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11625] exit_group(0)               = ?
[pid 11625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11625, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11626
./strace-static-x86_64: Process 11626 attached
[pid 11626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11626] setpgid(0, 0)               = 0
[pid 11626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11626] write(3, "1000", 4)         = 4
[pid 11626] close(3)                    = 0
[pid 11626] memfd_create("syzkaller", 0) = 3
[pid 11626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11626] munmap(0x7fd990e3c000, 32768) = 0
[pid 11626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11626] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11626] close(4)                    = 0
[pid 11626] close(3)                    = 0
[pid 11626] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11626] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11626] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11626] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11626] open("./bus", O_RDONLY)     = 3
[pid 11626] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11626] exit_group(0)               = ?
[pid 11626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11626, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11627
./strace-static-x86_64: Process 11627 attached
[pid 11627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11627] setpgid(0, 0)               = 0
[pid 11627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11627] write(3, "1000", 4)         = 4
[pid 11627] close(3)                    = 0
[pid 11627] memfd_create("syzkaller", 0) = 3
[pid 11627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11627] munmap(0x7fd990e3c000, 32768) = 0
[pid 11627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11627] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11627] close(4)                    = 0
[pid 11627] close(3)                    = 0
[pid 11627] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11627] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11627] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11627] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11627] open("./bus", O_RDONLY)     = 3
[pid 11627] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11627] exit_group(0)               = ?
[pid 11627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11627, 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 11628 attached
, child_tidptr=0x55555567f5d0) = 11628
[pid 11628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11628] setpgid(0, 0)               = 0
[pid 11628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11628] write(3, "1000", 4)         = 4
[pid 11628] close(3)                    = 0
[pid 11628] memfd_create("syzkaller", 0) = 3
[pid 11628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11628] munmap(0x7fd990e3c000, 32768) = 0
[pid 11628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11628] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11628] close(4)                    = 0
[pid 11628] close(3)                    = 0
[pid 11628] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11628] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11628] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11628] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11628] open("./bus", O_RDONLY)     = 3
[pid 11628] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11628] exit_group(0)               = ?
[pid 11628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11628, 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 11629 attached
, child_tidptr=0x55555567f5d0) = 11629
[pid 11629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11629] setpgid(0, 0)               = 0
[pid 11629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11629] write(3, "1000", 4)         = 4
[pid 11629] close(3)                    = 0
[pid 11629] memfd_create("syzkaller", 0) = 3
[pid 11629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11629] munmap(0x7fd990e3c000, 32768) = 0
[pid 11629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11629] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11629] close(4)                    = 0
[pid 11629] close(3)                    = 0
[pid 11629] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11629] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11629] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11629] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11629] open("./bus", O_RDONLY)     = 3
[pid 11629] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11629] exit_group(0)               = ?
[pid 11629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11629, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11630
./strace-static-x86_64: Process 11630 attached
[pid 11630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11630] setpgid(0, 0)               = 0
[pid 11630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11630] write(3, "1000", 4)         = 4
[pid 11630] close(3)                    = 0
[pid 11630] memfd_create("syzkaller", 0) = 3
[pid 11630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11630] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11630] munmap(0x7fd990e3c000, 32768) = 0
[pid 11630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11630] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11630] close(4)                    = 0
[pid 11630] close(3)                    = 0
[pid 11630] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11630] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11630] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11630] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11630] open("./bus", O_RDONLY)     = 3
[pid 11630] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11630] exit_group(0)               = ?
[pid 11630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11631
./strace-static-x86_64: Process 11631 attached
[pid 11631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11631] setpgid(0, 0)               = 0
[pid 11631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11631] write(3, "1000", 4)         = 4
[pid 11631] close(3)                    = 0
[pid 11631] memfd_create("syzkaller", 0) = 3
[pid 11631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11631] munmap(0x7fd990e3c000, 32768) = 0
[pid 11631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11631] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11631] close(4)                    = 0
[pid 11631] close(3)                    = 0
[pid 11631] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11631] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11631] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11631] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11631] open("./bus", O_RDONLY)     = 3
[pid 11631] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11631] exit_group(0)               = ?
[pid 11631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11632
./strace-static-x86_64: Process 11632 attached
[pid 11632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11632] setpgid(0, 0)               = 0
[pid 11632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11632] write(3, "1000", 4)         = 4
[pid 11632] close(3)                    = 0
[pid 11632] memfd_create("syzkaller", 0) = 3
[pid 11632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11632] munmap(0x7fd990e3c000, 32768) = 0
[pid 11632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11632] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11632] close(4)                    = 0
[pid 11632] close(3)                    = 0
[pid 11632] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11632] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11632] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11632] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11632] open("./bus", O_RDONLY)     = 3
[pid 11632] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11632] exit_group(0)               = ?
[pid 11632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11632, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11633
./strace-static-x86_64: Process 11633 attached
[pid 11633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11633] setpgid(0, 0)               = 0
[pid 11633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11633] write(3, "1000", 4)         = 4
[pid 11633] close(3)                    = 0
[pid 11633] memfd_create("syzkaller", 0) = 3
[pid 11633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11633] munmap(0x7fd990e3c000, 32768) = 0
[pid 11633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11633] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11633] close(4)                    = 0
[pid 11633] close(3)                    = 0
[pid 11633] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11633] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11633] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11633] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11633] open("./bus", O_RDONLY)     = 3
[pid 11633] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11633] exit_group(0)               = ?
[pid 11633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11634
./strace-static-x86_64: Process 11634 attached
[pid 11634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11634] setpgid(0, 0)               = 0
[pid 11634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11634] write(3, "1000", 4)         = 4
[pid 11634] close(3)                    = 0
[pid 11634] memfd_create("syzkaller", 0) = 3
[pid 11634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11634] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11634] munmap(0x7fd990e3c000, 32768) = 0
[pid 11634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11634] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11634] close(4)                    = 0
[pid 11634] close(3)                    = 0
[pid 11634] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11634] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11634] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11634] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11634] open("./bus", O_RDONLY)     = 3
[pid 11634] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11634] exit_group(0)               = ?
[pid 11634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11635
./strace-static-x86_64: Process 11635 attached
[pid 11635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11635] setpgid(0, 0)               = 0
[pid 11635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11635] write(3, "1000", 4)         = 4
[pid 11635] close(3)                    = 0
[pid 11635] memfd_create("syzkaller", 0) = 3
[pid 11635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11635] munmap(0x7fd990e3c000, 32768) = 0
[pid 11635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11635] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11635] close(4)                    = 0
[pid 11635] close(3)                    = 0
[pid 11635] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11635] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11635] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11635] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11635] open("./bus", O_RDONLY)     = 3
[pid 11635] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11635] exit_group(0)               = ?
[pid 11635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11636
./strace-static-x86_64: Process 11636 attached
[pid 11636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11636] setpgid(0, 0)               = 0
[pid 11636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11636] write(3, "1000", 4)         = 4
[pid 11636] close(3)                    = 0
[pid 11636] memfd_create("syzkaller", 0) = 3
[pid 11636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11636] munmap(0x7fd990e3c000, 32768) = 0
[pid 11636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11636] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11636] close(4)                    = 0
[pid 11636] close(3)                    = 0
[pid 11636] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11636] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11636] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11636] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11636] open("./bus", O_RDONLY)     = 3
[pid 11636] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11636] exit_group(0)               = ?
[pid 11636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11636, 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 11637 attached
, child_tidptr=0x55555567f5d0) = 11637
[pid 11637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11637] setpgid(0, 0)               = 0
[pid 11637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11637] write(3, "1000", 4)         = 4
[pid 11637] close(3)                    = 0
[pid 11637] memfd_create("syzkaller", 0) = 3
[pid 11637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11637] munmap(0x7fd990e3c000, 32768) = 0
[pid 11637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11637] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11637] close(4)                    = 0
[pid 11637] close(3)                    = 0
[pid 11637] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11637] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11637] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11637] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11637] open("./bus", O_RDONLY)     = 3
[pid 11637] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11637] exit_group(0)               = ?
[pid 11637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11637, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11638
./strace-static-x86_64: Process 11638 attached
[pid 11638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11638] setpgid(0, 0)               = 0
[pid 11638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11638] write(3, "1000", 4)         = 4
[pid 11638] close(3)                    = 0
[pid 11638] memfd_create("syzkaller", 0) = 3
[pid 11638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11638] munmap(0x7fd990e3c000, 32768) = 0
[pid 11638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11638] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11638] close(4)                    = 0
[pid 11638] close(3)                    = 0
[pid 11638] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11638] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11638] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11638] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11638] open("./bus", O_RDONLY)     = 3
[pid 11638] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11638] exit_group(0)               = ?
[pid 11638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11639
./strace-static-x86_64: Process 11639 attached
[pid 11639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11639] setpgid(0, 0)               = 0
[pid 11639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11639] write(3, "1000", 4)         = 4
[pid 11639] close(3)                    = 0
[pid 11639] memfd_create("syzkaller", 0) = 3
[pid 11639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11639] munmap(0x7fd990e3c000, 32768) = 0
[pid 11639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11639] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11639] close(4)                    = 0
[pid 11639] close(3)                    = 0
[pid 11639] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11639] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11639] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11639] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11639] open("./bus", O_RDONLY)     = 3
[pid 11639] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11639] exit_group(0)               = ?
[pid 11639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11640
./strace-static-x86_64: Process 11640 attached
[pid 11640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11640] setpgid(0, 0)               = 0
[pid 11640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11640] write(3, "1000", 4)         = 4
[pid 11640] close(3)                    = 0
[pid 11640] memfd_create("syzkaller", 0) = 3
[pid 11640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11640] munmap(0x7fd990e3c000, 32768) = 0
[pid 11640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11640] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11640] close(4)                    = 0
[pid 11640] close(3)                    = 0
[pid 11640] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11640] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11640] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11640] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11640] open("./bus", O_RDONLY)     = 3
[pid 11640] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11640] exit_group(0)               = ?
[pid 11640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11641 attached
, child_tidptr=0x55555567f5d0) = 11641
[pid 11641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11641] setpgid(0, 0)               = 0
[pid 11641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11641] write(3, "1000", 4)         = 4
[pid 11641] close(3)                    = 0
[pid 11641] memfd_create("syzkaller", 0) = 3
[pid 11641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11641] munmap(0x7fd990e3c000, 32768) = 0
[pid 11641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11641] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11641] close(4)                    = 0
[pid 11641] close(3)                    = 0
[pid 11641] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11641] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11641] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11641] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11641] open("./bus", O_RDONLY)     = 3
[pid 11641] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11641] exit_group(0)               = ?
[pid 11641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11641, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11642
./strace-static-x86_64: Process 11642 attached
[pid 11642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11642] setpgid(0, 0)               = 0
[pid 11642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11642] write(3, "1000", 4)         = 4
[pid 11642] close(3)                    = 0
[pid 11642] memfd_create("syzkaller", 0) = 3
[pid 11642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11642] munmap(0x7fd990e3c000, 32768) = 0
[pid 11642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11642] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11642] close(4)                    = 0
[pid 11642] close(3)                    = 0
[pid 11642] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11642] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11642] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11642] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11642] open("./bus", O_RDONLY)     = 3
[pid 11642] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11642] exit_group(0)               = ?
[pid 11642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11642, 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=0x55555567f5d0) = 11643
./strace-static-x86_64: Process 11643 attached
[pid 11643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11643] setpgid(0, 0)               = 0
[pid 11643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11643] write(3, "1000", 4)         = 4
[pid 11643] close(3)                    = 0
[pid 11643] memfd_create("syzkaller", 0) = 3
[pid 11643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11643] munmap(0x7fd990e3c000, 32768) = 0
[pid 11643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11643] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11643] close(4)                    = 0
[pid 11643] close(3)                    = 0
[pid 11643] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11643] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11643] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11643] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11643] open("./bus", O_RDONLY)     = 3
[pid 11643] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11643] exit_group(0)               = ?
[pid 11643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11644 attached
, child_tidptr=0x55555567f5d0) = 11644
[pid 11644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11644] setpgid(0, 0)               = 0
[pid 11644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11644] write(3, "1000", 4)         = 4
[pid 11644] close(3)                    = 0
[pid 11644] memfd_create("syzkaller", 0) = 3
[pid 11644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11644] munmap(0x7fd990e3c000, 32768) = 0
[pid 11644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11644] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11644] close(4)                    = 0
[pid 11644] close(3)                    = 0
[pid 11644] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11644] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11644] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11644] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11644] open("./bus", O_RDONLY)     = 3
[pid 11644] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11644] exit_group(0)               = ?
[pid 11644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11645
./strace-static-x86_64: Process 11645 attached
[pid 11645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11645] setpgid(0, 0)               = 0
[pid 11645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11645] write(3, "1000", 4)         = 4
[pid 11645] close(3)                    = 0
[pid 11645] memfd_create("syzkaller", 0) = 3
[pid 11645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11645] munmap(0x7fd990e3c000, 32768) = 0
[pid 11645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11645] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11645] close(4)                    = 0
[pid 11645] close(3)                    = 0
[pid 11645] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11645] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11645] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11645] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11645] open("./bus", O_RDONLY)     = 3
[pid 11645] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11645] exit_group(0)               = ?
[pid 11645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11646 attached
, child_tidptr=0x55555567f5d0) = 11646
[pid 11646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11646] setpgid(0, 0)               = 0
[pid 11646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11646] write(3, "1000", 4)         = 4
[pid 11646] close(3)                    = 0
[pid 11646] memfd_create("syzkaller", 0) = 3
[pid 11646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11646] munmap(0x7fd990e3c000, 32768) = 0
[pid 11646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11646] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11646] close(4)                    = 0
[pid 11646] close(3)                    = 0
[pid 11646] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11646] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11646] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11646] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11646] open("./bus", O_RDONLY)     = 3
[pid 11646] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11646] exit_group(0)               = ?
[pid 11646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11647
./strace-static-x86_64: Process 11647 attached
[pid 11647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11647] setpgid(0, 0)               = 0
[pid 11647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11647] write(3, "1000", 4)         = 4
[pid 11647] close(3)                    = 0
[pid 11647] memfd_create("syzkaller", 0) = 3
[pid 11647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11647] munmap(0x7fd990e3c000, 32768) = 0
[pid 11647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11647] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11647] close(4)                    = 0
[pid 11647] close(3)                    = 0
[pid 11647] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11647] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11647] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11647] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11647] open("./bus", O_RDONLY)     = 3
[pid 11647] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11647] exit_group(0)               = ?
[pid 11647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11647, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11648
./strace-static-x86_64: Process 11648 attached
[pid 11648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11648] setpgid(0, 0)               = 0
[pid 11648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11648] write(3, "1000", 4)         = 4
[pid 11648] close(3)                    = 0
[pid 11648] memfd_create("syzkaller", 0) = 3
[pid 11648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11648] munmap(0x7fd990e3c000, 32768) = 0
[pid 11648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11648] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11648] close(4)                    = 0
[pid 11648] close(3)                    = 0
[pid 11648] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11648] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11648] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11648] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11648] open("./bus", O_RDONLY)     = 3
[pid 11648] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11648] exit_group(0)               = ?
[pid 11648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11648, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11649
./strace-static-x86_64: Process 11649 attached
[pid 11649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11649] setpgid(0, 0)               = 0
[pid 11649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11649] write(3, "1000", 4)         = 4
[pid 11649] close(3)                    = 0
[pid 11649] memfd_create("syzkaller", 0) = 3
[pid 11649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11649] munmap(0x7fd990e3c000, 32768) = 0
[pid 11649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11649] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11649] close(4)                    = 0
[pid 11649] close(3)                    = 0
[pid 11649] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11649] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11649] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11649] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11649] open("./bus", O_RDONLY)     = 3
[pid 11649] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11649] exit_group(0)               = ?
[pid 11649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11650
./strace-static-x86_64: Process 11650 attached
[pid 11650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11650] setpgid(0, 0)               = 0
[pid 11650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11650] write(3, "1000", 4)         = 4
[pid 11650] close(3)                    = 0
[pid 11650] memfd_create("syzkaller", 0) = 3
[pid 11650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11650] munmap(0x7fd990e3c000, 32768) = 0
[pid 11650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11650] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11650] close(4)                    = 0
[pid 11650] close(3)                    = 0
[pid 11650] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11650] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11650] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11650] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11650] open("./bus", O_RDONLY)     = 3
[pid 11650] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11650] exit_group(0)               = ?
[pid 11650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11650, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11651
./strace-static-x86_64: Process 11651 attached
[pid 11651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11651] setpgid(0, 0)               = 0
[pid 11651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11651] write(3, "1000", 4)         = 4
[pid 11651] close(3)                    = 0
[pid 11651] memfd_create("syzkaller", 0) = 3
[pid 11651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11651] munmap(0x7fd990e3c000, 32768) = 0
[pid 11651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11651] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11651] close(4)                    = 0
[pid 11651] close(3)                    = 0
[pid 11651] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11651] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11651] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11651] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11651] open("./bus", O_RDONLY)     = 3
[pid 11651] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11651] exit_group(0)               = ?
[pid 11651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11651, 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=0x55555567f5d0) = 11652
./strace-static-x86_64: Process 11652 attached
[pid 11652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11652] setpgid(0, 0)               = 0
[pid 11652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11652] write(3, "1000", 4)         = 4
[pid 11652] close(3)                    = 0
[pid 11652] memfd_create("syzkaller", 0) = 3
[pid 11652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11652] munmap(0x7fd990e3c000, 32768) = 0
[pid 11652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11652] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11652] close(4)                    = 0
[pid 11652] close(3)                    = 0
[pid 11652] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11652] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11652] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11652] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11652] open("./bus", O_RDONLY)     = 3
[pid 11652] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11652] exit_group(0)               = ?
[pid 11652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11653
./strace-static-x86_64: Process 11653 attached
[pid 11653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11653] setpgid(0, 0)               = 0
[pid 11653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11653] write(3, "1000", 4)         = 4
[pid 11653] close(3)                    = 0
[pid 11653] memfd_create("syzkaller", 0) = 3
[pid 11653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11653] munmap(0x7fd990e3c000, 32768) = 0
[pid 11653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11653] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11653] close(4)                    = 0
[pid 11653] close(3)                    = 0
[pid 11653] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11653] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11653] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11653] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11653] open("./bus", O_RDONLY)     = 3
[pid 11653] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11653] exit_group(0)               = ?
[pid 11653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11654 attached
 <unfinished ...>
[pid 11654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11654] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11654
[pid 11654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11654] write(3, "1000", 4)         = 4
[pid 11654] close(3)                    = 0
[pid 11654] memfd_create("syzkaller", 0) = 3
[pid 11654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11654] munmap(0x7fd990e3c000, 32768) = 0
[pid 11654] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11654] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11654] close(4)                    = 0
[pid 11654] close(3)                    = 0
[pid 11654] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11654] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11654] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11654] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11654] open("./bus", O_RDONLY)     = 3
[pid 11654] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11654] exit_group(0)               = ?
[pid 11654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11654, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11655 attached
, child_tidptr=0x55555567f5d0) = 11655
[pid 11655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11655] setpgid(0, 0)               = 0
[pid 11655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11655] write(3, "1000", 4)         = 4
[pid 11655] close(3)                    = 0
[pid 11655] memfd_create("syzkaller", 0) = 3
[pid 11655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11655] munmap(0x7fd990e3c000, 32768) = 0
[pid 11655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11655] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11655] close(4)                    = 0
[pid 11655] close(3)                    = 0
[pid 11655] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11655] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11655] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11655] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11655] open("./bus", O_RDONLY)     = 3
[pid 11655] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11655] exit_group(0)               = ?
[pid 11655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11655, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11656
./strace-static-x86_64: Process 11656 attached
[pid 11656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11656] setpgid(0, 0)               = 0
[pid 11656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11656] write(3, "1000", 4)         = 4
[pid 11656] close(3)                    = 0
[pid 11656] memfd_create("syzkaller", 0) = 3
[pid 11656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11656] munmap(0x7fd990e3c000, 32768) = 0
[pid 11656] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11656] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11656] close(4)                    = 0
[pid 11656] close(3)                    = 0
[pid 11656] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11656] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11656] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11656] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11656] open("./bus", O_RDONLY)     = 3
[pid 11656] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11656] exit_group(0)               = ?
[pid 11656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11657
./strace-static-x86_64: Process 11657 attached
[pid 11657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11657] setpgid(0, 0)               = 0
[pid 11657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11657] write(3, "1000", 4)         = 4
[pid 11657] close(3)                    = 0
[pid 11657] memfd_create("syzkaller", 0) = 3
[pid 11657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11657] munmap(0x7fd990e3c000, 32768) = 0
[pid 11657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11657] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11657] close(4)                    = 0
[pid 11657] close(3)                    = 0
[pid 11657] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11657] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11657] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11657] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11657] open("./bus", O_RDONLY)     = 3
[pid 11657] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11657] exit_group(0)               = ?
[pid 11657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11658
./strace-static-x86_64: Process 11658 attached
[pid 11658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11658] setpgid(0, 0)               = 0
[pid 11658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11658] write(3, "1000", 4)         = 4
[pid 11658] close(3)                    = 0
[pid 11658] memfd_create("syzkaller", 0) = 3
[pid 11658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11658] munmap(0x7fd990e3c000, 32768) = 0
[pid 11658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11658] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11658] close(4)                    = 0
[pid 11658] close(3)                    = 0
[pid 11658] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11658] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11658] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11658] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11658] open("./bus", O_RDONLY)     = 3
[pid 11658] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11658] exit_group(0)               = ?
[pid 11658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11659 attached
, child_tidptr=0x55555567f5d0) = 11659
[pid 11659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11659] setpgid(0, 0)               = 0
[pid 11659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11659] write(3, "1000", 4)         = 4
[pid 11659] close(3)                    = 0
[pid 11659] memfd_create("syzkaller", 0) = 3
[pid 11659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11659] munmap(0x7fd990e3c000, 32768) = 0
[pid 11659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11659] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11659] close(4)                    = 0
[pid 11659] close(3)                    = 0
[pid 11659] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11659] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11659] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11659] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11659] open("./bus", O_RDONLY)     = 3
[pid 11659] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11659] exit_group(0)               = ?
[pid 11659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11659, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11660
./strace-static-x86_64: Process 11660 attached
[pid 11660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11660] setpgid(0, 0)               = 0
[pid 11660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11660] write(3, "1000", 4)         = 4
[pid 11660] close(3)                    = 0
[pid 11660] memfd_create("syzkaller", 0) = 3
[pid 11660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11660] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11660] munmap(0x7fd990e3c000, 32768) = 0
[pid 11660] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11660] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11660] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11660] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11660] close(4)                    = 0
[pid 11660] close(3)                    = 0
[pid 11660] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11660] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11660] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11660] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11660] open("./bus", O_RDONLY)     = 3
[pid 11660] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11660] exit_group(0)               = ?
[pid 11660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11660, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11661 attached
, child_tidptr=0x55555567f5d0) = 11661
[pid 11661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11661] setpgid(0, 0)               = 0
[pid 11661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11661] write(3, "1000", 4)         = 4
[pid 11661] close(3)                    = 0
[pid 11661] memfd_create("syzkaller", 0) = 3
[pid 11661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11661] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11661] munmap(0x7fd990e3c000, 32768) = 0
[pid 11661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11661] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11661] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11661] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11661] close(4)                    = 0
[pid 11661] close(3)                    = 0
[pid 11661] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11661] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11661] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11661] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11661] open("./bus", O_RDONLY)     = 3
[pid 11661] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11661] exit_group(0)               = ?
[pid 11661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11661, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11662 attached
, child_tidptr=0x55555567f5d0) = 11662
[pid 11662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11662] setpgid(0, 0)               = 0
[pid 11662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11662] write(3, "1000", 4)         = 4
[pid 11662] close(3)                    = 0
[pid 11662] memfd_create("syzkaller", 0) = 3
[pid 11662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11662] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11662] munmap(0x7fd990e3c000, 32768) = 0
[pid 11662] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11662] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11662] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11662] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11662] close(4)                    = 0
[pid 11662] close(3)                    = 0
[pid 11662] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11662] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11662] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11662] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11662] open("./bus", O_RDONLY)     = 3
[pid 11662] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11662] exit_group(0)               = ?
[pid 11662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11662, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11663 attached
, child_tidptr=0x55555567f5d0) = 11663
[pid 11663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11663] setpgid(0, 0)               = 0
[pid 11663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11663] write(3, "1000", 4)         = 4
[pid 11663] close(3)                    = 0
[pid 11663] memfd_create("syzkaller", 0) = 3
[pid 11663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11663] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11663] munmap(0x7fd990e3c000, 32768) = 0
[pid 11663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11663] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11663] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11663] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11663] close(4)                    = 0
[pid 11663] close(3)                    = 0
[pid 11663] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11663] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11663] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11663] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11663] open("./bus", O_RDONLY)     = 3
[pid 11663] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11663] exit_group(0)               = ?
[pid 11663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11663, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11664
./strace-static-x86_64: Process 11664 attached
[pid 11664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11664] setpgid(0, 0)               = 0
[pid 11664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11664] write(3, "1000", 4)         = 4
[pid 11664] close(3)                    = 0
[pid 11664] memfd_create("syzkaller", 0) = 3
[pid 11664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11664] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11664] munmap(0x7fd990e3c000, 32768) = 0
[pid 11664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11664] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11664] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11664] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11664] close(4)                    = 0
[pid 11664] close(3)                    = 0
[pid 11664] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11664] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11664] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11664] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11664] open("./bus", O_RDONLY)     = 3
[pid 11664] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11664] exit_group(0)               = ?
[pid 11664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11664, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11665
./strace-static-x86_64: Process 11665 attached
[pid 11665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11665] setpgid(0, 0)               = 0
[pid 11665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11665] write(3, "1000", 4)         = 4
[pid 11665] close(3)                    = 0
[pid 11665] memfd_create("syzkaller", 0) = 3
[pid 11665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11665] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11665] munmap(0x7fd990e3c000, 32768) = 0
[pid 11665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11665] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11665] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11665] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11665] close(4)                    = 0
[pid 11665] close(3)                    = 0
[pid 11665] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11665] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11665] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11665] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11665] open("./bus", O_RDONLY)     = 3
[pid 11665] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11665] exit_group(0)               = ?
[pid 11665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11665, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11666
./strace-static-x86_64: Process 11666 attached
[pid 11666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11666] setpgid(0, 0)               = 0
[pid 11666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11666] write(3, "1000", 4)         = 4
[pid 11666] close(3)                    = 0
[pid 11666] memfd_create("syzkaller", 0) = 3
[pid 11666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11666] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11666] munmap(0x7fd990e3c000, 32768) = 0
[pid 11666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11666] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11666] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11666] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11666] close(4)                    = 0
[pid 11666] close(3)                    = 0
[pid 11666] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11666] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11666] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11666] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11666] open("./bus", O_RDONLY)     = 3
[pid 11666] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11666] exit_group(0)               = ?
[pid 11666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11666, 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=0x55555567f5d0) = 11667
./strace-static-x86_64: Process 11667 attached
[pid 11667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11667] setpgid(0, 0)               = 0
[pid 11667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11667] write(3, "1000", 4)         = 4
[pid 11667] close(3)                    = 0
[pid 11667] memfd_create("syzkaller", 0) = 3
[pid 11667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11667] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11667] munmap(0x7fd990e3c000, 32768) = 0
[pid 11667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11667] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11667] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11667] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11667] close(4)                    = 0
[pid 11667] close(3)                    = 0
[pid 11667] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11667] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11667] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11667] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11667] open("./bus", O_RDONLY)     = 3
[pid 11667] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11667] exit_group(0)               = ?
[pid 11667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11667, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11668 attached
, child_tidptr=0x55555567f5d0) = 11668
[pid 11668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11668] setpgid(0, 0)               = 0
[pid 11668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11668] write(3, "1000", 4)         = 4
[pid 11668] close(3)                    = 0
[pid 11668] memfd_create("syzkaller", 0) = 3
[pid 11668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11668] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11668] munmap(0x7fd990e3c000, 32768) = 0
[pid 11668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11668] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11668] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11668] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11668] close(4)                    = 0
[pid 11668] close(3)                    = 0
[pid 11668] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11668] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11668] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11668] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11668] open("./bus", O_RDONLY)     = 3
[pid 11668] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11668] exit_group(0)               = ?
[pid 11668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11668, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11669
./strace-static-x86_64: Process 11669 attached
[pid 11669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11669] setpgid(0, 0)               = 0
[pid 11669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11669] write(3, "1000", 4)         = 4
[pid 11669] close(3)                    = 0
[pid 11669] memfd_create("syzkaller", 0) = 3
[pid 11669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11669] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11669] munmap(0x7fd990e3c000, 32768) = 0
[pid 11669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11669] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11669] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11669] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11669] close(4)                    = 0
[pid 11669] close(3)                    = 0
[pid 11669] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11669] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11669] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11669] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11669] open("./bus", O_RDONLY)     = 3
[pid 11669] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11669] exit_group(0)               = ?
[pid 11669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11669, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11670 attached
, child_tidptr=0x55555567f5d0) = 11670
[pid 11670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11670] setpgid(0, 0)               = 0
[pid 11670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11670] write(3, "1000", 4)         = 4
[pid 11670] close(3)                    = 0
[pid 11670] memfd_create("syzkaller", 0) = 3
[pid 11670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11670] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11670] munmap(0x7fd990e3c000, 32768) = 0
[pid 11670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11670] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11670] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11670] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11670] close(4)                    = 0
[pid 11670] close(3)                    = 0
[pid 11670] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11670] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11670] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11670] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11670] open("./bus", O_RDONLY)     = 3
[pid 11670] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11670] exit_group(0)               = ?
[pid 11670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11670, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11671
./strace-static-x86_64: Process 11671 attached
[pid 11671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11671] setpgid(0, 0)               = 0
[pid 11671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11671] write(3, "1000", 4)         = 4
[pid 11671] close(3)                    = 0
[pid 11671] memfd_create("syzkaller", 0) = 3
[pid 11671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11671] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11671] munmap(0x7fd990e3c000, 32768) = 0
[pid 11671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11671] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11671] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11671] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11671] close(4)                    = 0
[pid 11671] close(3)                    = 0
[pid 11671] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11671] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11671] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11671] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11671] open("./bus", O_RDONLY)     = 3
[pid 11671] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11671] exit_group(0)               = ?
[pid 11671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11671, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11672
./strace-static-x86_64: Process 11672 attached
[pid 11672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11672] setpgid(0, 0)               = 0
[pid 11672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11672] write(3, "1000", 4)         = 4
[pid 11672] close(3)                    = 0
[pid 11672] memfd_create("syzkaller", 0) = 3
[pid 11672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11672] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11672] munmap(0x7fd990e3c000, 32768) = 0
[pid 11672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11672] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11672] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11672] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11672] close(4)                    = 0
[pid 11672] close(3)                    = 0
[pid 11672] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11672] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11672] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11672] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11672] open("./bus", O_RDONLY)     = 3
[pid 11672] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11672] exit_group(0)               = ?
[pid 11672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11672, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11673 attached
, child_tidptr=0x55555567f5d0) = 11673
[pid 11673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11673] setpgid(0, 0)               = 0
[pid 11673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11673] write(3, "1000", 4)         = 4
[pid 11673] close(3)                    = 0
[pid 11673] memfd_create("syzkaller", 0) = 3
[pid 11673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11673] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11673] munmap(0x7fd990e3c000, 32768) = 0
[pid 11673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11673] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11673] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11673] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11673] close(4)                    = 0
[pid 11673] close(3)                    = 0
[pid 11673] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11673] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11673] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11673] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11673] open("./bus", O_RDONLY)     = 3
[pid 11673] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11673] exit_group(0)               = ?
[pid 11673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11673, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11674
./strace-static-x86_64: Process 11674 attached
[pid 11674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11674] setpgid(0, 0)               = 0
[pid 11674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11674] write(3, "1000", 4)         = 4
[pid 11674] close(3)                    = 0
[pid 11674] memfd_create("syzkaller", 0) = 3
[pid 11674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11674] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11674] munmap(0x7fd990e3c000, 32768) = 0
[pid 11674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11674] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11674] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11674] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11674] close(4)                    = 0
[pid 11674] close(3)                    = 0
[pid 11674] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11674] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11674] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11674] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11674] open("./bus", O_RDONLY)     = 3
[pid 11674] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11674] exit_group(0)               = ?
[pid 11674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11674, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11675
./strace-static-x86_64: Process 11675 attached
[pid 11675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11675] setpgid(0, 0)               = 0
[pid 11675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11675] write(3, "1000", 4)         = 4
[pid 11675] close(3)                    = 0
[pid 11675] memfd_create("syzkaller", 0) = 3
[pid 11675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11675] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11675] munmap(0x7fd990e3c000, 32768) = 0
[pid 11675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11675] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11675] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11675] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11675] close(4)                    = 0
[pid 11675] close(3)                    = 0
[pid 11675] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11675] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11675] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11675] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11675] open("./bus", O_RDONLY)     = 3
[pid 11675] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11675] exit_group(0)               = ?
[pid 11675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11675, 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=0x55555567f5d0) = 11676
./strace-static-x86_64: Process 11676 attached
[pid 11676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11676] setpgid(0, 0)               = 0
[pid 11676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11676] write(3, "1000", 4)         = 4
[pid 11676] close(3)                    = 0
[pid 11676] memfd_create("syzkaller", 0) = 3
[pid 11676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11676] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11676] munmap(0x7fd990e3c000, 32768) = 0
[pid 11676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11676] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11676] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11676] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11676] close(4)                    = 0
[pid 11676] close(3)                    = 0
[pid 11676] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11676] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11676] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11676] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11676] open("./bus", O_RDONLY)     = 3
[pid 11676] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11676] exit_group(0)               = ?
[pid 11676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11676, 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=0x55555567f5d0) = 11677
./strace-static-x86_64: Process 11677 attached
[pid 11677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11677] setpgid(0, 0)               = 0
[pid 11677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11677] write(3, "1000", 4)         = 4
[pid 11677] close(3)                    = 0
[pid 11677] memfd_create("syzkaller", 0) = 3
[pid 11677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11677] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11677] munmap(0x7fd990e3c000, 32768) = 0
[pid 11677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11677] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11677] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11677] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11677] close(4)                    = 0
[pid 11677] close(3)                    = 0
[pid 11677] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11677] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11677] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11677] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11677] open("./bus", O_RDONLY)     = 3
[pid 11677] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11677] exit_group(0)               = ?
[pid 11677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11677, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11678
./strace-static-x86_64: Process 11678 attached
[pid 11678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11678] setpgid(0, 0)               = 0
[pid 11678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11678] write(3, "1000", 4)         = 4
[pid 11678] close(3)                    = 0
[pid 11678] memfd_create("syzkaller", 0) = 3
[pid 11678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11678] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11678] munmap(0x7fd990e3c000, 32768) = 0
[pid 11678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11678] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11678] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11678] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11678] close(4)                    = 0
[pid 11678] close(3)                    = 0
[pid 11678] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11678] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11678] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11678] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11678] open("./bus", O_RDONLY)     = 3
[pid 11678] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11678] exit_group(0)               = ?
[pid 11678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11678, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11679
./strace-static-x86_64: Process 11679 attached
[pid 11679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11679] setpgid(0, 0)               = 0
[pid 11679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11679] write(3, "1000", 4)         = 4
[pid 11679] close(3)                    = 0
[pid 11679] memfd_create("syzkaller", 0) = 3
[pid 11679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11679] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11679] munmap(0x7fd990e3c000, 32768) = 0
[pid 11679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11679] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11679] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11679] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11679] close(4)                    = 0
[pid 11679] close(3)                    = 0
[pid 11679] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11679] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11679] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11679] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11679] open("./bus", O_RDONLY)     = 3
[pid 11679] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11679] exit_group(0)               = ?
[pid 11679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11679, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11680
./strace-static-x86_64: Process 11680 attached
[pid 11680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11680] setpgid(0, 0)               = 0
[pid 11680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11680] write(3, "1000", 4)         = 4
[pid 11680] close(3)                    = 0
[pid 11680] memfd_create("syzkaller", 0) = 3
[pid 11680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11680] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11680] munmap(0x7fd990e3c000, 32768) = 0
[pid 11680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11680] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11680] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11680] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11680] close(4)                    = 0
[pid 11680] close(3)                    = 0
[pid 11680] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11680] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11680] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11680] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11680] open("./bus", O_RDONLY)     = 3
[pid 11680] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11680] exit_group(0)               = ?
[pid 11680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11680, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11681
./strace-static-x86_64: Process 11681 attached
[pid 11681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11681] setpgid(0, 0)               = 0
[pid 11681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11681] write(3, "1000", 4)         = 4
[pid 11681] close(3)                    = 0
[pid 11681] memfd_create("syzkaller", 0) = 3
[pid 11681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11681] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11681] munmap(0x7fd990e3c000, 32768) = 0
[pid 11681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11681] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11681] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11681] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11681] close(4)                    = 0
[pid 11681] close(3)                    = 0
[pid 11681] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11681] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11681] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11681] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11681] open("./bus", O_RDONLY)     = 3
[pid 11681] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11681] exit_group(0)               = ?
[pid 11681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11681, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11682
./strace-static-x86_64: Process 11682 attached
[pid 11682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11682] setpgid(0, 0)               = 0
[pid 11682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11682] write(3, "1000", 4)         = 4
[pid 11682] close(3)                    = 0
[pid 11682] memfd_create("syzkaller", 0) = 3
[pid 11682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11682] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11682] munmap(0x7fd990e3c000, 32768) = 0
[pid 11682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11682] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11682] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11682] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11682] close(4)                    = 0
[pid 11682] close(3)                    = 0
[pid 11682] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11682] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11682] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11682] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11682] open("./bus", O_RDONLY)     = 3
[pid 11682] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11682] exit_group(0)               = ?
[pid 11682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11682, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11683
./strace-static-x86_64: Process 11683 attached
[pid 11683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11683] setpgid(0, 0)               = 0
[pid 11683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11683] write(3, "1000", 4)         = 4
[pid 11683] close(3)                    = 0
[pid 11683] memfd_create("syzkaller", 0) = 3
[pid 11683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11683] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11683] munmap(0x7fd990e3c000, 32768) = 0
[pid 11683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11683] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11683] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11683] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11683] close(4)                    = 0
[pid 11683] close(3)                    = 0
[pid 11683] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11683] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11683] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11683] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11683] open("./bus", O_RDONLY)     = 3
[pid 11683] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11683] exit_group(0)               = ?
[pid 11683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11683, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11684
./strace-static-x86_64: Process 11684 attached
[pid 11684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11684] setpgid(0, 0)               = 0
[pid 11684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11684] write(3, "1000", 4)         = 4
[pid 11684] close(3)                    = 0
[pid 11684] memfd_create("syzkaller", 0) = 3
[pid 11684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11684] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11684] munmap(0x7fd990e3c000, 32768) = 0
[pid 11684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11684] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11684] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11684] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11684] close(4)                    = 0
[pid 11684] close(3)                    = 0
[pid 11684] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11684] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11684] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11684] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11684] open("./bus", O_RDONLY)     = 3
[pid 11684] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11684] exit_group(0)               = ?
[pid 11684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11684, 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 11685 attached
, child_tidptr=0x55555567f5d0) = 11685
[pid 11685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11685] setpgid(0, 0)               = 0
[pid 11685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11685] write(3, "1000", 4)         = 4
[pid 11685] close(3)                    = 0
[pid 11685] memfd_create("syzkaller", 0) = 3
[pid 11685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11685] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11685] munmap(0x7fd990e3c000, 32768) = 0
[pid 11685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11685] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11685] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11685] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11685] close(4)                    = 0
[pid 11685] close(3)                    = 0
[pid 11685] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11685] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11685] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11685] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11685] open("./bus", O_RDONLY)     = 3
[pid 11685] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11685] exit_group(0)               = ?
[pid 11685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11685, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11686
./strace-static-x86_64: Process 11686 attached
[pid 11686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11686] setpgid(0, 0)               = 0
[pid 11686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11686] write(3, "1000", 4)         = 4
[pid 11686] close(3)                    = 0
[pid 11686] memfd_create("syzkaller", 0) = 3
[pid 11686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11686] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11686] munmap(0x7fd990e3c000, 32768) = 0
[pid 11686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11686] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11686] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11686] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11686] close(4)                    = 0
[pid 11686] close(3)                    = 0
[pid 11686] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11686] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11686] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11686] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11686] open("./bus", O_RDONLY)     = 3
[pid 11686] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11686] exit_group(0)               = ?
[pid 11686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11686, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11687
./strace-static-x86_64: Process 11687 attached
[pid 11687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11687] setpgid(0, 0)               = 0
[pid 11687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11687] write(3, "1000", 4)         = 4
[pid 11687] close(3)                    = 0
[pid 11687] memfd_create("syzkaller", 0) = 3
[pid 11687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11687] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11687] munmap(0x7fd990e3c000, 32768) = 0
[pid 11687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11687] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11687] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11687] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11687] close(4)                    = 0
[pid 11687] close(3)                    = 0
[pid 11687] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11687] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11687] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11687] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11687] open("./bus", O_RDONLY)     = 3
[pid 11687] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11687] exit_group(0)               = ?
[pid 11687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11687, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11688
./strace-static-x86_64: Process 11688 attached
[pid 11688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11688] setpgid(0, 0)               = 0
[pid 11688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11688] write(3, "1000", 4)         = 4
[pid 11688] close(3)                    = 0
[pid 11688] memfd_create("syzkaller", 0) = 3
[pid 11688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11688] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11688] munmap(0x7fd990e3c000, 32768) = 0
[pid 11688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11688] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11688] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11688] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11688] close(4)                    = 0
[pid 11688] close(3)                    = 0
[pid 11688] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11688] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11688] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11688] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11688] open("./bus", O_RDONLY)     = 3
[pid 11688] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11688] exit_group(0)               = ?
[pid 11688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11688, 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=0x55555567f5d0) = 11689
./strace-static-x86_64: Process 11689 attached
[pid 11689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11689] setpgid(0, 0)               = 0
[pid 11689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11689] write(3, "1000", 4)         = 4
[pid 11689] close(3)                    = 0
[pid 11689] memfd_create("syzkaller", 0) = 3
[pid 11689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11689] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11689] munmap(0x7fd990e3c000, 32768) = 0
[pid 11689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11689] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11689] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11689] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11689] close(4)                    = 0
[pid 11689] close(3)                    = 0
[pid 11689] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11689] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11689] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11689] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11689] open("./bus", O_RDONLY)     = 3
[pid 11689] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11689] exit_group(0)               = ?
[pid 11689] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11689, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11690 attached
, child_tidptr=0x55555567f5d0) = 11690
[pid 11690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11690] setpgid(0, 0)               = 0
[pid 11690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11690] write(3, "1000", 4)         = 4
[pid 11690] close(3)                    = 0
[pid 11690] memfd_create("syzkaller", 0) = 3
[pid 11690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11690] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11690] munmap(0x7fd990e3c000, 32768) = 0
[pid 11690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11690] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11690] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11690] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11690] close(4)                    = 0
[pid 11690] close(3)                    = 0
[pid 11690] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11690] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11690] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11690] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11690] open("./bus", O_RDONLY)     = 3
[pid 11690] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11690] exit_group(0)               = ?
[pid 11690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11690, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11691
./strace-static-x86_64: Process 11691 attached
[pid 11691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11691] setpgid(0, 0)               = 0
[pid 11691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11691] write(3, "1000", 4)         = 4
[pid 11691] close(3)                    = 0
[pid 11691] memfd_create("syzkaller", 0) = 3
[pid 11691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11691] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11691] munmap(0x7fd990e3c000, 32768) = 0
[pid 11691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11691] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11691] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11691] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11691] close(4)                    = 0
[pid 11691] close(3)                    = 0
[pid 11691] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11691] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11691] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11691] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11691] open("./bus", O_RDONLY)     = 3
[pid 11691] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11691] exit_group(0)               = ?
[pid 11691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11691, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11692
./strace-static-x86_64: Process 11692 attached
[pid 11692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11692] setpgid(0, 0)               = 0
[pid 11692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11692] write(3, "1000", 4)         = 4
[pid 11692] close(3)                    = 0
[pid 11692] memfd_create("syzkaller", 0) = 3
[pid 11692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11692] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11692] munmap(0x7fd990e3c000, 32768) = 0
[pid 11692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11692] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11692] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11692] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11692] close(4)                    = 0
[pid 11692] close(3)                    = 0
[pid 11692] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11692] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11692] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11692] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11692] open("./bus", O_RDONLY)     = 3
[pid 11692] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11692] exit_group(0)               = ?
[pid 11692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11692, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11693
./strace-static-x86_64: Process 11693 attached
[pid 11693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11693] setpgid(0, 0)               = 0
[pid 11693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11693] write(3, "1000", 4)         = 4
[pid 11693] close(3)                    = 0
[pid 11693] memfd_create("syzkaller", 0) = 3
[pid 11693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11693] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11693] munmap(0x7fd990e3c000, 32768) = 0
[pid 11693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11693] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11693] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11693] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11693] close(4)                    = 0
[pid 11693] close(3)                    = 0
[pid 11693] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11693] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11693] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11693] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11693] open("./bus", O_RDONLY)     = 3
[pid 11693] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11693] exit_group(0)               = ?
[pid 11693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11693, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11694
./strace-static-x86_64: Process 11694 attached
[pid 11694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11694] setpgid(0, 0)               = 0
[pid 11694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11694] write(3, "1000", 4)         = 4
[pid 11694] close(3)                    = 0
[pid 11694] memfd_create("syzkaller", 0) = 3
[pid 11694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11694] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11694] munmap(0x7fd990e3c000, 32768) = 0
[pid 11694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11694] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11694] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11694] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11694] close(4)                    = 0
[pid 11694] close(3)                    = 0
[pid 11694] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11694] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11694] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11694] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11694] open("./bus", O_RDONLY)     = 3
[pid 11694] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11694] exit_group(0)               = ?
[pid 11694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11694, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11695
./strace-static-x86_64: Process 11695 attached
[pid 11695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11695] setpgid(0, 0)               = 0
[pid 11695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11695] write(3, "1000", 4)         = 4
[pid 11695] close(3)                    = 0
[pid 11695] memfd_create("syzkaller", 0) = 3
[pid 11695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11695] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11695] munmap(0x7fd990e3c000, 32768) = 0
[pid 11695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11695] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11695] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11695] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11695] close(4)                    = 0
[pid 11695] close(3)                    = 0
[pid 11695] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11695] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11695] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11695] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11695] open("./bus", O_RDONLY)     = 3
[pid 11695] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11695] exit_group(0)               = ?
[pid 11695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11695, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11696
./strace-static-x86_64: Process 11696 attached
[pid 11696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11696] setpgid(0, 0)               = 0
[pid 11696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11696] write(3, "1000", 4)         = 4
[pid 11696] close(3)                    = 0
[pid 11696] memfd_create("syzkaller", 0) = 3
[pid 11696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11696] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11696] munmap(0x7fd990e3c000, 32768) = 0
[pid 11696] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11696] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11696] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11696] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11696] close(4)                    = 0
[pid 11696] close(3)                    = 0
[pid 11696] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11696] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11696] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11696] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11696] open("./bus", O_RDONLY)     = 3
[pid 11696] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11696] exit_group(0)               = ?
[pid 11696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11696, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11697
./strace-static-x86_64: Process 11697 attached
[pid 11697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11697] setpgid(0, 0)               = 0
[pid 11697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11697] write(3, "1000", 4)         = 4
[pid 11697] close(3)                    = 0
[pid 11697] memfd_create("syzkaller", 0) = 3
[pid 11697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11697] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11697] munmap(0x7fd990e3c000, 32768) = 0
[pid 11697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11697] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11697] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11697] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11697] close(4)                    = 0
[pid 11697] close(3)                    = 0
[pid 11697] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11697] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11697] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11697] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11697] open("./bus", O_RDONLY)     = 3
[pid 11697] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11697] exit_group(0)               = ?
[pid 11697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11697, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11698 attached
, child_tidptr=0x55555567f5d0) = 11698
[pid 11698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11698] setpgid(0, 0)               = 0
[pid 11698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11698] write(3, "1000", 4)         = 4
[pid 11698] close(3)                    = 0
[pid 11698] memfd_create("syzkaller", 0) = 3
[pid 11698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11698] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11698] munmap(0x7fd990e3c000, 32768) = 0
[pid 11698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11698] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11698] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11698] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11698] close(4)                    = 0
[pid 11698] close(3)                    = 0
[pid 11698] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11698] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11698] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11698] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11698] open("./bus", O_RDONLY)     = 3
[pid 11698] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11698] exit_group(0)               = ?
[pid 11698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11698, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11699
./strace-static-x86_64: Process 11699 attached
[pid 11699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11699] setpgid(0, 0)               = 0
[pid 11699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11699] write(3, "1000", 4)         = 4
[pid 11699] close(3)                    = 0
[pid 11699] memfd_create("syzkaller", 0) = 3
[pid 11699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11699] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11699] munmap(0x7fd990e3c000, 32768) = 0
[pid 11699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11699] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11699] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11699] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11699] close(4)                    = 0
[pid 11699] close(3)                    = 0
[pid 11699] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11699] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11699] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11699] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11699] open("./bus", O_RDONLY)     = 3
[pid 11699] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11699] exit_group(0)               = ?
[pid 11699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11699, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11700 attached
, child_tidptr=0x55555567f5d0) = 11700
[pid 11700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11700] setpgid(0, 0)               = 0
[pid 11700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11700] write(3, "1000", 4)         = 4
[pid 11700] close(3)                    = 0
[pid 11700] memfd_create("syzkaller", 0) = 3
[pid 11700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11700] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11700] munmap(0x7fd990e3c000, 32768) = 0
[pid 11700] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11700] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11700] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11700] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11700] close(4)                    = 0
[pid 11700] close(3)                    = 0
[pid 11700] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11700] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11700] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11700] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11700] open("./bus", O_RDONLY)     = 3
[pid 11700] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11700] exit_group(0)               = ?
[pid 11700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11700, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11701
./strace-static-x86_64: Process 11701 attached
[pid 11701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11701] setpgid(0, 0)               = 0
[pid 11701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11701] write(3, "1000", 4)         = 4
[pid 11701] close(3)                    = 0
[pid 11701] memfd_create("syzkaller", 0) = 3
[pid 11701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11701] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11701] munmap(0x7fd990e3c000, 32768) = 0
[pid 11701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11701] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11701] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11701] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11701] close(4)                    = 0
[pid 11701] close(3)                    = 0
[pid 11701] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11701] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11701] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11701] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11701] open("./bus", O_RDONLY)     = 3
[pid 11701] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11701] exit_group(0)               = ?
[pid 11701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11701, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11702
./strace-static-x86_64: Process 11702 attached
[pid 11702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11702] setpgid(0, 0)               = 0
[pid 11702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11702] write(3, "1000", 4)         = 4
[pid 11702] close(3)                    = 0
[pid 11702] memfd_create("syzkaller", 0) = 3
[pid 11702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11702] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11702] munmap(0x7fd990e3c000, 32768) = 0
[pid 11702] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11702] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11702] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11702] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11702] close(4)                    = 0
[pid 11702] close(3)                    = 0
[pid 11702] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11702] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11702] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11702] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11702] open("./bus", O_RDONLY)     = 3
[pid 11702] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11702] exit_group(0)               = ?
[pid 11702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11702, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11703
./strace-static-x86_64: Process 11703 attached
[pid 11703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11703] setpgid(0, 0)               = 0
[pid 11703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11703] write(3, "1000", 4)         = 4
[pid 11703] close(3)                    = 0
[pid 11703] memfd_create("syzkaller", 0) = 3
[pid 11703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11703] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11703] munmap(0x7fd990e3c000, 32768) = 0
[pid 11703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11703] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11703] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11703] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11703] close(4)                    = 0
[pid 11703] close(3)                    = 0
[pid 11703] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11703] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11703] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11703] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11703] open("./bus", O_RDONLY)     = 3
[pid 11703] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11703] exit_group(0)               = ?
[pid 11703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11703, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11704
./strace-static-x86_64: Process 11704 attached
[pid 11704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11704] setpgid(0, 0)               = 0
[pid 11704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11704] write(3, "1000", 4)         = 4
[pid 11704] close(3)                    = 0
[pid 11704] memfd_create("syzkaller", 0) = 3
[pid 11704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11704] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11704] munmap(0x7fd990e3c000, 32768) = 0
[pid 11704] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11704] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11704] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11704] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11704] close(4)                    = 0
[pid 11704] close(3)                    = 0
[pid 11704] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11704] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11704] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11704] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11704] open("./bus", O_RDONLY)     = 3
[pid 11704] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11704] exit_group(0)               = ?
[pid 11704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11704, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11705 attached
, child_tidptr=0x55555567f5d0) = 11705
[pid 11705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11705] setpgid(0, 0)               = 0
[pid 11705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11705] write(3, "1000", 4)         = 4
[pid 11705] close(3)                    = 0
[pid 11705] memfd_create("syzkaller", 0) = 3
[pid 11705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11705] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11705] munmap(0x7fd990e3c000, 32768) = 0
[pid 11705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11705] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11705] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11705] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11705] close(4)                    = 0
[pid 11705] close(3)                    = 0
[pid 11705] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11705] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11705] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11705] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11705] open("./bus", O_RDONLY)     = 3
[pid 11705] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11705] exit_group(0)               = ?
[pid 11705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11705, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11706
./strace-static-x86_64: Process 11706 attached
[pid 11706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11706] setpgid(0, 0)               = 0
[pid 11706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11706] write(3, "1000", 4)         = 4
[pid 11706] close(3)                    = 0
[pid 11706] memfd_create("syzkaller", 0) = 3
[pid 11706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11706] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11706] munmap(0x7fd990e3c000, 32768) = 0
[pid 11706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11706] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11706] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11706] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11706] close(4)                    = 0
[pid 11706] close(3)                    = 0
[pid 11706] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11706] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11706] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11706] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11706] open("./bus", O_RDONLY)     = 3
[pid 11706] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11706] exit_group(0)               = ?
[pid 11706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11706, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11707
./strace-static-x86_64: Process 11707 attached
[pid 11707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11707] setpgid(0, 0)               = 0
[pid 11707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11707] write(3, "1000", 4)         = 4
[pid 11707] close(3)                    = 0
[pid 11707] memfd_create("syzkaller", 0) = 3
[pid 11707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11707] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11707] munmap(0x7fd990e3c000, 32768) = 0
[pid 11707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11707] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11707] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11707] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11707] close(4)                    = 0
[pid 11707] close(3)                    = 0
[pid 11707] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11707] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11707] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11707] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11707] open("./bus", O_RDONLY)     = 3
[pid 11707] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11707] exit_group(0)               = ?
[pid 11707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11707, 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=0x55555567f5d0) = 11708
./strace-static-x86_64: Process 11708 attached
[pid 11708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11708] setpgid(0, 0)               = 0
[pid 11708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11708] write(3, "1000", 4)         = 4
[pid 11708] close(3)                    = 0
[pid 11708] memfd_create("syzkaller", 0) = 3
[pid 11708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11708] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11708] munmap(0x7fd990e3c000, 32768) = 0
[pid 11708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11708] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11708] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11708] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11708] close(4)                    = 0
[pid 11708] close(3)                    = 0
[pid 11708] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11708] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11708] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11708] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11708] open("./bus", O_RDONLY)     = 3
[pid 11708] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11708] exit_group(0)               = ?
[pid 11708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11708, 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 11709 attached
, child_tidptr=0x55555567f5d0) = 11709
[pid 11709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11709] setpgid(0, 0)               = 0
[pid 11709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11709] write(3, "1000", 4)         = 4
[pid 11709] close(3)                    = 0
[pid 11709] memfd_create("syzkaller", 0) = 3
[pid 11709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11709] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11709] munmap(0x7fd990e3c000, 32768) = 0
[pid 11709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11709] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11709] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11709] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11709] close(4)                    = 0
[pid 11709] close(3)                    = 0
[pid 11709] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11709] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11709] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11709] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11709] open("./bus", O_RDONLY)     = 3
[pid 11709] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11709] exit_group(0)               = ?
[pid 11709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11709, 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=0x55555567f5d0) = 11710
./strace-static-x86_64: Process 11710 attached
[pid 11710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11710] setpgid(0, 0)               = 0
[pid 11710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11710] write(3, "1000", 4)         = 4
[pid 11710] close(3)                    = 0
[pid 11710] memfd_create("syzkaller", 0) = 3
[pid 11710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11710] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11710] munmap(0x7fd990e3c000, 32768) = 0
[pid 11710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11710] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11710] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11710] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11710] close(4)                    = 0
[pid 11710] close(3)                    = 0
[pid 11710] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11710] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11710] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11710] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11710] open("./bus", O_RDONLY)     = 3
[pid 11710] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11710] exit_group(0)               = ?
[pid 11710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11710, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11711
./strace-static-x86_64: Process 11711 attached
[pid 11711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11711] setpgid(0, 0)               = 0
[pid 11711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11711] write(3, "1000", 4)         = 4
[pid 11711] close(3)                    = 0
[pid 11711] memfd_create("syzkaller", 0) = 3
[pid 11711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11711] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11711] munmap(0x7fd990e3c000, 32768) = 0
[pid 11711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11711] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11711] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11711] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11711] close(4)                    = 0
[pid 11711] close(3)                    = 0
[pid 11711] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11711] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11711] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11711] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11711] open("./bus", O_RDONLY)     = 3
[pid 11711] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11711] exit_group(0)               = ?
[pid 11711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11711, 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=0x55555567f5d0) = 11712
./strace-static-x86_64: Process 11712 attached
[pid 11712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11712] setpgid(0, 0)               = 0
[pid 11712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11712] write(3, "1000", 4)         = 4
[pid 11712] close(3)                    = 0
[pid 11712] memfd_create("syzkaller", 0) = 3
[pid 11712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11712] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11712] munmap(0x7fd990e3c000, 32768) = 0
[pid 11712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11712] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11712] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11712] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11712] close(4)                    = 0
[pid 11712] close(3)                    = 0
[pid 11712] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11712] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11712] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11712] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11712] open("./bus", O_RDONLY)     = 3
[pid 11712] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11712] exit_group(0)               = ?
[pid 11712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11712, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11713 attached
, child_tidptr=0x55555567f5d0) = 11713
[pid 11713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11713] setpgid(0, 0)               = 0
[pid 11713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11713] write(3, "1000", 4)         = 4
[pid 11713] close(3)                    = 0
[pid 11713] memfd_create("syzkaller", 0) = 3
[pid 11713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11713] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11713] munmap(0x7fd990e3c000, 32768) = 0
[pid 11713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11713] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11713] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11713] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11713] close(4)                    = 0
[pid 11713] close(3)                    = 0
[pid 11713] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11713] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11713] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11713] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11713] open("./bus", O_RDONLY)     = 3
[pid 11713] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11713] exit_group(0)               = ?
[pid 11713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11713, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11714
./strace-static-x86_64: Process 11714 attached
[pid 11714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11714] setpgid(0, 0)               = 0
[pid 11714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11714] write(3, "1000", 4)         = 4
[pid 11714] close(3)                    = 0
[pid 11714] memfd_create("syzkaller", 0) = 3
[pid 11714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11714] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11714] munmap(0x7fd990e3c000, 32768) = 0
[pid 11714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11714] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11714] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11714] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11714] close(4)                    = 0
[pid 11714] close(3)                    = 0
[pid 11714] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11714] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11714] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11714] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11714] open("./bus", O_RDONLY)     = 3
[pid 11714] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11714] exit_group(0)               = ?
[pid 11714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11714, 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=0x55555567f5d0) = 11715
./strace-static-x86_64: Process 11715 attached
[pid 11715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11715] setpgid(0, 0)               = 0
[pid 11715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11715] write(3, "1000", 4)         = 4
[pid 11715] close(3)                    = 0
[pid 11715] memfd_create("syzkaller", 0) = 3
[pid 11715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11715] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11715] munmap(0x7fd990e3c000, 32768) = 0
[pid 11715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11715] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11715] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11715] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11715] close(4)                    = 0
[pid 11715] close(3)                    = 0
[pid 11715] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11715] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11715] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11715] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11715] open("./bus", O_RDONLY)     = 3
[pid 11715] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11715] exit_group(0)               = ?
[pid 11715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11715, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11716
./strace-static-x86_64: Process 11716 attached
[pid 11716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11716] setpgid(0, 0)               = 0
[pid 11716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11716] write(3, "1000", 4)         = 4
[pid 11716] close(3)                    = 0
[pid 11716] memfd_create("syzkaller", 0) = 3
[pid 11716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11716] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11716] munmap(0x7fd990e3c000, 32768) = 0
[pid 11716] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11716] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11716] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11716] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11716] close(4)                    = 0
[pid 11716] close(3)                    = 0
[pid 11716] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11716] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11716] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11716] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11716] open("./bus", O_RDONLY)     = 3
[pid 11716] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11716] exit_group(0)               = ?
[pid 11716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11716, 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=0x55555567f5d0) = 11717
./strace-static-x86_64: Process 11717 attached
[pid 11717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11717] setpgid(0, 0)               = 0
[pid 11717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11717] write(3, "1000", 4)         = 4
[pid 11717] close(3)                    = 0
[pid 11717] memfd_create("syzkaller", 0) = 3
[pid 11717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11717] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11717] munmap(0x7fd990e3c000, 32768) = 0
[pid 11717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11717] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11717] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11717] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11717] close(4)                    = 0
[pid 11717] close(3)                    = 0
[pid 11717] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11717] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11717] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11717] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11717] open("./bus", O_RDONLY)     = 3
[pid 11717] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11717] exit_group(0)               = ?
[pid 11717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11717, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11718
./strace-static-x86_64: Process 11718 attached
[pid 11718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11718] setpgid(0, 0)               = 0
[pid 11718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11718] write(3, "1000", 4)         = 4
[pid 11718] close(3)                    = 0
[pid 11718] memfd_create("syzkaller", 0) = 3
[pid 11718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11718] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11718] munmap(0x7fd990e3c000, 32768) = 0
[pid 11718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11718] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11718] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11718] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11718] close(4)                    = 0
[pid 11718] close(3)                    = 0
[pid 11718] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11718] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11718] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11718] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11718] open("./bus", O_RDONLY)     = 3
[pid 11718] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11718] exit_group(0)               = ?
[pid 11718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11718, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11719
./strace-static-x86_64: Process 11719 attached
[pid 11719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11719] setpgid(0, 0)               = 0
[pid 11719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11719] write(3, "1000", 4)         = 4
[pid 11719] close(3)                    = 0
[pid 11719] memfd_create("syzkaller", 0) = 3
[pid 11719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11719] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11719] munmap(0x7fd990e3c000, 32768) = 0
[pid 11719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11719] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11719] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11719] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11719] close(4)                    = 0
[pid 11719] close(3)                    = 0
[pid 11719] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11719] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11719] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11719] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11719] open("./bus", O_RDONLY)     = 3
[pid 11719] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11719] exit_group(0)               = ?
[pid 11719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11719, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11720 attached
, child_tidptr=0x55555567f5d0) = 11720
[pid 11720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11720] setpgid(0, 0)               = 0
[pid 11720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11720] write(3, "1000", 4)         = 4
[pid 11720] close(3)                    = 0
[pid 11720] memfd_create("syzkaller", 0) = 3
[pid 11720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11720] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11720] munmap(0x7fd990e3c000, 32768) = 0
[pid 11720] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11720] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11720] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11720] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11720] close(4)                    = 0
[pid 11720] close(3)                    = 0
[pid 11720] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11720] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11720] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11720] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11720] open("./bus", O_RDONLY)     = 3
[pid 11720] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11720] exit_group(0)               = ?
[pid 11720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11720, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11721 attached
, child_tidptr=0x55555567f5d0) = 11721
[pid 11721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11721] setpgid(0, 0)               = 0
[pid 11721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11721] write(3, "1000", 4)         = 4
[pid 11721] close(3)                    = 0
[pid 11721] memfd_create("syzkaller", 0) = 3
[pid 11721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11721] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11721] munmap(0x7fd990e3c000, 32768) = 0
[pid 11721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11721] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11721] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11721] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11721] close(4)                    = 0
[pid 11721] close(3)                    = 0
[pid 11721] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11721] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11721] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11721] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11721] open("./bus", O_RDONLY)     = 3
[pid 11721] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11721] exit_group(0)               = ?
[pid 11721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11721, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11722
./strace-static-x86_64: Process 11722 attached
[pid 11722] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11722] setpgid(0, 0)               = 0
[pid 11722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11722] write(3, "1000", 4)         = 4
[pid 11722] close(3)                    = 0
[pid 11722] memfd_create("syzkaller", 0) = 3
[pid 11722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11722] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11722] munmap(0x7fd990e3c000, 32768) = 0
[pid 11722] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11722] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11722] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11722] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11722] close(4)                    = 0
[pid 11722] close(3)                    = 0
[pid 11722] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11722] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11722] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11722] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11722] open("./bus", O_RDONLY)     = 3
[pid 11722] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11722] exit_group(0)               = ?
[pid 11722] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11722, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11723
./strace-static-x86_64: Process 11723 attached
[pid 11723] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11723] setpgid(0, 0)               = 0
[pid 11723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11723] write(3, "1000", 4)         = 4
[pid 11723] close(3)                    = 0
[pid 11723] memfd_create("syzkaller", 0) = 3
[pid 11723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11723] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11723] munmap(0x7fd990e3c000, 32768) = 0
[pid 11723] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11723] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11723] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11723] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11723] close(4)                    = 0
[pid 11723] close(3)                    = 0
[pid 11723] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11723] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11723] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11723] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11723] open("./bus", O_RDONLY)     = 3
[pid 11723] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11723] exit_group(0)               = ?
[pid 11723] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11723, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11724
./strace-static-x86_64: Process 11724 attached
[pid 11724] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11724] setpgid(0, 0)               = 0
[pid 11724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11724] write(3, "1000", 4)         = 4
[pid 11724] close(3)                    = 0
[pid 11724] memfd_create("syzkaller", 0) = 3
[pid 11724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11724] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11724] munmap(0x7fd990e3c000, 32768) = 0
[pid 11724] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11724] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11724] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11724] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11724] close(4)                    = 0
[pid 11724] close(3)                    = 0
[pid 11724] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11724] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11724] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11724] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11724] open("./bus", O_RDONLY)     = 3
[pid 11724] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11724] exit_group(0)               = ?
[pid 11724] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11724, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11725
./strace-static-x86_64: Process 11725 attached
[pid 11725] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11725] setpgid(0, 0)               = 0
[pid 11725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11725] write(3, "1000", 4)         = 4
[pid 11725] close(3)                    = 0
[pid 11725] memfd_create("syzkaller", 0) = 3
[pid 11725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11725] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11725] munmap(0x7fd990e3c000, 32768) = 0
[pid 11725] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11725] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11725] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11725] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11725] close(4)                    = 0
[pid 11725] close(3)                    = 0
[pid 11725] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11725] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11725] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11725] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11725] open("./bus", O_RDONLY)     = 3
[pid 11725] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11725] exit_group(0)               = ?
[pid 11725] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11725, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11726
./strace-static-x86_64: Process 11726 attached
[pid 11726] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11726] setpgid(0, 0)               = 0
[pid 11726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11726] write(3, "1000", 4)         = 4
[pid 11726] close(3)                    = 0
[pid 11726] memfd_create("syzkaller", 0) = 3
[pid 11726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11726] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11726] munmap(0x7fd990e3c000, 32768) = 0
[pid 11726] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11726] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11726] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11726] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11726] close(4)                    = 0
[pid 11726] close(3)                    = 0
[pid 11726] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11726] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11726] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11726] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11726] open("./bus", O_RDONLY)     = 3
[pid 11726] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11726] exit_group(0)               = ?
[pid 11726] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11726, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11727
./strace-static-x86_64: Process 11727 attached
[pid 11727] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11727] setpgid(0, 0)               = 0
[pid 11727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11727] write(3, "1000", 4)         = 4
[pid 11727] close(3)                    = 0
[pid 11727] memfd_create("syzkaller", 0) = 3
[pid 11727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11727] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11727] munmap(0x7fd990e3c000, 32768) = 0
[pid 11727] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11727] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11727] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11727] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11727] close(4)                    = 0
[pid 11727] close(3)                    = 0
[pid 11727] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11727] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11727] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11727] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11727] open("./bus", O_RDONLY)     = 3
[pid 11727] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11727] exit_group(0)               = ?
[pid 11727] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11727, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11728
./strace-static-x86_64: Process 11728 attached
[pid 11728] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11728] setpgid(0, 0)               = 0
[pid 11728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11728] write(3, "1000", 4)         = 4
[pid 11728] close(3)                    = 0
[pid 11728] memfd_create("syzkaller", 0) = 3
[pid 11728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11728] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11728] munmap(0x7fd990e3c000, 32768) = 0
[pid 11728] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11728] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11728] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11728] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11728] close(4)                    = 0
[pid 11728] close(3)                    = 0
[pid 11728] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11728] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11728] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11728] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11728] open("./bus", O_RDONLY)     = 3
[pid 11728] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11728] exit_group(0)               = ?
[pid 11728] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11728, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11729
./strace-static-x86_64: Process 11729 attached
[pid 11729] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11729] setpgid(0, 0)               = 0
[pid 11729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11729] write(3, "1000", 4)         = 4
[pid 11729] close(3)                    = 0
[pid 11729] memfd_create("syzkaller", 0) = 3
[pid 11729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11729] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11729] munmap(0x7fd990e3c000, 32768) = 0
[pid 11729] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11729] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11729] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11729] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11729] close(4)                    = 0
[pid 11729] close(3)                    = 0
[pid 11729] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11729] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11729] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11729] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11729] open("./bus", O_RDONLY)     = 3
[pid 11729] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11729] exit_group(0)               = ?
[pid 11729] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11729, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11730
./strace-static-x86_64: Process 11730 attached
[pid 11730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11730] setpgid(0, 0)               = 0
[pid 11730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11730] write(3, "1000", 4)         = 4
[pid 11730] close(3)                    = 0
[pid 11730] memfd_create("syzkaller", 0) = 3
[pid 11730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11730] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11730] munmap(0x7fd990e3c000, 32768) = 0
[pid 11730] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11730] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11730] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11730] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11730] close(4)                    = 0
[pid 11730] close(3)                    = 0
[pid 11730] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11730] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11730] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11730] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11730] open("./bus", O_RDONLY)     = 3
[pid 11730] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11730] exit_group(0)               = ?
[pid 11730] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11730, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11731
./strace-static-x86_64: Process 11731 attached
[pid 11731] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11731] setpgid(0, 0)               = 0
[pid 11731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11731] write(3, "1000", 4)         = 4
[pid 11731] close(3)                    = 0
[pid 11731] memfd_create("syzkaller", 0) = 3
[pid 11731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11731] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11731] munmap(0x7fd990e3c000, 32768) = 0
[pid 11731] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11731] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11731] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11731] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11731] close(4)                    = 0
[pid 11731] close(3)                    = 0
[pid 11731] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11731] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11731] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11731] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11731] open("./bus", O_RDONLY)     = 3
[pid 11731] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11731] exit_group(0)               = ?
[pid 11731] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11731, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11732
./strace-static-x86_64: Process 11732 attached
[pid 11732] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11732] setpgid(0, 0)               = 0
[pid 11732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11732] write(3, "1000", 4)         = 4
[pid 11732] close(3)                    = 0
[pid 11732] memfd_create("syzkaller", 0) = 3
[pid 11732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11732] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11732] munmap(0x7fd990e3c000, 32768) = 0
[pid 11732] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11732] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11732] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11732] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11732] close(4)                    = 0
[pid 11732] close(3)                    = 0
[pid 11732] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11732] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11732] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11732] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11732] open("./bus", O_RDONLY)     = 3
[pid 11732] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11732] exit_group(0)               = ?
[pid 11732] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11732, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11733
./strace-static-x86_64: Process 11733 attached
[pid 11733] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11733] setpgid(0, 0)               = 0
[pid 11733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11733] write(3, "1000", 4)         = 4
[pid 11733] close(3)                    = 0
[pid 11733] memfd_create("syzkaller", 0) = 3
[pid 11733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11733] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11733] munmap(0x7fd990e3c000, 32768) = 0
[pid 11733] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11733] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11733] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11733] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11733] close(4)                    = 0
[pid 11733] close(3)                    = 0
[pid 11733] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11733] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11733] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11733] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11733] open("./bus", O_RDONLY)     = 3
[pid 11733] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11733] exit_group(0)               = ?
[pid 11733] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11733, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11734 attached
, child_tidptr=0x55555567f5d0) = 11734
[pid 11734] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11734] setpgid(0, 0)               = 0
[pid 11734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11734] write(3, "1000", 4)         = 4
[pid 11734] close(3)                    = 0
[pid 11734] memfd_create("syzkaller", 0) = 3
[pid 11734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11734] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11734] munmap(0x7fd990e3c000, 32768) = 0
[pid 11734] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11734] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11734] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11734] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11734] close(4)                    = 0
[pid 11734] close(3)                    = 0
[pid 11734] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11734] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11734] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11734] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11734] open("./bus", O_RDONLY)     = 3
[pid 11734] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11734] exit_group(0)               = ?
[pid 11734] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11734, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11735
./strace-static-x86_64: Process 11735 attached
[pid 11735] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11735] setpgid(0, 0)               = 0
[pid 11735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11735] write(3, "1000", 4)         = 4
[pid 11735] close(3)                    = 0
[pid 11735] memfd_create("syzkaller", 0) = 3
[pid 11735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11735] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11735] munmap(0x7fd990e3c000, 32768) = 0
[pid 11735] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11735] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11735] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11735] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11735] close(4)                    = 0
[pid 11735] close(3)                    = 0
[pid 11735] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11735] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11735] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11735] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11735] open("./bus", O_RDONLY)     = 3
[pid 11735] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11735] exit_group(0)               = ?
[pid 11735] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11735, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11736 attached
, child_tidptr=0x55555567f5d0) = 11736
[pid 11736] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11736] setpgid(0, 0)               = 0
[pid 11736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11736] write(3, "1000", 4)         = 4
[pid 11736] close(3)                    = 0
[pid 11736] memfd_create("syzkaller", 0) = 3
[pid 11736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11736] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11736] munmap(0x7fd990e3c000, 32768) = 0
[pid 11736] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11736] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11736] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11736] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11736] close(4)                    = 0
[pid 11736] close(3)                    = 0
[pid 11736] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11736] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11736] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11736] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11736] open("./bus", O_RDONLY)     = 3
[pid 11736] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11736] exit_group(0)               = ?
[pid 11736] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11736, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11737 attached
, child_tidptr=0x55555567f5d0) = 11737
[pid 11737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11737] setpgid(0, 0)               = 0
[pid 11737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11737] write(3, "1000", 4)         = 4
[pid 11737] close(3)                    = 0
[pid 11737] memfd_create("syzkaller", 0) = 3
[pid 11737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11737] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11737] munmap(0x7fd990e3c000, 32768) = 0
[pid 11737] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11737] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11737] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11737] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11737] close(4)                    = 0
[pid 11737] close(3)                    = 0
[pid 11737] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11737] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11737] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11737] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11737] open("./bus", O_RDONLY)     = 3
[pid 11737] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11737] exit_group(0)               = ?
[pid 11737] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11737, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11738 attached
, child_tidptr=0x55555567f5d0) = 11738
[pid 11738] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11738] setpgid(0, 0)               = 0
[pid 11738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11738] write(3, "1000", 4)         = 4
[pid 11738] close(3)                    = 0
[pid 11738] memfd_create("syzkaller", 0) = 3
[pid 11738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11738] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11738] munmap(0x7fd990e3c000, 32768) = 0
[pid 11738] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11738] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11738] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11738] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11738] close(4)                    = 0
[pid 11738] close(3)                    = 0
[pid 11738] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11738] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11738] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11738] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11738] open("./bus", O_RDONLY)     = 3
[pid 11738] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11738] exit_group(0)               = ?
[pid 11738] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11738, 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=0x55555567f5d0) = 11739
./strace-static-x86_64: Process 11739 attached
[pid 11739] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11739] setpgid(0, 0)               = 0
[pid 11739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11739] write(3, "1000", 4)         = 4
[pid 11739] close(3)                    = 0
[pid 11739] memfd_create("syzkaller", 0) = 3
[pid 11739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11739] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11739] munmap(0x7fd990e3c000, 32768) = 0
[pid 11739] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11739] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11739] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11739] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11739] close(4)                    = 0
[pid 11739] close(3)                    = 0
[pid 11739] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11739] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11739] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11739] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11739] open("./bus", O_RDONLY)     = 3
[pid 11739] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11739] exit_group(0)               = ?
[pid 11739] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11739, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11740
./strace-static-x86_64: Process 11740 attached
[pid 11740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11740] setpgid(0, 0)               = 0
[pid 11740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11740] write(3, "1000", 4)         = 4
[pid 11740] close(3)                    = 0
[pid 11740] memfd_create("syzkaller", 0) = 3
[pid 11740] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11740] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11740] munmap(0x7fd990e3c000, 32768) = 0
[pid 11740] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11740] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11740] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11740] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11740] close(4)                    = 0
[pid 11740] close(3)                    = 0
[pid 11740] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11740] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11740] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11740] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11740] open("./bus", O_RDONLY)     = 3
[pid 11740] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11740] exit_group(0)               = ?
[pid 11740] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11740, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11741
./strace-static-x86_64: Process 11741 attached
[pid 11741] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11741] setpgid(0, 0)               = 0
[pid 11741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11741] write(3, "1000", 4)         = 4
[pid 11741] close(3)                    = 0
[pid 11741] memfd_create("syzkaller", 0) = 3
[pid 11741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11741] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11741] munmap(0x7fd990e3c000, 32768) = 0
[pid 11741] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11741] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11741] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11741] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11741] close(4)                    = 0
[pid 11741] close(3)                    = 0
[pid 11741] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11741] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11741] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11741] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11741] open("./bus", O_RDONLY)     = 3
[pid 11741] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11741] exit_group(0)               = ?
[pid 11741] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11741, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11742
./strace-static-x86_64: Process 11742 attached
[pid 11742] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11742] setpgid(0, 0)               = 0
[pid 11742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11742] write(3, "1000", 4)         = 4
[pid 11742] close(3)                    = 0
[pid 11742] memfd_create("syzkaller", 0) = 3
[pid 11742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11742] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11742] munmap(0x7fd990e3c000, 32768) = 0
[pid 11742] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11742] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11742] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11742] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11742] close(4)                    = 0
[pid 11742] close(3)                    = 0
[pid 11742] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11742] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11742] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11742] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11742] open("./bus", O_RDONLY)     = 3
[pid 11742] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11742] exit_group(0)               = ?
[pid 11742] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11742, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11743 attached
, child_tidptr=0x55555567f5d0) = 11743
[pid 11743] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11743] setpgid(0, 0)               = 0
[pid 11743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11743] write(3, "1000", 4)         = 4
[pid 11743] close(3)                    = 0
[pid 11743] memfd_create("syzkaller", 0) = 3
[pid 11743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11743] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11743] munmap(0x7fd990e3c000, 32768) = 0
[pid 11743] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11743] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11743] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11743] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11743] close(4)                    = 0
[pid 11743] close(3)                    = 0
[pid 11743] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11743] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11743] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11743] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11743] open("./bus", O_RDONLY)     = 3
[pid 11743] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11743] exit_group(0)               = ?
[pid 11743] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11743, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11744 attached
, child_tidptr=0x55555567f5d0) = 11744
[pid 11744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11744] setpgid(0, 0)               = 0
[pid 11744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11744] write(3, "1000", 4)         = 4
[pid 11744] close(3)                    = 0
[pid 11744] memfd_create("syzkaller", 0) = 3
[pid 11744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11744] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11744] munmap(0x7fd990e3c000, 32768) = 0
[pid 11744] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11744] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11744] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11744] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11744] close(4)                    = 0
[pid 11744] close(3)                    = 0
[pid 11744] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11744] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11744] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11744] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11744] open("./bus", O_RDONLY)     = 3
[pid 11744] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11744] exit_group(0)               = ?
[pid 11744] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11744, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11745
./strace-static-x86_64: Process 11745 attached
[pid 11745] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11745] setpgid(0, 0)               = 0
[pid 11745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11745] write(3, "1000", 4)         = 4
[pid 11745] close(3)                    = 0
[pid 11745] memfd_create("syzkaller", 0) = 3
[pid 11745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11745] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11745] munmap(0x7fd990e3c000, 32768) = 0
[pid 11745] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11745] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11745] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11745] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11745] close(4)                    = 0
[pid 11745] close(3)                    = 0
[pid 11745] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11745] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11745] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11745] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11745] open("./bus", O_RDONLY)     = 3
[pid 11745] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11745] exit_group(0)               = ?
[pid 11745] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11745, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11746
./strace-static-x86_64: Process 11746 attached
[pid 11746] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11746] setpgid(0, 0)               = 0
[pid 11746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11746] write(3, "1000", 4)         = 4
[pid 11746] close(3)                    = 0
[pid 11746] memfd_create("syzkaller", 0) = 3
[pid 11746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11746] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11746] munmap(0x7fd990e3c000, 32768) = 0
[pid 11746] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11746] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11746] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11746] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11746] close(4)                    = 0
[pid 11746] close(3)                    = 0
[pid 11746] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11746] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11746] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11746] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11746] open("./bus", O_RDONLY)     = 3
[pid 11746] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11746] exit_group(0)               = ?
[pid 11746] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11746, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11747
./strace-static-x86_64: Process 11747 attached
[pid 11747] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11747] setpgid(0, 0)               = 0
[pid 11747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11747] write(3, "1000", 4)         = 4
[pid 11747] close(3)                    = 0
[pid 11747] memfd_create("syzkaller", 0) = 3
[pid 11747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11747] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11747] munmap(0x7fd990e3c000, 32768) = 0
[pid 11747] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11747] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11747] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11747] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11747] close(4)                    = 0
[pid 11747] close(3)                    = 0
[pid 11747] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11747] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11747] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11747] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11747] open("./bus", O_RDONLY)     = 3
[pid 11747] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11747] exit_group(0)               = ?
[pid 11747] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11747, 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=0x55555567f5d0) = 11748
./strace-static-x86_64: Process 11748 attached
[pid 11748] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11748] setpgid(0, 0)               = 0
[pid 11748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11748] write(3, "1000", 4)         = 4
[pid 11748] close(3)                    = 0
[pid 11748] memfd_create("syzkaller", 0) = 3
[pid 11748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11748] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11748] munmap(0x7fd990e3c000, 32768) = 0
[pid 11748] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11748] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11748] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11748] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11748] close(4)                    = 0
[pid 11748] close(3)                    = 0
[pid 11748] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11748] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11748] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11748] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11748] open("./bus", O_RDONLY)     = 3
[pid 11748] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11748] exit_group(0)               = ?
[pid 11748] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11748, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11749
./strace-static-x86_64: Process 11749 attached
[pid 11749] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11749] setpgid(0, 0)               = 0
[pid 11749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11749] write(3, "1000", 4)         = 4
[pid 11749] close(3)                    = 0
[pid 11749] memfd_create("syzkaller", 0) = 3
[pid 11749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11749] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11749] munmap(0x7fd990e3c000, 32768) = 0
[pid 11749] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11749] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11749] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11749] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11749] close(4)                    = 0
[pid 11749] close(3)                    = 0
[pid 11749] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11749] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11749] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11749] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11749] open("./bus", O_RDONLY)     = 3
[pid 11749] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11749] exit_group(0)               = ?
[pid 11749] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11749, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11750 attached
, child_tidptr=0x55555567f5d0) = 11750
[pid 11750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11750] setpgid(0, 0)               = 0
[pid 11750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11750] write(3, "1000", 4)         = 4
[pid 11750] close(3)                    = 0
[pid 11750] memfd_create("syzkaller", 0) = 3
[pid 11750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11750] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11750] munmap(0x7fd990e3c000, 32768) = 0
[pid 11750] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11750] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11750] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11750] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11750] close(4)                    = 0
[pid 11750] close(3)                    = 0
[pid 11750] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11750] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11750] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11750] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11750] open("./bus", O_RDONLY)     = 3
[pid 11750] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11750] exit_group(0)               = ?
[pid 11750] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11750, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11751
./strace-static-x86_64: Process 11751 attached
[pid 11751] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11751] setpgid(0, 0)               = 0
[pid 11751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11751] write(3, "1000", 4)         = 4
[pid 11751] close(3)                    = 0
[pid 11751] memfd_create("syzkaller", 0) = 3
[pid 11751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11751] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11751] munmap(0x7fd990e3c000, 32768) = 0
[pid 11751] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11751] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11751] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11751] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11751] close(4)                    = 0
[pid 11751] close(3)                    = 0
[pid 11751] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11751] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11751] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11751] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11751] open("./bus", O_RDONLY)     = 3
[pid 11751] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11751] exit_group(0)               = ?
[pid 11751] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11751, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11752
./strace-static-x86_64: Process 11752 attached
[pid 11752] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11752] setpgid(0, 0)               = 0
[pid 11752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11752] write(3, "1000", 4)         = 4
[pid 11752] close(3)                    = 0
[pid 11752] memfd_create("syzkaller", 0) = 3
[pid 11752] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11752] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11752] munmap(0x7fd990e3c000, 32768) = 0
[pid 11752] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11752] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11752] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11752] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11752] close(4)                    = 0
[pid 11752] close(3)                    = 0
[pid 11752] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11752] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11752] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11752] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11752] open("./bus", O_RDONLY)     = 3
[pid 11752] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11752] exit_group(0)               = ?
[pid 11752] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11752, 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=0x55555567f5d0) = 11753
./strace-static-x86_64: Process 11753 attached
[pid 11753] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11753] setpgid(0, 0)               = 0
[pid 11753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11753] write(3, "1000", 4)         = 4
[pid 11753] close(3)                    = 0
[pid 11753] memfd_create("syzkaller", 0) = 3
[pid 11753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11753] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11753] munmap(0x7fd990e3c000, 32768) = 0
[pid 11753] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11753] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11753] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11753] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11753] close(4)                    = 0
[pid 11753] close(3)                    = 0
[pid 11753] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11753] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11753] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11753] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11753] open("./bus", O_RDONLY)     = 3
[pid 11753] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11753] exit_group(0)               = ?
[pid 11753] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11753, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11754 attached
, child_tidptr=0x55555567f5d0) = 11754
[pid 11754] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11754] setpgid(0, 0)               = 0
[pid 11754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11754] write(3, "1000", 4)         = 4
[pid 11754] close(3)                    = 0
[pid 11754] memfd_create("syzkaller", 0) = 3
[pid 11754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11754] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11754] munmap(0x7fd990e3c000, 32768) = 0
[pid 11754] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11754] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11754] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11754] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11754] close(4)                    = 0
[pid 11754] close(3)                    = 0
[pid 11754] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11754] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11754] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11754] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11754] open("./bus", O_RDONLY)     = 3
[pid 11754] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11754] exit_group(0)               = ?
[pid 11754] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11754, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11755
./strace-static-x86_64: Process 11755 attached
[pid 11755] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11755] setpgid(0, 0)               = 0
[pid 11755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11755] write(3, "1000", 4)         = 4
[pid 11755] close(3)                    = 0
[pid 11755] memfd_create("syzkaller", 0) = 3
[pid 11755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11755] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11755] munmap(0x7fd990e3c000, 32768) = 0
[pid 11755] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11755] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11755] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11755] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11755] close(4)                    = 0
[pid 11755] close(3)                    = 0
[pid 11755] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11755] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11755] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11755] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11755] open("./bus", O_RDONLY)     = 3
[pid 11755] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11755] exit_group(0)               = ?
[pid 11755] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11755, 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=0x55555567f5d0) = 11756
./strace-static-x86_64: Process 11756 attached
[pid 11756] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11756] setpgid(0, 0)               = 0
[pid 11756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11756] write(3, "1000", 4)         = 4
[pid 11756] close(3)                    = 0
[pid 11756] memfd_create("syzkaller", 0) = 3
[pid 11756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11756] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11756] munmap(0x7fd990e3c000, 32768) = 0
[pid 11756] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11756] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11756] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11756] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11756] close(4)                    = 0
[pid 11756] close(3)                    = 0
[pid 11756] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11756] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11756] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11756] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11756] open("./bus", O_RDONLY)     = 3
[pid 11756] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11756] exit_group(0)               = ?
[pid 11756] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11756, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11757
./strace-static-x86_64: Process 11757 attached
[pid 11757] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11757] setpgid(0, 0)               = 0
[pid 11757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11757] write(3, "1000", 4)         = 4
[pid 11757] close(3)                    = 0
[pid 11757] memfd_create("syzkaller", 0) = 3
[pid 11757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11757] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11757] munmap(0x7fd990e3c000, 32768) = 0
[pid 11757] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11757] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11757] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11757] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11757] close(4)                    = 0
[pid 11757] close(3)                    = 0
[pid 11757] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11757] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11757] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11757] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11757] open("./bus", O_RDONLY)     = 3
[pid 11757] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11757] exit_group(0)               = ?
[pid 11757] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11757, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11758 attached
 <unfinished ...>
[pid 11758] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11758] setpgid(0, 0)               = 0
[pid 11758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11758
[pid 11758] <... openat resumed>)       = 3
[pid 11758] write(3, "1000", 4)         = 4
[pid 11758] close(3)                    = 0
[pid 11758] memfd_create("syzkaller", 0) = 3
[pid 11758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11758] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11758] munmap(0x7fd990e3c000, 32768) = 0
[pid 11758] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11758] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11758] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11758] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11758] close(4)                    = 0
[pid 11758] close(3)                    = 0
[pid 11758] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11758] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11758] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11758] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11758] open("./bus", O_RDONLY)     = 3
[pid 11758] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11758] exit_group(0)               = ?
[pid 11758] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11758, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11759
./strace-static-x86_64: Process 11759 attached
[pid 11759] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11759] setpgid(0, 0)               = 0
[pid 11759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11759] write(3, "1000", 4)         = 4
[pid 11759] close(3)                    = 0
[pid 11759] memfd_create("syzkaller", 0) = 3
[pid 11759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11759] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11759] munmap(0x7fd990e3c000, 32768) = 0
[pid 11759] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11759] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11759] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11759] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11759] close(4)                    = 0
[pid 11759] close(3)                    = 0
[pid 11759] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11759] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11759] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11759] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11759] open("./bus", O_RDONLY)     = 3
[pid 11759] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11759] exit_group(0)               = ?
[pid 11759] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11759, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11760 attached
, child_tidptr=0x55555567f5d0) = 11760
[pid 11760] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11760] setpgid(0, 0)               = 0
[pid 11760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11760] write(3, "1000", 4)         = 4
[pid 11760] close(3)                    = 0
[pid 11760] memfd_create("syzkaller", 0) = 3
[pid 11760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11760] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11760] munmap(0x7fd990e3c000, 32768) = 0
[pid 11760] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11760] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11760] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11760] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11760] close(4)                    = 0
[pid 11760] close(3)                    = 0
[pid 11760] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11760] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11760] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11760] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11760] open("./bus", O_RDONLY)     = 3
[pid 11760] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11760] exit_group(0)               = ?
[pid 11760] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11760, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11761
./strace-static-x86_64: Process 11761 attached
[pid 11761] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11761] setpgid(0, 0)               = 0
[pid 11761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11761] write(3, "1000", 4)         = 4
[pid 11761] close(3)                    = 0
[pid 11761] memfd_create("syzkaller", 0) = 3
[pid 11761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11761] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11761] munmap(0x7fd990e3c000, 32768) = 0
[pid 11761] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11761] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11761] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11761] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11761] close(4)                    = 0
[pid 11761] close(3)                    = 0
[pid 11761] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11761] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11761] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11761] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11761] open("./bus", O_RDONLY)     = 3
[pid 11761] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11761] exit_group(0)               = ?
[pid 11761] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11761, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11762
./strace-static-x86_64: Process 11762 attached
[pid 11762] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11762] setpgid(0, 0)               = 0
[pid 11762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11762] write(3, "1000", 4)         = 4
[pid 11762] close(3)                    = 0
[pid 11762] memfd_create("syzkaller", 0) = 3
[pid 11762] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11762] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11762] munmap(0x7fd990e3c000, 32768) = 0
[pid 11762] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11762] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11762] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11762] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11762] close(4)                    = 0
[pid 11762] close(3)                    = 0
[pid 11762] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11762] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11762] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11762] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11762] open("./bus", O_RDONLY)     = 3
[pid 11762] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11762] exit_group(0)               = ?
[pid 11762] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11762, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11763
./strace-static-x86_64: Process 11763 attached
[pid 11763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11763] setpgid(0, 0)               = 0
[pid 11763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11763] write(3, "1000", 4)         = 4
[pid 11763] close(3)                    = 0
[pid 11763] memfd_create("syzkaller", 0) = 3
[pid 11763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11763] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11763] munmap(0x7fd990e3c000, 32768) = 0
[pid 11763] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11763] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11763] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11763] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11763] close(4)                    = 0
[pid 11763] close(3)                    = 0
[pid 11763] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11763] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11763] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11763] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11763] open("./bus", O_RDONLY)     = 3
[pid 11763] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11763] exit_group(0)               = ?
[pid 11763] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11763, 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=0x55555567f5d0) = 11764
./strace-static-x86_64: Process 11764 attached
[pid 11764] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11764] setpgid(0, 0)               = 0
[pid 11764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11764] write(3, "1000", 4)         = 4
[pid 11764] close(3)                    = 0
[pid 11764] memfd_create("syzkaller", 0) = 3
[pid 11764] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11764] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11764] munmap(0x7fd990e3c000, 32768) = 0
[pid 11764] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11764] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11764] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11764] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11764] close(4)                    = 0
[pid 11764] close(3)                    = 0
[pid 11764] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11764] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11764] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11764] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11764] open("./bus", O_RDONLY)     = 3
[pid 11764] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11764] exit_group(0)               = ?
[pid 11764] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11764, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11765
./strace-static-x86_64: Process 11765 attached
[pid 11765] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11765] setpgid(0, 0)               = 0
[pid 11765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11765] write(3, "1000", 4)         = 4
[pid 11765] close(3)                    = 0
[pid 11765] memfd_create("syzkaller", 0) = 3
[pid 11765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11765] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11765] munmap(0x7fd990e3c000, 32768) = 0
[pid 11765] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11765] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11765] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11765] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11765] close(4)                    = 0
[pid 11765] close(3)                    = 0
[pid 11765] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11765] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11765] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11765] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11765] open("./bus", O_RDONLY)     = 3
[pid 11765] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11765] exit_group(0)               = ?
[pid 11765] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11765, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11766
./strace-static-x86_64: Process 11766 attached
[pid 11766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11766] setpgid(0, 0)               = 0
[pid 11766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11766] write(3, "1000", 4)         = 4
[pid 11766] close(3)                    = 0
[pid 11766] memfd_create("syzkaller", 0) = 3
[pid 11766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11766] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11766] munmap(0x7fd990e3c000, 32768) = 0
[pid 11766] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11766] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11766] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11766] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11766] close(4)                    = 0
[pid 11766] close(3)                    = 0
[pid 11766] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11766] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11766] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11766] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11766] open("./bus", O_RDONLY)     = 3
[pid 11766] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11766] exit_group(0)               = ?
[pid 11766] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11766, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11767
./strace-static-x86_64: Process 11767 attached
[pid 11767] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11767] setpgid(0, 0)               = 0
[pid 11767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11767] write(3, "1000", 4)         = 4
[pid 11767] close(3)                    = 0
[pid 11767] memfd_create("syzkaller", 0) = 3
[pid 11767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11767] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11767] munmap(0x7fd990e3c000, 32768) = 0
[pid 11767] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11767] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11767] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11767] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11767] close(4)                    = 0
[pid 11767] close(3)                    = 0
[pid 11767] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11767] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11767] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11767] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11767] open("./bus", O_RDONLY)     = 3
[pid 11767] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11767] exit_group(0)               = ?
[pid 11767] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11767, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11768
./strace-static-x86_64: Process 11768 attached
[pid 11768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11768] setpgid(0, 0)               = 0
[pid 11768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11768] write(3, "1000", 4)         = 4
[pid 11768] close(3)                    = 0
[pid 11768] memfd_create("syzkaller", 0) = 3
[pid 11768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11768] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11768] munmap(0x7fd990e3c000, 32768) = 0
[pid 11768] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11768] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11768] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11768] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11768] close(4)                    = 0
[pid 11768] close(3)                    = 0
[pid 11768] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11768] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11768] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11768] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11768] open("./bus", O_RDONLY)     = 3
[pid 11768] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11768] exit_group(0)               = ?
[pid 11768] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11768, 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 11769 attached
, child_tidptr=0x55555567f5d0) = 11769
[pid 11769] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11769] setpgid(0, 0)               = 0
[pid 11769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11769] write(3, "1000", 4)         = 4
[pid 11769] close(3)                    = 0
[pid 11769] memfd_create("syzkaller", 0) = 3
[pid 11769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11769] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11769] munmap(0x7fd990e3c000, 32768) = 0
[pid 11769] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11769] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11769] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11769] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11769] close(4)                    = 0
[pid 11769] close(3)                    = 0
[pid 11769] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11769] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11769] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11769] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11769] open("./bus", O_RDONLY)     = 3
[pid 11769] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11769] exit_group(0)               = ?
[pid 11769] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11769, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11770
./strace-static-x86_64: Process 11770 attached
[pid 11770] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11770] setpgid(0, 0)               = 0
[pid 11770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11770] write(3, "1000", 4)         = 4
[pid 11770] close(3)                    = 0
[pid 11770] memfd_create("syzkaller", 0) = 3
[pid 11770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11770] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11770] munmap(0x7fd990e3c000, 32768) = 0
[pid 11770] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11770] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11770] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11770] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11770] close(4)                    = 0
[pid 11770] close(3)                    = 0
[pid 11770] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11770] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11770] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11770] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11770] open("./bus", O_RDONLY)     = 3
[pid 11770] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11770] exit_group(0)               = ?
[pid 11770] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11770, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11771 attached
, child_tidptr=0x55555567f5d0) = 11771
[pid 11771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11771] setpgid(0, 0)               = 0
[pid 11771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11771] write(3, "1000", 4)         = 4
[pid 11771] close(3)                    = 0
[pid 11771] memfd_create("syzkaller", 0) = 3
[pid 11771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11771] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11771] munmap(0x7fd990e3c000, 32768) = 0
[pid 11771] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11771] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11771] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11771] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11771] close(4)                    = 0
[pid 11771] close(3)                    = 0
[pid 11771] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11771] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11771] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11771] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11771] open("./bus", O_RDONLY)     = 3
[pid 11771] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11771] exit_group(0)               = ?
[pid 11771] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11771, 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=0x55555567f5d0) = 11772
./strace-static-x86_64: Process 11772 attached
[pid 11772] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11772] setpgid(0, 0)               = 0
[pid 11772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11772] write(3, "1000", 4)         = 4
[pid 11772] close(3)                    = 0
[pid 11772] memfd_create("syzkaller", 0) = 3
[pid 11772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11772] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11772] munmap(0x7fd990e3c000, 32768) = 0
[pid 11772] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11772] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11772] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11772] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11772] close(4)                    = 0
[pid 11772] close(3)                    = 0
[pid 11772] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11772] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11772] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11772] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11772] open("./bus", O_RDONLY)     = 3
[pid 11772] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11772] exit_group(0)               = ?
[pid 11772] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11772, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11773
./strace-static-x86_64: Process 11773 attached
[pid 11773] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11773] setpgid(0, 0)               = 0
[pid 11773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11773] write(3, "1000", 4)         = 4
[pid 11773] close(3)                    = 0
[pid 11773] memfd_create("syzkaller", 0) = 3
[pid 11773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11773] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11773] munmap(0x7fd990e3c000, 32768) = 0
[pid 11773] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11773] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11773] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11773] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11773] close(4)                    = 0
[pid 11773] close(3)                    = 0
[pid 11773] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11773] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11773] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11773] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11773] open("./bus", O_RDONLY)     = 3
[pid 11773] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11773] exit_group(0)               = ?
[pid 11773] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11773, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11774
./strace-static-x86_64: Process 11774 attached
[pid 11774] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11774] setpgid(0, 0)               = 0
[pid 11774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11774] write(3, "1000", 4)         = 4
[pid 11774] close(3)                    = 0
[pid 11774] memfd_create("syzkaller", 0) = 3
[pid 11774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11774] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11774] munmap(0x7fd990e3c000, 32768) = 0
[pid 11774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11774] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11774] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11774] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11774] close(4)                    = 0
[pid 11774] close(3)                    = 0
[pid 11774] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11774] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11774] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11774] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11774] open("./bus", O_RDONLY)     = 3
[pid 11774] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11774] exit_group(0)               = ?
[pid 11774] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11774, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11775
./strace-static-x86_64: Process 11775 attached
[pid 11775] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11775] setpgid(0, 0)               = 0
[pid 11775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11775] write(3, "1000", 4)         = 4
[pid 11775] close(3)                    = 0
[pid 11775] memfd_create("syzkaller", 0) = 3
[pid 11775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11775] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11775] munmap(0x7fd990e3c000, 32768) = 0
[pid 11775] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11775] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11775] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11775] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11775] close(4)                    = 0
[pid 11775] close(3)                    = 0
[pid 11775] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11775] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11775] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11775] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11775] open("./bus", O_RDONLY)     = 3
[pid 11775] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11775] exit_group(0)               = ?
[pid 11775] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11775, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11776
./strace-static-x86_64: Process 11776 attached
[pid 11776] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11776] setpgid(0, 0)               = 0
[pid 11776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11776] write(3, "1000", 4)         = 4
[pid 11776] close(3)                    = 0
[pid 11776] memfd_create("syzkaller", 0) = 3
[pid 11776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11776] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11776] munmap(0x7fd990e3c000, 32768) = 0
[pid 11776] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11776] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11776] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11776] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11776] close(4)                    = 0
[pid 11776] close(3)                    = 0
[pid 11776] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11776] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11776] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11776] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11776] open("./bus", O_RDONLY)     = 3
[pid 11776] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11776] exit_group(0)               = ?
[pid 11776] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11776, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11777
./strace-static-x86_64: Process 11777 attached
[pid 11777] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11777] setpgid(0, 0)               = 0
[pid 11777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11777] write(3, "1000", 4)         = 4
[pid 11777] close(3)                    = 0
[pid 11777] memfd_create("syzkaller", 0) = 3
[pid 11777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11777] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11777] munmap(0x7fd990e3c000, 32768) = 0
[pid 11777] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11777] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11777] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11777] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11777] close(4)                    = 0
[pid 11777] close(3)                    = 0
[pid 11777] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11777] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11777] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11777] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11777] open("./bus", O_RDONLY)     = 3
[pid 11777] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11777] exit_group(0)               = ?
[pid 11777] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11777, 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=0x55555567f5d0) = 11778
./strace-static-x86_64: Process 11778 attached
[pid 11778] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11778] setpgid(0, 0)               = 0
[pid 11778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11778] write(3, "1000", 4)         = 4
[pid 11778] close(3)                    = 0
[pid 11778] memfd_create("syzkaller", 0) = 3
[pid 11778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11778] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11778] munmap(0x7fd990e3c000, 32768) = 0
[pid 11778] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11778] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11778] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11778] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11778] close(4)                    = 0
[pid 11778] close(3)                    = 0
[pid 11778] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11778] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11778] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11778] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11778] open("./bus", O_RDONLY)     = 3
[pid 11778] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11778] exit_group(0)               = ?
[pid 11778] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11778, 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=0x55555567f5d0) = 11779
./strace-static-x86_64: Process 11779 attached
[pid 11779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11779] setpgid(0, 0)               = 0
[pid 11779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11779] write(3, "1000", 4)         = 4
[pid 11779] close(3)                    = 0
[pid 11779] memfd_create("syzkaller", 0) = 3
[pid 11779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11779] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11779] munmap(0x7fd990e3c000, 32768) = 0
[pid 11779] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11779] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11779] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11779] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11779] close(4)                    = 0
[pid 11779] close(3)                    = 0
[pid 11779] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11779] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11779] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11779] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11779] open("./bus", O_RDONLY)     = 3
[pid 11779] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11779] exit_group(0)               = ?
[pid 11779] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11779, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11780
./strace-static-x86_64: Process 11780 attached
[pid 11780] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11780] setpgid(0, 0)               = 0
[pid 11780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11780] write(3, "1000", 4)         = 4
[pid 11780] close(3)                    = 0
[pid 11780] memfd_create("syzkaller", 0) = 3
[pid 11780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11780] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11780] munmap(0x7fd990e3c000, 32768) = 0
[pid 11780] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11780] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11780] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11780] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11780] close(4)                    = 0
[pid 11780] close(3)                    = 0
[pid 11780] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11780] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11780] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11780] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11780] open("./bus", O_RDONLY)     = 3
[pid 11780] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11780] exit_group(0)               = ?
[pid 11780] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11780, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11781 attached
, child_tidptr=0x55555567f5d0) = 11781
[pid 11781] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11781] setpgid(0, 0)               = 0
[pid 11781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11781] write(3, "1000", 4)         = 4
[pid 11781] close(3)                    = 0
[pid 11781] memfd_create("syzkaller", 0) = 3
[pid 11781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11781] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11781] munmap(0x7fd990e3c000, 32768) = 0
[pid 11781] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11781] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11781] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11781] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11781] close(4)                    = 0
[pid 11781] close(3)                    = 0
[pid 11781] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11781] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11781] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11781] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11781] open("./bus", O_RDONLY)     = 3
[pid 11781] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11781] exit_group(0)               = ?
[pid 11781] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11781, 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 11782 attached
, child_tidptr=0x55555567f5d0) = 11782
[pid 11782] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11782] setpgid(0, 0)               = 0
[pid 11782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11782] write(3, "1000", 4)         = 4
[pid 11782] close(3)                    = 0
[pid 11782] memfd_create("syzkaller", 0) = 3
[pid 11782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11782] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11782] munmap(0x7fd990e3c000, 32768) = 0
[pid 11782] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11782] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11782] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11782] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11782] close(4)                    = 0
[pid 11782] close(3)                    = 0
[pid 11782] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11782] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11782] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11782] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11782] open("./bus", O_RDONLY)     = 3
[pid 11782] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11782] exit_group(0)               = ?
[pid 11782] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11782, 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=0x55555567f5d0) = 11783
./strace-static-x86_64: Process 11783 attached
[pid 11783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11783] setpgid(0, 0)               = 0
[pid 11783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11783] write(3, "1000", 4)         = 4
[pid 11783] close(3)                    = 0
[pid 11783] memfd_create("syzkaller", 0) = 3
[pid 11783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11783] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11783] munmap(0x7fd990e3c000, 32768) = 0
[pid 11783] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11783] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11783] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11783] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11783] close(4)                    = 0
[pid 11783] close(3)                    = 0
[pid 11783] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11783] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11783] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11783] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11783] open("./bus", O_RDONLY)     = 3
[pid 11783] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11783] exit_group(0)               = ?
[pid 11783] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11783, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11784 attached
, child_tidptr=0x55555567f5d0) = 11784
[pid 11784] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11784] setpgid(0, 0)               = 0
[pid 11784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11784] write(3, "1000", 4)         = 4
[pid 11784] close(3)                    = 0
[pid 11784] memfd_create("syzkaller", 0) = 3
[pid 11784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11784] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11784] munmap(0x7fd990e3c000, 32768) = 0
[pid 11784] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11784] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11784] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11784] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11784] close(4)                    = 0
[pid 11784] close(3)                    = 0
[pid 11784] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11784] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11784] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11784] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11784] open("./bus", O_RDONLY)     = 3
[pid 11784] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11784] exit_group(0)               = ?
[pid 11784] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11784, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11785 attached
, child_tidptr=0x55555567f5d0) = 11785
[pid 11785] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11785] setpgid(0, 0)               = 0
[pid 11785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11785] write(3, "1000", 4)         = 4
[pid 11785] close(3)                    = 0
[pid 11785] memfd_create("syzkaller", 0) = 3
[pid 11785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11785] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11785] munmap(0x7fd990e3c000, 32768) = 0
[pid 11785] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11785] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11785] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11785] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11785] close(4)                    = 0
[pid 11785] close(3)                    = 0
[pid 11785] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11785] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11785] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11785] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11785] open("./bus", O_RDONLY)     = 3
[pid 11785] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11785] exit_group(0)               = ?
[pid 11785] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11785, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11786 attached
, child_tidptr=0x55555567f5d0) = 11786
[pid 11786] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11786] setpgid(0, 0)               = 0
[pid 11786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11786] write(3, "1000", 4)         = 4
[pid 11786] close(3)                    = 0
[pid 11786] memfd_create("syzkaller", 0) = 3
[pid 11786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11786] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11786] munmap(0x7fd990e3c000, 32768) = 0
[pid 11786] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11786] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11786] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11786] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11786] close(4)                    = 0
[pid 11786] close(3)                    = 0
[pid 11786] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11786] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11786] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11786] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11786] open("./bus", O_RDONLY)     = 3
[pid 11786] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11786] exit_group(0)               = ?
[pid 11786] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11786, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11787
./strace-static-x86_64: Process 11787 attached
[pid 11787] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11787] setpgid(0, 0)               = 0
[pid 11787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11787] write(3, "1000", 4)         = 4
[pid 11787] close(3)                    = 0
[pid 11787] memfd_create("syzkaller", 0) = 3
[pid 11787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11787] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11787] munmap(0x7fd990e3c000, 32768) = 0
[pid 11787] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11787] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11787] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11787] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11787] close(4)                    = 0
[pid 11787] close(3)                    = 0
[pid 11787] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11787] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11787] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11787] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11787] open("./bus", O_RDONLY)     = 3
[pid 11787] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11787] exit_group(0)               = ?
[pid 11787] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11787, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11788
./strace-static-x86_64: Process 11788 attached
[pid 11788] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11788] setpgid(0, 0)               = 0
[pid 11788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11788] write(3, "1000", 4)         = 4
[pid 11788] close(3)                    = 0
[pid 11788] memfd_create("syzkaller", 0) = 3
[pid 11788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11788] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11788] munmap(0x7fd990e3c000, 32768) = 0
[pid 11788] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11788] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11788] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11788] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11788] close(4)                    = 0
[pid 11788] close(3)                    = 0
[pid 11788] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11788] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11788] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11788] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11788] open("./bus", O_RDONLY)     = 3
[pid 11788] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11788] exit_group(0)               = ?
[pid 11788] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11788, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11789 attached
, child_tidptr=0x55555567f5d0) = 11789
[pid 11789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11789] setpgid(0, 0)               = 0
[pid 11789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11789] write(3, "1000", 4)         = 4
[pid 11789] close(3)                    = 0
[pid 11789] memfd_create("syzkaller", 0) = 3
[pid 11789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11789] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11789] munmap(0x7fd990e3c000, 32768) = 0
[pid 11789] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11789] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11789] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11789] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11789] close(4)                    = 0
[pid 11789] close(3)                    = 0
[pid 11789] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11789] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11789] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11789] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11789] open("./bus", O_RDONLY)     = 3
[pid 11789] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11789] exit_group(0)               = ?
[pid 11789] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11789, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11790
./strace-static-x86_64: Process 11790 attached
[pid 11790] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11790] setpgid(0, 0)               = 0
[pid 11790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11790] write(3, "1000", 4)         = 4
[pid 11790] close(3)                    = 0
[pid 11790] memfd_create("syzkaller", 0) = 3
[pid 11790] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11790] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11790] munmap(0x7fd990e3c000, 32768) = 0
[pid 11790] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11790] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11790] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11790] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11790] close(4)                    = 0
[pid 11790] close(3)                    = 0
[pid 11790] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11790] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11790] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11790] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11790] open("./bus", O_RDONLY)     = 3
[pid 11790] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11790] exit_group(0)               = ?
[pid 11790] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11790, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11791
./strace-static-x86_64: Process 11791 attached
[pid 11791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11791] setpgid(0, 0)               = 0
[pid 11791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11791] write(3, "1000", 4)         = 4
[pid 11791] close(3)                    = 0
[pid 11791] memfd_create("syzkaller", 0) = 3
[pid 11791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11791] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11791] munmap(0x7fd990e3c000, 32768) = 0
[pid 11791] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11791] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11791] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11791] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11791] close(4)                    = 0
[pid 11791] close(3)                    = 0
[pid 11791] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11791] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11791] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11791] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11791] open("./bus", O_RDONLY)     = 3
[pid 11791] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11791] exit_group(0)               = ?
[pid 11791] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11791, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11792
./strace-static-x86_64: Process 11792 attached
[pid 11792] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11792] setpgid(0, 0)               = 0
[pid 11792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11792] write(3, "1000", 4)         = 4
[pid 11792] close(3)                    = 0
[pid 11792] memfd_create("syzkaller", 0) = 3
[pid 11792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11792] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11792] munmap(0x7fd990e3c000, 32768) = 0
[pid 11792] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11792] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11792] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11792] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11792] close(4)                    = 0
[pid 11792] close(3)                    = 0
[pid 11792] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11792] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11792] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11792] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11792] open("./bus", O_RDONLY)     = 3
[pid 11792] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11792] exit_group(0)               = ?
[pid 11792] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11792, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11793
./strace-static-x86_64: Process 11793 attached
[pid 11793] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11793] setpgid(0, 0)               = 0
[pid 11793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11793] write(3, "1000", 4)         = 4
[pid 11793] close(3)                    = 0
[pid 11793] memfd_create("syzkaller", 0) = 3
[pid 11793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11793] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11793] munmap(0x7fd990e3c000, 32768) = 0
[pid 11793] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11793] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11793] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11793] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11793] close(4)                    = 0
[pid 11793] close(3)                    = 0
[pid 11793] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11793] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11793] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11793] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11793] open("./bus", O_RDONLY)     = 3
[pid 11793] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11793] exit_group(0)               = ?
[pid 11793] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11793, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11794 attached
, child_tidptr=0x55555567f5d0) = 11794
[pid 11794] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11794] setpgid(0, 0)               = 0
[pid 11794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11794] write(3, "1000", 4)         = 4
[pid 11794] close(3)                    = 0
[pid 11794] memfd_create("syzkaller", 0) = 3
[pid 11794] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11794] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11794] munmap(0x7fd990e3c000, 32768) = 0
[pid 11794] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11794] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11794] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11794] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11794] close(4)                    = 0
[pid 11794] close(3)                    = 0
[pid 11794] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11794] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11794] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11794] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11794] open("./bus", O_RDONLY)     = 3
[pid 11794] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11794] exit_group(0)               = ?
[pid 11794] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11794, 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=0x55555567f5d0) = 11795
./strace-static-x86_64: Process 11795 attached
[pid 11795] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11795] setpgid(0, 0)               = 0
[pid 11795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11795] write(3, "1000", 4)         = 4
[pid 11795] close(3)                    = 0
[pid 11795] memfd_create("syzkaller", 0) = 3
[pid 11795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11795] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11795] munmap(0x7fd990e3c000, 32768) = 0
[pid 11795] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11795] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11795] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11795] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11795] close(4)                    = 0
[pid 11795] close(3)                    = 0
[pid 11795] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11795] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11795] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11795] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11795] open("./bus", O_RDONLY)     = 3
[pid 11795] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11795] exit_group(0)               = ?
[pid 11795] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11795, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11796
./strace-static-x86_64: Process 11796 attached
[pid 11796] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11796] setpgid(0, 0)               = 0
[pid 11796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11796] write(3, "1000", 4)         = 4
[pid 11796] close(3)                    = 0
[pid 11796] memfd_create("syzkaller", 0) = 3
[pid 11796] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11796] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11796] munmap(0x7fd990e3c000, 32768) = 0
[pid 11796] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11796] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11796] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11796] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11796] close(4)                    = 0
[pid 11796] close(3)                    = 0
[pid 11796] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11796] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11796] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11796] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11796] open("./bus", O_RDONLY)     = 3
[pid 11796] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11796] exit_group(0)               = ?
[pid 11796] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11796, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11797
./strace-static-x86_64: Process 11797 attached
[pid 11797] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11797] setpgid(0, 0)               = 0
[pid 11797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11797] write(3, "1000", 4)         = 4
[pid 11797] close(3)                    = 0
[pid 11797] memfd_create("syzkaller", 0) = 3
[pid 11797] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11797] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11797] munmap(0x7fd990e3c000, 32768) = 0
[pid 11797] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11797] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11797] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11797] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11797] close(4)                    = 0
[pid 11797] close(3)                    = 0
[pid 11797] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11797] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11797] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11797] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11797] open("./bus", O_RDONLY)     = 3
[pid 11797] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11797] exit_group(0)               = ?
[pid 11797] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11797, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11798
./strace-static-x86_64: Process 11798 attached
[pid 11798] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11798] setpgid(0, 0)               = 0
[pid 11798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11798] write(3, "1000", 4)         = 4
[pid 11798] close(3)                    = 0
[pid 11798] memfd_create("syzkaller", 0) = 3
[pid 11798] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11798] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11798] munmap(0x7fd990e3c000, 32768) = 0
[pid 11798] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11798] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11798] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11798] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11798] close(4)                    = 0
[pid 11798] close(3)                    = 0
[pid 11798] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11798] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11798] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11798] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11798] open("./bus", O_RDONLY)     = 3
[pid 11798] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11798] exit_group(0)               = ?
[pid 11798] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11798, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11799
./strace-static-x86_64: Process 11799 attached
[pid 11799] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11799] setpgid(0, 0)               = 0
[pid 11799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11799] write(3, "1000", 4)         = 4
[pid 11799] close(3)                    = 0
[pid 11799] memfd_create("syzkaller", 0) = 3
[pid 11799] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11799] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11799] munmap(0x7fd990e3c000, 32768) = 0
[pid 11799] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11799] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11799] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11799] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11799] close(4)                    = 0
[pid 11799] close(3)                    = 0
[pid 11799] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11799] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11799] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11799] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11799] open("./bus", O_RDONLY)     = 3
[pid 11799] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11799] exit_group(0)               = ?
[pid 11799] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11799, 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 11800 attached
, child_tidptr=0x55555567f5d0) = 11800
[pid 11800] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11800] setpgid(0, 0)               = 0
[pid 11800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11800] write(3, "1000", 4)         = 4
[pid 11800] close(3)                    = 0
[pid 11800] memfd_create("syzkaller", 0) = 3
[pid 11800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11800] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11800] munmap(0x7fd990e3c000, 32768) = 0
[pid 11800] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11800] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11800] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11800] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11800] close(4)                    = 0
[pid 11800] close(3)                    = 0
[pid 11800] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11800] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11800] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11800] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11800] open("./bus", O_RDONLY)     = 3
[pid 11800] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11800] exit_group(0)               = ?
[pid 11800] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11800, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11801 attached
, child_tidptr=0x55555567f5d0) = 11801
[pid 11801] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11801] setpgid(0, 0)               = 0
[pid 11801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11801] write(3, "1000", 4)         = 4
[pid 11801] close(3)                    = 0
[pid 11801] memfd_create("syzkaller", 0) = 3
[pid 11801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11801] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11801] munmap(0x7fd990e3c000, 32768) = 0
[pid 11801] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11801] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11801] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11801] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11801] close(4)                    = 0
[pid 11801] close(3)                    = 0
[pid 11801] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11801] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11801] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11801] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11801] open("./bus", O_RDONLY)     = 3
[pid 11801] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11801] exit_group(0)               = ?
[pid 11801] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11801, 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 11802 attached
, child_tidptr=0x55555567f5d0) = 11802
[pid 11802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11802] setpgid(0, 0)               = 0
[pid 11802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11802] write(3, "1000", 4)         = 4
[pid 11802] close(3)                    = 0
[pid 11802] memfd_create("syzkaller", 0) = 3
[pid 11802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11802] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11802] munmap(0x7fd990e3c000, 32768) = 0
[pid 11802] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11802] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11802] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11802] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11802] close(4)                    = 0
[pid 11802] close(3)                    = 0
[pid 11802] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11802] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11802] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11802] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11802] open("./bus", O_RDONLY)     = 3
[pid 11802] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11802] exit_group(0)               = ?
[pid 11802] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11802, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11803
./strace-static-x86_64: Process 11803 attached
[pid 11803] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11803] setpgid(0, 0)               = 0
[pid 11803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11803] write(3, "1000", 4)         = 4
[pid 11803] close(3)                    = 0
[pid 11803] memfd_create("syzkaller", 0) = 3
[pid 11803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11803] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11803] munmap(0x7fd990e3c000, 32768) = 0
[pid 11803] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11803] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11803] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11803] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11803] close(4)                    = 0
[pid 11803] close(3)                    = 0
[pid 11803] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11803] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11803] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11803] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11803] open("./bus", O_RDONLY)     = 3
[pid 11803] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11803] exit_group(0)               = ?
[pid 11803] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11803, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11804 attached
, child_tidptr=0x55555567f5d0) = 11804
[pid 11804] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11804] setpgid(0, 0)               = 0
[pid 11804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11804] write(3, "1000", 4)         = 4
[pid 11804] close(3)                    = 0
[pid 11804] memfd_create("syzkaller", 0) = 3
[pid 11804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11804] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11804] munmap(0x7fd990e3c000, 32768) = 0
[pid 11804] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11804] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11804] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11804] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11804] close(4)                    = 0
[pid 11804] close(3)                    = 0
[pid 11804] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11804] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11804] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11804] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11804] open("./bus", O_RDONLY)     = 3
[pid 11804] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11804] exit_group(0)               = ?
[pid 11804] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11804, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11805
./strace-static-x86_64: Process 11805 attached
[pid 11805] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11805] setpgid(0, 0)               = 0
[pid 11805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11805] write(3, "1000", 4)         = 4
[pid 11805] close(3)                    = 0
[pid 11805] memfd_create("syzkaller", 0) = 3
[pid 11805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11805] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11805] munmap(0x7fd990e3c000, 32768) = 0
[pid 11805] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11805] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11805] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11805] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11805] close(4)                    = 0
[pid 11805] close(3)                    = 0
[pid 11805] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11805] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11805] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11805] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11805] open("./bus", O_RDONLY)     = 3
[pid 11805] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11805] exit_group(0)               = ?
[pid 11805] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11805, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11806
./strace-static-x86_64: Process 11806 attached
[pid 11806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11806] setpgid(0, 0)               = 0
[pid 11806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11806] write(3, "1000", 4)         = 4
[pid 11806] close(3)                    = 0
[pid 11806] memfd_create("syzkaller", 0) = 3
[pid 11806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11806] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11806] munmap(0x7fd990e3c000, 32768) = 0
[pid 11806] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11806] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11806] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11806] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11806] close(4)                    = 0
[pid 11806] close(3)                    = 0
[pid 11806] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11806] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11806] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11806] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11806] open("./bus", O_RDONLY)     = 3
[pid 11806] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11806] exit_group(0)               = ?
[pid 11806] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11806, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11807
./strace-static-x86_64: Process 11807 attached
[pid 11807] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11807] setpgid(0, 0)               = 0
[pid 11807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11807] write(3, "1000", 4)         = 4
[pid 11807] close(3)                    = 0
[pid 11807] memfd_create("syzkaller", 0) = 3
[pid 11807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11807] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11807] munmap(0x7fd990e3c000, 32768) = 0
[pid 11807] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11807] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11807] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11807] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11807] close(4)                    = 0
[pid 11807] close(3)                    = 0
[pid 11807] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11807] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11807] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11807] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11807] open("./bus", O_RDONLY)     = 3
[pid 11807] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11807] exit_group(0)               = ?
[pid 11807] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11807, 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 11808 attached
, child_tidptr=0x55555567f5d0) = 11808
[pid 11808] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11808] setpgid(0, 0)               = 0
[pid 11808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11808] write(3, "1000", 4)         = 4
[pid 11808] close(3)                    = 0
[pid 11808] memfd_create("syzkaller", 0) = 3
[pid 11808] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11808] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11808] munmap(0x7fd990e3c000, 32768) = 0
[pid 11808] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11808] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11808] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11808] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11808] close(4)                    = 0
[pid 11808] close(3)                    = 0
[pid 11808] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11808] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11808] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11808] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11808] open("./bus", O_RDONLY)     = 3
[pid 11808] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11808] exit_group(0)               = ?
[pid 11808] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11808, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11809
./strace-static-x86_64: Process 11809 attached
[pid 11809] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11809] setpgid(0, 0)               = 0
[pid 11809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11809] write(3, "1000", 4)         = 4
[pid 11809] close(3)                    = 0
[pid 11809] memfd_create("syzkaller", 0) = 3
[pid 11809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11809] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11809] munmap(0x7fd990e3c000, 32768) = 0
[pid 11809] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11809] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11809] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11809] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11809] close(4)                    = 0
[pid 11809] close(3)                    = 0
[pid 11809] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11809] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11809] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11809] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11809] open("./bus", O_RDONLY)     = 3
[pid 11809] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11809] exit_group(0)               = ?
[pid 11809] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11809, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11810 attached
, child_tidptr=0x55555567f5d0) = 11810
[pid 11810] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11810] setpgid(0, 0)               = 0
[pid 11810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11810] write(3, "1000", 4)         = 4
[pid 11810] close(3)                    = 0
[pid 11810] memfd_create("syzkaller", 0) = 3
[pid 11810] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11810] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11810] munmap(0x7fd990e3c000, 32768) = 0
[pid 11810] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11810] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11810] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11810] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11810] close(4)                    = 0
[pid 11810] close(3)                    = 0
[pid 11810] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11810] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11810] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11810] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11810] open("./bus", O_RDONLY)     = 3
[pid 11810] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11810] exit_group(0)               = ?
[pid 11810] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11810, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11811
./strace-static-x86_64: Process 11811 attached
[pid 11811] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11811] setpgid(0, 0)               = 0
[pid 11811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11811] write(3, "1000", 4)         = 4
[pid 11811] close(3)                    = 0
[pid 11811] memfd_create("syzkaller", 0) = 3
[pid 11811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11811] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11811] munmap(0x7fd990e3c000, 32768) = 0
[pid 11811] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11811] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11811] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11811] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11811] close(4)                    = 0
[pid 11811] close(3)                    = 0
[pid 11811] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11811] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11811] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11811] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11811] open("./bus", O_RDONLY)     = 3
[pid 11811] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11811] exit_group(0)               = ?
[pid 11811] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11811, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11812
./strace-static-x86_64: Process 11812 attached
[pid 11812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11812] setpgid(0, 0)               = 0
[pid 11812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11812] write(3, "1000", 4)         = 4
[pid 11812] close(3)                    = 0
[pid 11812] memfd_create("syzkaller", 0) = 3
[pid 11812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11812] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11812] munmap(0x7fd990e3c000, 32768) = 0
[pid 11812] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11812] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11812] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11812] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11812] close(4)                    = 0
[pid 11812] close(3)                    = 0
[pid 11812] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11812] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11812] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11812] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11812] open("./bus", O_RDONLY)     = 3
[pid 11812] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11812] exit_group(0)               = ?
[pid 11812] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11812, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11813
./strace-static-x86_64: Process 11813 attached
[pid 11813] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11813] setpgid(0, 0)               = 0
[pid 11813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11813] write(3, "1000", 4)         = 4
[pid 11813] close(3)                    = 0
[pid 11813] memfd_create("syzkaller", 0) = 3
[pid 11813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11813] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11813] munmap(0x7fd990e3c000, 32768) = 0
[pid 11813] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11813] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11813] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11813] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11813] close(4)                    = 0
[pid 11813] close(3)                    = 0
[pid 11813] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11813] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11813] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11813] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11813] open("./bus", O_RDONLY)     = 3
[pid 11813] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11813] exit_group(0)               = ?
[pid 11813] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11813, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11814
./strace-static-x86_64: Process 11814 attached
[pid 11814] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11814] setpgid(0, 0)               = 0
[pid 11814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11814] write(3, "1000", 4)         = 4
[pid 11814] close(3)                    = 0
[pid 11814] memfd_create("syzkaller", 0) = 3
[pid 11814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11814] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11814] munmap(0x7fd990e3c000, 32768) = 0
[pid 11814] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11814] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11814] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11814] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11814] close(4)                    = 0
[pid 11814] close(3)                    = 0
[pid 11814] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11814] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11814] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11814] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11814] open("./bus", O_RDONLY)     = 3
[pid 11814] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11814] exit_group(0)               = ?
[pid 11814] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11814, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11815
./strace-static-x86_64: Process 11815 attached
[pid 11815] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11815] setpgid(0, 0)               = 0
[pid 11815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11815] write(3, "1000", 4)         = 4
[pid 11815] close(3)                    = 0
[pid 11815] memfd_create("syzkaller", 0) = 3
[pid 11815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11815] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11815] munmap(0x7fd990e3c000, 32768) = 0
[pid 11815] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11815] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11815] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11815] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11815] close(4)                    = 0
[pid 11815] close(3)                    = 0
[pid 11815] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11815] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11815] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11815] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11815] open("./bus", O_RDONLY)     = 3
[pid 11815] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11815] exit_group(0)               = ?
[pid 11815] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11815, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11816
./strace-static-x86_64: Process 11816 attached
[pid 11816] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11816] setpgid(0, 0)               = 0
[pid 11816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11816] write(3, "1000", 4)         = 4
[pid 11816] close(3)                    = 0
[pid 11816] memfd_create("syzkaller", 0) = 3
[pid 11816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11816] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11816] munmap(0x7fd990e3c000, 32768) = 0
[pid 11816] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11816] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11816] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11816] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11816] close(4)                    = 0
[pid 11816] close(3)                    = 0
[pid 11816] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11816] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11816] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11816] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11816] open("./bus", O_RDONLY)     = 3
[pid 11816] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11816] exit_group(0)               = ?
[pid 11816] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11816, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11817
./strace-static-x86_64: Process 11817 attached
[pid 11817] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11817] setpgid(0, 0)               = 0
[pid 11817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11817] write(3, "1000", 4)         = 4
[pid 11817] close(3)                    = 0
[pid 11817] memfd_create("syzkaller", 0) = 3
[pid 11817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11817] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11817] munmap(0x7fd990e3c000, 32768) = 0
[pid 11817] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11817] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11817] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11817] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11817] close(4)                    = 0
[pid 11817] close(3)                    = 0
[pid 11817] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11817] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11817] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11817] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11817] open("./bus", O_RDONLY)     = 3
[pid 11817] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11817] exit_group(0)               = ?
[pid 11817] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11817, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11818
./strace-static-x86_64: Process 11818 attached
[pid 11818] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11818] setpgid(0, 0)               = 0
[pid 11818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11818] write(3, "1000", 4)         = 4
[pid 11818] close(3)                    = 0
[pid 11818] memfd_create("syzkaller", 0) = 3
[pid 11818] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11818] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11818] munmap(0x7fd990e3c000, 32768) = 0
[pid 11818] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11818] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11818] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11818] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11818] close(4)                    = 0
[pid 11818] close(3)                    = 0
[pid 11818] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11818] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11818] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11818] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11818] open("./bus", O_RDONLY)     = 3
[pid 11818] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11818] exit_group(0)               = ?
[pid 11818] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11818, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11819
./strace-static-x86_64: Process 11819 attached
[pid 11819] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11819] setpgid(0, 0)               = 0
[pid 11819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11819] write(3, "1000", 4)         = 4
[pid 11819] close(3)                    = 0
[pid 11819] memfd_create("syzkaller", 0) = 3
[pid 11819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11819] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11819] munmap(0x7fd990e3c000, 32768) = 0
[pid 11819] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11819] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11819] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11819] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11819] close(4)                    = 0
[pid 11819] close(3)                    = 0
[pid 11819] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11819] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11819] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11819] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11819] open("./bus", O_RDONLY)     = 3
[pid 11819] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11819] exit_group(0)               = ?
[pid 11819] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11819, 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 11820 attached
, child_tidptr=0x55555567f5d0) = 11820
[pid 11820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11820] setpgid(0, 0)               = 0
[pid 11820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11820] write(3, "1000", 4)         = 4
[pid 11820] close(3)                    = 0
[pid 11820] memfd_create("syzkaller", 0) = 3
[pid 11820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11820] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11820] munmap(0x7fd990e3c000, 32768) = 0
[pid 11820] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11820] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11820] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11820] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11820] close(4)                    = 0
[pid 11820] close(3)                    = 0
[pid 11820] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11820] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11820] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11820] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11820] open("./bus", O_RDONLY)     = 3
[pid 11820] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11820] exit_group(0)               = ?
[pid 11820] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11820, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11821
./strace-static-x86_64: Process 11821 attached
[pid 11821] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11821] setpgid(0, 0)               = 0
[pid 11821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11821] write(3, "1000", 4)         = 4
[pid 11821] close(3)                    = 0
[pid 11821] memfd_create("syzkaller", 0) = 3
[pid 11821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11821] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11821] munmap(0x7fd990e3c000, 32768) = 0
[pid 11821] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11821] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11821] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11821] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11821] close(4)                    = 0
[pid 11821] close(3)                    = 0
[pid 11821] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11821] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11821] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11821] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11821] open("./bus", O_RDONLY)     = 3
[pid 11821] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11821] exit_group(0)               = ?
[pid 11821] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11821, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11822
./strace-static-x86_64: Process 11822 attached
[pid 11822] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11822] setpgid(0, 0)               = 0
[pid 11822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11822] write(3, "1000", 4)         = 4
[pid 11822] close(3)                    = 0
[pid 11822] memfd_create("syzkaller", 0) = 3
[pid 11822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11822] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11822] munmap(0x7fd990e3c000, 32768) = 0
[pid 11822] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11822] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11822] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11822] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11822] close(4)                    = 0
[pid 11822] close(3)                    = 0
[pid 11822] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11822] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11822] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11822] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11822] open("./bus", O_RDONLY)     = 3
[pid 11822] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11822] exit_group(0)               = ?
[pid 11822] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11822, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11823 attached
 <unfinished ...>
[pid 11823] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11823
[pid 11823] <... prctl resumed>)        = 0
[pid 11823] setpgid(0, 0)               = 0
[pid 11823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11823] write(3, "1000", 4)         = 4
[pid 11823] close(3)                    = 0
[pid 11823] memfd_create("syzkaller", 0) = 3
[pid 11823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11823] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11823] munmap(0x7fd990e3c000, 32768) = 0
[pid 11823] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11823] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11823] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11823] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11823] close(4)                    = 0
[pid 11823] close(3)                    = 0
[pid 11823] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11823] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11823] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11823] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11823] open("./bus", O_RDONLY)     = 3
[pid 11823] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11823] exit_group(0)               = ?
[pid 11823] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11823, 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=0x55555567f5d0) = 11824
./strace-static-x86_64: Process 11824 attached
[pid 11824] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11824] setpgid(0, 0)               = 0
[pid 11824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11824] write(3, "1000", 4)         = 4
[pid 11824] close(3)                    = 0
[pid 11824] memfd_create("syzkaller", 0) = 3
[pid 11824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11824] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11824] munmap(0x7fd990e3c000, 32768) = 0
[pid 11824] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11824] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11824] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11824] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11824] close(4)                    = 0
[pid 11824] close(3)                    = 0
[pid 11824] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11824] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11824] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11824] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11824] open("./bus", O_RDONLY)     = 3
[pid 11824] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11824] exit_group(0)               = ?
[pid 11824] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11824, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11825
./strace-static-x86_64: Process 11825 attached
[pid 11825] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11825] setpgid(0, 0)               = 0
[pid 11825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11825] write(3, "1000", 4)         = 4
[pid 11825] close(3)                    = 0
[pid 11825] memfd_create("syzkaller", 0) = 3
[pid 11825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11825] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11825] munmap(0x7fd990e3c000, 32768) = 0
[pid 11825] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11825] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11825] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11825] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11825] close(4)                    = 0
[pid 11825] close(3)                    = 0
[pid 11825] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11825] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11825] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11825] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11825] open("./bus", O_RDONLY)     = 3
[pid 11825] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11825] exit_group(0)               = ?
[pid 11825] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11825, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11826 attached
, child_tidptr=0x55555567f5d0) = 11826
[pid 11826] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11826] setpgid(0, 0)               = 0
[pid 11826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11826] write(3, "1000", 4)         = 4
[pid 11826] close(3)                    = 0
[pid 11826] memfd_create("syzkaller", 0) = 3
[pid 11826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11826] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11826] munmap(0x7fd990e3c000, 32768) = 0
[pid 11826] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11826] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11826] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11826] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11826] close(4)                    = 0
[pid 11826] close(3)                    = 0
[pid 11826] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11826] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11826] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11826] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11826] open("./bus", O_RDONLY)     = 3
[pid 11826] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11826] exit_group(0)               = ?
[pid 11826] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11826, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11827
./strace-static-x86_64: Process 11827 attached
[pid 11827] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11827] setpgid(0, 0)               = 0
[pid 11827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11827] write(3, "1000", 4)         = 4
[pid 11827] close(3)                    = 0
[pid 11827] memfd_create("syzkaller", 0) = 3
[pid 11827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11827] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11827] munmap(0x7fd990e3c000, 32768) = 0
[pid 11827] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11827] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11827] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11827] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11827] close(4)                    = 0
[pid 11827] close(3)                    = 0
[pid 11827] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11827] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11827] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11827] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11827] open("./bus", O_RDONLY)     = 3
[pid 11827] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11827] exit_group(0)               = ?
[pid 11827] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11827, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11828
./strace-static-x86_64: Process 11828 attached
[pid 11828] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11828] setpgid(0, 0)               = 0
[pid 11828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11828] write(3, "1000", 4)         = 4
[pid 11828] close(3)                    = 0
[pid 11828] memfd_create("syzkaller", 0) = 3
[pid 11828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11828] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11828] munmap(0x7fd990e3c000, 32768) = 0
[pid 11828] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11828] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11828] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11828] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11828] close(4)                    = 0
[pid 11828] close(3)                    = 0
[pid 11828] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11828] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11828] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11828] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11828] open("./bus", O_RDONLY)     = 3
[pid 11828] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11828] exit_group(0)               = ?
[pid 11828] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11828, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11829 attached
, child_tidptr=0x55555567f5d0) = 11829
[pid 11829] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11829] setpgid(0, 0)               = 0
[pid 11829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11829] write(3, "1000", 4)         = 4
[pid 11829] close(3)                    = 0
[pid 11829] memfd_create("syzkaller", 0) = 3
[pid 11829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11829] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11829] munmap(0x7fd990e3c000, 32768) = 0
[pid 11829] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11829] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11829] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11829] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11829] close(4)                    = 0
[pid 11829] close(3)                    = 0
[pid 11829] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11829] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11829] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11829] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11829] open("./bus", O_RDONLY)     = 3
[pid 11829] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11829] exit_group(0)               = ?
[pid 11829] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11829, 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 11830 attached
, child_tidptr=0x55555567f5d0) = 11830
[pid 11830] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11830] setpgid(0, 0)               = 0
[pid 11830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11830] write(3, "1000", 4)         = 4
[pid 11830] close(3)                    = 0
[pid 11830] memfd_create("syzkaller", 0) = 3
[pid 11830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11830] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11830] munmap(0x7fd990e3c000, 32768) = 0
[pid 11830] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11830] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11830] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11830] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11830] close(4)                    = 0
[pid 11830] close(3)                    = 0
[pid 11830] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11830] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11830] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11830] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11830] open("./bus", O_RDONLY)     = 3
[pid 11830] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11830] exit_group(0)               = ?
[pid 11830] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11830, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11831
./strace-static-x86_64: Process 11831 attached
[pid 11831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11831] setpgid(0, 0)               = 0
[pid 11831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11831] write(3, "1000", 4)         = 4
[pid 11831] close(3)                    = 0
[pid 11831] memfd_create("syzkaller", 0) = 3
[pid 11831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11831] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11831] munmap(0x7fd990e3c000, 32768) = 0
[pid 11831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11831] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11831] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11831] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11831] close(4)                    = 0
[pid 11831] close(3)                    = 0
[pid 11831] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11831] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11831] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11831] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11831] open("./bus", O_RDONLY)     = 3
[pid 11831] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11831] exit_group(0)               = ?
[pid 11831] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11831, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11832
./strace-static-x86_64: Process 11832 attached
[pid 11832] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11832] setpgid(0, 0)               = 0
[pid 11832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11832] write(3, "1000", 4)         = 4
[pid 11832] close(3)                    = 0
[pid 11832] memfd_create("syzkaller", 0) = 3
[pid 11832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11832] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11832] munmap(0x7fd990e3c000, 32768) = 0
[pid 11832] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11832] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11832] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11832] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11832] close(4)                    = 0
[pid 11832] close(3)                    = 0
[pid 11832] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11832] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11832] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11832] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11832] open("./bus", O_RDONLY)     = 3
[pid 11832] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11832] exit_group(0)               = ?
[pid 11832] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11832, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11833 attached
, child_tidptr=0x55555567f5d0) = 11833
[pid 11833] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11833] setpgid(0, 0)               = 0
[pid 11833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11833] write(3, "1000", 4)         = 4
[pid 11833] close(3)                    = 0
[pid 11833] memfd_create("syzkaller", 0) = 3
[pid 11833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11833] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11833] munmap(0x7fd990e3c000, 32768) = 0
[pid 11833] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11833] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11833] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11833] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11833] close(4)                    = 0
[pid 11833] close(3)                    = 0
[pid 11833] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11833] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11833] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11833] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11833] open("./bus", O_RDONLY)     = 3
[pid 11833] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11833] exit_group(0)               = ?
[pid 11833] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11833, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11834
./strace-static-x86_64: Process 11834 attached
[pid 11834] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11834] setpgid(0, 0)               = 0
[pid 11834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11834] write(3, "1000", 4)         = 4
[pid 11834] close(3)                    = 0
[pid 11834] memfd_create("syzkaller", 0) = 3
[pid 11834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11834] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11834] munmap(0x7fd990e3c000, 32768) = 0
[pid 11834] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11834] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11834] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11834] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11834] close(4)                    = 0
[pid 11834] close(3)                    = 0
[pid 11834] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11834] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11834] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11834] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11834] open("./bus", O_RDONLY)     = 3
[pid 11834] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11834] exit_group(0)               = ?
[pid 11834] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11834, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11835
./strace-static-x86_64: Process 11835 attached
[pid 11835] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11835] setpgid(0, 0)               = 0
[pid 11835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11835] write(3, "1000", 4)         = 4
[pid 11835] close(3)                    = 0
[pid 11835] memfd_create("syzkaller", 0) = 3
[pid 11835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11835] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11835] munmap(0x7fd990e3c000, 32768) = 0
[pid 11835] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11835] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11835] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11835] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11835] close(4)                    = 0
[pid 11835] close(3)                    = 0
[pid 11835] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11835] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11835] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11835] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11835] open("./bus", O_RDONLY)     = 3
[pid 11835] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11835] exit_group(0)               = ?
[pid 11835] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11835, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11836
./strace-static-x86_64: Process 11836 attached
[pid 11836] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11836] setpgid(0, 0)               = 0
[pid 11836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11836] write(3, "1000", 4)         = 4
[pid 11836] close(3)                    = 0
[pid 11836] memfd_create("syzkaller", 0) = 3
[pid 11836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11836] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11836] munmap(0x7fd990e3c000, 32768) = 0
[pid 11836] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11836] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11836] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11836] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11836] close(4)                    = 0
[pid 11836] close(3)                    = 0
[pid 11836] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11836] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11836] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11836] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11836] open("./bus", O_RDONLY)     = 3
[pid 11836] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11836] exit_group(0)               = ?
[pid 11836] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11836, 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 11837 attached
, child_tidptr=0x55555567f5d0) = 11837
[pid 11837] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11837] setpgid(0, 0)               = 0
[pid 11837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11837] write(3, "1000", 4)         = 4
[pid 11837] close(3)                    = 0
[pid 11837] memfd_create("syzkaller", 0) = 3
[pid 11837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11837] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11837] munmap(0x7fd990e3c000, 32768) = 0
[pid 11837] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11837] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11837] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11837] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11837] close(4)                    = 0
[pid 11837] close(3)                    = 0
[pid 11837] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11837] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11837] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11837] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11837] open("./bus", O_RDONLY)     = 3
[pid 11837] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11837] exit_group(0)               = ?
[pid 11837] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11837, 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=0x55555567f5d0) = 11838
./strace-static-x86_64: Process 11838 attached
[pid 11838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11838] setpgid(0, 0)               = 0
[pid 11838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11838] write(3, "1000", 4)         = 4
[pid 11838] close(3)                    = 0
[pid 11838] memfd_create("syzkaller", 0) = 3
[pid 11838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11838] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11838] munmap(0x7fd990e3c000, 32768) = 0
[pid 11838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11838] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11838] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11838] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11838] close(4)                    = 0
[pid 11838] close(3)                    = 0
[pid 11838] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11838] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11838] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11838] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11838] open("./bus", O_RDONLY)     = 3
[pid 11838] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11838] exit_group(0)               = ?
[pid 11838] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11838, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11839
./strace-static-x86_64: Process 11839 attached
[pid 11839] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11839] setpgid(0, 0)               = 0
[pid 11839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11839] write(3, "1000", 4)         = 4
[pid 11839] close(3)                    = 0
[pid 11839] memfd_create("syzkaller", 0) = 3
[pid 11839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11839] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11839] munmap(0x7fd990e3c000, 32768) = 0
[pid 11839] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11839] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11839] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11839] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11839] close(4)                    = 0
[pid 11839] close(3)                    = 0
[pid 11839] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11839] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11839] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11839] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11839] open("./bus", O_RDONLY)     = 3
[pid 11839] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11839] exit_group(0)               = ?
[pid 11839] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11839, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11840
./strace-static-x86_64: Process 11840 attached
[pid 11840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11840] setpgid(0, 0)               = 0
[pid 11840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11840] write(3, "1000", 4)         = 4
[pid 11840] close(3)                    = 0
[pid 11840] memfd_create("syzkaller", 0) = 3
[pid 11840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11840] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11840] munmap(0x7fd990e3c000, 32768) = 0
[pid 11840] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11840] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11840] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11840] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11840] close(4)                    = 0
[pid 11840] close(3)                    = 0
[pid 11840] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11840] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11840] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11840] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11840] open("./bus", O_RDONLY)     = 3
[pid 11840] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11840] exit_group(0)               = ?
[pid 11840] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11840, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11841
./strace-static-x86_64: Process 11841 attached
[pid 11841] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11841] setpgid(0, 0)               = 0
[pid 11841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11841] write(3, "1000", 4)         = 4
[pid 11841] close(3)                    = 0
[pid 11841] memfd_create("syzkaller", 0) = 3
[pid 11841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11841] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11841] munmap(0x7fd990e3c000, 32768) = 0
[pid 11841] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11841] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11841] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11841] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11841] close(4)                    = 0
[pid 11841] close(3)                    = 0
[pid 11841] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11841] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11841] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11841] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11841] open("./bus", O_RDONLY)     = 3
[pid 11841] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11841] exit_group(0)               = ?
[pid 11841] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11841, 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 11842 attached
 <unfinished ...>
[pid 11842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11842] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11842
[pid 11842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11842] write(3, "1000", 4)         = 4
[pid 11842] close(3)                    = 0
[pid 11842] memfd_create("syzkaller", 0) = 3
[pid 11842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11842] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11842] munmap(0x7fd990e3c000, 32768) = 0
[pid 11842] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11842] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11842] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11842] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11842] close(4)                    = 0
[pid 11842] close(3)                    = 0
[pid 11842] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11842] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11842] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11842] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11842] open("./bus", O_RDONLY)     = 3
[pid 11842] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11842] exit_group(0)               = ?
[pid 11842] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11842, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11843
./strace-static-x86_64: Process 11843 attached
[pid 11843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11843] setpgid(0, 0)               = 0
[pid 11843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11843] write(3, "1000", 4)         = 4
[pid 11843] close(3)                    = 0
[pid 11843] memfd_create("syzkaller", 0) = 3
[pid 11843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11843] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11843] munmap(0x7fd990e3c000, 32768) = 0
[pid 11843] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11843] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11843] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11843] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11843] close(4)                    = 0
[pid 11843] close(3)                    = 0
[pid 11843] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11843] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11843] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11843] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11843] open("./bus", O_RDONLY)     = 3
[pid 11843] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11843] exit_group(0)               = ?
[pid 11843] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11843, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11844
./strace-static-x86_64: Process 11844 attached
[pid 11844] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11844] setpgid(0, 0)               = 0
[pid 11844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11844] write(3, "1000", 4)         = 4
[pid 11844] close(3)                    = 0
[pid 11844] memfd_create("syzkaller", 0) = 3
[pid 11844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11844] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11844] munmap(0x7fd990e3c000, 32768) = 0
[pid 11844] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11844] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11844] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11844] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11844] close(4)                    = 0
[pid 11844] close(3)                    = 0
[pid 11844] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11844] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11844] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11844] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11844] open("./bus", O_RDONLY)     = 3
[pid 11844] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11844] exit_group(0)               = ?
[pid 11844] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11844, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11845 attached
, child_tidptr=0x55555567f5d0) = 11845
[pid 11845] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11845] setpgid(0, 0)               = 0
[pid 11845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11845] write(3, "1000", 4)         = 4
[pid 11845] close(3)                    = 0
[pid 11845] memfd_create("syzkaller", 0) = 3
[pid 11845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11845] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11845] munmap(0x7fd990e3c000, 32768) = 0
[pid 11845] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11845] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11845] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11845] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11845] close(4)                    = 0
[pid 11845] close(3)                    = 0
[pid 11845] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11845] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11845] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11845] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11845] open("./bus", O_RDONLY)     = 3
[pid 11845] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11845] exit_group(0)               = ?
[pid 11845] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11845, 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=0x55555567f5d0) = 11846
./strace-static-x86_64: Process 11846 attached
[pid 11846] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11846] setpgid(0, 0)               = 0
[pid 11846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11846] write(3, "1000", 4)         = 4
[pid 11846] close(3)                    = 0
[pid 11846] memfd_create("syzkaller", 0) = 3
[pid 11846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11846] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11846] munmap(0x7fd990e3c000, 32768) = 0
[pid 11846] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11846] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11846] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11846] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11846] close(4)                    = 0
[pid 11846] close(3)                    = 0
[pid 11846] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11846] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11846] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11846] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11846] open("./bus", O_RDONLY)     = 3
[pid 11846] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11846] exit_group(0)               = ?
[pid 11846] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11846, 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=0x55555567f5d0) = 11847
./strace-static-x86_64: Process 11847 attached
[pid 11847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11847] setpgid(0, 0)               = 0
[pid 11847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11847] write(3, "1000", 4)         = 4
[pid 11847] close(3)                    = 0
[pid 11847] memfd_create("syzkaller", 0) = 3
[pid 11847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11847] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11847] munmap(0x7fd990e3c000, 32768) = 0
[pid 11847] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11847] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11847] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11847] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11847] close(4)                    = 0
[pid 11847] close(3)                    = 0
[pid 11847] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11847] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11847] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11847] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11847] open("./bus", O_RDONLY)     = 3
[pid 11847] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11847] exit_group(0)               = ?
[pid 11847] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11847, 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=0x55555567f5d0) = 11848
./strace-static-x86_64: Process 11848 attached
[pid 11848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11848] setpgid(0, 0)               = 0
[pid 11848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11848] write(3, "1000", 4)         = 4
[pid 11848] close(3)                    = 0
[pid 11848] memfd_create("syzkaller", 0) = 3
[pid 11848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11848] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11848] munmap(0x7fd990e3c000, 32768) = 0
[pid 11848] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11848] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11848] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11848] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11848] close(4)                    = 0
[pid 11848] close(3)                    = 0
[pid 11848] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11848] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11848] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11848] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11848] open("./bus", O_RDONLY)     = 3
[pid 11848] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11848] exit_group(0)               = ?
[pid 11848] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11848, 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=0x55555567f5d0) = 11849
./strace-static-x86_64: Process 11849 attached
[pid 11849] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11849] setpgid(0, 0)               = 0
[pid 11849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11849] write(3, "1000", 4)         = 4
[pid 11849] close(3)                    = 0
[pid 11849] memfd_create("syzkaller", 0) = 3
[pid 11849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11849] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11849] munmap(0x7fd990e3c000, 32768) = 0
[pid 11849] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11849] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11849] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11849] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11849] close(4)                    = 0
[pid 11849] close(3)                    = 0
[pid 11849] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11849] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11849] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11849] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11849] open("./bus", O_RDONLY)     = 3
[pid 11849] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11849] exit_group(0)               = ?
[pid 11849] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11849, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11850
./strace-static-x86_64: Process 11850 attached
[pid 11850] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11850] setpgid(0, 0)               = 0
[pid 11850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11850] write(3, "1000", 4)         = 4
[pid 11850] close(3)                    = 0
[pid 11850] memfd_create("syzkaller", 0) = 3
[pid 11850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11850] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11850] munmap(0x7fd990e3c000, 32768) = 0
[pid 11850] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11850] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11850] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11850] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11850] close(4)                    = 0
[pid 11850] close(3)                    = 0
[pid 11850] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11850] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11850] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11850] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11850] open("./bus", O_RDONLY)     = 3
[pid 11850] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11850] exit_group(0)               = ?
[pid 11850] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11850, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11851
./strace-static-x86_64: Process 11851 attached
[pid 11851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11851] setpgid(0, 0)               = 0
[pid 11851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11851] write(3, "1000", 4)         = 4
[pid 11851] close(3)                    = 0
[pid 11851] memfd_create("syzkaller", 0) = 3
[pid 11851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11851] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11851] munmap(0x7fd990e3c000, 32768) = 0
[pid 11851] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11851] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11851] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11851] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11851] close(4)                    = 0
[pid 11851] close(3)                    = 0
[pid 11851] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11851] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11851] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11851] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11851] open("./bus", O_RDONLY)     = 3
[pid 11851] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11851] exit_group(0)               = ?
[pid 11851] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11851, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11852
./strace-static-x86_64: Process 11852 attached
[pid 11852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11852] setpgid(0, 0)               = 0
[pid 11852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11852] write(3, "1000", 4)         = 4
[pid 11852] close(3)                    = 0
[pid 11852] memfd_create("syzkaller", 0) = 3
[pid 11852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11852] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11852] munmap(0x7fd990e3c000, 32768) = 0
[pid 11852] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11852] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11852] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11852] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11852] close(4)                    = 0
[pid 11852] close(3)                    = 0
[pid 11852] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11852] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11852] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11852] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11852] open("./bus", O_RDONLY)     = 3
[pid 11852] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11852] exit_group(0)               = ?
[pid 11852] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11852, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11853
./strace-static-x86_64: Process 11853 attached
[pid 11853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11853] setpgid(0, 0)               = 0
[pid 11853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11853] write(3, "1000", 4)         = 4
[pid 11853] close(3)                    = 0
[pid 11853] memfd_create("syzkaller", 0) = 3
[pid 11853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11853] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11853] munmap(0x7fd990e3c000, 32768) = 0
[pid 11853] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11853] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11853] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11853] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11853] close(4)                    = 0
[pid 11853] close(3)                    = 0
[pid 11853] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11853] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11853] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11853] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11853] open("./bus", O_RDONLY)     = 3
[pid 11853] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11853] exit_group(0)               = ?
[pid 11853] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11853, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11854
./strace-static-x86_64: Process 11854 attached
[pid 11854] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11854] setpgid(0, 0)               = 0
[pid 11854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11854] write(3, "1000", 4)         = 4
[pid 11854] close(3)                    = 0
[pid 11854] memfd_create("syzkaller", 0) = 3
[pid 11854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11854] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11854] munmap(0x7fd990e3c000, 32768) = 0
[pid 11854] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11854] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11854] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11854] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11854] close(4)                    = 0
[pid 11854] close(3)                    = 0
[pid 11854] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11854] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11854] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11854] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11854] open("./bus", O_RDONLY)     = 3
[pid 11854] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11854] exit_group(0)               = ?
[pid 11854] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11854, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11855
./strace-static-x86_64: Process 11855 attached
[pid 11855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11855] setpgid(0, 0)               = 0
[pid 11855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11855] write(3, "1000", 4)         = 4
[pid 11855] close(3)                    = 0
[pid 11855] memfd_create("syzkaller", 0) = 3
[pid 11855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11855] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11855] munmap(0x7fd990e3c000, 32768) = 0
[pid 11855] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11855] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11855] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11855] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11855] close(4)                    = 0
[pid 11855] close(3)                    = 0
[pid 11855] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11855] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11855] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11855] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11855] open("./bus", O_RDONLY)     = 3
[pid 11855] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11855] exit_group(0)               = ?
[pid 11855] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11855, 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 11856 attached
 <unfinished ...>
[pid 11856] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11856] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11856
[pid 11856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11856] write(3, "1000", 4)         = 4
[pid 11856] close(3)                    = 0
[pid 11856] memfd_create("syzkaller", 0) = 3
[pid 11856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11856] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11856] munmap(0x7fd990e3c000, 32768) = 0
[pid 11856] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11856] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11856] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11856] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11856] close(4)                    = 0
[pid 11856] close(3)                    = 0
[pid 11856] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11856] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11856] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11856] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11856] open("./bus", O_RDONLY)     = 3
[pid 11856] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11856] exit_group(0)               = ?
[pid 11856] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11856, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11857
./strace-static-x86_64: Process 11857 attached
[pid 11857] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11857] setpgid(0, 0)               = 0
[pid 11857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11857] write(3, "1000", 4)         = 4
[pid 11857] close(3)                    = 0
[pid 11857] memfd_create("syzkaller", 0) = 3
[pid 11857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11857] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11857] munmap(0x7fd990e3c000, 32768) = 0
[pid 11857] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11857] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11857] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11857] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11857] close(4)                    = 0
[pid 11857] close(3)                    = 0
[pid 11857] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11857] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11857] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11857] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11857] open("./bus", O_RDONLY)     = 3
[pid 11857] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11857] exit_group(0)               = ?
[pid 11857] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11857, 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=0x55555567f5d0) = 11858
./strace-static-x86_64: Process 11858 attached
[pid 11858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11858] setpgid(0, 0)               = 0
[pid 11858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11858] write(3, "1000", 4)         = 4
[pid 11858] close(3)                    = 0
[pid 11858] memfd_create("syzkaller", 0) = 3
[pid 11858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11858] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11858] munmap(0x7fd990e3c000, 32768) = 0
[pid 11858] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11858] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11858] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11858] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11858] close(4)                    = 0
[pid 11858] close(3)                    = 0
[pid 11858] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11858] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11858] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11858] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11858] open("./bus", O_RDONLY)     = 3
[pid 11858] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11858] exit_group(0)               = ?
[pid 11858] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11858, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11859
./strace-static-x86_64: Process 11859 attached
[pid 11859] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11859] setpgid(0, 0)               = 0
[pid 11859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11859] write(3, "1000", 4)         = 4
[pid 11859] close(3)                    = 0
[pid 11859] memfd_create("syzkaller", 0) = 3
[pid 11859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11859] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11859] munmap(0x7fd990e3c000, 32768) = 0
[pid 11859] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11859] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11859] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11859] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11859] close(4)                    = 0
[pid 11859] close(3)                    = 0
[pid 11859] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11859] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11859] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11859] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11859] open("./bus", O_RDONLY)     = 3
[pid 11859] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11859] exit_group(0)               = ?
[pid 11859] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11859, 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=0x55555567f5d0) = 11860
./strace-static-x86_64: Process 11860 attached
[pid 11860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11860] setpgid(0, 0)               = 0
[pid 11860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11860] write(3, "1000", 4)         = 4
[pid 11860] close(3)                    = 0
[pid 11860] memfd_create("syzkaller", 0) = 3
[pid 11860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11860] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11860] munmap(0x7fd990e3c000, 32768) = 0
[pid 11860] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11860] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11860] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11860] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11860] close(4)                    = 0
[pid 11860] close(3)                    = 0
[pid 11860] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11860] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11860] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11860] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11860] open("./bus", O_RDONLY)     = 3
[pid 11860] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11860] exit_group(0)               = ?
[pid 11860] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11860, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11861 attached
, child_tidptr=0x55555567f5d0) = 11861
[pid 11861] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11861] setpgid(0, 0)               = 0
[pid 11861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11861] write(3, "1000", 4)         = 4
[pid 11861] close(3)                    = 0
[pid 11861] memfd_create("syzkaller", 0) = 3
[pid 11861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11861] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11861] munmap(0x7fd990e3c000, 32768) = 0
[pid 11861] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11861] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11861] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11861] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11861] close(4)                    = 0
[pid 11861] close(3)                    = 0
[pid 11861] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11861] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11861] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11861] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11861] open("./bus", O_RDONLY)     = 3
[pid 11861] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11861] exit_group(0)               = ?
[pid 11861] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11861, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11862
./strace-static-x86_64: Process 11862 attached
[pid 11862] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11862] setpgid(0, 0)               = 0
[pid 11862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11862] write(3, "1000", 4)         = 4
[pid 11862] close(3)                    = 0
[pid 11862] memfd_create("syzkaller", 0) = 3
[pid 11862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11862] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11862] munmap(0x7fd990e3c000, 32768) = 0
[pid 11862] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11862] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11862] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11862] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11862] close(4)                    = 0
[pid 11862] close(3)                    = 0
[pid 11862] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11862] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11862] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11862] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11862] open("./bus", O_RDONLY)     = 3
[pid 11862] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11862] exit_group(0)               = ?
[pid 11862] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11862, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11863 attached
, child_tidptr=0x55555567f5d0) = 11863
[pid 11863] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11863] setpgid(0, 0)               = 0
[pid 11863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11863] write(3, "1000", 4)         = 4
[pid 11863] close(3)                    = 0
[pid 11863] memfd_create("syzkaller", 0) = 3
[pid 11863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11863] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11863] munmap(0x7fd990e3c000, 32768) = 0
[pid 11863] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11863] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11863] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11863] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11863] close(4)                    = 0
[pid 11863] close(3)                    = 0
[pid 11863] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11863] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11863] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11863] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11863] open("./bus", O_RDONLY)     = 3
[pid 11863] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11863] exit_group(0)               = ?
[pid 11863] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11863, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11864 attached
, child_tidptr=0x55555567f5d0) = 11864
[pid 11864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11864] setpgid(0, 0)               = 0
[pid 11864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11864] write(3, "1000", 4)         = 4
[pid 11864] close(3)                    = 0
[pid 11864] memfd_create("syzkaller", 0) = 3
[pid 11864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11864] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11864] munmap(0x7fd990e3c000, 32768) = 0
[pid 11864] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11864] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11864] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11864] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11864] close(4)                    = 0
[pid 11864] close(3)                    = 0
[pid 11864] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11864] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11864] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11864] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11864] open("./bus", O_RDONLY)     = 3
[pid 11864] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11864] exit_group(0)               = ?
[pid 11864] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11864, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11865 attached
, child_tidptr=0x55555567f5d0) = 11865
[pid 11865] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11865] setpgid(0, 0)               = 0
[pid 11865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11865] write(3, "1000", 4)         = 4
[pid 11865] close(3)                    = 0
[pid 11865] memfd_create("syzkaller", 0) = 3
[pid 11865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11865] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11865] munmap(0x7fd990e3c000, 32768) = 0
[pid 11865] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11865] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11865] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11865] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11865] close(4)                    = 0
[pid 11865] close(3)                    = 0
[pid 11865] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11865] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11865] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11865] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11865] open("./bus", O_RDONLY)     = 3
[pid 11865] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11865] exit_group(0)               = ?
[pid 11865] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11865, 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 11866 attached
, child_tidptr=0x55555567f5d0) = 11866
[pid 11866] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11866] setpgid(0, 0)               = 0
[pid 11866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11866] write(3, "1000", 4)         = 4
[pid 11866] close(3)                    = 0
[pid 11866] memfd_create("syzkaller", 0) = 3
[pid 11866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11866] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11866] munmap(0x7fd990e3c000, 32768) = 0
[pid 11866] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11866] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11866] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11866] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11866] close(4)                    = 0
[pid 11866] close(3)                    = 0
[pid 11866] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11866] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11866] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11866] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11866] open("./bus", O_RDONLY)     = 3
[pid 11866] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11866] exit_group(0)               = ?
[pid 11866] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11866, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11867
./strace-static-x86_64: Process 11867 attached
[pid 11867] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11867] setpgid(0, 0)               = 0
[pid 11867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11867] write(3, "1000", 4)         = 4
[pid 11867] close(3)                    = 0
[pid 11867] memfd_create("syzkaller", 0) = 3
[pid 11867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11867] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11867] munmap(0x7fd990e3c000, 32768) = 0
[pid 11867] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11867] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11867] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11867] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11867] close(4)                    = 0
[pid 11867] close(3)                    = 0
[pid 11867] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11867] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11867] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11867] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11867] open("./bus", O_RDONLY)     = 3
[pid 11867] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11867] exit_group(0)               = ?
[pid 11867] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11867, 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=0x55555567f5d0) = 11868
./strace-static-x86_64: Process 11868 attached
[pid 11868] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11868] setpgid(0, 0)               = 0
[pid 11868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11868] write(3, "1000", 4)         = 4
[pid 11868] close(3)                    = 0
[pid 11868] memfd_create("syzkaller", 0) = 3
[pid 11868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11868] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11868] munmap(0x7fd990e3c000, 32768) = 0
[pid 11868] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11868] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11868] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11868] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11868] close(4)                    = 0
[pid 11868] close(3)                    = 0
[pid 11868] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11868] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11868] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11868] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11868] open("./bus", O_RDONLY)     = 3
[pid 11868] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11868] exit_group(0)               = ?
[pid 11868] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11868, 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=0x55555567f5d0) = 11869
./strace-static-x86_64: Process 11869 attached
[pid 11869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11869] setpgid(0, 0)               = 0
[pid 11869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11869] write(3, "1000", 4)         = 4
[pid 11869] close(3)                    = 0
[pid 11869] memfd_create("syzkaller", 0) = 3
[pid 11869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11869] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11869] munmap(0x7fd990e3c000, 32768) = 0
[pid 11869] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11869] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11869] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11869] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11869] close(4)                    = 0
[pid 11869] close(3)                    = 0
[pid 11869] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11869] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11869] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11869] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11869] open("./bus", O_RDONLY)     = 3
[pid 11869] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11869] exit_group(0)               = ?
[pid 11869] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11869, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11870
./strace-static-x86_64: Process 11870 attached
[pid 11870] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11870] setpgid(0, 0)               = 0
[pid 11870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11870] write(3, "1000", 4)         = 4
[pid 11870] close(3)                    = 0
[pid 11870] memfd_create("syzkaller", 0) = 3
[pid 11870] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11870] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11870] munmap(0x7fd990e3c000, 32768) = 0
[pid 11870] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11870] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11870] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11870] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11870] close(4)                    = 0
[pid 11870] close(3)                    = 0
[pid 11870] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11870] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11870] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11870] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11870] open("./bus", O_RDONLY)     = 3
[pid 11870] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11870] exit_group(0)               = ?
[pid 11870] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11870, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11871
./strace-static-x86_64: Process 11871 attached
[pid 11871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11871] setpgid(0, 0)               = 0
[pid 11871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11871] write(3, "1000", 4)         = 4
[pid 11871] close(3)                    = 0
[pid 11871] memfd_create("syzkaller", 0) = 3
[pid 11871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11871] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11871] munmap(0x7fd990e3c000, 32768) = 0
[pid 11871] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11871] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11871] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11871] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11871] close(4)                    = 0
[pid 11871] close(3)                    = 0
[pid 11871] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11871] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11871] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11871] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11871] open("./bus", O_RDONLY)     = 3
[pid 11871] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11871] exit_group(0)               = ?
[pid 11871] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11871, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11872
./strace-static-x86_64: Process 11872 attached
[pid 11872] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11872] setpgid(0, 0)               = 0
[pid 11872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11872] write(3, "1000", 4)         = 4
[pid 11872] close(3)                    = 0
[pid 11872] memfd_create("syzkaller", 0) = 3
[pid 11872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11872] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11872] munmap(0x7fd990e3c000, 32768) = 0
[pid 11872] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11872] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11872] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11872] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11872] close(4)                    = 0
[pid 11872] close(3)                    = 0
[pid 11872] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11872] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11872] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11872] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11872] open("./bus", O_RDONLY)     = 3
[pid 11872] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11872] exit_group(0)               = ?
[pid 11872] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11872, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11873 attached
, child_tidptr=0x55555567f5d0) = 11873
[pid 11873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11873] setpgid(0, 0)               = 0
[pid 11873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11873] write(3, "1000", 4)         = 4
[pid 11873] close(3)                    = 0
[pid 11873] memfd_create("syzkaller", 0) = 3
[pid 11873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11873] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11873] munmap(0x7fd990e3c000, 32768) = 0
[pid 11873] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11873] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11873] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11873] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11873] close(4)                    = 0
[pid 11873] close(3)                    = 0
[pid 11873] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11873] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11873] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11873] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11873] open("./bus", O_RDONLY)     = 3
[pid 11873] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11873] exit_group(0)               = ?
[pid 11873] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11873, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11874
./strace-static-x86_64: Process 11874 attached
[pid 11874] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11874] setpgid(0, 0)               = 0
[pid 11874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11874] write(3, "1000", 4)         = 4
[pid 11874] close(3)                    = 0
[pid 11874] memfd_create("syzkaller", 0) = 3
[pid 11874] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11874] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11874] munmap(0x7fd990e3c000, 32768) = 0
[pid 11874] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11874] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11874] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11874] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11874] close(4)                    = 0
[pid 11874] close(3)                    = 0
[pid 11874] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11874] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11874] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11874] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11874] open("./bus", O_RDONLY)     = 3
[pid 11874] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11874] exit_group(0)               = ?
[pid 11874] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11874, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11875
./strace-static-x86_64: Process 11875 attached
[pid 11875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11875] setpgid(0, 0)               = 0
[pid 11875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11875] write(3, "1000", 4)         = 4
[pid 11875] close(3)                    = 0
[pid 11875] memfd_create("syzkaller", 0) = 3
[pid 11875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11875] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11875] munmap(0x7fd990e3c000, 32768) = 0
[pid 11875] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11875] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11875] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11875] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11875] close(4)                    = 0
[pid 11875] close(3)                    = 0
[pid 11875] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11875] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11875] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11875] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11875] open("./bus", O_RDONLY)     = 3
[pid 11875] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11875] exit_group(0)               = ?
[pid 11875] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11875, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11876
./strace-static-x86_64: Process 11876 attached
[pid 11876] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11876] setpgid(0, 0)               = 0
[pid 11876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11876] write(3, "1000", 4)         = 4
[pid 11876] close(3)                    = 0
[pid 11876] memfd_create("syzkaller", 0) = 3
[pid 11876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11876] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11876] munmap(0x7fd990e3c000, 32768) = 0
[pid 11876] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11876] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11876] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11876] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11876] close(4)                    = 0
[pid 11876] close(3)                    = 0
[pid 11876] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11876] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11876] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11876] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11876] open("./bus", O_RDONLY)     = 3
[pid 11876] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11876] exit_group(0)               = ?
[pid 11876] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11876, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11877 attached
, child_tidptr=0x55555567f5d0) = 11877
[pid 11877] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11877] setpgid(0, 0)               = 0
[pid 11877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11877] write(3, "1000", 4)         = 4
[pid 11877] close(3)                    = 0
[pid 11877] memfd_create("syzkaller", 0) = 3
[pid 11877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11877] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11877] munmap(0x7fd990e3c000, 32768) = 0
[pid 11877] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11877] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11877] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11877] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11877] close(4)                    = 0
[pid 11877] close(3)                    = 0
[pid 11877] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11877] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11877] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11877] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11877] open("./bus", O_RDONLY)     = 3
[pid 11877] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11877] exit_group(0)               = ?
[pid 11877] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11877, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11878
./strace-static-x86_64: Process 11878 attached
[pid 11878] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11878] setpgid(0, 0)               = 0
[pid 11878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11878] write(3, "1000", 4)         = 4
[pid 11878] close(3)                    = 0
[pid 11878] memfd_create("syzkaller", 0) = 3
[pid 11878] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11878] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11878] munmap(0x7fd990e3c000, 32768) = 0
[pid 11878] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11878] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11878] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11878] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11878] close(4)                    = 0
[pid 11878] close(3)                    = 0
[pid 11878] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11878] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11878] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11878] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11878] open("./bus", O_RDONLY)     = 3
[pid 11878] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11878] exit_group(0)               = ?
[pid 11878] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11878, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11879 attached
, child_tidptr=0x55555567f5d0) = 11879
[pid 11879] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11879] setpgid(0, 0)               = 0
[pid 11879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11879] write(3, "1000", 4)         = 4
[pid 11879] close(3)                    = 0
[pid 11879] memfd_create("syzkaller", 0) = 3
[pid 11879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11879] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11879] munmap(0x7fd990e3c000, 32768) = 0
[pid 11879] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11879] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11879] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11879] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11879] close(4)                    = 0
[pid 11879] close(3)                    = 0
[pid 11879] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11879] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11879] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11879] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11879] open("./bus", O_RDONLY)     = 3
[pid 11879] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11879] exit_group(0)               = ?
[pid 11879] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11879, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11880
./strace-static-x86_64: Process 11880 attached
[pid 11880] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11880] setpgid(0, 0)               = 0
[pid 11880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11880] write(3, "1000", 4)         = 4
[pid 11880] close(3)                    = 0
[pid 11880] memfd_create("syzkaller", 0) = 3
[pid 11880] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11880] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11880] munmap(0x7fd990e3c000, 32768) = 0
[pid 11880] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11880] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11880] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11880] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11880] close(4)                    = 0
[pid 11880] close(3)                    = 0
[pid 11880] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11880] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11880] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11880] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11880] open("./bus", O_RDONLY)     = 3
[pid 11880] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11880] exit_group(0)               = ?
[pid 11880] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11880, 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=0x55555567f5d0) = 11881
./strace-static-x86_64: Process 11881 attached
[pid 11881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11881] setpgid(0, 0)               = 0
[pid 11881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11881] write(3, "1000", 4)         = 4
[pid 11881] close(3)                    = 0
[pid 11881] memfd_create("syzkaller", 0) = 3
[pid 11881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11881] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11881] munmap(0x7fd990e3c000, 32768) = 0
[pid 11881] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11881] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11881] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11881] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11881] close(4)                    = 0
[pid 11881] close(3)                    = 0
[pid 11881] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11881] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11881] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11881] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11881] open("./bus", O_RDONLY)     = 3
[pid 11881] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11881] exit_group(0)               = ?
[pid 11881] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11881, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11882
./strace-static-x86_64: Process 11882 attached
[pid 11882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11882] setpgid(0, 0)               = 0
[pid 11882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11882] write(3, "1000", 4)         = 4
[pid 11882] close(3)                    = 0
[pid 11882] memfd_create("syzkaller", 0) = 3
[pid 11882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11882] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11882] munmap(0x7fd990e3c000, 32768) = 0
[pid 11882] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11882] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11882] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11882] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11882] close(4)                    = 0
[pid 11882] close(3)                    = 0
[pid 11882] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11882] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11882] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11882] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11882] open("./bus", O_RDONLY)     = 3
[pid 11882] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11882] exit_group(0)               = ?
[pid 11882] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11882, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11883 attached
, child_tidptr=0x55555567f5d0) = 11883
[pid 11883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11883] setpgid(0, 0)               = 0
[pid 11883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11883] write(3, "1000", 4)         = 4
[pid 11883] close(3)                    = 0
[pid 11883] memfd_create("syzkaller", 0) = 3
[pid 11883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11883] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11883] munmap(0x7fd990e3c000, 32768) = 0
[pid 11883] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11883] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11883] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11883] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11883] close(4)                    = 0
[pid 11883] close(3)                    = 0
[pid 11883] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11883] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11883] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11883] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11883] open("./bus", O_RDONLY)     = 3
[pid 11883] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11883] exit_group(0)               = ?
[pid 11883] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11883, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11884
./strace-static-x86_64: Process 11884 attached
[pid 11884] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11884] setpgid(0, 0)               = 0
[pid 11884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11884] write(3, "1000", 4)         = 4
[pid 11884] close(3)                    = 0
[pid 11884] memfd_create("syzkaller", 0) = 3
[pid 11884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11884] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11884] munmap(0x7fd990e3c000, 32768) = 0
[pid 11884] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11884] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11884] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11884] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11884] close(4)                    = 0
[pid 11884] close(3)                    = 0
[pid 11884] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11884] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11884] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11884] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11884] open("./bus", O_RDONLY)     = 3
[pid 11884] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11884] exit_group(0)               = ?
[pid 11884] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11884, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11885
./strace-static-x86_64: Process 11885 attached
[pid 11885] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11885] setpgid(0, 0)               = 0
[pid 11885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11885] write(3, "1000", 4)         = 4
[pid 11885] close(3)                    = 0
[pid 11885] memfd_create("syzkaller", 0) = 3
[pid 11885] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11885] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11885] munmap(0x7fd990e3c000, 32768) = 0
[pid 11885] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11885] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11885] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11885] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11885] close(4)                    = 0
[pid 11885] close(3)                    = 0
[pid 11885] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11885] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11885] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11885] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11885] open("./bus", O_RDONLY)     = 3
[pid 11885] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11885] exit_group(0)               = ?
[pid 11885] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11885, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11886 attached
, child_tidptr=0x55555567f5d0) = 11886
[pid 11886] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11886] setpgid(0, 0)               = 0
[pid 11886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11886] write(3, "1000", 4)         = 4
[pid 11886] close(3)                    = 0
[pid 11886] memfd_create("syzkaller", 0) = 3
[pid 11886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11886] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11886] munmap(0x7fd990e3c000, 32768) = 0
[pid 11886] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11886] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11886] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11886] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11886] close(4)                    = 0
[pid 11886] close(3)                    = 0
[pid 11886] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11886] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11886] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11886] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11886] open("./bus", O_RDONLY)     = 3
[pid 11886] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11886] exit_group(0)               = ?
[pid 11886] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11886, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11887 attached
, child_tidptr=0x55555567f5d0) = 11887
[pid 11887] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11887] setpgid(0, 0)               = 0
[pid 11887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11887] write(3, "1000", 4)         = 4
[pid 11887] close(3)                    = 0
[pid 11887] memfd_create("syzkaller", 0) = 3
[pid 11887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11887] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11887] munmap(0x7fd990e3c000, 32768) = 0
[pid 11887] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11887] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11887] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11887] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11887] close(4)                    = 0
[pid 11887] close(3)                    = 0
[pid 11887] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11887] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11887] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11887] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11887] open("./bus", O_RDONLY)     = 3
[pid 11887] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11887] exit_group(0)               = ?
[pid 11887] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11887, 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 11888 attached
, child_tidptr=0x55555567f5d0) = 11888
[pid 11888] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11888] setpgid(0, 0)               = 0
[pid 11888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11888] write(3, "1000", 4)         = 4
[pid 11888] close(3)                    = 0
[pid 11888] memfd_create("syzkaller", 0) = 3
[pid 11888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11888] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11888] munmap(0x7fd990e3c000, 32768) = 0
[pid 11888] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11888] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11888] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11888] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11888] close(4)                    = 0
[pid 11888] close(3)                    = 0
[pid 11888] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11888] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11888] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11888] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11888] open("./bus", O_RDONLY)     = 3
[pid 11888] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11888] exit_group(0)               = ?
[pid 11888] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11888, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11889
./strace-static-x86_64: Process 11889 attached
[pid 11889] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11889] setpgid(0, 0)               = 0
[pid 11889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11889] write(3, "1000", 4)         = 4
[pid 11889] close(3)                    = 0
[pid 11889] memfd_create("syzkaller", 0) = 3
[pid 11889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11889] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11889] munmap(0x7fd990e3c000, 32768) = 0
[pid 11889] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11889] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11889] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11889] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11889] close(4)                    = 0
[pid 11889] close(3)                    = 0
[pid 11889] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11889] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11889] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11889] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11889] open("./bus", O_RDONLY)     = 3
[pid 11889] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11889] exit_group(0)               = ?
[pid 11889] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11889, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11890
./strace-static-x86_64: Process 11890 attached
[pid 11890] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11890] setpgid(0, 0)               = 0
[pid 11890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11890] write(3, "1000", 4)         = 4
[pid 11890] close(3)                    = 0
[pid 11890] memfd_create("syzkaller", 0) = 3
[pid 11890] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11890] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11890] munmap(0x7fd990e3c000, 32768) = 0
[pid 11890] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11890] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11890] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11890] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11890] close(4)                    = 0
[pid 11890] close(3)                    = 0
[pid 11890] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11890] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11890] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11890] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11890] open("./bus", O_RDONLY)     = 3
[pid 11890] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11890] exit_group(0)               = ?
[pid 11890] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11890, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11891
./strace-static-x86_64: Process 11891 attached
[pid 11891] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11891] setpgid(0, 0)               = 0
[pid 11891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11891] write(3, "1000", 4)         = 4
[pid 11891] close(3)                    = 0
[pid 11891] memfd_create("syzkaller", 0) = 3
[pid 11891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11891] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11891] munmap(0x7fd990e3c000, 32768) = 0
[pid 11891] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11891] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11891] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11891] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11891] close(4)                    = 0
[pid 11891] close(3)                    = 0
[pid 11891] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11891] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11891] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11891] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11891] open("./bus", O_RDONLY)     = 3
[pid 11891] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11891] exit_group(0)               = ?
[pid 11891] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11891, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11892 attached
, child_tidptr=0x55555567f5d0) = 11892
[pid 11892] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11892] setpgid(0, 0)               = 0
[pid 11892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11892] write(3, "1000", 4)         = 4
[pid 11892] close(3)                    = 0
[pid 11892] memfd_create("syzkaller", 0) = 3
[pid 11892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11892] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11892] munmap(0x7fd990e3c000, 32768) = 0
[pid 11892] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11892] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11892] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11892] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11892] close(4)                    = 0
[pid 11892] close(3)                    = 0
[pid 11892] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11892] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11892] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11892] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11892] open("./bus", O_RDONLY)     = 3
[pid 11892] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11892] exit_group(0)               = ?
[pid 11892] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11892, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11893
./strace-static-x86_64: Process 11893 attached
[pid 11893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11893] setpgid(0, 0)               = 0
[pid 11893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11893] write(3, "1000", 4)         = 4
[pid 11893] close(3)                    = 0
[pid 11893] memfd_create("syzkaller", 0) = 3
[pid 11893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11893] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11893] munmap(0x7fd990e3c000, 32768) = 0
[pid 11893] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11893] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11893] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11893] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11893] close(4)                    = 0
[pid 11893] close(3)                    = 0
[pid 11893] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11893] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11893] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11893] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11893] open("./bus", O_RDONLY)     = 3
[pid 11893] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11893] exit_group(0)               = ?
[pid 11893] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11893, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11894
./strace-static-x86_64: Process 11894 attached
[pid 11894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11894] setpgid(0, 0)               = 0
[pid 11894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11894] write(3, "1000", 4)         = 4
[pid 11894] close(3)                    = 0
[pid 11894] memfd_create("syzkaller", 0) = 3
[pid 11894] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11894] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11894] munmap(0x7fd990e3c000, 32768) = 0
[pid 11894] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11894] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11894] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11894] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11894] close(4)                    = 0
[pid 11894] close(3)                    = 0
[pid 11894] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11894] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11894] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11894] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11894] open("./bus", O_RDONLY)     = 3
[pid 11894] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11894] exit_group(0)               = ?
[pid 11894] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11894, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11895
./strace-static-x86_64: Process 11895 attached
[pid 11895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11895] setpgid(0, 0)               = 0
[pid 11895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11895] write(3, "1000", 4)         = 4
[pid 11895] close(3)                    = 0
[pid 11895] memfd_create("syzkaller", 0) = 3
[pid 11895] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11895] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11895] munmap(0x7fd990e3c000, 32768) = 0
[pid 11895] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11895] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11895] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11895] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11895] close(4)                    = 0
[pid 11895] close(3)                    = 0
[pid 11895] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11895] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11895] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11895] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11895] open("./bus", O_RDONLY)     = 3
[pid 11895] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11895] exit_group(0)               = ?
[pid 11895] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11895, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11896
./strace-static-x86_64: Process 11896 attached
[pid 11896] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11896] setpgid(0, 0)               = 0
[pid 11896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11896] write(3, "1000", 4)         = 4
[pid 11896] close(3)                    = 0
[pid 11896] memfd_create("syzkaller", 0) = 3
[pid 11896] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11896] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11896] munmap(0x7fd990e3c000, 32768) = 0
[pid 11896] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11896] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11896] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11896] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11896] close(4)                    = 0
[pid 11896] close(3)                    = 0
[pid 11896] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11896] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11896] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11896] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11896] open("./bus", O_RDONLY)     = 3
[pid 11896] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11896] exit_group(0)               = ?
[pid 11896] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11896, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11897
./strace-static-x86_64: Process 11897 attached
[pid 11897] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11897] setpgid(0, 0)               = 0
[pid 11897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11897] write(3, "1000", 4)         = 4
[pid 11897] close(3)                    = 0
[pid 11897] memfd_create("syzkaller", 0) = 3
[pid 11897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11897] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11897] munmap(0x7fd990e3c000, 32768) = 0
[pid 11897] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11897] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11897] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11897] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11897] close(4)                    = 0
[pid 11897] close(3)                    = 0
[pid 11897] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11897] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11897] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11897] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11897] open("./bus", O_RDONLY)     = 3
[pid 11897] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11897] exit_group(0)               = ?
[pid 11897] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11897, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11898
./strace-static-x86_64: Process 11898 attached
[pid 11898] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11898] setpgid(0, 0)               = 0
[pid 11898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11898] write(3, "1000", 4)         = 4
[pid 11898] close(3)                    = 0
[pid 11898] memfd_create("syzkaller", 0) = 3
[pid 11898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11898] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11898] munmap(0x7fd990e3c000, 32768) = 0
[pid 11898] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11898] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11898] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11898] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11898] close(4)                    = 0
[pid 11898] close(3)                    = 0
[pid 11898] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11898] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11898] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11898] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11898] open("./bus", O_RDONLY)     = 3
[pid 11898] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11898] exit_group(0)               = ?
[pid 11898] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11898, 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=0x55555567f5d0) = 11899
./strace-static-x86_64: Process 11899 attached
[pid 11899] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11899] setpgid(0, 0)               = 0
[pid 11899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11899] write(3, "1000", 4)         = 4
[pid 11899] close(3)                    = 0
[pid 11899] memfd_create("syzkaller", 0) = 3
[pid 11899] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11899] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11899] munmap(0x7fd990e3c000, 32768) = 0
[pid 11899] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11899] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11899] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11899] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11899] close(4)                    = 0
[pid 11899] close(3)                    = 0
[pid 11899] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11899] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11899] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11899] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11899] open("./bus", O_RDONLY)     = 3
[pid 11899] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11899] exit_group(0)               = ?
[pid 11899] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11899, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11900 attached
, child_tidptr=0x55555567f5d0) = 11900
[pid 11900] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11900] setpgid(0, 0)               = 0
[pid 11900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11900] write(3, "1000", 4)         = 4
[pid 11900] close(3)                    = 0
[pid 11900] memfd_create("syzkaller", 0) = 3
[pid 11900] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11900] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11900] munmap(0x7fd990e3c000, 32768) = 0
[pid 11900] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11900] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11900] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11900] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11900] close(4)                    = 0
[pid 11900] close(3)                    = 0
[pid 11900] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11900] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11900] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11900] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11900] open("./bus", O_RDONLY)     = 3
[pid 11900] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11900] exit_group(0)               = ?
[pid 11900] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11900, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11901
./strace-static-x86_64: Process 11901 attached
[pid 11901] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11901] setpgid(0, 0)               = 0
[pid 11901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11901] write(3, "1000", 4)         = 4
[pid 11901] close(3)                    = 0
[pid 11901] memfd_create("syzkaller", 0) = 3
[pid 11901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11901] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11901] munmap(0x7fd990e3c000, 32768) = 0
[pid 11901] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11901] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11901] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11901] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11901] close(4)                    = 0
[pid 11901] close(3)                    = 0
[pid 11901] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11901] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11901] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11901] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11901] open("./bus", O_RDONLY)     = 3
[pid 11901] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11901] exit_group(0)               = ?
[pid 11901] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11901, 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 11902 attached
, child_tidptr=0x55555567f5d0) = 11902
[pid 11902] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11902] setpgid(0, 0)               = 0
[pid 11902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11902] write(3, "1000", 4)         = 4
[pid 11902] close(3)                    = 0
[pid 11902] memfd_create("syzkaller", 0) = 3
[pid 11902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11902] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11902] munmap(0x7fd990e3c000, 32768) = 0
[pid 11902] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11902] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11902] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11902] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11902] close(4)                    = 0
[pid 11902] close(3)                    = 0
[pid 11902] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11902] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11902] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11902] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11902] open("./bus", O_RDONLY)     = 3
[pid 11902] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11902] exit_group(0)               = ?
[pid 11902] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11902, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11903
./strace-static-x86_64: Process 11903 attached
[pid 11903] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11903] setpgid(0, 0)               = 0
[pid 11903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11903] write(3, "1000", 4)         = 4
[pid 11903] close(3)                    = 0
[pid 11903] memfd_create("syzkaller", 0) = 3
[pid 11903] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11903] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11903] munmap(0x7fd990e3c000, 32768) = 0
[pid 11903] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11903] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11903] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11903] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11903] close(4)                    = 0
[pid 11903] close(3)                    = 0
[pid 11903] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11903] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11903] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11903] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11903] open("./bus", O_RDONLY)     = 3
[pid 11903] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11903] exit_group(0)               = ?
[pid 11903] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11903, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11904 attached
, child_tidptr=0x55555567f5d0) = 11904
[pid 11904] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11904] setpgid(0, 0)               = 0
[pid 11904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11904] write(3, "1000", 4)         = 4
[pid 11904] close(3)                    = 0
[pid 11904] memfd_create("syzkaller", 0) = 3
[pid 11904] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11904] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11904] munmap(0x7fd990e3c000, 32768) = 0
[pid 11904] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11904] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11904] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11904] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11904] close(4)                    = 0
[pid 11904] close(3)                    = 0
[pid 11904] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11904] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11904] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11904] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11904] open("./bus", O_RDONLY)     = 3
[pid 11904] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11904] exit_group(0)               = ?
[pid 11904] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11904, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11905
./strace-static-x86_64: Process 11905 attached
[pid 11905] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11905] setpgid(0, 0)               = 0
[pid 11905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11905] write(3, "1000", 4)         = 4
[pid 11905] close(3)                    = 0
[pid 11905] memfd_create("syzkaller", 0) = 3
[pid 11905] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11905] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11905] munmap(0x7fd990e3c000, 32768) = 0
[pid 11905] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11905] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11905] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11905] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11905] close(4)                    = 0
[pid 11905] close(3)                    = 0
[pid 11905] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11905] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11905] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11905] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11905] open("./bus", O_RDONLY)     = 3
[pid 11905] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11905] exit_group(0)               = ?
[pid 11905] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11905, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11906
./strace-static-x86_64: Process 11906 attached
[pid 11906] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11906] setpgid(0, 0)               = 0
[pid 11906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11906] write(3, "1000", 4)         = 4
[pid 11906] close(3)                    = 0
[pid 11906] memfd_create("syzkaller", 0) = 3
[pid 11906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11906] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11906] munmap(0x7fd990e3c000, 32768) = 0
[pid 11906] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11906] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11906] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11906] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11906] close(4)                    = 0
[pid 11906] close(3)                    = 0
[pid 11906] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11906] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11906] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11906] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11906] open("./bus", O_RDONLY)     = 3
[pid 11906] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11906] exit_group(0)               = ?
[pid 11906] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11906, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11907 attached
, child_tidptr=0x55555567f5d0) = 11907
[pid 11907] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11907] setpgid(0, 0)               = 0
[pid 11907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11907] write(3, "1000", 4)         = 4
[pid 11907] close(3)                    = 0
[pid 11907] memfd_create("syzkaller", 0) = 3
[pid 11907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11907] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11907] munmap(0x7fd990e3c000, 32768) = 0
[pid 11907] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11907] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11907] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11907] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11907] close(4)                    = 0
[pid 11907] close(3)                    = 0
[pid 11907] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11907] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11907] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11907] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11907] open("./bus", O_RDONLY)     = 3
[pid 11907] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11907] exit_group(0)               = ?
[pid 11907] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11907, 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 11908 attached
, child_tidptr=0x55555567f5d0) = 11908
[pid 11908] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11908] setpgid(0, 0)               = 0
[pid 11908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11908] write(3, "1000", 4)         = 4
[pid 11908] close(3)                    = 0
[pid 11908] memfd_create("syzkaller", 0) = 3
[pid 11908] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11908] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11908] munmap(0x7fd990e3c000, 32768) = 0
[pid 11908] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11908] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11908] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11908] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11908] close(4)                    = 0
[pid 11908] close(3)                    = 0
[pid 11908] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11908] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11908] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11908] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11908] open("./bus", O_RDONLY)     = 3
[pid 11908] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11908] exit_group(0)               = ?
[pid 11908] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11908, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11909
./strace-static-x86_64: Process 11909 attached
[pid 11909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11909] setpgid(0, 0)               = 0
[pid 11909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11909] write(3, "1000", 4)         = 4
[pid 11909] close(3)                    = 0
[pid 11909] memfd_create("syzkaller", 0) = 3
[pid 11909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11909] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11909] munmap(0x7fd990e3c000, 32768) = 0
[pid 11909] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11909] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11909] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11909] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11909] close(4)                    = 0
[pid 11909] close(3)                    = 0
[pid 11909] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11909] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11909] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11909] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11909] open("./bus", O_RDONLY)     = 3
[pid 11909] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11909] exit_group(0)               = ?
[pid 11909] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11909, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11910 attached
 <unfinished ...>
[pid 11910] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11910] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11910
[pid 11910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11910] write(3, "1000", 4)         = 4
[pid 11910] close(3)                    = 0
[pid 11910] memfd_create("syzkaller", 0) = 3
[pid 11910] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11910] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11910] munmap(0x7fd990e3c000, 32768) = 0
[pid 11910] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11910] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11910] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11910] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11910] close(4)                    = 0
[pid 11910] close(3)                    = 0
[pid 11910] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11910] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11910] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11910] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11910] open("./bus", O_RDONLY)     = 3
[pid 11910] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11910] exit_group(0)               = ?
[pid 11910] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11910, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11911
./strace-static-x86_64: Process 11911 attached
[pid 11911] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11911] setpgid(0, 0)               = 0
[pid 11911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11911] write(3, "1000", 4)         = 4
[pid 11911] close(3)                    = 0
[pid 11911] memfd_create("syzkaller", 0) = 3
[pid 11911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11911] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11911] munmap(0x7fd990e3c000, 32768) = 0
[pid 11911] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11911] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11911] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11911] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11911] close(4)                    = 0
[pid 11911] close(3)                    = 0
[pid 11911] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11911] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11911] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11911] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11911] open("./bus", O_RDONLY)     = 3
[pid 11911] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11911] exit_group(0)               = ?
[pid 11911] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11911, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11912
./strace-static-x86_64: Process 11912 attached
[pid 11912] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11912] setpgid(0, 0)               = 0
[pid 11912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11912] write(3, "1000", 4)         = 4
[pid 11912] close(3)                    = 0
[pid 11912] memfd_create("syzkaller", 0) = 3
[pid 11912] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11912] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11912] munmap(0x7fd990e3c000, 32768) = 0
[pid 11912] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11912] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11912] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11912] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11912] close(4)                    = 0
[pid 11912] close(3)                    = 0
[pid 11912] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11912] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11912] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11912] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11912] open("./bus", O_RDONLY)     = 3
[pid 11912] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11912] exit_group(0)               = ?
[pid 11912] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11912, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11913 attached
, child_tidptr=0x55555567f5d0) = 11913
[pid 11913] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11913] setpgid(0, 0)               = 0
[pid 11913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11913] write(3, "1000", 4)         = 4
[pid 11913] close(3)                    = 0
[pid 11913] memfd_create("syzkaller", 0) = 3
[pid 11913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11913] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11913] munmap(0x7fd990e3c000, 32768) = 0
[pid 11913] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11913] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11913] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11913] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11913] close(4)                    = 0
[pid 11913] close(3)                    = 0
[pid 11913] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11913] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11913] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11913] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11913] open("./bus", O_RDONLY)     = 3
[pid 11913] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11913] exit_group(0)               = ?
[pid 11913] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11913, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11914 attached
, child_tidptr=0x55555567f5d0) = 11914
[pid 11914] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11914] setpgid(0, 0)               = 0
[pid 11914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11914] write(3, "1000", 4)         = 4
[pid 11914] close(3)                    = 0
[pid 11914] memfd_create("syzkaller", 0) = 3
[pid 11914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11914] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11914] munmap(0x7fd990e3c000, 32768) = 0
[pid 11914] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11914] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11914] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11914] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11914] close(4)                    = 0
[pid 11914] close(3)                    = 0
[pid 11914] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11914] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11914] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11914] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11914] open("./bus", O_RDONLY)     = 3
[pid 11914] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11914] exit_group(0)               = ?
[pid 11914] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11914, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11915 attached
, child_tidptr=0x55555567f5d0) = 11915
[pid 11915] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11915] setpgid(0, 0)               = 0
[pid 11915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11915] write(3, "1000", 4)         = 4
[pid 11915] close(3)                    = 0
[pid 11915] memfd_create("syzkaller", 0) = 3
[pid 11915] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11915] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11915] munmap(0x7fd990e3c000, 32768) = 0
[pid 11915] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11915] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11915] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11915] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11915] close(4)                    = 0
[pid 11915] close(3)                    = 0
[pid 11915] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11915] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11915] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11915] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11915] open("./bus", O_RDONLY)     = 3
[pid 11915] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11915] exit_group(0)               = ?
[pid 11915] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11915, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11916 attached
, child_tidptr=0x55555567f5d0) = 11916
[pid 11916] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11916] setpgid(0, 0)               = 0
[pid 11916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11916] write(3, "1000", 4)         = 4
[pid 11916] close(3)                    = 0
[pid 11916] memfd_create("syzkaller", 0) = 3
[pid 11916] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11916] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11916] munmap(0x7fd990e3c000, 32768) = 0
[pid 11916] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11916] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11916] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11916] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11916] close(4)                    = 0
[pid 11916] close(3)                    = 0
[pid 11916] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11916] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11916] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11916] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11916] open("./bus", O_RDONLY)     = 3
[pid 11916] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11916] exit_group(0)               = ?
[pid 11916] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11916, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11917
./strace-static-x86_64: Process 11917 attached
[pid 11917] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11917] setpgid(0, 0)               = 0
[pid 11917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11917] write(3, "1000", 4)         = 4
[pid 11917] close(3)                    = 0
[pid 11917] memfd_create("syzkaller", 0) = 3
[pid 11917] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11917] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11917] munmap(0x7fd990e3c000, 32768) = 0
[pid 11917] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11917] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11917] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11917] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11917] close(4)                    = 0
[pid 11917] close(3)                    = 0
[pid 11917] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11917] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11917] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11917] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11917] open("./bus", O_RDONLY)     = 3
[pid 11917] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11917] exit_group(0)               = ?
[pid 11917] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11917, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11918 attached
, child_tidptr=0x55555567f5d0) = 11918
[pid 11918] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11918] setpgid(0, 0)               = 0
[pid 11918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11918] write(3, "1000", 4)         = 4
[pid 11918] close(3)                    = 0
[pid 11918] memfd_create("syzkaller", 0) = 3
[pid 11918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11918] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11918] munmap(0x7fd990e3c000, 32768) = 0
[pid 11918] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11918] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11918] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11918] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11918] close(4)                    = 0
[pid 11918] close(3)                    = 0
[pid 11918] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11918] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11918] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11918] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11918] open("./bus", O_RDONLY)     = 3
[pid 11918] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11918] exit_group(0)               = ?
[pid 11918] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11918, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11919 attached
, child_tidptr=0x55555567f5d0) = 11919
[pid 11919] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11919] setpgid(0, 0)               = 0
[pid 11919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11919] write(3, "1000", 4)         = 4
[pid 11919] close(3)                    = 0
[pid 11919] memfd_create("syzkaller", 0) = 3
[pid 11919] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11919] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11919] munmap(0x7fd990e3c000, 32768) = 0
[pid 11919] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11919] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11919] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11919] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11919] close(4)                    = 0
[pid 11919] close(3)                    = 0
[pid 11919] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11919] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11919] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11919] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11919] open("./bus", O_RDONLY)     = 3
[pid 11919] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11919] exit_group(0)               = ?
[pid 11919] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11919, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11920 attached
, child_tidptr=0x55555567f5d0) = 11920
[pid 11920] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11920] setpgid(0, 0)               = 0
[pid 11920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11920] write(3, "1000", 4)         = 4
[pid 11920] close(3)                    = 0
[pid 11920] memfd_create("syzkaller", 0) = 3
[pid 11920] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11920] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11920] munmap(0x7fd990e3c000, 32768) = 0
[pid 11920] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11920] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11920] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11920] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11920] close(4)                    = 0
[pid 11920] close(3)                    = 0
[pid 11920] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11920] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11920] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11920] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11920] open("./bus", O_RDONLY)     = 3
[pid 11920] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11920] exit_group(0)               = ?
[pid 11920] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11920, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11921 attached
, child_tidptr=0x55555567f5d0) = 11921
[pid 11921] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11921] setpgid(0, 0)               = 0
[pid 11921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11921] write(3, "1000", 4)         = 4
[pid 11921] close(3)                    = 0
[pid 11921] memfd_create("syzkaller", 0) = 3
[pid 11921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11921] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11921] munmap(0x7fd990e3c000, 32768) = 0
[pid 11921] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11921] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11921] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11921] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11921] close(4)                    = 0
[pid 11921] close(3)                    = 0
[pid 11921] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11921] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11921] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11921] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11921] open("./bus", O_RDONLY)     = 3
[pid 11921] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11921] exit_group(0)               = ?
[pid 11921] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11921, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11922
./strace-static-x86_64: Process 11922 attached
[pid 11922] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11922] setpgid(0, 0)               = 0
[pid 11922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11922] write(3, "1000", 4)         = 4
[pid 11922] close(3)                    = 0
[pid 11922] memfd_create("syzkaller", 0) = 3
[pid 11922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11922] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11922] munmap(0x7fd990e3c000, 32768) = 0
[pid 11922] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11922] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11922] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11922] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11922] close(4)                    = 0
[pid 11922] close(3)                    = 0
[pid 11922] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11922] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11922] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11922] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11922] open("./bus", O_RDONLY)     = 3
[pid 11922] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11922] exit_group(0)               = ?
[pid 11922] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11922, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11923 attached
 <unfinished ...>
[pid 11923] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11923] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11923
[pid 11923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11923] write(3, "1000", 4)         = 4
[pid 11923] close(3)                    = 0
[pid 11923] memfd_create("syzkaller", 0) = 3
[pid 11923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11923] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11923] munmap(0x7fd990e3c000, 32768) = 0
[pid 11923] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11923] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11923] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11923] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11923] close(4)                    = 0
[pid 11923] close(3)                    = 0
[pid 11923] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11923] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11923] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11923] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11923] open("./bus", O_RDONLY)     = 3
[pid 11923] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11923] exit_group(0)               = ?
[pid 11923] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11923, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11924
./strace-static-x86_64: Process 11924 attached
[pid 11924] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11924] setpgid(0, 0)               = 0
[pid 11924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11924] write(3, "1000", 4)         = 4
[pid 11924] close(3)                    = 0
[pid 11924] memfd_create("syzkaller", 0) = 3
[pid 11924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11924] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11924] munmap(0x7fd990e3c000, 32768) = 0
[pid 11924] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11924] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11924] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11924] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11924] close(4)                    = 0
[pid 11924] close(3)                    = 0
[pid 11924] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11924] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11924] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11924] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11924] open("./bus", O_RDONLY)     = 3
[pid 11924] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11924] exit_group(0)               = ?
[pid 11924] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11924, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11925
./strace-static-x86_64: Process 11925 attached
[pid 11925] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11925] setpgid(0, 0)               = 0
[pid 11925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11925] write(3, "1000", 4)         = 4
[pid 11925] close(3)                    = 0
[pid 11925] memfd_create("syzkaller", 0) = 3
[pid 11925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11925] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11925] munmap(0x7fd990e3c000, 32768) = 0
[pid 11925] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11925] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11925] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11925] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11925] close(4)                    = 0
[pid 11925] close(3)                    = 0
[pid 11925] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11925] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11925] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11925] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11925] open("./bus", O_RDONLY)     = 3
[pid 11925] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11925] exit_group(0)               = ?
[pid 11925] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11925, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11926
./strace-static-x86_64: Process 11926 attached
[pid 11926] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11926] setpgid(0, 0)               = 0
[pid 11926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11926] write(3, "1000", 4)         = 4
[pid 11926] close(3)                    = 0
[pid 11926] memfd_create("syzkaller", 0) = 3
[pid 11926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11926] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11926] munmap(0x7fd990e3c000, 32768) = 0
[pid 11926] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11926] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11926] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11926] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11926] close(4)                    = 0
[pid 11926] close(3)                    = 0
[pid 11926] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11926] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11926] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11926] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11926] open("./bus", O_RDONLY)     = 3
[pid 11926] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11926] exit_group(0)               = ?
[pid 11926] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11926, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11927
./strace-static-x86_64: Process 11927 attached
[pid 11927] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11927] setpgid(0, 0)               = 0
[pid 11927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11927] write(3, "1000", 4)         = 4
[pid 11927] close(3)                    = 0
[pid 11927] memfd_create("syzkaller", 0) = 3
[pid 11927] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11927] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11927] munmap(0x7fd990e3c000, 32768) = 0
[pid 11927] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11927] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11927] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11927] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11927] close(4)                    = 0
[pid 11927] close(3)                    = 0
[pid 11927] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11927] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11927] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11927] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11927] open("./bus", O_RDONLY)     = 3
[pid 11927] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11927] exit_group(0)               = ?
[pid 11927] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11927, 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=0x55555567f5d0) = 11928
./strace-static-x86_64: Process 11928 attached
[pid 11928] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11928] setpgid(0, 0)               = 0
[pid 11928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11928] write(3, "1000", 4)         = 4
[pid 11928] close(3)                    = 0
[pid 11928] memfd_create("syzkaller", 0) = 3
[pid 11928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11928] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11928] munmap(0x7fd990e3c000, 32768) = 0
[pid 11928] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11928] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11928] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11928] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11928] close(4)                    = 0
[pid 11928] close(3)                    = 0
[pid 11928] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11928] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11928] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11928] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11928] open("./bus", O_RDONLY)     = 3
[pid 11928] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11928] exit_group(0)               = ?
[pid 11928] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11928, 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=0x55555567f5d0) = 11929
./strace-static-x86_64: Process 11929 attached
[pid 11929] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11929] setpgid(0, 0)               = 0
[pid 11929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11929] write(3, "1000", 4)         = 4
[pid 11929] close(3)                    = 0
[pid 11929] memfd_create("syzkaller", 0) = 3
[pid 11929] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11929] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11929] munmap(0x7fd990e3c000, 32768) = 0
[pid 11929] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11929] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11929] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11929] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11929] close(4)                    = 0
[pid 11929] close(3)                    = 0
[pid 11929] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11929] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11929] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11929] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11929] open("./bus", O_RDONLY)     = 3
[pid 11929] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11929] exit_group(0)               = ?
[pid 11929] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11929, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11930 attached
, child_tidptr=0x55555567f5d0) = 11930
[pid 11930] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11930] setpgid(0, 0)               = 0
[pid 11930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11930] write(3, "1000", 4)         = 4
[pid 11930] close(3)                    = 0
[pid 11930] memfd_create("syzkaller", 0) = 3
[pid 11930] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11930] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11930] munmap(0x7fd990e3c000, 32768) = 0
[pid 11930] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11930] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11930] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11930] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11930] close(4)                    = 0
[pid 11930] close(3)                    = 0
[pid 11930] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11930] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11930] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11930] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11930] open("./bus", O_RDONLY)     = 3
[pid 11930] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11930] exit_group(0)               = ?
[pid 11930] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11930, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11931
./strace-static-x86_64: Process 11931 attached
[pid 11931] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11931] setpgid(0, 0)               = 0
[pid 11931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11931] write(3, "1000", 4)         = 4
[pid 11931] close(3)                    = 0
[pid 11931] memfd_create("syzkaller", 0) = 3
[pid 11931] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11931] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11931] munmap(0x7fd990e3c000, 32768) = 0
[pid 11931] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11931] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11931] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11931] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11931] close(4)                    = 0
[pid 11931] close(3)                    = 0
[pid 11931] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11931] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11931] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11931] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11931] open("./bus", O_RDONLY)     = 3
[pid 11931] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11931] exit_group(0)               = ?
[pid 11931] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11931, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11932
./strace-static-x86_64: Process 11932 attached
[pid 11932] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11932] setpgid(0, 0)               = 0
[pid 11932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11932] write(3, "1000", 4)         = 4
[pid 11932] close(3)                    = 0
[pid 11932] memfd_create("syzkaller", 0) = 3
[pid 11932] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11932] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11932] munmap(0x7fd990e3c000, 32768) = 0
[pid 11932] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11932] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11932] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11932] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11932] close(4)                    = 0
[pid 11932] close(3)                    = 0
[pid 11932] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11932] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11932] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11932] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11932] open("./bus", O_RDONLY)     = 3
[pid 11932] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11932] exit_group(0)               = ?
[pid 11932] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11932, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11933
./strace-static-x86_64: Process 11933 attached
[pid 11933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11933] setpgid(0, 0)               = 0
[pid 11933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11933] write(3, "1000", 4)         = 4
[pid 11933] close(3)                    = 0
[pid 11933] memfd_create("syzkaller", 0) = 3
[pid 11933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11933] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11933] munmap(0x7fd990e3c000, 32768) = 0
[pid 11933] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11933] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11933] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11933] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11933] close(4)                    = 0
[pid 11933] close(3)                    = 0
[pid 11933] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11933] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11933] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11933] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11933] open("./bus", O_RDONLY)     = 3
[pid 11933] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11933] exit_group(0)               = ?
[pid 11933] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11933, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11934 attached
, child_tidptr=0x55555567f5d0) = 11934
[pid 11934] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11934] setpgid(0, 0)               = 0
[pid 11934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11934] write(3, "1000", 4)         = 4
[pid 11934] close(3)                    = 0
[pid 11934] memfd_create("syzkaller", 0) = 3
[pid 11934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11934] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11934] munmap(0x7fd990e3c000, 32768) = 0
[pid 11934] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11934] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11934] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11934] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11934] close(4)                    = 0
[pid 11934] close(3)                    = 0
[pid 11934] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11934] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11934] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11934] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11934] open("./bus", O_RDONLY)     = 3
[pid 11934] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11934] exit_group(0)               = ?
[pid 11934] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11934, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11935 attached
, child_tidptr=0x55555567f5d0) = 11935
[pid 11935] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11935] setpgid(0, 0)               = 0
[pid 11935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11935] write(3, "1000", 4)         = 4
[pid 11935] close(3)                    = 0
[pid 11935] memfd_create("syzkaller", 0) = 3
[pid 11935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11935] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11935] munmap(0x7fd990e3c000, 32768) = 0
[pid 11935] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11935] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11935] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11935] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11935] close(4)                    = 0
[pid 11935] close(3)                    = 0
[pid 11935] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11935] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11935] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11935] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11935] open("./bus", O_RDONLY)     = 3
[pid 11935] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11935] exit_group(0)               = ?
[pid 11935] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11935, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11936 attached
, child_tidptr=0x55555567f5d0) = 11936
[pid 11936] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11936] setpgid(0, 0)               = 0
[pid 11936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11936] write(3, "1000", 4)         = 4
[pid 11936] close(3)                    = 0
[pid 11936] memfd_create("syzkaller", 0) = 3
[pid 11936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11936] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11936] munmap(0x7fd990e3c000, 32768) = 0
[pid 11936] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11936] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11936] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11936] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11936] close(4)                    = 0
[pid 11936] close(3)                    = 0
[pid 11936] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11936] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11936] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11936] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11936] open("./bus", O_RDONLY)     = 3
[pid 11936] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11936] exit_group(0)               = ?
[pid 11936] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11936, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11937
./strace-static-x86_64: Process 11937 attached
[pid 11937] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11937] setpgid(0, 0)               = 0
[pid 11937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11937] write(3, "1000", 4)         = 4
[pid 11937] close(3)                    = 0
[pid 11937] memfd_create("syzkaller", 0) = 3
[pid 11937] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11937] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11937] munmap(0x7fd990e3c000, 32768) = 0
[pid 11937] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11937] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11937] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11937] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11937] close(4)                    = 0
[pid 11937] close(3)                    = 0
[pid 11937] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11937] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11937] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11937] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11937] open("./bus", O_RDONLY)     = 3
[pid 11937] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11937] exit_group(0)               = ?
[pid 11937] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11937, 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=0x55555567f5d0) = 11938
./strace-static-x86_64: Process 11938 attached
[pid 11938] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11938] setpgid(0, 0)               = 0
[pid 11938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11938] write(3, "1000", 4)         = 4
[pid 11938] close(3)                    = 0
[pid 11938] memfd_create("syzkaller", 0) = 3
[pid 11938] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11938] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11938] munmap(0x7fd990e3c000, 32768) = 0
[pid 11938] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11938] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11938] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11938] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11938] close(4)                    = 0
[pid 11938] close(3)                    = 0
[pid 11938] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11938] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11938] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11938] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11938] open("./bus", O_RDONLY)     = 3
[pid 11938] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11938] exit_group(0)               = ?
[pid 11938] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11938, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11939 attached
, child_tidptr=0x55555567f5d0) = 11939
[pid 11939] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11939] setpgid(0, 0)               = 0
[pid 11939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11939] write(3, "1000", 4)         = 4
[pid 11939] close(3)                    = 0
[pid 11939] memfd_create("syzkaller", 0) = 3
[pid 11939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11939] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11939] munmap(0x7fd990e3c000, 32768) = 0
[pid 11939] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11939] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11939] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11939] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11939] close(4)                    = 0
[pid 11939] close(3)                    = 0
[pid 11939] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11939] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11939] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11939] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11939] open("./bus", O_RDONLY)     = 3
[pid 11939] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11939] exit_group(0)               = ?
[pid 11939] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11939, 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=0x55555567f5d0) = 11940
./strace-static-x86_64: Process 11940 attached
[pid 11940] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11940] setpgid(0, 0)               = 0
[pid 11940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11940] write(3, "1000", 4)         = 4
[pid 11940] close(3)                    = 0
[pid 11940] memfd_create("syzkaller", 0) = 3
[pid 11940] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11940] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11940] munmap(0x7fd990e3c000, 32768) = 0
[pid 11940] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11940] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11940] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11940] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11940] close(4)                    = 0
[pid 11940] close(3)                    = 0
[pid 11940] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11940] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11940] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11940] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11940] open("./bus", O_RDONLY)     = 3
[pid 11940] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11940] exit_group(0)               = ?
[pid 11940] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11940, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11941
./strace-static-x86_64: Process 11941 attached
[pid 11941] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11941] setpgid(0, 0)               = 0
[pid 11941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11941] write(3, "1000", 4)         = 4
[pid 11941] close(3)                    = 0
[pid 11941] memfd_create("syzkaller", 0) = 3
[pid 11941] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11941] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11941] munmap(0x7fd990e3c000, 32768) = 0
[pid 11941] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11941] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11941] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11941] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11941] close(4)                    = 0
[pid 11941] close(3)                    = 0
[pid 11941] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11941] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11941] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11941] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11941] open("./bus", O_RDONLY)     = 3
[pid 11941] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11941] exit_group(0)               = ?
[pid 11941] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11941, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11942 attached
, child_tidptr=0x55555567f5d0) = 11942
[pid 11942] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11942] setpgid(0, 0)               = 0
[pid 11942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11942] write(3, "1000", 4)         = 4
[pid 11942] close(3)                    = 0
[pid 11942] memfd_create("syzkaller", 0) = 3
[pid 11942] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11942] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11942] munmap(0x7fd990e3c000, 32768) = 0
[pid 11942] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11942] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11942] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11942] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11942] close(4)                    = 0
[pid 11942] close(3)                    = 0
[pid 11942] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11942] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11942] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11942] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11942] open("./bus", O_RDONLY)     = 3
[pid 11942] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11942] exit_group(0)               = ?
[pid 11942] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11942, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11943 attached
, child_tidptr=0x55555567f5d0) = 11943
[pid 11943] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11943] setpgid(0, 0)               = 0
[pid 11943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11943] write(3, "1000", 4)         = 4
[pid 11943] close(3)                    = 0
[pid 11943] memfd_create("syzkaller", 0) = 3
[pid 11943] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11943] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11943] munmap(0x7fd990e3c000, 32768) = 0
[pid 11943] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11943] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11943] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11943] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11943] close(4)                    = 0
[pid 11943] close(3)                    = 0
[pid 11943] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11943] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11943] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11943] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11943] open("./bus", O_RDONLY)     = 3
[pid 11943] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11943] exit_group(0)               = ?
[pid 11943] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11943, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11944
./strace-static-x86_64: Process 11944 attached
[pid 11944] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11944] setpgid(0, 0)               = 0
[pid 11944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11944] write(3, "1000", 4)         = 4
[pid 11944] close(3)                    = 0
[pid 11944] memfd_create("syzkaller", 0) = 3
[pid 11944] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11944] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11944] munmap(0x7fd990e3c000, 32768) = 0
[pid 11944] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11944] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11944] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11944] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11944] close(4)                    = 0
[pid 11944] close(3)                    = 0
[pid 11944] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11944] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11944] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11944] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11944] open("./bus", O_RDONLY)     = 3
[pid 11944] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11944] exit_group(0)               = ?
[pid 11944] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11944, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11945
./strace-static-x86_64: Process 11945 attached
[pid 11945] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11945] setpgid(0, 0)               = 0
[pid 11945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11945] write(3, "1000", 4)         = 4
[pid 11945] close(3)                    = 0
[pid 11945] memfd_create("syzkaller", 0) = 3
[pid 11945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11945] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11945] munmap(0x7fd990e3c000, 32768) = 0
[pid 11945] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11945] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11945] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11945] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11945] close(4)                    = 0
[pid 11945] close(3)                    = 0
[pid 11945] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11945] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11945] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11945] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11945] open("./bus", O_RDONLY)     = 3
[pid 11945] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11945] exit_group(0)               = ?
[pid 11945] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11945, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11946
./strace-static-x86_64: Process 11946 attached
[pid 11946] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11946] setpgid(0, 0)               = 0
[pid 11946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11946] write(3, "1000", 4)         = 4
[pid 11946] close(3)                    = 0
[pid 11946] memfd_create("syzkaller", 0) = 3
[pid 11946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11946] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11946] munmap(0x7fd990e3c000, 32768) = 0
[pid 11946] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11946] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11946] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11946] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11946] close(4)                    = 0
[pid 11946] close(3)                    = 0
[pid 11946] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11946] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11946] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11946] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11946] open("./bus", O_RDONLY)     = 3
[pid 11946] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11946] exit_group(0)               = ?
[pid 11946] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11946, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11947 attached
, child_tidptr=0x55555567f5d0) = 11947
[pid 11947] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11947] setpgid(0, 0)               = 0
[pid 11947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11947] write(3, "1000", 4)         = 4
[pid 11947] close(3)                    = 0
[pid 11947] memfd_create("syzkaller", 0) = 3
[pid 11947] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11947] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11947] munmap(0x7fd990e3c000, 32768) = 0
[pid 11947] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11947] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11947] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11947] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11947] close(4)                    = 0
[pid 11947] close(3)                    = 0
[pid 11947] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11947] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11947] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11947] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11947] open("./bus", O_RDONLY)     = 3
[pid 11947] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11947] exit_group(0)               = ?
[pid 11947] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11947, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11948
./strace-static-x86_64: Process 11948 attached
[pid 11948] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11948] setpgid(0, 0)               = 0
[pid 11948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11948] write(3, "1000", 4)         = 4
[pid 11948] close(3)                    = 0
[pid 11948] memfd_create("syzkaller", 0) = 3
[pid 11948] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11948] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11948] munmap(0x7fd990e3c000, 32768) = 0
[pid 11948] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11948] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11948] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11948] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11948] close(4)                    = 0
[pid 11948] close(3)                    = 0
[pid 11948] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11948] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11948] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11948] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11948] open("./bus", O_RDONLY)     = 3
[pid 11948] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11948] exit_group(0)               = ?
[pid 11948] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11948, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11949
./strace-static-x86_64: Process 11949 attached
[pid 11949] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11949] setpgid(0, 0)               = 0
[pid 11949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11949] write(3, "1000", 4)         = 4
[pid 11949] close(3)                    = 0
[pid 11949] memfd_create("syzkaller", 0) = 3
[pid 11949] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11949] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11949] munmap(0x7fd990e3c000, 32768) = 0
[pid 11949] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11949] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11949] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11949] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11949] close(4)                    = 0
[pid 11949] close(3)                    = 0
[pid 11949] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11949] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11949] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11949] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11949] open("./bus", O_RDONLY)     = 3
[pid 11949] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11949] exit_group(0)               = ?
[pid 11949] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11949, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11950
./strace-static-x86_64: Process 11950 attached
[pid 11950] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11950] setpgid(0, 0)               = 0
[pid 11950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11950] write(3, "1000", 4)         = 4
[pid 11950] close(3)                    = 0
[pid 11950] memfd_create("syzkaller", 0) = 3
[pid 11950] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11950] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11950] munmap(0x7fd990e3c000, 32768) = 0
[pid 11950] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11950] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11950] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11950] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11950] close(4)                    = 0
[pid 11950] close(3)                    = 0
[pid 11950] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11950] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11950] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11950] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11950] open("./bus", O_RDONLY)     = 3
[pid 11950] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11950] exit_group(0)               = ?
[pid 11950] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11950, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11951 attached
 <unfinished ...>
[pid 11951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11951] setpgid(0, 0)               = 0
[pid 11951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11951
[pid 11951] write(3, "1000", 4)         = 4
[pid 11951] close(3)                    = 0
[pid 11951] memfd_create("syzkaller", 0) = 3
[pid 11951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11951] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11951] munmap(0x7fd990e3c000, 32768) = 0
[pid 11951] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11951] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11951] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11951] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11951] close(4)                    = 0
[pid 11951] close(3)                    = 0
[pid 11951] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11951] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11951] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11951] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11951] open("./bus", O_RDONLY)     = 3
[pid 11951] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11951] exit_group(0)               = ?
[pid 11951] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11951, 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=0x55555567f5d0) = 11952
./strace-static-x86_64: Process 11952 attached
[pid 11952] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11952] setpgid(0, 0)               = 0
[pid 11952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11952] write(3, "1000", 4)         = 4
[pid 11952] close(3)                    = 0
[pid 11952] memfd_create("syzkaller", 0) = 3
[pid 11952] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11952] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11952] munmap(0x7fd990e3c000, 32768) = 0
[pid 11952] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11952] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11952] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11952] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11952] close(4)                    = 0
[pid 11952] close(3)                    = 0
[pid 11952] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11952] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11952] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11952] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11952] open("./bus", O_RDONLY)     = 3
[pid 11952] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11952] exit_group(0)               = ?
[pid 11952] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11952, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11953
./strace-static-x86_64: Process 11953 attached
[pid 11953] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11953] setpgid(0, 0)               = 0
[pid 11953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11953] write(3, "1000", 4)         = 4
[pid 11953] close(3)                    = 0
[pid 11953] memfd_create("syzkaller", 0) = 3
[pid 11953] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11953] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11953] munmap(0x7fd990e3c000, 32768) = 0
[pid 11953] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11953] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11953] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11953] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11953] close(4)                    = 0
[pid 11953] close(3)                    = 0
[pid 11953] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11953] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11953] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11953] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11953] open("./bus", O_RDONLY)     = 3
[pid 11953] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11953] exit_group(0)               = ?
[pid 11953] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11953, 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 11954 attached
 <unfinished ...>
[pid 11954] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11954] setpgid(0, 0)               = 0
[pid 11954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11954
[pid 11954] <... openat resumed>)       = 3
[pid 11954] write(3, "1000", 4)         = 4
[pid 11954] close(3)                    = 0
[pid 11954] memfd_create("syzkaller", 0) = 3
[pid 11954] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11954] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11954] munmap(0x7fd990e3c000, 32768) = 0
[pid 11954] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11954] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11954] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11954] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11954] close(4)                    = 0
[pid 11954] close(3)                    = 0
[pid 11954] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11954] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11954] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11954] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11954] open("./bus", O_RDONLY)     = 3
[pid 11954] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11954] exit_group(0)               = ?
[pid 11954] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11954, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11955 attached
, child_tidptr=0x55555567f5d0) = 11955
[pid 11955] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11955] setpgid(0, 0)               = 0
[pid 11955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11955] write(3, "1000", 4)         = 4
[pid 11955] close(3)                    = 0
[pid 11955] memfd_create("syzkaller", 0) = 3
[pid 11955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11955] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11955] munmap(0x7fd990e3c000, 32768) = 0
[pid 11955] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11955] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11955] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11955] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11955] close(4)                    = 0
[pid 11955] close(3)                    = 0
[pid 11955] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11955] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11955] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11955] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11955] open("./bus", O_RDONLY)     = 3
[pid 11955] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11955] exit_group(0)               = ?
[pid 11955] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11955, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11956
./strace-static-x86_64: Process 11956 attached
[pid 11956] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11956] setpgid(0, 0)               = 0
[pid 11956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11956] write(3, "1000", 4)         = 4
[pid 11956] close(3)                    = 0
[pid 11956] memfd_create("syzkaller", 0) = 3
[pid 11956] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11956] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11956] munmap(0x7fd990e3c000, 32768) = 0
[pid 11956] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11956] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11956] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11956] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11956] close(4)                    = 0
[pid 11956] close(3)                    = 0
[pid 11956] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11956] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11956] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11956] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11956] open("./bus", O_RDONLY)     = 3
[pid 11956] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11956] exit_group(0)               = ?
[pid 11956] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11956, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11957
./strace-static-x86_64: Process 11957 attached
[pid 11957] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11957] setpgid(0, 0)               = 0
[pid 11957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11957] write(3, "1000", 4)         = 4
[pid 11957] close(3)                    = 0
[pid 11957] memfd_create("syzkaller", 0) = 3
[pid 11957] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11957] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11957] munmap(0x7fd990e3c000, 32768) = 0
[pid 11957] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11957] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11957] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11957] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11957] close(4)                    = 0
[pid 11957] close(3)                    = 0
[pid 11957] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11957] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11957] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11957] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11957] open("./bus", O_RDONLY)     = 3
[pid 11957] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11957] exit_group(0)               = ?
[pid 11957] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11957, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11958
./strace-static-x86_64: Process 11958 attached
[pid 11958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11958] setpgid(0, 0)               = 0
[pid 11958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11958] write(3, "1000", 4)         = 4
[pid 11958] close(3)                    = 0
[pid 11958] memfd_create("syzkaller", 0) = 3
[pid 11958] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11958] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11958] munmap(0x7fd990e3c000, 32768) = 0
[pid 11958] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11958] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11958] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11958] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11958] close(4)                    = 0
[pid 11958] close(3)                    = 0
[pid 11958] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11958] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11958] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11958] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11958] open("./bus", O_RDONLY)     = 3
[pid 11958] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11958] exit_group(0)               = ?
[pid 11958] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11958, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11959
./strace-static-x86_64: Process 11959 attached
[pid 11959] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11959] setpgid(0, 0)               = 0
[pid 11959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11959] write(3, "1000", 4)         = 4
[pid 11959] close(3)                    = 0
[pid 11959] memfd_create("syzkaller", 0) = 3
[pid 11959] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11959] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11959] munmap(0x7fd990e3c000, 32768) = 0
[pid 11959] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11959] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11959] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11959] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11959] close(4)                    = 0
[pid 11959] close(3)                    = 0
[pid 11959] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11959] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11959] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11959] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11959] open("./bus", O_RDONLY)     = 3
[pid 11959] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11959] exit_group(0)               = ?
[pid 11959] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11959, 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=0x55555567f5d0) = 11960
./strace-static-x86_64: Process 11960 attached
[pid 11960] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11960] setpgid(0, 0)               = 0
[pid 11960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11960] write(3, "1000", 4)         = 4
[pid 11960] close(3)                    = 0
[pid 11960] memfd_create("syzkaller", 0) = 3
[pid 11960] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11960] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11960] munmap(0x7fd990e3c000, 32768) = 0
[pid 11960] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11960] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11960] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11960] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11960] close(4)                    = 0
[pid 11960] close(3)                    = 0
[pid 11960] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11960] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11960] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11960] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11960] open("./bus", O_RDONLY)     = 3
[pid 11960] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11960] exit_group(0)               = ?
[pid 11960] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11960, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11961
./strace-static-x86_64: Process 11961 attached
[pid 11961] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11961] setpgid(0, 0)               = 0
[pid 11961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11961] write(3, "1000", 4)         = 4
[pid 11961] close(3)                    = 0
[pid 11961] memfd_create("syzkaller", 0) = 3
[pid 11961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11961] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11961] munmap(0x7fd990e3c000, 32768) = 0
[pid 11961] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11961] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11961] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11961] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11961] close(4)                    = 0
[pid 11961] close(3)                    = 0
[pid 11961] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11961] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11961] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11961] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11961] open("./bus", O_RDONLY)     = 3
[pid 11961] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11961] exit_group(0)               = ?
[pid 11961] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11961, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11962
./strace-static-x86_64: Process 11962 attached
[pid 11962] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11962] setpgid(0, 0)               = 0
[pid 11962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11962] write(3, "1000", 4)         = 4
[pid 11962] close(3)                    = 0
[pid 11962] memfd_create("syzkaller", 0) = 3
[pid 11962] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11962] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11962] munmap(0x7fd990e3c000, 32768) = 0
[pid 11962] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11962] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11962] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11962] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11962] close(4)                    = 0
[pid 11962] close(3)                    = 0
[pid 11962] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11962] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11962] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11962] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11962] open("./bus", O_RDONLY)     = 3
[pid 11962] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11962] exit_group(0)               = ?
[pid 11962] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11962, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11963 attached
 <unfinished ...>
[pid 11963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11963] setpgid(0, 0)               = 0
[pid 11963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 11963
[pid 11963] <... openat resumed>)       = 3
[pid 11963] write(3, "1000", 4)         = 4
[pid 11963] close(3)                    = 0
[pid 11963] memfd_create("syzkaller", 0) = 3
[pid 11963] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11963] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11963] munmap(0x7fd990e3c000, 32768) = 0
[pid 11963] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11963] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11963] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11963] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11963] close(4)                    = 0
[pid 11963] close(3)                    = 0
[pid 11963] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11963] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11963] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11963] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11963] open("./bus", O_RDONLY)     = 3
[pid 11963] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11963] exit_group(0)               = ?
[pid 11963] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11963, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11964 attached
, child_tidptr=0x55555567f5d0) = 11964
[pid 11964] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11964] setpgid(0, 0)               = 0
[pid 11964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11964] write(3, "1000", 4)         = 4
[pid 11964] close(3)                    = 0
[pid 11964] memfd_create("syzkaller", 0) = 3
[pid 11964] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11964] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11964] munmap(0x7fd990e3c000, 32768) = 0
[pid 11964] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11964] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11964] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11964] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11964] close(4)                    = 0
[pid 11964] close(3)                    = 0
[pid 11964] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11964] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11964] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11964] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11964] open("./bus", O_RDONLY)     = 3
[pid 11964] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11964] exit_group(0)               = ?
[pid 11964] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11964, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11965
./strace-static-x86_64: Process 11965 attached
[pid 11965] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11965] setpgid(0, 0)               = 0
[pid 11965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11965] write(3, "1000", 4)         = 4
[pid 11965] close(3)                    = 0
[pid 11965] memfd_create("syzkaller", 0) = 3
[pid 11965] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11965] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11965] munmap(0x7fd990e3c000, 32768) = 0
[pid 11965] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11965] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11965] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11965] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11965] close(4)                    = 0
[pid 11965] close(3)                    = 0
[pid 11965] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11965] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11965] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11965] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11965] open("./bus", O_RDONLY)     = 3
[pid 11965] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11965] exit_group(0)               = ?
[pid 11965] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11965, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11966 attached
, child_tidptr=0x55555567f5d0) = 11966
[pid 11966] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11966] setpgid(0, 0)               = 0
[pid 11966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11966] write(3, "1000", 4)         = 4
[pid 11966] close(3)                    = 0
[pid 11966] memfd_create("syzkaller", 0) = 3
[pid 11966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11966] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11966] munmap(0x7fd990e3c000, 32768) = 0
[pid 11966] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11966] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11966] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11966] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11966] close(4)                    = 0
[pid 11966] close(3)                    = 0
[pid 11966] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11966] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11966] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11966] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11966] open("./bus", O_RDONLY)     = 3
[pid 11966] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11966] exit_group(0)               = ?
[pid 11966] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11966, 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=0x55555567f5d0) = 11967
./strace-static-x86_64: Process 11967 attached
[pid 11967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11967] setpgid(0, 0)               = 0
[pid 11967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11967] write(3, "1000", 4)         = 4
[pid 11967] close(3)                    = 0
[pid 11967] memfd_create("syzkaller", 0) = 3
[pid 11967] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11967] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11967] munmap(0x7fd990e3c000, 32768) = 0
[pid 11967] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11967] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11967] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11967] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11967] close(4)                    = 0
[pid 11967] close(3)                    = 0
[pid 11967] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11967] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11967] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11967] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11967] open("./bus", O_RDONLY)     = 3
[pid 11967] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11967] exit_group(0)               = ?
[pid 11967] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11967, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11968 attached
, child_tidptr=0x55555567f5d0) = 11968
[pid 11968] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11968] setpgid(0, 0)               = 0
[pid 11968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11968] write(3, "1000", 4)         = 4
[pid 11968] close(3)                    = 0
[pid 11968] memfd_create("syzkaller", 0) = 3
[pid 11968] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11968] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11968] munmap(0x7fd990e3c000, 32768) = 0
[pid 11968] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11968] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11968] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11968] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11968] close(4)                    = 0
[pid 11968] close(3)                    = 0
[pid 11968] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11968] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11968] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11968] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11968] open("./bus", O_RDONLY)     = 3
[pid 11968] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11968] exit_group(0)               = ?
[pid 11968] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11968, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11969
./strace-static-x86_64: Process 11969 attached
[pid 11969] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11969] setpgid(0, 0)               = 0
[pid 11969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11969] write(3, "1000", 4)         = 4
[pid 11969] close(3)                    = 0
[pid 11969] memfd_create("syzkaller", 0) = 3
[pid 11969] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11969] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11969] munmap(0x7fd990e3c000, 32768) = 0
[pid 11969] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11969] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11969] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11969] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11969] close(4)                    = 0
[pid 11969] close(3)                    = 0
[pid 11969] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11969] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11969] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11969] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11969] open("./bus", O_RDONLY)     = 3
[pid 11969] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11969] exit_group(0)               = ?
[pid 11969] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11969, 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=0x55555567f5d0) = 11970
./strace-static-x86_64: Process 11970 attached
[pid 11970] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11970] setpgid(0, 0)               = 0
[pid 11970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11970] write(3, "1000", 4)         = 4
[pid 11970] close(3)                    = 0
[pid 11970] memfd_create("syzkaller", 0) = 3
[pid 11970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11970] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11970] munmap(0x7fd990e3c000, 32768) = 0
[pid 11970] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11970] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11970] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11970] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11970] close(4)                    = 0
[pid 11970] close(3)                    = 0
[pid 11970] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11970] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11970] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11970] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11970] open("./bus", O_RDONLY)     = 3
[pid 11970] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11970] exit_group(0)               = ?
[pid 11970] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11970, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11971
./strace-static-x86_64: Process 11971 attached
[pid 11971] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11971] setpgid(0, 0)               = 0
[pid 11971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11971] write(3, "1000", 4)         = 4
[pid 11971] close(3)                    = 0
[pid 11971] memfd_create("syzkaller", 0) = 3
[pid 11971] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11971] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11971] munmap(0x7fd990e3c000, 32768) = 0
[pid 11971] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11971] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11971] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11971] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11971] close(4)                    = 0
[pid 11971] close(3)                    = 0
[pid 11971] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11971] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11971] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11971] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11971] open("./bus", O_RDONLY)     = 3
[pid 11971] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11971] exit_group(0)               = ?
[pid 11971] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11971, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11972 attached
, child_tidptr=0x55555567f5d0) = 11972
[pid 11972] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11972] setpgid(0, 0)               = 0
[pid 11972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11972] write(3, "1000", 4)         = 4
[pid 11972] close(3)                    = 0
[pid 11972] memfd_create("syzkaller", 0) = 3
[pid 11972] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11972] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11972] munmap(0x7fd990e3c000, 32768) = 0
[pid 11972] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11972] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11972] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11972] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11972] close(4)                    = 0
[pid 11972] close(3)                    = 0
[pid 11972] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11972] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11972] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11972] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11972] open("./bus", O_RDONLY)     = 3
[pid 11972] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11972] exit_group(0)               = ?
[pid 11972] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11972, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11973
./strace-static-x86_64: Process 11973 attached
[pid 11973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11973] setpgid(0, 0)               = 0
[pid 11973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11973] write(3, "1000", 4)         = 4
[pid 11973] close(3)                    = 0
[pid 11973] memfd_create("syzkaller", 0) = 3
[pid 11973] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11973] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11973] munmap(0x7fd990e3c000, 32768) = 0
[pid 11973] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11973] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11973] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11973] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11973] close(4)                    = 0
[pid 11973] close(3)                    = 0
[pid 11973] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11973] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11973] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11973] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11973] open("./bus", O_RDONLY)     = 3
[pid 11973] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11973] exit_group(0)               = ?
[pid 11973] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11973, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11974
./strace-static-x86_64: Process 11974 attached
[pid 11974] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11974] setpgid(0, 0)               = 0
[pid 11974] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11974] write(3, "1000", 4)         = 4
[pid 11974] close(3)                    = 0
[pid 11974] memfd_create("syzkaller", 0) = 3
[pid 11974] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11974] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11974] munmap(0x7fd990e3c000, 32768) = 0
[pid 11974] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11974] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11974] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11974] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11974] close(4)                    = 0
[pid 11974] close(3)                    = 0
[pid 11974] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11974] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11974] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11974] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11974] open("./bus", O_RDONLY)     = 3
[pid 11974] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11974] exit_group(0)               = ?
[pid 11974] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11974, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11975
./strace-static-x86_64: Process 11975 attached
[pid 11975] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11975] setpgid(0, 0)               = 0
[pid 11975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11975] write(3, "1000", 4)         = 4
[pid 11975] close(3)                    = 0
[pid 11975] memfd_create("syzkaller", 0) = 3
[pid 11975] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11975] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11975] munmap(0x7fd990e3c000, 32768) = 0
[pid 11975] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11975] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11975] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11975] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11975] close(4)                    = 0
[pid 11975] close(3)                    = 0
[pid 11975] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11975] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11975] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11975] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11975] open("./bus", O_RDONLY)     = 3
[pid 11975] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11975] exit_group(0)               = ?
[pid 11975] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11975, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11976
./strace-static-x86_64: Process 11976 attached
[pid 11976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11976] setpgid(0, 0)               = 0
[pid 11976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11976] write(3, "1000", 4)         = 4
[pid 11976] close(3)                    = 0
[pid 11976] memfd_create("syzkaller", 0) = 3
[pid 11976] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11976] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11976] munmap(0x7fd990e3c000, 32768) = 0
[pid 11976] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11976] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11976] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11976] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11976] close(4)                    = 0
[pid 11976] close(3)                    = 0
[pid 11976] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11976] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11976] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11976] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11976] open("./bus", O_RDONLY)     = 3
[pid 11976] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11976] exit_group(0)               = ?
[pid 11976] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11976, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11977
./strace-static-x86_64: Process 11977 attached
[pid 11977] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11977] setpgid(0, 0)               = 0
[pid 11977] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11977] write(3, "1000", 4)         = 4
[pid 11977] close(3)                    = 0
[pid 11977] memfd_create("syzkaller", 0) = 3
[pid 11977] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11977] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11977] munmap(0x7fd990e3c000, 32768) = 0
[pid 11977] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11977] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11977] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11977] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11977] close(4)                    = 0
[pid 11977] close(3)                    = 0
[pid 11977] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11977] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11977] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11977] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11977] open("./bus", O_RDONLY)     = 3
[pid 11977] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11977] exit_group(0)               = ?
[pid 11977] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11977, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11978 attached
, child_tidptr=0x55555567f5d0) = 11978
[pid 11978] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11978] setpgid(0, 0)               = 0
[pid 11978] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11978] write(3, "1000", 4)         = 4
[pid 11978] close(3)                    = 0
[pid 11978] memfd_create("syzkaller", 0) = 3
[pid 11978] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11978] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11978] munmap(0x7fd990e3c000, 32768) = 0
[pid 11978] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11978] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11978] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11978] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11978] close(4)                    = 0
[pid 11978] close(3)                    = 0
[pid 11978] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11978] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11978] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11978] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11978] open("./bus", O_RDONLY)     = 3
[pid 11978] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11978] exit_group(0)               = ?
[pid 11978] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11978, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11979
./strace-static-x86_64: Process 11979 attached
[pid 11979] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11979] setpgid(0, 0)               = 0
[pid 11979] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11979] write(3, "1000", 4)         = 4
[pid 11979] close(3)                    = 0
[pid 11979] memfd_create("syzkaller", 0) = 3
[pid 11979] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11979] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11979] munmap(0x7fd990e3c000, 32768) = 0
[pid 11979] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11979] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11979] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11979] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11979] close(4)                    = 0
[pid 11979] close(3)                    = 0
[pid 11979] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11979] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11979] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11979] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11979] open("./bus", O_RDONLY)     = 3
[pid 11979] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11979] exit_group(0)               = ?
[pid 11979] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11979, 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 11980 attached
, child_tidptr=0x55555567f5d0) = 11980
[pid 11980] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11980] setpgid(0, 0)               = 0
[pid 11980] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11980] write(3, "1000", 4)         = 4
[pid 11980] close(3)                    = 0
[pid 11980] memfd_create("syzkaller", 0) = 3
[pid 11980] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11980] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11980] munmap(0x7fd990e3c000, 32768) = 0
[pid 11980] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11980] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11980] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11980] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11980] close(4)                    = 0
[pid 11980] close(3)                    = 0
[pid 11980] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11980] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11980] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11980] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11980] open("./bus", O_RDONLY)     = 3
[pid 11980] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11980] exit_group(0)               = ?
[pid 11980] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11980, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11981 attached
, child_tidptr=0x55555567f5d0) = 11981
[pid 11981] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11981] setpgid(0, 0)               = 0
[pid 11981] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11981] write(3, "1000", 4)         = 4
[pid 11981] close(3)                    = 0
[pid 11981] memfd_create("syzkaller", 0) = 3
[pid 11981] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11981] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11981] munmap(0x7fd990e3c000, 32768) = 0
[pid 11981] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11981] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11981] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11981] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11981] close(4)                    = 0
[pid 11981] close(3)                    = 0
[pid 11981] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11981] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11981] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11981] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11981] open("./bus", O_RDONLY)     = 3
[pid 11981] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11981] exit_group(0)               = ?
[pid 11981] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11981, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11982
./strace-static-x86_64: Process 11982 attached
[pid 11982] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11982] setpgid(0, 0)               = 0
[pid 11982] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11982] write(3, "1000", 4)         = 4
[pid 11982] close(3)                    = 0
[pid 11982] memfd_create("syzkaller", 0) = 3
[pid 11982] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11982] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11982] munmap(0x7fd990e3c000, 32768) = 0
[pid 11982] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11982] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11982] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11982] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11982] close(4)                    = 0
[pid 11982] close(3)                    = 0
[pid 11982] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11982] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11982] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11982] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11982] open("./bus", O_RDONLY)     = 3
[pid 11982] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11982] exit_group(0)               = ?
[pid 11982] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11982, 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=0x55555567f5d0) = 11983
./strace-static-x86_64: Process 11983 attached
[pid 11983] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11983] setpgid(0, 0)               = 0
[pid 11983] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11983] write(3, "1000", 4)         = 4
[pid 11983] close(3)                    = 0
[pid 11983] memfd_create("syzkaller", 0) = 3
[pid 11983] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11983] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11983] munmap(0x7fd990e3c000, 32768) = 0
[pid 11983] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11983] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11983] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11983] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11983] close(4)                    = 0
[pid 11983] close(3)                    = 0
[pid 11983] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11983] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11983] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11983] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11983] open("./bus", O_RDONLY)     = 3
[pid 11983] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11983] exit_group(0)               = ?
[pid 11983] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11983, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11984
./strace-static-x86_64: Process 11984 attached
[pid 11984] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11984] setpgid(0, 0)               = 0
[pid 11984] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11984] write(3, "1000", 4)         = 4
[pid 11984] close(3)                    = 0
[pid 11984] memfd_create("syzkaller", 0) = 3
[pid 11984] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11984] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11984] munmap(0x7fd990e3c000, 32768) = 0
[pid 11984] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11984] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11984] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11984] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11984] close(4)                    = 0
[pid 11984] close(3)                    = 0
[pid 11984] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11984] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11984] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11984] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11984] open("./bus", O_RDONLY)     = 3
[pid 11984] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11984] exit_group(0)               = ?
[pid 11984] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11984, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11985
./strace-static-x86_64: Process 11985 attached
[pid 11985] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11985] setpgid(0, 0)               = 0
[pid 11985] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11985] write(3, "1000", 4)         = 4
[pid 11985] close(3)                    = 0
[pid 11985] memfd_create("syzkaller", 0) = 3
[pid 11985] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11985] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11985] munmap(0x7fd990e3c000, 32768) = 0
[pid 11985] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11985] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11985] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11985] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11985] close(4)                    = 0
[pid 11985] close(3)                    = 0
[pid 11985] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11985] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11985] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11985] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11985] open("./bus", O_RDONLY)     = 3
[pid 11985] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11985] exit_group(0)               = ?
[pid 11985] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11985, 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 11986 attached
, child_tidptr=0x55555567f5d0) = 11986
[pid 11986] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11986] setpgid(0, 0)               = 0
[pid 11986] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11986] write(3, "1000", 4)         = 4
[pid 11986] close(3)                    = 0
[pid 11986] memfd_create("syzkaller", 0) = 3
[pid 11986] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11986] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11986] munmap(0x7fd990e3c000, 32768) = 0
[pid 11986] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11986] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11986] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11986] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11986] close(4)                    = 0
[pid 11986] close(3)                    = 0
[pid 11986] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11986] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11986] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11986] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11986] open("./bus", O_RDONLY)     = 3
[pid 11986] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11986] exit_group(0)               = ?
[pid 11986] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11986, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11987
./strace-static-x86_64: Process 11987 attached
[pid 11987] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11987] setpgid(0, 0)               = 0
[pid 11987] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11987] write(3, "1000", 4)         = 4
[pid 11987] close(3)                    = 0
[pid 11987] memfd_create("syzkaller", 0) = 3
[pid 11987] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11987] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11987] munmap(0x7fd990e3c000, 32768) = 0
[pid 11987] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11987] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11987] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11987] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11987] close(4)                    = 0
[pid 11987] close(3)                    = 0
[pid 11987] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11987] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11987] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11987] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11987] open("./bus", O_RDONLY)     = 3
[pid 11987] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11987] exit_group(0)               = ?
[pid 11987] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11987, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11988 attached
, child_tidptr=0x55555567f5d0) = 11988
[pid 11988] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11988] setpgid(0, 0)               = 0
[pid 11988] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11988] write(3, "1000", 4)         = 4
[pid 11988] close(3)                    = 0
[pid 11988] memfd_create("syzkaller", 0) = 3
[pid 11988] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11988] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11988] munmap(0x7fd990e3c000, 32768) = 0
[pid 11988] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11988] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11988] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11988] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11988] close(4)                    = 0
[pid 11988] close(3)                    = 0
[pid 11988] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11988] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11988] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11988] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11988] open("./bus", O_RDONLY)     = 3
[pid 11988] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11988] exit_group(0)               = ?
[pid 11988] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11988, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11989
./strace-static-x86_64: Process 11989 attached
[pid 11989] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11989] setpgid(0, 0)               = 0
[pid 11989] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11989] write(3, "1000", 4)         = 4
[pid 11989] close(3)                    = 0
[pid 11989] memfd_create("syzkaller", 0) = 3
[pid 11989] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11989] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11989] munmap(0x7fd990e3c000, 32768) = 0
[pid 11989] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11989] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11989] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11989] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11989] close(4)                    = 0
[pid 11989] close(3)                    = 0
[pid 11989] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11989] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11989] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11989] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11989] open("./bus", O_RDONLY)     = 3
[pid 11989] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11989] exit_group(0)               = ?
[pid 11989] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11989, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11990 attached
, child_tidptr=0x55555567f5d0) = 11990
[pid 11990] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11990] setpgid(0, 0)               = 0
[pid 11990] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11990] write(3, "1000", 4)         = 4
[pid 11990] close(3)                    = 0
[pid 11990] memfd_create("syzkaller", 0) = 3
[pid 11990] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11990] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11990] munmap(0x7fd990e3c000, 32768) = 0
[pid 11990] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11990] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11990] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11990] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11990] close(4)                    = 0
[pid 11990] close(3)                    = 0
[pid 11990] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11990] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11990] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11990] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11990] open("./bus", O_RDONLY)     = 3
[pid 11990] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11990] exit_group(0)               = ?
[pid 11990] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11990, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11991
./strace-static-x86_64: Process 11991 attached
[pid 11991] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11991] setpgid(0, 0)               = 0
[pid 11991] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11991] write(3, "1000", 4)         = 4
[pid 11991] close(3)                    = 0
[pid 11991] memfd_create("syzkaller", 0) = 3
[pid 11991] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11991] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11991] munmap(0x7fd990e3c000, 32768) = 0
[pid 11991] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11991] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11991] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11991] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11991] close(4)                    = 0
[pid 11991] close(3)                    = 0
[pid 11991] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11991] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11991] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11991] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11991] open("./bus", O_RDONLY)     = 3
[pid 11991] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11991] exit_group(0)               = ?
[pid 11991] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11991, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11992 attached
, child_tidptr=0x55555567f5d0) = 11992
[pid 11992] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11992] setpgid(0, 0)               = 0
[pid 11992] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11992] write(3, "1000", 4)         = 4
[pid 11992] close(3)                    = 0
[pid 11992] memfd_create("syzkaller", 0) = 3
[pid 11992] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11992] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11992] munmap(0x7fd990e3c000, 32768) = 0
[pid 11992] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11992] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11992] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11992] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11992] close(4)                    = 0
[pid 11992] close(3)                    = 0
[pid 11992] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11992] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11992] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11992] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11992] open("./bus", O_RDONLY)     = 3
[pid 11992] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11992] exit_group(0)               = ?
[pid 11992] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11992, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 11993 attached
, child_tidptr=0x55555567f5d0) = 11993
[pid 11993] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11993] setpgid(0, 0)               = 0
[pid 11993] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11993] write(3, "1000", 4)         = 4
[pid 11993] close(3)                    = 0
[pid 11993] memfd_create("syzkaller", 0) = 3
[pid 11993] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11993] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11993] munmap(0x7fd990e3c000, 32768) = 0
[pid 11993] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11993] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11993] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11993] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11993] close(4)                    = 0
[pid 11993] close(3)                    = 0
[pid 11993] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11993] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11993] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11993] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11993] open("./bus", O_RDONLY)     = 3
[pid 11993] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11993] exit_group(0)               = ?
[pid 11993] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11993, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11994
./strace-static-x86_64: Process 11994 attached
[pid 11994] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11994] setpgid(0, 0)               = 0
[pid 11994] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11994] write(3, "1000", 4)         = 4
[pid 11994] close(3)                    = 0
[pid 11994] memfd_create("syzkaller", 0) = 3
[pid 11994] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11994] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11994] munmap(0x7fd990e3c000, 32768) = 0
[pid 11994] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11994] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11994] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11994] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11994] close(4)                    = 0
[pid 11994] close(3)                    = 0
[pid 11994] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11994] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11994] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11994] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11994] open("./bus", O_RDONLY)     = 3
[pid 11994] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11994] exit_group(0)               = ?
[pid 11994] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11994, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11995
./strace-static-x86_64: Process 11995 attached
[pid 11995] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11995] setpgid(0, 0)               = 0
[pid 11995] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11995] write(3, "1000", 4)         = 4
[pid 11995] close(3)                    = 0
[pid 11995] memfd_create("syzkaller", 0) = 3
[pid 11995] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11995] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11995] munmap(0x7fd990e3c000, 32768) = 0
[pid 11995] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11995] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11995] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11995] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11995] close(4)                    = 0
[pid 11995] close(3)                    = 0
[pid 11995] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11995] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11995] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11995] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11995] open("./bus", O_RDONLY)     = 3
[pid 11995] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11995] exit_group(0)               = ?
[pid 11995] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11995, 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=0x55555567f5d0) = 11996
./strace-static-x86_64: Process 11996 attached
[pid 11996] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11996] setpgid(0, 0)               = 0
[pid 11996] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11996] write(3, "1000", 4)         = 4
[pid 11996] close(3)                    = 0
[pid 11996] memfd_create("syzkaller", 0) = 3
[pid 11996] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11996] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11996] munmap(0x7fd990e3c000, 32768) = 0
[pid 11996] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11996] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11996] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11996] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11996] close(4)                    = 0
[pid 11996] close(3)                    = 0
[pid 11996] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11996] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11996] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11996] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11996] open("./bus", O_RDONLY)     = 3
[pid 11996] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11996] exit_group(0)               = ?
[pid 11996] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11996, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11997
./strace-static-x86_64: Process 11997 attached
[pid 11997] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11997] setpgid(0, 0)               = 0
[pid 11997] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11997] write(3, "1000", 4)         = 4
[pid 11997] close(3)                    = 0
[pid 11997] memfd_create("syzkaller", 0) = 3
[pid 11997] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11997] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11997] munmap(0x7fd990e3c000, 32768) = 0
[pid 11997] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11997] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11997] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11997] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11997] close(4)                    = 0
[pid 11997] close(3)                    = 0
[pid 11997] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11997] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11997] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11997] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11997] open("./bus", O_RDONLY)     = 3
[pid 11997] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11997] exit_group(0)               = ?
[pid 11997] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11997, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11998
./strace-static-x86_64: Process 11998 attached
[pid 11998] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11998] setpgid(0, 0)               = 0
[pid 11998] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11998] write(3, "1000", 4)         = 4
[pid 11998] close(3)                    = 0
[pid 11998] memfd_create("syzkaller", 0) = 3
[pid 11998] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11998] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11998] munmap(0x7fd990e3c000, 32768) = 0
[pid 11998] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11998] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11998] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11998] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11998] close(4)                    = 0
[pid 11998] close(3)                    = 0
[pid 11998] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11998] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11998] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11998] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11998] open("./bus", O_RDONLY)     = 3
[pid 11998] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11998] exit_group(0)               = ?
[pid 11998] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11998, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 11999
./strace-static-x86_64: Process 11999 attached
[pid 11999] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 11999] setpgid(0, 0)               = 0
[pid 11999] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 11999] write(3, "1000", 4)         = 4
[pid 11999] close(3)                    = 0
[pid 11999] memfd_create("syzkaller", 0) = 3
[pid 11999] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 11999] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 11999] munmap(0x7fd990e3c000, 32768) = 0
[pid 11999] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 11999] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11999] ioctl(4, LOOP_CLR_FD)       = 0
[pid 11999] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 11999] close(4)                    = 0
[pid 11999] close(3)                    = 0
[pid 11999] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 11999] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 11999] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 11999] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 11999] open("./bus", O_RDONLY)     = 3
[pid 11999] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 11999] exit_group(0)               = ?
[pid 11999] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11999, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12000
./strace-static-x86_64: Process 12000 attached
[pid 12000] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12000] setpgid(0, 0)               = 0
[pid 12000] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12000] write(3, "1000", 4)         = 4
[pid 12000] close(3)                    = 0
[pid 12000] memfd_create("syzkaller", 0) = 3
[pid 12000] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12000] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12000] munmap(0x7fd990e3c000, 32768) = 0
[pid 12000] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12000] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12000] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12000] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12000] close(4)                    = 0
[pid 12000] close(3)                    = 0
[pid 12000] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12000] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12000] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12000] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12000] open("./bus", O_RDONLY)     = 3
[pid 12000] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12000] exit_group(0)               = ?
[pid 12000] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12000, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12001
./strace-static-x86_64: Process 12001 attached
[pid 12001] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12001] setpgid(0, 0)               = 0
[pid 12001] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12001] write(3, "1000", 4)         = 4
[pid 12001] close(3)                    = 0
[pid 12001] memfd_create("syzkaller", 0) = 3
[pid 12001] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12001] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12001] munmap(0x7fd990e3c000, 32768) = 0
[pid 12001] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12001] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12001] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12001] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12001] close(4)                    = 0
[pid 12001] close(3)                    = 0
[pid 12001] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12001] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12001] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12001] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12001] open("./bus", O_RDONLY)     = 3
[pid 12001] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12001] exit_group(0)               = ?
[pid 12001] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12001, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12002
./strace-static-x86_64: Process 12002 attached
[pid 12002] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12002] setpgid(0, 0)               = 0
[pid 12002] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12002] write(3, "1000", 4)         = 4
[pid 12002] close(3)                    = 0
[pid 12002] memfd_create("syzkaller", 0) = 3
[pid 12002] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12002] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12002] munmap(0x7fd990e3c000, 32768) = 0
[pid 12002] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12002] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12002] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12002] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12002] close(4)                    = 0
[pid 12002] close(3)                    = 0
[pid 12002] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12002] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12002] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12002] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12002] open("./bus", O_RDONLY)     = 3
[pid 12002] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12002] exit_group(0)               = ?
[pid 12002] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12002, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12003
./strace-static-x86_64: Process 12003 attached
[pid 12003] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12003] setpgid(0, 0)               = 0
[pid 12003] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12003] write(3, "1000", 4)         = 4
[pid 12003] close(3)                    = 0
[pid 12003] memfd_create("syzkaller", 0) = 3
[pid 12003] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12003] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12003] munmap(0x7fd990e3c000, 32768) = 0
[pid 12003] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12003] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12003] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12003] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12003] close(4)                    = 0
[pid 12003] close(3)                    = 0
[pid 12003] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12003] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12003] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12003] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12003] open("./bus", O_RDONLY)     = 3
[pid 12003] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12003] exit_group(0)               = ?
[pid 12003] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12003, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12004
./strace-static-x86_64: Process 12004 attached
[pid 12004] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12004] setpgid(0, 0)               = 0
[pid 12004] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12004] write(3, "1000", 4)         = 4
[pid 12004] close(3)                    = 0
[pid 12004] memfd_create("syzkaller", 0) = 3
[pid 12004] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12004] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12004] munmap(0x7fd990e3c000, 32768) = 0
[pid 12004] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12004] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12004] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12004] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12004] close(4)                    = 0
[pid 12004] close(3)                    = 0
[pid 12004] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12004] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12004] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12004] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12004] open("./bus", O_RDONLY)     = 3
[pid 12004] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12004] exit_group(0)               = ?
[pid 12004] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12004, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12005 attached
, child_tidptr=0x55555567f5d0) = 12005
[pid 12005] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12005] setpgid(0, 0)               = 0
[pid 12005] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12005] write(3, "1000", 4)         = 4
[pid 12005] close(3)                    = 0
[pid 12005] memfd_create("syzkaller", 0) = 3
[pid 12005] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12005] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12005] munmap(0x7fd990e3c000, 32768) = 0
[pid 12005] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12005] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12005] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12005] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12005] close(4)                    = 0
[pid 12005] close(3)                    = 0
[pid 12005] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12005] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12005] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12005] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12005] open("./bus", O_RDONLY)     = 3
[pid 12005] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12005] exit_group(0)               = ?
[pid 12005] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12005, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12006 attached
, child_tidptr=0x55555567f5d0) = 12006
[pid 12006] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12006] setpgid(0, 0)               = 0
[pid 12006] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12006] write(3, "1000", 4)         = 4
[pid 12006] close(3)                    = 0
[pid 12006] memfd_create("syzkaller", 0) = 3
[pid 12006] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12006] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12006] munmap(0x7fd990e3c000, 32768) = 0
[pid 12006] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12006] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12006] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12006] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12006] close(4)                    = 0
[pid 12006] close(3)                    = 0
[pid 12006] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12006] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12006] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12006] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12006] open("./bus", O_RDONLY)     = 3
[pid 12006] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12006] exit_group(0)               = ?
[pid 12006] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12006, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12007
./strace-static-x86_64: Process 12007 attached
[pid 12007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12007] setpgid(0, 0)               = 0
[pid 12007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12007] write(3, "1000", 4)         = 4
[pid 12007] close(3)                    = 0
[pid 12007] memfd_create("syzkaller", 0) = 3
[pid 12007] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12007] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12007] munmap(0x7fd990e3c000, 32768) = 0
[pid 12007] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12007] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12007] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12007] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12007] close(4)                    = 0
[pid 12007] close(3)                    = 0
[pid 12007] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12007] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12007] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12007] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12007] open("./bus", O_RDONLY)     = 3
[pid 12007] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12007] exit_group(0)               = ?
[pid 12007] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12007, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12008
./strace-static-x86_64: Process 12008 attached
[pid 12008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12008] setpgid(0, 0)               = 0
[pid 12008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12008] write(3, "1000", 4)         = 4
[pid 12008] close(3)                    = 0
[pid 12008] memfd_create("syzkaller", 0) = 3
[pid 12008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12008] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12008] munmap(0x7fd990e3c000, 32768) = 0
[pid 12008] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12008] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12008] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12008] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12008] close(4)                    = 0
[pid 12008] close(3)                    = 0
[pid 12008] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12008] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12008] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12008] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12008] open("./bus", O_RDONLY)     = 3
[pid 12008] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12008] exit_group(0)               = ?
[pid 12008] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12008, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12009 attached
, child_tidptr=0x55555567f5d0) = 12009
[pid 12009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12009] setpgid(0, 0)               = 0
[pid 12009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12009] write(3, "1000", 4)         = 4
[pid 12009] close(3)                    = 0
[pid 12009] memfd_create("syzkaller", 0) = 3
[pid 12009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12009] munmap(0x7fd990e3c000, 32768) = 0
[pid 12009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12009] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12009] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12009] close(4)                    = 0
[pid 12009] close(3)                    = 0
[pid 12009] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12009] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12009] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12009] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12009] open("./bus", O_RDONLY)     = 3
[pid 12009] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12009] exit_group(0)               = ?
[pid 12009] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12009, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12010
./strace-static-x86_64: Process 12010 attached
[pid 12010] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12010] setpgid(0, 0)               = 0
[pid 12010] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12010] write(3, "1000", 4)         = 4
[pid 12010] close(3)                    = 0
[pid 12010] memfd_create("syzkaller", 0) = 3
[pid 12010] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12010] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12010] munmap(0x7fd990e3c000, 32768) = 0
[pid 12010] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12010] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12010] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12010] close(4)                    = 0
[pid 12010] close(3)                    = 0
[pid 12010] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12010] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12010] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12010] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12010] open("./bus", O_RDONLY)     = 3
[pid 12010] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12010] exit_group(0)               = ?
[pid 12010] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12010, 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 12011 attached
, child_tidptr=0x55555567f5d0) = 12011
[pid 12011] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12011] setpgid(0, 0)               = 0
[pid 12011] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12011] write(3, "1000", 4)         = 4
[pid 12011] close(3)                    = 0
[pid 12011] memfd_create("syzkaller", 0) = 3
[pid 12011] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12011] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12011] munmap(0x7fd990e3c000, 32768) = 0
[pid 12011] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12011] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12011] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12011] close(4)                    = 0
[pid 12011] close(3)                    = 0
[pid 12011] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12011] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12011] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12011] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12011] open("./bus", O_RDONLY)     = 3
[pid 12011] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12011] exit_group(0)               = ?
[pid 12011] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12011, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12012 attached
, child_tidptr=0x55555567f5d0) = 12012
[pid 12012] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12012] setpgid(0, 0)               = 0
[pid 12012] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12012] write(3, "1000", 4)         = 4
[pid 12012] close(3)                    = 0
[pid 12012] memfd_create("syzkaller", 0) = 3
[pid 12012] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12012] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12012] munmap(0x7fd990e3c000, 32768) = 0
[pid 12012] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12012] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12012] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12012] close(4)                    = 0
[pid 12012] close(3)                    = 0
[pid 12012] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12012] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12012] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12012] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12012] open("./bus", O_RDONLY)     = 3
[pid 12012] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12012] exit_group(0)               = ?
[pid 12012] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12012, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12013
./strace-static-x86_64: Process 12013 attached
[pid 12013] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12013] setpgid(0, 0)               = 0
[pid 12013] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12013] write(3, "1000", 4)         = 4
[pid 12013] close(3)                    = 0
[pid 12013] memfd_create("syzkaller", 0) = 3
[pid 12013] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12013] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12013] munmap(0x7fd990e3c000, 32768) = 0
[pid 12013] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12013] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12013] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12013] close(4)                    = 0
[pid 12013] close(3)                    = 0
[pid 12013] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12013] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12013] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12013] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12013] open("./bus", O_RDONLY)     = 3
[pid 12013] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12013] exit_group(0)               = ?
[pid 12013] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12013, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12014 attached
, child_tidptr=0x55555567f5d0) = 12014
[pid 12014] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12014] setpgid(0, 0)               = 0
[pid 12014] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12014] write(3, "1000", 4)         = 4
[pid 12014] close(3)                    = 0
[pid 12014] memfd_create("syzkaller", 0) = 3
[pid 12014] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12014] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12014] munmap(0x7fd990e3c000, 32768) = 0
[pid 12014] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12014] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12014] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12014] close(4)                    = 0
[pid 12014] close(3)                    = 0
[pid 12014] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12014] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12014] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12014] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12014] open("./bus", O_RDONLY)     = 3
[pid 12014] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12014] exit_group(0)               = ?
[pid 12014] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12014, 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 12015 attached
, child_tidptr=0x55555567f5d0) = 12015
[pid 12015] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12015] setpgid(0, 0)               = 0
[pid 12015] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12015] write(3, "1000", 4)         = 4
[pid 12015] close(3)                    = 0
[pid 12015] memfd_create("syzkaller", 0) = 3
[pid 12015] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12015] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12015] munmap(0x7fd990e3c000, 32768) = 0
[pid 12015] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12015] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12015] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12015] close(4)                    = 0
[pid 12015] close(3)                    = 0
[pid 12015] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12015] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12015] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12015] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12015] open("./bus", O_RDONLY)     = 3
[pid 12015] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12015] exit_group(0)               = ?
[pid 12015] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12015, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12016 attached
, child_tidptr=0x55555567f5d0) = 12016
[pid 12016] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12016] setpgid(0, 0)               = 0
[pid 12016] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12016] write(3, "1000", 4)         = 4
[pid 12016] close(3)                    = 0
[pid 12016] memfd_create("syzkaller", 0) = 3
[pid 12016] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12016] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12016] munmap(0x7fd990e3c000, 32768) = 0
[pid 12016] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12016] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12016] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12016] close(4)                    = 0
[pid 12016] close(3)                    = 0
[pid 12016] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12016] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12016] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12016] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12016] open("./bus", O_RDONLY)     = 3
[pid 12016] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12016] exit_group(0)               = ?
[pid 12016] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12016, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12017 attached
, child_tidptr=0x55555567f5d0) = 12017
[pid 12017] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12017] setpgid(0, 0)               = 0
[pid 12017] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12017] write(3, "1000", 4)         = 4
[pid 12017] close(3)                    = 0
[pid 12017] memfd_create("syzkaller", 0) = 3
[pid 12017] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12017] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12017] munmap(0x7fd990e3c000, 32768) = 0
[pid 12017] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12017] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12017] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12017] close(4)                    = 0
[pid 12017] close(3)                    = 0
[pid 12017] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12017] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12017] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12017] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12017] open("./bus", O_RDONLY)     = 3
[pid 12017] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12017] exit_group(0)               = ?
[pid 12017] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12017, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12018
./strace-static-x86_64: Process 12018 attached
[pid 12018] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12018] setpgid(0, 0)               = 0
[pid 12018] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12018] write(3, "1000", 4)         = 4
[pid 12018] close(3)                    = 0
[pid 12018] memfd_create("syzkaller", 0) = 3
[pid 12018] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12018] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12018] munmap(0x7fd990e3c000, 32768) = 0
[pid 12018] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12018] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12018] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12018] close(4)                    = 0
[pid 12018] close(3)                    = 0
[pid 12018] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12018] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12018] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12018] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12018] open("./bus", O_RDONLY)     = 3
[pid 12018] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12018] exit_group(0)               = ?
[pid 12018] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12018, 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=0x55555567f5d0) = 12019
./strace-static-x86_64: Process 12019 attached
[pid 12019] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12019] setpgid(0, 0)               = 0
[pid 12019] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12019] write(3, "1000", 4)         = 4
[pid 12019] close(3)                    = 0
[pid 12019] memfd_create("syzkaller", 0) = 3
[pid 12019] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12019] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12019] munmap(0x7fd990e3c000, 32768) = 0
[pid 12019] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12019] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12019] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12019] close(4)                    = 0
[pid 12019] close(3)                    = 0
[pid 12019] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12019] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12019] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12019] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12019] open("./bus", O_RDONLY)     = 3
[pid 12019] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12019] exit_group(0)               = ?
[pid 12019] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12019, 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=0x55555567f5d0) = 12020
./strace-static-x86_64: Process 12020 attached
[pid 12020] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12020] setpgid(0, 0)               = 0
[pid 12020] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12020] write(3, "1000", 4)         = 4
[pid 12020] close(3)                    = 0
[pid 12020] memfd_create("syzkaller", 0) = 3
[pid 12020] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12020] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12020] munmap(0x7fd990e3c000, 32768) = 0
[pid 12020] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12020] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12020] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12020] close(4)                    = 0
[pid 12020] close(3)                    = 0
[pid 12020] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12020] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12020] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12020] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12020] open("./bus", O_RDONLY)     = 3
[pid 12020] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12020] exit_group(0)               = ?
[pid 12020] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12020, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12021 attached
, child_tidptr=0x55555567f5d0) = 12021
[pid 12021] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12021] setpgid(0, 0)               = 0
[pid 12021] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12021] write(3, "1000", 4)         = 4
[pid 12021] close(3)                    = 0
[pid 12021] memfd_create("syzkaller", 0) = 3
[pid 12021] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12021] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12021] munmap(0x7fd990e3c000, 32768) = 0
[pid 12021] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12021] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12021] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12021] close(4)                    = 0
[pid 12021] close(3)                    = 0
[pid 12021] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12021] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12021] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12021] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12021] open("./bus", O_RDONLY)     = 3
[pid 12021] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12021] exit_group(0)               = ?
[pid 12021] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12021, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12022 attached
, child_tidptr=0x55555567f5d0) = 12022
[pid 12022] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12022] setpgid(0, 0)               = 0
[pid 12022] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12022] write(3, "1000", 4)         = 4
[pid 12022] close(3)                    = 0
[pid 12022] memfd_create("syzkaller", 0) = 3
[pid 12022] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12022] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12022] munmap(0x7fd990e3c000, 32768) = 0
[pid 12022] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12022] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12022] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12022] close(4)                    = 0
[pid 12022] close(3)                    = 0
[pid 12022] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12022] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12022] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12022] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12022] open("./bus", O_RDONLY)     = 3
[pid 12022] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12022] exit_group(0)               = ?
[pid 12022] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12022, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12023
./strace-static-x86_64: Process 12023 attached
[pid 12023] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12023] setpgid(0, 0)               = 0
[pid 12023] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12023] write(3, "1000", 4)         = 4
[pid 12023] close(3)                    = 0
[pid 12023] memfd_create("syzkaller", 0) = 3
[pid 12023] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12023] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12023] munmap(0x7fd990e3c000, 32768) = 0
[pid 12023] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12023] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12023] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12023] close(4)                    = 0
[pid 12023] close(3)                    = 0
[pid 12023] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12023] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12023] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12023] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12023] open("./bus", O_RDONLY)     = 3
[pid 12023] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12023] exit_group(0)               = ?
[pid 12023] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12023, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12024
./strace-static-x86_64: Process 12024 attached
[pid 12024] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12024] setpgid(0, 0)               = 0
[pid 12024] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12024] write(3, "1000", 4)         = 4
[pid 12024] close(3)                    = 0
[pid 12024] memfd_create("syzkaller", 0) = 3
[pid 12024] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12024] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12024] munmap(0x7fd990e3c000, 32768) = 0
[pid 12024] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12024] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12024] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12024] close(4)                    = 0
[pid 12024] close(3)                    = 0
[pid 12024] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12024] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12024] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12024] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12024] open("./bus", O_RDONLY)     = 3
[pid 12024] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12024] exit_group(0)               = ?
[pid 12024] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12024, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12025
./strace-static-x86_64: Process 12025 attached
[pid 12025] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12025] setpgid(0, 0)               = 0
[pid 12025] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12025] write(3, "1000", 4)         = 4
[pid 12025] close(3)                    = 0
[pid 12025] memfd_create("syzkaller", 0) = 3
[pid 12025] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12025] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12025] munmap(0x7fd990e3c000, 32768) = 0
[pid 12025] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12025] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12025] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12025] close(4)                    = 0
[pid 12025] close(3)                    = 0
[pid 12025] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12025] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12025] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12025] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12025] open("./bus", O_RDONLY)     = 3
[pid 12025] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12025] exit_group(0)               = ?
[pid 12025] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12025, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12026 attached
, child_tidptr=0x55555567f5d0) = 12026
[pid 12026] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12026] setpgid(0, 0)               = 0
[pid 12026] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12026] write(3, "1000", 4)         = 4
[pid 12026] close(3)                    = 0
[pid 12026] memfd_create("syzkaller", 0) = 3
[pid 12026] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12026] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12026] munmap(0x7fd990e3c000, 32768) = 0
[pid 12026] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12026] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12026] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12026] close(4)                    = 0
[pid 12026] close(3)                    = 0
[pid 12026] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12026] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12026] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12026] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12026] open("./bus", O_RDONLY)     = 3
[pid 12026] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12026] exit_group(0)               = ?
[pid 12026] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12026, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12027
./strace-static-x86_64: Process 12027 attached
[pid 12027] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12027] setpgid(0, 0)               = 0
[pid 12027] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12027] write(3, "1000", 4)         = 4
[pid 12027] close(3)                    = 0
[pid 12027] memfd_create("syzkaller", 0) = 3
[pid 12027] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12027] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12027] munmap(0x7fd990e3c000, 32768) = 0
[pid 12027] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12027] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12027] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12027] close(4)                    = 0
[pid 12027] close(3)                    = 0
[pid 12027] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12027] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12027] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12027] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12027] open("./bus", O_RDONLY)     = 3
[pid 12027] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12027] exit_group(0)               = ?
[pid 12027] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12027, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12028
./strace-static-x86_64: Process 12028 attached
[pid 12028] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12028] setpgid(0, 0)               = 0
[pid 12028] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12028] write(3, "1000", 4)         = 4
[pid 12028] close(3)                    = 0
[pid 12028] memfd_create("syzkaller", 0) = 3
[pid 12028] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12028] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12028] munmap(0x7fd990e3c000, 32768) = 0
[pid 12028] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12028] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12028] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12028] close(4)                    = 0
[pid 12028] close(3)                    = 0
[pid 12028] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12028] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12028] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12028] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12028] open("./bus", O_RDONLY)     = 3
[pid 12028] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12028] exit_group(0)               = ?
[pid 12028] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12028, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12029
./strace-static-x86_64: Process 12029 attached
[pid 12029] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12029] setpgid(0, 0)               = 0
[pid 12029] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12029] write(3, "1000", 4)         = 4
[pid 12029] close(3)                    = 0
[pid 12029] memfd_create("syzkaller", 0) = 3
[pid 12029] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12029] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12029] munmap(0x7fd990e3c000, 32768) = 0
[pid 12029] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12029] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12029] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12029] close(4)                    = 0
[pid 12029] close(3)                    = 0
[pid 12029] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12029] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12029] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12029] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12029] open("./bus", O_RDONLY)     = 3
[pid 12029] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12029] exit_group(0)               = ?
[pid 12029] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12029, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12030
./strace-static-x86_64: Process 12030 attached
[pid 12030] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12030] setpgid(0, 0)               = 0
[pid 12030] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12030] write(3, "1000", 4)         = 4
[pid 12030] close(3)                    = 0
[pid 12030] memfd_create("syzkaller", 0) = 3
[pid 12030] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12030] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12030] munmap(0x7fd990e3c000, 32768) = 0
[pid 12030] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12030] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12030] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12030] close(4)                    = 0
[pid 12030] close(3)                    = 0
[pid 12030] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12030] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12030] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12030] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12030] open("./bus", O_RDONLY)     = 3
[pid 12030] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12030] exit_group(0)               = ?
[pid 12030] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12030, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12031
./strace-static-x86_64: Process 12031 attached
[pid 12031] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12031] setpgid(0, 0)               = 0
[pid 12031] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12031] write(3, "1000", 4)         = 4
[pid 12031] close(3)                    = 0
[pid 12031] memfd_create("syzkaller", 0) = 3
[pid 12031] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12031] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12031] munmap(0x7fd990e3c000, 32768) = 0
[pid 12031] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12031] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12031] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12031] close(4)                    = 0
[pid 12031] close(3)                    = 0
[pid 12031] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12031] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12031] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12031] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12031] open("./bus", O_RDONLY)     = 3
[pid 12031] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12031] exit_group(0)               = ?
[pid 12031] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12031, 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 12032 attached
, child_tidptr=0x55555567f5d0) = 12032
[pid 12032] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12032] setpgid(0, 0)               = 0
[pid 12032] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12032] write(3, "1000", 4)         = 4
[pid 12032] close(3)                    = 0
[pid 12032] memfd_create("syzkaller", 0) = 3
[pid 12032] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12032] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12032] munmap(0x7fd990e3c000, 32768) = 0
[pid 12032] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12032] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12032] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12032] close(4)                    = 0
[pid 12032] close(3)                    = 0
[pid 12032] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12032] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12032] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12032] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12032] open("./bus", O_RDONLY)     = 3
[pid 12032] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12032] exit_group(0)               = ?
[pid 12032] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12032, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12033
./strace-static-x86_64: Process 12033 attached
[pid 12033] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12033] setpgid(0, 0)               = 0
[pid 12033] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12033] write(3, "1000", 4)         = 4
[pid 12033] close(3)                    = 0
[pid 12033] memfd_create("syzkaller", 0) = 3
[pid 12033] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12033] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12033] munmap(0x7fd990e3c000, 32768) = 0
[pid 12033] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12033] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12033] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12033] close(4)                    = 0
[pid 12033] close(3)                    = 0
[pid 12033] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12033] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12033] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12033] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12033] open("./bus", O_RDONLY)     = 3
[pid 12033] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12033] exit_group(0)               = ?
[pid 12033] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12033, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12034
./strace-static-x86_64: Process 12034 attached
[pid 12034] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12034] setpgid(0, 0)               = 0
[pid 12034] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12034] write(3, "1000", 4)         = 4
[pid 12034] close(3)                    = 0
[pid 12034] memfd_create("syzkaller", 0) = 3
[pid 12034] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12034] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12034] munmap(0x7fd990e3c000, 32768) = 0
[pid 12034] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12034] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12034] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12034] close(4)                    = 0
[pid 12034] close(3)                    = 0
[pid 12034] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12034] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12034] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12034] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12034] open("./bus", O_RDONLY)     = 3
[pid 12034] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12034] exit_group(0)               = ?
[pid 12034] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12034, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12035 attached
 <unfinished ...>
[pid 12035] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 12035
[pid 12035] <... prctl resumed>)        = 0
[pid 12035] setpgid(0, 0)               = 0
[pid 12035] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12035] write(3, "1000", 4)         = 4
[pid 12035] close(3)                    = 0
[pid 12035] memfd_create("syzkaller", 0) = 3
[pid 12035] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12035] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12035] munmap(0x7fd990e3c000, 32768) = 0
[pid 12035] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12035] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12035] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12035] close(4)                    = 0
[pid 12035] close(3)                    = 0
[pid 12035] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12035] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12035] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12035] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12035] open("./bus", O_RDONLY)     = 3
[pid 12035] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12035] exit_group(0)               = ?
[pid 12035] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12035, 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=0x55555567f5d0) = 12036
./strace-static-x86_64: Process 12036 attached
[pid 12036] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12036] setpgid(0, 0)               = 0
[pid 12036] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12036] write(3, "1000", 4)         = 4
[pid 12036] close(3)                    = 0
[pid 12036] memfd_create("syzkaller", 0) = 3
[pid 12036] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12036] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12036] munmap(0x7fd990e3c000, 32768) = 0
[pid 12036] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12036] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12036] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12036] close(4)                    = 0
[pid 12036] close(3)                    = 0
[pid 12036] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12036] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12036] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12036] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12036] open("./bus", O_RDONLY)     = 3
[pid 12036] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12036] exit_group(0)               = ?
[pid 12036] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12036, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12037 attached
, child_tidptr=0x55555567f5d0) = 12037
[pid 12037] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12037] setpgid(0, 0)               = 0
[pid 12037] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12037] write(3, "1000", 4)         = 4
[pid 12037] close(3)                    = 0
[pid 12037] memfd_create("syzkaller", 0) = 3
[pid 12037] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12037] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12037] munmap(0x7fd990e3c000, 32768) = 0
[pid 12037] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12037] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12037] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12037] close(4)                    = 0
[pid 12037] close(3)                    = 0
[pid 12037] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12037] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12037] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12037] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12037] open("./bus", O_RDONLY)     = 3
[pid 12037] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12037] exit_group(0)               = ?
[pid 12037] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12037, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12038 attached
, child_tidptr=0x55555567f5d0) = 12038
[pid 12038] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12038] setpgid(0, 0)               = 0
[pid 12038] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12038] write(3, "1000", 4)         = 4
[pid 12038] close(3)                    = 0
[pid 12038] memfd_create("syzkaller", 0) = 3
[pid 12038] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12038] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12038] munmap(0x7fd990e3c000, 32768) = 0
[pid 12038] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12038] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12038] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12038] close(4)                    = 0
[pid 12038] close(3)                    = 0
[pid 12038] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12038] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12038] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12038] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12038] open("./bus", O_RDONLY)     = 3
[pid 12038] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12038] exit_group(0)               = ?
[pid 12038] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12038, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12039 attached
, child_tidptr=0x55555567f5d0) = 12039
[pid 12039] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12039] setpgid(0, 0)               = 0
[pid 12039] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12039] write(3, "1000", 4)         = 4
[pid 12039] close(3)                    = 0
[pid 12039] memfd_create("syzkaller", 0) = 3
[pid 12039] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12039] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12039] munmap(0x7fd990e3c000, 32768) = 0
[pid 12039] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12039] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12039] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12039] close(4)                    = 0
[pid 12039] close(3)                    = 0
[pid 12039] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12039] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12039] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12039] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12039] open("./bus", O_RDONLY)     = 3
[pid 12039] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12039] exit_group(0)               = ?
[pid 12039] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12039, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12040
./strace-static-x86_64: Process 12040 attached
[pid 12040] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12040] setpgid(0, 0)               = 0
[pid 12040] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12040] write(3, "1000", 4)         = 4
[pid 12040] close(3)                    = 0
[pid 12040] memfd_create("syzkaller", 0) = 3
[pid 12040] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12040] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12040] munmap(0x7fd990e3c000, 32768) = 0
[pid 12040] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12040] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12040] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12040] close(4)                    = 0
[pid 12040] close(3)                    = 0
[pid 12040] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12040] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12040] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12040] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12040] open("./bus", O_RDONLY)     = 3
[pid 12040] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12040] exit_group(0)               = ?
[pid 12040] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12040, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12041
./strace-static-x86_64: Process 12041 attached
[pid 12041] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12041] setpgid(0, 0)               = 0
[pid 12041] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12041] write(3, "1000", 4)         = 4
[pid 12041] close(3)                    = 0
[pid 12041] memfd_create("syzkaller", 0) = 3
[pid 12041] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12041] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12041] munmap(0x7fd990e3c000, 32768) = 0
[pid 12041] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12041] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12041] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12041] close(4)                    = 0
[pid 12041] close(3)                    = 0
[pid 12041] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12041] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12041] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12041] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12041] open("./bus", O_RDONLY)     = 3
[pid 12041] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12041] exit_group(0)               = ?
[pid 12041] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12041, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12042
./strace-static-x86_64: Process 12042 attached
[pid 12042] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12042] setpgid(0, 0)               = 0
[pid 12042] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12042] write(3, "1000", 4)         = 4
[pid 12042] close(3)                    = 0
[pid 12042] memfd_create("syzkaller", 0) = 3
[pid 12042] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12042] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12042] munmap(0x7fd990e3c000, 32768) = 0
[pid 12042] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12042] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12042] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12042] close(4)                    = 0
[pid 12042] close(3)                    = 0
[pid 12042] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12042] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12042] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12042] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12042] open("./bus", O_RDONLY)     = 3
[pid 12042] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12042] exit_group(0)               = ?
[pid 12042] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12042, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12043 attached
, child_tidptr=0x55555567f5d0) = 12043
[pid 12043] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12043] setpgid(0, 0)               = 0
[pid 12043] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12043] write(3, "1000", 4)         = 4
[pid 12043] close(3)                    = 0
[pid 12043] memfd_create("syzkaller", 0) = 3
[pid 12043] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12043] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12043] munmap(0x7fd990e3c000, 32768) = 0
[pid 12043] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12043] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12043] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12043] close(4)                    = 0
[pid 12043] close(3)                    = 0
[pid 12043] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12043] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12043] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12043] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12043] open("./bus", O_RDONLY)     = 3
[pid 12043] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12043] exit_group(0)               = ?
[pid 12043] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12043, 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 12044 attached
, child_tidptr=0x55555567f5d0) = 12044
[pid 12044] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12044] setpgid(0, 0)               = 0
[pid 12044] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12044] write(3, "1000", 4)         = 4
[pid 12044] close(3)                    = 0
[pid 12044] memfd_create("syzkaller", 0) = 3
[pid 12044] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12044] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12044] munmap(0x7fd990e3c000, 32768) = 0
[pid 12044] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12044] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12044] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12044] close(4)                    = 0
[pid 12044] close(3)                    = 0
[pid 12044] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12044] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12044] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12044] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12044] open("./bus", O_RDONLY)     = 3
[pid 12044] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12044] exit_group(0)               = ?
[pid 12044] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12044, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12045 attached
, child_tidptr=0x55555567f5d0) = 12045
[pid 12045] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12045] setpgid(0, 0)               = 0
[pid 12045] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12045] write(3, "1000", 4)         = 4
[pid 12045] close(3)                    = 0
[pid 12045] memfd_create("syzkaller", 0) = 3
[pid 12045] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12045] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12045] munmap(0x7fd990e3c000, 32768) = 0
[pid 12045] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12045] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12045] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12045] close(4)                    = 0
[pid 12045] close(3)                    = 0
[pid 12045] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12045] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12045] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12045] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12045] open("./bus", O_RDONLY)     = 3
[pid 12045] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12045] exit_group(0)               = ?
[pid 12045] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12045, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12046
./strace-static-x86_64: Process 12046 attached
[pid 12046] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12046] setpgid(0, 0)               = 0
[pid 12046] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12046] write(3, "1000", 4)         = 4
[pid 12046] close(3)                    = 0
[pid 12046] memfd_create("syzkaller", 0) = 3
[pid 12046] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12046] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12046] munmap(0x7fd990e3c000, 32768) = 0
[pid 12046] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12046] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12046] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12046] close(4)                    = 0
[pid 12046] close(3)                    = 0
[pid 12046] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12046] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12046] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12046] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12046] open("./bus", O_RDONLY)     = 3
[pid 12046] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12046] exit_group(0)               = ?
[pid 12046] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12046, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12047
./strace-static-x86_64: Process 12047 attached
[pid 12047] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12047] setpgid(0, 0)               = 0
[pid 12047] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12047] write(3, "1000", 4)         = 4
[pid 12047] close(3)                    = 0
[pid 12047] memfd_create("syzkaller", 0) = 3
[pid 12047] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12047] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12047] munmap(0x7fd990e3c000, 32768) = 0
[pid 12047] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12047] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12047] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12047] close(4)                    = 0
[pid 12047] close(3)                    = 0
[pid 12047] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12047] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12047] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12047] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12047] open("./bus", O_RDONLY)     = 3
[pid 12047] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12047] exit_group(0)               = ?
[pid 12047] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12047, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12048 attached
, child_tidptr=0x55555567f5d0) = 12048
[pid 12048] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12048] setpgid(0, 0)               = 0
[pid 12048] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12048] write(3, "1000", 4)         = 4
[pid 12048] close(3)                    = 0
[pid 12048] memfd_create("syzkaller", 0) = 3
[pid 12048] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12048] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12048] munmap(0x7fd990e3c000, 32768) = 0
[pid 12048] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12048] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12048] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12048] close(4)                    = 0
[pid 12048] close(3)                    = 0
[pid 12048] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12048] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12048] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12048] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12048] open("./bus", O_RDONLY)     = 3
[pid 12048] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12048] exit_group(0)               = ?
[pid 12048] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12048, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12049
./strace-static-x86_64: Process 12049 attached
[pid 12049] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12049] setpgid(0, 0)               = 0
[pid 12049] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12049] write(3, "1000", 4)         = 4
[pid 12049] close(3)                    = 0
[pid 12049] memfd_create("syzkaller", 0) = 3
[pid 12049] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12049] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12049] munmap(0x7fd990e3c000, 32768) = 0
[pid 12049] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12049] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12049] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12049] close(4)                    = 0
[pid 12049] close(3)                    = 0
[pid 12049] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12049] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12049] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12049] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12049] open("./bus", O_RDONLY)     = 3
[pid 12049] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12049] exit_group(0)               = ?
[pid 12049] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12049, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12050 attached
, child_tidptr=0x55555567f5d0) = 12050
[pid 12050] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12050] setpgid(0, 0)               = 0
[pid 12050] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12050] write(3, "1000", 4)         = 4
[pid 12050] close(3)                    = 0
[pid 12050] memfd_create("syzkaller", 0) = 3
[pid 12050] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12050] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12050] munmap(0x7fd990e3c000, 32768) = 0
[pid 12050] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12050] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12050] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12050] close(4)                    = 0
[pid 12050] close(3)                    = 0
[pid 12050] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12050] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12050] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12050] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12050] open("./bus", O_RDONLY)     = 3
[pid 12050] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12050] exit_group(0)               = ?
[pid 12050] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12050, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12051
./strace-static-x86_64: Process 12051 attached
[pid 12051] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12051] setpgid(0, 0)               = 0
[pid 12051] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12051] write(3, "1000", 4)         = 4
[pid 12051] close(3)                    = 0
[pid 12051] memfd_create("syzkaller", 0) = 3
[pid 12051] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12051] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12051] munmap(0x7fd990e3c000, 32768) = 0
[pid 12051] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12051] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12051] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12051] close(4)                    = 0
[pid 12051] close(3)                    = 0
[pid 12051] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12051] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12051] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12051] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12051] open("./bus", O_RDONLY)     = 3
[pid 12051] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12051] exit_group(0)               = ?
[pid 12051] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12051, 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=0x55555567f5d0) = 12052
./strace-static-x86_64: Process 12052 attached
[pid 12052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12052] setpgid(0, 0)               = 0
[pid 12052] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12052] write(3, "1000", 4)         = 4
[pid 12052] close(3)                    = 0
[pid 12052] memfd_create("syzkaller", 0) = 3
[pid 12052] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12052] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12052] munmap(0x7fd990e3c000, 32768) = 0
[pid 12052] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12052] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12052] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12052] close(4)                    = 0
[pid 12052] close(3)                    = 0
[pid 12052] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12052] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12052] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12052] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12052] open("./bus", O_RDONLY)     = 3
[pid 12052] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12052] exit_group(0)               = ?
[pid 12052] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12052, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12053
./strace-static-x86_64: Process 12053 attached
[pid 12053] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12053] setpgid(0, 0)               = 0
[pid 12053] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12053] write(3, "1000", 4)         = 4
[pid 12053] close(3)                    = 0
[pid 12053] memfd_create("syzkaller", 0) = 3
[pid 12053] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12053] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12053] munmap(0x7fd990e3c000, 32768) = 0
[pid 12053] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12053] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12053] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12053] close(4)                    = 0
[pid 12053] close(3)                    = 0
[pid 12053] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12053] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12053] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12053] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12053] open("./bus", O_RDONLY)     = 3
[pid 12053] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12053] exit_group(0)               = ?
[pid 12053] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12053, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12054
./strace-static-x86_64: Process 12054 attached
[pid 12054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12054] setpgid(0, 0)               = 0
[pid 12054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12054] write(3, "1000", 4)         = 4
[pid 12054] close(3)                    = 0
[pid 12054] memfd_create("syzkaller", 0) = 3
[pid 12054] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12054] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12054] munmap(0x7fd990e3c000, 32768) = 0
[pid 12054] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12054] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12054] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12054] close(4)                    = 0
[pid 12054] close(3)                    = 0
[pid 12054] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12054] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12054] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12054] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12054] open("./bus", O_RDONLY)     = 3
[pid 12054] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12054] exit_group(0)               = ?
[pid 12054] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12054, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12055
./strace-static-x86_64: Process 12055 attached
[pid 12055] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12055] setpgid(0, 0)               = 0
[pid 12055] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12055] write(3, "1000", 4)         = 4
[pid 12055] close(3)                    = 0
[pid 12055] memfd_create("syzkaller", 0) = 3
[pid 12055] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12055] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12055] munmap(0x7fd990e3c000, 32768) = 0
[pid 12055] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12055] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12055] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12055] close(4)                    = 0
[pid 12055] close(3)                    = 0
[pid 12055] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12055] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12055] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12055] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12055] open("./bus", O_RDONLY)     = 3
[pid 12055] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12055] exit_group(0)               = ?
[pid 12055] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12055, 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=0x55555567f5d0) = 12056
./strace-static-x86_64: Process 12056 attached
[pid 12056] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12056] setpgid(0, 0)               = 0
[pid 12056] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12056] write(3, "1000", 4)         = 4
[pid 12056] close(3)                    = 0
[pid 12056] memfd_create("syzkaller", 0) = 3
[pid 12056] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12056] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12056] munmap(0x7fd990e3c000, 32768) = 0
[pid 12056] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12056] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12056] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12056] close(4)                    = 0
[pid 12056] close(3)                    = 0
[pid 12056] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12056] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12056] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12056] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12056] open("./bus", O_RDONLY)     = 3
[pid 12056] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12056] exit_group(0)               = ?
[pid 12056] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12056, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12057
./strace-static-x86_64: Process 12057 attached
[pid 12057] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12057] setpgid(0, 0)               = 0
[pid 12057] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12057] write(3, "1000", 4)         = 4
[pid 12057] close(3)                    = 0
[pid 12057] memfd_create("syzkaller", 0) = 3
[pid 12057] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12057] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12057] munmap(0x7fd990e3c000, 32768) = 0
[pid 12057] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12057] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12057] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12057] close(4)                    = 0
[pid 12057] close(3)                    = 0
[pid 12057] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12057] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12057] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12057] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12057] open("./bus", O_RDONLY)     = 3
[pid 12057] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12057] exit_group(0)               = ?
[pid 12057] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12057, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12058
./strace-static-x86_64: Process 12058 attached
[pid 12058] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12058] setpgid(0, 0)               = 0
[pid 12058] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12058] write(3, "1000", 4)         = 4
[pid 12058] close(3)                    = 0
[pid 12058] memfd_create("syzkaller", 0) = 3
[pid 12058] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12058] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12058] munmap(0x7fd990e3c000, 32768) = 0
[pid 12058] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12058] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12058] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12058] close(4)                    = 0
[pid 12058] close(3)                    = 0
[pid 12058] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12058] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12058] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12058] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12058] open("./bus", O_RDONLY)     = 3
[pid 12058] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12058] exit_group(0)               = ?
[pid 12058] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12058, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12059
./strace-static-x86_64: Process 12059 attached
[pid 12059] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12059] setpgid(0, 0)               = 0
[pid 12059] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12059] write(3, "1000", 4)         = 4
[pid 12059] close(3)                    = 0
[pid 12059] memfd_create("syzkaller", 0) = 3
[pid 12059] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12059] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12059] munmap(0x7fd990e3c000, 32768) = 0
[pid 12059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12059] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12059] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12059] close(4)                    = 0
[pid 12059] close(3)                    = 0
[pid 12059] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12059] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12059] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12059] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12059] open("./bus", O_RDONLY)     = 3
[pid 12059] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12059] exit_group(0)               = ?
[pid 12059] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12059, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12060
./strace-static-x86_64: Process 12060 attached
[pid 12060] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12060] setpgid(0, 0)               = 0
[pid 12060] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12060] write(3, "1000", 4)         = 4
[pid 12060] close(3)                    = 0
[pid 12060] memfd_create("syzkaller", 0) = 3
[pid 12060] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12060] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12060] munmap(0x7fd990e3c000, 32768) = 0
[pid 12060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12060] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12060] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12060] close(4)                    = 0
[pid 12060] close(3)                    = 0
[pid 12060] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12060] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12060] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12060] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12060] open("./bus", O_RDONLY)     = 3
[pid 12060] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12060] exit_group(0)               = ?
[pid 12060] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12060, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12061
./strace-static-x86_64: Process 12061 attached
[pid 12061] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12061] setpgid(0, 0)               = 0
[pid 12061] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12061] write(3, "1000", 4)         = 4
[pid 12061] close(3)                    = 0
[pid 12061] memfd_create("syzkaller", 0) = 3
[pid 12061] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12061] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12061] munmap(0x7fd990e3c000, 32768) = 0
[pid 12061] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12061] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12061] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12061] close(4)                    = 0
[pid 12061] close(3)                    = 0
[pid 12061] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12061] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12061] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12061] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12061] open("./bus", O_RDONLY)     = 3
[pid 12061] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12061] exit_group(0)               = ?
[pid 12061] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12061, 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=0x55555567f5d0) = 12062
./strace-static-x86_64: Process 12062 attached
[pid 12062] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12062] setpgid(0, 0)               = 0
[pid 12062] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12062] write(3, "1000", 4)         = 4
[pid 12062] close(3)                    = 0
[pid 12062] memfd_create("syzkaller", 0) = 3
[pid 12062] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12062] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12062] munmap(0x7fd990e3c000, 32768) = 0
[pid 12062] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12062] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12062] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12062] close(4)                    = 0
[pid 12062] close(3)                    = 0
[pid 12062] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12062] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12062] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12062] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12062] open("./bus", O_RDONLY)     = 3
[pid 12062] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12062] exit_group(0)               = ?
[pid 12062] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12062, 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=0x55555567f5d0) = 12063
./strace-static-x86_64: Process 12063 attached
[pid 12063] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12063] setpgid(0, 0)               = 0
[pid 12063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12063] write(3, "1000", 4)         = 4
[pid 12063] close(3)                    = 0
[pid 12063] memfd_create("syzkaller", 0) = 3
[pid 12063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12063] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12063] munmap(0x7fd990e3c000, 32768) = 0
[pid 12063] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12063] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12063] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12063] close(4)                    = 0
[pid 12063] close(3)                    = 0
[pid 12063] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12063] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12063] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12063] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12063] open("./bus", O_RDONLY)     = 3
[pid 12063] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12063] exit_group(0)               = ?
[pid 12063] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12063, 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=0x55555567f5d0) = 12064
./strace-static-x86_64: Process 12064 attached
[pid 12064] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12064] setpgid(0, 0)               = 0
[pid 12064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12064] write(3, "1000", 4)         = 4
[pid 12064] close(3)                    = 0
[pid 12064] memfd_create("syzkaller", 0) = 3
[pid 12064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12064] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12064] munmap(0x7fd990e3c000, 32768) = 0
[pid 12064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12064] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12064] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12064] close(4)                    = 0
[pid 12064] close(3)                    = 0
[pid 12064] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12064] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12064] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12064] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12064] open("./bus", O_RDONLY)     = 3
[pid 12064] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12064] exit_group(0)               = ?
[pid 12064] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12064, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12065
./strace-static-x86_64: Process 12065 attached
[pid 12065] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12065] setpgid(0, 0)               = 0
[pid 12065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12065] write(3, "1000", 4)         = 4
[pid 12065] close(3)                    = 0
[pid 12065] memfd_create("syzkaller", 0) = 3
[pid 12065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12065] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12065] munmap(0x7fd990e3c000, 32768) = 0
[pid 12065] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12065] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12065] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12065] close(4)                    = 0
[pid 12065] close(3)                    = 0
[pid 12065] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12065] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12065] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12065] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12065] open("./bus", O_RDONLY)     = 3
[pid 12065] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12065] exit_group(0)               = ?
[pid 12065] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12065, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12066
./strace-static-x86_64: Process 12066 attached
[pid 12066] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12066] setpgid(0, 0)               = 0
[pid 12066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12066] write(3, "1000", 4)         = 4
[pid 12066] close(3)                    = 0
[pid 12066] memfd_create("syzkaller", 0) = 3
[pid 12066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12066] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12066] munmap(0x7fd990e3c000, 32768) = 0
[pid 12066] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12066] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12066] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12066] close(4)                    = 0
[pid 12066] close(3)                    = 0
[pid 12066] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12066] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12066] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12066] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12066] open("./bus", O_RDONLY)     = 3
[pid 12066] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12066] exit_group(0)               = ?
[pid 12066] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12066, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12067
./strace-static-x86_64: Process 12067 attached
[pid 12067] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12067] setpgid(0, 0)               = 0
[pid 12067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12067] write(3, "1000", 4)         = 4
[pid 12067] close(3)                    = 0
[pid 12067] memfd_create("syzkaller", 0) = 3
[pid 12067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12067] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12067] munmap(0x7fd990e3c000, 32768) = 0
[pid 12067] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12067] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12067] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12067] close(4)                    = 0
[pid 12067] close(3)                    = 0
[pid 12067] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12067] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12067] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12067] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12067] open("./bus", O_RDONLY)     = 3
[pid 12067] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12067] exit_group(0)               = ?
[pid 12067] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12067, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12068
./strace-static-x86_64: Process 12068 attached
[pid 12068] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12068] setpgid(0, 0)               = 0
[pid 12068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12068] write(3, "1000", 4)         = 4
[pid 12068] close(3)                    = 0
[pid 12068] memfd_create("syzkaller", 0) = 3
[pid 12068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12068] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12068] munmap(0x7fd990e3c000, 32768) = 0
[pid 12068] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12068] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12068] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12068] close(4)                    = 0
[pid 12068] close(3)                    = 0
[pid 12068] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12068] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12068] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12068] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12068] open("./bus", O_RDONLY)     = 3
[pid 12068] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12068] exit_group(0)               = ?
[pid 12068] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12068, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12069
./strace-static-x86_64: Process 12069 attached
[pid 12069] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12069] setpgid(0, 0)               = 0
[pid 12069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12069] write(3, "1000", 4)         = 4
[pid 12069] close(3)                    = 0
[pid 12069] memfd_create("syzkaller", 0) = 3
[pid 12069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12069] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12069] munmap(0x7fd990e3c000, 32768) = 0
[pid 12069] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12069] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12069] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12069] close(4)                    = 0
[pid 12069] close(3)                    = 0
[pid 12069] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12069] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12069] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12069] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12069] open("./bus", O_RDONLY)     = 3
[pid 12069] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12069] exit_group(0)               = ?
[pid 12069] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12069, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12070
./strace-static-x86_64: Process 12070 attached
[pid 12070] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12070] setpgid(0, 0)               = 0
[pid 12070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12070] write(3, "1000", 4)         = 4
[pid 12070] close(3)                    = 0
[pid 12070] memfd_create("syzkaller", 0) = 3
[pid 12070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12070] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12070] munmap(0x7fd990e3c000, 32768) = 0
[pid 12070] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12070] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12070] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12070] close(4)                    = 0
[pid 12070] close(3)                    = 0
[pid 12070] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12070] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12070] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12070] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12070] open("./bus", O_RDONLY)     = 3
[pid 12070] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12070] exit_group(0)               = ?
[pid 12070] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12070, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12071
./strace-static-x86_64: Process 12071 attached
[pid 12071] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12071] setpgid(0, 0)               = 0
[pid 12071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12071] write(3, "1000", 4)         = 4
[pid 12071] close(3)                    = 0
[pid 12071] memfd_create("syzkaller", 0) = 3
[pid 12071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12071] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12071] munmap(0x7fd990e3c000, 32768) = 0
[pid 12071] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12071] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12071] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12071] close(4)                    = 0
[pid 12071] close(3)                    = 0
[pid 12071] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12071] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12071] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12071] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12071] open("./bus", O_RDONLY)     = 3
[pid 12071] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12071] exit_group(0)               = ?
[pid 12071] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12071, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12072
./strace-static-x86_64: Process 12072 attached
[pid 12072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12072] setpgid(0, 0)               = 0
[pid 12072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12072] write(3, "1000", 4)         = 4
[pid 12072] close(3)                    = 0
[pid 12072] memfd_create("syzkaller", 0) = 3
[pid 12072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12072] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12072] munmap(0x7fd990e3c000, 32768) = 0
[pid 12072] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12072] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12072] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12072] close(4)                    = 0
[pid 12072] close(3)                    = 0
[pid 12072] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12072] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12072] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12072] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12072] open("./bus", O_RDONLY)     = 3
[pid 12072] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12072] exit_group(0)               = ?
[pid 12072] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12072, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12073
./strace-static-x86_64: Process 12073 attached
[pid 12073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12073] setpgid(0, 0)               = 0
[pid 12073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12073] write(3, "1000", 4)         = 4
[pid 12073] close(3)                    = 0
[pid 12073] memfd_create("syzkaller", 0) = 3
[pid 12073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12073] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12073] munmap(0x7fd990e3c000, 32768) = 0
[pid 12073] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12073] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12073] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12073] close(4)                    = 0
[pid 12073] close(3)                    = 0
[pid 12073] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12073] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12073] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12073] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12073] open("./bus", O_RDONLY)     = 3
[pid 12073] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12073] exit_group(0)               = ?
[pid 12073] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12073, 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=0x55555567f5d0) = 12074
./strace-static-x86_64: Process 12074 attached
[pid 12074] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12074] setpgid(0, 0)               = 0
[pid 12074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12074] write(3, "1000", 4)         = 4
[pid 12074] close(3)                    = 0
[pid 12074] memfd_create("syzkaller", 0) = 3
[pid 12074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12074] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12074] munmap(0x7fd990e3c000, 32768) = 0
[pid 12074] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12074] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12074] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12074] close(4)                    = 0
[pid 12074] close(3)                    = 0
[pid 12074] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12074] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12074] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12074] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12074] open("./bus", O_RDONLY)     = 3
[pid 12074] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12074] exit_group(0)               = ?
[pid 12074] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12074, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12075
./strace-static-x86_64: Process 12075 attached
[pid 12075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12075] setpgid(0, 0)               = 0
[pid 12075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12075] write(3, "1000", 4)         = 4
[pid 12075] close(3)                    = 0
[pid 12075] memfd_create("syzkaller", 0) = 3
[pid 12075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12075] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12075] munmap(0x7fd990e3c000, 32768) = 0
[pid 12075] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12075] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12075] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12075] close(4)                    = 0
[pid 12075] close(3)                    = 0
[pid 12075] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12075] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12075] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12075] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12075] open("./bus", O_RDONLY)     = 3
[pid 12075] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12075] exit_group(0)               = ?
[pid 12075] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12075, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12076
./strace-static-x86_64: Process 12076 attached
[pid 12076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12076] setpgid(0, 0)               = 0
[pid 12076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12076] write(3, "1000", 4)         = 4
[pid 12076] close(3)                    = 0
[pid 12076] memfd_create("syzkaller", 0) = 3
[pid 12076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12076] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12076] munmap(0x7fd990e3c000, 32768) = 0
[pid 12076] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12076] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12076] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12076] close(4)                    = 0
[pid 12076] close(3)                    = 0
[pid 12076] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12076] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12076] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12076] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12076] open("./bus", O_RDONLY)     = 3
[pid 12076] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12076] exit_group(0)               = ?
[pid 12076] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12076, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12077
./strace-static-x86_64: Process 12077 attached
[pid 12077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12077] setpgid(0, 0)               = 0
[pid 12077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12077] write(3, "1000", 4)         = 4
[pid 12077] close(3)                    = 0
[pid 12077] memfd_create("syzkaller", 0) = 3
[pid 12077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12077] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12077] munmap(0x7fd990e3c000, 32768) = 0
[pid 12077] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12077] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12077] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12077] close(4)                    = 0
[pid 12077] close(3)                    = 0
[pid 12077] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12077] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12077] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12077] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12077] open("./bus", O_RDONLY)     = 3
[pid 12077] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12077] exit_group(0)               = ?
[pid 12077] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12077, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12078
./strace-static-x86_64: Process 12078 attached
[pid 12078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12078] setpgid(0, 0)               = 0
[pid 12078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12078] write(3, "1000", 4)         = 4
[pid 12078] close(3)                    = 0
[pid 12078] memfd_create("syzkaller", 0) = 3
[pid 12078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12078] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12078] munmap(0x7fd990e3c000, 32768) = 0
[pid 12078] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12078] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12078] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12078] close(4)                    = 0
[pid 12078] close(3)                    = 0
[pid 12078] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12078] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12078] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12078] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12078] open("./bus", O_RDONLY)     = 3
[pid 12078] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12078] exit_group(0)               = ?
[pid 12078] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12078, 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=0x55555567f5d0) = 12079
./strace-static-x86_64: Process 12079 attached
[pid 12079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12079] setpgid(0, 0)               = 0
[pid 12079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12079] write(3, "1000", 4)         = 4
[pid 12079] close(3)                    = 0
[pid 12079] memfd_create("syzkaller", 0) = 3
[pid 12079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12079] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12079] munmap(0x7fd990e3c000, 32768) = 0
[pid 12079] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12079] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12079] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12079] close(4)                    = 0
[pid 12079] close(3)                    = 0
[pid 12079] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12079] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12079] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12079] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12079] open("./bus", O_RDONLY)     = 3
[pid 12079] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12079] exit_group(0)               = ?
[pid 12079] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12079, 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=0x55555567f5d0) = 12080
./strace-static-x86_64: Process 12080 attached
[pid 12080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12080] setpgid(0, 0)               = 0
[pid 12080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12080] write(3, "1000", 4)         = 4
[pid 12080] close(3)                    = 0
[pid 12080] memfd_create("syzkaller", 0) = 3
[pid 12080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12080] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12080] munmap(0x7fd990e3c000, 32768) = 0
[pid 12080] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12080] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12080] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12080] close(4)                    = 0
[pid 12080] close(3)                    = 0
[pid 12080] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12080] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12080] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12080] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12080] open("./bus", O_RDONLY)     = 3
[pid 12080] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12080] exit_group(0)               = ?
[pid 12080] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12080, 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 12081 attached
, child_tidptr=0x55555567f5d0) = 12081
[pid 12081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12081] setpgid(0, 0)               = 0
[pid 12081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12081] write(3, "1000", 4)         = 4
[pid 12081] close(3)                    = 0
[pid 12081] memfd_create("syzkaller", 0) = 3
[pid 12081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12081] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12081] munmap(0x7fd990e3c000, 32768) = 0
[pid 12081] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12081] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12081] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12081] close(4)                    = 0
[pid 12081] close(3)                    = 0
[pid 12081] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12081] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12081] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12081] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12081] open("./bus", O_RDONLY)     = 3
[pid 12081] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12081] exit_group(0)               = ?
[pid 12081] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12081, 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 12082 attached
, child_tidptr=0x55555567f5d0) = 12082
[pid 12082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12082] setpgid(0, 0)               = 0
[pid 12082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12082] write(3, "1000", 4)         = 4
[pid 12082] close(3)                    = 0
[pid 12082] memfd_create("syzkaller", 0) = 3
[pid 12082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12082] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12082] munmap(0x7fd990e3c000, 32768) = 0
[pid 12082] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12082] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12082] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12082] close(4)                    = 0
[pid 12082] close(3)                    = 0
[pid 12082] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12082] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12082] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12082] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12082] open("./bus", O_RDONLY)     = 3
[pid 12082] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12082] exit_group(0)               = ?
[pid 12082] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12082, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12083
./strace-static-x86_64: Process 12083 attached
[pid 12083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12083] setpgid(0, 0)               = 0
[pid 12083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12083] write(3, "1000", 4)         = 4
[pid 12083] close(3)                    = 0
[pid 12083] memfd_create("syzkaller", 0) = 3
[pid 12083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12083] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12083] munmap(0x7fd990e3c000, 32768) = 0
[pid 12083] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12083] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12083] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12083] close(4)                    = 0
[pid 12083] close(3)                    = 0
[pid 12083] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12083] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12083] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12083] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12083] open("./bus", O_RDONLY)     = 3
[pid 12083] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12083] exit_group(0)               = ?
[pid 12083] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12083, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12084
./strace-static-x86_64: Process 12084 attached
[pid 12084] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12084] setpgid(0, 0)               = 0
[pid 12084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12084] write(3, "1000", 4)         = 4
[pid 12084] close(3)                    = 0
[pid 12084] memfd_create("syzkaller", 0) = 3
[pid 12084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12084] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12084] munmap(0x7fd990e3c000, 32768) = 0
[pid 12084] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12084] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12084] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12084] close(4)                    = 0
[pid 12084] close(3)                    = 0
[pid 12084] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12084] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12084] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12084] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12084] open("./bus", O_RDONLY)     = 3
[pid 12084] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12084] exit_group(0)               = ?
[pid 12084] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12084, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12085
./strace-static-x86_64: Process 12085 attached
[pid 12085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12085] setpgid(0, 0)               = 0
[pid 12085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12085] write(3, "1000", 4)         = 4
[pid 12085] close(3)                    = 0
[pid 12085] memfd_create("syzkaller", 0) = 3
[pid 12085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12085] munmap(0x7fd990e3c000, 32768) = 0
[pid 12085] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12085] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12085] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12085] close(4)                    = 0
[pid 12085] close(3)                    = 0
[pid 12085] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12085] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12085] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12085] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12085] open("./bus", O_RDONLY)     = 3
[pid 12085] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12085] exit_group(0)               = ?
[pid 12085] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12085, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12086 attached
, child_tidptr=0x55555567f5d0) = 12086
[pid 12086] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12086] setpgid(0, 0)               = 0
[pid 12086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12086] write(3, "1000", 4)         = 4
[pid 12086] close(3)                    = 0
[pid 12086] memfd_create("syzkaller", 0) = 3
[pid 12086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12086] munmap(0x7fd990e3c000, 32768) = 0
[pid 12086] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12086] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12086] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12086] close(4)                    = 0
[pid 12086] close(3)                    = 0
[pid 12086] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12086] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12086] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12086] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12086] open("./bus", O_RDONLY)     = 3
[pid 12086] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12086] exit_group(0)               = ?
[pid 12086] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12086, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12087
./strace-static-x86_64: Process 12087 attached
[pid 12087] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12087] setpgid(0, 0)               = 0
[pid 12087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12087] write(3, "1000", 4)         = 4
[pid 12087] close(3)                    = 0
[pid 12087] memfd_create("syzkaller", 0) = 3
[pid 12087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12087] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12087] munmap(0x7fd990e3c000, 32768) = 0
[pid 12087] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12087] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12087] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12087] close(4)                    = 0
[pid 12087] close(3)                    = 0
[pid 12087] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12087] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12087] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12087] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12087] open("./bus", O_RDONLY)     = 3
[pid 12087] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12087] exit_group(0)               = ?
[pid 12087] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12087, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12088
./strace-static-x86_64: Process 12088 attached
[pid 12088] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12088] setpgid(0, 0)               = 0
[pid 12088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12088] write(3, "1000", 4)         = 4
[pid 12088] close(3)                    = 0
[pid 12088] memfd_create("syzkaller", 0) = 3
[pid 12088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12088] munmap(0x7fd990e3c000, 32768) = 0
[pid 12088] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12088] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12088] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12088] close(4)                    = 0
[pid 12088] close(3)                    = 0
[pid 12088] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12088] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12088] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12088] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12088] open("./bus", O_RDONLY)     = 3
[pid 12088] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12088] exit_group(0)               = ?
[pid 12088] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12088, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12089
./strace-static-x86_64: Process 12089 attached
[pid 12089] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12089] setpgid(0, 0)               = 0
[pid 12089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12089] write(3, "1000", 4)         = 4
[pid 12089] close(3)                    = 0
[pid 12089] memfd_create("syzkaller", 0) = 3
[pid 12089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12089] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12089] munmap(0x7fd990e3c000, 32768) = 0
[pid 12089] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12089] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12089] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12089] close(4)                    = 0
[pid 12089] close(3)                    = 0
[pid 12089] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12089] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12089] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12089] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12089] open("./bus", O_RDONLY)     = 3
[pid 12089] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12089] exit_group(0)               = ?
[pid 12089] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12089, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12090 attached
, child_tidptr=0x55555567f5d0) = 12090
[pid 12090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12090] setpgid(0, 0)               = 0
[pid 12090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12090] write(3, "1000", 4)         = 4
[pid 12090] close(3)                    = 0
[pid 12090] memfd_create("syzkaller", 0) = 3
[pid 12090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12090] munmap(0x7fd990e3c000, 32768) = 0
[pid 12090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12090] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12090] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12090] close(4)                    = 0
[pid 12090] close(3)                    = 0
[pid 12090] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12090] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12090] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12090] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12090] open("./bus", O_RDONLY)     = 3
[pid 12090] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12090] exit_group(0)               = ?
[pid 12090] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12090, 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 12091 attached
, child_tidptr=0x55555567f5d0) = 12091
[pid 12091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12091] setpgid(0, 0)               = 0
[pid 12091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12091] write(3, "1000", 4)         = 4
[pid 12091] close(3)                    = 0
[pid 12091] memfd_create("syzkaller", 0) = 3
[pid 12091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12091] munmap(0x7fd990e3c000, 32768) = 0
[pid 12091] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12091] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12091] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12091] close(4)                    = 0
[pid 12091] close(3)                    = 0
[pid 12091] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12091] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12091] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12091] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12091] open("./bus", O_RDONLY)     = 3
[pid 12091] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12091] exit_group(0)               = ?
[pid 12091] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12091, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12092 attached
, child_tidptr=0x55555567f5d0) = 12092
[pid 12092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12092] setpgid(0, 0)               = 0
[pid 12092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12092] write(3, "1000", 4)         = 4
[pid 12092] close(3)                    = 0
[pid 12092] memfd_create("syzkaller", 0) = 3
[pid 12092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12092] munmap(0x7fd990e3c000, 32768) = 0
[pid 12092] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12092] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12092] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12092] close(4)                    = 0
[pid 12092] close(3)                    = 0
[pid 12092] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12092] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12092] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12092] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12092] open("./bus", O_RDONLY)     = 3
[pid 12092] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12092] exit_group(0)               = ?
[pid 12092] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12092, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12093 attached
, child_tidptr=0x55555567f5d0) = 12093
[pid 12093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12093] setpgid(0, 0)               = 0
[pid 12093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12093] write(3, "1000", 4)         = 4
[pid 12093] close(3)                    = 0
[pid 12093] memfd_create("syzkaller", 0) = 3
[pid 12093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12093] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12093] munmap(0x7fd990e3c000, 32768) = 0
[pid 12093] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12093] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12093] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12093] close(4)                    = 0
[pid 12093] close(3)                    = 0
[pid 12093] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12093] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12093] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12093] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12093] open("./bus", O_RDONLY)     = 3
[pid 12093] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12093] exit_group(0)               = ?
[pid 12093] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12093, 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 12094 attached
, child_tidptr=0x55555567f5d0) = 12094
[pid 12094] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12094] setpgid(0, 0)               = 0
[pid 12094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12094] write(3, "1000", 4)         = 4
[pid 12094] close(3)                    = 0
[pid 12094] memfd_create("syzkaller", 0) = 3
[pid 12094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12094] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12094] munmap(0x7fd990e3c000, 32768) = 0
[pid 12094] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12094] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12094] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12094] close(4)                    = 0
[pid 12094] close(3)                    = 0
[pid 12094] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12094] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12094] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12094] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12094] open("./bus", O_RDONLY)     = 3
[pid 12094] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12094] exit_group(0)               = ?
[pid 12094] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12094, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12095 attached
, child_tidptr=0x55555567f5d0) = 12095
[pid 12095] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12095] setpgid(0, 0)               = 0
[pid 12095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12095] write(3, "1000", 4)         = 4
[pid 12095] close(3)                    = 0
[pid 12095] memfd_create("syzkaller", 0) = 3
[pid 12095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12095] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12095] munmap(0x7fd990e3c000, 32768) = 0
[pid 12095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12095] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12095] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12095] close(4)                    = 0
[pid 12095] close(3)                    = 0
[pid 12095] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12095] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12095] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12095] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12095] open("./bus", O_RDONLY)     = 3
[pid 12095] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12095] exit_group(0)               = ?
[pid 12095] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12095, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12096
./strace-static-x86_64: Process 12096 attached
[pid 12096] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12096] setpgid(0, 0)               = 0
[pid 12096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12096] write(3, "1000", 4)         = 4
[pid 12096] close(3)                    = 0
[pid 12096] memfd_create("syzkaller", 0) = 3
[pid 12096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12096] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12096] munmap(0x7fd990e3c000, 32768) = 0
[pid 12096] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12096] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12096] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12096] close(4)                    = 0
[pid 12096] close(3)                    = 0
[pid 12096] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12096] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12096] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12096] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12096] open("./bus", O_RDONLY)     = 3
[pid 12096] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12096] exit_group(0)               = ?
[pid 12096] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12096, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12097
./strace-static-x86_64: Process 12097 attached
[pid 12097] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12097] setpgid(0, 0)               = 0
[pid 12097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12097] write(3, "1000", 4)         = 4
[pid 12097] close(3)                    = 0
[pid 12097] memfd_create("syzkaller", 0) = 3
[pid 12097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12097] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12097] munmap(0x7fd990e3c000, 32768) = 0
[pid 12097] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12097] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12097] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12097] close(4)                    = 0
[pid 12097] close(3)                    = 0
[pid 12097] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12097] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12097] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12097] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12097] open("./bus", O_RDONLY)     = 3
[pid 12097] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12097] exit_group(0)               = ?
[pid 12097] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12097, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12098
./strace-static-x86_64: Process 12098 attached
[pid 12098] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12098] setpgid(0, 0)               = 0
[pid 12098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12098] write(3, "1000", 4)         = 4
[pid 12098] close(3)                    = 0
[pid 12098] memfd_create("syzkaller", 0) = 3
[pid 12098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12098] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12098] munmap(0x7fd990e3c000, 32768) = 0
[pid 12098] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12098] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12098] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12098] close(4)                    = 0
[pid 12098] close(3)                    = 0
[pid 12098] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12098] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12098] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12098] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12098] open("./bus", O_RDONLY)     = 3
[pid 12098] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12098] exit_group(0)               = ?
[pid 12098] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12098, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12099
./strace-static-x86_64: Process 12099 attached
[pid 12099] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12099] setpgid(0, 0)               = 0
[pid 12099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12099] write(3, "1000", 4)         = 4
[pid 12099] close(3)                    = 0
[pid 12099] memfd_create("syzkaller", 0) = 3
[pid 12099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12099] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12099] munmap(0x7fd990e3c000, 32768) = 0
[pid 12099] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12099] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12099] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12099] close(4)                    = 0
[pid 12099] close(3)                    = 0
[pid 12099] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12099] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12099] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12099] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12099] open("./bus", O_RDONLY)     = 3
[pid 12099] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12099] exit_group(0)               = ?
[pid 12099] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12099, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12100
./strace-static-x86_64: Process 12100 attached
[pid 12100] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12100] setpgid(0, 0)               = 0
[pid 12100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12100] write(3, "1000", 4)         = 4
[pid 12100] close(3)                    = 0
[pid 12100] memfd_create("syzkaller", 0) = 3
[pid 12100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12100] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12100] munmap(0x7fd990e3c000, 32768) = 0
[pid 12100] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12100] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12100] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12100] close(4)                    = 0
[pid 12100] close(3)                    = 0
[pid 12100] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12100] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12100] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12100] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12100] open("./bus", O_RDONLY)     = 3
[pid 12100] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12100] exit_group(0)               = ?
[pid 12100] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12100, 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 12101 attached
, child_tidptr=0x55555567f5d0) = 12101
[pid 12101] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12101] setpgid(0, 0)               = 0
[pid 12101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12101] write(3, "1000", 4)         = 4
[pid 12101] close(3)                    = 0
[pid 12101] memfd_create("syzkaller", 0) = 3
[pid 12101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12101] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12101] munmap(0x7fd990e3c000, 32768) = 0
[pid 12101] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12101] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12101] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12101] close(4)                    = 0
[pid 12101] close(3)                    = 0
[pid 12101] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12101] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12101] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12101] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12101] open("./bus", O_RDONLY)     = 3
[pid 12101] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12101] exit_group(0)               = ?
[pid 12101] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12101, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12102
./strace-static-x86_64: Process 12102 attached
[pid 12102] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12102] setpgid(0, 0)               = 0
[pid 12102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12102] write(3, "1000", 4)         = 4
[pid 12102] close(3)                    = 0
[pid 12102] memfd_create("syzkaller", 0) = 3
[pid 12102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12102] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12102] munmap(0x7fd990e3c000, 32768) = 0
[pid 12102] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12102] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12102] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12102] close(4)                    = 0
[pid 12102] close(3)                    = 0
[pid 12102] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12102] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12102] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12102] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12102] open("./bus", O_RDONLY)     = 3
[pid 12102] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12102] exit_group(0)               = ?
[pid 12102] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12102, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12103 attached
, child_tidptr=0x55555567f5d0) = 12103
[pid 12103] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12103] setpgid(0, 0)               = 0
[pid 12103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12103] write(3, "1000", 4)         = 4
[pid 12103] close(3)                    = 0
[pid 12103] memfd_create("syzkaller", 0) = 3
[pid 12103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12103] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12103] munmap(0x7fd990e3c000, 32768) = 0
[pid 12103] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12103] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12103] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12103] close(4)                    = 0
[pid 12103] close(3)                    = 0
[pid 12103] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12103] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12103] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12103] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12103] open("./bus", O_RDONLY)     = 3
[pid 12103] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12103] exit_group(0)               = ?
[pid 12103] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12103, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12104 attached
, child_tidptr=0x55555567f5d0) = 12104
[pid 12104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12104] setpgid(0, 0)               = 0
[pid 12104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12104] write(3, "1000", 4)         = 4
[pid 12104] close(3)                    = 0
[pid 12104] memfd_create("syzkaller", 0) = 3
[pid 12104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12104] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12104] munmap(0x7fd990e3c000, 32768) = 0
[pid 12104] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12104] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12104] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12104] close(4)                    = 0
[pid 12104] close(3)                    = 0
[pid 12104] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12104] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12104] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12104] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12104] open("./bus", O_RDONLY)     = 3
[pid 12104] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12104] exit_group(0)               = ?
[pid 12104] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12104, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12105 attached
, child_tidptr=0x55555567f5d0) = 12105
[pid 12105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12105] setpgid(0, 0)               = 0
[pid 12105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12105] write(3, "1000", 4)         = 4
[pid 12105] close(3)                    = 0
[pid 12105] memfd_create("syzkaller", 0) = 3
[pid 12105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12105] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12105] munmap(0x7fd990e3c000, 32768) = 0
[pid 12105] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12105] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12105] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12105] close(4)                    = 0
[pid 12105] close(3)                    = 0
[pid 12105] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12105] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12105] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12105] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12105] open("./bus", O_RDONLY)     = 3
[pid 12105] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12105] exit_group(0)               = ?
[pid 12105] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12105, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12106
./strace-static-x86_64: Process 12106 attached
[pid 12106] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12106] setpgid(0, 0)               = 0
[pid 12106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12106] write(3, "1000", 4)         = 4
[pid 12106] close(3)                    = 0
[pid 12106] memfd_create("syzkaller", 0) = 3
[pid 12106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12106] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12106] munmap(0x7fd990e3c000, 32768) = 0
[pid 12106] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12106] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12106] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12106] close(4)                    = 0
[pid 12106] close(3)                    = 0
[pid 12106] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12106] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12106] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12106] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12106] open("./bus", O_RDONLY)     = 3
[pid 12106] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12106] exit_group(0)               = ?
[pid 12106] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12106, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12107
./strace-static-x86_64: Process 12107 attached
[pid 12107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12107] setpgid(0, 0)               = 0
[pid 12107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12107] write(3, "1000", 4)         = 4
[pid 12107] close(3)                    = 0
[pid 12107] memfd_create("syzkaller", 0) = 3
[pid 12107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12107] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12107] munmap(0x7fd990e3c000, 32768) = 0
[pid 12107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12107] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12107] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12107] close(4)                    = 0
[pid 12107] close(3)                    = 0
[pid 12107] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12107] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12107] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12107] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12107] open("./bus", O_RDONLY)     = 3
[pid 12107] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12107] exit_group(0)               = ?
[pid 12107] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12107, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12108 attached
, child_tidptr=0x55555567f5d0) = 12108
[pid 12108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12108] setpgid(0, 0)               = 0
[pid 12108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12108] write(3, "1000", 4)         = 4
[pid 12108] close(3)                    = 0
[pid 12108] memfd_create("syzkaller", 0) = 3
[pid 12108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12108] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12108] munmap(0x7fd990e3c000, 32768) = 0
[pid 12108] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12108] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12108] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12108] close(4)                    = 0
[pid 12108] close(3)                    = 0
[pid 12108] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12108] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12108] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12108] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12108] open("./bus", O_RDONLY)     = 3
[pid 12108] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12108] exit_group(0)               = ?
[pid 12108] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12108, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12109
./strace-static-x86_64: Process 12109 attached
[pid 12109] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12109] setpgid(0, 0)               = 0
[pid 12109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12109] write(3, "1000", 4)         = 4
[pid 12109] close(3)                    = 0
[pid 12109] memfd_create("syzkaller", 0) = 3
[pid 12109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12109] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12109] munmap(0x7fd990e3c000, 32768) = 0
[pid 12109] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12109] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12109] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12109] close(4)                    = 0
[pid 12109] close(3)                    = 0
[pid 12109] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12109] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12109] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12109] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12109] open("./bus", O_RDONLY)     = 3
[pid 12109] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12109] exit_group(0)               = ?
[pid 12109] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12109, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12110 attached
, child_tidptr=0x55555567f5d0) = 12110
[pid 12110] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12110] setpgid(0, 0)               = 0
[pid 12110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12110] write(3, "1000", 4)         = 4
[pid 12110] close(3)                    = 0
[pid 12110] memfd_create("syzkaller", 0) = 3
[pid 12110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12110] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12110] munmap(0x7fd990e3c000, 32768) = 0
[pid 12110] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12110] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12110] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12110] close(4)                    = 0
[pid 12110] close(3)                    = 0
[pid 12110] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12110] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12110] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12110] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12110] open("./bus", O_RDONLY)     = 3
[pid 12110] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12110] exit_group(0)               = ?
[pid 12110] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12110, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12111
./strace-static-x86_64: Process 12111 attached
[pid 12111] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12111] setpgid(0, 0)               = 0
[pid 12111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12111] write(3, "1000", 4)         = 4
[pid 12111] close(3)                    = 0
[pid 12111] memfd_create("syzkaller", 0) = 3
[pid 12111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12111] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12111] munmap(0x7fd990e3c000, 32768) = 0
[pid 12111] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12111] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12111] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12111] close(4)                    = 0
[pid 12111] close(3)                    = 0
[pid 12111] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12111] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12111] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12111] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12111] open("./bus", O_RDONLY)     = 3
[pid 12111] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12111] exit_group(0)               = ?
[pid 12111] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12111, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12112
./strace-static-x86_64: Process 12112 attached
[pid 12112] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12112] setpgid(0, 0)               = 0
[pid 12112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12112] write(3, "1000", 4)         = 4
[pid 12112] close(3)                    = 0
[pid 12112] memfd_create("syzkaller", 0) = 3
[pid 12112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12112] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12112] munmap(0x7fd990e3c000, 32768) = 0
[pid 12112] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12112] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12112] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12112] close(4)                    = 0
[pid 12112] close(3)                    = 0
[pid 12112] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12112] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12112] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12112] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12112] open("./bus", O_RDONLY)     = 3
[pid 12112] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12112] exit_group(0)               = ?
[pid 12112] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12112, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12113
./strace-static-x86_64: Process 12113 attached
[pid 12113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12113] setpgid(0, 0)               = 0
[pid 12113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12113] write(3, "1000", 4)         = 4
[pid 12113] close(3)                    = 0
[pid 12113] memfd_create("syzkaller", 0) = 3
[pid 12113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12113] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12113] munmap(0x7fd990e3c000, 32768) = 0
[pid 12113] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12113] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12113] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12113] close(4)                    = 0
[pid 12113] close(3)                    = 0
[pid 12113] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12113] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12113] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12113] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12113] open("./bus", O_RDONLY)     = 3
[pid 12113] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12113] exit_group(0)               = ?
[pid 12113] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12113, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12114
./strace-static-x86_64: Process 12114 attached
[pid 12114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12114] setpgid(0, 0)               = 0
[pid 12114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12114] write(3, "1000", 4)         = 4
[pid 12114] close(3)                    = 0
[pid 12114] memfd_create("syzkaller", 0) = 3
[pid 12114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12114] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12114] munmap(0x7fd990e3c000, 32768) = 0
[pid 12114] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12114] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12114] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12114] close(4)                    = 0
[pid 12114] close(3)                    = 0
[pid 12114] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12114] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12114] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12114] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12114] open("./bus", O_RDONLY)     = 3
[pid 12114] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12114] exit_group(0)               = ?
[pid 12114] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12114, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12115 attached
, child_tidptr=0x55555567f5d0) = 12115
[pid 12115] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12115] setpgid(0, 0)               = 0
[pid 12115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12115] write(3, "1000", 4)         = 4
[pid 12115] close(3)                    = 0
[pid 12115] memfd_create("syzkaller", 0) = 3
[pid 12115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12115] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12115] munmap(0x7fd990e3c000, 32768) = 0
[pid 12115] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12115] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12115] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12115] close(4)                    = 0
[pid 12115] close(3)                    = 0
[pid 12115] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12115] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12115] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12115] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12115] open("./bus", O_RDONLY)     = 3
[pid 12115] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12115] exit_group(0)               = ?
[pid 12115] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12115, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12116
./strace-static-x86_64: Process 12116 attached
[pid 12116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12116] setpgid(0, 0)               = 0
[pid 12116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12116] write(3, "1000", 4)         = 4
[pid 12116] close(3)                    = 0
[pid 12116] memfd_create("syzkaller", 0) = 3
[pid 12116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12116] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12116] munmap(0x7fd990e3c000, 32768) = 0
[pid 12116] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12116] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12116] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12116] close(4)                    = 0
[pid 12116] close(3)                    = 0
[pid 12116] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12116] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12116] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12116] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12116] open("./bus", O_RDONLY)     = 3
[pid 12116] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12116] exit_group(0)               = ?
[pid 12116] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12116, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12117 attached
, child_tidptr=0x55555567f5d0) = 12117
[pid 12117] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12117] setpgid(0, 0)               = 0
[pid 12117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12117] write(3, "1000", 4)         = 4
[pid 12117] close(3)                    = 0
[pid 12117] memfd_create("syzkaller", 0) = 3
[pid 12117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12117] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12117] munmap(0x7fd990e3c000, 32768) = 0
[pid 12117] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12117] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12117] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12117] close(4)                    = 0
[pid 12117] close(3)                    = 0
[pid 12117] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12117] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12117] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12117] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12117] open("./bus", O_RDONLY)     = 3
[pid 12117] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12117] exit_group(0)               = ?
[pid 12117] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12117, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12118
./strace-static-x86_64: Process 12118 attached
[pid 12118] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12118] setpgid(0, 0)               = 0
[pid 12118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12118] write(3, "1000", 4)         = 4
[pid 12118] close(3)                    = 0
[pid 12118] memfd_create("syzkaller", 0) = 3
[pid 12118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12118] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12118] munmap(0x7fd990e3c000, 32768) = 0
[pid 12118] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12118] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12118] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12118] close(4)                    = 0
[pid 12118] close(3)                    = 0
[pid 12118] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12118] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12118] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12118] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12118] open("./bus", O_RDONLY)     = 3
[pid 12118] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12118] exit_group(0)               = ?
[pid 12118] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12118, 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=0x55555567f5d0) = 12119
./strace-static-x86_64: Process 12119 attached
[pid 12119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12119] setpgid(0, 0)               = 0
[pid 12119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12119] write(3, "1000", 4)         = 4
[pid 12119] close(3)                    = 0
[pid 12119] memfd_create("syzkaller", 0) = 3
[pid 12119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12119] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12119] munmap(0x7fd990e3c000, 32768) = 0
[pid 12119] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12119] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12119] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12119] close(4)                    = 0
[pid 12119] close(3)                    = 0
[pid 12119] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12119] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12119] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12119] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12119] open("./bus", O_RDONLY)     = 3
[pid 12119] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12119] exit_group(0)               = ?
[pid 12119] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12119, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12120
./strace-static-x86_64: Process 12120 attached
[pid 12120] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12120] setpgid(0, 0)               = 0
[pid 12120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12120] write(3, "1000", 4)         = 4
[pid 12120] close(3)                    = 0
[pid 12120] memfd_create("syzkaller", 0) = 3
[pid 12120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12120] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12120] munmap(0x7fd990e3c000, 32768) = 0
[pid 12120] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12120] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12120] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12120] close(4)                    = 0
[pid 12120] close(3)                    = 0
[pid 12120] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12120] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12120] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12120] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12120] open("./bus", O_RDONLY)     = 3
[pid 12120] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12120] exit_group(0)               = ?
[pid 12120] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12120, 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=0x55555567f5d0) = 12121
./strace-static-x86_64: Process 12121 attached
[pid 12121] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12121] setpgid(0, 0)               = 0
[pid 12121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12121] write(3, "1000", 4)         = 4
[pid 12121] close(3)                    = 0
[pid 12121] memfd_create("syzkaller", 0) = 3
[pid 12121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12121] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12121] munmap(0x7fd990e3c000, 32768) = 0
[pid 12121] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12121] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12121] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12121] close(4)                    = 0
[pid 12121] close(3)                    = 0
[pid 12121] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12121] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12121] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12121] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12121] open("./bus", O_RDONLY)     = 3
[pid 12121] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12121] exit_group(0)               = ?
[pid 12121] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12121, 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 12122 attached
, child_tidptr=0x55555567f5d0) = 12122
[pid 12122] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12122] setpgid(0, 0)               = 0
[pid 12122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12122] write(3, "1000", 4)         = 4
[pid 12122] close(3)                    = 0
[pid 12122] memfd_create("syzkaller", 0) = 3
[pid 12122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12122] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12122] munmap(0x7fd990e3c000, 32768) = 0
[pid 12122] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12122] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12122] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12122] close(4)                    = 0
[pid 12122] close(3)                    = 0
[pid 12122] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12122] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12122] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12122] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12122] open("./bus", O_RDONLY)     = 3
[pid 12122] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12122] exit_group(0)               = ?
[pid 12122] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12122, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12123
./strace-static-x86_64: Process 12123 attached
[pid 12123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12123] setpgid(0, 0)               = 0
[pid 12123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12123] write(3, "1000", 4)         = 4
[pid 12123] close(3)                    = 0
[pid 12123] memfd_create("syzkaller", 0) = 3
[pid 12123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12123] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12123] munmap(0x7fd990e3c000, 32768) = 0
[pid 12123] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12123] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12123] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12123] close(4)                    = 0
[pid 12123] close(3)                    = 0
[pid 12123] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12123] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12123] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12123] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12123] open("./bus", O_RDONLY)     = 3
[pid 12123] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12123] exit_group(0)               = ?
[pid 12123] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12123, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12124
./strace-static-x86_64: Process 12124 attached
[pid 12124] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12124] setpgid(0, 0)               = 0
[pid 12124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12124] write(3, "1000", 4)         = 4
[pid 12124] close(3)                    = 0
[pid 12124] memfd_create("syzkaller", 0) = 3
[pid 12124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12124] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12124] munmap(0x7fd990e3c000, 32768) = 0
[pid 12124] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12124] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12124] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12124] close(4)                    = 0
[pid 12124] close(3)                    = 0
[pid 12124] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12124] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12124] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12124] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12124] open("./bus", O_RDONLY)     = 3
[pid 12124] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12124] exit_group(0)               = ?
[pid 12124] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12124, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12125
./strace-static-x86_64: Process 12125 attached
[pid 12125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12125] setpgid(0, 0)               = 0
[pid 12125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12125] write(3, "1000", 4)         = 4
[pid 12125] close(3)                    = 0
[pid 12125] memfd_create("syzkaller", 0) = 3
[pid 12125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12125] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12125] munmap(0x7fd990e3c000, 32768) = 0
[pid 12125] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12125] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12125] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12125] close(4)                    = 0
[pid 12125] close(3)                    = 0
[pid 12125] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12125] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12125] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12125] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12125] open("./bus", O_RDONLY)     = 3
[pid 12125] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12125] exit_group(0)               = ?
[pid 12125] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12125, 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 12126 attached
, child_tidptr=0x55555567f5d0) = 12126
[pid 12126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12126] setpgid(0, 0)               = 0
[pid 12126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12126] write(3, "1000", 4)         = 4
[pid 12126] close(3)                    = 0
[pid 12126] memfd_create("syzkaller", 0) = 3
[pid 12126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12126] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12126] munmap(0x7fd990e3c000, 32768) = 0
[pid 12126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12126] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12126] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12126] close(4)                    = 0
[pid 12126] close(3)                    = 0
[pid 12126] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12126] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12126] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12126] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12126] open("./bus", O_RDONLY)     = 3
[pid 12126] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12126] exit_group(0)               = ?
[pid 12126] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12126, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12127 attached
, child_tidptr=0x55555567f5d0) = 12127
[pid 12127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12127] setpgid(0, 0)               = 0
[pid 12127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12127] write(3, "1000", 4)         = 4
[pid 12127] close(3)                    = 0
[pid 12127] memfd_create("syzkaller", 0) = 3
[pid 12127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12127] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12127] munmap(0x7fd990e3c000, 32768) = 0
[pid 12127] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12127] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12127] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12127] close(4)                    = 0
[pid 12127] close(3)                    = 0
[pid 12127] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12127] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12127] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12127] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12127] open("./bus", O_RDONLY)     = 3
[pid 12127] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12127] exit_group(0)               = ?
[pid 12127] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12127, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12128
./strace-static-x86_64: Process 12128 attached
[pid 12128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12128] setpgid(0, 0)               = 0
[pid 12128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12128] write(3, "1000", 4)         = 4
[pid 12128] close(3)                    = 0
[pid 12128] memfd_create("syzkaller", 0) = 3
[pid 12128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12128] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12128] munmap(0x7fd990e3c000, 32768) = 0
[pid 12128] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12128] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12128] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12128] close(4)                    = 0
[pid 12128] close(3)                    = 0
[pid 12128] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12128] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12128] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12128] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12128] open("./bus", O_RDONLY)     = 3
[pid 12128] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12128] exit_group(0)               = ?
[pid 12128] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12128, 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=0x55555567f5d0) = 12129
./strace-static-x86_64: Process 12129 attached
[pid 12129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12129] setpgid(0, 0)               = 0
[pid 12129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12129] write(3, "1000", 4)         = 4
[pid 12129] close(3)                    = 0
[pid 12129] memfd_create("syzkaller", 0) = 3
[pid 12129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12129] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12129] munmap(0x7fd990e3c000, 32768) = 0
[pid 12129] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12129] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12129] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12129] close(4)                    = 0
[pid 12129] close(3)                    = 0
[pid 12129] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12129] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12129] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12129] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12129] open("./bus", O_RDONLY)     = 3
[pid 12129] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12129] exit_group(0)               = ?
[pid 12129] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12129, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12130
./strace-static-x86_64: Process 12130 attached
[pid 12130] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12130] setpgid(0, 0)               = 0
[pid 12130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12130] write(3, "1000", 4)         = 4
[pid 12130] close(3)                    = 0
[pid 12130] memfd_create("syzkaller", 0) = 3
[pid 12130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12130] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12130] munmap(0x7fd990e3c000, 32768) = 0
[pid 12130] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12130] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12130] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12130] close(4)                    = 0
[pid 12130] close(3)                    = 0
[pid 12130] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12130] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12130] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12130] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12130] open("./bus", O_RDONLY)     = 3
[pid 12130] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12130] exit_group(0)               = ?
[pid 12130] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12130, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12131 attached
, child_tidptr=0x55555567f5d0) = 12131
[pid 12131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12131] setpgid(0, 0)               = 0
[pid 12131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12131] write(3, "1000", 4)         = 4
[pid 12131] close(3)                    = 0
[pid 12131] memfd_create("syzkaller", 0) = 3
[pid 12131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12131] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12131] munmap(0x7fd990e3c000, 32768) = 0
[pid 12131] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12131] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12131] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12131] close(4)                    = 0
[pid 12131] close(3)                    = 0
[pid 12131] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12131] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12131] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12131] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12131] open("./bus", O_RDONLY)     = 3
[pid 12131] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12131] exit_group(0)               = ?
[pid 12131] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12131, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12132 attached
, child_tidptr=0x55555567f5d0) = 12132
[pid 12132] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12132] setpgid(0, 0)               = 0
[pid 12132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12132] write(3, "1000", 4)         = 4
[pid 12132] close(3)                    = 0
[pid 12132] memfd_create("syzkaller", 0) = 3
[pid 12132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12132] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12132] munmap(0x7fd990e3c000, 32768) = 0
[pid 12132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12132] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12132] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12132] close(4)                    = 0
[pid 12132] close(3)                    = 0
[pid 12132] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12132] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12132] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12132] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12132] open("./bus", O_RDONLY)     = 3
[pid 12132] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12132] exit_group(0)               = ?
[pid 12132] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12132, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12133
./strace-static-x86_64: Process 12133 attached
[pid 12133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12133] setpgid(0, 0)               = 0
[pid 12133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12133] write(3, "1000", 4)         = 4
[pid 12133] close(3)                    = 0
[pid 12133] memfd_create("syzkaller", 0) = 3
[pid 12133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12133] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12133] munmap(0x7fd990e3c000, 32768) = 0
[pid 12133] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12133] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12133] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12133] close(4)                    = 0
[pid 12133] close(3)                    = 0
[pid 12133] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12133] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12133] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12133] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12133] open("./bus", O_RDONLY)     = 3
[pid 12133] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12133] exit_group(0)               = ?
[pid 12133] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12133, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12134 attached
, child_tidptr=0x55555567f5d0) = 12134
[pid 12134] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12134] setpgid(0, 0)               = 0
[pid 12134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12134] write(3, "1000", 4)         = 4
[pid 12134] close(3)                    = 0
[pid 12134] memfd_create("syzkaller", 0) = 3
[pid 12134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12134] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12134] munmap(0x7fd990e3c000, 32768) = 0
[pid 12134] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12134] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12134] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12134] close(4)                    = 0
[pid 12134] close(3)                    = 0
[pid 12134] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12134] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12134] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12134] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12134] open("./bus", O_RDONLY)     = 3
[pid 12134] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12134] exit_group(0)               = ?
[pid 12134] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12134, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12135
./strace-static-x86_64: Process 12135 attached
[pid 12135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12135] setpgid(0, 0)               = 0
[pid 12135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12135] write(3, "1000", 4)         = 4
[pid 12135] close(3)                    = 0
[pid 12135] memfd_create("syzkaller", 0) = 3
[pid 12135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12135] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12135] munmap(0x7fd990e3c000, 32768) = 0
[pid 12135] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12135] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12135] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12135] close(4)                    = 0
[pid 12135] close(3)                    = 0
[pid 12135] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12135] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12135] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12135] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12135] open("./bus", O_RDONLY)     = 3
[pid 12135] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12135] exit_group(0)               = ?
[pid 12135] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12135, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12136
./strace-static-x86_64: Process 12136 attached
[pid 12136] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12136] setpgid(0, 0)               = 0
[pid 12136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12136] write(3, "1000", 4)         = 4
[pid 12136] close(3)                    = 0
[pid 12136] memfd_create("syzkaller", 0) = 3
[pid 12136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12136] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12136] munmap(0x7fd990e3c000, 32768) = 0
[pid 12136] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12136] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12136] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12136] close(4)                    = 0
[pid 12136] close(3)                    = 0
[pid 12136] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12136] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12136] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12136] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12136] open("./bus", O_RDONLY)     = 3
[pid 12136] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12136] exit_group(0)               = ?
[pid 12136] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12136, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12137
./strace-static-x86_64: Process 12137 attached
[pid 12137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12137] setpgid(0, 0)               = 0
[pid 12137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12137] write(3, "1000", 4)         = 4
[pid 12137] close(3)                    = 0
[pid 12137] memfd_create("syzkaller", 0) = 3
[pid 12137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12137] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12137] munmap(0x7fd990e3c000, 32768) = 0
[pid 12137] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12137] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12137] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12137] close(4)                    = 0
[pid 12137] close(3)                    = 0
[pid 12137] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12137] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12137] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12137] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12137] open("./bus", O_RDONLY)     = 3
[pid 12137] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12137] exit_group(0)               = ?
[pid 12137] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12137, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12138
./strace-static-x86_64: Process 12138 attached
[pid 12138] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12138] setpgid(0, 0)               = 0
[pid 12138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12138] write(3, "1000", 4)         = 4
[pid 12138] close(3)                    = 0
[pid 12138] memfd_create("syzkaller", 0) = 3
[pid 12138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12138] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12138] munmap(0x7fd990e3c000, 32768) = 0
[pid 12138] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12138] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12138] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12138] close(4)                    = 0
[pid 12138] close(3)                    = 0
[pid 12138] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12138] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12138] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12138] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12138] open("./bus", O_RDONLY)     = 3
[pid 12138] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12138] exit_group(0)               = ?
[pid 12138] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12138, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12139
./strace-static-x86_64: Process 12139 attached
[pid 12139] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12139] setpgid(0, 0)               = 0
[pid 12139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12139] write(3, "1000", 4)         = 4
[pid 12139] close(3)                    = 0
[pid 12139] memfd_create("syzkaller", 0) = 3
[pid 12139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12139] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12139] munmap(0x7fd990e3c000, 32768) = 0
[pid 12139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12139] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12139] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12139] close(4)                    = 0
[pid 12139] close(3)                    = 0
[pid 12139] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12139] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12139] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12139] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12139] open("./bus", O_RDONLY)     = 3
[pid 12139] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12139] exit_group(0)               = ?
[pid 12139] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12139, 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 12140 attached
, child_tidptr=0x55555567f5d0) = 12140
[pid 12140] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12140] setpgid(0, 0)               = 0
[pid 12140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12140] write(3, "1000", 4)         = 4
[pid 12140] close(3)                    = 0
[pid 12140] memfd_create("syzkaller", 0) = 3
[pid 12140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12140] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12140] munmap(0x7fd990e3c000, 32768) = 0
[pid 12140] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12140] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12140] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12140] close(4)                    = 0
[pid 12140] close(3)                    = 0
[pid 12140] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12140] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12140] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12140] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12140] open("./bus", O_RDONLY)     = 3
[pid 12140] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12140] exit_group(0)               = ?
[pid 12140] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12140, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12141
./strace-static-x86_64: Process 12141 attached
[pid 12141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12141] setpgid(0, 0)               = 0
[pid 12141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12141] write(3, "1000", 4)         = 4
[pid 12141] close(3)                    = 0
[pid 12141] memfd_create("syzkaller", 0) = 3
[pid 12141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12141] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12141] munmap(0x7fd990e3c000, 32768) = 0
[pid 12141] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12141] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12141] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12141] close(4)                    = 0
[pid 12141] close(3)                    = 0
[pid 12141] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12141] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12141] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12141] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12141] open("./bus", O_RDONLY)     = 3
[pid 12141] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12141] exit_group(0)               = ?
[pid 12141] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12141, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12142
./strace-static-x86_64: Process 12142 attached
[pid 12142] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12142] setpgid(0, 0)               = 0
[pid 12142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12142] write(3, "1000", 4)         = 4
[pid 12142] close(3)                    = 0
[pid 12142] memfd_create("syzkaller", 0) = 3
[pid 12142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12142] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12142] munmap(0x7fd990e3c000, 32768) = 0
[pid 12142] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12142] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12142] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12142] close(4)                    = 0
[pid 12142] close(3)                    = 0
[pid 12142] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12142] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12142] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12142] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12142] open("./bus", O_RDONLY)     = 3
[pid 12142] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12142] exit_group(0)               = ?
[pid 12142] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12142, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12143 attached
, child_tidptr=0x55555567f5d0) = 12143
[pid 12143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12143] setpgid(0, 0)               = 0
[pid 12143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12143] write(3, "1000", 4)         = 4
[pid 12143] close(3)                    = 0
[pid 12143] memfd_create("syzkaller", 0) = 3
[pid 12143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12143] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12143] munmap(0x7fd990e3c000, 32768) = 0
[pid 12143] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12143] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12143] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12143] close(4)                    = 0
[pid 12143] close(3)                    = 0
[pid 12143] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12143] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12143] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12143] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12143] open("./bus", O_RDONLY)     = 3
[pid 12143] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12143] exit_group(0)               = ?
[pid 12143] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12143, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12144 attached
, child_tidptr=0x55555567f5d0) = 12144
[pid 12144] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12144] setpgid(0, 0)               = 0
[pid 12144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12144] write(3, "1000", 4)         = 4
[pid 12144] close(3)                    = 0
[pid 12144] memfd_create("syzkaller", 0) = 3
[pid 12144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12144] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12144] munmap(0x7fd990e3c000, 32768) = 0
[pid 12144] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12144] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12144] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12144] close(4)                    = 0
[pid 12144] close(3)                    = 0
[pid 12144] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12144] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12144] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12144] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12144] open("./bus", O_RDONLY)     = 3
[pid 12144] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12144] exit_group(0)               = ?
[pid 12144] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12144, 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 12145 attached
, child_tidptr=0x55555567f5d0) = 12145
[pid 12145] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12145] setpgid(0, 0)               = 0
[pid 12145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12145] write(3, "1000", 4)         = 4
[pid 12145] close(3)                    = 0
[pid 12145] memfd_create("syzkaller", 0) = 3
[pid 12145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12145] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12145] munmap(0x7fd990e3c000, 32768) = 0
[pid 12145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12145] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12145] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12145] close(4)                    = 0
[pid 12145] close(3)                    = 0
[pid 12145] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12145] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12145] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12145] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12145] open("./bus", O_RDONLY)     = 3
[pid 12145] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12145] exit_group(0)               = ?
[pid 12145] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12145, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12146
./strace-static-x86_64: Process 12146 attached
[pid 12146] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12146] setpgid(0, 0)               = 0
[pid 12146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12146] write(3, "1000", 4)         = 4
[pid 12146] close(3)                    = 0
[pid 12146] memfd_create("syzkaller", 0) = 3
[pid 12146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12146] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12146] munmap(0x7fd990e3c000, 32768) = 0
[pid 12146] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12146] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12146] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12146] close(4)                    = 0
[pid 12146] close(3)                    = 0
[pid 12146] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12146] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12146] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12146] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12146] open("./bus", O_RDONLY)     = 3
[pid 12146] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12146] exit_group(0)               = ?
[pid 12146] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12146, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12147
./strace-static-x86_64: Process 12147 attached
[pid 12147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12147] setpgid(0, 0)               = 0
[pid 12147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12147] write(3, "1000", 4)         = 4
[pid 12147] close(3)                    = 0
[pid 12147] memfd_create("syzkaller", 0) = 3
[pid 12147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12147] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12147] munmap(0x7fd990e3c000, 32768) = 0
[pid 12147] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12147] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12147] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12147] close(4)                    = 0
[pid 12147] close(3)                    = 0
[pid 12147] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12147] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12147] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12147] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12147] open("./bus", O_RDONLY)     = 3
[pid 12147] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12147] exit_group(0)               = ?
[pid 12147] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12147, 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=0x55555567f5d0) = 12148
./strace-static-x86_64: Process 12148 attached
[pid 12148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12148] setpgid(0, 0)               = 0
[pid 12148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12148] write(3, "1000", 4)         = 4
[pid 12148] close(3)                    = 0
[pid 12148] memfd_create("syzkaller", 0) = 3
[pid 12148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12148] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12148] munmap(0x7fd990e3c000, 32768) = 0
[pid 12148] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12148] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12148] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12148] close(4)                    = 0
[pid 12148] close(3)                    = 0
[pid 12148] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12148] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12148] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12148] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12148] open("./bus", O_RDONLY)     = 3
[pid 12148] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12148] exit_group(0)               = ?
[pid 12148] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12148, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12149 attached
, child_tidptr=0x55555567f5d0) = 12149
[pid 12149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12149] setpgid(0, 0)               = 0
[pid 12149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12149] write(3, "1000", 4)         = 4
[pid 12149] close(3)                    = 0
[pid 12149] memfd_create("syzkaller", 0) = 3
[pid 12149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12149] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12149] munmap(0x7fd990e3c000, 32768) = 0
[pid 12149] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12149] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12149] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12149] close(4)                    = 0
[pid 12149] close(3)                    = 0
[pid 12149] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12149] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12149] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12149] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12149] open("./bus", O_RDONLY)     = 3
[pid 12149] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12149] exit_group(0)               = ?
[pid 12149] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12149, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12150 attached
, child_tidptr=0x55555567f5d0) = 12150
[pid 12150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12150] setpgid(0, 0)               = 0
[pid 12150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12150] write(3, "1000", 4)         = 4
[pid 12150] close(3)                    = 0
[pid 12150] memfd_create("syzkaller", 0) = 3
[pid 12150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12150] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12150] munmap(0x7fd990e3c000, 32768) = 0
[pid 12150] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12150] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12150] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12150] close(4)                    = 0
[pid 12150] close(3)                    = 0
[pid 12150] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12150] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12150] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12150] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12150] open("./bus", O_RDONLY)     = 3
[pid 12150] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12150] exit_group(0)               = ?
[pid 12150] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12150, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12151 attached
, child_tidptr=0x55555567f5d0) = 12151
[pid 12151] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12151] setpgid(0, 0)               = 0
[pid 12151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12151] write(3, "1000", 4)         = 4
[pid 12151] close(3)                    = 0
[pid 12151] memfd_create("syzkaller", 0) = 3
[pid 12151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12151] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12151] munmap(0x7fd990e3c000, 32768) = 0
[pid 12151] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12151] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12151] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12151] close(4)                    = 0
[pid 12151] close(3)                    = 0
[pid 12151] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12151] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12151] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12151] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12151] open("./bus", O_RDONLY)     = 3
[pid 12151] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12151] exit_group(0)               = ?
[pid 12151] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12151, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12152
./strace-static-x86_64: Process 12152 attached
[pid 12152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12152] setpgid(0, 0)               = 0
[pid 12152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12152] write(3, "1000", 4)         = 4
[pid 12152] close(3)                    = 0
[pid 12152] memfd_create("syzkaller", 0) = 3
[pid 12152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12152] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12152] munmap(0x7fd990e3c000, 32768) = 0
[pid 12152] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12152] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12152] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12152] close(4)                    = 0
[pid 12152] close(3)                    = 0
[pid 12152] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12152] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12152] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12152] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12152] open("./bus", O_RDONLY)     = 3
[pid 12152] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12152] exit_group(0)               = ?
[pid 12152] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12152, 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 12153 attached
, child_tidptr=0x55555567f5d0) = 12153
[pid 12153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12153] setpgid(0, 0)               = 0
[pid 12153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12153] write(3, "1000", 4)         = 4
[pid 12153] close(3)                    = 0
[pid 12153] memfd_create("syzkaller", 0) = 3
[pid 12153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12153] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12153] munmap(0x7fd990e3c000, 32768) = 0
[pid 12153] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12153] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12153] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12153] close(4)                    = 0
[pid 12153] close(3)                    = 0
[pid 12153] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12153] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12153] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12153] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12153] open("./bus", O_RDONLY)     = 3
[pid 12153] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12153] exit_group(0)               = ?
[pid 12153] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12153, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12154
./strace-static-x86_64: Process 12154 attached
[pid 12154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12154] setpgid(0, 0)               = 0
[pid 12154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12154] write(3, "1000", 4)         = 4
[pid 12154] close(3)                    = 0
[pid 12154] memfd_create("syzkaller", 0) = 3
[pid 12154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12154] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12154] munmap(0x7fd990e3c000, 32768) = 0
[pid 12154] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12154] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12154] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12154] close(4)                    = 0
[pid 12154] close(3)                    = 0
[pid 12154] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12154] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12154] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12154] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12154] open("./bus", O_RDONLY)     = 3
[pid 12154] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12154] exit_group(0)               = ?
[pid 12154] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12154, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12155 attached
, child_tidptr=0x55555567f5d0) = 12155
[pid 12155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12155] setpgid(0, 0)               = 0
[pid 12155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12155] write(3, "1000", 4)         = 4
[pid 12155] close(3)                    = 0
[pid 12155] memfd_create("syzkaller", 0) = 3
[pid 12155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12155] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12155] munmap(0x7fd990e3c000, 32768) = 0
[pid 12155] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12155] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12155] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12155] close(4)                    = 0
[pid 12155] close(3)                    = 0
[pid 12155] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12155] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12155] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12155] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12155] open("./bus", O_RDONLY)     = 3
[pid 12155] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12155] exit_group(0)               = ?
[pid 12155] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12155, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12156
./strace-static-x86_64: Process 12156 attached
[pid 12156] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12156] setpgid(0, 0)               = 0
[pid 12156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12156] write(3, "1000", 4)         = 4
[pid 12156] close(3)                    = 0
[pid 12156] memfd_create("syzkaller", 0) = 3
[pid 12156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12156] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12156] munmap(0x7fd990e3c000, 32768) = 0
[pid 12156] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12156] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12156] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12156] close(4)                    = 0
[pid 12156] close(3)                    = 0
[pid 12156] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12156] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12156] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12156] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12156] open("./bus", O_RDONLY)     = 3
[pid 12156] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12156] exit_group(0)               = ?
[pid 12156] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12156, 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=0x55555567f5d0) = 12157
./strace-static-x86_64: Process 12157 attached
[pid 12157] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12157] setpgid(0, 0)               = 0
[pid 12157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12157] write(3, "1000", 4)         = 4
[pid 12157] close(3)                    = 0
[pid 12157] memfd_create("syzkaller", 0) = 3
[pid 12157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12157] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12157] munmap(0x7fd990e3c000, 32768) = 0
[pid 12157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12157] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12157] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12157] close(4)                    = 0
[pid 12157] close(3)                    = 0
[pid 12157] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12157] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12157] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12157] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12157] open("./bus", O_RDONLY)     = 3
[pid 12157] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12157] exit_group(0)               = ?
[pid 12157] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12157, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12158
./strace-static-x86_64: Process 12158 attached
[pid 12158] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12158] setpgid(0, 0)               = 0
[pid 12158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12158] write(3, "1000", 4)         = 4
[pid 12158] close(3)                    = 0
[pid 12158] memfd_create("syzkaller", 0) = 3
[pid 12158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12158] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12158] munmap(0x7fd990e3c000, 32768) = 0
[pid 12158] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12158] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12158] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12158] close(4)                    = 0
[pid 12158] close(3)                    = 0
[pid 12158] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12158] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12158] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12158] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12158] open("./bus", O_RDONLY)     = 3
[pid 12158] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12158] exit_group(0)               = ?
[pid 12158] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12158, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12159 attached
, child_tidptr=0x55555567f5d0) = 12159
[pid 12159] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12159] setpgid(0, 0)               = 0
[pid 12159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12159] write(3, "1000", 4)         = 4
[pid 12159] close(3)                    = 0
[pid 12159] memfd_create("syzkaller", 0) = 3
[pid 12159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12159] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12159] munmap(0x7fd990e3c000, 32768) = 0
[pid 12159] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12159] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12159] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12159] close(4)                    = 0
[pid 12159] close(3)                    = 0
[pid 12159] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12159] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12159] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12159] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12159] open("./bus", O_RDONLY)     = 3
[pid 12159] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12159] exit_group(0)               = ?
[pid 12159] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12159, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12160 attached
, child_tidptr=0x55555567f5d0) = 12160
[pid 12160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12160] setpgid(0, 0)               = 0
[pid 12160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12160] write(3, "1000", 4)         = 4
[pid 12160] close(3)                    = 0
[pid 12160] memfd_create("syzkaller", 0) = 3
[pid 12160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12160] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12160] munmap(0x7fd990e3c000, 32768) = 0
[pid 12160] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12160] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12160] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12160] close(4)                    = 0
[pid 12160] close(3)                    = 0
[pid 12160] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12160] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12160] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12160] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12160] open("./bus", O_RDONLY)     = 3
[pid 12160] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12160] exit_group(0)               = ?
[pid 12160] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12160, 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 12161 attached
, child_tidptr=0x55555567f5d0) = 12161
[pid 12161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12161] setpgid(0, 0)               = 0
[pid 12161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12161] write(3, "1000", 4)         = 4
[pid 12161] close(3)                    = 0
[pid 12161] memfd_create("syzkaller", 0) = 3
[pid 12161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12161] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12161] munmap(0x7fd990e3c000, 32768) = 0
[pid 12161] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12161] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12161] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12161] close(4)                    = 0
[pid 12161] close(3)                    = 0
[pid 12161] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12161] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12161] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12161] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12161] open("./bus", O_RDONLY)     = 3
[pid 12161] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12161] exit_group(0)               = ?
[pid 12161] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12161, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12162
./strace-static-x86_64: Process 12162 attached
[pid 12162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12162] setpgid(0, 0)               = 0
[pid 12162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12162] write(3, "1000", 4)         = 4
[pid 12162] close(3)                    = 0
[pid 12162] memfd_create("syzkaller", 0) = 3
[pid 12162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12162] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12162] munmap(0x7fd990e3c000, 32768) = 0
[pid 12162] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12162] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12162] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12162] close(4)                    = 0
[pid 12162] close(3)                    = 0
[pid 12162] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12162] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12162] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12162] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12162] open("./bus", O_RDONLY)     = 3
[pid 12162] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12162] exit_group(0)               = ?
[pid 12162] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12162, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12163
./strace-static-x86_64: Process 12163 attached
[pid 12163] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12163] setpgid(0, 0)               = 0
[pid 12163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12163] write(3, "1000", 4)         = 4
[pid 12163] close(3)                    = 0
[pid 12163] memfd_create("syzkaller", 0) = 3
[pid 12163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12163] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12163] munmap(0x7fd990e3c000, 32768) = 0
[pid 12163] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12163] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12163] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12163] close(4)                    = 0
[pid 12163] close(3)                    = 0
[pid 12163] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12163] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12163] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12163] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12163] open("./bus", O_RDONLY)     = 3
[pid 12163] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12163] exit_group(0)               = ?
[pid 12163] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12163, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12164 attached
, child_tidptr=0x55555567f5d0) = 12164
[pid 12164] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12164] setpgid(0, 0)               = 0
[pid 12164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12164] write(3, "1000", 4)         = 4
[pid 12164] close(3)                    = 0
[pid 12164] memfd_create("syzkaller", 0) = 3
[pid 12164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12164] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12164] munmap(0x7fd990e3c000, 32768) = 0
[pid 12164] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12164] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12164] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12164] close(4)                    = 0
[pid 12164] close(3)                    = 0
[pid 12164] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12164] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12164] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12164] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12164] open("./bus", O_RDONLY)     = 3
[pid 12164] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12164] exit_group(0)               = ?
[pid 12164] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12164, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12165
./strace-static-x86_64: Process 12165 attached
[pid 12165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12165] setpgid(0, 0)               = 0
[pid 12165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12165] write(3, "1000", 4)         = 4
[pid 12165] close(3)                    = 0
[pid 12165] memfd_create("syzkaller", 0) = 3
[pid 12165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12165] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12165] munmap(0x7fd990e3c000, 32768) = 0
[pid 12165] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12165] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12165] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12165] close(4)                    = 0
[pid 12165] close(3)                    = 0
[pid 12165] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12165] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12165] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12165] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12165] open("./bus", O_RDONLY)     = 3
[pid 12165] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12165] exit_group(0)               = ?
[pid 12165] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12165, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12166
./strace-static-x86_64: Process 12166 attached
[pid 12166] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12166] setpgid(0, 0)               = 0
[pid 12166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12166] write(3, "1000", 4)         = 4
[pid 12166] close(3)                    = 0
[pid 12166] memfd_create("syzkaller", 0) = 3
[pid 12166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12166] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12166] munmap(0x7fd990e3c000, 32768) = 0
[pid 12166] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12166] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12166] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12166] close(4)                    = 0
[pid 12166] close(3)                    = 0
[pid 12166] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12166] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12166] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12166] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12166] open("./bus", O_RDONLY)     = 3
[pid 12166] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12166] exit_group(0)               = ?
[pid 12166] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12166, 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=0x55555567f5d0) = 12167
./strace-static-x86_64: Process 12167 attached
[pid 12167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12167] setpgid(0, 0)               = 0
[pid 12167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12167] write(3, "1000", 4)         = 4
[pid 12167] close(3)                    = 0
[pid 12167] memfd_create("syzkaller", 0) = 3
[pid 12167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12167] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12167] munmap(0x7fd990e3c000, 32768) = 0
[pid 12167] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12167] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12167] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12167] close(4)                    = 0
[pid 12167] close(3)                    = 0
[pid 12167] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12167] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12167] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12167] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12167] open("./bus", O_RDONLY)     = 3
[pid 12167] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12167] exit_group(0)               = ?
[pid 12167] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12167, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12168
./strace-static-x86_64: Process 12168 attached
[pid 12168] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12168] setpgid(0, 0)               = 0
[pid 12168] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12168] write(3, "1000", 4)         = 4
[pid 12168] close(3)                    = 0
[pid 12168] memfd_create("syzkaller", 0) = 3
[pid 12168] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12168] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12168] munmap(0x7fd990e3c000, 32768) = 0
[pid 12168] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12168] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12168] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12168] close(4)                    = 0
[pid 12168] close(3)                    = 0
[pid 12168] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12168] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12168] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12168] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12168] open("./bus", O_RDONLY)     = 3
[pid 12168] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12168] exit_group(0)               = ?
[pid 12168] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12168, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12169
./strace-static-x86_64: Process 12169 attached
[pid 12169] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12169] setpgid(0, 0)               = 0
[pid 12169] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12169] write(3, "1000", 4)         = 4
[pid 12169] close(3)                    = 0
[pid 12169] memfd_create("syzkaller", 0) = 3
[pid 12169] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12169] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12169] munmap(0x7fd990e3c000, 32768) = 0
[pid 12169] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12169] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12169] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12169] close(4)                    = 0
[pid 12169] close(3)                    = 0
[pid 12169] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12169] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12169] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12169] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12169] open("./bus", O_RDONLY)     = 3
[pid 12169] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12169] exit_group(0)               = ?
[pid 12169] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12169, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12170
./strace-static-x86_64: Process 12170 attached
[pid 12170] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12170] setpgid(0, 0)               = 0
[pid 12170] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12170] write(3, "1000", 4)         = 4
[pid 12170] close(3)                    = 0
[pid 12170] memfd_create("syzkaller", 0) = 3
[pid 12170] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12170] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12170] munmap(0x7fd990e3c000, 32768) = 0
[pid 12170] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12170] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12170] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12170] close(4)                    = 0
[pid 12170] close(3)                    = 0
[pid 12170] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12170] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12170] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12170] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12170] open("./bus", O_RDONLY)     = 3
[pid 12170] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12170] exit_group(0)               = ?
[pid 12170] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12170, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12171
./strace-static-x86_64: Process 12171 attached
[pid 12171] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12171] setpgid(0, 0)               = 0
[pid 12171] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12171] write(3, "1000", 4)         = 4
[pid 12171] close(3)                    = 0
[pid 12171] memfd_create("syzkaller", 0) = 3
[pid 12171] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12171] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12171] munmap(0x7fd990e3c000, 32768) = 0
[pid 12171] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12171] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12171] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12171] close(4)                    = 0
[pid 12171] close(3)                    = 0
[pid 12171] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12171] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12171] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12171] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12171] open("./bus", O_RDONLY)     = 3
[pid 12171] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12171] exit_group(0)               = ?
[pid 12171] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12171, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12172
./strace-static-x86_64: Process 12172 attached
[pid 12172] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12172] setpgid(0, 0)               = 0
[pid 12172] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12172] write(3, "1000", 4)         = 4
[pid 12172] close(3)                    = 0
[pid 12172] memfd_create("syzkaller", 0) = 3
[pid 12172] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12172] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12172] munmap(0x7fd990e3c000, 32768) = 0
[pid 12172] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12172] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12172] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12172] close(4)                    = 0
[pid 12172] close(3)                    = 0
[pid 12172] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12172] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12172] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12172] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12172] open("./bus", O_RDONLY)     = 3
[pid 12172] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12172] exit_group(0)               = ?
[pid 12172] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12172, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12173 attached
, child_tidptr=0x55555567f5d0) = 12173
[pid 12173] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12173] setpgid(0, 0)               = 0
[pid 12173] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12173] write(3, "1000", 4)         = 4
[pid 12173] close(3)                    = 0
[pid 12173] memfd_create("syzkaller", 0) = 3
[pid 12173] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12173] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12173] munmap(0x7fd990e3c000, 32768) = 0
[pid 12173] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12173] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12173] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12173] close(4)                    = 0
[pid 12173] close(3)                    = 0
[pid 12173] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12173] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12173] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12173] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12173] open("./bus", O_RDONLY)     = 3
[pid 12173] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12173] exit_group(0)               = ?
[pid 12173] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12173, 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 12174 attached
, child_tidptr=0x55555567f5d0) = 12174
[pid 12174] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12174] setpgid(0, 0)               = 0
[pid 12174] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12174] write(3, "1000", 4)         = 4
[pid 12174] close(3)                    = 0
[pid 12174] memfd_create("syzkaller", 0) = 3
[pid 12174] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12174] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12174] munmap(0x7fd990e3c000, 32768) = 0
[pid 12174] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12174] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12174] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12174] close(4)                    = 0
[pid 12174] close(3)                    = 0
[pid 12174] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12174] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12174] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12174] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12174] open("./bus", O_RDONLY)     = 3
[pid 12174] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12174] exit_group(0)               = ?
[pid 12174] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12174, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12175 attached
, child_tidptr=0x55555567f5d0) = 12175
[pid 12175] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12175] setpgid(0, 0)               = 0
[pid 12175] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12175] write(3, "1000", 4)         = 4
[pid 12175] close(3)                    = 0
[pid 12175] memfd_create("syzkaller", 0) = 3
[pid 12175] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12175] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12175] munmap(0x7fd990e3c000, 32768) = 0
[pid 12175] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12175] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12175] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12175] close(4)                    = 0
[pid 12175] close(3)                    = 0
[pid 12175] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12175] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12175] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12175] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12175] open("./bus", O_RDONLY)     = 3
[pid 12175] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12175] exit_group(0)               = ?
[pid 12175] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12175, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12176
./strace-static-x86_64: Process 12176 attached
[pid 12176] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12176] setpgid(0, 0)               = 0
[pid 12176] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12176] write(3, "1000", 4)         = 4
[pid 12176] close(3)                    = 0
[pid 12176] memfd_create("syzkaller", 0) = 3
[pid 12176] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12176] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12176] munmap(0x7fd990e3c000, 32768) = 0
[pid 12176] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12176] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12176] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12176] close(4)                    = 0
[pid 12176] close(3)                    = 0
[pid 12176] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12176] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12176] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12176] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12176] open("./bus", O_RDONLY)     = 3
[pid 12176] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12176] exit_group(0)               = ?
[pid 12176] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12176, 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 12177 attached
, child_tidptr=0x55555567f5d0) = 12177
[pid 12177] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12177] setpgid(0, 0)               = 0
[pid 12177] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12177] write(3, "1000", 4)         = 4
[pid 12177] close(3)                    = 0
[pid 12177] memfd_create("syzkaller", 0) = 3
[pid 12177] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12177] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12177] munmap(0x7fd990e3c000, 32768) = 0
[pid 12177] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12177] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12177] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12177] close(4)                    = 0
[pid 12177] close(3)                    = 0
[pid 12177] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12177] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12177] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12177] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12177] open("./bus", O_RDONLY)     = 3
[pid 12177] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12177] exit_group(0)               = ?
[pid 12177] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12177, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12178
./strace-static-x86_64: Process 12178 attached
[pid 12178] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12178] setpgid(0, 0)               = 0
[pid 12178] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12178] write(3, "1000", 4)         = 4
[pid 12178] close(3)                    = 0
[pid 12178] memfd_create("syzkaller", 0) = 3
[pid 12178] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12178] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12178] munmap(0x7fd990e3c000, 32768) = 0
[pid 12178] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12178] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12178] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12178] close(4)                    = 0
[pid 12178] close(3)                    = 0
[pid 12178] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12178] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12178] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12178] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12178] open("./bus", O_RDONLY)     = 3
[pid 12178] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12178] exit_group(0)               = ?
[pid 12178] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12178, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12179
./strace-static-x86_64: Process 12179 attached
[pid 12179] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12179] setpgid(0, 0)               = 0
[pid 12179] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12179] write(3, "1000", 4)         = 4
[pid 12179] close(3)                    = 0
[pid 12179] memfd_create("syzkaller", 0) = 3
[pid 12179] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12179] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12179] munmap(0x7fd990e3c000, 32768) = 0
[pid 12179] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12179] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12179] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12179] close(4)                    = 0
[pid 12179] close(3)                    = 0
[pid 12179] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12179] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12179] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12179] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12179] open("./bus", O_RDONLY)     = 3
[pid 12179] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12179] exit_group(0)               = ?
[pid 12179] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12179, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12180 attached
, child_tidptr=0x55555567f5d0) = 12180
[pid 12180] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12180] setpgid(0, 0)               = 0
[pid 12180] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12180] write(3, "1000", 4)         = 4
[pid 12180] close(3)                    = 0
[pid 12180] memfd_create("syzkaller", 0) = 3
[pid 12180] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12180] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12180] munmap(0x7fd990e3c000, 32768) = 0
[pid 12180] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12180] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12180] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12180] close(4)                    = 0
[pid 12180] close(3)                    = 0
[pid 12180] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12180] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12180] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12180] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12180] open("./bus", O_RDONLY)     = 3
[pid 12180] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12180] exit_group(0)               = ?
[pid 12180] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12180, 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 12181 attached
, child_tidptr=0x55555567f5d0) = 12181
[pid 12181] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12181] setpgid(0, 0)               = 0
[pid 12181] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12181] write(3, "1000", 4)         = 4
[pid 12181] close(3)                    = 0
[pid 12181] memfd_create("syzkaller", 0) = 3
[pid 12181] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12181] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12181] munmap(0x7fd990e3c000, 32768) = 0
[pid 12181] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12181] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12181] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12181] close(4)                    = 0
[pid 12181] close(3)                    = 0
[pid 12181] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12181] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12181] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12181] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12181] open("./bus", O_RDONLY)     = 3
[pid 12181] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12181] exit_group(0)               = ?
[pid 12181] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12181, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12182
./strace-static-x86_64: Process 12182 attached
[pid 12182] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12182] setpgid(0, 0)               = 0
[pid 12182] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12182] write(3, "1000", 4)         = 4
[pid 12182] close(3)                    = 0
[pid 12182] memfd_create("syzkaller", 0) = 3
[pid 12182] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12182] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12182] munmap(0x7fd990e3c000, 32768) = 0
[pid 12182] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12182] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12182] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12182] close(4)                    = 0
[pid 12182] close(3)                    = 0
[pid 12182] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12182] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12182] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12182] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12182] open("./bus", O_RDONLY)     = 3
[pid 12182] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12182] exit_group(0)               = ?
[pid 12182] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12182, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12183 attached
, child_tidptr=0x55555567f5d0) = 12183
[pid 12183] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12183] setpgid(0, 0)               = 0
[pid 12183] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12183] write(3, "1000", 4)         = 4
[pid 12183] close(3)                    = 0
[pid 12183] memfd_create("syzkaller", 0) = 3
[pid 12183] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12183] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12183] munmap(0x7fd990e3c000, 32768) = 0
[pid 12183] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12183] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12183] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12183] close(4)                    = 0
[pid 12183] close(3)                    = 0
[pid 12183] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12183] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12183] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12183] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12183] open("./bus", O_RDONLY)     = 3
[pid 12183] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12183] exit_group(0)               = ?
[pid 12183] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12183, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12184
./strace-static-x86_64: Process 12184 attached
[pid 12184] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12184] setpgid(0, 0)               = 0
[pid 12184] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12184] write(3, "1000", 4)         = 4
[pid 12184] close(3)                    = 0
[pid 12184] memfd_create("syzkaller", 0) = 3
[pid 12184] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12184] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12184] munmap(0x7fd990e3c000, 32768) = 0
[pid 12184] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12184] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12184] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12184] close(4)                    = 0
[pid 12184] close(3)                    = 0
[pid 12184] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12184] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12184] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12184] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12184] open("./bus", O_RDONLY)     = 3
[pid 12184] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12184] exit_group(0)               = ?
[pid 12184] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12184, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12185
./strace-static-x86_64: Process 12185 attached
[pid 12185] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12185] setpgid(0, 0)               = 0
[pid 12185] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12185] write(3, "1000", 4)         = 4
[pid 12185] close(3)                    = 0
[pid 12185] memfd_create("syzkaller", 0) = 3
[pid 12185] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12185] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12185] munmap(0x7fd990e3c000, 32768) = 0
[pid 12185] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12185] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12185] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12185] close(4)                    = 0
[pid 12185] close(3)                    = 0
[pid 12185] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12185] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12185] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12185] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12185] open("./bus", O_RDONLY)     = 3
[pid 12185] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12185] exit_group(0)               = ?
[pid 12185] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12185, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12186 attached
, child_tidptr=0x55555567f5d0) = 12186
[pid 12186] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12186] setpgid(0, 0)               = 0
[pid 12186] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12186] write(3, "1000", 4)         = 4
[pid 12186] close(3)                    = 0
[pid 12186] memfd_create("syzkaller", 0) = 3
[pid 12186] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12186] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12186] munmap(0x7fd990e3c000, 32768) = 0
[pid 12186] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12186] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12186] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12186] close(4)                    = 0
[pid 12186] close(3)                    = 0
[pid 12186] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12186] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12186] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12186] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12186] open("./bus", O_RDONLY)     = 3
[pid 12186] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12186] exit_group(0)               = ?
[pid 12186] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12186, 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 12187 attached
, child_tidptr=0x55555567f5d0) = 12187
[pid 12187] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12187] setpgid(0, 0)               = 0
[pid 12187] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12187] write(3, "1000", 4)         = 4
[pid 12187] close(3)                    = 0
[pid 12187] memfd_create("syzkaller", 0) = 3
[pid 12187] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12187] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12187] munmap(0x7fd990e3c000, 32768) = 0
[pid 12187] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12187] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12187] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12187] close(4)                    = 0
[pid 12187] close(3)                    = 0
[pid 12187] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12187] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12187] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12187] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12187] open("./bus", O_RDONLY)     = 3
[pid 12187] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12187] exit_group(0)               = ?
[pid 12187] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12187, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12188
./strace-static-x86_64: Process 12188 attached
[pid 12188] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12188] setpgid(0, 0)               = 0
[pid 12188] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12188] write(3, "1000", 4)         = 4
[pid 12188] close(3)                    = 0
[pid 12188] memfd_create("syzkaller", 0) = 3
[pid 12188] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12188] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12188] munmap(0x7fd990e3c000, 32768) = 0
[pid 12188] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12188] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12188] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12188] close(4)                    = 0
[pid 12188] close(3)                    = 0
[pid 12188] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12188] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12188] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12188] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12188] open("./bus", O_RDONLY)     = 3
[pid 12188] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12188] exit_group(0)               = ?
[pid 12188] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12188, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12189
./strace-static-x86_64: Process 12189 attached
[pid 12189] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12189] setpgid(0, 0)               = 0
[pid 12189] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12189] write(3, "1000", 4)         = 4
[pid 12189] close(3)                    = 0
[pid 12189] memfd_create("syzkaller", 0) = 3
[pid 12189] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12189] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12189] munmap(0x7fd990e3c000, 32768) = 0
[pid 12189] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12189] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12189] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12189] close(4)                    = 0
[pid 12189] close(3)                    = 0
[pid 12189] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12189] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12189] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12189] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12189] open("./bus", O_RDONLY)     = 3
[pid 12189] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12189] exit_group(0)               = ?
[pid 12189] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12189, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12190 attached
, child_tidptr=0x55555567f5d0) = 12190
[pid 12190] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12190] setpgid(0, 0)               = 0
[pid 12190] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12190] write(3, "1000", 4)         = 4
[pid 12190] close(3)                    = 0
[pid 12190] memfd_create("syzkaller", 0) = 3
[pid 12190] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12190] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12190] munmap(0x7fd990e3c000, 32768) = 0
[pid 12190] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12190] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12190] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12190] close(4)                    = 0
[pid 12190] close(3)                    = 0
[pid 12190] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12190] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12190] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12190] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12190] open("./bus", O_RDONLY)     = 3
[pid 12190] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12190] exit_group(0)               = ?
[pid 12190] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12190, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12191
./strace-static-x86_64: Process 12191 attached
[pid 12191] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12191] setpgid(0, 0)               = 0
[pid 12191] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12191] write(3, "1000", 4)         = 4
[pid 12191] close(3)                    = 0
[pid 12191] memfd_create("syzkaller", 0) = 3
[pid 12191] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12191] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12191] munmap(0x7fd990e3c000, 32768) = 0
[pid 12191] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12191] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12191] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12191] close(4)                    = 0
[pid 12191] close(3)                    = 0
[pid 12191] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12191] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12191] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12191] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12191] open("./bus", O_RDONLY)     = 3
[pid 12191] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12191] exit_group(0)               = ?
[pid 12191] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12191, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12192
./strace-static-x86_64: Process 12192 attached
[pid 12192] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12192] setpgid(0, 0)               = 0
[pid 12192] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12192] write(3, "1000", 4)         = 4
[pid 12192] close(3)                    = 0
[pid 12192] memfd_create("syzkaller", 0) = 3
[pid 12192] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12192] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12192] munmap(0x7fd990e3c000, 32768) = 0
[pid 12192] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12192] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12192] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12192] close(4)                    = 0
[pid 12192] close(3)                    = 0
[pid 12192] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12192] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12192] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12192] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12192] open("./bus", O_RDONLY)     = 3
[pid 12192] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12192] exit_group(0)               = ?
[pid 12192] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12192, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12193
./strace-static-x86_64: Process 12193 attached
[pid 12193] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12193] setpgid(0, 0)               = 0
[pid 12193] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12193] write(3, "1000", 4)         = 4
[pid 12193] close(3)                    = 0
[pid 12193] memfd_create("syzkaller", 0) = 3
[pid 12193] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12193] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12193] munmap(0x7fd990e3c000, 32768) = 0
[pid 12193] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12193] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12193] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12193] close(4)                    = 0
[pid 12193] close(3)                    = 0
[pid 12193] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12193] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12193] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12193] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12193] open("./bus", O_RDONLY)     = 3
[pid 12193] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12193] exit_group(0)               = ?
[pid 12193] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12193, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12194 attached
, child_tidptr=0x55555567f5d0) = 12194
[pid 12194] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12194] setpgid(0, 0)               = 0
[pid 12194] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12194] write(3, "1000", 4)         = 4
[pid 12194] close(3)                    = 0
[pid 12194] memfd_create("syzkaller", 0) = 3
[pid 12194] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12194] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12194] munmap(0x7fd990e3c000, 32768) = 0
[pid 12194] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12194] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12194] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12194] close(4)                    = 0
[pid 12194] close(3)                    = 0
[pid 12194] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12194] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12194] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12194] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12194] open("./bus", O_RDONLY)     = 3
[pid 12194] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12194] exit_group(0)               = ?
[pid 12194] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12194, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12195
./strace-static-x86_64: Process 12195 attached
[pid 12195] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12195] setpgid(0, 0)               = 0
[pid 12195] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12195] write(3, "1000", 4)         = 4
[pid 12195] close(3)                    = 0
[pid 12195] memfd_create("syzkaller", 0) = 3
[pid 12195] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12195] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12195] munmap(0x7fd990e3c000, 32768) = 0
[pid 12195] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12195] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12195] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12195] close(4)                    = 0
[pid 12195] close(3)                    = 0
[pid 12195] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12195] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12195] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12195] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12195] open("./bus", O_RDONLY)     = 3
[pid 12195] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12195] exit_group(0)               = ?
[pid 12195] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12195, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12196
./strace-static-x86_64: Process 12196 attached
[pid 12196] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12196] setpgid(0, 0)               = 0
[pid 12196] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12196] write(3, "1000", 4)         = 4
[pid 12196] close(3)                    = 0
[pid 12196] memfd_create("syzkaller", 0) = 3
[pid 12196] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12196] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12196] munmap(0x7fd990e3c000, 32768) = 0
[pid 12196] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12196] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12196] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12196] close(4)                    = 0
[pid 12196] close(3)                    = 0
[pid 12196] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12196] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12196] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12196] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12196] open("./bus", O_RDONLY)     = 3
[pid 12196] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12196] exit_group(0)               = ?
[pid 12196] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12196, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12197
./strace-static-x86_64: Process 12197 attached
[pid 12197] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12197] setpgid(0, 0)               = 0
[pid 12197] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12197] write(3, "1000", 4)         = 4
[pid 12197] close(3)                    = 0
[pid 12197] memfd_create("syzkaller", 0) = 3
[pid 12197] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12197] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12197] munmap(0x7fd990e3c000, 32768) = 0
[pid 12197] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12197] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12197] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12197] close(4)                    = 0
[pid 12197] close(3)                    = 0
[pid 12197] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12197] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12197] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12197] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12197] open("./bus", O_RDONLY)     = 3
[pid 12197] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12197] exit_group(0)               = ?
[pid 12197] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12197, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12198 attached
, child_tidptr=0x55555567f5d0) = 12198
[pid 12198] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12198] setpgid(0, 0)               = 0
[pid 12198] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12198] write(3, "1000", 4)         = 4
[pid 12198] close(3)                    = 0
[pid 12198] memfd_create("syzkaller", 0) = 3
[pid 12198] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12198] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12198] munmap(0x7fd990e3c000, 32768) = 0
[pid 12198] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12198] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12198] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12198] close(4)                    = 0
[pid 12198] close(3)                    = 0
[pid 12198] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12198] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12198] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12198] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12198] open("./bus", O_RDONLY)     = 3
[pid 12198] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12198] exit_group(0)               = ?
[pid 12198] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12198, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12199
./strace-static-x86_64: Process 12199 attached
[pid 12199] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12199] setpgid(0, 0)               = 0
[pid 12199] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12199] write(3, "1000", 4)         = 4
[pid 12199] close(3)                    = 0
[pid 12199] memfd_create("syzkaller", 0) = 3
[pid 12199] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12199] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12199] munmap(0x7fd990e3c000, 32768) = 0
[pid 12199] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12199] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12199] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12199] close(4)                    = 0
[pid 12199] close(3)                    = 0
[pid 12199] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12199] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12199] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12199] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12199] open("./bus", O_RDONLY)     = 3
[pid 12199] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12199] exit_group(0)               = ?
[pid 12199] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12199, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12200
./strace-static-x86_64: Process 12200 attached
[pid 12200] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12200] setpgid(0, 0)               = 0
[pid 12200] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12200] write(3, "1000", 4)         = 4
[pid 12200] close(3)                    = 0
[pid 12200] memfd_create("syzkaller", 0) = 3
[pid 12200] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12200] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12200] munmap(0x7fd990e3c000, 32768) = 0
[pid 12200] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12200] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12200] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12200] close(4)                    = 0
[pid 12200] close(3)                    = 0
[pid 12200] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12200] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12200] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12200] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12200] open("./bus", O_RDONLY)     = 3
[pid 12200] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12200] exit_group(0)               = ?
[pid 12200] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12200, 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=0x55555567f5d0) = 12201
./strace-static-x86_64: Process 12201 attached
[pid 12201] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12201] setpgid(0, 0)               = 0
[pid 12201] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12201] write(3, "1000", 4)         = 4
[pid 12201] close(3)                    = 0
[pid 12201] memfd_create("syzkaller", 0) = 3
[pid 12201] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12201] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12201] munmap(0x7fd990e3c000, 32768) = 0
[pid 12201] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12201] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12201] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12201] close(4)                    = 0
[pid 12201] close(3)                    = 0
[pid 12201] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12201] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12201] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12201] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12201] open("./bus", O_RDONLY)     = 3
[pid 12201] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12201] exit_group(0)               = ?
[pid 12201] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12201, 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 12202 attached
, child_tidptr=0x55555567f5d0) = 12202
[pid 12202] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12202] setpgid(0, 0)               = 0
[pid 12202] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12202] write(3, "1000", 4)         = 4
[pid 12202] close(3)                    = 0
[pid 12202] memfd_create("syzkaller", 0) = 3
[pid 12202] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12202] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12202] munmap(0x7fd990e3c000, 32768) = 0
[pid 12202] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12202] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12202] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12202] close(4)                    = 0
[pid 12202] close(3)                    = 0
[pid 12202] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12202] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12202] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12202] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12202] open("./bus", O_RDONLY)     = 3
[pid 12202] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12202] exit_group(0)               = ?
[pid 12202] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12202, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12203
./strace-static-x86_64: Process 12203 attached
[pid 12203] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12203] setpgid(0, 0)               = 0
[pid 12203] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12203] write(3, "1000", 4)         = 4
[pid 12203] close(3)                    = 0
[pid 12203] memfd_create("syzkaller", 0) = 3
[pid 12203] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12203] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12203] munmap(0x7fd990e3c000, 32768) = 0
[pid 12203] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12203] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12203] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12203] close(4)                    = 0
[pid 12203] close(3)                    = 0
[pid 12203] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12203] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12203] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12203] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12203] open("./bus", O_RDONLY)     = 3
[pid 12203] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12203] exit_group(0)               = ?
[pid 12203] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12203, 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 12204 attached
, child_tidptr=0x55555567f5d0) = 12204
[pid 12204] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12204] setpgid(0, 0)               = 0
[pid 12204] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12204] write(3, "1000", 4)         = 4
[pid 12204] close(3)                    = 0
[pid 12204] memfd_create("syzkaller", 0) = 3
[pid 12204] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12204] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12204] munmap(0x7fd990e3c000, 32768) = 0
[pid 12204] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12204] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12204] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12204] close(4)                    = 0
[pid 12204] close(3)                    = 0
[pid 12204] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12204] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12204] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12204] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12204] open("./bus", O_RDONLY)     = 3
[pid 12204] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12204] exit_group(0)               = ?
[pid 12204] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12204, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12205 attached
, child_tidptr=0x55555567f5d0) = 12205
[pid 12205] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12205] setpgid(0, 0)               = 0
[pid 12205] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12205] write(3, "1000", 4)         = 4
[pid 12205] close(3)                    = 0
[pid 12205] memfd_create("syzkaller", 0) = 3
[pid 12205] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12205] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12205] munmap(0x7fd990e3c000, 32768) = 0
[pid 12205] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12205] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12205] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12205] close(4)                    = 0
[pid 12205] close(3)                    = 0
[pid 12205] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12205] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12205] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12205] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12205] open("./bus", O_RDONLY)     = 3
[pid 12205] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12205] exit_group(0)               = ?
[pid 12205] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12205, 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=0x55555567f5d0) = 12206
./strace-static-x86_64: Process 12206 attached
[pid 12206] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12206] setpgid(0, 0)               = 0
[pid 12206] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12206] write(3, "1000", 4)         = 4
[pid 12206] close(3)                    = 0
[pid 12206] memfd_create("syzkaller", 0) = 3
[pid 12206] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12206] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12206] munmap(0x7fd990e3c000, 32768) = 0
[pid 12206] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12206] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12206] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12206] close(4)                    = 0
[pid 12206] close(3)                    = 0
[pid 12206] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12206] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12206] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12206] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12206] open("./bus", O_RDONLY)     = 3
[pid 12206] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12206] exit_group(0)               = ?
[pid 12206] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12206, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12207 attached
, child_tidptr=0x55555567f5d0) = 12207
[pid 12207] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12207] setpgid(0, 0)               = 0
[pid 12207] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12207] write(3, "1000", 4)         = 4
[pid 12207] close(3)                    = 0
[pid 12207] memfd_create("syzkaller", 0) = 3
[pid 12207] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12207] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12207] munmap(0x7fd990e3c000, 32768) = 0
[pid 12207] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12207] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12207] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12207] close(4)                    = 0
[pid 12207] close(3)                    = 0
[pid 12207] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12207] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12207] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12207] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12207] open("./bus", O_RDONLY)     = 3
[pid 12207] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12207] exit_group(0)               = ?
[pid 12207] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12207, 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=0x55555567f5d0) = 12208
./strace-static-x86_64: Process 12208 attached
[pid 12208] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12208] setpgid(0, 0)               = 0
[pid 12208] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12208] write(3, "1000", 4)         = 4
[pid 12208] close(3)                    = 0
[pid 12208] memfd_create("syzkaller", 0) = 3
[pid 12208] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12208] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12208] munmap(0x7fd990e3c000, 32768) = 0
[pid 12208] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12208] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12208] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12208] close(4)                    = 0
[pid 12208] close(3)                    = 0
[pid 12208] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12208] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12208] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12208] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12208] open("./bus", O_RDONLY)     = 3
[pid 12208] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12208] exit_group(0)               = ?
[pid 12208] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12208, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12209
./strace-static-x86_64: Process 12209 attached
[pid 12209] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12209] setpgid(0, 0)               = 0
[pid 12209] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12209] write(3, "1000", 4)         = 4
[pid 12209] close(3)                    = 0
[pid 12209] memfd_create("syzkaller", 0) = 3
[pid 12209] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12209] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12209] munmap(0x7fd990e3c000, 32768) = 0
[pid 12209] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12209] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12209] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12209] close(4)                    = 0
[pid 12209] close(3)                    = 0
[pid 12209] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12209] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12209] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12209] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12209] open("./bus", O_RDONLY)     = 3
[pid 12209] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12209] exit_group(0)               = ?
[pid 12209] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12209, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12210
./strace-static-x86_64: Process 12210 attached
[pid 12210] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12210] setpgid(0, 0)               = 0
[pid 12210] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12210] write(3, "1000", 4)         = 4
[pid 12210] close(3)                    = 0
[pid 12210] memfd_create("syzkaller", 0) = 3
[pid 12210] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12210] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12210] munmap(0x7fd990e3c000, 32768) = 0
[pid 12210] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12210] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12210] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12210] close(4)                    = 0
[pid 12210] close(3)                    = 0
[pid 12210] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12210] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12210] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12210] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12210] open("./bus", O_RDONLY)     = 3
[pid 12210] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12210] exit_group(0)               = ?
[pid 12210] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12210, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12211
./strace-static-x86_64: Process 12211 attached
[pid 12211] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12211] setpgid(0, 0)               = 0
[pid 12211] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12211] write(3, "1000", 4)         = 4
[pid 12211] close(3)                    = 0
[pid 12211] memfd_create("syzkaller", 0) = 3
[pid 12211] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12211] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12211] munmap(0x7fd990e3c000, 32768) = 0
[pid 12211] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12211] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12211] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12211] close(4)                    = 0
[pid 12211] close(3)                    = 0
[pid 12211] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12211] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12211] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12211] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12211] open("./bus", O_RDONLY)     = 3
[pid 12211] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12211] exit_group(0)               = ?
[pid 12211] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12211, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12212
./strace-static-x86_64: Process 12212 attached
[pid 12212] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12212] setpgid(0, 0)               = 0
[pid 12212] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12212] write(3, "1000", 4)         = 4
[pid 12212] close(3)                    = 0
[pid 12212] memfd_create("syzkaller", 0) = 3
[pid 12212] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12212] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12212] munmap(0x7fd990e3c000, 32768) = 0
[pid 12212] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12212] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12212] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12212] close(4)                    = 0
[pid 12212] close(3)                    = 0
[pid 12212] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12212] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12212] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12212] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12212] open("./bus", O_RDONLY)     = 3
[pid 12212] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12212] exit_group(0)               = ?
[pid 12212] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12212, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12213
./strace-static-x86_64: Process 12213 attached
[pid 12213] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12213] setpgid(0, 0)               = 0
[pid 12213] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12213] write(3, "1000", 4)         = 4
[pid 12213] close(3)                    = 0
[pid 12213] memfd_create("syzkaller", 0) = 3
[pid 12213] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12213] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12213] munmap(0x7fd990e3c000, 32768) = 0
[pid 12213] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12213] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12213] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12213] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12213] close(4)                    = 0
[pid 12213] close(3)                    = 0
[pid 12213] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12213] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12213] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12213] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12213] open("./bus", O_RDONLY)     = 3
[pid 12213] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12213] exit_group(0)               = ?
[pid 12213] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12213, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12214
./strace-static-x86_64: Process 12214 attached
[pid 12214] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12214] setpgid(0, 0)               = 0
[pid 12214] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12214] write(3, "1000", 4)         = 4
[pid 12214] close(3)                    = 0
[pid 12214] memfd_create("syzkaller", 0) = 3
[pid 12214] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12214] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12214] munmap(0x7fd990e3c000, 32768) = 0
[pid 12214] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12214] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12214] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12214] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12214] close(4)                    = 0
[pid 12214] close(3)                    = 0
[pid 12214] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12214] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12214] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12214] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12214] open("./bus", O_RDONLY)     = 3
[pid 12214] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12214] exit_group(0)               = ?
[pid 12214] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12214, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12215
./strace-static-x86_64: Process 12215 attached
[pid 12215] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12215] setpgid(0, 0)               = 0
[pid 12215] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12215] write(3, "1000", 4)         = 4
[pid 12215] close(3)                    = 0
[pid 12215] memfd_create("syzkaller", 0) = 3
[pid 12215] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12215] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12215] munmap(0x7fd990e3c000, 32768) = 0
[pid 12215] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12215] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12215] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12215] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12215] close(4)                    = 0
[pid 12215] close(3)                    = 0
[pid 12215] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12215] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12215] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12215] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12215] open("./bus", O_RDONLY)     = 3
[pid 12215] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12215] exit_group(0)               = ?
[pid 12215] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12215, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12216
./strace-static-x86_64: Process 12216 attached
[pid 12216] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12216] setpgid(0, 0)               = 0
[pid 12216] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12216] write(3, "1000", 4)         = 4
[pid 12216] close(3)                    = 0
[pid 12216] memfd_create("syzkaller", 0) = 3
[pid 12216] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12216] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12216] munmap(0x7fd990e3c000, 32768) = 0
[pid 12216] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12216] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12216] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12216] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12216] close(4)                    = 0
[pid 12216] close(3)                    = 0
[pid 12216] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12216] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12216] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12216] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12216] open("./bus", O_RDONLY)     = 3
[pid 12216] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12216] exit_group(0)               = ?
[pid 12216] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12216, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12217
./strace-static-x86_64: Process 12217 attached
[pid 12217] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12217] setpgid(0, 0)               = 0
[pid 12217] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12217] write(3, "1000", 4)         = 4
[pid 12217] close(3)                    = 0
[pid 12217] memfd_create("syzkaller", 0) = 3
[pid 12217] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12217] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12217] munmap(0x7fd990e3c000, 32768) = 0
[pid 12217] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12217] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12217] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12217] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12217] close(4)                    = 0
[pid 12217] close(3)                    = 0
[pid 12217] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12217] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12217] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12217] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12217] open("./bus", O_RDONLY)     = 3
[pid 12217] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12217] exit_group(0)               = ?
[pid 12217] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12217, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12218
./strace-static-x86_64: Process 12218 attached
[pid 12218] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12218] setpgid(0, 0)               = 0
[pid 12218] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12218] write(3, "1000", 4)         = 4
[pid 12218] close(3)                    = 0
[pid 12218] memfd_create("syzkaller", 0) = 3
[pid 12218] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12218] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12218] munmap(0x7fd990e3c000, 32768) = 0
[pid 12218] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12218] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12218] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12218] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12218] close(4)                    = 0
[pid 12218] close(3)                    = 0
[pid 12218] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12218] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12218] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12218] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12218] open("./bus", O_RDONLY)     = 3
[pid 12218] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12218] exit_group(0)               = ?
[pid 12218] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12218, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12219
./strace-static-x86_64: Process 12219 attached
[pid 12219] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12219] setpgid(0, 0)               = 0
[pid 12219] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12219] write(3, "1000", 4)         = 4
[pid 12219] close(3)                    = 0
[pid 12219] memfd_create("syzkaller", 0) = 3
[pid 12219] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12219] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12219] munmap(0x7fd990e3c000, 32768) = 0
[pid 12219] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12219] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12219] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12219] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12219] close(4)                    = 0
[pid 12219] close(3)                    = 0
[pid 12219] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12219] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12219] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12219] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12219] open("./bus", O_RDONLY)     = 3
[pid 12219] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12219] exit_group(0)               = ?
[pid 12219] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12219, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12220
./strace-static-x86_64: Process 12220 attached
[pid 12220] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12220] setpgid(0, 0)               = 0
[pid 12220] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12220] write(3, "1000", 4)         = 4
[pid 12220] close(3)                    = 0
[pid 12220] memfd_create("syzkaller", 0) = 3
[pid 12220] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12220] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12220] munmap(0x7fd990e3c000, 32768) = 0
[pid 12220] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12220] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12220] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12220] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12220] close(4)                    = 0
[pid 12220] close(3)                    = 0
[pid 12220] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12220] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12220] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12220] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12220] open("./bus", O_RDONLY)     = 3
[pid 12220] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12220] exit_group(0)               = ?
[pid 12220] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12220, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12221
./strace-static-x86_64: Process 12221 attached
[pid 12221] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12221] setpgid(0, 0)               = 0
[pid 12221] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12221] write(3, "1000", 4)         = 4
[pid 12221] close(3)                    = 0
[pid 12221] memfd_create("syzkaller", 0) = 3
[pid 12221] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12221] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12221] munmap(0x7fd990e3c000, 32768) = 0
[pid 12221] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12221] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12221] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12221] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12221] close(4)                    = 0
[pid 12221] close(3)                    = 0
[pid 12221] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12221] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12221] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12221] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12221] open("./bus", O_RDONLY)     = 3
[pid 12221] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12221] exit_group(0)               = ?
[pid 12221] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12221, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12222 attached
, child_tidptr=0x55555567f5d0) = 12222
[pid 12222] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12222] setpgid(0, 0)               = 0
[pid 12222] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12222] write(3, "1000", 4)         = 4
[pid 12222] close(3)                    = 0
[pid 12222] memfd_create("syzkaller", 0) = 3
[pid 12222] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12222] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12222] munmap(0x7fd990e3c000, 32768) = 0
[pid 12222] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12222] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12222] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12222] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12222] close(4)                    = 0
[pid 12222] close(3)                    = 0
[pid 12222] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12222] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12222] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12222] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12222] open("./bus", O_RDONLY)     = 3
[pid 12222] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12222] exit_group(0)               = ?
[pid 12222] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12222, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12223 attached
, child_tidptr=0x55555567f5d0) = 12223
[pid 12223] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12223] setpgid(0, 0)               = 0
[pid 12223] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12223] write(3, "1000", 4)         = 4
[pid 12223] close(3)                    = 0
[pid 12223] memfd_create("syzkaller", 0) = 3
[pid 12223] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12223] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12223] munmap(0x7fd990e3c000, 32768) = 0
[pid 12223] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12223] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12223] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12223] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12223] close(4)                    = 0
[pid 12223] close(3)                    = 0
[pid 12223] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12223] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12223] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12223] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12223] open("./bus", O_RDONLY)     = 3
[pid 12223] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12223] exit_group(0)               = ?
[pid 12223] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12223, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12224 attached
 <unfinished ...>
[pid 12224] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 12224
[pid 12224] <... prctl resumed>)        = 0
[pid 12224] setpgid(0, 0)               = 0
[pid 12224] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12224] write(3, "1000", 4)         = 4
[pid 12224] close(3)                    = 0
[pid 12224] memfd_create("syzkaller", 0) = 3
[pid 12224] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12224] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12224] munmap(0x7fd990e3c000, 32768) = 0
[pid 12224] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12224] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12224] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12224] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12224] close(4)                    = 0
[pid 12224] close(3)                    = 0
[pid 12224] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12224] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12224] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12224] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12224] open("./bus", O_RDONLY)     = 3
[pid 12224] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12224] exit_group(0)               = ?
[pid 12224] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12224, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12225
./strace-static-x86_64: Process 12225 attached
[pid 12225] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12225] setpgid(0, 0)               = 0
[pid 12225] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12225] write(3, "1000", 4)         = 4
[pid 12225] close(3)                    = 0
[pid 12225] memfd_create("syzkaller", 0) = 3
[pid 12225] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12225] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12225] munmap(0x7fd990e3c000, 32768) = 0
[pid 12225] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12225] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12225] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12225] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12225] close(4)                    = 0
[pid 12225] close(3)                    = 0
[pid 12225] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12225] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12225] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12225] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12225] open("./bus", O_RDONLY)     = 3
[pid 12225] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12225] exit_group(0)               = ?
[pid 12225] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12225, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12226 attached
, child_tidptr=0x55555567f5d0) = 12226
[pid 12226] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12226] setpgid(0, 0)               = 0
[pid 12226] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12226] write(3, "1000", 4)         = 4
[pid 12226] close(3)                    = 0
[pid 12226] memfd_create("syzkaller", 0) = 3
[pid 12226] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12226] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12226] munmap(0x7fd990e3c000, 32768) = 0
[pid 12226] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12226] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12226] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12226] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12226] close(4)                    = 0
[pid 12226] close(3)                    = 0
[pid 12226] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12226] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12226] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12226] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12226] open("./bus", O_RDONLY)     = 3
[pid 12226] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12226] exit_group(0)               = ?
[pid 12226] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12226, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12227
./strace-static-x86_64: Process 12227 attached
[pid 12227] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12227] setpgid(0, 0)               = 0
[pid 12227] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12227] write(3, "1000", 4)         = 4
[pid 12227] close(3)                    = 0
[pid 12227] memfd_create("syzkaller", 0) = 3
[pid 12227] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12227] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12227] munmap(0x7fd990e3c000, 32768) = 0
[pid 12227] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12227] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12227] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12227] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12227] close(4)                    = 0
[pid 12227] close(3)                    = 0
[pid 12227] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12227] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12227] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12227] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12227] open("./bus", O_RDONLY)     = 3
[pid 12227] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12227] exit_group(0)               = ?
[pid 12227] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12227, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12228
./strace-static-x86_64: Process 12228 attached
[pid 12228] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12228] setpgid(0, 0)               = 0
[pid 12228] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12228] write(3, "1000", 4)         = 4
[pid 12228] close(3)                    = 0
[pid 12228] memfd_create("syzkaller", 0) = 3
[pid 12228] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12228] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12228] munmap(0x7fd990e3c000, 32768) = 0
[pid 12228] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12228] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12228] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12228] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12228] close(4)                    = 0
[pid 12228] close(3)                    = 0
[pid 12228] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12228] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12228] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12228] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12228] open("./bus", O_RDONLY)     = 3
[pid 12228] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12228] exit_group(0)               = ?
[pid 12228] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12228, 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=0x55555567f5d0) = 12229
./strace-static-x86_64: Process 12229 attached
[pid 12229] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12229] setpgid(0, 0)               = 0
[pid 12229] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12229] write(3, "1000", 4)         = 4
[pid 12229] close(3)                    = 0
[pid 12229] memfd_create("syzkaller", 0) = 3
[pid 12229] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12229] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12229] munmap(0x7fd990e3c000, 32768) = 0
[pid 12229] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12229] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12229] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12229] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12229] close(4)                    = 0
[pid 12229] close(3)                    = 0
[pid 12229] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12229] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12229] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12229] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12229] open("./bus", O_RDONLY)     = 3
[pid 12229] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12229] exit_group(0)               = ?
[pid 12229] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12229, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12230
./strace-static-x86_64: Process 12230 attached
[pid 12230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12230] setpgid(0, 0)               = 0
[pid 12230] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12230] write(3, "1000", 4)         = 4
[pid 12230] close(3)                    = 0
[pid 12230] memfd_create("syzkaller", 0) = 3
[pid 12230] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12230] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12230] munmap(0x7fd990e3c000, 32768) = 0
[pid 12230] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12230] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12230] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12230] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12230] close(4)                    = 0
[pid 12230] close(3)                    = 0
[pid 12230] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12230] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12230] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12230] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12230] open("./bus", O_RDONLY)     = 3
[pid 12230] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12230] exit_group(0)               = ?
[pid 12230] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12230, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12231
./strace-static-x86_64: Process 12231 attached
[pid 12231] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12231] setpgid(0, 0)               = 0
[pid 12231] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12231] write(3, "1000", 4)         = 4
[pid 12231] close(3)                    = 0
[pid 12231] memfd_create("syzkaller", 0) = 3
[pid 12231] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12231] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12231] munmap(0x7fd990e3c000, 32768) = 0
[pid 12231] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12231] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12231] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12231] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12231] close(4)                    = 0
[pid 12231] close(3)                    = 0
[pid 12231] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12231] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12231] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12231] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12231] open("./bus", O_RDONLY)     = 3
[pid 12231] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12231] exit_group(0)               = ?
[pid 12231] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12231, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12232
./strace-static-x86_64: Process 12232 attached
[pid 12232] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12232] setpgid(0, 0)               = 0
[pid 12232] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12232] write(3, "1000", 4)         = 4
[pid 12232] close(3)                    = 0
[pid 12232] memfd_create("syzkaller", 0) = 3
[pid 12232] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12232] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12232] munmap(0x7fd990e3c000, 32768) = 0
[pid 12232] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12232] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12232] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12232] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12232] close(4)                    = 0
[pid 12232] close(3)                    = 0
[pid 12232] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12232] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12232] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12232] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12232] open("./bus", O_RDONLY)     = 3
[pid 12232] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12232] exit_group(0)               = ?
[pid 12232] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12232, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12233
./strace-static-x86_64: Process 12233 attached
[pid 12233] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12233] setpgid(0, 0)               = 0
[pid 12233] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12233] write(3, "1000", 4)         = 4
[pid 12233] close(3)                    = 0
[pid 12233] memfd_create("syzkaller", 0) = 3
[pid 12233] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12233] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12233] munmap(0x7fd990e3c000, 32768) = 0
[pid 12233] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12233] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12233] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12233] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12233] close(4)                    = 0
[pid 12233] close(3)                    = 0
[pid 12233] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12233] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12233] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12233] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12233] open("./bus", O_RDONLY)     = 3
[pid 12233] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12233] exit_group(0)               = ?
[pid 12233] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12233, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12234
./strace-static-x86_64: Process 12234 attached
[pid 12234] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12234] setpgid(0, 0)               = 0
[pid 12234] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12234] write(3, "1000", 4)         = 4
[pid 12234] close(3)                    = 0
[pid 12234] memfd_create("syzkaller", 0) = 3
[pid 12234] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12234] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12234] munmap(0x7fd990e3c000, 32768) = 0
[pid 12234] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12234] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12234] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12234] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12234] close(4)                    = 0
[pid 12234] close(3)                    = 0
[pid 12234] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12234] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12234] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12234] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12234] open("./bus", O_RDONLY)     = 3
[pid 12234] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12234] exit_group(0)               = ?
[pid 12234] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12234, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12235
./strace-static-x86_64: Process 12235 attached
[pid 12235] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12235] setpgid(0, 0)               = 0
[pid 12235] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12235] write(3, "1000", 4)         = 4
[pid 12235] close(3)                    = 0
[pid 12235] memfd_create("syzkaller", 0) = 3
[pid 12235] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12235] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12235] munmap(0x7fd990e3c000, 32768) = 0
[pid 12235] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12235] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12235] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12235] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12235] close(4)                    = 0
[pid 12235] close(3)                    = 0
[pid 12235] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12235] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12235] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12235] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12235] open("./bus", O_RDONLY)     = 3
[pid 12235] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12235] exit_group(0)               = ?
[pid 12235] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12235, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12236 attached
, child_tidptr=0x55555567f5d0) = 12236
[pid 12236] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12236] setpgid(0, 0)               = 0
[pid 12236] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12236] write(3, "1000", 4)         = 4
[pid 12236] close(3)                    = 0
[pid 12236] memfd_create("syzkaller", 0) = 3
[pid 12236] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12236] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12236] munmap(0x7fd990e3c000, 32768) = 0
[pid 12236] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12236] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12236] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12236] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12236] close(4)                    = 0
[pid 12236] close(3)                    = 0
[pid 12236] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12236] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12236] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12236] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12236] open("./bus", O_RDONLY)     = 3
[pid 12236] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12236] exit_group(0)               = ?
[pid 12236] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12236, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12237
./strace-static-x86_64: Process 12237 attached
[pid 12237] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12237] setpgid(0, 0)               = 0
[pid 12237] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12237] write(3, "1000", 4)         = 4
[pid 12237] close(3)                    = 0
[pid 12237] memfd_create("syzkaller", 0) = 3
[pid 12237] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12237] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12237] munmap(0x7fd990e3c000, 32768) = 0
[pid 12237] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12237] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12237] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12237] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12237] close(4)                    = 0
[pid 12237] close(3)                    = 0
[pid 12237] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12237] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12237] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12237] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12237] open("./bus", O_RDONLY)     = 3
[pid 12237] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12237] exit_group(0)               = ?
[pid 12237] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12237, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12238 attached
, child_tidptr=0x55555567f5d0) = 12238
[pid 12238] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12238] setpgid(0, 0)               = 0
[pid 12238] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12238] write(3, "1000", 4)         = 4
[pid 12238] close(3)                    = 0
[pid 12238] memfd_create("syzkaller", 0) = 3
[pid 12238] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12238] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12238] munmap(0x7fd990e3c000, 32768) = 0
[pid 12238] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12238] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12238] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12238] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12238] close(4)                    = 0
[pid 12238] close(3)                    = 0
[pid 12238] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12238] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12238] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12238] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12238] open("./bus", O_RDONLY)     = 3
[pid 12238] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12238] exit_group(0)               = ?
[pid 12238] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12238, 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=0x55555567f5d0) = 12239
./strace-static-x86_64: Process 12239 attached
[pid 12239] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12239] setpgid(0, 0)               = 0
[pid 12239] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12239] write(3, "1000", 4)         = 4
[pid 12239] close(3)                    = 0
[pid 12239] memfd_create("syzkaller", 0) = 3
[pid 12239] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12239] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12239] munmap(0x7fd990e3c000, 32768) = 0
[pid 12239] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12239] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12239] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12239] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12239] close(4)                    = 0
[pid 12239] close(3)                    = 0
[pid 12239] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12239] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12239] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12239] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12239] open("./bus", O_RDONLY)     = 3
[pid 12239] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12239] exit_group(0)               = ?
[pid 12239] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12239, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12240
./strace-static-x86_64: Process 12240 attached
[pid 12240] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12240] setpgid(0, 0)               = 0
[pid 12240] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12240] write(3, "1000", 4)         = 4
[pid 12240] close(3)                    = 0
[pid 12240] memfd_create("syzkaller", 0) = 3
[pid 12240] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12240] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12240] munmap(0x7fd990e3c000, 32768) = 0
[pid 12240] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12240] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12240] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12240] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12240] close(4)                    = 0
[pid 12240] close(3)                    = 0
[pid 12240] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12240] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12240] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12240] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12240] open("./bus", O_RDONLY)     = 3
[pid 12240] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12240] exit_group(0)               = ?
[pid 12240] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12240, 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=0x55555567f5d0) = 12241
./strace-static-x86_64: Process 12241 attached
[pid 12241] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12241] setpgid(0, 0)               = 0
[pid 12241] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12241] write(3, "1000", 4)         = 4
[pid 12241] close(3)                    = 0
[pid 12241] memfd_create("syzkaller", 0) = 3
[pid 12241] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12241] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12241] munmap(0x7fd990e3c000, 32768) = 0
[pid 12241] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12241] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12241] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12241] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12241] close(4)                    = 0
[pid 12241] close(3)                    = 0
[pid 12241] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12241] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12241] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12241] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12241] open("./bus", O_RDONLY)     = 3
[pid 12241] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12241] exit_group(0)               = ?
[pid 12241] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12241, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12242
./strace-static-x86_64: Process 12242 attached
[pid 12242] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12242] setpgid(0, 0)               = 0
[pid 12242] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12242] write(3, "1000", 4)         = 4
[pid 12242] close(3)                    = 0
[pid 12242] memfd_create("syzkaller", 0) = 3
[pid 12242] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12242] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12242] munmap(0x7fd990e3c000, 32768) = 0
[pid 12242] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12242] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12242] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12242] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12242] close(4)                    = 0
[pid 12242] close(3)                    = 0
[pid 12242] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12242] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12242] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12242] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12242] open("./bus", O_RDONLY)     = 3
[pid 12242] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12242] exit_group(0)               = ?
[pid 12242] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12242, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12243 attached
, child_tidptr=0x55555567f5d0) = 12243
[pid 12243] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12243] setpgid(0, 0)               = 0
[pid 12243] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12243] write(3, "1000", 4)         = 4
[pid 12243] close(3)                    = 0
[pid 12243] memfd_create("syzkaller", 0) = 3
[pid 12243] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12243] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12243] munmap(0x7fd990e3c000, 32768) = 0
[pid 12243] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12243] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12243] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12243] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12243] close(4)                    = 0
[pid 12243] close(3)                    = 0
[pid 12243] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12243] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12243] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12243] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12243] open("./bus", O_RDONLY)     = 3
[pid 12243] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12243] exit_group(0)               = ?
[pid 12243] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12243, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12244 attached
, child_tidptr=0x55555567f5d0) = 12244
[pid 12244] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12244] setpgid(0, 0)               = 0
[pid 12244] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12244] write(3, "1000", 4)         = 4
[pid 12244] close(3)                    = 0
[pid 12244] memfd_create("syzkaller", 0) = 3
[pid 12244] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12244] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12244] munmap(0x7fd990e3c000, 32768) = 0
[pid 12244] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12244] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12244] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12244] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12244] close(4)                    = 0
[pid 12244] close(3)                    = 0
[pid 12244] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12244] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12244] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12244] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12244] open("./bus", O_RDONLY)     = 3
[pid 12244] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12244] exit_group(0)               = ?
[pid 12244] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12244, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12245
./strace-static-x86_64: Process 12245 attached
[pid 12245] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12245] setpgid(0, 0)               = 0
[pid 12245] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12245] write(3, "1000", 4)         = 4
[pid 12245] close(3)                    = 0
[pid 12245] memfd_create("syzkaller", 0) = 3
[pid 12245] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12245] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12245] munmap(0x7fd990e3c000, 32768) = 0
[pid 12245] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12245] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12245] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12245] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12245] close(4)                    = 0
[pid 12245] close(3)                    = 0
[pid 12245] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12245] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12245] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12245] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12245] open("./bus", O_RDONLY)     = 3
[pid 12245] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12245] exit_group(0)               = ?
[pid 12245] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12245, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12246 attached
, child_tidptr=0x55555567f5d0) = 12246
[pid 12246] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12246] setpgid(0, 0)               = 0
[pid 12246] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12246] write(3, "1000", 4)         = 4
[pid 12246] close(3)                    = 0
[pid 12246] memfd_create("syzkaller", 0) = 3
[pid 12246] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12246] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12246] munmap(0x7fd990e3c000, 32768) = 0
[pid 12246] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12246] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12246] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12246] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12246] close(4)                    = 0
[pid 12246] close(3)                    = 0
[pid 12246] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12246] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12246] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12246] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12246] open("./bus", O_RDONLY)     = 3
[pid 12246] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12246] exit_group(0)               = ?
[pid 12246] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12246, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12247
./strace-static-x86_64: Process 12247 attached
[pid 12247] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12247] setpgid(0, 0)               = 0
[pid 12247] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12247] write(3, "1000", 4)         = 4
[pid 12247] close(3)                    = 0
[pid 12247] memfd_create("syzkaller", 0) = 3
[pid 12247] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12247] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12247] munmap(0x7fd990e3c000, 32768) = 0
[pid 12247] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12247] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12247] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12247] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12247] close(4)                    = 0
[pid 12247] close(3)                    = 0
[pid 12247] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12247] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12247] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12247] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12247] open("./bus", O_RDONLY)     = 3
[pid 12247] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12247] exit_group(0)               = ?
[pid 12247] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12247, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12248
./strace-static-x86_64: Process 12248 attached
[pid 12248] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12248] setpgid(0, 0)               = 0
[pid 12248] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12248] write(3, "1000", 4)         = 4
[pid 12248] close(3)                    = 0
[pid 12248] memfd_create("syzkaller", 0) = 3
[pid 12248] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12248] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12248] munmap(0x7fd990e3c000, 32768) = 0
[pid 12248] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12248] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12248] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12248] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12248] close(4)                    = 0
[pid 12248] close(3)                    = 0
[pid 12248] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12248] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12248] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12248] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12248] open("./bus", O_RDONLY)     = 3
[pid 12248] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12248] exit_group(0)               = ?
[pid 12248] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12248, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12249
./strace-static-x86_64: Process 12249 attached
[pid 12249] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12249] setpgid(0, 0)               = 0
[pid 12249] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12249] write(3, "1000", 4)         = 4
[pid 12249] close(3)                    = 0
[pid 12249] memfd_create("syzkaller", 0) = 3
[pid 12249] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12249] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12249] munmap(0x7fd990e3c000, 32768) = 0
[pid 12249] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12249] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12249] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12249] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12249] close(4)                    = 0
[pid 12249] close(3)                    = 0
[pid 12249] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12249] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12249] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12249] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12249] open("./bus", O_RDONLY)     = 3
[pid 12249] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12249] exit_group(0)               = ?
[pid 12249] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12249, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12250
./strace-static-x86_64: Process 12250 attached
[pid 12250] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12250] setpgid(0, 0)               = 0
[pid 12250] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12250] write(3, "1000", 4)         = 4
[pid 12250] close(3)                    = 0
[pid 12250] memfd_create("syzkaller", 0) = 3
[pid 12250] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12250] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12250] munmap(0x7fd990e3c000, 32768) = 0
[pid 12250] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12250] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12250] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12250] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12250] close(4)                    = 0
[pid 12250] close(3)                    = 0
[pid 12250] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12250] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12250] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12250] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12250] open("./bus", O_RDONLY)     = 3
[pid 12250] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12250] exit_group(0)               = ?
[pid 12250] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12250, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12251
./strace-static-x86_64: Process 12251 attached
[pid 12251] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12251] setpgid(0, 0)               = 0
[pid 12251] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12251] write(3, "1000", 4)         = 4
[pid 12251] close(3)                    = 0
[pid 12251] memfd_create("syzkaller", 0) = 3
[pid 12251] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12251] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12251] munmap(0x7fd990e3c000, 32768) = 0
[pid 12251] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12251] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12251] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12251] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12251] close(4)                    = 0
[pid 12251] close(3)                    = 0
[pid 12251] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12251] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12251] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12251] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12251] open("./bus", O_RDONLY)     = 3
[pid 12251] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12251] exit_group(0)               = ?
[pid 12251] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12251, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12252 attached
, child_tidptr=0x55555567f5d0) = 12252
[pid 12252] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12252] setpgid(0, 0)               = 0
[pid 12252] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12252] write(3, "1000", 4)         = 4
[pid 12252] close(3)                    = 0
[pid 12252] memfd_create("syzkaller", 0) = 3
[pid 12252] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12252] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12252] munmap(0x7fd990e3c000, 32768) = 0
[pid 12252] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12252] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12252] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12252] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12252] close(4)                    = 0
[pid 12252] close(3)                    = 0
[pid 12252] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12252] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12252] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12252] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12252] open("./bus", O_RDONLY)     = 3
[pid 12252] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12252] exit_group(0)               = ?
[pid 12252] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12252, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12253
./strace-static-x86_64: Process 12253 attached
[pid 12253] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12253] setpgid(0, 0)               = 0
[pid 12253] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12253] write(3, "1000", 4)         = 4
[pid 12253] close(3)                    = 0
[pid 12253] memfd_create("syzkaller", 0) = 3
[pid 12253] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12253] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12253] munmap(0x7fd990e3c000, 32768) = 0
[pid 12253] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12253] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12253] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12253] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12253] close(4)                    = 0
[pid 12253] close(3)                    = 0
[pid 12253] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12253] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12253] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12253] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12253] open("./bus", O_RDONLY)     = 3
[pid 12253] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12253] exit_group(0)               = ?
[pid 12253] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12253, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12254
./strace-static-x86_64: Process 12254 attached
[pid 12254] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12254] setpgid(0, 0)               = 0
[pid 12254] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12254] write(3, "1000", 4)         = 4
[pid 12254] close(3)                    = 0
[pid 12254] memfd_create("syzkaller", 0) = 3
[pid 12254] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12254] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12254] munmap(0x7fd990e3c000, 32768) = 0
[pid 12254] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12254] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12254] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12254] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12254] close(4)                    = 0
[pid 12254] close(3)                    = 0
[pid 12254] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12254] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12254] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12254] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12254] open("./bus", O_RDONLY)     = 3
[pid 12254] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12254] exit_group(0)               = ?
[pid 12254] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12254, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12255
./strace-static-x86_64: Process 12255 attached
[pid 12255] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12255] setpgid(0, 0)               = 0
[pid 12255] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12255] write(3, "1000", 4)         = 4
[pid 12255] close(3)                    = 0
[pid 12255] memfd_create("syzkaller", 0) = 3
[pid 12255] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12255] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12255] munmap(0x7fd990e3c000, 32768) = 0
[pid 12255] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12255] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12255] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12255] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12255] close(4)                    = 0
[pid 12255] close(3)                    = 0
[pid 12255] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12255] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12255] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12255] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12255] open("./bus", O_RDONLY)     = 3
[pid 12255] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12255] exit_group(0)               = ?
[pid 12255] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12255, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12256 attached
, child_tidptr=0x55555567f5d0) = 12256
[pid 12256] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12256] setpgid(0, 0)               = 0
[pid 12256] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12256] write(3, "1000", 4)         = 4
[pid 12256] close(3)                    = 0
[pid 12256] memfd_create("syzkaller", 0) = 3
[pid 12256] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12256] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12256] munmap(0x7fd990e3c000, 32768) = 0
[pid 12256] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12256] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12256] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12256] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12256] close(4)                    = 0
[pid 12256] close(3)                    = 0
[pid 12256] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12256] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12256] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12256] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12256] open("./bus", O_RDONLY)     = 3
[pid 12256] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12256] exit_group(0)               = ?
[pid 12256] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12256, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12257 attached
, child_tidptr=0x55555567f5d0) = 12257
[pid 12257] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12257] setpgid(0, 0)               = 0
[pid 12257] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12257] write(3, "1000", 4)         = 4
[pid 12257] close(3)                    = 0
[pid 12257] memfd_create("syzkaller", 0) = 3
[pid 12257] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12257] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12257] munmap(0x7fd990e3c000, 32768) = 0
[pid 12257] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12257] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12257] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12257] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12257] close(4)                    = 0
[pid 12257] close(3)                    = 0
[pid 12257] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12257] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12257] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12257] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12257] open("./bus", O_RDONLY)     = 3
[pid 12257] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12257] exit_group(0)               = ?
[pid 12257] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12257, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12258
./strace-static-x86_64: Process 12258 attached
[pid 12258] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12258] setpgid(0, 0)               = 0
[pid 12258] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12258] write(3, "1000", 4)         = 4
[pid 12258] close(3)                    = 0
[pid 12258] memfd_create("syzkaller", 0) = 3
[pid 12258] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12258] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12258] munmap(0x7fd990e3c000, 32768) = 0
[pid 12258] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12258] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12258] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12258] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12258] close(4)                    = 0
[pid 12258] close(3)                    = 0
[pid 12258] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12258] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12258] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12258] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12258] open("./bus", O_RDONLY)     = 3
[pid 12258] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12258] exit_group(0)               = ?
[pid 12258] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12258, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12259
./strace-static-x86_64: Process 12259 attached
[pid 12259] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12259] setpgid(0, 0)               = 0
[pid 12259] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12259] write(3, "1000", 4)         = 4
[pid 12259] close(3)                    = 0
[pid 12259] memfd_create("syzkaller", 0) = 3
[pid 12259] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12259] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12259] munmap(0x7fd990e3c000, 32768) = 0
[pid 12259] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12259] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12259] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12259] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12259] close(4)                    = 0
[pid 12259] close(3)                    = 0
[pid 12259] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12259] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12259] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12259] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12259] open("./bus", O_RDONLY)     = 3
[pid 12259] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12259] exit_group(0)               = ?
[pid 12259] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12259, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12260
./strace-static-x86_64: Process 12260 attached
[pid 12260] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12260] setpgid(0, 0)               = 0
[pid 12260] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12260] write(3, "1000", 4)         = 4
[pid 12260] close(3)                    = 0
[pid 12260] memfd_create("syzkaller", 0) = 3
[pid 12260] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12260] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12260] munmap(0x7fd990e3c000, 32768) = 0
[pid 12260] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12260] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12260] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12260] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12260] close(4)                    = 0
[pid 12260] close(3)                    = 0
[pid 12260] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12260] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12260] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12260] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12260] open("./bus", O_RDONLY)     = 3
[pid 12260] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12260] exit_group(0)               = ?
[pid 12260] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12260, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12261
./strace-static-x86_64: Process 12261 attached
[pid 12261] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12261] setpgid(0, 0)               = 0
[pid 12261] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12261] write(3, "1000", 4)         = 4
[pid 12261] close(3)                    = 0
[pid 12261] memfd_create("syzkaller", 0) = 3
[pid 12261] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12261] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12261] munmap(0x7fd990e3c000, 32768) = 0
[pid 12261] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12261] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12261] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12261] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12261] close(4)                    = 0
[pid 12261] close(3)                    = 0
[pid 12261] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12261] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12261] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12261] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12261] open("./bus", O_RDONLY)     = 3
[pid 12261] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12261] exit_group(0)               = ?
[pid 12261] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12261, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12262
./strace-static-x86_64: Process 12262 attached
[pid 12262] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12262] setpgid(0, 0)               = 0
[pid 12262] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12262] write(3, "1000", 4)         = 4
[pid 12262] close(3)                    = 0
[pid 12262] memfd_create("syzkaller", 0) = 3
[pid 12262] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12262] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12262] munmap(0x7fd990e3c000, 32768) = 0
[pid 12262] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12262] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12262] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12262] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12262] close(4)                    = 0
[pid 12262] close(3)                    = 0
[pid 12262] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12262] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12262] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12262] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12262] open("./bus", O_RDONLY)     = 3
[pid 12262] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12262] exit_group(0)               = ?
[pid 12262] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12262, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12263
./strace-static-x86_64: Process 12263 attached
[pid 12263] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12263] setpgid(0, 0)               = 0
[pid 12263] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12263] write(3, "1000", 4)         = 4
[pid 12263] close(3)                    = 0
[pid 12263] memfd_create("syzkaller", 0) = 3
[pid 12263] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12263] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12263] munmap(0x7fd990e3c000, 32768) = 0
[pid 12263] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12263] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12263] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12263] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12263] close(4)                    = 0
[pid 12263] close(3)                    = 0
[pid 12263] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12263] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12263] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12263] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12263] open("./bus", O_RDONLY)     = 3
[pid 12263] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12263] exit_group(0)               = ?
[pid 12263] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12263, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12264 attached
, child_tidptr=0x55555567f5d0) = 12264
[pid 12264] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12264] setpgid(0, 0)               = 0
[pid 12264] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12264] write(3, "1000", 4)         = 4
[pid 12264] close(3)                    = 0
[pid 12264] memfd_create("syzkaller", 0) = 3
[pid 12264] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12264] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12264] munmap(0x7fd990e3c000, 32768) = 0
[pid 12264] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12264] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12264] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12264] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12264] close(4)                    = 0
[pid 12264] close(3)                    = 0
[pid 12264] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12264] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12264] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12264] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12264] open("./bus", O_RDONLY)     = 3
[pid 12264] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12264] exit_group(0)               = ?
[pid 12264] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12264, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12265 attached
, child_tidptr=0x55555567f5d0) = 12265
[pid 12265] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12265] setpgid(0, 0)               = 0
[pid 12265] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12265] write(3, "1000", 4)         = 4
[pid 12265] close(3)                    = 0
[pid 12265] memfd_create("syzkaller", 0) = 3
[pid 12265] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12265] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12265] munmap(0x7fd990e3c000, 32768) = 0
[pid 12265] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12265] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12265] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12265] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12265] close(4)                    = 0
[pid 12265] close(3)                    = 0
[pid 12265] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12265] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12265] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12265] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12265] open("./bus", O_RDONLY)     = 3
[pid 12265] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12265] exit_group(0)               = ?
[pid 12265] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12265, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12266
./strace-static-x86_64: Process 12266 attached
[pid 12266] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12266] setpgid(0, 0)               = 0
[pid 12266] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12266] write(3, "1000", 4)         = 4
[pid 12266] close(3)                    = 0
[pid 12266] memfd_create("syzkaller", 0) = 3
[pid 12266] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12266] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12266] munmap(0x7fd990e3c000, 32768) = 0
[pid 12266] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12266] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12266] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12266] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12266] close(4)                    = 0
[pid 12266] close(3)                    = 0
[pid 12266] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12266] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12266] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12266] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12266] open("./bus", O_RDONLY)     = 3
[pid 12266] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12266] exit_group(0)               = ?
[pid 12266] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12266, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12267
./strace-static-x86_64: Process 12267 attached
[pid 12267] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12267] setpgid(0, 0)               = 0
[pid 12267] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12267] write(3, "1000", 4)         = 4
[pid 12267] close(3)                    = 0
[pid 12267] memfd_create("syzkaller", 0) = 3
[pid 12267] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12267] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12267] munmap(0x7fd990e3c000, 32768) = 0
[pid 12267] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12267] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12267] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12267] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12267] close(4)                    = 0
[pid 12267] close(3)                    = 0
[pid 12267] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12267] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12267] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12267] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12267] open("./bus", O_RDONLY)     = 3
[pid 12267] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12267] exit_group(0)               = ?
[pid 12267] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12267, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12268
./strace-static-x86_64: Process 12268 attached
[pid 12268] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12268] setpgid(0, 0)               = 0
[pid 12268] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12268] write(3, "1000", 4)         = 4
[pid 12268] close(3)                    = 0
[pid 12268] memfd_create("syzkaller", 0) = 3
[pid 12268] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12268] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12268] munmap(0x7fd990e3c000, 32768) = 0
[pid 12268] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12268] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12268] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12268] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12268] close(4)                    = 0
[pid 12268] close(3)                    = 0
[pid 12268] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12268] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12268] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12268] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12268] open("./bus", O_RDONLY)     = 3
[pid 12268] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12268] exit_group(0)               = ?
[pid 12268] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12268, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12269 attached
, child_tidptr=0x55555567f5d0) = 12269
[pid 12269] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12269] setpgid(0, 0)               = 0
[pid 12269] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12269] write(3, "1000", 4)         = 4
[pid 12269] close(3)                    = 0
[pid 12269] memfd_create("syzkaller", 0) = 3
[pid 12269] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12269] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12269] munmap(0x7fd990e3c000, 32768) = 0
[pid 12269] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12269] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12269] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12269] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12269] close(4)                    = 0
[pid 12269] close(3)                    = 0
[pid 12269] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12269] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12269] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12269] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12269] open("./bus", O_RDONLY)     = 3
[pid 12269] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12269] exit_group(0)               = ?
[pid 12269] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12269, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12270
./strace-static-x86_64: Process 12270 attached
[pid 12270] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12270] setpgid(0, 0)               = 0
[pid 12270] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12270] write(3, "1000", 4)         = 4
[pid 12270] close(3)                    = 0
[pid 12270] memfd_create("syzkaller", 0) = 3
[pid 12270] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12270] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12270] munmap(0x7fd990e3c000, 32768) = 0
[pid 12270] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12270] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12270] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12270] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12270] close(4)                    = 0
[pid 12270] close(3)                    = 0
[pid 12270] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12270] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12270] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12270] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12270] open("./bus", O_RDONLY)     = 3
[pid 12270] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12270] exit_group(0)               = ?
[pid 12270] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12270, 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=0x55555567f5d0) = 12271
./strace-static-x86_64: Process 12271 attached
[pid 12271] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12271] setpgid(0, 0)               = 0
[pid 12271] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12271] write(3, "1000", 4)         = 4
[pid 12271] close(3)                    = 0
[pid 12271] memfd_create("syzkaller", 0) = 3
[pid 12271] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12271] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12271] munmap(0x7fd990e3c000, 32768) = 0
[pid 12271] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12271] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12271] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12271] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12271] close(4)                    = 0
[pid 12271] close(3)                    = 0
[pid 12271] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12271] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12271] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12271] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12271] open("./bus", O_RDONLY)     = 3
[pid 12271] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12271] exit_group(0)               = ?
[pid 12271] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12271, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12272 attached
, child_tidptr=0x55555567f5d0) = 12272
[pid 12272] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12272] setpgid(0, 0)               = 0
[pid 12272] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12272] write(3, "1000", 4)         = 4
[pid 12272] close(3)                    = 0
[pid 12272] memfd_create("syzkaller", 0) = 3
[pid 12272] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12272] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12272] munmap(0x7fd990e3c000, 32768) = 0
[pid 12272] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12272] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12272] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12272] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12272] close(4)                    = 0
[pid 12272] close(3)                    = 0
[pid 12272] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12272] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12272] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12272] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12272] open("./bus", O_RDONLY)     = 3
[pid 12272] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12272] exit_group(0)               = ?
[pid 12272] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12272, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12273 attached
, child_tidptr=0x55555567f5d0) = 12273
[pid 12273] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12273] setpgid(0, 0)               = 0
[pid 12273] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12273] write(3, "1000", 4)         = 4
[pid 12273] close(3)                    = 0
[pid 12273] memfd_create("syzkaller", 0) = 3
[pid 12273] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12273] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12273] munmap(0x7fd990e3c000, 32768) = 0
[pid 12273] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12273] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12273] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12273] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12273] close(4)                    = 0
[pid 12273] close(3)                    = 0
[pid 12273] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12273] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12273] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12273] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12273] open("./bus", O_RDONLY)     = 3
[pid 12273] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12273] exit_group(0)               = ?
[pid 12273] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12273, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12274
./strace-static-x86_64: Process 12274 attached
[pid 12274] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12274] setpgid(0, 0)               = 0
[pid 12274] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12274] write(3, "1000", 4)         = 4
[pid 12274] close(3)                    = 0
[pid 12274] memfd_create("syzkaller", 0) = 3
[pid 12274] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12274] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12274] munmap(0x7fd990e3c000, 32768) = 0
[pid 12274] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12274] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12274] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12274] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12274] close(4)                    = 0
[pid 12274] close(3)                    = 0
[pid 12274] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12274] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12274] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12274] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12274] open("./bus", O_RDONLY)     = 3
[pid 12274] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12274] exit_group(0)               = ?
[pid 12274] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12274, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12275 attached
, child_tidptr=0x55555567f5d0) = 12275
[pid 12275] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12275] setpgid(0, 0)               = 0
[pid 12275] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12275] write(3, "1000", 4)         = 4
[pid 12275] close(3)                    = 0
[pid 12275] memfd_create("syzkaller", 0) = 3
[pid 12275] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12275] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12275] munmap(0x7fd990e3c000, 32768) = 0
[pid 12275] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12275] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12275] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12275] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12275] close(4)                    = 0
[pid 12275] close(3)                    = 0
[pid 12275] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12275] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12275] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12275] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12275] open("./bus", O_RDONLY)     = 3
[pid 12275] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12275] exit_group(0)               = ?
[pid 12275] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12275, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12276
./strace-static-x86_64: Process 12276 attached
[pid 12276] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12276] setpgid(0, 0)               = 0
[pid 12276] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12276] write(3, "1000", 4)         = 4
[pid 12276] close(3)                    = 0
[pid 12276] memfd_create("syzkaller", 0) = 3
[pid 12276] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12276] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12276] munmap(0x7fd990e3c000, 32768) = 0
[pid 12276] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12276] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12276] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12276] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12276] close(4)                    = 0
[pid 12276] close(3)                    = 0
[pid 12276] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12276] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12276] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12276] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12276] open("./bus", O_RDONLY)     = 3
[pid 12276] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12276] exit_group(0)               = ?
[pid 12276] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12276, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12277 attached
, child_tidptr=0x55555567f5d0) = 12277
[pid 12277] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12277] setpgid(0, 0)               = 0
[pid 12277] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12277] write(3, "1000", 4)         = 4
[pid 12277] close(3)                    = 0
[pid 12277] memfd_create("syzkaller", 0) = 3
[pid 12277] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12277] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12277] munmap(0x7fd990e3c000, 32768) = 0
[pid 12277] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12277] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12277] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12277] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12277] close(4)                    = 0
[pid 12277] close(3)                    = 0
[pid 12277] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12277] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12277] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12277] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12277] open("./bus", O_RDONLY)     = 3
[pid 12277] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12277] exit_group(0)               = ?
[pid 12277] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12277, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12278
./strace-static-x86_64: Process 12278 attached
[pid 12278] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12278] setpgid(0, 0)               = 0
[pid 12278] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12278] write(3, "1000", 4)         = 4
[pid 12278] close(3)                    = 0
[pid 12278] memfd_create("syzkaller", 0) = 3
[pid 12278] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12278] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12278] munmap(0x7fd990e3c000, 32768) = 0
[pid 12278] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12278] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12278] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12278] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12278] close(4)                    = 0
[pid 12278] close(3)                    = 0
[pid 12278] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12278] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12278] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12278] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12278] open("./bus", O_RDONLY)     = 3
[pid 12278] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12278] exit_group(0)               = ?
[pid 12278] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12278, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12279 attached
, child_tidptr=0x55555567f5d0) = 12279
[pid 12279] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12279] setpgid(0, 0)               = 0
[pid 12279] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12279] write(3, "1000", 4)         = 4
[pid 12279] close(3)                    = 0
[pid 12279] memfd_create("syzkaller", 0) = 3
[pid 12279] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12279] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12279] munmap(0x7fd990e3c000, 32768) = 0
[pid 12279] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12279] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12279] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12279] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12279] close(4)                    = 0
[pid 12279] close(3)                    = 0
[pid 12279] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12279] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12279] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12279] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12279] open("./bus", O_RDONLY)     = 3
[pid 12279] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12279] exit_group(0)               = ?
[pid 12279] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12279, 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=0x55555567f5d0) = 12280
./strace-static-x86_64: Process 12280 attached
[pid 12280] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12280] setpgid(0, 0)               = 0
[pid 12280] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12280] write(3, "1000", 4)         = 4
[pid 12280] close(3)                    = 0
[pid 12280] memfd_create("syzkaller", 0) = 3
[pid 12280] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12280] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12280] munmap(0x7fd990e3c000, 32768) = 0
[pid 12280] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12280] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12280] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12280] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12280] close(4)                    = 0
[pid 12280] close(3)                    = 0
[pid 12280] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12280] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12280] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12280] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12280] open("./bus", O_RDONLY)     = 3
[pid 12280] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12280] exit_group(0)               = ?
[pid 12280] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12280, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12281
./strace-static-x86_64: Process 12281 attached
[pid 12281] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12281] setpgid(0, 0)               = 0
[pid 12281] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12281] write(3, "1000", 4)         = 4
[pid 12281] close(3)                    = 0
[pid 12281] memfd_create("syzkaller", 0) = 3
[pid 12281] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12281] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12281] munmap(0x7fd990e3c000, 32768) = 0
[pid 12281] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12281] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12281] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12281] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12281] close(4)                    = 0
[pid 12281] close(3)                    = 0
[pid 12281] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12281] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12281] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12281] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12281] open("./bus", O_RDONLY)     = 3
[pid 12281] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12281] exit_group(0)               = ?
[pid 12281] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12281, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12282
./strace-static-x86_64: Process 12282 attached
[pid 12282] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12282] setpgid(0, 0)               = 0
[pid 12282] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12282] write(3, "1000", 4)         = 4
[pid 12282] close(3)                    = 0
[pid 12282] memfd_create("syzkaller", 0) = 3
[pid 12282] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12282] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12282] munmap(0x7fd990e3c000, 32768) = 0
[pid 12282] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12282] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12282] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12282] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12282] close(4)                    = 0
[pid 12282] close(3)                    = 0
[pid 12282] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12282] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12282] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12282] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12282] open("./bus", O_RDONLY)     = 3
[pid 12282] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12282] exit_group(0)               = ?
[pid 12282] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12282, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12283
./strace-static-x86_64: Process 12283 attached
[pid 12283] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12283] setpgid(0, 0)               = 0
[pid 12283] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12283] write(3, "1000", 4)         = 4
[pid 12283] close(3)                    = 0
[pid 12283] memfd_create("syzkaller", 0) = 3
[pid 12283] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12283] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12283] munmap(0x7fd990e3c000, 32768) = 0
[pid 12283] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12283] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12283] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12283] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12283] close(4)                    = 0
[pid 12283] close(3)                    = 0
[pid 12283] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12283] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12283] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12283] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12283] open("./bus", O_RDONLY)     = 3
[pid 12283] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12283] exit_group(0)               = ?
[pid 12283] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12283, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12284
./strace-static-x86_64: Process 12284 attached
[pid 12284] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12284] setpgid(0, 0)               = 0
[pid 12284] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12284] write(3, "1000", 4)         = 4
[pid 12284] close(3)                    = 0
[pid 12284] memfd_create("syzkaller", 0) = 3
[pid 12284] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12284] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12284] munmap(0x7fd990e3c000, 32768) = 0
[pid 12284] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12284] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12284] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12284] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12284] close(4)                    = 0
[pid 12284] close(3)                    = 0
[pid 12284] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12284] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12284] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12284] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12284] open("./bus", O_RDONLY)     = 3
[pid 12284] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12284] exit_group(0)               = ?
[pid 12284] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12284, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12285
./strace-static-x86_64: Process 12285 attached
[pid 12285] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12285] setpgid(0, 0)               = 0
[pid 12285] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12285] write(3, "1000", 4)         = 4
[pid 12285] close(3)                    = 0
[pid 12285] memfd_create("syzkaller", 0) = 3
[pid 12285] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12285] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12285] munmap(0x7fd990e3c000, 32768) = 0
[pid 12285] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12285] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12285] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12285] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12285] close(4)                    = 0
[pid 12285] close(3)                    = 0
[pid 12285] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12285] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12285] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12285] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12285] open("./bus", O_RDONLY)     = 3
[pid 12285] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12285] exit_group(0)               = ?
[pid 12285] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12285, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12286
./strace-static-x86_64: Process 12286 attached
[pid 12286] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12286] setpgid(0, 0)               = 0
[pid 12286] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12286] write(3, "1000", 4)         = 4
[pid 12286] close(3)                    = 0
[pid 12286] memfd_create("syzkaller", 0) = 3
[pid 12286] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12286] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12286] munmap(0x7fd990e3c000, 32768) = 0
[pid 12286] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12286] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12286] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12286] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12286] close(4)                    = 0
[pid 12286] close(3)                    = 0
[pid 12286] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12286] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12286] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12286] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12286] open("./bus", O_RDONLY)     = 3
[pid 12286] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12286] exit_group(0)               = ?
[pid 12286] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12286, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12287 attached
, child_tidptr=0x55555567f5d0) = 12287
[pid 12287] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12287] setpgid(0, 0)               = 0
[pid 12287] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12287] write(3, "1000", 4)         = 4
[pid 12287] close(3)                    = 0
[pid 12287] memfd_create("syzkaller", 0) = 3
[pid 12287] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12287] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12287] munmap(0x7fd990e3c000, 32768) = 0
[pid 12287] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12287] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12287] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12287] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12287] close(4)                    = 0
[pid 12287] close(3)                    = 0
[pid 12287] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12287] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12287] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12287] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12287] open("./bus", O_RDONLY)     = 3
[pid 12287] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12287] exit_group(0)               = ?
[pid 12287] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12287, 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 12288 attached
, child_tidptr=0x55555567f5d0) = 12288
[pid 12288] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12288] setpgid(0, 0)               = 0
[pid 12288] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12288] write(3, "1000", 4)         = 4
[pid 12288] close(3)                    = 0
[pid 12288] memfd_create("syzkaller", 0) = 3
[pid 12288] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12288] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12288] munmap(0x7fd990e3c000, 32768) = 0
[pid 12288] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12288] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12288] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12288] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12288] close(4)                    = 0
[pid 12288] close(3)                    = 0
[pid 12288] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12288] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12288] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12288] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12288] open("./bus", O_RDONLY)     = 3
[pid 12288] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12288] exit_group(0)               = ?
[pid 12288] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12288, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12289 attached
, child_tidptr=0x55555567f5d0) = 12289
[pid 12289] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12289] setpgid(0, 0)               = 0
[pid 12289] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12289] write(3, "1000", 4)         = 4
[pid 12289] close(3)                    = 0
[pid 12289] memfd_create("syzkaller", 0) = 3
[pid 12289] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12289] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12289] munmap(0x7fd990e3c000, 32768) = 0
[pid 12289] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12289] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12289] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12289] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12289] close(4)                    = 0
[pid 12289] close(3)                    = 0
[pid 12289] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12289] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12289] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12289] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12289] open("./bus", O_RDONLY)     = 3
[pid 12289] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12289] exit_group(0)               = ?
[pid 12289] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12289, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12290
./strace-static-x86_64: Process 12290 attached
[pid 12290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12290] setpgid(0, 0)               = 0
[pid 12290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12290] write(3, "1000", 4)         = 4
[pid 12290] close(3)                    = 0
[pid 12290] memfd_create("syzkaller", 0) = 3
[pid 12290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12290] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12290] munmap(0x7fd990e3c000, 32768) = 0
[pid 12290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12290] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12290] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12290] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12290] close(4)                    = 0
[pid 12290] close(3)                    = 0
[pid 12290] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12290] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12290] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12290] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12290] open("./bus", O_RDONLY)     = 3
[pid 12290] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12290] exit_group(0)               = ?
[pid 12290] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12290, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12291 attached
, child_tidptr=0x55555567f5d0) = 12291
[pid 12291] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12291] setpgid(0, 0)               = 0
[pid 12291] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12291] write(3, "1000", 4)         = 4
[pid 12291] close(3)                    = 0
[pid 12291] memfd_create("syzkaller", 0) = 3
[pid 12291] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12291] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12291] munmap(0x7fd990e3c000, 32768) = 0
[pid 12291] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12291] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12291] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12291] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12291] close(4)                    = 0
[pid 12291] close(3)                    = 0
[pid 12291] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12291] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12291] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12291] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12291] open("./bus", O_RDONLY)     = 3
[pid 12291] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12291] exit_group(0)               = ?
[pid 12291] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12291, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12292
./strace-static-x86_64: Process 12292 attached
[pid 12292] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12292] setpgid(0, 0)               = 0
[pid 12292] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12292] write(3, "1000", 4)         = 4
[pid 12292] close(3)                    = 0
[pid 12292] memfd_create("syzkaller", 0) = 3
[pid 12292] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12292] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12292] munmap(0x7fd990e3c000, 32768) = 0
[pid 12292] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12292] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12292] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12292] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12292] close(4)                    = 0
[pid 12292] close(3)                    = 0
[pid 12292] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12292] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12292] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12292] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12292] open("./bus", O_RDONLY)     = 3
[pid 12292] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12292] exit_group(0)               = ?
[pid 12292] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12292, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12293
./strace-static-x86_64: Process 12293 attached
[pid 12293] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12293] setpgid(0, 0)               = 0
[pid 12293] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12293] write(3, "1000", 4)         = 4
[pid 12293] close(3)                    = 0
[pid 12293] memfd_create("syzkaller", 0) = 3
[pid 12293] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12293] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12293] munmap(0x7fd990e3c000, 32768) = 0
[pid 12293] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12293] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12293] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12293] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12293] close(4)                    = 0
[pid 12293] close(3)                    = 0
[pid 12293] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12293] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12293] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12293] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12293] open("./bus", O_RDONLY)     = 3
[pid 12293] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12293] exit_group(0)               = ?
[pid 12293] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12293, 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 12294 attached
, child_tidptr=0x55555567f5d0) = 12294
[pid 12294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12294] setpgid(0, 0)               = 0
[pid 12294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12294] write(3, "1000", 4)         = 4
[pid 12294] close(3)                    = 0
[pid 12294] memfd_create("syzkaller", 0) = 3
[pid 12294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12294] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12294] munmap(0x7fd990e3c000, 32768) = 0
[pid 12294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12294] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12294] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12294] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12294] close(4)                    = 0
[pid 12294] close(3)                    = 0
[pid 12294] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12294] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12294] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12294] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12294] open("./bus", O_RDONLY)     = 3
[pid 12294] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12294] exit_group(0)               = ?
[pid 12294] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12294, 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=0x55555567f5d0) = 12295
./strace-static-x86_64: Process 12295 attached
[pid 12295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12295] setpgid(0, 0)               = 0
[pid 12295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12295] write(3, "1000", 4)         = 4
[pid 12295] close(3)                    = 0
[pid 12295] memfd_create("syzkaller", 0) = 3
[pid 12295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12295] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12295] munmap(0x7fd990e3c000, 32768) = 0
[pid 12295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12295] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12295] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12295] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12295] close(4)                    = 0
[pid 12295] close(3)                    = 0
[pid 12295] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12295] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12295] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12295] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12295] open("./bus", O_RDONLY)     = 3
[pid 12295] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12295] exit_group(0)               = ?
[pid 12295] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12295, 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=0x55555567f5d0) = 12296
./strace-static-x86_64: Process 12296 attached
[pid 12296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12296] setpgid(0, 0)               = 0
[pid 12296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12296] write(3, "1000", 4)         = 4
[pid 12296] close(3)                    = 0
[pid 12296] memfd_create("syzkaller", 0) = 3
[pid 12296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12296] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12296] munmap(0x7fd990e3c000, 32768) = 0
[pid 12296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12296] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12296] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12296] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12296] close(4)                    = 0
[pid 12296] close(3)                    = 0
[pid 12296] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12296] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12296] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12296] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12296] open("./bus", O_RDONLY)     = 3
[pid 12296] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12296] exit_group(0)               = ?
[pid 12296] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12296, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12297
./strace-static-x86_64: Process 12297 attached
[pid 12297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12297] setpgid(0, 0)               = 0
[pid 12297] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12297] write(3, "1000", 4)         = 4
[pid 12297] close(3)                    = 0
[pid 12297] memfd_create("syzkaller", 0) = 3
[pid 12297] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12297] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12297] munmap(0x7fd990e3c000, 32768) = 0
[pid 12297] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12297] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12297] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12297] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12297] close(4)                    = 0
[pid 12297] close(3)                    = 0
[pid 12297] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12297] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12297] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12297] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12297] open("./bus", O_RDONLY)     = 3
[pid 12297] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12297] exit_group(0)               = ?
[pid 12297] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12297, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12298
./strace-static-x86_64: Process 12298 attached
[pid 12298] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12298] setpgid(0, 0)               = 0
[pid 12298] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12298] write(3, "1000", 4)         = 4
[pid 12298] close(3)                    = 0
[pid 12298] memfd_create("syzkaller", 0) = 3
[pid 12298] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12298] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12298] munmap(0x7fd990e3c000, 32768) = 0
[pid 12298] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12298] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12298] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12298] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12298] close(4)                    = 0
[pid 12298] close(3)                    = 0
[pid 12298] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12298] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12298] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12298] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12298] open("./bus", O_RDONLY)     = 3
[pid 12298] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12298] exit_group(0)               = ?
[pid 12298] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12298, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12299
./strace-static-x86_64: Process 12299 attached
[pid 12299] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12299] setpgid(0, 0)               = 0
[pid 12299] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12299] write(3, "1000", 4)         = 4
[pid 12299] close(3)                    = 0
[pid 12299] memfd_create("syzkaller", 0) = 3
[pid 12299] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12299] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12299] munmap(0x7fd990e3c000, 32768) = 0
[pid 12299] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12299] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12299] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12299] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12299] close(4)                    = 0
[pid 12299] close(3)                    = 0
[pid 12299] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12299] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12299] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12299] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12299] open("./bus", O_RDONLY)     = 3
[pid 12299] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12299] exit_group(0)               = ?
[pid 12299] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12299, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12300
./strace-static-x86_64: Process 12300 attached
[pid 12300] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12300] setpgid(0, 0)               = 0
[pid 12300] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12300] write(3, "1000", 4)         = 4
[pid 12300] close(3)                    = 0
[pid 12300] memfd_create("syzkaller", 0) = 3
[pid 12300] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12300] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12300] munmap(0x7fd990e3c000, 32768) = 0
[pid 12300] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12300] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12300] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12300] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12300] close(4)                    = 0
[pid 12300] close(3)                    = 0
[pid 12300] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12300] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12300] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12300] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12300] open("./bus", O_RDONLY)     = 3
[pid 12300] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12300] exit_group(0)               = ?
[pid 12300] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12300, 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=0x55555567f5d0) = 12301
./strace-static-x86_64: Process 12301 attached
[pid 12301] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12301] setpgid(0, 0)               = 0
[pid 12301] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12301] write(3, "1000", 4)         = 4
[pid 12301] close(3)                    = 0
[pid 12301] memfd_create("syzkaller", 0) = 3
[pid 12301] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12301] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12301] munmap(0x7fd990e3c000, 32768) = 0
[pid 12301] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12301] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12301] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12301] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12301] close(4)                    = 0
[pid 12301] close(3)                    = 0
[pid 12301] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12301] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12301] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12301] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12301] open("./bus", O_RDONLY)     = 3
[pid 12301] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12301] exit_group(0)               = ?
[pid 12301] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12301, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12302 attached
, child_tidptr=0x55555567f5d0) = 12302
[pid 12302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12302] setpgid(0, 0)               = 0
[pid 12302] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12302] write(3, "1000", 4)         = 4
[pid 12302] close(3)                    = 0
[pid 12302] memfd_create("syzkaller", 0) = 3
[pid 12302] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12302] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12302] munmap(0x7fd990e3c000, 32768) = 0
[pid 12302] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12302] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12302] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12302] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12302] close(4)                    = 0
[pid 12302] close(3)                    = 0
[pid 12302] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12302] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12302] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12302] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12302] open("./bus", O_RDONLY)     = 3
[pid 12302] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12302] exit_group(0)               = ?
[pid 12302] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12302, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12303
./strace-static-x86_64: Process 12303 attached
[pid 12303] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12303] setpgid(0, 0)               = 0
[pid 12303] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12303] write(3, "1000", 4)         = 4
[pid 12303] close(3)                    = 0
[pid 12303] memfd_create("syzkaller", 0) = 3
[pid 12303] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12303] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12303] munmap(0x7fd990e3c000, 32768) = 0
[pid 12303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12303] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12303] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12303] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12303] close(4)                    = 0
[pid 12303] close(3)                    = 0
[pid 12303] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12303] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12303] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12303] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12303] open("./bus", O_RDONLY)     = 3
[pid 12303] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12303] exit_group(0)               = ?
[pid 12303] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12303, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12304
./strace-static-x86_64: Process 12304 attached
[pid 12304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12304] setpgid(0, 0)               = 0
[pid 12304] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12304] write(3, "1000", 4)         = 4
[pid 12304] close(3)                    = 0
[pid 12304] memfd_create("syzkaller", 0) = 3
[pid 12304] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12304] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12304] munmap(0x7fd990e3c000, 32768) = 0
[pid 12304] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12304] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12304] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12304] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12304] close(4)                    = 0
[pid 12304] close(3)                    = 0
[pid 12304] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12304] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12304] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12304] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12304] open("./bus", O_RDONLY)     = 3
[pid 12304] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12304] exit_group(0)               = ?
[pid 12304] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12304, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12305
./strace-static-x86_64: Process 12305 attached
[pid 12305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12305] setpgid(0, 0)               = 0
[pid 12305] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12305] write(3, "1000", 4)         = 4
[pid 12305] close(3)                    = 0
[pid 12305] memfd_create("syzkaller", 0) = 3
[pid 12305] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12305] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12305] munmap(0x7fd990e3c000, 32768) = 0
[pid 12305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12305] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12305] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12305] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12305] close(4)                    = 0
[pid 12305] close(3)                    = 0
[pid 12305] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12305] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12305] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12305] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12305] open("./bus", O_RDONLY)     = 3
[pid 12305] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12305] exit_group(0)               = ?
[pid 12305] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12305, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 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 12306 attached
, child_tidptr=0x55555567f5d0) = 12306
[pid 12306] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12306] setpgid(0, 0)               = 0
[pid 12306] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12306] write(3, "1000", 4)         = 4
[pid 12306] close(3)                    = 0
[pid 12306] memfd_create("syzkaller", 0) = 3
[pid 12306] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12306] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12306] munmap(0x7fd990e3c000, 32768) = 0
[pid 12306] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12306] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12306] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12306] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12306] close(4)                    = 0
[pid 12306] close(3)                    = 0
[pid 12306] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12306] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12306] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12306] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12306] open("./bus", O_RDONLY)     = 3
[pid 12306] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12306] exit_group(0)               = ?
[pid 12306] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12306, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12307
./strace-static-x86_64: Process 12307 attached
[pid 12307] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12307] setpgid(0, 0)               = 0
[pid 12307] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12307] write(3, "1000", 4)         = 4
[pid 12307] close(3)                    = 0
[pid 12307] memfd_create("syzkaller", 0) = 3
[pid 12307] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12307] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12307] munmap(0x7fd990e3c000, 32768) = 0
[pid 12307] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12307] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12307] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12307] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12307] close(4)                    = 0
[pid 12307] close(3)                    = 0
[pid 12307] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12307] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12307] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12307] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12307] open("./bus", O_RDONLY)     = 3
[pid 12307] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12307] exit_group(0)               = ?
[pid 12307] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12307, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12308
./strace-static-x86_64: Process 12308 attached
[pid 12308] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12308] setpgid(0, 0)               = 0
[pid 12308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12308] write(3, "1000", 4)         = 4
[pid 12308] close(3)                    = 0
[pid 12308] memfd_create("syzkaller", 0) = 3
[pid 12308] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12308] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12308] munmap(0x7fd990e3c000, 32768) = 0
[pid 12308] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12308] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12308] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12308] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12308] close(4)                    = 0
[pid 12308] close(3)                    = 0
[pid 12308] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12308] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12308] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12308] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12308] open("./bus", O_RDONLY)     = 3
[pid 12308] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12308] exit_group(0)               = ?
[pid 12308] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12308, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12309 attached
, child_tidptr=0x55555567f5d0) = 12309
[pid 12309] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12309] setpgid(0, 0)               = 0
[pid 12309] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12309] write(3, "1000", 4)         = 4
[pid 12309] close(3)                    = 0
[pid 12309] memfd_create("syzkaller", 0) = 3
[pid 12309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12309] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12309] munmap(0x7fd990e3c000, 32768) = 0
[pid 12309] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12309] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12309] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12309] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12309] close(4)                    = 0
[pid 12309] close(3)                    = 0
[pid 12309] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12309] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12309] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12309] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12309] open("./bus", O_RDONLY)     = 3
[pid 12309] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12309] exit_group(0)               = ?
[pid 12309] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12309, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12310
./strace-static-x86_64: Process 12310 attached
[pid 12310] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12310] setpgid(0, 0)               = 0
[pid 12310] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12310] write(3, "1000", 4)         = 4
[pid 12310] close(3)                    = 0
[pid 12310] memfd_create("syzkaller", 0) = 3
[pid 12310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12310] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12310] munmap(0x7fd990e3c000, 32768) = 0
[pid 12310] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12310] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12310] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12310] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12310] close(4)                    = 0
[pid 12310] close(3)                    = 0
[pid 12310] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12310] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12310] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12310] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12310] open("./bus", O_RDONLY)     = 3
[pid 12310] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12310] exit_group(0)               = ?
[pid 12310] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12310, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12311
./strace-static-x86_64: Process 12311 attached
[pid 12311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12311] setpgid(0, 0)               = 0
[pid 12311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12311] write(3, "1000", 4)         = 4
[pid 12311] close(3)                    = 0
[pid 12311] memfd_create("syzkaller", 0) = 3
[pid 12311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12311] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12311] munmap(0x7fd990e3c000, 32768) = 0
[pid 12311] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12311] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12311] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12311] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12311] close(4)                    = 0
[pid 12311] close(3)                    = 0
[pid 12311] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12311] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12311] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12311] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12311] open("./bus", O_RDONLY)     = 3
[pid 12311] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12311] exit_group(0)               = ?
[pid 12311] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12311, 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=0x55555567f5d0) = 12312
./strace-static-x86_64: Process 12312 attached
[pid 12312] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12312] setpgid(0, 0)               = 0
[pid 12312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12312] write(3, "1000", 4)         = 4
[pid 12312] close(3)                    = 0
[pid 12312] memfd_create("syzkaller", 0) = 3
[pid 12312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12312] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12312] munmap(0x7fd990e3c000, 32768) = 0
[pid 12312] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12312] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12312] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12312] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12312] close(4)                    = 0
[pid 12312] close(3)                    = 0
[pid 12312] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12312] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12312] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12312] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12312] open("./bus", O_RDONLY)     = 3
[pid 12312] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12312] exit_group(0)               = ?
[pid 12312] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12312, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12313 attached
, child_tidptr=0x55555567f5d0) = 12313
[pid 12313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12313] setpgid(0, 0)               = 0
[pid 12313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12313] write(3, "1000", 4)         = 4
[pid 12313] close(3)                    = 0
[pid 12313] memfd_create("syzkaller", 0) = 3
[pid 12313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12313] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12313] munmap(0x7fd990e3c000, 32768) = 0
[pid 12313] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12313] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12313] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12313] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12313] close(4)                    = 0
[pid 12313] close(3)                    = 0
[pid 12313] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12313] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12313] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12313] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12313] open("./bus", O_RDONLY)     = 3
[pid 12313] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12313] exit_group(0)               = ?
[pid 12313] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12313, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12314
./strace-static-x86_64: Process 12314 attached
[pid 12314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12314] setpgid(0, 0)               = 0
[pid 12314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12314] write(3, "1000", 4)         = 4
[pid 12314] close(3)                    = 0
[pid 12314] memfd_create("syzkaller", 0) = 3
[pid 12314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12314] munmap(0x7fd990e3c000, 32768) = 0
[pid 12314] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12314] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12314] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12314] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12314] close(4)                    = 0
[pid 12314] close(3)                    = 0
[pid 12314] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12314] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12314] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12314] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12314] open("./bus", O_RDONLY)     = 3
[pid 12314] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12314] exit_group(0)               = ?
[pid 12314] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12314, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12315 attached
, child_tidptr=0x55555567f5d0) = 12315
[pid 12315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12315] setpgid(0, 0)               = 0
[pid 12315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12315] write(3, "1000", 4)         = 4
[pid 12315] close(3)                    = 0
[pid 12315] memfd_create("syzkaller", 0) = 3
[pid 12315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12315] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12315] munmap(0x7fd990e3c000, 32768) = 0
[pid 12315] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12315] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12315] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12315] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12315] close(4)                    = 0
[pid 12315] close(3)                    = 0
[pid 12315] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12315] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12315] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12315] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12315] open("./bus", O_RDONLY)     = 3
[pid 12315] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12315] exit_group(0)               = ?
[pid 12315] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12315, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12316 attached
, child_tidptr=0x55555567f5d0) = 12316
[pid 12316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12316] setpgid(0, 0)               = 0
[pid 12316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12316] write(3, "1000", 4)         = 4
[pid 12316] close(3)                    = 0
[pid 12316] memfd_create("syzkaller", 0) = 3
[pid 12316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12316] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12316] munmap(0x7fd990e3c000, 32768) = 0
[pid 12316] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12316] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12316] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12316] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12316] close(4)                    = 0
[pid 12316] close(3)                    = 0
[pid 12316] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12316] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12316] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12316] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12316] open("./bus", O_RDONLY)     = 3
[pid 12316] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12316] exit_group(0)               = ?
[pid 12316] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12316, 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 12317 attached
, child_tidptr=0x55555567f5d0) = 12317
[pid 12317] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12317] setpgid(0, 0)               = 0
[pid 12317] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12317] write(3, "1000", 4)         = 4
[pid 12317] close(3)                    = 0
[pid 12317] memfd_create("syzkaller", 0) = 3
[pid 12317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12317] munmap(0x7fd990e3c000, 32768) = 0
[pid 12317] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12317] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12317] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12317] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12317] close(4)                    = 0
[pid 12317] close(3)                    = 0
[pid 12317] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12317] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12317] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12317] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12317] open("./bus", O_RDONLY)     = 3
[pid 12317] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12317] exit_group(0)               = ?
[pid 12317] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12317, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12318 attached
, child_tidptr=0x55555567f5d0) = 12318
[pid 12318] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12318] setpgid(0, 0)               = 0
[pid 12318] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12318] write(3, "1000", 4)         = 4
[pid 12318] close(3)                    = 0
[pid 12318] memfd_create("syzkaller", 0) = 3
[pid 12318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12318] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12318] munmap(0x7fd990e3c000, 32768) = 0
[pid 12318] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12318] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12318] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12318] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12318] close(4)                    = 0
[pid 12318] close(3)                    = 0
[pid 12318] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12318] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12318] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12318] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12318] open("./bus", O_RDONLY)     = 3
[pid 12318] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12318] exit_group(0)               = ?
[pid 12318] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12318, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12319
./strace-static-x86_64: Process 12319 attached
[pid 12319] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12319] setpgid(0, 0)               = 0
[pid 12319] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12319] write(3, "1000", 4)         = 4
[pid 12319] close(3)                    = 0
[pid 12319] memfd_create("syzkaller", 0) = 3
[pid 12319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12319] munmap(0x7fd990e3c000, 32768) = 0
[pid 12319] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12319] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12319] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12319] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12319] close(4)                    = 0
[pid 12319] close(3)                    = 0
[pid 12319] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12319] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12319] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12319] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12319] open("./bus", O_RDONLY)     = 3
[pid 12319] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12319] exit_group(0)               = ?
[pid 12319] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12319, 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 12320 attached
, child_tidptr=0x55555567f5d0) = 12320
[pid 12320] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12320] setpgid(0, 0)               = 0
[pid 12320] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12320] write(3, "1000", 4)         = 4
[pid 12320] close(3)                    = 0
[pid 12320] memfd_create("syzkaller", 0) = 3
[pid 12320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12320] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12320] munmap(0x7fd990e3c000, 32768) = 0
[pid 12320] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12320] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12320] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12320] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12320] close(4)                    = 0
[pid 12320] close(3)                    = 0
[pid 12320] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12320] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12320] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12320] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12320] open("./bus", O_RDONLY)     = 3
[pid 12320] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12320] exit_group(0)               = ?
[pid 12320] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12320, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12321 attached
, child_tidptr=0x55555567f5d0) = 12321
[pid 12321] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12321] setpgid(0, 0)               = 0
[pid 12321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12321] write(3, "1000", 4)         = 4
[pid 12321] close(3)                    = 0
[pid 12321] memfd_create("syzkaller", 0) = 3
[pid 12321] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12321] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12321] munmap(0x7fd990e3c000, 32768) = 0
[pid 12321] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12321] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12321] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12321] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12321] close(4)                    = 0
[pid 12321] close(3)                    = 0
[pid 12321] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12321] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12321] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12321] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12321] open("./bus", O_RDONLY)     = 3
[pid 12321] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12321] exit_group(0)               = ?
[pid 12321] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12321, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12322
./strace-static-x86_64: Process 12322 attached
[pid 12322] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12322] setpgid(0, 0)               = 0
[pid 12322] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12322] write(3, "1000", 4)         = 4
[pid 12322] close(3)                    = 0
[pid 12322] memfd_create("syzkaller", 0) = 3
[pid 12322] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12322] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12322] munmap(0x7fd990e3c000, 32768) = 0
[pid 12322] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12322] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12322] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12322] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12322] close(4)                    = 0
[pid 12322] close(3)                    = 0
[pid 12322] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12322] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12322] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12322] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12322] open("./bus", O_RDONLY)     = 3
[pid 12322] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12322] exit_group(0)               = ?
[pid 12322] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12322, 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=0x55555567f5d0) = 12323
./strace-static-x86_64: Process 12323 attached
[pid 12323] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12323] setpgid(0, 0)               = 0
[pid 12323] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12323] write(3, "1000", 4)         = 4
[pid 12323] close(3)                    = 0
[pid 12323] memfd_create("syzkaller", 0) = 3
[pid 12323] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12323] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12323] munmap(0x7fd990e3c000, 32768) = 0
[pid 12323] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12323] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12323] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12323] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12323] close(4)                    = 0
[pid 12323] close(3)                    = 0
[pid 12323] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12323] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12323] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12323] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12323] open("./bus", O_RDONLY)     = 3
[pid 12323] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12323] exit_group(0)               = ?
[pid 12323] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12323, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12324 attached
, child_tidptr=0x55555567f5d0) = 12324
[pid 12324] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12324] setpgid(0, 0)               = 0
[pid 12324] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12324] write(3, "1000", 4)         = 4
[pid 12324] close(3)                    = 0
[pid 12324] memfd_create("syzkaller", 0) = 3
[pid 12324] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12324] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12324] munmap(0x7fd990e3c000, 32768) = 0
[pid 12324] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12324] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12324] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12324] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12324] close(4)                    = 0
[pid 12324] close(3)                    = 0
[pid 12324] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12324] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12324] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12324] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12324] open("./bus", O_RDONLY)     = 3
[pid 12324] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12324] exit_group(0)               = ?
[pid 12324] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12324, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12325
./strace-static-x86_64: Process 12325 attached
[pid 12325] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12325] setpgid(0, 0)               = 0
[pid 12325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12325] write(3, "1000", 4)         = 4
[pid 12325] close(3)                    = 0
[pid 12325] memfd_create("syzkaller", 0) = 3
[pid 12325] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12325] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12325] munmap(0x7fd990e3c000, 32768) = 0
[pid 12325] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12325] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12325] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12325] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12325] close(4)                    = 0
[pid 12325] close(3)                    = 0
[pid 12325] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12325] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12325] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12325] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12325] open("./bus", O_RDONLY)     = 3
[pid 12325] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12325] exit_group(0)               = ?
[pid 12325] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12325, 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 12326 attached
, child_tidptr=0x55555567f5d0) = 12326
[pid 12326] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12326] setpgid(0, 0)               = 0
[pid 12326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12326] write(3, "1000", 4)         = 4
[pid 12326] close(3)                    = 0
[pid 12326] memfd_create("syzkaller", 0) = 3
[pid 12326] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12326] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12326] munmap(0x7fd990e3c000, 32768) = 0
[pid 12326] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12326] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12326] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12326] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12326] close(4)                    = 0
[pid 12326] close(3)                    = 0
[pid 12326] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12326] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12326] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12326] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12326] open("./bus", O_RDONLY)     = 3
[pid 12326] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12326] exit_group(0)               = ?
[pid 12326] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12326, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12327
./strace-static-x86_64: Process 12327 attached
[pid 12327] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12327] setpgid(0, 0)               = 0
[pid 12327] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12327] write(3, "1000", 4)         = 4
[pid 12327] close(3)                    = 0
[pid 12327] memfd_create("syzkaller", 0) = 3
[pid 12327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12327] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12327] munmap(0x7fd990e3c000, 32768) = 0
[pid 12327] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12327] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12327] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12327] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12327] close(4)                    = 0
[pid 12327] close(3)                    = 0
[pid 12327] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12327] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12327] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12327] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12327] open("./bus", O_RDONLY)     = 3
[pid 12327] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12327] exit_group(0)               = ?
[pid 12327] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12327, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12328
./strace-static-x86_64: Process 12328 attached
[pid 12328] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12328] setpgid(0, 0)               = 0
[pid 12328] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12328] write(3, "1000", 4)         = 4
[pid 12328] close(3)                    = 0
[pid 12328] memfd_create("syzkaller", 0) = 3
[pid 12328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12328] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12328] munmap(0x7fd990e3c000, 32768) = 0
[pid 12328] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12328] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12328] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12328] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12328] close(4)                    = 0
[pid 12328] close(3)                    = 0
[pid 12328] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12328] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12328] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12328] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12328] open("./bus", O_RDONLY)     = 3
[pid 12328] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12328] exit_group(0)               = ?
[pid 12328] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12328, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12329
./strace-static-x86_64: Process 12329 attached
[pid 12329] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12329] setpgid(0, 0)               = 0
[pid 12329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12329] write(3, "1000", 4)         = 4
[pid 12329] close(3)                    = 0
[pid 12329] memfd_create("syzkaller", 0) = 3
[pid 12329] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12329] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12329] munmap(0x7fd990e3c000, 32768) = 0
[pid 12329] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12329] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12329] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12329] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12329] close(4)                    = 0
[pid 12329] close(3)                    = 0
[pid 12329] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12329] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12329] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12329] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12329] open("./bus", O_RDONLY)     = 3
[pid 12329] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12329] exit_group(0)               = ?
[pid 12329] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12329, 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=0x55555567f5d0) = 12330
./strace-static-x86_64: Process 12330 attached
[pid 12330] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12330] setpgid(0, 0)               = 0
[pid 12330] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12330] write(3, "1000", 4)         = 4
[pid 12330] close(3)                    = 0
[pid 12330] memfd_create("syzkaller", 0) = 3
[pid 12330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12330] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12330] munmap(0x7fd990e3c000, 32768) = 0
[pid 12330] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12330] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12330] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12330] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12330] close(4)                    = 0
[pid 12330] close(3)                    = 0
[pid 12330] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12330] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12330] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12330] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12330] open("./bus", O_RDONLY)     = 3
[pid 12330] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12330] exit_group(0)               = ?
[pid 12330] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12330, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12331
./strace-static-x86_64: Process 12331 attached
[pid 12331] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12331] setpgid(0, 0)               = 0
[pid 12331] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12331] write(3, "1000", 4)         = 4
[pid 12331] close(3)                    = 0
[pid 12331] memfd_create("syzkaller", 0) = 3
[pid 12331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12331] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12331] munmap(0x7fd990e3c000, 32768) = 0
[pid 12331] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12331] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12331] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12331] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12331] close(4)                    = 0
[pid 12331] close(3)                    = 0
[pid 12331] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12331] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12331] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12331] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12331] open("./bus", O_RDONLY)     = 3
[pid 12331] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12331] exit_group(0)               = ?
[pid 12331] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12331, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12332
./strace-static-x86_64: Process 12332 attached
[pid 12332] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12332] setpgid(0, 0)               = 0
[pid 12332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12332] write(3, "1000", 4)         = 4
[pid 12332] close(3)                    = 0
[pid 12332] memfd_create("syzkaller", 0) = 3
[pid 12332] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12332] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12332] munmap(0x7fd990e3c000, 32768) = 0
[pid 12332] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12332] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12332] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12332] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12332] close(4)                    = 0
[pid 12332] close(3)                    = 0
[pid 12332] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12332] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12332] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12332] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12332] open("./bus", O_RDONLY)     = 3
[pid 12332] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12332] exit_group(0)               = ?
[pid 12332] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12332, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12333 attached
, child_tidptr=0x55555567f5d0) = 12333
[pid 12333] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12333] setpgid(0, 0)               = 0
[pid 12333] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12333] write(3, "1000", 4)         = 4
[pid 12333] close(3)                    = 0
[pid 12333] memfd_create("syzkaller", 0) = 3
[pid 12333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12333] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12333] munmap(0x7fd990e3c000, 32768) = 0
[pid 12333] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12333] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12333] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12333] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12333] close(4)                    = 0
[pid 12333] close(3)                    = 0
[pid 12333] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12333] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12333] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12333] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12333] open("./bus", O_RDONLY)     = 3
[pid 12333] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12333] exit_group(0)               = ?
[pid 12333] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12333, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12334 attached
, child_tidptr=0x55555567f5d0) = 12334
[pid 12334] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12334] setpgid(0, 0)               = 0
[pid 12334] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12334] write(3, "1000", 4)         = 4
[pid 12334] close(3)                    = 0
[pid 12334] memfd_create("syzkaller", 0) = 3
[pid 12334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12334] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12334] munmap(0x7fd990e3c000, 32768) = 0
[pid 12334] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12334] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12334] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12334] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12334] close(4)                    = 0
[pid 12334] close(3)                    = 0
[pid 12334] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12334] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12334] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12334] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12334] open("./bus", O_RDONLY)     = 3
[pid 12334] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12334] exit_group(0)               = ?
[pid 12334] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12334, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12335
./strace-static-x86_64: Process 12335 attached
[pid 12335] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12335] setpgid(0, 0)               = 0
[pid 12335] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12335] write(3, "1000", 4)         = 4
[pid 12335] close(3)                    = 0
[pid 12335] memfd_create("syzkaller", 0) = 3
[pid 12335] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12335] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12335] munmap(0x7fd990e3c000, 32768) = 0
[pid 12335] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12335] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12335] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12335] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12335] close(4)                    = 0
[pid 12335] close(3)                    = 0
[pid 12335] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12335] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12335] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12335] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12335] open("./bus", O_RDONLY)     = 3
[pid 12335] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12335] exit_group(0)               = ?
[pid 12335] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12335, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12336
./strace-static-x86_64: Process 12336 attached
[pid 12336] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12336] setpgid(0, 0)               = 0
[pid 12336] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12336] write(3, "1000", 4)         = 4
[pid 12336] close(3)                    = 0
[pid 12336] memfd_create("syzkaller", 0) = 3
[pid 12336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12336] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12336] munmap(0x7fd990e3c000, 32768) = 0
[pid 12336] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12336] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12336] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12336] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12336] close(4)                    = 0
[pid 12336] close(3)                    = 0
[pid 12336] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12336] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12336] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12336] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12336] open("./bus", O_RDONLY)     = 3
[pid 12336] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12336] exit_group(0)               = ?
[pid 12336] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12336, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12337 attached
, child_tidptr=0x55555567f5d0) = 12337
[pid 12337] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12337] setpgid(0, 0)               = 0
[pid 12337] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12337] write(3, "1000", 4)         = 4
[pid 12337] close(3)                    = 0
[pid 12337] memfd_create("syzkaller", 0) = 3
[pid 12337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12337] munmap(0x7fd990e3c000, 32768) = 0
[pid 12337] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12337] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12337] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12337] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12337] close(4)                    = 0
[pid 12337] close(3)                    = 0
[pid 12337] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12337] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12337] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12337] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12337] open("./bus", O_RDONLY)     = 3
[pid 12337] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12337] exit_group(0)               = ?
[pid 12337] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12337, 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=0x55555567f5d0) = 12338
./strace-static-x86_64: Process 12338 attached
[pid 12338] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12338] setpgid(0, 0)               = 0
[pid 12338] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12338] write(3, "1000", 4)         = 4
[pid 12338] close(3)                    = 0
[pid 12338] memfd_create("syzkaller", 0) = 3
[pid 12338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12338] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12338] munmap(0x7fd990e3c000, 32768) = 0
[pid 12338] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12338] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12338] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12338] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12338] close(4)                    = 0
[pid 12338] close(3)                    = 0
[pid 12338] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12338] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12338] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12338] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12338] open("./bus", O_RDONLY)     = 3
[pid 12338] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12338] exit_group(0)               = ?
[pid 12338] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12338, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12339 attached
, child_tidptr=0x55555567f5d0) = 12339
[pid 12339] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12339] setpgid(0, 0)               = 0
[pid 12339] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12339] write(3, "1000", 4)         = 4
[pid 12339] close(3)                    = 0
[pid 12339] memfd_create("syzkaller", 0) = 3
[pid 12339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12339] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12339] munmap(0x7fd990e3c000, 32768) = 0
[pid 12339] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12339] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12339] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12339] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12339] close(4)                    = 0
[pid 12339] close(3)                    = 0
[pid 12339] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12339] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12339] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12339] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12339] open("./bus", O_RDONLY)     = 3
[pid 12339] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12339] exit_group(0)               = ?
[pid 12339] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12339, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12340 attached
, child_tidptr=0x55555567f5d0) = 12340
[pid 12340] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12340] setpgid(0, 0)               = 0
[pid 12340] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12340] write(3, "1000", 4)         = 4
[pid 12340] close(3)                    = 0
[pid 12340] memfd_create("syzkaller", 0) = 3
[pid 12340] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12340] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12340] munmap(0x7fd990e3c000, 32768) = 0
[pid 12340] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12340] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12340] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12340] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12340] close(4)                    = 0
[pid 12340] close(3)                    = 0
[pid 12340] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12340] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12340] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12340] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12340] open("./bus", O_RDONLY)     = 3
[pid 12340] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12340] exit_group(0)               = ?
[pid 12340] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12340, 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 12341 attached
, child_tidptr=0x55555567f5d0) = 12341
[pid 12341] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12341] setpgid(0, 0)               = 0
[pid 12341] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12341] write(3, "1000", 4)         = 4
[pid 12341] close(3)                    = 0
[pid 12341] memfd_create("syzkaller", 0) = 3
[pid 12341] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12341] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12341] munmap(0x7fd990e3c000, 32768) = 0
[pid 12341] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12341] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12341] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12341] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12341] close(4)                    = 0
[pid 12341] close(3)                    = 0
[pid 12341] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12341] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12341] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12341] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12341] open("./bus", O_RDONLY)     = 3
[pid 12341] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12341] exit_group(0)               = ?
[pid 12341] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12341, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12342
./strace-static-x86_64: Process 12342 attached
[pid 12342] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12342] setpgid(0, 0)               = 0
[pid 12342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12342] write(3, "1000", 4)         = 4
[pid 12342] close(3)                    = 0
[pid 12342] memfd_create("syzkaller", 0) = 3
[pid 12342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12342] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12342] munmap(0x7fd990e3c000, 32768) = 0
[pid 12342] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12342] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12342] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12342] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12342] close(4)                    = 0
[pid 12342] close(3)                    = 0
[pid 12342] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12342] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12342] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12342] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12342] open("./bus", O_RDONLY)     = 3
[pid 12342] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12342] exit_group(0)               = ?
[pid 12342] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12342, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12343
./strace-static-x86_64: Process 12343 attached
[pid 12343] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12343] setpgid(0, 0)               = 0
[pid 12343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12343] write(3, "1000", 4)         = 4
[pid 12343] close(3)                    = 0
[pid 12343] memfd_create("syzkaller", 0) = 3
[pid 12343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12343] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12343] munmap(0x7fd990e3c000, 32768) = 0
[pid 12343] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12343] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12343] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12343] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12343] close(4)                    = 0
[pid 12343] close(3)                    = 0
[pid 12343] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12343] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12343] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12343] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12343] open("./bus", O_RDONLY)     = 3
[pid 12343] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12343] exit_group(0)               = ?
[pid 12343] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12343, 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 12344 attached
, child_tidptr=0x55555567f5d0) = 12344
[pid 12344] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12344] setpgid(0, 0)               = 0
[pid 12344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12344] write(3, "1000", 4)         = 4
[pid 12344] close(3)                    = 0
[pid 12344] memfd_create("syzkaller", 0) = 3
[pid 12344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12344] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12344] munmap(0x7fd990e3c000, 32768) = 0
[pid 12344] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12344] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12344] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12344] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12344] close(4)                    = 0
[pid 12344] close(3)                    = 0
[pid 12344] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12344] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12344] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12344] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12344] open("./bus", O_RDONLY)     = 3
[pid 12344] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12344] exit_group(0)               = ?
[pid 12344] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12344, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12345
./strace-static-x86_64: Process 12345 attached
[pid 12345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12345] setpgid(0, 0)               = 0
[pid 12345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12345] write(3, "1000", 4)         = 4
[pid 12345] close(3)                    = 0
[pid 12345] memfd_create("syzkaller", 0) = 3
[pid 12345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12345] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12345] munmap(0x7fd990e3c000, 32768) = 0
[pid 12345] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12345] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12345] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12345] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12345] close(4)                    = 0
[pid 12345] close(3)                    = 0
[pid 12345] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12345] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12345] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12345] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12345] open("./bus", O_RDONLY)     = 3
[pid 12345] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12345] exit_group(0)               = ?
[pid 12345] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12345, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12346
./strace-static-x86_64: Process 12346 attached
[pid 12346] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12346] setpgid(0, 0)               = 0
[pid 12346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12346] write(3, "1000", 4)         = 4
[pid 12346] close(3)                    = 0
[pid 12346] memfd_create("syzkaller", 0) = 3
[pid 12346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12346] munmap(0x7fd990e3c000, 32768) = 0
[pid 12346] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12346] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12346] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12346] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12346] close(4)                    = 0
[pid 12346] close(3)                    = 0
[pid 12346] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12346] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12346] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12346] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12346] open("./bus", O_RDONLY)     = 3
[pid 12346] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12346] exit_group(0)               = ?
[pid 12346] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12346, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12347 attached
, child_tidptr=0x55555567f5d0) = 12347
[pid 12347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12347] setpgid(0, 0)               = 0
[pid 12347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12347] write(3, "1000", 4)         = 4
[pid 12347] close(3)                    = 0
[pid 12347] memfd_create("syzkaller", 0) = 3
[pid 12347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12347] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12347] munmap(0x7fd990e3c000, 32768) = 0
[pid 12347] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12347] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12347] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12347] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12347] close(4)                    = 0
[pid 12347] close(3)                    = 0
[pid 12347] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12347] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12347] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12347] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12347] open("./bus", O_RDONLY)     = 3
[pid 12347] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12347] exit_group(0)               = ?
[pid 12347] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12347, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12348 attached
, child_tidptr=0x55555567f5d0) = 12348
[pid 12348] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12348] setpgid(0, 0)               = 0
[pid 12348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12348] write(3, "1000", 4)         = 4
[pid 12348] close(3)                    = 0
[pid 12348] memfd_create("syzkaller", 0) = 3
[pid 12348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12348] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12348] munmap(0x7fd990e3c000, 32768) = 0
[pid 12348] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12348] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12348] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12348] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12348] close(4)                    = 0
[pid 12348] close(3)                    = 0
[pid 12348] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12348] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12348] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12348] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12348] open("./bus", O_RDONLY)     = 3
[pid 12348] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12348] exit_group(0)               = ?
[pid 12348] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12348, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12349
./strace-static-x86_64: Process 12349 attached
[pid 12349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12349] setpgid(0, 0)               = 0
[pid 12349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12349] write(3, "1000", 4)         = 4
[pid 12349] close(3)                    = 0
[pid 12349] memfd_create("syzkaller", 0) = 3
[pid 12349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12349] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12349] munmap(0x7fd990e3c000, 32768) = 0
[pid 12349] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12349] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12349] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12349] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12349] close(4)                    = 0
[pid 12349] close(3)                    = 0
[pid 12349] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12349] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12349] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12349] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12349] open("./bus", O_RDONLY)     = 3
[pid 12349] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12349] exit_group(0)               = ?
[pid 12349] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12349, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12350
./strace-static-x86_64: Process 12350 attached
[pid 12350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12350] setpgid(0, 0)               = 0
[pid 12350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12350] write(3, "1000", 4)         = 4
[pid 12350] close(3)                    = 0
[pid 12350] memfd_create("syzkaller", 0) = 3
[pid 12350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12350] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12350] munmap(0x7fd990e3c000, 32768) = 0
[pid 12350] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12350] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12350] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12350] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12350] close(4)                    = 0
[pid 12350] close(3)                    = 0
[pid 12350] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12350] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12350] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12350] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12350] open("./bus", O_RDONLY)     = 3
[pid 12350] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12350] exit_group(0)               = ?
[pid 12350] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12350, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12351
./strace-static-x86_64: Process 12351 attached
[pid 12351] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12351] setpgid(0, 0)               = 0
[pid 12351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12351] write(3, "1000", 4)         = 4
[pid 12351] close(3)                    = 0
[pid 12351] memfd_create("syzkaller", 0) = 3
[pid 12351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12351] munmap(0x7fd990e3c000, 32768) = 0
[pid 12351] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12351] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12351] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12351] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12351] close(4)                    = 0
[pid 12351] close(3)                    = 0
[pid 12351] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12351] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12351] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12351] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12351] open("./bus", O_RDONLY)     = 3
[pid 12351] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12351] exit_group(0)               = ?
[pid 12351] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12351, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12352
./strace-static-x86_64: Process 12352 attached
[pid 12352] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12352] setpgid(0, 0)               = 0
[pid 12352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12352] write(3, "1000", 4)         = 4
[pid 12352] close(3)                    = 0
[pid 12352] memfd_create("syzkaller", 0) = 3
[pid 12352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12352] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12352] munmap(0x7fd990e3c000, 32768) = 0
[pid 12352] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12352] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12352] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12352] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12352] close(4)                    = 0
[pid 12352] close(3)                    = 0
[pid 12352] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12352] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12352] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12352] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12352] open("./bus", O_RDONLY)     = 3
[pid 12352] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12352] exit_group(0)               = ?
[pid 12352] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12352, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12353
./strace-static-x86_64: Process 12353 attached
[pid 12353] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12353] setpgid(0, 0)               = 0
[pid 12353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12353] write(3, "1000", 4)         = 4
[pid 12353] close(3)                    = 0
[pid 12353] memfd_create("syzkaller", 0) = 3
[pid 12353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12353] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12353] munmap(0x7fd990e3c000, 32768) = 0
[pid 12353] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12353] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12353] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12353] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12353] close(4)                    = 0
[pid 12353] close(3)                    = 0
[pid 12353] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12353] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12353] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12353] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12353] open("./bus", O_RDONLY)     = 3
[pid 12353] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12353] exit_group(0)               = ?
[pid 12353] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12353, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12354
./strace-static-x86_64: Process 12354 attached
[pid 12354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12354] setpgid(0, 0)               = 0
[pid 12354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12354] write(3, "1000", 4)         = 4
[pid 12354] close(3)                    = 0
[pid 12354] memfd_create("syzkaller", 0) = 3
[pid 12354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12354] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12354] munmap(0x7fd990e3c000, 32768) = 0
[pid 12354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12354] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12354] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12354] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12354] close(4)                    = 0
[pid 12354] close(3)                    = 0
[pid 12354] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12354] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12354] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12354] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12354] open("./bus", O_RDONLY)     = 3
[pid 12354] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12354] exit_group(0)               = ?
[pid 12354] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12354, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12355
./strace-static-x86_64: Process 12355 attached
[pid 12355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12355] setpgid(0, 0)               = 0
[pid 12355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12355] write(3, "1000", 4)         = 4
[pid 12355] close(3)                    = 0
[pid 12355] memfd_create("syzkaller", 0) = 3
[pid 12355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12355] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12355] munmap(0x7fd990e3c000, 32768) = 0
[pid 12355] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12355] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12355] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12355] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12355] close(4)                    = 0
[pid 12355] close(3)                    = 0
[pid 12355] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12355] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12355] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12355] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12355] open("./bus", O_RDONLY)     = 3
[pid 12355] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12355] exit_group(0)               = ?
[pid 12355] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12355, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12356
./strace-static-x86_64: Process 12356 attached
[pid 12356] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12356] setpgid(0, 0)               = 0
[pid 12356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12356] write(3, "1000", 4)         = 4
[pid 12356] close(3)                    = 0
[pid 12356] memfd_create("syzkaller", 0) = 3
[pid 12356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12356] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12356] munmap(0x7fd990e3c000, 32768) = 0
[pid 12356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12356] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12356] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12356] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12356] close(4)                    = 0
[pid 12356] close(3)                    = 0
[pid 12356] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12356] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12356] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12356] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12356] open("./bus", O_RDONLY)     = 3
[pid 12356] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12356] exit_group(0)               = ?
[pid 12356] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12356, 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=0x55555567f5d0) = 12357
./strace-static-x86_64: Process 12357 attached
[pid 12357] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12357] setpgid(0, 0)               = 0
[pid 12357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12357] write(3, "1000", 4)         = 4
[pid 12357] close(3)                    = 0
[pid 12357] memfd_create("syzkaller", 0) = 3
[pid 12357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12357] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12357] munmap(0x7fd990e3c000, 32768) = 0
[pid 12357] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12357] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12357] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12357] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12357] close(4)                    = 0
[pid 12357] close(3)                    = 0
[pid 12357] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12357] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12357] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12357] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12357] open("./bus", O_RDONLY)     = 3
[pid 12357] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12357] exit_group(0)               = ?
[pid 12357] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12357, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12358 attached
, child_tidptr=0x55555567f5d0) = 12358
[pid 12358] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12358] setpgid(0, 0)               = 0
[pid 12358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12358] write(3, "1000", 4)         = 4
[pid 12358] close(3)                    = 0
[pid 12358] memfd_create("syzkaller", 0) = 3
[pid 12358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12358] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12358] munmap(0x7fd990e3c000, 32768) = 0
[pid 12358] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12358] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12358] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12358] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12358] close(4)                    = 0
[pid 12358] close(3)                    = 0
[pid 12358] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12358] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12358] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12358] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12358] open("./bus", O_RDONLY)     = 3
[pid 12358] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12358] exit_group(0)               = ?
[pid 12358] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12358, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12359
./strace-static-x86_64: Process 12359 attached
[pid 12359] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12359] setpgid(0, 0)               = 0
[pid 12359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12359] write(3, "1000", 4)         = 4
[pid 12359] close(3)                    = 0
[pid 12359] memfd_create("syzkaller", 0) = 3
[pid 12359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12359] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12359] munmap(0x7fd990e3c000, 32768) = 0
[pid 12359] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12359] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12359] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12359] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12359] close(4)                    = 0
[pid 12359] close(3)                    = 0
[pid 12359] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12359] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12359] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12359] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12359] open("./bus", O_RDONLY)     = 3
[pid 12359] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12359] exit_group(0)               = ?
[pid 12359] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12359, 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=0x55555567f5d0) = 12360
./strace-static-x86_64: Process 12360 attached
[pid 12360] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12360] setpgid(0, 0)               = 0
[pid 12360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12360] write(3, "1000", 4)         = 4
[pid 12360] close(3)                    = 0
[pid 12360] memfd_create("syzkaller", 0) = 3
[pid 12360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12360] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12360] munmap(0x7fd990e3c000, 32768) = 0
[pid 12360] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12360] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12360] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12360] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12360] close(4)                    = 0
[pid 12360] close(3)                    = 0
[pid 12360] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12360] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12360] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12360] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12360] open("./bus", O_RDONLY)     = 3
[pid 12360] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12360] exit_group(0)               = ?
[pid 12360] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12360, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12361
./strace-static-x86_64: Process 12361 attached
[pid 12361] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12361] setpgid(0, 0)               = 0
[pid 12361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12361] write(3, "1000", 4)         = 4
[pid 12361] close(3)                    = 0
[pid 12361] memfd_create("syzkaller", 0) = 3
[pid 12361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12361] munmap(0x7fd990e3c000, 32768) = 0
[pid 12361] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12361] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12361] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12361] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12361] close(4)                    = 0
[pid 12361] close(3)                    = 0
[pid 12361] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12361] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12361] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12361] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12361] open("./bus", O_RDONLY)     = 3
[pid 12361] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12361] exit_group(0)               = ?
[pid 12361] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12361, 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 12362 attached
, child_tidptr=0x55555567f5d0) = 12362
[pid 12362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12362] setpgid(0, 0)               = 0
[pid 12362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12362] write(3, "1000", 4)         = 4
[pid 12362] close(3)                    = 0
[pid 12362] memfd_create("syzkaller", 0) = 3
[pid 12362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12362] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12362] munmap(0x7fd990e3c000, 32768) = 0
[pid 12362] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12362] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12362] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12362] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12362] close(4)                    = 0
[pid 12362] close(3)                    = 0
[pid 12362] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12362] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12362] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12362] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12362] open("./bus", O_RDONLY)     = 3
[pid 12362] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12362] exit_group(0)               = ?
[pid 12362] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12362, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12363
./strace-static-x86_64: Process 12363 attached
[pid 12363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12363] setpgid(0, 0)               = 0
[pid 12363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12363] write(3, "1000", 4)         = 4
[pid 12363] close(3)                    = 0
[pid 12363] memfd_create("syzkaller", 0) = 3
[pid 12363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12363] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12363] munmap(0x7fd990e3c000, 32768) = 0
[pid 12363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12363] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12363] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12363] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12363] close(4)                    = 0
[pid 12363] close(3)                    = 0
[pid 12363] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12363] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12363] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12363] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12363] open("./bus", O_RDONLY)     = 3
[pid 12363] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12363] exit_group(0)               = ?
[pid 12363] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12363, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12364
./strace-static-x86_64: Process 12364 attached
[pid 12364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12364] setpgid(0, 0)               = 0
[pid 12364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12364] write(3, "1000", 4)         = 4
[pid 12364] close(3)                    = 0
[pid 12364] memfd_create("syzkaller", 0) = 3
[pid 12364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12364] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12364] munmap(0x7fd990e3c000, 32768) = 0
[pid 12364] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12364] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12364] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12364] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12364] close(4)                    = 0
[pid 12364] close(3)                    = 0
[pid 12364] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12364] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12364] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12364] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12364] open("./bus", O_RDONLY)     = 3
[pid 12364] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12364] exit_group(0)               = ?
[pid 12364] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12364, 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 12365 attached
, child_tidptr=0x55555567f5d0) = 12365
[pid 12365] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12365] setpgid(0, 0)               = 0
[pid 12365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12365] write(3, "1000", 4)         = 4
[pid 12365] close(3)                    = 0
[pid 12365] memfd_create("syzkaller", 0) = 3
[pid 12365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12365] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12365] munmap(0x7fd990e3c000, 32768) = 0
[pid 12365] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12365] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12365] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12365] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12365] close(4)                    = 0
[pid 12365] close(3)                    = 0
[pid 12365] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12365] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12365] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12365] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12365] open("./bus", O_RDONLY)     = 3
[pid 12365] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12365] exit_group(0)               = ?
[pid 12365] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12365, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12366 attached
, child_tidptr=0x55555567f5d0) = 12366
[pid 12366] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12366] setpgid(0, 0)               = 0
[pid 12366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12366] write(3, "1000", 4)         = 4
[pid 12366] close(3)                    = 0
[pid 12366] memfd_create("syzkaller", 0) = 3
[pid 12366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12366] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12366] munmap(0x7fd990e3c000, 32768) = 0
[pid 12366] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12366] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12366] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12366] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12366] close(4)                    = 0
[pid 12366] close(3)                    = 0
[pid 12366] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12366] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12366] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12366] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12366] open("./bus", O_RDONLY)     = 3
[pid 12366] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12366] exit_group(0)               = ?
[pid 12366] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12366, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12367 attached
, child_tidptr=0x55555567f5d0) = 12367
[pid 12367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12367] setpgid(0, 0)               = 0
[pid 12367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12367] write(3, "1000", 4)         = 4
[pid 12367] close(3)                    = 0
[pid 12367] memfd_create("syzkaller", 0) = 3
[pid 12367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12367] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12367] munmap(0x7fd990e3c000, 32768) = 0
[pid 12367] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12367] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12367] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12367] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12367] close(4)                    = 0
[pid 12367] close(3)                    = 0
[pid 12367] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12367] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12367] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12367] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12367] open("./bus", O_RDONLY)     = 3
[pid 12367] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12367] exit_group(0)               = ?
[pid 12367] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12367, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12368
./strace-static-x86_64: Process 12368 attached
[pid 12368] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12368] setpgid(0, 0)               = 0
[pid 12368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12368] write(3, "1000", 4)         = 4
[pid 12368] close(3)                    = 0
[pid 12368] memfd_create("syzkaller", 0) = 3
[pid 12368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12368] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12368] munmap(0x7fd990e3c000, 32768) = 0
[pid 12368] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12368] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12368] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12368] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12368] close(4)                    = 0
[pid 12368] close(3)                    = 0
[pid 12368] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12368] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12368] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12368] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12368] open("./bus", O_RDONLY)     = 3
[pid 12368] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12368] exit_group(0)               = ?
[pid 12368] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12368, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12369
./strace-static-x86_64: Process 12369 attached
[pid 12369] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12369] setpgid(0, 0)               = 0
[pid 12369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12369] write(3, "1000", 4)         = 4
[pid 12369] close(3)                    = 0
[pid 12369] memfd_create("syzkaller", 0) = 3
[pid 12369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12369] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12369] munmap(0x7fd990e3c000, 32768) = 0
[pid 12369] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12369] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12369] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12369] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12369] close(4)                    = 0
[pid 12369] close(3)                    = 0
[pid 12369] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12369] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12369] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12369] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12369] open("./bus", O_RDONLY)     = 3
[pid 12369] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12369] exit_group(0)               = ?
[pid 12369] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12369, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12370 attached
, child_tidptr=0x55555567f5d0) = 12370
[pid 12370] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12370] setpgid(0, 0)               = 0
[pid 12370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12370] write(3, "1000", 4)         = 4
[pid 12370] close(3)                    = 0
[pid 12370] memfd_create("syzkaller", 0) = 3
[pid 12370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12370] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12370] munmap(0x7fd990e3c000, 32768) = 0
[pid 12370] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12370] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12370] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12370] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12370] close(4)                    = 0
[pid 12370] close(3)                    = 0
[pid 12370] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12370] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12370] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12370] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12370] open("./bus", O_RDONLY)     = 3
[pid 12370] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12370] exit_group(0)               = ?
[pid 12370] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12370, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12371
./strace-static-x86_64: Process 12371 attached
[pid 12371] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12371] setpgid(0, 0)               = 0
[pid 12371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12371] write(3, "1000", 4)         = 4
[pid 12371] close(3)                    = 0
[pid 12371] memfd_create("syzkaller", 0) = 3
[pid 12371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12371] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12371] munmap(0x7fd990e3c000, 32768) = 0
[pid 12371] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12371] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12371] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12371] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12371] close(4)                    = 0
[pid 12371] close(3)                    = 0
[pid 12371] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12371] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12371] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12371] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12371] open("./bus", O_RDONLY)     = 3
[pid 12371] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12371] exit_group(0)               = ?
[pid 12371] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12371, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12372
./strace-static-x86_64: Process 12372 attached
[pid 12372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12372] setpgid(0, 0)               = 0
[pid 12372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12372] write(3, "1000", 4)         = 4
[pid 12372] close(3)                    = 0
[pid 12372] memfd_create("syzkaller", 0) = 3
[pid 12372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12372] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12372] munmap(0x7fd990e3c000, 32768) = 0
[pid 12372] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12372] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12372] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12372] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12372] close(4)                    = 0
[pid 12372] close(3)                    = 0
[pid 12372] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12372] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12372] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12372] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12372] open("./bus", O_RDONLY)     = 3
[pid 12372] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12372] exit_group(0)               = ?
[pid 12372] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12372, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12373 attached
, child_tidptr=0x55555567f5d0) = 12373
[pid 12373] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12373] setpgid(0, 0)               = 0
[pid 12373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12373] write(3, "1000", 4)         = 4
[pid 12373] close(3)                    = 0
[pid 12373] memfd_create("syzkaller", 0) = 3
[pid 12373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12373] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12373] munmap(0x7fd990e3c000, 32768) = 0
[pid 12373] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12373] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12373] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12373] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12373] close(4)                    = 0
[pid 12373] close(3)                    = 0
[pid 12373] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12373] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12373] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12373] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12373] open("./bus", O_RDONLY)     = 3
[pid 12373] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12373] exit_group(0)               = ?
[pid 12373] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12373, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12374
./strace-static-x86_64: Process 12374 attached
[pid 12374] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12374] setpgid(0, 0)               = 0
[pid 12374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12374] write(3, "1000", 4)         = 4
[pid 12374] close(3)                    = 0
[pid 12374] memfd_create("syzkaller", 0) = 3
[pid 12374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12374] munmap(0x7fd990e3c000, 32768) = 0
[pid 12374] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12374] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12374] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12374] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12374] close(4)                    = 0
[pid 12374] close(3)                    = 0
[pid 12374] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12374] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12374] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12374] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12374] open("./bus", O_RDONLY)     = 3
[pid 12374] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12374] exit_group(0)               = ?
[pid 12374] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12374, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12375
./strace-static-x86_64: Process 12375 attached
[pid 12375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12375] setpgid(0, 0)               = 0
[pid 12375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12375] write(3, "1000", 4)         = 4
[pid 12375] close(3)                    = 0
[pid 12375] memfd_create("syzkaller", 0) = 3
[pid 12375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12375] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12375] munmap(0x7fd990e3c000, 32768) = 0
[pid 12375] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12375] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12375] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12375] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12375] close(4)                    = 0
[pid 12375] close(3)                    = 0
[pid 12375] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12375] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12375] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12375] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12375] open("./bus", O_RDONLY)     = 3
[pid 12375] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12375] exit_group(0)               = ?
[pid 12375] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12375, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12376
./strace-static-x86_64: Process 12376 attached
[pid 12376] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12376] setpgid(0, 0)               = 0
[pid 12376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12376] write(3, "1000", 4)         = 4
[pid 12376] close(3)                    = 0
[pid 12376] memfd_create("syzkaller", 0) = 3
[pid 12376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12376] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12376] munmap(0x7fd990e3c000, 32768) = 0
[pid 12376] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12376] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12376] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12376] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12376] close(4)                    = 0
[pid 12376] close(3)                    = 0
[pid 12376] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12376] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12376] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12376] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12376] open("./bus", O_RDONLY)     = 3
[pid 12376] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12376] exit_group(0)               = ?
[pid 12376] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12376, 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 12377 attached
 <unfinished ...>
[pid 12377] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12377] setpgid(0, 0)               = 0
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 12377
[pid 12377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12377] write(3, "1000", 4)         = 4
[pid 12377] close(3)                    = 0
[pid 12377] memfd_create("syzkaller", 0) = 3
[pid 12377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12377] munmap(0x7fd990e3c000, 32768) = 0
[pid 12377] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12377] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12377] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12377] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12377] close(4)                    = 0
[pid 12377] close(3)                    = 0
[pid 12377] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12377] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12377] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12377] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12377] open("./bus", O_RDONLY)     = 3
[pid 12377] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12377] exit_group(0)               = ?
[pid 12377] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12377, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12378
./strace-static-x86_64: Process 12378 attached
[pid 12378] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12378] setpgid(0, 0)               = 0
[pid 12378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12378] write(3, "1000", 4)         = 4
[pid 12378] close(3)                    = 0
[pid 12378] memfd_create("syzkaller", 0) = 3
[pid 12378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12378] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12378] munmap(0x7fd990e3c000, 32768) = 0
[pid 12378] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12378] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12378] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12378] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12378] close(4)                    = 0
[pid 12378] close(3)                    = 0
[pid 12378] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12378] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12378] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12378] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12378] open("./bus", O_RDONLY)     = 3
[pid 12378] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12378] exit_group(0)               = ?
[pid 12378] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12378, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12379
./strace-static-x86_64: Process 12379 attached
[pid 12379] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12379] setpgid(0, 0)               = 0
[pid 12379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12379] write(3, "1000", 4)         = 4
[pid 12379] close(3)                    = 0
[pid 12379] memfd_create("syzkaller", 0) = 3
[pid 12379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12379] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12379] munmap(0x7fd990e3c000, 32768) = 0
[pid 12379] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12379] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12379] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12379] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12379] close(4)                    = 0
[pid 12379] close(3)                    = 0
[pid 12379] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12379] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12379] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12379] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12379] open("./bus", O_RDONLY)     = 3
[pid 12379] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12379] exit_group(0)               = ?
[pid 12379] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12379, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12380
./strace-static-x86_64: Process 12380 attached
[pid 12380] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12380] setpgid(0, 0)               = 0
[pid 12380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12380] write(3, "1000", 4)         = 4
[pid 12380] close(3)                    = 0
[pid 12380] memfd_create("syzkaller", 0) = 3
[pid 12380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12380] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12380] munmap(0x7fd990e3c000, 32768) = 0
[pid 12380] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12380] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12380] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12380] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12380] close(4)                    = 0
[pid 12380] close(3)                    = 0
[pid 12380] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12380] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12380] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12380] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12380] open("./bus", O_RDONLY)     = 3
[pid 12380] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12380] exit_group(0)               = ?
[pid 12380] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12380, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12381
./strace-static-x86_64: Process 12381 attached
[pid 12381] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12381] setpgid(0, 0)               = 0
[pid 12381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12381] write(3, "1000", 4)         = 4
[pid 12381] close(3)                    = 0
[pid 12381] memfd_create("syzkaller", 0) = 3
[pid 12381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12381] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12381] munmap(0x7fd990e3c000, 32768) = 0
[pid 12381] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12381] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12381] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12381] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12381] close(4)                    = 0
[pid 12381] close(3)                    = 0
[pid 12381] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12381] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12381] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12381] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12381] open("./bus", O_RDONLY)     = 3
[pid 12381] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12381] exit_group(0)               = ?
[pid 12381] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12381, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12382
./strace-static-x86_64: Process 12382 attached
[pid 12382] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12382] setpgid(0, 0)               = 0
[pid 12382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12382] write(3, "1000", 4)         = 4
[pid 12382] close(3)                    = 0
[pid 12382] memfd_create("syzkaller", 0) = 3
[pid 12382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12382] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12382] munmap(0x7fd990e3c000, 32768) = 0
[pid 12382] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12382] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12382] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12382] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12382] close(4)                    = 0
[pid 12382] close(3)                    = 0
[pid 12382] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12382] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12382] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12382] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12382] open("./bus", O_RDONLY)     = 3
[pid 12382] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12382] exit_group(0)               = ?
[pid 12382] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12382, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12383 attached
, child_tidptr=0x55555567f5d0) = 12383
[pid 12383] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12383] setpgid(0, 0)               = 0
[pid 12383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12383] write(3, "1000", 4)         = 4
[pid 12383] close(3)                    = 0
[pid 12383] memfd_create("syzkaller", 0) = 3
[pid 12383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12383] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12383] munmap(0x7fd990e3c000, 32768) = 0
[pid 12383] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12383] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12383] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12383] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12383] close(4)                    = 0
[pid 12383] close(3)                    = 0
[pid 12383] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12383] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12383] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12383] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12383] open("./bus", O_RDONLY)     = 3
[pid 12383] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12383] exit_group(0)               = ?
[pid 12383] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12383, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12384
./strace-static-x86_64: Process 12384 attached
[pid 12384] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12384] setpgid(0, 0)               = 0
[pid 12384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12384] write(3, "1000", 4)         = 4
[pid 12384] close(3)                    = 0
[pid 12384] memfd_create("syzkaller", 0) = 3
[pid 12384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12384] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12384] munmap(0x7fd990e3c000, 32768) = 0
[pid 12384] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12384] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12384] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12384] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12384] close(4)                    = 0
[pid 12384] close(3)                    = 0
[pid 12384] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12384] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12384] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12384] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12384] open("./bus", O_RDONLY)     = 3
[pid 12384] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12384] exit_group(0)               = ?
[pid 12384] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12384, 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 12385 attached
, child_tidptr=0x55555567f5d0) = 12385
[pid 12385] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12385] setpgid(0, 0)               = 0
[pid 12385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12385] write(3, "1000", 4)         = 4
[pid 12385] close(3)                    = 0
[pid 12385] memfd_create("syzkaller", 0) = 3
[pid 12385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12385] munmap(0x7fd990e3c000, 32768) = 0
[pid 12385] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12385] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12385] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12385] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12385] close(4)                    = 0
[pid 12385] close(3)                    = 0
[pid 12385] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12385] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12385] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12385] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12385] open("./bus", O_RDONLY)     = 3
[pid 12385] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12385] exit_group(0)               = ?
[pid 12385] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12385, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12386
./strace-static-x86_64: Process 12386 attached
[pid 12386] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12386] setpgid(0, 0)               = 0
[pid 12386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12386] write(3, "1000", 4)         = 4
[pid 12386] close(3)                    = 0
[pid 12386] memfd_create("syzkaller", 0) = 3
[pid 12386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12386] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12386] munmap(0x7fd990e3c000, 32768) = 0
[pid 12386] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12386] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12386] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12386] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12386] close(4)                    = 0
[pid 12386] close(3)                    = 0
[pid 12386] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12386] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12386] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12386] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12386] open("./bus", O_RDONLY)     = 3
[pid 12386] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12386] exit_group(0)               = ?
[pid 12386] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12386, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12387
./strace-static-x86_64: Process 12387 attached
[pid 12387] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12387] setpgid(0, 0)               = 0
[pid 12387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12387] write(3, "1000", 4)         = 4
[pid 12387] close(3)                    = 0
[pid 12387] memfd_create("syzkaller", 0) = 3
[pid 12387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12387] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12387] munmap(0x7fd990e3c000, 32768) = 0
[pid 12387] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12387] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12387] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12387] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12387] close(4)                    = 0
[pid 12387] close(3)                    = 0
[pid 12387] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12387] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12387] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12387] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12387] open("./bus", O_RDONLY)     = 3
[pid 12387] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12387] exit_group(0)               = ?
[pid 12387] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12387, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12388 attached
, child_tidptr=0x55555567f5d0) = 12388
[pid 12388] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12388] setpgid(0, 0)               = 0
[pid 12388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12388] write(3, "1000", 4)         = 4
[pid 12388] close(3)                    = 0
[pid 12388] memfd_create("syzkaller", 0) = 3
[pid 12388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12388] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12388] munmap(0x7fd990e3c000, 32768) = 0
[pid 12388] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12388] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12388] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12388] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12388] close(4)                    = 0
[pid 12388] close(3)                    = 0
[pid 12388] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12388] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12388] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12388] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12388] open("./bus", O_RDONLY)     = 3
[pid 12388] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12388] exit_group(0)               = ?
[pid 12388] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12388, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12389
./strace-static-x86_64: Process 12389 attached
[pid 12389] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12389] setpgid(0, 0)               = 0
[pid 12389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12389] write(3, "1000", 4)         = 4
[pid 12389] close(3)                    = 0
[pid 12389] memfd_create("syzkaller", 0) = 3
[pid 12389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12389] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12389] munmap(0x7fd990e3c000, 32768) = 0
[pid 12389] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12389] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12389] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12389] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12389] close(4)                    = 0
[pid 12389] close(3)                    = 0
[pid 12389] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12389] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12389] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12389] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12389] open("./bus", O_RDONLY)     = 3
[pid 12389] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12389] exit_group(0)               = ?
[pid 12389] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12389, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12390 attached
, child_tidptr=0x55555567f5d0) = 12390
[pid 12390] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12390] setpgid(0, 0)               = 0
[pid 12390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12390] write(3, "1000", 4)         = 4
[pid 12390] close(3)                    = 0
[pid 12390] memfd_create("syzkaller", 0) = 3
[pid 12390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12390] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12390] munmap(0x7fd990e3c000, 32768) = 0
[pid 12390] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12390] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12390] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12390] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12390] close(4)                    = 0
[pid 12390] close(3)                    = 0
[pid 12390] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12390] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12390] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12390] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12390] open("./bus", O_RDONLY)     = 3
[pid 12390] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12390] exit_group(0)               = ?
[pid 12390] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12390, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12391 attached
, child_tidptr=0x55555567f5d0) = 12391
[pid 12391] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12391] setpgid(0, 0)               = 0
[pid 12391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12391] write(3, "1000", 4)         = 4
[pid 12391] close(3)                    = 0
[pid 12391] memfd_create("syzkaller", 0) = 3
[pid 12391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12391] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12391] munmap(0x7fd990e3c000, 32768) = 0
[pid 12391] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12391] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12391] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12391] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12391] close(4)                    = 0
[pid 12391] close(3)                    = 0
[pid 12391] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12391] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12391] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12391] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12391] open("./bus", O_RDONLY)     = 3
[pid 12391] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12391] exit_group(0)               = ?
[pid 12391] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12391, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12392
./strace-static-x86_64: Process 12392 attached
[pid 12392] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12392] setpgid(0, 0)               = 0
[pid 12392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12392] write(3, "1000", 4)         = 4
[pid 12392] close(3)                    = 0
[pid 12392] memfd_create("syzkaller", 0) = 3
[pid 12392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12392] munmap(0x7fd990e3c000, 32768) = 0
[pid 12392] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12392] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12392] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12392] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12392] close(4)                    = 0
[pid 12392] close(3)                    = 0
[pid 12392] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12392] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12392] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12392] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12392] open("./bus", O_RDONLY)     = 3
[pid 12392] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12392] exit_group(0)               = ?
[pid 12392] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12392, 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=0x55555567f5d0) = 12393
./strace-static-x86_64: Process 12393 attached
[pid 12393] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12393] setpgid(0, 0)               = 0
[pid 12393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12393] write(3, "1000", 4)         = 4
[pid 12393] close(3)                    = 0
[pid 12393] memfd_create("syzkaller", 0) = 3
[pid 12393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12393] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12393] munmap(0x7fd990e3c000, 32768) = 0
[pid 12393] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12393] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12393] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12393] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12393] close(4)                    = 0
[pid 12393] close(3)                    = 0
[pid 12393] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12393] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12393] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12393] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12393] open("./bus", O_RDONLY)     = 3
[pid 12393] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12393] exit_group(0)               = ?
[pid 12393] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12393, 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=0x55555567f5d0) = 12394
./strace-static-x86_64: Process 12394 attached
[pid 12394] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12394] setpgid(0, 0)               = 0
[pid 12394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12394] write(3, "1000", 4)         = 4
[pid 12394] close(3)                    = 0
[pid 12394] memfd_create("syzkaller", 0) = 3
[pid 12394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12394] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12394] munmap(0x7fd990e3c000, 32768) = 0
[pid 12394] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12394] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12394] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12394] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12394] close(4)                    = 0
[pid 12394] close(3)                    = 0
[pid 12394] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12394] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12394] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12394] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12394] open("./bus", O_RDONLY)     = 3
[pid 12394] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12394] exit_group(0)               = ?
[pid 12394] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12394, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12395
./strace-static-x86_64: Process 12395 attached
[pid 12395] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12395] setpgid(0, 0)               = 0
[pid 12395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12395] write(3, "1000", 4)         = 4
[pid 12395] close(3)                    = 0
[pid 12395] memfd_create("syzkaller", 0) = 3
[pid 12395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12395] munmap(0x7fd990e3c000, 32768) = 0
[pid 12395] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12395] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12395] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12395] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12395] close(4)                    = 0
[pid 12395] close(3)                    = 0
[pid 12395] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12395] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12395] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12395] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12395] open("./bus", O_RDONLY)     = 3
[pid 12395] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12395] exit_group(0)               = ?
[pid 12395] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12395, 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 12396 attached
, child_tidptr=0x55555567f5d0) = 12396
[pid 12396] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12396] setpgid(0, 0)               = 0
[pid 12396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12396] write(3, "1000", 4)         = 4
[pid 12396] close(3)                    = 0
[pid 12396] memfd_create("syzkaller", 0) = 3
[pid 12396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12396] munmap(0x7fd990e3c000, 32768) = 0
[pid 12396] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12396] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12396] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12396] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12396] close(4)                    = 0
[pid 12396] close(3)                    = 0
[pid 12396] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12396] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12396] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12396] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12396] open("./bus", O_RDONLY)     = 3
[pid 12396] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12396] exit_group(0)               = ?
[pid 12396] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12396, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12397 attached
, child_tidptr=0x55555567f5d0) = 12397
[pid 12397] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12397] setpgid(0, 0)               = 0
[pid 12397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12397] write(3, "1000", 4)         = 4
[pid 12397] close(3)                    = 0
[pid 12397] memfd_create("syzkaller", 0) = 3
[pid 12397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12397] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12397] munmap(0x7fd990e3c000, 32768) = 0
[pid 12397] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12397] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12397] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12397] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12397] close(4)                    = 0
[pid 12397] close(3)                    = 0
[pid 12397] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12397] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12397] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12397] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12397] open("./bus", O_RDONLY)     = 3
[pid 12397] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12397] exit_group(0)               = ?
[pid 12397] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12397, 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 12398 attached
, child_tidptr=0x55555567f5d0) = 12398
[pid 12398] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12398] setpgid(0, 0)               = 0
[pid 12398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12398] write(3, "1000", 4)         = 4
[pid 12398] close(3)                    = 0
[pid 12398] memfd_create("syzkaller", 0) = 3
[pid 12398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12398] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12398] munmap(0x7fd990e3c000, 32768) = 0
[pid 12398] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12398] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12398] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12398] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12398] close(4)                    = 0
[pid 12398] close(3)                    = 0
[pid 12398] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12398] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12398] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12398] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12398] open("./bus", O_RDONLY)     = 3
[pid 12398] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12398] exit_group(0)               = ?
[pid 12398] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12398, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12399
./strace-static-x86_64: Process 12399 attached
[pid 12399] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12399] setpgid(0, 0)               = 0
[pid 12399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12399] write(3, "1000", 4)         = 4
[pid 12399] close(3)                    = 0
[pid 12399] memfd_create("syzkaller", 0) = 3
[pid 12399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12399] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12399] munmap(0x7fd990e3c000, 32768) = 0
[pid 12399] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12399] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12399] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12399] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12399] close(4)                    = 0
[pid 12399] close(3)                    = 0
[pid 12399] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12399] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12399] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12399] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12399] open("./bus", O_RDONLY)     = 3
[pid 12399] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12399] exit_group(0)               = ?
[pid 12399] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12399, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12400
./strace-static-x86_64: Process 12400 attached
[pid 12400] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12400] setpgid(0, 0)               = 0
[pid 12400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12400] write(3, "1000", 4)         = 4
[pid 12400] close(3)                    = 0
[pid 12400] memfd_create("syzkaller", 0) = 3
[pid 12400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12400] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12400] munmap(0x7fd990e3c000, 32768) = 0
[pid 12400] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12400] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12400] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12400] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12400] close(4)                    = 0
[pid 12400] close(3)                    = 0
[pid 12400] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12400] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12400] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12400] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12400] open("./bus", O_RDONLY)     = 3
[pid 12400] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12400] exit_group(0)               = ?
[pid 12400] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12400, 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=0x55555567f5d0) = 12401
./strace-static-x86_64: Process 12401 attached
[pid 12401] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12401] setpgid(0, 0)               = 0
[pid 12401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12401] write(3, "1000", 4)         = 4
[pid 12401] close(3)                    = 0
[pid 12401] memfd_create("syzkaller", 0) = 3
[pid 12401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12401] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12401] munmap(0x7fd990e3c000, 32768) = 0
[pid 12401] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12401] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12401] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12401] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12401] close(4)                    = 0
[pid 12401] close(3)                    = 0
[pid 12401] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12401] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12401] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12401] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12401] open("./bus", O_RDONLY)     = 3
[pid 12401] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12401] exit_group(0)               = ?
[pid 12401] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12401, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12402
./strace-static-x86_64: Process 12402 attached
[pid 12402] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12402] setpgid(0, 0)               = 0
[pid 12402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12402] write(3, "1000", 4)         = 4
[pid 12402] close(3)                    = 0
[pid 12402] memfd_create("syzkaller", 0) = 3
[pid 12402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12402] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12402] munmap(0x7fd990e3c000, 32768) = 0
[pid 12402] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12402] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12402] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12402] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12402] close(4)                    = 0
[pid 12402] close(3)                    = 0
[pid 12402] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12402] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12402] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12402] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12402] open("./bus", O_RDONLY)     = 3
[pid 12402] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12402] exit_group(0)               = ?
[pid 12402] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12402, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12403
./strace-static-x86_64: Process 12403 attached
[pid 12403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12403] setpgid(0, 0)               = 0
[pid 12403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12403] write(3, "1000", 4)         = 4
[pid 12403] close(3)                    = 0
[pid 12403] memfd_create("syzkaller", 0) = 3
[pid 12403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12403] munmap(0x7fd990e3c000, 32768) = 0
[pid 12403] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12403] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12403] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12403] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12403] close(4)                    = 0
[pid 12403] close(3)                    = 0
[pid 12403] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12403] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12403] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12403] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12403] open("./bus", O_RDONLY)     = 3
[pid 12403] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12403] exit_group(0)               = ?
[pid 12403] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12403, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12404
./strace-static-x86_64: Process 12404 attached
[pid 12404] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12404] setpgid(0, 0)               = 0
[pid 12404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12404] write(3, "1000", 4)         = 4
[pid 12404] close(3)                    = 0
[pid 12404] memfd_create("syzkaller", 0) = 3
[pid 12404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12404] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12404] munmap(0x7fd990e3c000, 32768) = 0
[pid 12404] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12404] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12404] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12404] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12404] close(4)                    = 0
[pid 12404] close(3)                    = 0
[pid 12404] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12404] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12404] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12404] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12404] open("./bus", O_RDONLY)     = 3
[pid 12404] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12404] exit_group(0)               = ?
[pid 12404] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12404, 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=0x55555567f5d0) = 12405
./strace-static-x86_64: Process 12405 attached
[pid 12405] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12405] setpgid(0, 0)               = 0
[pid 12405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12405] write(3, "1000", 4)         = 4
[pid 12405] close(3)                    = 0
[pid 12405] memfd_create("syzkaller", 0) = 3
[pid 12405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12405] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12405] munmap(0x7fd990e3c000, 32768) = 0
[pid 12405] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12405] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12405] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12405] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12405] close(4)                    = 0
[pid 12405] close(3)                    = 0
[pid 12405] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12405] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12405] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12405] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12405] open("./bus", O_RDONLY)     = 3
[pid 12405] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12405] exit_group(0)               = ?
[pid 12405] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12405, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12406
./strace-static-x86_64: Process 12406 attached
[pid 12406] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12406] setpgid(0, 0)               = 0
[pid 12406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12406] write(3, "1000", 4)         = 4
[pid 12406] close(3)                    = 0
[pid 12406] memfd_create("syzkaller", 0) = 3
[pid 12406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12406] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12406] munmap(0x7fd990e3c000, 32768) = 0
[pid 12406] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12406] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12406] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12406] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12406] close(4)                    = 0
[pid 12406] close(3)                    = 0
[pid 12406] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12406] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12406] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12406] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12406] open("./bus", O_RDONLY)     = 3
[pid 12406] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12406] exit_group(0)               = ?
[pid 12406] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12406, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12407
./strace-static-x86_64: Process 12407 attached
[pid 12407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12407] setpgid(0, 0)               = 0
[pid 12407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12407] write(3, "1000", 4)         = 4
[pid 12407] close(3)                    = 0
[pid 12407] memfd_create("syzkaller", 0) = 3
[pid 12407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12407] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12407] munmap(0x7fd990e3c000, 32768) = 0
[pid 12407] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12407] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12407] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12407] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12407] close(4)                    = 0
[pid 12407] close(3)                    = 0
[pid 12407] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12407] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12407] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12407] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12407] open("./bus", O_RDONLY)     = 3
[pid 12407] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12407] exit_group(0)               = ?
[pid 12407] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12407, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12408 attached
, child_tidptr=0x55555567f5d0) = 12408
[pid 12408] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12408] setpgid(0, 0)               = 0
[pid 12408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12408] write(3, "1000", 4)         = 4
[pid 12408] close(3)                    = 0
[pid 12408] memfd_create("syzkaller", 0) = 3
[pid 12408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12408] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12408] munmap(0x7fd990e3c000, 32768) = 0
[pid 12408] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12408] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12408] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12408] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12408] close(4)                    = 0
[pid 12408] close(3)                    = 0
[pid 12408] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12408] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12408] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12408] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12408] open("./bus", O_RDONLY)     = 3
[pid 12408] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12408] exit_group(0)               = ?
[pid 12408] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12408, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12409
./strace-static-x86_64: Process 12409 attached
[pid 12409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12409] setpgid(0, 0)               = 0
[pid 12409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12409] write(3, "1000", 4)         = 4
[pid 12409] close(3)                    = 0
[pid 12409] memfd_create("syzkaller", 0) = 3
[pid 12409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12409] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12409] munmap(0x7fd990e3c000, 32768) = 0
[pid 12409] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12409] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12409] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12409] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12409] close(4)                    = 0
[pid 12409] close(3)                    = 0
[pid 12409] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12409] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12409] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12409] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12409] open("./bus", O_RDONLY)     = 3
[pid 12409] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12409] exit_group(0)               = ?
[pid 12409] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12409, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12410
./strace-static-x86_64: Process 12410 attached
[pid 12410] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12410] setpgid(0, 0)               = 0
[pid 12410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12410] write(3, "1000", 4)         = 4
[pid 12410] close(3)                    = 0
[pid 12410] memfd_create("syzkaller", 0) = 3
[pid 12410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12410] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12410] munmap(0x7fd990e3c000, 32768) = 0
[pid 12410] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12410] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12410] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12410] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12410] close(4)                    = 0
[pid 12410] close(3)                    = 0
[pid 12410] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12410] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12410] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12410] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12410] open("./bus", O_RDONLY)     = 3
[pid 12410] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12410] exit_group(0)               = ?
[pid 12410] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12410, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12411
./strace-static-x86_64: Process 12411 attached
[pid 12411] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12411] setpgid(0, 0)               = 0
[pid 12411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12411] write(3, "1000", 4)         = 4
[pid 12411] close(3)                    = 0
[pid 12411] memfd_create("syzkaller", 0) = 3
[pid 12411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12411] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12411] munmap(0x7fd990e3c000, 32768) = 0
[pid 12411] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12411] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12411] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12411] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12411] close(4)                    = 0
[pid 12411] close(3)                    = 0
[pid 12411] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12411] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12411] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12411] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12411] open("./bus", O_RDONLY)     = 3
[pid 12411] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12411] exit_group(0)               = ?
[pid 12411] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12411, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12412
./strace-static-x86_64: Process 12412 attached
[pid 12412] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12412] setpgid(0, 0)               = 0
[pid 12412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12412] write(3, "1000", 4)         = 4
[pid 12412] close(3)                    = 0
[pid 12412] memfd_create("syzkaller", 0) = 3
[pid 12412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12412] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12412] munmap(0x7fd990e3c000, 32768) = 0
[pid 12412] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12412] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12412] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12412] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12412] close(4)                    = 0
[pid 12412] close(3)                    = 0
[pid 12412] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12412] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12412] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12412] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12412] open("./bus", O_RDONLY)     = 3
[pid 12412] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12412] exit_group(0)               = ?
[pid 12412] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12412, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12413 attached
, child_tidptr=0x55555567f5d0) = 12413
[pid 12413] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12413] setpgid(0, 0)               = 0
[pid 12413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12413] write(3, "1000", 4)         = 4
[pid 12413] close(3)                    = 0
[pid 12413] memfd_create("syzkaller", 0) = 3
[pid 12413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12413] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12413] munmap(0x7fd990e3c000, 32768) = 0
[pid 12413] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12413] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12413] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12413] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12413] close(4)                    = 0
[pid 12413] close(3)                    = 0
[pid 12413] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12413] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12413] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12413] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12413] open("./bus", O_RDONLY)     = 3
[pid 12413] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12413] exit_group(0)               = ?
[pid 12413] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12413, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12414 attached
, child_tidptr=0x55555567f5d0) = 12414
[pid 12414] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12414] setpgid(0, 0)               = 0
[pid 12414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12414] write(3, "1000", 4)         = 4
[pid 12414] close(3)                    = 0
[pid 12414] memfd_create("syzkaller", 0) = 3
[pid 12414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12414] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12414] munmap(0x7fd990e3c000, 32768) = 0
[pid 12414] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12414] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12414] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12414] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12414] close(4)                    = 0
[pid 12414] close(3)                    = 0
[pid 12414] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12414] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12414] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12414] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12414] open("./bus", O_RDONLY)     = 3
[pid 12414] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12414] exit_group(0)               = ?
[pid 12414] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12414, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12415
./strace-static-x86_64: Process 12415 attached
[pid 12415] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12415] setpgid(0, 0)               = 0
[pid 12415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12415] write(3, "1000", 4)         = 4
[pid 12415] close(3)                    = 0
[pid 12415] memfd_create("syzkaller", 0) = 3
[pid 12415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12415] munmap(0x7fd990e3c000, 32768) = 0
[pid 12415] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12415] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12415] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12415] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12415] close(4)                    = 0
[pid 12415] close(3)                    = 0
[pid 12415] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12415] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12415] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12415] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12415] open("./bus", O_RDONLY)     = 3
[pid 12415] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12415] exit_group(0)               = ?
[pid 12415] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12415, 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 12416 attached
, child_tidptr=0x55555567f5d0) = 12416
[pid 12416] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12416] setpgid(0, 0)               = 0
[pid 12416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12416] write(3, "1000", 4)         = 4
[pid 12416] close(3)                    = 0
[pid 12416] memfd_create("syzkaller", 0) = 3
[pid 12416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12416] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12416] munmap(0x7fd990e3c000, 32768) = 0
[pid 12416] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12416] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12416] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12416] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12416] close(4)                    = 0
[pid 12416] close(3)                    = 0
[pid 12416] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12416] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12416] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12416] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12416] open("./bus", O_RDONLY)     = 3
[pid 12416] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12416] exit_group(0)               = ?
[pid 12416] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12416, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12417
./strace-static-x86_64: Process 12417 attached
[pid 12417] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12417] setpgid(0, 0)               = 0
[pid 12417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12417] write(3, "1000", 4)         = 4
[pid 12417] close(3)                    = 0
[pid 12417] memfd_create("syzkaller", 0) = 3
[pid 12417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12417] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12417] munmap(0x7fd990e3c000, 32768) = 0
[pid 12417] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12417] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12417] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12417] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12417] close(4)                    = 0
[pid 12417] close(3)                    = 0
[pid 12417] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12417] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12417] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12417] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12417] open("./bus", O_RDONLY)     = 3
[pid 12417] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12417] exit_group(0)               = ?
[pid 12417] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12417, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12418
./strace-static-x86_64: Process 12418 attached
[pid 12418] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12418] setpgid(0, 0)               = 0
[pid 12418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12418] write(3, "1000", 4)         = 4
[pid 12418] close(3)                    = 0
[pid 12418] memfd_create("syzkaller", 0) = 3
[pid 12418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12418] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12418] munmap(0x7fd990e3c000, 32768) = 0
[pid 12418] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12418] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12418] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12418] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12418] close(4)                    = 0
[pid 12418] close(3)                    = 0
[pid 12418] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12418] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12418] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12418] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12418] open("./bus", O_RDONLY)     = 3
[pid 12418] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12418] exit_group(0)               = ?
[pid 12418] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12418, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12419
./strace-static-x86_64: Process 12419 attached
[pid 12419] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12419] setpgid(0, 0)               = 0
[pid 12419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12419] write(3, "1000", 4)         = 4
[pid 12419] close(3)                    = 0
[pid 12419] memfd_create("syzkaller", 0) = 3
[pid 12419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12419] munmap(0x7fd990e3c000, 32768) = 0
[pid 12419] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12419] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12419] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12419] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12419] close(4)                    = 0
[pid 12419] close(3)                    = 0
[pid 12419] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12419] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12419] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12419] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12419] open("./bus", O_RDONLY)     = 3
[pid 12419] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12419] exit_group(0)               = ?
[pid 12419] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12419, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12420 attached
, child_tidptr=0x55555567f5d0) = 12420
[pid 12420] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12420] setpgid(0, 0)               = 0
[pid 12420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12420] write(3, "1000", 4)         = 4
[pid 12420] close(3)                    = 0
[pid 12420] memfd_create("syzkaller", 0) = 3
[pid 12420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12420] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12420] munmap(0x7fd990e3c000, 32768) = 0
[pid 12420] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12420] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12420] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12420] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12420] close(4)                    = 0
[pid 12420] close(3)                    = 0
[pid 12420] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12420] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12420] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12420] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12420] open("./bus", O_RDONLY)     = 3
[pid 12420] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12420] exit_group(0)               = ?
[pid 12420] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12420, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12421
./strace-static-x86_64: Process 12421 attached
[pid 12421] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12421] setpgid(0, 0)               = 0
[pid 12421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12421] write(3, "1000", 4)         = 4
[pid 12421] close(3)                    = 0
[pid 12421] memfd_create("syzkaller", 0) = 3
[pid 12421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12421] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12421] munmap(0x7fd990e3c000, 32768) = 0
[pid 12421] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12421] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12421] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12421] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12421] close(4)                    = 0
[pid 12421] close(3)                    = 0
[pid 12421] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12421] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12421] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12421] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12421] open("./bus", O_RDONLY)     = 3
[pid 12421] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12421] exit_group(0)               = ?
[pid 12421] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12421, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12422
./strace-static-x86_64: Process 12422 attached
[pid 12422] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12422] setpgid(0, 0)               = 0
[pid 12422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12422] write(3, "1000", 4)         = 4
[pid 12422] close(3)                    = 0
[pid 12422] memfd_create("syzkaller", 0) = 3
[pid 12422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12422] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12422] munmap(0x7fd990e3c000, 32768) = 0
[pid 12422] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12422] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12422] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12422] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12422] close(4)                    = 0
[pid 12422] close(3)                    = 0
[pid 12422] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12422] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12422] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12422] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12422] open("./bus", O_RDONLY)     = 3
[pid 12422] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12422] exit_group(0)               = ?
[pid 12422] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12422, 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 12423 attached
, child_tidptr=0x55555567f5d0) = 12423
[pid 12423] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12423] setpgid(0, 0)               = 0
[pid 12423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12423] write(3, "1000", 4)         = 4
[pid 12423] close(3)                    = 0
[pid 12423] memfd_create("syzkaller", 0) = 3
[pid 12423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12423] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12423] munmap(0x7fd990e3c000, 32768) = 0
[pid 12423] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12423] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12423] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12423] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12423] close(4)                    = 0
[pid 12423] close(3)                    = 0
[pid 12423] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12423] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12423] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12423] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12423] open("./bus", O_RDONLY)     = 3
[pid 12423] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12423] exit_group(0)               = ?
[pid 12423] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12423, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12424
./strace-static-x86_64: Process 12424 attached
[pid 12424] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12424] setpgid(0, 0)               = 0
[pid 12424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12424] write(3, "1000", 4)         = 4
[pid 12424] close(3)                    = 0
[pid 12424] memfd_create("syzkaller", 0) = 3
[pid 12424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12424] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12424] munmap(0x7fd990e3c000, 32768) = 0
[pid 12424] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12424] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12424] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12424] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12424] close(4)                    = 0
[pid 12424] close(3)                    = 0
[pid 12424] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12424] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12424] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12424] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12424] open("./bus", O_RDONLY)     = 3
[pid 12424] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12424] exit_group(0)               = ?
[pid 12424] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12424, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12425
./strace-static-x86_64: Process 12425 attached
[pid 12425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12425] setpgid(0, 0)               = 0
[pid 12425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12425] write(3, "1000", 4)         = 4
[pid 12425] close(3)                    = 0
[pid 12425] memfd_create("syzkaller", 0) = 3
[pid 12425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12425] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12425] munmap(0x7fd990e3c000, 32768) = 0
[pid 12425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12425] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12425] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12425] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12425] close(4)                    = 0
[pid 12425] close(3)                    = 0
[pid 12425] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12425] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12425] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12425] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12425] open("./bus", O_RDONLY)     = 3
[pid 12425] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12425] exit_group(0)               = ?
[pid 12425] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12425, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12426
./strace-static-x86_64: Process 12426 attached
[pid 12426] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12426] setpgid(0, 0)               = 0
[pid 12426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12426] write(3, "1000", 4)         = 4
[pid 12426] close(3)                    = 0
[pid 12426] memfd_create("syzkaller", 0) = 3
[pid 12426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12426] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12426] munmap(0x7fd990e3c000, 32768) = 0
[pid 12426] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12426] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12426] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12426] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12426] close(4)                    = 0
[pid 12426] close(3)                    = 0
[pid 12426] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12426] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12426] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12426] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12426] open("./bus", O_RDONLY)     = 3
[pid 12426] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12426] exit_group(0)               = ?
[pid 12426] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12426, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12427
./strace-static-x86_64: Process 12427 attached
[pid 12427] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12427] setpgid(0, 0)               = 0
[pid 12427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12427] write(3, "1000", 4)         = 4
[pid 12427] close(3)                    = 0
[pid 12427] memfd_create("syzkaller", 0) = 3
[pid 12427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12427] munmap(0x7fd990e3c000, 32768) = 0
[pid 12427] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12427] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12427] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12427] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12427] close(4)                    = 0
[pid 12427] close(3)                    = 0
[pid 12427] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12427] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12427] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12427] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12427] open("./bus", O_RDONLY)     = 3
[pid 12427] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12427] exit_group(0)               = ?
[pid 12427] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12427, 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 12428 attached
, child_tidptr=0x55555567f5d0) = 12428
[pid 12428] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12428] setpgid(0, 0)               = 0
[pid 12428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12428] write(3, "1000", 4)         = 4
[pid 12428] close(3)                    = 0
[pid 12428] memfd_create("syzkaller", 0) = 3
[pid 12428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12428] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12428] munmap(0x7fd990e3c000, 32768) = 0
[pid 12428] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12428] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12428] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12428] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12428] close(4)                    = 0
[pid 12428] close(3)                    = 0
[pid 12428] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12428] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12428] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12428] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12428] open("./bus", O_RDONLY)     = 3
[pid 12428] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12428] exit_group(0)               = ?
[pid 12428] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12428, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12429
./strace-static-x86_64: Process 12429 attached
[pid 12429] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12429] setpgid(0, 0)               = 0
[pid 12429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12429] write(3, "1000", 4)         = 4
[pid 12429] close(3)                    = 0
[pid 12429] memfd_create("syzkaller", 0) = 3
[pid 12429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12429] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12429] munmap(0x7fd990e3c000, 32768) = 0
[pid 12429] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12429] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12429] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12429] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12429] close(4)                    = 0
[pid 12429] close(3)                    = 0
[pid 12429] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12429] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12429] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12429] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12429] open("./bus", O_RDONLY)     = 3
[pid 12429] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12429] exit_group(0)               = ?
[pid 12429] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12429, 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=0x55555567f5d0) = 12430
./strace-static-x86_64: Process 12430 attached
[pid 12430] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12430] setpgid(0, 0)               = 0
[pid 12430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12430] write(3, "1000", 4)         = 4
[pid 12430] close(3)                    = 0
[pid 12430] memfd_create("syzkaller", 0) = 3
[pid 12430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12430] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12430] munmap(0x7fd990e3c000, 32768) = 0
[pid 12430] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12430] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12430] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12430] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12430] close(4)                    = 0
[pid 12430] close(3)                    = 0
[pid 12430] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12430] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12430] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12430] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12430] open("./bus", O_RDONLY)     = 3
[pid 12430] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12430] exit_group(0)               = ?
[pid 12430] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12430, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12431
./strace-static-x86_64: Process 12431 attached
[pid 12431] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12431] setpgid(0, 0)               = 0
[pid 12431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12431] write(3, "1000", 4)         = 4
[pid 12431] close(3)                    = 0
[pid 12431] memfd_create("syzkaller", 0) = 3
[pid 12431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12431] munmap(0x7fd990e3c000, 32768) = 0
[pid 12431] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12431] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12431] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12431] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12431] close(4)                    = 0
[pid 12431] close(3)                    = 0
[pid 12431] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12431] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12431] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12431] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12431] open("./bus", O_RDONLY)     = 3
[pid 12431] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12431] exit_group(0)               = ?
[pid 12431] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12431, 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=0x55555567f5d0) = 12432
./strace-static-x86_64: Process 12432 attached
[pid 12432] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12432] setpgid(0, 0)               = 0
[pid 12432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12432] write(3, "1000", 4)         = 4
[pid 12432] close(3)                    = 0
[pid 12432] memfd_create("syzkaller", 0) = 3
[pid 12432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12432] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12432] munmap(0x7fd990e3c000, 32768) = 0
[pid 12432] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12432] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12432] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12432] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12432] close(4)                    = 0
[pid 12432] close(3)                    = 0
[pid 12432] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12432] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12432] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12432] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12432] open("./bus", O_RDONLY)     = 3
[pid 12432] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12432] exit_group(0)               = ?
[pid 12432] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12432, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12433
./strace-static-x86_64: Process 12433 attached
[pid 12433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12433] setpgid(0, 0)               = 0
[pid 12433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12433] write(3, "1000", 4)         = 4
[pid 12433] close(3)                    = 0
[pid 12433] memfd_create("syzkaller", 0) = 3
[pid 12433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12433] munmap(0x7fd990e3c000, 32768) = 0
[pid 12433] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12433] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12433] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12433] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12433] close(4)                    = 0
[pid 12433] close(3)                    = 0
[pid 12433] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12433] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12433] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12433] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12433] open("./bus", O_RDONLY)     = 3
[pid 12433] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12433] exit_group(0)               = ?
[pid 12433] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12433, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12434 attached
, child_tidptr=0x55555567f5d0) = 12434
[pid 12434] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12434] setpgid(0, 0)               = 0
[pid 12434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12434] write(3, "1000", 4)         = 4
[pid 12434] close(3)                    = 0
[pid 12434] memfd_create("syzkaller", 0) = 3
[pid 12434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12434] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12434] munmap(0x7fd990e3c000, 32768) = 0
[pid 12434] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12434] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12434] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12434] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12434] close(4)                    = 0
[pid 12434] close(3)                    = 0
[pid 12434] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12434] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12434] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12434] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12434] open("./bus", O_RDONLY)     = 3
[pid 12434] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12434] exit_group(0)               = ?
[pid 12434] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12434, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12435 attached
, child_tidptr=0x55555567f5d0) = 12435
[pid 12435] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12435] setpgid(0, 0)               = 0
[pid 12435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12435] write(3, "1000", 4)         = 4
[pid 12435] close(3)                    = 0
[pid 12435] memfd_create("syzkaller", 0) = 3
[pid 12435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12435] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12435] munmap(0x7fd990e3c000, 32768) = 0
[pid 12435] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12435] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12435] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12435] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12435] close(4)                    = 0
[pid 12435] close(3)                    = 0
[pid 12435] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12435] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12435] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12435] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12435] open("./bus", O_RDONLY)     = 3
[pid 12435] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12435] exit_group(0)               = ?
[pid 12435] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12435, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12436 attached
, child_tidptr=0x55555567f5d0) = 12436
[pid 12436] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12436] setpgid(0, 0)               = 0
[pid 12436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12436] write(3, "1000", 4)         = 4
[pid 12436] close(3)                    = 0
[pid 12436] memfd_create("syzkaller", 0) = 3
[pid 12436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12436] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12436] munmap(0x7fd990e3c000, 32768) = 0
[pid 12436] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12436] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12436] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12436] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12436] close(4)                    = 0
[pid 12436] close(3)                    = 0
[pid 12436] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12436] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12436] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12436] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12436] open("./bus", O_RDONLY)     = 3
[pid 12436] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12436] exit_group(0)               = ?
[pid 12436] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12436, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12437
./strace-static-x86_64: Process 12437 attached
[pid 12437] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12437] setpgid(0, 0)               = 0
[pid 12437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12437] write(3, "1000", 4)         = 4
[pid 12437] close(3)                    = 0
[pid 12437] memfd_create("syzkaller", 0) = 3
[pid 12437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12437] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12437] munmap(0x7fd990e3c000, 32768) = 0
[pid 12437] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12437] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12437] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12437] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12437] close(4)                    = 0
[pid 12437] close(3)                    = 0
[pid 12437] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12437] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12437] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12437] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12437] open("./bus", O_RDONLY)     = 3
[pid 12437] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12437] exit_group(0)               = ?
[pid 12437] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12437, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12438 attached
, child_tidptr=0x55555567f5d0) = 12438
[pid 12438] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12438] setpgid(0, 0)               = 0
[pid 12438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12438] write(3, "1000", 4)         = 4
[pid 12438] close(3)                    = 0
[pid 12438] memfd_create("syzkaller", 0) = 3
[pid 12438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12438] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12438] munmap(0x7fd990e3c000, 32768) = 0
[pid 12438] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12438] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12438] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12438] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12438] close(4)                    = 0
[pid 12438] close(3)                    = 0
[pid 12438] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12438] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12438] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12438] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12438] open("./bus", O_RDONLY)     = 3
[pid 12438] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12438] exit_group(0)               = ?
[pid 12438] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12438, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12439
./strace-static-x86_64: Process 12439 attached
[pid 12439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12439] setpgid(0, 0)               = 0
[pid 12439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12439] write(3, "1000", 4)         = 4
[pid 12439] close(3)                    = 0
[pid 12439] memfd_create("syzkaller", 0) = 3
[pid 12439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12439] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12439] munmap(0x7fd990e3c000, 32768) = 0
[pid 12439] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12439] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12439] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12439] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12439] close(4)                    = 0
[pid 12439] close(3)                    = 0
[pid 12439] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12439] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12439] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12439] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12439] open("./bus", O_RDONLY)     = 3
[pid 12439] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12439] exit_group(0)               = ?
[pid 12439] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12439, 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 12440 attached
, child_tidptr=0x55555567f5d0) = 12440
[pid 12440] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12440] setpgid(0, 0)               = 0
[pid 12440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12440] write(3, "1000", 4)         = 4
[pid 12440] close(3)                    = 0
[pid 12440] memfd_create("syzkaller", 0) = 3
[pid 12440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12440] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12440] munmap(0x7fd990e3c000, 32768) = 0
[pid 12440] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12440] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12440] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12440] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12440] close(4)                    = 0
[pid 12440] close(3)                    = 0
[pid 12440] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12440] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12440] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12440] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12440] open("./bus", O_RDONLY)     = 3
[pid 12440] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12440] exit_group(0)               = ?
[pid 12440] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12440, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12441 attached
, child_tidptr=0x55555567f5d0) = 12441
[pid 12441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12441] setpgid(0, 0)               = 0
[pid 12441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12441] write(3, "1000", 4)         = 4
[pid 12441] close(3)                    = 0
[pid 12441] memfd_create("syzkaller", 0) = 3
[pid 12441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12441] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12441] munmap(0x7fd990e3c000, 32768) = 0
[pid 12441] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12441] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12441] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12441] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12441] close(4)                    = 0
[pid 12441] close(3)                    = 0
[pid 12441] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12441] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12441] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12441] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12441] open("./bus", O_RDONLY)     = 3
[pid 12441] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12441] exit_group(0)               = ?
[pid 12441] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12441, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12442
./strace-static-x86_64: Process 12442 attached
[pid 12442] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12442] setpgid(0, 0)               = 0
[pid 12442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12442] write(3, "1000", 4)         = 4
[pid 12442] close(3)                    = 0
[pid 12442] memfd_create("syzkaller", 0) = 3
[pid 12442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12442] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12442] munmap(0x7fd990e3c000, 32768) = 0
[pid 12442] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12442] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12442] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12442] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12442] close(4)                    = 0
[pid 12442] close(3)                    = 0
[pid 12442] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12442] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12442] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12442] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12442] open("./bus", O_RDONLY)     = 3
[pid 12442] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12442] exit_group(0)               = ?
[pid 12442] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12442, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12443 attached
, child_tidptr=0x55555567f5d0) = 12443
[pid 12443] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12443] setpgid(0, 0)               = 0
[pid 12443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12443] write(3, "1000", 4)         = 4
[pid 12443] close(3)                    = 0
[pid 12443] memfd_create("syzkaller", 0) = 3
[pid 12443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12443] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12443] munmap(0x7fd990e3c000, 32768) = 0
[pid 12443] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12443] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12443] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12443] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12443] close(4)                    = 0
[pid 12443] close(3)                    = 0
[pid 12443] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12443] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12443] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12443] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12443] open("./bus", O_RDONLY)     = 3
[pid 12443] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12443] exit_group(0)               = ?
[pid 12443] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12443, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12444
./strace-static-x86_64: Process 12444 attached
[pid 12444] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12444] setpgid(0, 0)               = 0
[pid 12444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12444] write(3, "1000", 4)         = 4
[pid 12444] close(3)                    = 0
[pid 12444] memfd_create("syzkaller", 0) = 3
[pid 12444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12444] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12444] munmap(0x7fd990e3c000, 32768) = 0
[pid 12444] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12444] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12444] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12444] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12444] close(4)                    = 0
[pid 12444] close(3)                    = 0
[pid 12444] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12444] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12444] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12444] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12444] open("./bus", O_RDONLY)     = 3
[pid 12444] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12444] exit_group(0)               = ?
[pid 12444] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12444, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12445
./strace-static-x86_64: Process 12445 attached
[pid 12445] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12445] setpgid(0, 0)               = 0
[pid 12445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12445] write(3, "1000", 4)         = 4
[pid 12445] close(3)                    = 0
[pid 12445] memfd_create("syzkaller", 0) = 3
[pid 12445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12445] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12445] munmap(0x7fd990e3c000, 32768) = 0
[pid 12445] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12445] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12445] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12445] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12445] close(4)                    = 0
[pid 12445] close(3)                    = 0
[pid 12445] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12445] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12445] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12445] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12445] open("./bus", O_RDONLY)     = 3
[pid 12445] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12445] exit_group(0)               = ?
[pid 12445] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12445, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12446 attached
, child_tidptr=0x55555567f5d0) = 12446
[pid 12446] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12446] setpgid(0, 0)               = 0
[pid 12446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12446] write(3, "1000", 4)         = 4
[pid 12446] close(3)                    = 0
[pid 12446] memfd_create("syzkaller", 0) = 3
[pid 12446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12446] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12446] munmap(0x7fd990e3c000, 32768) = 0
[pid 12446] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12446] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12446] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12446] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12446] close(4)                    = 0
[pid 12446] close(3)                    = 0
[pid 12446] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12446] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12446] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12446] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12446] open("./bus", O_RDONLY)     = 3
[pid 12446] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12446] exit_group(0)               = ?
[pid 12446] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12446, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12447
./strace-static-x86_64: Process 12447 attached
[pid 12447] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12447] setpgid(0, 0)               = 0
[pid 12447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12447] write(3, "1000", 4)         = 4
[pid 12447] close(3)                    = 0
[pid 12447] memfd_create("syzkaller", 0) = 3
[pid 12447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12447] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12447] munmap(0x7fd990e3c000, 32768) = 0
[pid 12447] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12447] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12447] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12447] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12447] close(4)                    = 0
[pid 12447] close(3)                    = 0
[pid 12447] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12447] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12447] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12447] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12447] open("./bus", O_RDONLY)     = 3
[pid 12447] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12447] exit_group(0)               = ?
[pid 12447] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12447, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12448
./strace-static-x86_64: Process 12448 attached
[pid 12448] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12448] setpgid(0, 0)               = 0
[pid 12448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12448] write(3, "1000", 4)         = 4
[pid 12448] close(3)                    = 0
[pid 12448] memfd_create("syzkaller", 0) = 3
[pid 12448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12448] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12448] munmap(0x7fd990e3c000, 32768) = 0
[pid 12448] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12448] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12448] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12448] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12448] close(4)                    = 0
[pid 12448] close(3)                    = 0
[pid 12448] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12448] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12448] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12448] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12448] open("./bus", O_RDONLY)     = 3
[pid 12448] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12448] exit_group(0)               = ?
[pid 12448] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12448, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12449
./strace-static-x86_64: Process 12449 attached
[pid 12449] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12449] setpgid(0, 0)               = 0
[pid 12449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12449] write(3, "1000", 4)         = 4
[pid 12449] close(3)                    = 0
[pid 12449] memfd_create("syzkaller", 0) = 3
[pid 12449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12449] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12449] munmap(0x7fd990e3c000, 32768) = 0
[pid 12449] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12449] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12449] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12449] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12449] close(4)                    = 0
[pid 12449] close(3)                    = 0
[pid 12449] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12449] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12449] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12449] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12449] open("./bus", O_RDONLY)     = 3
[pid 12449] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12449] exit_group(0)               = ?
[pid 12449] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12449, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12450
./strace-static-x86_64: Process 12450 attached
[pid 12450] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12450] setpgid(0, 0)               = 0
[pid 12450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12450] write(3, "1000", 4)         = 4
[pid 12450] close(3)                    = 0
[pid 12450] memfd_create("syzkaller", 0) = 3
[pid 12450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12450] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12450] munmap(0x7fd990e3c000, 32768) = 0
[pid 12450] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12450] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12450] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12450] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12450] close(4)                    = 0
[pid 12450] close(3)                    = 0
[pid 12450] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12450] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12450] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12450] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12450] open("./bus", O_RDONLY)     = 3
[pid 12450] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12450] exit_group(0)               = ?
[pid 12450] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12450, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12451
./strace-static-x86_64: Process 12451 attached
[pid 12451] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12451] setpgid(0, 0)               = 0
[pid 12451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12451] write(3, "1000", 4)         = 4
[pid 12451] close(3)                    = 0
[pid 12451] memfd_create("syzkaller", 0) = 3
[pid 12451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12451] munmap(0x7fd990e3c000, 32768) = 0
[pid 12451] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12451] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12451] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12451] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12451] close(4)                    = 0
[pid 12451] close(3)                    = 0
[pid 12451] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12451] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12451] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12451] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12451] open("./bus", O_RDONLY)     = 3
[pid 12451] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12451] exit_group(0)               = ?
[pid 12451] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12451, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12452 attached
, child_tidptr=0x55555567f5d0) = 12452
[pid 12452] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12452] setpgid(0, 0)               = 0
[pid 12452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12452] write(3, "1000", 4)         = 4
[pid 12452] close(3)                    = 0
[pid 12452] memfd_create("syzkaller", 0) = 3
[pid 12452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12452] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12452] munmap(0x7fd990e3c000, 32768) = 0
[pid 12452] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12452] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12452] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12452] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12452] close(4)                    = 0
[pid 12452] close(3)                    = 0
[pid 12452] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12452] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12452] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12452] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12452] open("./bus", O_RDONLY)     = 3
[pid 12452] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12452] exit_group(0)               = ?
[pid 12452] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12452, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12453
./strace-static-x86_64: Process 12453 attached
[pid 12453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12453] setpgid(0, 0)               = 0
[pid 12453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12453] write(3, "1000", 4)         = 4
[pid 12453] close(3)                    = 0
[pid 12453] memfd_create("syzkaller", 0) = 3
[pid 12453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12453] munmap(0x7fd990e3c000, 32768) = 0
[pid 12453] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12453] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12453] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12453] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12453] close(4)                    = 0
[pid 12453] close(3)                    = 0
[pid 12453] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12453] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12453] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12453] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12453] open("./bus", O_RDONLY)     = 3
[pid 12453] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12453] exit_group(0)               = ?
[pid 12453] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12453, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12454
./strace-static-x86_64: Process 12454 attached
[pid 12454] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12454] setpgid(0, 0)               = 0
[pid 12454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12454] write(3, "1000", 4)         = 4
[pid 12454] close(3)                    = 0
[pid 12454] memfd_create("syzkaller", 0) = 3
[pid 12454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12454] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12454] munmap(0x7fd990e3c000, 32768) = 0
[pid 12454] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12454] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12454] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12454] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12454] close(4)                    = 0
[pid 12454] close(3)                    = 0
[pid 12454] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12454] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12454] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12454] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12454] open("./bus", O_RDONLY)     = 3
[pid 12454] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12454] exit_group(0)               = ?
[pid 12454] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12454, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12455 attached
, child_tidptr=0x55555567f5d0) = 12455
[pid 12455] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12455] setpgid(0, 0)               = 0
[pid 12455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12455] write(3, "1000", 4)         = 4
[pid 12455] close(3)                    = 0
[pid 12455] memfd_create("syzkaller", 0) = 3
[pid 12455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12455] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12455] munmap(0x7fd990e3c000, 32768) = 0
[pid 12455] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12455] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12455] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12455] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12455] close(4)                    = 0
[pid 12455] close(3)                    = 0
[pid 12455] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12455] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12455] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12455] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12455] open("./bus", O_RDONLY)     = 3
[pid 12455] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12455] exit_group(0)               = ?
[pid 12455] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12455, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12456 attached
, child_tidptr=0x55555567f5d0) = 12456
[pid 12456] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12456] setpgid(0, 0)               = 0
[pid 12456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12456] write(3, "1000", 4)         = 4
[pid 12456] close(3)                    = 0
[pid 12456] memfd_create("syzkaller", 0) = 3
[pid 12456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12456] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12456] munmap(0x7fd990e3c000, 32768) = 0
[pid 12456] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12456] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12456] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12456] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12456] close(4)                    = 0
[pid 12456] close(3)                    = 0
[pid 12456] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12456] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12456] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12456] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12456] open("./bus", O_RDONLY)     = 3
[pid 12456] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12456] exit_group(0)               = ?
[pid 12456] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12456, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12457 attached
, child_tidptr=0x55555567f5d0) = 12457
[pid 12457] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12457] setpgid(0, 0)               = 0
[pid 12457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12457] write(3, "1000", 4)         = 4
[pid 12457] close(3)                    = 0
[pid 12457] memfd_create("syzkaller", 0) = 3
[pid 12457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12457] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12457] munmap(0x7fd990e3c000, 32768) = 0
[pid 12457] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12457] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12457] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12457] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12457] close(4)                    = 0
[pid 12457] close(3)                    = 0
[pid 12457] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12457] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12457] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12457] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12457] open("./bus", O_RDONLY)     = 3
[pid 12457] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12457] exit_group(0)               = ?
[pid 12457] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12457, 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=0x55555567f5d0) = 12458
./strace-static-x86_64: Process 12458 attached
[pid 12458] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12458] setpgid(0, 0)               = 0
[pid 12458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12458] write(3, "1000", 4)         = 4
[pid 12458] close(3)                    = 0
[pid 12458] memfd_create("syzkaller", 0) = 3
[pid 12458] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12458] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12458] munmap(0x7fd990e3c000, 32768) = 0
[pid 12458] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12458] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12458] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12458] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12458] close(4)                    = 0
[pid 12458] close(3)                    = 0
[pid 12458] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12458] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12458] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12458] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12458] open("./bus", O_RDONLY)     = 3
[pid 12458] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12458] exit_group(0)               = ?
[pid 12458] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12458, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12459
./strace-static-x86_64: Process 12459 attached
[pid 12459] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12459] setpgid(0, 0)               = 0
[pid 12459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12459] write(3, "1000", 4)         = 4
[pid 12459] close(3)                    = 0
[pid 12459] memfd_create("syzkaller", 0) = 3
[pid 12459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12459] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12459] munmap(0x7fd990e3c000, 32768) = 0
[pid 12459] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12459] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12459] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12459] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12459] close(4)                    = 0
[pid 12459] close(3)                    = 0
[pid 12459] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12459] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12459] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12459] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12459] open("./bus", O_RDONLY)     = 3
[pid 12459] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12459] exit_group(0)               = ?
[pid 12459] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12459, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12460
./strace-static-x86_64: Process 12460 attached
[pid 12460] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12460] setpgid(0, 0)               = 0
[pid 12460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12460] write(3, "1000", 4)         = 4
[pid 12460] close(3)                    = 0
[pid 12460] memfd_create("syzkaller", 0) = 3
[pid 12460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12460] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12460] munmap(0x7fd990e3c000, 32768) = 0
[pid 12460] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12460] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12460] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12460] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12460] close(4)                    = 0
[pid 12460] close(3)                    = 0
[pid 12460] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12460] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12460] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12460] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12460] open("./bus", O_RDONLY)     = 3
[pid 12460] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12460] exit_group(0)               = ?
[pid 12460] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12460, 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 12461 attached
, child_tidptr=0x55555567f5d0) = 12461
[pid 12461] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12461] setpgid(0, 0)               = 0
[pid 12461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12461] write(3, "1000", 4)         = 4
[pid 12461] close(3)                    = 0
[pid 12461] memfd_create("syzkaller", 0) = 3
[pid 12461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12461] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12461] munmap(0x7fd990e3c000, 32768) = 0
[pid 12461] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12461] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12461] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12461] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12461] close(4)                    = 0
[pid 12461] close(3)                    = 0
[pid 12461] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12461] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12461] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12461] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12461] open("./bus", O_RDONLY)     = 3
[pid 12461] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12461] exit_group(0)               = ?
[pid 12461] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12461, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12462
./strace-static-x86_64: Process 12462 attached
[pid 12462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12462] setpgid(0, 0)               = 0
[pid 12462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12462] write(3, "1000", 4)         = 4
[pid 12462] close(3)                    = 0
[pid 12462] memfd_create("syzkaller", 0) = 3
[pid 12462] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12462] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12462] munmap(0x7fd990e3c000, 32768) = 0
[pid 12462] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12462] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12462] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12462] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12462] close(4)                    = 0
[pid 12462] close(3)                    = 0
[pid 12462] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12462] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12462] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12462] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12462] open("./bus", O_RDONLY)     = 3
[pid 12462] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12462] exit_group(0)               = ?
[pid 12462] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12462, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12463 attached
, child_tidptr=0x55555567f5d0) = 12463
[pid 12463] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12463] setpgid(0, 0)               = 0
[pid 12463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12463] write(3, "1000", 4)         = 4
[pid 12463] close(3)                    = 0
[pid 12463] memfd_create("syzkaller", 0) = 3
[pid 12463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12463] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12463] munmap(0x7fd990e3c000, 32768) = 0
[pid 12463] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12463] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12463] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12463] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12463] close(4)                    = 0
[pid 12463] close(3)                    = 0
[pid 12463] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12463] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12463] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12463] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12463] open("./bus", O_RDONLY)     = 3
[pid 12463] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12463] exit_group(0)               = ?
[pid 12463] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12463, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12464
./strace-static-x86_64: Process 12464 attached
[pid 12464] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12464] setpgid(0, 0)               = 0
[pid 12464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12464] write(3, "1000", 4)         = 4
[pid 12464] close(3)                    = 0
[pid 12464] memfd_create("syzkaller", 0) = 3
[pid 12464] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12464] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12464] munmap(0x7fd990e3c000, 32768) = 0
[pid 12464] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12464] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12464] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12464] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12464] close(4)                    = 0
[pid 12464] close(3)                    = 0
[pid 12464] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12464] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12464] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12464] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12464] open("./bus", O_RDONLY)     = 3
[pid 12464] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12464] exit_group(0)               = ?
[pid 12464] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12464, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12465
./strace-static-x86_64: Process 12465 attached
[pid 12465] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12465] setpgid(0, 0)               = 0
[pid 12465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12465] write(3, "1000", 4)         = 4
[pid 12465] close(3)                    = 0
[pid 12465] memfd_create("syzkaller", 0) = 3
[pid 12465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12465] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12465] munmap(0x7fd990e3c000, 32768) = 0
[pid 12465] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12465] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12465] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12465] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12465] close(4)                    = 0
[pid 12465] close(3)                    = 0
[pid 12465] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12465] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12465] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12465] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12465] open("./bus", O_RDONLY)     = 3
[pid 12465] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12465] exit_group(0)               = ?
[pid 12465] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12465, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12466 attached
, child_tidptr=0x55555567f5d0) = 12466
[pid 12466] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12466] setpgid(0, 0)               = 0
[pid 12466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12466] write(3, "1000", 4)         = 4
[pid 12466] close(3)                    = 0
[pid 12466] memfd_create("syzkaller", 0) = 3
[pid 12466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12466] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12466] munmap(0x7fd990e3c000, 32768) = 0
[pid 12466] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12466] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12466] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12466] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12466] close(4)                    = 0
[pid 12466] close(3)                    = 0
[pid 12466] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12466] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12466] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12466] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12466] open("./bus", O_RDONLY)     = 3
[pid 12466] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12466] exit_group(0)               = ?
[pid 12466] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12466, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12467 attached
, child_tidptr=0x55555567f5d0) = 12467
[pid 12467] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12467] setpgid(0, 0)               = 0
[pid 12467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12467] write(3, "1000", 4)         = 4
[pid 12467] close(3)                    = 0
[pid 12467] memfd_create("syzkaller", 0) = 3
[pid 12467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12467] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12467] munmap(0x7fd990e3c000, 32768) = 0
[pid 12467] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12467] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12467] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12467] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12467] close(4)                    = 0
[pid 12467] close(3)                    = 0
[pid 12467] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12467] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12467] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12467] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12467] open("./bus", O_RDONLY)     = 3
[pid 12467] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12467] exit_group(0)               = ?
[pid 12467] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12467, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12468 attached
, child_tidptr=0x55555567f5d0) = 12468
[pid 12468] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12468] setpgid(0, 0)               = 0
[pid 12468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12468] write(3, "1000", 4)         = 4
[pid 12468] close(3)                    = 0
[pid 12468] memfd_create("syzkaller", 0) = 3
[pid 12468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12468] munmap(0x7fd990e3c000, 32768) = 0
[pid 12468] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12468] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12468] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12468] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12468] close(4)                    = 0
[pid 12468] close(3)                    = 0
[pid 12468] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12468] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12468] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12468] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12468] open("./bus", O_RDONLY)     = 3
[pid 12468] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12468] exit_group(0)               = ?
[pid 12468] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12468, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12469
./strace-static-x86_64: Process 12469 attached
[pid 12469] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12469] setpgid(0, 0)               = 0
[pid 12469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12469] write(3, "1000", 4)         = 4
[pid 12469] close(3)                    = 0
[pid 12469] memfd_create("syzkaller", 0) = 3
[pid 12469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12469] munmap(0x7fd990e3c000, 32768) = 0
[pid 12469] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12469] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12469] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12469] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12469] close(4)                    = 0
[pid 12469] close(3)                    = 0
[pid 12469] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12469] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12469] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12469] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12469] open("./bus", O_RDONLY)     = 3
[pid 12469] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12469] exit_group(0)               = ?
[pid 12469] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12469, 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=0x55555567f5d0) = 12470
./strace-static-x86_64: Process 12470 attached
[pid 12470] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12470] setpgid(0, 0)               = 0
[pid 12470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12470] write(3, "1000", 4)         = 4
[pid 12470] close(3)                    = 0
[pid 12470] memfd_create("syzkaller", 0) = 3
[pid 12470] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12470] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12470] munmap(0x7fd990e3c000, 32768) = 0
[pid 12470] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12470] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12470] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12470] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12470] close(4)                    = 0
[pid 12470] close(3)                    = 0
[pid 12470] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12470] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12470] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12470] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12470] open("./bus", O_RDONLY)     = 3
[pid 12470] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12470] exit_group(0)               = ?
[pid 12470] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12470, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12471
./strace-static-x86_64: Process 12471 attached
[pid 12471] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12471] setpgid(0, 0)               = 0
[pid 12471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12471] write(3, "1000", 4)         = 4
[pid 12471] close(3)                    = 0
[pid 12471] memfd_create("syzkaller", 0) = 3
[pid 12471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12471] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12471] munmap(0x7fd990e3c000, 32768) = 0
[pid 12471] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12471] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12471] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12471] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12471] close(4)                    = 0
[pid 12471] close(3)                    = 0
[pid 12471] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12471] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12471] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12471] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12471] open("./bus", O_RDONLY)     = 3
[pid 12471] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12471] exit_group(0)               = ?
[pid 12471] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12471, 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 12472 attached
, child_tidptr=0x55555567f5d0) = 12472
[pid 12472] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12472] setpgid(0, 0)               = 0
[pid 12472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12472] write(3, "1000", 4)         = 4
[pid 12472] close(3)                    = 0
[pid 12472] memfd_create("syzkaller", 0) = 3
[pid 12472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12472] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12472] munmap(0x7fd990e3c000, 32768) = 0
[pid 12472] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12472] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12472] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12472] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12472] close(4)                    = 0
[pid 12472] close(3)                    = 0
[pid 12472] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12472] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12472] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12472] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12472] open("./bus", O_RDONLY)     = 3
[pid 12472] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12472] exit_group(0)               = ?
[pid 12472] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12472, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12473
./strace-static-x86_64: Process 12473 attached
[pid 12473] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12473] setpgid(0, 0)               = 0
[pid 12473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12473] write(3, "1000", 4)         = 4
[pid 12473] close(3)                    = 0
[pid 12473] memfd_create("syzkaller", 0) = 3
[pid 12473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12473] munmap(0x7fd990e3c000, 32768) = 0
[pid 12473] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12473] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12473] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12473] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12473] close(4)                    = 0
[pid 12473] close(3)                    = 0
[pid 12473] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12473] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12473] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12473] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12473] open("./bus", O_RDONLY)     = 3
[pid 12473] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12473] exit_group(0)               = ?
[pid 12473] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12473, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12474 attached
, child_tidptr=0x55555567f5d0) = 12474
[pid 12474] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12474] setpgid(0, 0)               = 0
[pid 12474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12474] write(3, "1000", 4)         = 4
[pid 12474] close(3)                    = 0
[pid 12474] memfd_create("syzkaller", 0) = 3
[pid 12474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12474] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12474] munmap(0x7fd990e3c000, 32768) = 0
[pid 12474] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12474] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12474] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12474] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12474] close(4)                    = 0
[pid 12474] close(3)                    = 0
[pid 12474] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12474] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12474] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12474] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12474] open("./bus", O_RDONLY)     = 3
[pid 12474] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12474] exit_group(0)               = ?
[pid 12474] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12474, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12475 attached
, child_tidptr=0x55555567f5d0) = 12475
[pid 12475] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12475] setpgid(0, 0)               = 0
[pid 12475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12475] write(3, "1000", 4)         = 4
[pid 12475] close(3)                    = 0
[pid 12475] memfd_create("syzkaller", 0) = 3
[pid 12475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12475] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12475] munmap(0x7fd990e3c000, 32768) = 0
[pid 12475] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12475] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12475] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12475] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12475] close(4)                    = 0
[pid 12475] close(3)                    = 0
[pid 12475] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12475] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12475] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12475] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12475] open("./bus", O_RDONLY)     = 3
[pid 12475] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12475] exit_group(0)               = ?
[pid 12475] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12475, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12476
./strace-static-x86_64: Process 12476 attached
[pid 12476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12476] setpgid(0, 0)               = 0
[pid 12476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12476] write(3, "1000", 4)         = 4
[pid 12476] close(3)                    = 0
[pid 12476] memfd_create("syzkaller", 0) = 3
[pid 12476] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12476] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12476] munmap(0x7fd990e3c000, 32768) = 0
[pid 12476] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12476] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12476] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12476] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12476] close(4)                    = 0
[pid 12476] close(3)                    = 0
[pid 12476] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12476] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12476] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12476] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12476] open("./bus", O_RDONLY)     = 3
[pid 12476] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12476] exit_group(0)               = ?
[pid 12476] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12476, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12477 attached
, child_tidptr=0x55555567f5d0) = 12477
[pid 12477] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12477] setpgid(0, 0)               = 0
[pid 12477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12477] write(3, "1000", 4)         = 4
[pid 12477] close(3)                    = 0
[pid 12477] memfd_create("syzkaller", 0) = 3
[pid 12477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12477] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12477] munmap(0x7fd990e3c000, 32768) = 0
[pid 12477] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12477] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12477] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12477] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12477] close(4)                    = 0
[pid 12477] close(3)                    = 0
[pid 12477] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12477] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12477] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12477] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12477] open("./bus", O_RDONLY)     = 3
[pid 12477] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12477] exit_group(0)               = ?
[pid 12477] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12477, 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 12478 attached
, child_tidptr=0x55555567f5d0) = 12478
[pid 12478] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12478] setpgid(0, 0)               = 0
[pid 12478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12478] write(3, "1000", 4)         = 4
[pid 12478] close(3)                    = 0
[pid 12478] memfd_create("syzkaller", 0) = 3
[pid 12478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12478] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12478] munmap(0x7fd990e3c000, 32768) = 0
[pid 12478] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12478] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12478] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12478] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12478] close(4)                    = 0
[pid 12478] close(3)                    = 0
[pid 12478] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12478] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12478] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12478] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12478] open("./bus", O_RDONLY)     = 3
[pid 12478] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12478] exit_group(0)               = ?
[pid 12478] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12478, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12479
./strace-static-x86_64: Process 12479 attached
[pid 12479] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12479] setpgid(0, 0)               = 0
[pid 12479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12479] write(3, "1000", 4)         = 4
[pid 12479] close(3)                    = 0
[pid 12479] memfd_create("syzkaller", 0) = 3
[pid 12479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12479] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12479] munmap(0x7fd990e3c000, 32768) = 0
[pid 12479] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12479] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12479] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12479] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12479] close(4)                    = 0
[pid 12479] close(3)                    = 0
[pid 12479] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12479] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12479] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12479] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12479] open("./bus", O_RDONLY)     = 3
[pid 12479] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12479] exit_group(0)               = ?
[pid 12479] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12479, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12480 attached
, child_tidptr=0x55555567f5d0) = 12480
[pid 12480] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12480] setpgid(0, 0)               = 0
[pid 12480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12480] write(3, "1000", 4)         = 4
[pid 12480] close(3)                    = 0
[pid 12480] memfd_create("syzkaller", 0) = 3
[pid 12480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12480] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12480] munmap(0x7fd990e3c000, 32768) = 0
[pid 12480] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12480] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12480] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12480] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12480] close(4)                    = 0
[pid 12480] close(3)                    = 0
[pid 12480] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12480] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12480] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12480] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12480] open("./bus", O_RDONLY)     = 3
[pid 12480] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12480] exit_group(0)               = ?
[pid 12480] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12480, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12481 attached
, child_tidptr=0x55555567f5d0) = 12481
[pid 12481] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12481] setpgid(0, 0)               = 0
[pid 12481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12481] write(3, "1000", 4)         = 4
[pid 12481] close(3)                    = 0
[pid 12481] memfd_create("syzkaller", 0) = 3
[pid 12481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12481] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12481] munmap(0x7fd990e3c000, 32768) = 0
[pid 12481] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12481] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12481] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12481] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12481] close(4)                    = 0
[pid 12481] close(3)                    = 0
[pid 12481] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12481] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12481] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12481] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12481] open("./bus", O_RDONLY)     = 3
[pid 12481] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12481] exit_group(0)               = ?
[pid 12481] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12481, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12482
./strace-static-x86_64: Process 12482 attached
[pid 12482] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12482] setpgid(0, 0)               = 0
[pid 12482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12482] write(3, "1000", 4)         = 4
[pid 12482] close(3)                    = 0
[pid 12482] memfd_create("syzkaller", 0) = 3
[pid 12482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12482] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12482] munmap(0x7fd990e3c000, 32768) = 0
[pid 12482] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12482] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12482] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12482] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12482] close(4)                    = 0
[pid 12482] close(3)                    = 0
[pid 12482] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12482] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12482] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12482] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12482] open("./bus", O_RDONLY)     = 3
[pid 12482] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12482] exit_group(0)               = ?
[pid 12482] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12482, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12483
./strace-static-x86_64: Process 12483 attached
[pid 12483] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12483] setpgid(0, 0)               = 0
[pid 12483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12483] write(3, "1000", 4)         = 4
[pid 12483] close(3)                    = 0
[pid 12483] memfd_create("syzkaller", 0) = 3
[pid 12483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12483] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12483] munmap(0x7fd990e3c000, 32768) = 0
[pid 12483] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12483] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12483] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12483] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12483] close(4)                    = 0
[pid 12483] close(3)                    = 0
[pid 12483] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12483] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12483] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12483] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12483] open("./bus", O_RDONLY)     = 3
[pid 12483] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12483] exit_group(0)               = ?
[pid 12483] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12483, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12484
./strace-static-x86_64: Process 12484 attached
[pid 12484] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12484] setpgid(0, 0)               = 0
[pid 12484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12484] write(3, "1000", 4)         = 4
[pid 12484] close(3)                    = 0
[pid 12484] memfd_create("syzkaller", 0) = 3
[pid 12484] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12484] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12484] munmap(0x7fd990e3c000, 32768) = 0
[pid 12484] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12484] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12484] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12484] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12484] close(4)                    = 0
[pid 12484] close(3)                    = 0
[pid 12484] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12484] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12484] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12484] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12484] open("./bus", O_RDONLY)     = 3
[pid 12484] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12484] exit_group(0)               = ?
[pid 12484] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12484, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12485
./strace-static-x86_64: Process 12485 attached
[pid 12485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12485] setpgid(0, 0)               = 0
[pid 12485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12485] write(3, "1000", 4)         = 4
[pid 12485] close(3)                    = 0
[pid 12485] memfd_create("syzkaller", 0) = 3
[pid 12485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12485] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12485] munmap(0x7fd990e3c000, 32768) = 0
[pid 12485] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12485] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12485] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12485] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12485] close(4)                    = 0
[pid 12485] close(3)                    = 0
[pid 12485] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12485] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12485] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12485] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12485] open("./bus", O_RDONLY)     = 3
[pid 12485] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12485] exit_group(0)               = ?
[pid 12485] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12485, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12486
./strace-static-x86_64: Process 12486 attached
[pid 12486] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12486] setpgid(0, 0)               = 0
[pid 12486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12486] write(3, "1000", 4)         = 4
[pid 12486] close(3)                    = 0
[pid 12486] memfd_create("syzkaller", 0) = 3
[pid 12486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12486] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12486] munmap(0x7fd990e3c000, 32768) = 0
[pid 12486] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12486] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12486] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12486] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12486] close(4)                    = 0
[pid 12486] close(3)                    = 0
[pid 12486] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12486] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12486] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12486] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12486] open("./bus", O_RDONLY)     = 3
[pid 12486] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12486] exit_group(0)               = ?
[pid 12486] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12486, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12487
./strace-static-x86_64: Process 12487 attached
[pid 12487] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12487] setpgid(0, 0)               = 0
[pid 12487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12487] write(3, "1000", 4)         = 4
[pid 12487] close(3)                    = 0
[pid 12487] memfd_create("syzkaller", 0) = 3
[pid 12487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12487] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12487] munmap(0x7fd990e3c000, 32768) = 0
[pid 12487] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12487] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12487] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12487] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12487] close(4)                    = 0
[pid 12487] close(3)                    = 0
[pid 12487] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12487] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12487] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12487] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12487] open("./bus", O_RDONLY)     = 3
[pid 12487] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12487] exit_group(0)               = ?
[pid 12487] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12487, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12488
./strace-static-x86_64: Process 12488 attached
[pid 12488] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12488] setpgid(0, 0)               = 0
[pid 12488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12488] write(3, "1000", 4)         = 4
[pid 12488] close(3)                    = 0
[pid 12488] memfd_create("syzkaller", 0) = 3
[pid 12488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12488] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12488] munmap(0x7fd990e3c000, 32768) = 0
[pid 12488] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12488] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12488] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12488] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12488] close(4)                    = 0
[pid 12488] close(3)                    = 0
[pid 12488] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12488] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12488] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12488] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12488] open("./bus", O_RDONLY)     = 3
[pid 12488] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12488] exit_group(0)               = ?
[pid 12488] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12488, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12489
./strace-static-x86_64: Process 12489 attached
[pid 12489] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12489] setpgid(0, 0)               = 0
[pid 12489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12489] write(3, "1000", 4)         = 4
[pid 12489] close(3)                    = 0
[pid 12489] memfd_create("syzkaller", 0) = 3
[pid 12489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12489] munmap(0x7fd990e3c000, 32768) = 0
[pid 12489] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12489] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12489] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12489] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12489] close(4)                    = 0
[pid 12489] close(3)                    = 0
[pid 12489] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12489] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12489] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12489] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12489] open("./bus", O_RDONLY)     = 3
[pid 12489] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12489] exit_group(0)               = ?
[pid 12489] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12489, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12490
./strace-static-x86_64: Process 12490 attached
[pid 12490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12490] setpgid(0, 0)               = 0
[pid 12490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12490] write(3, "1000", 4)         = 4
[pid 12490] close(3)                    = 0
[pid 12490] memfd_create("syzkaller", 0) = 3
[pid 12490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12490] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12490] munmap(0x7fd990e3c000, 32768) = 0
[pid 12490] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12490] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12490] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12490] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12490] close(4)                    = 0
[pid 12490] close(3)                    = 0
[pid 12490] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12490] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12490] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12490] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12490] open("./bus", O_RDONLY)     = 3
[pid 12490] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12490] exit_group(0)               = ?
[pid 12490] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12490, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12491 attached
, child_tidptr=0x55555567f5d0) = 12491
[pid 12491] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12491] setpgid(0, 0)               = 0
[pid 12491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12491] write(3, "1000", 4)         = 4
[pid 12491] close(3)                    = 0
[pid 12491] memfd_create("syzkaller", 0) = 3
[pid 12491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12491] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12491] munmap(0x7fd990e3c000, 32768) = 0
[pid 12491] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12491] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12491] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12491] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12491] close(4)                    = 0
[pid 12491] close(3)                    = 0
[pid 12491] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12491] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12491] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12491] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12491] open("./bus", O_RDONLY)     = 3
[pid 12491] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12491] exit_group(0)               = ?
[pid 12491] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12491, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12492
./strace-static-x86_64: Process 12492 attached
[pid 12492] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12492] setpgid(0, 0)               = 0
[pid 12492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12492] write(3, "1000", 4)         = 4
[pid 12492] close(3)                    = 0
[pid 12492] memfd_create("syzkaller", 0) = 3
[pid 12492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12492] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12492] munmap(0x7fd990e3c000, 32768) = 0
[pid 12492] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12492] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12492] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12492] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12492] close(4)                    = 0
[pid 12492] close(3)                    = 0
[pid 12492] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12492] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12492] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12492] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12492] open("./bus", O_RDONLY)     = 3
[pid 12492] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12492] exit_group(0)               = ?
[pid 12492] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12492, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12493 attached
, child_tidptr=0x55555567f5d0) = 12493
[pid 12493] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12493] setpgid(0, 0)               = 0
[pid 12493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12493] write(3, "1000", 4)         = 4
[pid 12493] close(3)                    = 0
[pid 12493] memfd_create("syzkaller", 0) = 3
[pid 12493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12493] munmap(0x7fd990e3c000, 32768) = 0
[pid 12493] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12493] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12493] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12493] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12493] close(4)                    = 0
[pid 12493] close(3)                    = 0
[pid 12493] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12493] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12493] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12493] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12493] open("./bus", O_RDONLY)     = 3
[pid 12493] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12493] exit_group(0)               = ?
[pid 12493] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12493, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12494 attached
, child_tidptr=0x55555567f5d0) = 12494
[pid 12494] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12494] setpgid(0, 0)               = 0
[pid 12494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12494] write(3, "1000", 4)         = 4
[pid 12494] close(3)                    = 0
[pid 12494] memfd_create("syzkaller", 0) = 3
[pid 12494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12494] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12494] munmap(0x7fd990e3c000, 32768) = 0
[pid 12494] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12494] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12494] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12494] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12494] close(4)                    = 0
[pid 12494] close(3)                    = 0
[pid 12494] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12494] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12494] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12494] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12494] open("./bus", O_RDONLY)     = 3
[pid 12494] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12494] exit_group(0)               = ?
[pid 12494] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12494, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12495
./strace-static-x86_64: Process 12495 attached
[pid 12495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12495] setpgid(0, 0)               = 0
[pid 12495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12495] write(3, "1000", 4)         = 4
[pid 12495] close(3)                    = 0
[pid 12495] memfd_create("syzkaller", 0) = 3
[pid 12495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12495] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12495] munmap(0x7fd990e3c000, 32768) = 0
[pid 12495] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12495] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12495] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12495] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12495] close(4)                    = 0
[pid 12495] close(3)                    = 0
[pid 12495] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12495] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12495] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12495] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12495] open("./bus", O_RDONLY)     = 3
[pid 12495] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12495] exit_group(0)               = ?
[pid 12495] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12495, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12496
./strace-static-x86_64: Process 12496 attached
[pid 12496] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12496] setpgid(0, 0)               = 0
[pid 12496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12496] write(3, "1000", 4)         = 4
[pid 12496] close(3)                    = 0
[pid 12496] memfd_create("syzkaller", 0) = 3
[pid 12496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12496] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12496] munmap(0x7fd990e3c000, 32768) = 0
[pid 12496] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12496] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12496] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12496] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12496] close(4)                    = 0
[pid 12496] close(3)                    = 0
[pid 12496] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12496] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12496] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12496] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12496] open("./bus", O_RDONLY)     = 3
[pid 12496] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12496] exit_group(0)               = ?
[pid 12496] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12496, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12497
./strace-static-x86_64: Process 12497 attached
[pid 12497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12497] setpgid(0, 0)               = 0
[pid 12497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12497] write(3, "1000", 4)         = 4
[pid 12497] close(3)                    = 0
[pid 12497] memfd_create("syzkaller", 0) = 3
[pid 12497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12497] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12497] munmap(0x7fd990e3c000, 32768) = 0
[pid 12497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12497] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12497] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12497] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12497] close(4)                    = 0
[pid 12497] close(3)                    = 0
[pid 12497] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12497] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12497] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12497] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12497] open("./bus", O_RDONLY)     = 3
[pid 12497] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12497] exit_group(0)               = ?
[pid 12497] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12497, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12498 attached
, child_tidptr=0x55555567f5d0) = 12498
[pid 12498] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12498] setpgid(0, 0)               = 0
[pid 12498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12498] write(3, "1000", 4)         = 4
[pid 12498] close(3)                    = 0
[pid 12498] memfd_create("syzkaller", 0) = 3
[pid 12498] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12498] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12498] munmap(0x7fd990e3c000, 32768) = 0
[pid 12498] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12498] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12498] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12498] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12498] close(4)                    = 0
[pid 12498] close(3)                    = 0
[pid 12498] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12498] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12498] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12498] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12498] open("./bus", O_RDONLY)     = 3
[pid 12498] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12498] exit_group(0)               = ?
[pid 12498] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12498, 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 12499 attached
, child_tidptr=0x55555567f5d0) = 12499
[pid 12499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12499] setpgid(0, 0)               = 0
[pid 12499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12499] write(3, "1000", 4)         = 4
[pid 12499] close(3)                    = 0
[pid 12499] memfd_create("syzkaller", 0) = 3
[pid 12499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12499] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12499] munmap(0x7fd990e3c000, 32768) = 0
[pid 12499] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12499] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12499] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12499] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12499] close(4)                    = 0
[pid 12499] close(3)                    = 0
[pid 12499] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12499] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12499] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12499] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12499] open("./bus", O_RDONLY)     = 3
[pid 12499] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12499] exit_group(0)               = ?
[pid 12499] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12499, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12500
./strace-static-x86_64: Process 12500 attached
[pid 12500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12500] setpgid(0, 0)               = 0
[pid 12500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12500] write(3, "1000", 4)         = 4
[pid 12500] close(3)                    = 0
[pid 12500] memfd_create("syzkaller", 0) = 3
[pid 12500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12500] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12500] munmap(0x7fd990e3c000, 32768) = 0
[pid 12500] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12500] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12500] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12500] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12500] close(4)                    = 0
[pid 12500] close(3)                    = 0
[pid 12500] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12500] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12500] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12500] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12500] open("./bus", O_RDONLY)     = 3
[pid 12500] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12500] exit_group(0)               = ?
[pid 12500] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12500, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12501
./strace-static-x86_64: Process 12501 attached
[pid 12501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12501] setpgid(0, 0)               = 0
[pid 12501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12501] write(3, "1000", 4)         = 4
[pid 12501] close(3)                    = 0
[pid 12501] memfd_create("syzkaller", 0) = 3
[pid 12501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12501] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12501] munmap(0x7fd990e3c000, 32768) = 0
[pid 12501] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12501] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12501] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12501] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12501] close(4)                    = 0
[pid 12501] close(3)                    = 0
[pid 12501] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12501] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12501] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12501] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12501] open("./bus", O_RDONLY)     = 3
[pid 12501] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12501] exit_group(0)               = ?
[pid 12501] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12501, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12502
./strace-static-x86_64: Process 12502 attached
[pid 12502] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12502] setpgid(0, 0)               = 0
[pid 12502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12502] write(3, "1000", 4)         = 4
[pid 12502] close(3)                    = 0
[pid 12502] memfd_create("syzkaller", 0) = 3
[pid 12502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12502] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12502] munmap(0x7fd990e3c000, 32768) = 0
[pid 12502] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12502] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12502] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12502] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12502] close(4)                    = 0
[pid 12502] close(3)                    = 0
[pid 12502] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12502] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12502] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12502] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12502] open("./bus", O_RDONLY)     = 3
[pid 12502] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12502] exit_group(0)               = ?
[pid 12502] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12502, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12503
./strace-static-x86_64: Process 12503 attached
[pid 12503] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12503] setpgid(0, 0)               = 0
[pid 12503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12503] write(3, "1000", 4)         = 4
[pid 12503] close(3)                    = 0
[pid 12503] memfd_create("syzkaller", 0) = 3
[pid 12503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12503] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12503] munmap(0x7fd990e3c000, 32768) = 0
[pid 12503] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12503] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12503] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12503] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12503] close(4)                    = 0
[pid 12503] close(3)                    = 0
[pid 12503] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12503] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12503] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12503] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12503] open("./bus", O_RDONLY)     = 3
[pid 12503] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12503] exit_group(0)               = ?
[pid 12503] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12503, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12504
./strace-static-x86_64: Process 12504 attached
[pid 12504] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12504] setpgid(0, 0)               = 0
[pid 12504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12504] write(3, "1000", 4)         = 4
[pid 12504] close(3)                    = 0
[pid 12504] memfd_create("syzkaller", 0) = 3
[pid 12504] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12504] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12504] munmap(0x7fd990e3c000, 32768) = 0
[pid 12504] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12504] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12504] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12504] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12504] close(4)                    = 0
[pid 12504] close(3)                    = 0
[pid 12504] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12504] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12504] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12504] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12504] open("./bus", O_RDONLY)     = 3
[pid 12504] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12504] exit_group(0)               = ?
[pid 12504] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12504, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12505
./strace-static-x86_64: Process 12505 attached
[pid 12505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12505] setpgid(0, 0)               = 0
[pid 12505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12505] write(3, "1000", 4)         = 4
[pid 12505] close(3)                    = 0
[pid 12505] memfd_create("syzkaller", 0) = 3
[pid 12505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12505] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12505] munmap(0x7fd990e3c000, 32768) = 0
[pid 12505] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12505] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12505] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12505] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12505] close(4)                    = 0
[pid 12505] close(3)                    = 0
[pid 12505] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12505] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12505] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12505] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12505] open("./bus", O_RDONLY)     = 3
[pid 12505] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12505] exit_group(0)               = ?
[pid 12505] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12505, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12506
./strace-static-x86_64: Process 12506 attached
[pid 12506] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12506] setpgid(0, 0)               = 0
[pid 12506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12506] write(3, "1000", 4)         = 4
[pid 12506] close(3)                    = 0
[pid 12506] memfd_create("syzkaller", 0) = 3
[pid 12506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12506] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12506] munmap(0x7fd990e3c000, 32768) = 0
[pid 12506] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12506] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12506] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12506] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12506] close(4)                    = 0
[pid 12506] close(3)                    = 0
[pid 12506] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12506] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12506] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12506] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12506] open("./bus", O_RDONLY)     = 3
[pid 12506] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12506] exit_group(0)               = ?
[pid 12506] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12506, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12507
./strace-static-x86_64: Process 12507 attached
[pid 12507] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12507] setpgid(0, 0)               = 0
[pid 12507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12507] write(3, "1000", 4)         = 4
[pid 12507] close(3)                    = 0
[pid 12507] memfd_create("syzkaller", 0) = 3
[pid 12507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12507] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12507] munmap(0x7fd990e3c000, 32768) = 0
[pid 12507] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12507] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12507] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12507] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12507] close(4)                    = 0
[pid 12507] close(3)                    = 0
[pid 12507] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12507] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12507] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12507] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12507] open("./bus", O_RDONLY)     = 3
[pid 12507] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12507] exit_group(0)               = ?
[pid 12507] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12507, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12508 attached
, child_tidptr=0x55555567f5d0) = 12508
[pid 12508] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12508] setpgid(0, 0)               = 0
[pid 12508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12508] write(3, "1000", 4)         = 4
[pid 12508] close(3)                    = 0
[pid 12508] memfd_create("syzkaller", 0) = 3
[pid 12508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12508] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12508] munmap(0x7fd990e3c000, 32768) = 0
[pid 12508] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12508] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12508] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12508] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12508] close(4)                    = 0
[pid 12508] close(3)                    = 0
[pid 12508] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12508] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12508] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12508] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12508] open("./bus", O_RDONLY)     = 3
[pid 12508] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12508] exit_group(0)               = ?
[pid 12508] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12508, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12509 attached
 <unfinished ...>
[pid 12509] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 12509
[pid 12509] <... prctl resumed>)        = 0
[pid 12509] setpgid(0, 0)               = 0
[pid 12509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12509] write(3, "1000", 4)         = 4
[pid 12509] close(3)                    = 0
[pid 12509] memfd_create("syzkaller", 0) = 3
[pid 12509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12509] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12509] munmap(0x7fd990e3c000, 32768) = 0
[pid 12509] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12509] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12509] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12509] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12509] close(4)                    = 0
[pid 12509] close(3)                    = 0
[pid 12509] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12509] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12509] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12509] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12509] open("./bus", O_RDONLY)     = 3
[pid 12509] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12509] exit_group(0)               = ?
[pid 12509] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12509, 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=0x55555567f5d0) = 12510
./strace-static-x86_64: Process 12510 attached
[pid 12510] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12510] setpgid(0, 0)               = 0
[pid 12510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12510] write(3, "1000", 4)         = 4
[pid 12510] close(3)                    = 0
[pid 12510] memfd_create("syzkaller", 0) = 3
[pid 12510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12510] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12510] munmap(0x7fd990e3c000, 32768) = 0
[pid 12510] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12510] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12510] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12510] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12510] close(4)                    = 0
[pid 12510] close(3)                    = 0
[pid 12510] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12510] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12510] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12510] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12510] open("./bus", O_RDONLY)     = 3
[pid 12510] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12510] exit_group(0)               = ?
[pid 12510] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12510, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12511
./strace-static-x86_64: Process 12511 attached
[pid 12511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12511] setpgid(0, 0)               = 0
[pid 12511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12511] write(3, "1000", 4)         = 4
[pid 12511] close(3)                    = 0
[pid 12511] memfd_create("syzkaller", 0) = 3
[pid 12511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12511] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12511] munmap(0x7fd990e3c000, 32768) = 0
[pid 12511] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12511] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12511] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12511] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12511] close(4)                    = 0
[pid 12511] close(3)                    = 0
[pid 12511] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12511] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12511] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12511] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12511] open("./bus", O_RDONLY)     = 3
[pid 12511] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12511] exit_group(0)               = ?
[pid 12511] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12511, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12512 attached
, child_tidptr=0x55555567f5d0) = 12512
[pid 12512] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12512] setpgid(0, 0)               = 0
[pid 12512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12512] write(3, "1000", 4)         = 4
[pid 12512] close(3)                    = 0
[pid 12512] memfd_create("syzkaller", 0) = 3
[pid 12512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12512] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12512] munmap(0x7fd990e3c000, 32768) = 0
[pid 12512] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12512] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12512] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12512] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12512] close(4)                    = 0
[pid 12512] close(3)                    = 0
[pid 12512] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12512] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12512] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12512] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12512] open("./bus", O_RDONLY)     = 3
[pid 12512] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12512] exit_group(0)               = ?
[pid 12512] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12512, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12513
./strace-static-x86_64: Process 12513 attached
[pid 12513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12513] setpgid(0, 0)               = 0
[pid 12513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12513] write(3, "1000", 4)         = 4
[pid 12513] close(3)                    = 0
[pid 12513] memfd_create("syzkaller", 0) = 3
[pid 12513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12513] munmap(0x7fd990e3c000, 32768) = 0
[pid 12513] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12513] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12513] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12513] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12513] close(4)                    = 0
[pid 12513] close(3)                    = 0
[pid 12513] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12513] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12513] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12513] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12513] open("./bus", O_RDONLY)     = 3
[pid 12513] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12513] exit_group(0)               = ?
[pid 12513] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12513, 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 12514 attached
, child_tidptr=0x55555567f5d0) = 12514
[pid 12514] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12514] setpgid(0, 0)               = 0
[pid 12514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12514] write(3, "1000", 4)         = 4
[pid 12514] close(3)                    = 0
[pid 12514] memfd_create("syzkaller", 0) = 3
[pid 12514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12514] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12514] munmap(0x7fd990e3c000, 32768) = 0
[pid 12514] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12514] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12514] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12514] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12514] close(4)                    = 0
[pid 12514] close(3)                    = 0
[pid 12514] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12514] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12514] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12514] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12514] open("./bus", O_RDONLY)     = 3
[pid 12514] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12514] exit_group(0)               = ?
[pid 12514] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12514, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12515 attached
, child_tidptr=0x55555567f5d0) = 12515
[pid 12515] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12515] setpgid(0, 0)               = 0
[pid 12515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12515] write(3, "1000", 4)         = 4
[pid 12515] close(3)                    = 0
[pid 12515] memfd_create("syzkaller", 0) = 3
[pid 12515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12515] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12515] munmap(0x7fd990e3c000, 32768) = 0
[pid 12515] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12515] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12515] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12515] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12515] close(4)                    = 0
[pid 12515] close(3)                    = 0
[pid 12515] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12515] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12515] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12515] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12515] open("./bus", O_RDONLY)     = 3
[pid 12515] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12515] exit_group(0)               = ?
[pid 12515] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12515, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12516
./strace-static-x86_64: Process 12516 attached
[pid 12516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12516] setpgid(0, 0)               = 0
[pid 12516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12516] write(3, "1000", 4)         = 4
[pid 12516] close(3)                    = 0
[pid 12516] memfd_create("syzkaller", 0) = 3
[pid 12516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12516] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12516] munmap(0x7fd990e3c000, 32768) = 0
[pid 12516] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12516] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12516] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12516] close(4)                    = 0
[pid 12516] close(3)                    = 0
[pid 12516] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12516] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12516] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12516] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12516] open("./bus", O_RDONLY)     = 3
[pid 12516] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12516] exit_group(0)               = ?
[pid 12516] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12516, 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 12517 attached
, child_tidptr=0x55555567f5d0) = 12517
[pid 12517] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12517] setpgid(0, 0)               = 0
[pid 12517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12517] write(3, "1000", 4)         = 4
[pid 12517] close(3)                    = 0
[pid 12517] memfd_create("syzkaller", 0) = 3
[pid 12517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12517] munmap(0x7fd990e3c000, 32768) = 0
[pid 12517] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12517] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12517] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12517] close(4)                    = 0
[pid 12517] close(3)                    = 0
[pid 12517] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12517] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12517] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12517] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12517] open("./bus", O_RDONLY)     = 3
[pid 12517] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12517] exit_group(0)               = ?
[pid 12517] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12517, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12518 attached
, child_tidptr=0x55555567f5d0) = 12518
[pid 12518] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12518] setpgid(0, 0)               = 0
[pid 12518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12518] write(3, "1000", 4)         = 4
[pid 12518] close(3)                    = 0
[pid 12518] memfd_create("syzkaller", 0) = 3
[pid 12518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12518] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12518] munmap(0x7fd990e3c000, 32768) = 0
[pid 12518] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12518] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12518] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12518] close(4)                    = 0
[pid 12518] close(3)                    = 0
[pid 12518] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12518] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12518] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12518] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12518] open("./bus", O_RDONLY)     = 3
[pid 12518] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12518] exit_group(0)               = ?
[pid 12518] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12518, 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 12519 attached
, child_tidptr=0x55555567f5d0) = 12519
[pid 12519] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12519] setpgid(0, 0)               = 0
[pid 12519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12519] write(3, "1000", 4)         = 4
[pid 12519] close(3)                    = 0
[pid 12519] memfd_create("syzkaller", 0) = 3
[pid 12519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12519] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12519] munmap(0x7fd990e3c000, 32768) = 0
[pid 12519] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12519] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12519] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12519] close(4)                    = 0
[pid 12519] close(3)                    = 0
[pid 12519] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12519] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12519] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12519] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12519] open("./bus", O_RDONLY)     = 3
[pid 12519] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12519] exit_group(0)               = ?
[pid 12519] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12519, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12520
./strace-static-x86_64: Process 12520 attached
[pid 12520] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12520] setpgid(0, 0)               = 0
[pid 12520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12520] write(3, "1000", 4)         = 4
[pid 12520] close(3)                    = 0
[pid 12520] memfd_create("syzkaller", 0) = 3
[pid 12520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12520] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12520] munmap(0x7fd990e3c000, 32768) = 0
[pid 12520] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12520] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12520] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12520] close(4)                    = 0
[pid 12520] close(3)                    = 0
[pid 12520] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12520] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12520] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12520] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12520] open("./bus", O_RDONLY)     = 3
[pid 12520] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12520] exit_group(0)               = ?
[pid 12520] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12520, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12521 attached
, child_tidptr=0x55555567f5d0) = 12521
[pid 12521] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12521] setpgid(0, 0)               = 0
[pid 12521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12521] write(3, "1000", 4)         = 4
[pid 12521] close(3)                    = 0
[pid 12521] memfd_create("syzkaller", 0) = 3
[pid 12521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12521] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12521] munmap(0x7fd990e3c000, 32768) = 0
[pid 12521] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12521] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12521] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12521] close(4)                    = 0
[pid 12521] close(3)                    = 0
[pid 12521] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12521] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12521] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12521] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12521] open("./bus", O_RDONLY)     = 3
[pid 12521] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12521] exit_group(0)               = ?
[pid 12521] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12521, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12522
./strace-static-x86_64: Process 12522 attached
[pid 12522] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12522] setpgid(0, 0)               = 0
[pid 12522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12522] write(3, "1000", 4)         = 4
[pid 12522] close(3)                    = 0
[pid 12522] memfd_create("syzkaller", 0) = 3
[pid 12522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12522] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12522] munmap(0x7fd990e3c000, 32768) = 0
[pid 12522] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12522] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12522] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12522] close(4)                    = 0
[pid 12522] close(3)                    = 0
[pid 12522] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12522] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12522] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12522] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12522] open("./bus", O_RDONLY)     = 3
[pid 12522] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12522] exit_group(0)               = ?
[pid 12522] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12522, 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 12523 attached
, child_tidptr=0x55555567f5d0) = 12523
[pid 12523] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12523] setpgid(0, 0)               = 0
[pid 12523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12523] write(3, "1000", 4)         = 4
[pid 12523] close(3)                    = 0
[pid 12523] memfd_create("syzkaller", 0) = 3
[pid 12523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12523] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12523] munmap(0x7fd990e3c000, 32768) = 0
[pid 12523] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12523] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12523] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12523] close(4)                    = 0
[pid 12523] close(3)                    = 0
[pid 12523] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12523] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12523] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12523] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12523] open("./bus", O_RDONLY)     = 3
[pid 12523] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12523] exit_group(0)               = ?
[pid 12523] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12523, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12524
./strace-static-x86_64: Process 12524 attached
[pid 12524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12524] setpgid(0, 0)               = 0
[pid 12524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12524] write(3, "1000", 4)         = 4
[pid 12524] close(3)                    = 0
[pid 12524] memfd_create("syzkaller", 0) = 3
[pid 12524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12524] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12524] munmap(0x7fd990e3c000, 32768) = 0
[pid 12524] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12524] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12524] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12524] close(4)                    = 0
[pid 12524] close(3)                    = 0
[pid 12524] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12524] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12524] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12524] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12524] open("./bus", O_RDONLY)     = 3
[pid 12524] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12524] exit_group(0)               = ?
[pid 12524] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12524, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12525
./strace-static-x86_64: Process 12525 attached
[pid 12525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12525] setpgid(0, 0)               = 0
[pid 12525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12525] write(3, "1000", 4)         = 4
[pid 12525] close(3)                    = 0
[pid 12525] memfd_create("syzkaller", 0) = 3
[pid 12525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12525] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12525] munmap(0x7fd990e3c000, 32768) = 0
[pid 12525] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12525] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12525] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12525] close(4)                    = 0
[pid 12525] close(3)                    = 0
[pid 12525] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12525] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12525] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12525] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12525] open("./bus", O_RDONLY)     = 3
[pid 12525] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12525] exit_group(0)               = ?
[pid 12525] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12525, 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=0x55555567f5d0) = 12526
./strace-static-x86_64: Process 12526 attached
[pid 12526] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12526] setpgid(0, 0)               = 0
[pid 12526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12526] write(3, "1000", 4)         = 4
[pid 12526] close(3)                    = 0
[pid 12526] memfd_create("syzkaller", 0) = 3
[pid 12526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12526] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12526] munmap(0x7fd990e3c000, 32768) = 0
[pid 12526] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12526] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12526] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12526] close(4)                    = 0
[pid 12526] close(3)                    = 0
[pid 12526] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12526] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12526] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12526] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12526] open("./bus", O_RDONLY)     = 3
[pid 12526] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12526] exit_group(0)               = ?
[pid 12526] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12526, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12527
./strace-static-x86_64: Process 12527 attached
[pid 12527] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12527] setpgid(0, 0)               = 0
[pid 12527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12527] write(3, "1000", 4)         = 4
[pid 12527] close(3)                    = 0
[pid 12527] memfd_create("syzkaller", 0) = 3
[pid 12527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12527] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12527] munmap(0x7fd990e3c000, 32768) = 0
[pid 12527] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12527] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12527] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12527] close(4)                    = 0
[pid 12527] close(3)                    = 0
[pid 12527] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12527] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12527] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12527] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12527] open("./bus", O_RDONLY)     = 3
[pid 12527] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12527] exit_group(0)               = ?
[pid 12527] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12527, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12528 attached
, child_tidptr=0x55555567f5d0) = 12528
[pid 12528] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12528] setpgid(0, 0)               = 0
[pid 12528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12528] write(3, "1000", 4)         = 4
[pid 12528] close(3)                    = 0
[pid 12528] memfd_create("syzkaller", 0) = 3
[pid 12528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12528] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12528] munmap(0x7fd990e3c000, 32768) = 0
[pid 12528] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12528] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12528] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12528] close(4)                    = 0
[pid 12528] close(3)                    = 0
[pid 12528] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12528] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12528] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12528] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12528] open("./bus", O_RDONLY)     = 3
[pid 12528] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12528] exit_group(0)               = ?
[pid 12528] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12528, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12529
./strace-static-x86_64: Process 12529 attached
[pid 12529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12529] setpgid(0, 0)               = 0
[pid 12529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12529] write(3, "1000", 4)         = 4
[pid 12529] close(3)                    = 0
[pid 12529] memfd_create("syzkaller", 0) = 3
[pid 12529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12529] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12529] munmap(0x7fd990e3c000, 32768) = 0
[pid 12529] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12529] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12529] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12529] close(4)                    = 0
[pid 12529] close(3)                    = 0
[pid 12529] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12529] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12529] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12529] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12529] open("./bus", O_RDONLY)     = 3
[pid 12529] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12529] exit_group(0)               = ?
[pid 12529] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12529, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12530 attached
, child_tidptr=0x55555567f5d0) = 12530
[pid 12530] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12530] setpgid(0, 0)               = 0
[pid 12530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12530] write(3, "1000", 4)         = 4
[pid 12530] close(3)                    = 0
[pid 12530] memfd_create("syzkaller", 0) = 3
[pid 12530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12530] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12530] munmap(0x7fd990e3c000, 32768) = 0
[pid 12530] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12530] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12530] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12530] close(4)                    = 0
[pid 12530] close(3)                    = 0
[pid 12530] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12530] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12530] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12530] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12530] open("./bus", O_RDONLY)     = 3
[pid 12530] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12530] exit_group(0)               = ?
[pid 12530] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12530, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12531
./strace-static-x86_64: Process 12531 attached
[pid 12531] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12531] setpgid(0, 0)               = 0
[pid 12531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12531] write(3, "1000", 4)         = 4
[pid 12531] close(3)                    = 0
[pid 12531] memfd_create("syzkaller", 0) = 3
[pid 12531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12531] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12531] munmap(0x7fd990e3c000, 32768) = 0
[pid 12531] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12531] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12531] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12531] close(4)                    = 0
[pid 12531] close(3)                    = 0
[pid 12531] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12531] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12531] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12531] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12531] open("./bus", O_RDONLY)     = 3
[pid 12531] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12531] exit_group(0)               = ?
[pid 12531] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12531, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12532
./strace-static-x86_64: Process 12532 attached
[pid 12532] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12532] setpgid(0, 0)               = 0
[pid 12532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12532] write(3, "1000", 4)         = 4
[pid 12532] close(3)                    = 0
[pid 12532] memfd_create("syzkaller", 0) = 3
[pid 12532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12532] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12532] munmap(0x7fd990e3c000, 32768) = 0
[pid 12532] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12532] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12532] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12532] close(4)                    = 0
[pid 12532] close(3)                    = 0
[pid 12532] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12532] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12532] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12532] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12532] open("./bus", O_RDONLY)     = 3
[pid 12532] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12532] exit_group(0)               = ?
[pid 12532] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12532, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12533
./strace-static-x86_64: Process 12533 attached
[pid 12533] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12533] setpgid(0, 0)               = 0
[pid 12533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12533] write(3, "1000", 4)         = 4
[pid 12533] close(3)                    = 0
[pid 12533] memfd_create("syzkaller", 0) = 3
[pid 12533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12533] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12533] munmap(0x7fd990e3c000, 32768) = 0
[pid 12533] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12533] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12533] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12533] close(4)                    = 0
[pid 12533] close(3)                    = 0
[pid 12533] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12533] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12533] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12533] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12533] open("./bus", O_RDONLY)     = 3
[pid 12533] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12533] exit_group(0)               = ?
[pid 12533] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12533, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12534
./strace-static-x86_64: Process 12534 attached
[pid 12534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12534] setpgid(0, 0)               = 0
[pid 12534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12534] write(3, "1000", 4)         = 4
[pid 12534] close(3)                    = 0
[pid 12534] memfd_create("syzkaller", 0) = 3
[pid 12534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12534] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12534] munmap(0x7fd990e3c000, 32768) = 0
[pid 12534] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12534] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12534] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12534] close(4)                    = 0
[pid 12534] close(3)                    = 0
[pid 12534] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12534] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12534] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12534] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12534] open("./bus", O_RDONLY)     = 3
[pid 12534] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12534] exit_group(0)               = ?
[pid 12534] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12534, 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 12535 attached
, child_tidptr=0x55555567f5d0) = 12535
[pid 12535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12535] setpgid(0, 0)               = 0
[pid 12535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12535] write(3, "1000", 4)         = 4
[pid 12535] close(3)                    = 0
[pid 12535] memfd_create("syzkaller", 0) = 3
[pid 12535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12535] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12535] munmap(0x7fd990e3c000, 32768) = 0
[pid 12535] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12535] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12535] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12535] close(4)                    = 0
[pid 12535] close(3)                    = 0
[pid 12535] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12535] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12535] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12535] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12535] open("./bus", O_RDONLY)     = 3
[pid 12535] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12535] exit_group(0)               = ?
[pid 12535] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12535, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12536
./strace-static-x86_64: Process 12536 attached
[pid 12536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12536] setpgid(0, 0)               = 0
[pid 12536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12536] write(3, "1000", 4)         = 4
[pid 12536] close(3)                    = 0
[pid 12536] memfd_create("syzkaller", 0) = 3
[pid 12536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12536] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12536] munmap(0x7fd990e3c000, 32768) = 0
[pid 12536] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12536] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12536] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12536] close(4)                    = 0
[pid 12536] close(3)                    = 0
[pid 12536] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12536] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12536] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12536] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12536] open("./bus", O_RDONLY)     = 3
[pid 12536] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12536] exit_group(0)               = ?
[pid 12536] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12536, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12537
./strace-static-x86_64: Process 12537 attached
[pid 12537] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12537] setpgid(0, 0)               = 0
[pid 12537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12537] write(3, "1000", 4)         = 4
[pid 12537] close(3)                    = 0
[pid 12537] memfd_create("syzkaller", 0) = 3
[pid 12537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12537] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12537] munmap(0x7fd990e3c000, 32768) = 0
[pid 12537] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12537] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12537] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12537] close(4)                    = 0
[pid 12537] close(3)                    = 0
[pid 12537] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12537] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12537] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12537] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12537] open("./bus", O_RDONLY)     = 3
[pid 12537] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12537] exit_group(0)               = ?
[pid 12537] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12537, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12538
./strace-static-x86_64: Process 12538 attached
[pid 12538] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12538] setpgid(0, 0)               = 0
[pid 12538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12538] write(3, "1000", 4)         = 4
[pid 12538] close(3)                    = 0
[pid 12538] memfd_create("syzkaller", 0) = 3
[pid 12538] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12538] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12538] munmap(0x7fd990e3c000, 32768) = 0
[pid 12538] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12538] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12538] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12538] close(4)                    = 0
[pid 12538] close(3)                    = 0
[pid 12538] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12538] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12538] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12538] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12538] open("./bus", O_RDONLY)     = 3
[pid 12538] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12538] exit_group(0)               = ?
[pid 12538] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12538, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12539
./strace-static-x86_64: Process 12539 attached
[pid 12539] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12539] setpgid(0, 0)               = 0
[pid 12539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12539] write(3, "1000", 4)         = 4
[pid 12539] close(3)                    = 0
[pid 12539] memfd_create("syzkaller", 0) = 3
[pid 12539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12539] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12539] munmap(0x7fd990e3c000, 32768) = 0
[pid 12539] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12539] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12539] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12539] close(4)                    = 0
[pid 12539] close(3)                    = 0
[pid 12539] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12539] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12539] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12539] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12539] open("./bus", O_RDONLY)     = 3
[pid 12539] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12539] exit_group(0)               = ?
[pid 12539] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12539, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12540
./strace-static-x86_64: Process 12540 attached
[pid 12540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12540] setpgid(0, 0)               = 0
[pid 12540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12540] write(3, "1000", 4)         = 4
[pid 12540] close(3)                    = 0
[pid 12540] memfd_create("syzkaller", 0) = 3
[pid 12540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12540] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12540] munmap(0x7fd990e3c000, 32768) = 0
[pid 12540] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12540] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12540] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12540] close(4)                    = 0
[pid 12540] close(3)                    = 0
[pid 12540] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12540] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12540] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12540] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12540] open("./bus", O_RDONLY)     = 3
[pid 12540] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12540] exit_group(0)               = ?
[pid 12540] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12540, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12541
./strace-static-x86_64: Process 12541 attached
[pid 12541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12541] setpgid(0, 0)               = 0
[pid 12541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12541] write(3, "1000", 4)         = 4
[pid 12541] close(3)                    = 0
[pid 12541] memfd_create("syzkaller", 0) = 3
[pid 12541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12541] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12541] munmap(0x7fd990e3c000, 32768) = 0
[pid 12541] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12541] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12541] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12541] close(4)                    = 0
[pid 12541] close(3)                    = 0
[pid 12541] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12541] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12541] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12541] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12541] open("./bus", O_RDONLY)     = 3
[pid 12541] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12541] exit_group(0)               = ?
[pid 12541] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12541, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12542 attached
, child_tidptr=0x55555567f5d0) = 12542
[pid 12542] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12542] setpgid(0, 0)               = 0
[pid 12542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12542] write(3, "1000", 4)         = 4
[pid 12542] close(3)                    = 0
[pid 12542] memfd_create("syzkaller", 0) = 3
[pid 12542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12542] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12542] munmap(0x7fd990e3c000, 32768) = 0
[pid 12542] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12542] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12542] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12542] close(4)                    = 0
[pid 12542] close(3)                    = 0
[pid 12542] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12542] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12542] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12542] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12542] open("./bus", O_RDONLY)     = 3
[pid 12542] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12542] exit_group(0)               = ?
[pid 12542] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12542, 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=0x55555567f5d0) = 12543
./strace-static-x86_64: Process 12543 attached
[pid 12543] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12543] setpgid(0, 0)               = 0
[pid 12543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12543] write(3, "1000", 4)         = 4
[pid 12543] close(3)                    = 0
[pid 12543] memfd_create("syzkaller", 0) = 3
[pid 12543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12543] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12543] munmap(0x7fd990e3c000, 32768) = 0
[pid 12543] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12543] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12543] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12543] close(4)                    = 0
[pid 12543] close(3)                    = 0
[pid 12543] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12543] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12543] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12543] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12543] open("./bus", O_RDONLY)     = 3
[pid 12543] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12543] exit_group(0)               = ?
[pid 12543] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12543, 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 12544 attached
, child_tidptr=0x55555567f5d0) = 12544
[pid 12544] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12544] setpgid(0, 0)               = 0
[pid 12544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12544] write(3, "1000", 4)         = 4
[pid 12544] close(3)                    = 0
[pid 12544] memfd_create("syzkaller", 0) = 3
[pid 12544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12544] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12544] munmap(0x7fd990e3c000, 32768) = 0
[pid 12544] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12544] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12544] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12544] close(4)                    = 0
[pid 12544] close(3)                    = 0
[pid 12544] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12544] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12544] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12544] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12544] open("./bus", O_RDONLY)     = 3
[pid 12544] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12544] exit_group(0)               = ?
[pid 12544] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12544, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12545
./strace-static-x86_64: Process 12545 attached
[pid 12545] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12545] setpgid(0, 0)               = 0
[pid 12545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12545] write(3, "1000", 4)         = 4
[pid 12545] close(3)                    = 0
[pid 12545] memfd_create("syzkaller", 0) = 3
[pid 12545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12545] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12545] munmap(0x7fd990e3c000, 32768) = 0
[pid 12545] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12545] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12545] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12545] close(4)                    = 0
[pid 12545] close(3)                    = 0
[pid 12545] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12545] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12545] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12545] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12545] open("./bus", O_RDONLY)     = 3
[pid 12545] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12545] exit_group(0)               = ?
[pid 12545] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12545, 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 12546 attached
, child_tidptr=0x55555567f5d0) = 12546
[pid 12546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12546] setpgid(0, 0)               = 0
[pid 12546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12546] write(3, "1000", 4)         = 4
[pid 12546] close(3)                    = 0
[pid 12546] memfd_create("syzkaller", 0) = 3
[pid 12546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12546] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12546] munmap(0x7fd990e3c000, 32768) = 0
[pid 12546] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12546] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12546] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12546] close(4)                    = 0
[pid 12546] close(3)                    = 0
[pid 12546] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12546] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12546] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12546] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12546] open("./bus", O_RDONLY)     = 3
[pid 12546] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12546] exit_group(0)               = ?
[pid 12546] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12546, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12547 attached
, child_tidptr=0x55555567f5d0) = 12547
[pid 12547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12547] setpgid(0, 0)               = 0
[pid 12547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12547] write(3, "1000", 4)         = 4
[pid 12547] close(3)                    = 0
[pid 12547] memfd_create("syzkaller", 0) = 3
[pid 12547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12547] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12547] munmap(0x7fd990e3c000, 32768) = 0
[pid 12547] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12547] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12547] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12547] close(4)                    = 0
[pid 12547] close(3)                    = 0
[pid 12547] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12547] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12547] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12547] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12547] open("./bus", O_RDONLY)     = 3
[pid 12547] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12547] exit_group(0)               = ?
[pid 12547] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12547, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12548
./strace-static-x86_64: Process 12548 attached
[pid 12548] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12548] setpgid(0, 0)               = 0
[pid 12548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12548] write(3, "1000", 4)         = 4
[pid 12548] close(3)                    = 0
[pid 12548] memfd_create("syzkaller", 0) = 3
[pid 12548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12548] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12548] munmap(0x7fd990e3c000, 32768) = 0
[pid 12548] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12548] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12548] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12548] close(4)                    = 0
[pid 12548] close(3)                    = 0
[pid 12548] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12548] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12548] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12548] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12548] open("./bus", O_RDONLY)     = 3
[pid 12548] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12548] exit_group(0)               = ?
[pid 12548] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12548, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12549
./strace-static-x86_64: Process 12549 attached
[pid 12549] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12549] setpgid(0, 0)               = 0
[pid 12549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12549] write(3, "1000", 4)         = 4
[pid 12549] close(3)                    = 0
[pid 12549] memfd_create("syzkaller", 0) = 3
[pid 12549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12549] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12549] munmap(0x7fd990e3c000, 32768) = 0
[pid 12549] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12549] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12549] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12549] close(4)                    = 0
[pid 12549] close(3)                    = 0
[pid 12549] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12549] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12549] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12549] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12549] open("./bus", O_RDONLY)     = 3
[pid 12549] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12549] exit_group(0)               = ?
[pid 12549] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12549, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12550
./strace-static-x86_64: Process 12550 attached
[pid 12550] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12550] setpgid(0, 0)               = 0
[pid 12550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12550] write(3, "1000", 4)         = 4
[pid 12550] close(3)                    = 0
[pid 12550] memfd_create("syzkaller", 0) = 3
[pid 12550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12550] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12550] munmap(0x7fd990e3c000, 32768) = 0
[pid 12550] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12550] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12550] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12550] close(4)                    = 0
[pid 12550] close(3)                    = 0
[pid 12550] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12550] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12550] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12550] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12550] open("./bus", O_RDONLY)     = 3
[pid 12550] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12550] exit_group(0)               = ?
[pid 12550] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12550, 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 12551 attached
, child_tidptr=0x55555567f5d0) = 12551
[pid 12551] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12551] setpgid(0, 0)               = 0
[pid 12551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12551] write(3, "1000", 4)         = 4
[pid 12551] close(3)                    = 0
[pid 12551] memfd_create("syzkaller", 0) = 3
[pid 12551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12551] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12551] munmap(0x7fd990e3c000, 32768) = 0
[pid 12551] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12551] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12551] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12551] close(4)                    = 0
[pid 12551] close(3)                    = 0
[pid 12551] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12551] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12551] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12551] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12551] open("./bus", O_RDONLY)     = 3
[pid 12551] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12551] exit_group(0)               = ?
[pid 12551] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12551, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12552
./strace-static-x86_64: Process 12552 attached
[pid 12552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12552] setpgid(0, 0)               = 0
[pid 12552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12552] write(3, "1000", 4)         = 4
[pid 12552] close(3)                    = 0
[pid 12552] memfd_create("syzkaller", 0) = 3
[pid 12552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12552] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12552] munmap(0x7fd990e3c000, 32768) = 0
[pid 12552] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12552] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12552] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12552] close(4)                    = 0
[pid 12552] close(3)                    = 0
[pid 12552] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12552] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12552] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12552] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12552] open("./bus", O_RDONLY)     = 3
[pid 12552] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12552] exit_group(0)               = ?
[pid 12552] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12552, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12553 attached
, child_tidptr=0x55555567f5d0) = 12553
[pid 12553] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12553] setpgid(0, 0)               = 0
[pid 12553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12553] write(3, "1000", 4)         = 4
[pid 12553] close(3)                    = 0
[pid 12553] memfd_create("syzkaller", 0) = 3
[pid 12553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12553] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12553] munmap(0x7fd990e3c000, 32768) = 0
[pid 12553] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12553] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12553] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12553] close(4)                    = 0
[pid 12553] close(3)                    = 0
[pid 12553] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12553] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12553] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12553] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12553] open("./bus", O_RDONLY)     = 3
[pid 12553] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12553] exit_group(0)               = ?
[pid 12553] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12553, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12554
./strace-static-x86_64: Process 12554 attached
[pid 12554] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12554] setpgid(0, 0)               = 0
[pid 12554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12554] write(3, "1000", 4)         = 4
[pid 12554] close(3)                    = 0
[pid 12554] memfd_create("syzkaller", 0) = 3
[pid 12554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12554] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12554] munmap(0x7fd990e3c000, 32768) = 0
[pid 12554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12554] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12554] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12554] close(4)                    = 0
[pid 12554] close(3)                    = 0
[pid 12554] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12554] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12554] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12554] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12554] open("./bus", O_RDONLY)     = 3
[pid 12554] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12554] exit_group(0)               = ?
[pid 12554] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12554, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12555
./strace-static-x86_64: Process 12555 attached
[pid 12555] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12555] setpgid(0, 0)               = 0
[pid 12555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12555] write(3, "1000", 4)         = 4
[pid 12555] close(3)                    = 0
[pid 12555] memfd_create("syzkaller", 0) = 3
[pid 12555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12555] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12555] munmap(0x7fd990e3c000, 32768) = 0
[pid 12555] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12555] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12555] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12555] close(4)                    = 0
[pid 12555] close(3)                    = 0
[pid 12555] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12555] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12555] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12555] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12555] open("./bus", O_RDONLY)     = 3
[pid 12555] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12555] exit_group(0)               = ?
[pid 12555] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12555, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12556
./strace-static-x86_64: Process 12556 attached
[pid 12556] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12556] setpgid(0, 0)               = 0
[pid 12556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12556] write(3, "1000", 4)         = 4
[pid 12556] close(3)                    = 0
[pid 12556] memfd_create("syzkaller", 0) = 3
[pid 12556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12556] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12556] munmap(0x7fd990e3c000, 32768) = 0
[pid 12556] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12556] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12556] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12556] close(4)                    = 0
[pid 12556] close(3)                    = 0
[pid 12556] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12556] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12556] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12556] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12556] open("./bus", O_RDONLY)     = 3
[pid 12556] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12556] exit_group(0)               = ?
[pid 12556] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12556, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12557
./strace-static-x86_64: Process 12557 attached
[pid 12557] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12557] setpgid(0, 0)               = 0
[pid 12557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12557] write(3, "1000", 4)         = 4
[pid 12557] close(3)                    = 0
[pid 12557] memfd_create("syzkaller", 0) = 3
[pid 12557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12557] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12557] munmap(0x7fd990e3c000, 32768) = 0
[pid 12557] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12557] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12557] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12557] close(4)                    = 0
[pid 12557] close(3)                    = 0
[pid 12557] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12557] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12557] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12557] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12557] open("./bus", O_RDONLY)     = 3
[pid 12557] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12557] exit_group(0)               = ?
[pid 12557] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12557, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12558
./strace-static-x86_64: Process 12558 attached
[pid 12558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12558] setpgid(0, 0)               = 0
[pid 12558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12558] write(3, "1000", 4)         = 4
[pid 12558] close(3)                    = 0
[pid 12558] memfd_create("syzkaller", 0) = 3
[pid 12558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12558] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12558] munmap(0x7fd990e3c000, 32768) = 0
[pid 12558] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12558] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12558] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12558] close(4)                    = 0
[pid 12558] close(3)                    = 0
[pid 12558] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12558] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12558] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12558] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12558] open("./bus", O_RDONLY)     = 3
[pid 12558] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12558] exit_group(0)               = ?
[pid 12558] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12558, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12559
./strace-static-x86_64: Process 12559 attached
[pid 12559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12559] setpgid(0, 0)               = 0
[pid 12559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12559] write(3, "1000", 4)         = 4
[pid 12559] close(3)                    = 0
[pid 12559] memfd_create("syzkaller", 0) = 3
[pid 12559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12559] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12559] munmap(0x7fd990e3c000, 32768) = 0
[pid 12559] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12559] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12559] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12559] close(4)                    = 0
[pid 12559] close(3)                    = 0
[pid 12559] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12559] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12559] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12559] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12559] open("./bus", O_RDONLY)     = 3
[pid 12559] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12559] exit_group(0)               = ?
[pid 12559] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12559, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12560 attached
, child_tidptr=0x55555567f5d0) = 12560
[pid 12560] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12560] setpgid(0, 0)               = 0
[pid 12560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12560] write(3, "1000", 4)         = 4
[pid 12560] close(3)                    = 0
[pid 12560] memfd_create("syzkaller", 0) = 3
[pid 12560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12560] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12560] munmap(0x7fd990e3c000, 32768) = 0
[pid 12560] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12560] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12560] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12560] close(4)                    = 0
[pid 12560] close(3)                    = 0
[pid 12560] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12560] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12560] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12560] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12560] open("./bus", O_RDONLY)     = 3
[pid 12560] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12560] exit_group(0)               = ?
[pid 12560] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12560, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12561 attached
, child_tidptr=0x55555567f5d0) = 12561
[pid 12561] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12561] setpgid(0, 0)               = 0
[pid 12561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12561] write(3, "1000", 4)         = 4
[pid 12561] close(3)                    = 0
[pid 12561] memfd_create("syzkaller", 0) = 3
[pid 12561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12561] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12561] munmap(0x7fd990e3c000, 32768) = 0
[pid 12561] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12561] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12561] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12561] close(4)                    = 0
[pid 12561] close(3)                    = 0
[pid 12561] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12561] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12561] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12561] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12561] open("./bus", O_RDONLY)     = 3
[pid 12561] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12561] exit_group(0)               = ?
[pid 12561] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12561, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12562 attached
, child_tidptr=0x55555567f5d0) = 12562
[pid 12562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12562] setpgid(0, 0)               = 0
[pid 12562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12562] write(3, "1000", 4)         = 4
[pid 12562] close(3)                    = 0
[pid 12562] memfd_create("syzkaller", 0) = 3
[pid 12562] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12562] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12562] munmap(0x7fd990e3c000, 32768) = 0
[pid 12562] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12562] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12562] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12562] close(4)                    = 0
[pid 12562] close(3)                    = 0
[pid 12562] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12562] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12562] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12562] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12562] open("./bus", O_RDONLY)     = 3
[pid 12562] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12562] exit_group(0)               = ?
[pid 12562] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12562, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12563 attached
, child_tidptr=0x55555567f5d0) = 12563
[pid 12563] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12563] setpgid(0, 0)               = 0
[pid 12563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12563] write(3, "1000", 4)         = 4
[pid 12563] close(3)                    = 0
[pid 12563] memfd_create("syzkaller", 0) = 3
[pid 12563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12563] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12563] munmap(0x7fd990e3c000, 32768) = 0
[pid 12563] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12563] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12563] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12563] close(4)                    = 0
[pid 12563] close(3)                    = 0
[pid 12563] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12563] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12563] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12563] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12563] open("./bus", O_RDONLY)     = 3
[pid 12563] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12563] exit_group(0)               = ?
[pid 12563] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12563, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12564
./strace-static-x86_64: Process 12564 attached
[pid 12564] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12564] setpgid(0, 0)               = 0
[pid 12564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12564] write(3, "1000", 4)         = 4
[pid 12564] close(3)                    = 0
[pid 12564] memfd_create("syzkaller", 0) = 3
[pid 12564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12564] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12564] munmap(0x7fd990e3c000, 32768) = 0
[pid 12564] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12564] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12564] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12564] close(4)                    = 0
[pid 12564] close(3)                    = 0
[pid 12564] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12564] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12564] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12564] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12564] open("./bus", O_RDONLY)     = 3
[pid 12564] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12564] exit_group(0)               = ?
[pid 12564] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12564, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12565
./strace-static-x86_64: Process 12565 attached
[pid 12565] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12565] setpgid(0, 0)               = 0
[pid 12565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12565] write(3, "1000", 4)         = 4
[pid 12565] close(3)                    = 0
[pid 12565] memfd_create("syzkaller", 0) = 3
[pid 12565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12565] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12565] munmap(0x7fd990e3c000, 32768) = 0
[pid 12565] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12565] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12565] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12565] close(4)                    = 0
[pid 12565] close(3)                    = 0
[pid 12565] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12565] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12565] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12565] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12565] open("./bus", O_RDONLY)     = 3
[pid 12565] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12565] exit_group(0)               = ?
[pid 12565] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12565, 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=0x55555567f5d0) = 12566
./strace-static-x86_64: Process 12566 attached
[pid 12566] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12566] setpgid(0, 0)               = 0
[pid 12566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12566] write(3, "1000", 4)         = 4
[pid 12566] close(3)                    = 0
[pid 12566] memfd_create("syzkaller", 0) = 3
[pid 12566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12566] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12566] munmap(0x7fd990e3c000, 32768) = 0
[pid 12566] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12566] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12566] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12566] close(4)                    = 0
[pid 12566] close(3)                    = 0
[pid 12566] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12566] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12566] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12566] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12566] open("./bus", O_RDONLY)     = 3
[pid 12566] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12566] exit_group(0)               = ?
[pid 12566] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12566, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12567
./strace-static-x86_64: Process 12567 attached
[pid 12567] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12567] setpgid(0, 0)               = 0
[pid 12567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12567] write(3, "1000", 4)         = 4
[pid 12567] close(3)                    = 0
[pid 12567] memfd_create("syzkaller", 0) = 3
[pid 12567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12567] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12567] munmap(0x7fd990e3c000, 32768) = 0
[pid 12567] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12567] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12567] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12567] close(4)                    = 0
[pid 12567] close(3)                    = 0
[pid 12567] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12567] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12567] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12567] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12567] open("./bus", O_RDONLY)     = 3
[pid 12567] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12567] exit_group(0)               = ?
[pid 12567] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12567, 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=0x55555567f5d0) = 12568
./strace-static-x86_64: Process 12568 attached
[pid 12568] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12568] setpgid(0, 0)               = 0
[pid 12568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12568] write(3, "1000", 4)         = 4
[pid 12568] close(3)                    = 0
[pid 12568] memfd_create("syzkaller", 0) = 3
[pid 12568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12568] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12568] munmap(0x7fd990e3c000, 32768) = 0
[pid 12568] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12568] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12568] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12568] close(4)                    = 0
[pid 12568] close(3)                    = 0
[pid 12568] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12568] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12568] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12568] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12568] open("./bus", O_RDONLY)     = 3
[pid 12568] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12568] exit_group(0)               = ?
[pid 12568] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12568, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12569 attached
, child_tidptr=0x55555567f5d0) = 12569
[pid 12569] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12569] setpgid(0, 0)               = 0
[pid 12569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12569] write(3, "1000", 4)         = 4
[pid 12569] close(3)                    = 0
[pid 12569] memfd_create("syzkaller", 0) = 3
[pid 12569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12569] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12569] munmap(0x7fd990e3c000, 32768) = 0
[pid 12569] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12569] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12569] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12569] close(4)                    = 0
[pid 12569] close(3)                    = 0
[pid 12569] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12569] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12569] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12569] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12569] open("./bus", O_RDONLY)     = 3
[pid 12569] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12569] exit_group(0)               = ?
[pid 12569] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12569, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12570 attached
, child_tidptr=0x55555567f5d0) = 12570
[pid 12570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12570] setpgid(0, 0)               = 0
[pid 12570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12570] write(3, "1000", 4)         = 4
[pid 12570] close(3)                    = 0
[pid 12570] memfd_create("syzkaller", 0) = 3
[pid 12570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12570] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12570] munmap(0x7fd990e3c000, 32768) = 0
[pid 12570] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12570] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12570] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12570] close(4)                    = 0
[pid 12570] close(3)                    = 0
[pid 12570] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12570] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12570] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12570] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12570] open("./bus", O_RDONLY)     = 3
[pid 12570] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12570] exit_group(0)               = ?
[pid 12570] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12570, 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=0x55555567f5d0) = 12571
./strace-static-x86_64: Process 12571 attached
[pid 12571] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12571] setpgid(0, 0)               = 0
[pid 12571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12571] write(3, "1000", 4)         = 4
[pid 12571] close(3)                    = 0
[pid 12571] memfd_create("syzkaller", 0) = 3
[pid 12571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12571] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12571] munmap(0x7fd990e3c000, 32768) = 0
[pid 12571] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12571] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12571] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12571] close(4)                    = 0
[pid 12571] close(3)                    = 0
[pid 12571] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12571] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12571] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12571] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12571] open("./bus", O_RDONLY)     = 3
[pid 12571] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12571] exit_group(0)               = ?
[pid 12571] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12571, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12572 attached
, child_tidptr=0x55555567f5d0) = 12572
[pid 12572] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12572] setpgid(0, 0)               = 0
[pid 12572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12572] write(3, "1000", 4)         = 4
[pid 12572] close(3)                    = 0
[pid 12572] memfd_create("syzkaller", 0) = 3
[pid 12572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12572] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12572] munmap(0x7fd990e3c000, 32768) = 0
[pid 12572] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12572] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12572] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12572] close(4)                    = 0
[pid 12572] close(3)                    = 0
[pid 12572] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12572] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12572] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12572] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12572] open("./bus", O_RDONLY)     = 3
[pid 12572] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12572] exit_group(0)               = ?
[pid 12572] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12572, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12573
./strace-static-x86_64: Process 12573 attached
[pid 12573] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12573] setpgid(0, 0)               = 0
[pid 12573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12573] write(3, "1000", 4)         = 4
[pid 12573] close(3)                    = 0
[pid 12573] memfd_create("syzkaller", 0) = 3
[pid 12573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12573] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12573] munmap(0x7fd990e3c000, 32768) = 0
[pid 12573] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12573] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12573] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12573] close(4)                    = 0
[pid 12573] close(3)                    = 0
[pid 12573] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12573] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12573] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12573] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12573] open("./bus", O_RDONLY)     = 3
[pid 12573] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12573] exit_group(0)               = ?
[pid 12573] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12573, 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=0x55555567f5d0) = 12574
./strace-static-x86_64: Process 12574 attached
[pid 12574] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12574] setpgid(0, 0)               = 0
[pid 12574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12574] write(3, "1000", 4)         = 4
[pid 12574] close(3)                    = 0
[pid 12574] memfd_create("syzkaller", 0) = 3
[pid 12574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12574] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12574] munmap(0x7fd990e3c000, 32768) = 0
[pid 12574] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12574] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12574] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12574] close(4)                    = 0
[pid 12574] close(3)                    = 0
[pid 12574] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12574] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12574] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12574] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12574] open("./bus", O_RDONLY)     = 3
[pid 12574] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12574] exit_group(0)               = ?
[pid 12574] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12574, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12575 attached
, child_tidptr=0x55555567f5d0) = 12575
[pid 12575] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12575] setpgid(0, 0)               = 0
[pid 12575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12575] write(3, "1000", 4)         = 4
[pid 12575] close(3)                    = 0
[pid 12575] memfd_create("syzkaller", 0) = 3
[pid 12575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12575] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12575] munmap(0x7fd990e3c000, 32768) = 0
[pid 12575] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12575] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12575] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12575] close(4)                    = 0
[pid 12575] close(3)                    = 0
[pid 12575] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12575] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12575] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12575] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12575] open("./bus", O_RDONLY)     = 3
[pid 12575] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12575] exit_group(0)               = ?
[pid 12575] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12575, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12576 attached
, child_tidptr=0x55555567f5d0) = 12576
[pid 12576] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12576] setpgid(0, 0)               = 0
[pid 12576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12576] write(3, "1000", 4)         = 4
[pid 12576] close(3)                    = 0
[pid 12576] memfd_create("syzkaller", 0) = 3
[pid 12576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12576] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12576] munmap(0x7fd990e3c000, 32768) = 0
[pid 12576] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12576] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12576] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12576] close(4)                    = 0
[pid 12576] close(3)                    = 0
[pid 12576] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12576] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12576] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12576] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12576] open("./bus", O_RDONLY)     = 3
[pid 12576] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12576] exit_group(0)               = ?
[pid 12576] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12576, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12577
./strace-static-x86_64: Process 12577 attached
[pid 12577] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12577] setpgid(0, 0)               = 0
[pid 12577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12577] write(3, "1000", 4)         = 4
[pid 12577] close(3)                    = 0
[pid 12577] memfd_create("syzkaller", 0) = 3
[pid 12577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12577] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12577] munmap(0x7fd990e3c000, 32768) = 0
[pid 12577] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12577] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12577] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12577] close(4)                    = 0
[pid 12577] close(3)                    = 0
[pid 12577] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12577] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12577] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12577] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12577] open("./bus", O_RDONLY)     = 3
[pid 12577] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12577] exit_group(0)               = ?
[pid 12577] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12577, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12578
./strace-static-x86_64: Process 12578 attached
[pid 12578] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12578] setpgid(0, 0)               = 0
[pid 12578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12578] write(3, "1000", 4)         = 4
[pid 12578] close(3)                    = 0
[pid 12578] memfd_create("syzkaller", 0) = 3
[pid 12578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12578] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12578] munmap(0x7fd990e3c000, 32768) = 0
[pid 12578] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12578] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12578] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12578] close(4)                    = 0
[pid 12578] close(3)                    = 0
[pid 12578] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12578] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12578] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12578] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12578] open("./bus", O_RDONLY)     = 3
[pid 12578] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12578] exit_group(0)               = ?
[pid 12578] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12578, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12579 attached
, child_tidptr=0x55555567f5d0) = 12579
[pid 12579] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12579] setpgid(0, 0)               = 0
[pid 12579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12579] write(3, "1000", 4)         = 4
[pid 12579] close(3)                    = 0
[pid 12579] memfd_create("syzkaller", 0) = 3
[pid 12579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12579] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12579] munmap(0x7fd990e3c000, 32768) = 0
[pid 12579] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12579] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12579] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12579] close(4)                    = 0
[pid 12579] close(3)                    = 0
[pid 12579] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12579] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12579] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12579] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12579] open("./bus", O_RDONLY)     = 3
[pid 12579] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12579] exit_group(0)               = ?
[pid 12579] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12579, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12580
./strace-static-x86_64: Process 12580 attached
[pid 12580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12580] setpgid(0, 0)               = 0
[pid 12580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12580] write(3, "1000", 4)         = 4
[pid 12580] close(3)                    = 0
[pid 12580] memfd_create("syzkaller", 0) = 3
[pid 12580] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12580] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12580] munmap(0x7fd990e3c000, 32768) = 0
[pid 12580] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12580] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12580] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12580] close(4)                    = 0
[pid 12580] close(3)                    = 0
[pid 12580] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12580] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12580] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12580] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12580] open("./bus", O_RDONLY)     = 3
[pid 12580] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12580] exit_group(0)               = ?
[pid 12580] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12580, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12581
./strace-static-x86_64: Process 12581 attached
[pid 12581] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12581] setpgid(0, 0)               = 0
[pid 12581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12581] write(3, "1000", 4)         = 4
[pid 12581] close(3)                    = 0
[pid 12581] memfd_create("syzkaller", 0) = 3
[pid 12581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12581] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12581] munmap(0x7fd990e3c000, 32768) = 0
[pid 12581] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12581] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12581] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12581] close(4)                    = 0
[pid 12581] close(3)                    = 0
[pid 12581] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12581] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12581] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12581] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12581] open("./bus", O_RDONLY)     = 3
[pid 12581] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12581] exit_group(0)               = ?
[pid 12581] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12581, 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=0x55555567f5d0) = 12582
./strace-static-x86_64: Process 12582 attached
[pid 12582] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12582] setpgid(0, 0)               = 0
[pid 12582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12582] write(3, "1000", 4)         = 4
[pid 12582] close(3)                    = 0
[pid 12582] memfd_create("syzkaller", 0) = 3
[pid 12582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12582] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12582] munmap(0x7fd990e3c000, 32768) = 0
[pid 12582] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12582] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12582] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12582] close(4)                    = 0
[pid 12582] close(3)                    = 0
[pid 12582] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12582] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12582] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12582] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12582] open("./bus", O_RDONLY)     = 3
[pid 12582] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12582] exit_group(0)               = ?
[pid 12582] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12582, 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 12583 attached
, child_tidptr=0x55555567f5d0) = 12583
[pid 12583] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12583] setpgid(0, 0)               = 0
[pid 12583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12583] write(3, "1000", 4)         = 4
[pid 12583] close(3)                    = 0
[pid 12583] memfd_create("syzkaller", 0) = 3
[pid 12583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12583] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12583] munmap(0x7fd990e3c000, 32768) = 0
[pid 12583] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12583] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12583] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12583] close(4)                    = 0
[pid 12583] close(3)                    = 0
[pid 12583] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12583] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12583] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12583] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12583] open("./bus", O_RDONLY)     = 3
[pid 12583] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12583] exit_group(0)               = ?
[pid 12583] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12583, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12584 attached
, child_tidptr=0x55555567f5d0) = 12584
[pid 12584] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12584] setpgid(0, 0)               = 0
[pid 12584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12584] write(3, "1000", 4)         = 4
[pid 12584] close(3)                    = 0
[pid 12584] memfd_create("syzkaller", 0) = 3
[pid 12584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12584] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12584] munmap(0x7fd990e3c000, 32768) = 0
[pid 12584] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12584] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12584] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12584] close(4)                    = 0
[pid 12584] close(3)                    = 0
[pid 12584] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12584] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12584] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12584] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12584] open("./bus", O_RDONLY)     = 3
[pid 12584] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12584] exit_group(0)               = ?
[pid 12584] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12584, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12585
./strace-static-x86_64: Process 12585 attached
[pid 12585] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12585] setpgid(0, 0)               = 0
[pid 12585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12585] write(3, "1000", 4)         = 4
[pid 12585] close(3)                    = 0
[pid 12585] memfd_create("syzkaller", 0) = 3
[pid 12585] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12585] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12585] munmap(0x7fd990e3c000, 32768) = 0
[pid 12585] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12585] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12585] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12585] close(4)                    = 0
[pid 12585] close(3)                    = 0
[pid 12585] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12585] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12585] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12585] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12585] open("./bus", O_RDONLY)     = 3
[pid 12585] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12585] exit_group(0)               = ?
[pid 12585] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12585, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12586
./strace-static-x86_64: Process 12586 attached
[pid 12586] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12586] setpgid(0, 0)               = 0
[pid 12586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12586] write(3, "1000", 4)         = 4
[pid 12586] close(3)                    = 0
[pid 12586] memfd_create("syzkaller", 0) = 3
[pid 12586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12586] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12586] munmap(0x7fd990e3c000, 32768) = 0
[pid 12586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12586] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12586] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12586] close(4)                    = 0
[pid 12586] close(3)                    = 0
[pid 12586] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12586] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12586] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12586] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12586] open("./bus", O_RDONLY)     = 3
[pid 12586] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12586] exit_group(0)               = ?
[pid 12586] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12586, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12587 attached
, child_tidptr=0x55555567f5d0) = 12587
[pid 12587] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12587] setpgid(0, 0)               = 0
[pid 12587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12587] write(3, "1000", 4)         = 4
[pid 12587] close(3)                    = 0
[pid 12587] memfd_create("syzkaller", 0) = 3
[pid 12587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12587] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12587] munmap(0x7fd990e3c000, 32768) = 0
[pid 12587] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12587] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12587] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12587] close(4)                    = 0
[pid 12587] close(3)                    = 0
[pid 12587] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12587] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12587] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12587] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12587] open("./bus", O_RDONLY)     = 3
[pid 12587] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12587] exit_group(0)               = ?
[pid 12587] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12587, 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=0x55555567f5d0) = 12588
./strace-static-x86_64: Process 12588 attached
[pid 12588] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12588] setpgid(0, 0)               = 0
[pid 12588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12588] write(3, "1000", 4)         = 4
[pid 12588] close(3)                    = 0
[pid 12588] memfd_create("syzkaller", 0) = 3
[pid 12588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12588] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12588] munmap(0x7fd990e3c000, 32768) = 0
[pid 12588] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12588] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12588] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12588] close(4)                    = 0
[pid 12588] close(3)                    = 0
[pid 12588] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12588] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12588] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12588] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12588] open("./bus", O_RDONLY)     = 3
[pid 12588] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12588] exit_group(0)               = ?
[pid 12588] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12588, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12589 attached
, child_tidptr=0x55555567f5d0) = 12589
[pid 12589] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12589] setpgid(0, 0)               = 0
[pid 12589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12589] write(3, "1000", 4)         = 4
[pid 12589] close(3)                    = 0
[pid 12589] memfd_create("syzkaller", 0) = 3
[pid 12589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12589] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12589] munmap(0x7fd990e3c000, 32768) = 0
[pid 12589] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12589] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12589] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12589] close(4)                    = 0
[pid 12589] close(3)                    = 0
[pid 12589] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12589] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12589] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12589] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12589] open("./bus", O_RDONLY)     = 3
[pid 12589] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12589] exit_group(0)               = ?
[pid 12589] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12589, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12590 attached
, child_tidptr=0x55555567f5d0) = 12590
[pid 12590] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12590] setpgid(0, 0)               = 0
[pid 12590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12590] write(3, "1000", 4)         = 4
[pid 12590] close(3)                    = 0
[pid 12590] memfd_create("syzkaller", 0) = 3
[pid 12590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12590] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12590] munmap(0x7fd990e3c000, 32768) = 0
[pid 12590] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12590] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12590] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12590] close(4)                    = 0
[pid 12590] close(3)                    = 0
[pid 12590] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12590] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12590] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12590] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12590] open("./bus", O_RDONLY)     = 3
[pid 12590] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12590] exit_group(0)               = ?
[pid 12590] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12590, 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 12591 attached
, child_tidptr=0x55555567f5d0) = 12591
[pid 12591] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12591] setpgid(0, 0)               = 0
[pid 12591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12591] write(3, "1000", 4)         = 4
[pid 12591] close(3)                    = 0
[pid 12591] memfd_create("syzkaller", 0) = 3
[pid 12591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12591] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12591] munmap(0x7fd990e3c000, 32768) = 0
[pid 12591] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12591] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12591] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12591] close(4)                    = 0
[pid 12591] close(3)                    = 0
[pid 12591] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12591] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12591] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12591] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12591] open("./bus", O_RDONLY)     = 3
[pid 12591] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12591] exit_group(0)               = ?
[pid 12591] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12591, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12592 attached
, child_tidptr=0x55555567f5d0) = 12592
[pid 12592] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12592] setpgid(0, 0)               = 0
[pid 12592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12592] write(3, "1000", 4)         = 4
[pid 12592] close(3)                    = 0
[pid 12592] memfd_create("syzkaller", 0) = 3
[pid 12592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12592] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12592] munmap(0x7fd990e3c000, 32768) = 0
[pid 12592] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12592] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12592] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12592] close(4)                    = 0
[pid 12592] close(3)                    = 0
[pid 12592] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12592] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12592] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12592] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12592] open("./bus", O_RDONLY)     = 3
[pid 12592] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12592] exit_group(0)               = ?
[pid 12592] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12592, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12593 attached
, child_tidptr=0x55555567f5d0) = 12593
[pid 12593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12593] setpgid(0, 0)               = 0
[pid 12593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12593] write(3, "1000", 4)         = 4
[pid 12593] close(3)                    = 0
[pid 12593] memfd_create("syzkaller", 0) = 3
[pid 12593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12593] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12593] munmap(0x7fd990e3c000, 32768) = 0
[pid 12593] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12593] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12593] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12593] close(4)                    = 0
[pid 12593] close(3)                    = 0
[pid 12593] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12593] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12593] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12593] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12593] open("./bus", O_RDONLY)     = 3
[pid 12593] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12593] exit_group(0)               = ?
[pid 12593] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12593, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12594
./strace-static-x86_64: Process 12594 attached
[pid 12594] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12594] setpgid(0, 0)               = 0
[pid 12594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12594] write(3, "1000", 4)         = 4
[pid 12594] close(3)                    = 0
[pid 12594] memfd_create("syzkaller", 0) = 3
[pid 12594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12594] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12594] munmap(0x7fd990e3c000, 32768) = 0
[pid 12594] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12594] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12594] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12594] close(4)                    = 0
[pid 12594] close(3)                    = 0
[pid 12594] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12594] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12594] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12594] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12594] open("./bus", O_RDONLY)     = 3
[pid 12594] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12594] exit_group(0)               = ?
[pid 12594] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12594, 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=0x55555567f5d0) = 12595
./strace-static-x86_64: Process 12595 attached
[pid 12595] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12595] setpgid(0, 0)               = 0
[pid 12595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12595] write(3, "1000", 4)         = 4
[pid 12595] close(3)                    = 0
[pid 12595] memfd_create("syzkaller", 0) = 3
[pid 12595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12595] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12595] munmap(0x7fd990e3c000, 32768) = 0
[pid 12595] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12595] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12595] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12595] close(4)                    = 0
[pid 12595] close(3)                    = 0
[pid 12595] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12595] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12595] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12595] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12595] open("./bus", O_RDONLY)     = 3
[pid 12595] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12595] exit_group(0)               = ?
[pid 12595] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12595, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12596 attached
, child_tidptr=0x55555567f5d0) = 12596
[pid 12596] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12596] setpgid(0, 0)               = 0
[pid 12596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12596] write(3, "1000", 4)         = 4
[pid 12596] close(3)                    = 0
[pid 12596] memfd_create("syzkaller", 0) = 3
[pid 12596] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12596] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12596] munmap(0x7fd990e3c000, 32768) = 0
[pid 12596] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12596] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12596] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12596] close(4)                    = 0
[pid 12596] close(3)                    = 0
[pid 12596] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12596] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12596] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12596] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12596] open("./bus", O_RDONLY)     = 3
[pid 12596] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12596] exit_group(0)               = ?
[pid 12596] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12596, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12597
./strace-static-x86_64: Process 12597 attached
[pid 12597] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12597] setpgid(0, 0)               = 0
[pid 12597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12597] write(3, "1000", 4)         = 4
[pid 12597] close(3)                    = 0
[pid 12597] memfd_create("syzkaller", 0) = 3
[pid 12597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12597] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12597] munmap(0x7fd990e3c000, 32768) = 0
[pid 12597] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12597] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12597] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12597] close(4)                    = 0
[pid 12597] close(3)                    = 0
[pid 12597] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12597] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12597] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12597] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12597] open("./bus", O_RDONLY)     = 3
[pid 12597] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12597] exit_group(0)               = ?
[pid 12597] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12597, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12598 attached
, child_tidptr=0x55555567f5d0) = 12598
[pid 12598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12598] setpgid(0, 0)               = 0
[pid 12598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12598] write(3, "1000", 4)         = 4
[pid 12598] close(3)                    = 0
[pid 12598] memfd_create("syzkaller", 0) = 3
[pid 12598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12598] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12598] munmap(0x7fd990e3c000, 32768) = 0
[pid 12598] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12598] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12598] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12598] close(4)                    = 0
[pid 12598] close(3)                    = 0
[pid 12598] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12598] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12598] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12598] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12598] open("./bus", O_RDONLY)     = 3
[pid 12598] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12598] exit_group(0)               = ?
[pid 12598] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12598, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12599
./strace-static-x86_64: Process 12599 attached
[pid 12599] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12599] setpgid(0, 0)               = 0
[pid 12599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12599] write(3, "1000", 4)         = 4
[pid 12599] close(3)                    = 0
[pid 12599] memfd_create("syzkaller", 0) = 3
[pid 12599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12599] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12599] munmap(0x7fd990e3c000, 32768) = 0
[pid 12599] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12599] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12599] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12599] close(4)                    = 0
[pid 12599] close(3)                    = 0
[pid 12599] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12599] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12599] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12599] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12599] open("./bus", O_RDONLY)     = 3
[pid 12599] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12599] exit_group(0)               = ?
[pid 12599] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12599, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12600
./strace-static-x86_64: Process 12600 attached
[pid 12600] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12600] setpgid(0, 0)               = 0
[pid 12600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12600] write(3, "1000", 4)         = 4
[pid 12600] close(3)                    = 0
[pid 12600] memfd_create("syzkaller", 0) = 3
[pid 12600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12600] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12600] munmap(0x7fd990e3c000, 32768) = 0
[pid 12600] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12600] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12600] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12600] close(4)                    = 0
[pid 12600] close(3)                    = 0
[pid 12600] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12600] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12600] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12600] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12600] open("./bus", O_RDONLY)     = 3
[pid 12600] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12600] exit_group(0)               = ?
[pid 12600] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12600, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12601
./strace-static-x86_64: Process 12601 attached
[pid 12601] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12601] setpgid(0, 0)               = 0
[pid 12601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12601] write(3, "1000", 4)         = 4
[pid 12601] close(3)                    = 0
[pid 12601] memfd_create("syzkaller", 0) = 3
[pid 12601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12601] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12601] munmap(0x7fd990e3c000, 32768) = 0
[pid 12601] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12601] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12601] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12601] close(4)                    = 0
[pid 12601] close(3)                    = 0
[pid 12601] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12601] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12601] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12601] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12601] open("./bus", O_RDONLY)     = 3
[pid 12601] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12601] exit_group(0)               = ?
[pid 12601] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12601, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12602
./strace-static-x86_64: Process 12602 attached
[pid 12602] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12602] setpgid(0, 0)               = 0
[pid 12602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12602] write(3, "1000", 4)         = 4
[pid 12602] close(3)                    = 0
[pid 12602] memfd_create("syzkaller", 0) = 3
[pid 12602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12602] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12602] munmap(0x7fd990e3c000, 32768) = 0
[pid 12602] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12602] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12602] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12602] close(4)                    = 0
[pid 12602] close(3)                    = 0
[pid 12602] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12602] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12602] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12602] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12602] open("./bus", O_RDONLY)     = 3
[pid 12602] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12602] exit_group(0)               = ?
[pid 12602] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12602, 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=0x55555567f5d0) = 12603
./strace-static-x86_64: Process 12603 attached
[pid 12603] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12603] setpgid(0, 0)               = 0
[pid 12603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12603] write(3, "1000", 4)         = 4
[pid 12603] close(3)                    = 0
[pid 12603] memfd_create("syzkaller", 0) = 3
[pid 12603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12603] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12603] munmap(0x7fd990e3c000, 32768) = 0
[pid 12603] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12603] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12603] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12603] close(4)                    = 0
[pid 12603] close(3)                    = 0
[pid 12603] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12603] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12603] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12603] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12603] open("./bus", O_RDONLY)     = 3
[pid 12603] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12603] exit_group(0)               = ?
[pid 12603] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12603, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12604
./strace-static-x86_64: Process 12604 attached
[pid 12604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12604] setpgid(0, 0)               = 0
[pid 12604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12604] write(3, "1000", 4)         = 4
[pid 12604] close(3)                    = 0
[pid 12604] memfd_create("syzkaller", 0) = 3
[pid 12604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12604] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12604] munmap(0x7fd990e3c000, 32768) = 0
[pid 12604] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12604] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12604] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12604] close(4)                    = 0
[pid 12604] close(3)                    = 0
[pid 12604] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12604] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12604] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12604] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12604] open("./bus", O_RDONLY)     = 3
[pid 12604] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12604] exit_group(0)               = ?
[pid 12604] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12604, 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=0x55555567f5d0) = 12605
./strace-static-x86_64: Process 12605 attached
[pid 12605] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12605] setpgid(0, 0)               = 0
[pid 12605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12605] write(3, "1000", 4)         = 4
[pid 12605] close(3)                    = 0
[pid 12605] memfd_create("syzkaller", 0) = 3
[pid 12605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12605] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12605] munmap(0x7fd990e3c000, 32768) = 0
[pid 12605] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12605] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12605] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12605] close(4)                    = 0
[pid 12605] close(3)                    = 0
[pid 12605] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12605] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12605] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12605] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12605] open("./bus", O_RDONLY)     = 3
[pid 12605] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12605] exit_group(0)               = ?
[pid 12605] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12605, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12606 attached
, child_tidptr=0x55555567f5d0) = 12606
[pid 12606] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12606] setpgid(0, 0)               = 0
[pid 12606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12606] write(3, "1000", 4)         = 4
[pid 12606] close(3)                    = 0
[pid 12606] memfd_create("syzkaller", 0) = 3
[pid 12606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12606] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12606] munmap(0x7fd990e3c000, 32768) = 0
[pid 12606] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12606] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12606] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12606] close(4)                    = 0
[pid 12606] close(3)                    = 0
[pid 12606] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12606] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12606] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12606] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12606] open("./bus", O_RDONLY)     = 3
[pid 12606] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12606] exit_group(0)               = ?
[pid 12606] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12606, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12607
./strace-static-x86_64: Process 12607 attached
[pid 12607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12607] setpgid(0, 0)               = 0
[pid 12607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12607] write(3, "1000", 4)         = 4
[pid 12607] close(3)                    = 0
[pid 12607] memfd_create("syzkaller", 0) = 3
[pid 12607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12607] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12607] munmap(0x7fd990e3c000, 32768) = 0
[pid 12607] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12607] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12607] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12607] close(4)                    = 0
[pid 12607] close(3)                    = 0
[pid 12607] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12607] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12607] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12607] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12607] open("./bus", O_RDONLY)     = 3
[pid 12607] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12607] exit_group(0)               = ?
[pid 12607] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12607, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12608 attached
 <unfinished ...>
[pid 12608] prctl(PR_SET_PDEATHSIG, SIGKILL <unfinished ...>
[pid  5005] <... clone resumed>, child_tidptr=0x55555567f5d0) = 12608
[pid 12608] <... prctl resumed>)        = 0
[pid 12608] setpgid(0, 0)               = 0
[pid 12608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12608] write(3, "1000", 4)         = 4
[pid 12608] close(3)                    = 0
[pid 12608] memfd_create("syzkaller", 0) = 3
[pid 12608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12608] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12608] munmap(0x7fd990e3c000, 32768) = 0
[pid 12608] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12608] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12608] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12608] close(4)                    = 0
[pid 12608] close(3)                    = 0
[pid 12608] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12608] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12608] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12608] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12608] open("./bus", O_RDONLY)     = 3
[pid 12608] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12608] exit_group(0)               = ?
[pid 12608] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12608, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12609
./strace-static-x86_64: Process 12609 attached
[pid 12609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12609] setpgid(0, 0)               = 0
[pid 12609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12609] write(3, "1000", 4)         = 4
[pid 12609] close(3)                    = 0
[pid 12609] memfd_create("syzkaller", 0) = 3
[pid 12609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12609] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12609] munmap(0x7fd990e3c000, 32768) = 0
[pid 12609] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12609] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12609] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12609] close(4)                    = 0
[pid 12609] close(3)                    = 0
[pid 12609] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12609] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12609] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12609] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12609] open("./bus", O_RDONLY)     = 3
[pid 12609] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12609] exit_group(0)               = ?
[pid 12609] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12609, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12610
./strace-static-x86_64: Process 12610 attached
[pid 12610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12610] setpgid(0, 0)               = 0
[pid 12610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12610] write(3, "1000", 4)         = 4
[pid 12610] close(3)                    = 0
[pid 12610] memfd_create("syzkaller", 0) = 3
[pid 12610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12610] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12610] munmap(0x7fd990e3c000, 32768) = 0
[pid 12610] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12610] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12610] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12610] close(4)                    = 0
[pid 12610] close(3)                    = 0
[pid 12610] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12610] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12610] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12610] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12610] open("./bus", O_RDONLY)     = 3
[pid 12610] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12610] exit_group(0)               = ?
[pid 12610] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12610, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12611 attached
, child_tidptr=0x55555567f5d0) = 12611
[pid 12611] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12611] setpgid(0, 0)               = 0
[pid 12611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12611] write(3, "1000", 4)         = 4
[pid 12611] close(3)                    = 0
[pid 12611] memfd_create("syzkaller", 0) = 3
[pid 12611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12611] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12611] munmap(0x7fd990e3c000, 32768) = 0
[pid 12611] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12611] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12611] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12611] close(4)                    = 0
[pid 12611] close(3)                    = 0
[pid 12611] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12611] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12611] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12611] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12611] open("./bus", O_RDONLY)     = 3
[pid 12611] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12611] exit_group(0)               = ?
[pid 12611] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12611, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12612
./strace-static-x86_64: Process 12612 attached
[pid 12612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12612] setpgid(0, 0)               = 0
[pid 12612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12612] write(3, "1000", 4)         = 4
[pid 12612] close(3)                    = 0
[pid 12612] memfd_create("syzkaller", 0) = 3
[pid 12612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12612] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12612] munmap(0x7fd990e3c000, 32768) = 0
[pid 12612] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12612] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12612] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12612] close(4)                    = 0
[pid 12612] close(3)                    = 0
[pid 12612] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12612] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12612] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12612] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12612] open("./bus", O_RDONLY)     = 3
[pid 12612] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12612] exit_group(0)               = ?
[pid 12612] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12612, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12613
./strace-static-x86_64: Process 12613 attached
[pid 12613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12613] setpgid(0, 0)               = 0
[pid 12613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12613] write(3, "1000", 4)         = 4
[pid 12613] close(3)                    = 0
[pid 12613] memfd_create("syzkaller", 0) = 3
[pid 12613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12613] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12613] munmap(0x7fd990e3c000, 32768) = 0
[pid 12613] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12613] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12613] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12613] close(4)                    = 0
[pid 12613] close(3)                    = 0
[pid 12613] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12613] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12613] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12613] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12613] open("./bus", O_RDONLY)     = 3
[pid 12613] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12613] exit_group(0)               = ?
[pid 12613] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12613, 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=0x55555567f5d0) = 12614
./strace-static-x86_64: Process 12614 attached
[pid 12614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12614] setpgid(0, 0)               = 0
[pid 12614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12614] write(3, "1000", 4)         = 4
[pid 12614] close(3)                    = 0
[pid 12614] memfd_create("syzkaller", 0) = 3
[pid 12614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12614] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12614] munmap(0x7fd990e3c000, 32768) = 0
[pid 12614] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12614] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12614] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12614] close(4)                    = 0
[pid 12614] close(3)                    = 0
[pid 12614] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12614] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12614] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12614] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12614] open("./bus", O_RDONLY)     = 3
[pid 12614] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12614] exit_group(0)               = ?
[pid 12614] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12614, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12615
./strace-static-x86_64: Process 12615 attached
[pid 12615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12615] setpgid(0, 0)               = 0
[pid 12615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12615] write(3, "1000", 4)         = 4
[pid 12615] close(3)                    = 0
[pid 12615] memfd_create("syzkaller", 0) = 3
[pid 12615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12615] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12615] munmap(0x7fd990e3c000, 32768) = 0
[pid 12615] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12615] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12615] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12615] close(4)                    = 0
[pid 12615] close(3)                    = 0
[pid 12615] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12615] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12615] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12615] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12615] open("./bus", O_RDONLY)     = 3
[pid 12615] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12615] exit_group(0)               = ?
[pid 12615] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12615, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12616
./strace-static-x86_64: Process 12616 attached
[pid 12616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12616] setpgid(0, 0)               = 0
[pid 12616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12616] write(3, "1000", 4)         = 4
[pid 12616] close(3)                    = 0
[pid 12616] memfd_create("syzkaller", 0) = 3
[pid 12616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12616] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12616] munmap(0x7fd990e3c000, 32768) = 0
[pid 12616] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12616] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12616] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12616] close(4)                    = 0
[pid 12616] close(3)                    = 0
[pid 12616] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12616] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12616] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12616] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12616] open("./bus", O_RDONLY)     = 3
[pid 12616] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12616] exit_group(0)               = ?
[pid 12616] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12616, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12617
./strace-static-x86_64: Process 12617 attached
[pid 12617] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12617] setpgid(0, 0)               = 0
[pid 12617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12617] write(3, "1000", 4)         = 4
[pid 12617] close(3)                    = 0
[pid 12617] memfd_create("syzkaller", 0) = 3
[pid 12617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12617] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12617] munmap(0x7fd990e3c000, 32768) = 0
[pid 12617] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12617] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12617] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12617] close(4)                    = 0
[pid 12617] close(3)                    = 0
[pid 12617] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12617] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12617] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12617] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12617] open("./bus", O_RDONLY)     = 3
[pid 12617] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12617] exit_group(0)               = ?
[pid 12617] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12617, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12618
./strace-static-x86_64: Process 12618 attached
[pid 12618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12618] setpgid(0, 0)               = 0
[pid 12618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12618] write(3, "1000", 4)         = 4
[pid 12618] close(3)                    = 0
[pid 12618] memfd_create("syzkaller", 0) = 3
[pid 12618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12618] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12618] munmap(0x7fd990e3c000, 32768) = 0
[pid 12618] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12618] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12618] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12618] close(4)                    = 0
[pid 12618] close(3)                    = 0
[pid 12618] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12618] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12618] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12618] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12618] open("./bus", O_RDONLY)     = 3
[pid 12618] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12618] exit_group(0)               = ?
[pid 12618] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12618, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12619 attached
, child_tidptr=0x55555567f5d0) = 12619
[pid 12619] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12619] setpgid(0, 0)               = 0
[pid 12619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12619] write(3, "1000", 4)         = 4
[pid 12619] close(3)                    = 0
[pid 12619] memfd_create("syzkaller", 0) = 3
[pid 12619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12619] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12619] munmap(0x7fd990e3c000, 32768) = 0
[pid 12619] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12619] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12619] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12619] close(4)                    = 0
[pid 12619] close(3)                    = 0
[pid 12619] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12619] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12619] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12619] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12619] open("./bus", O_RDONLY)     = 3
[pid 12619] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12619] exit_group(0)               = ?
[pid 12619] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12619, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12620
./strace-static-x86_64: Process 12620 attached
[pid 12620] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12620] setpgid(0, 0)               = 0
[pid 12620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12620] write(3, "1000", 4)         = 4
[pid 12620] close(3)                    = 0
[pid 12620] memfd_create("syzkaller", 0) = 3
[pid 12620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12620] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12620] munmap(0x7fd990e3c000, 32768) = 0
[pid 12620] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12620] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12620] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12620] close(4)                    = 0
[pid 12620] close(3)                    = 0
[pid 12620] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12620] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12620] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12620] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12620] open("./bus", O_RDONLY)     = 3
[pid 12620] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12620] exit_group(0)               = ?
[pid 12620] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12620, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12621
./strace-static-x86_64: Process 12621 attached
[pid 12621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12621] setpgid(0, 0)               = 0
[pid 12621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12621] write(3, "1000", 4)         = 4
[pid 12621] close(3)                    = 0
[pid 12621] memfd_create("syzkaller", 0) = 3
[pid 12621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12621] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12621] munmap(0x7fd990e3c000, 32768) = 0
[pid 12621] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12621] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12621] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12621] close(4)                    = 0
[pid 12621] close(3)                    = 0
[pid 12621] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12621] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12621] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12621] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12621] open("./bus", O_RDONLY)     = 3
[pid 12621] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12621] exit_group(0)               = ?
[pid 12621] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12621, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12622
./strace-static-x86_64: Process 12622 attached
[pid 12622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12622] setpgid(0, 0)               = 0
[pid 12622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12622] write(3, "1000", 4)         = 4
[pid 12622] close(3)                    = 0
[pid 12622] memfd_create("syzkaller", 0) = 3
[pid 12622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12622] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12622] munmap(0x7fd990e3c000, 32768) = 0
[pid 12622] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12622] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12622] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12622] close(4)                    = 0
[pid 12622] close(3)                    = 0
[pid 12622] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12622] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12622] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12622] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12622] open("./bus", O_RDONLY)     = 3
[pid 12622] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12622] exit_group(0)               = ?
[pid 12622] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12622, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12623
./strace-static-x86_64: Process 12623 attached
[pid 12623] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12623] setpgid(0, 0)               = 0
[pid 12623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12623] write(3, "1000", 4)         = 4
[pid 12623] close(3)                    = 0
[pid 12623] memfd_create("syzkaller", 0) = 3
[pid 12623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12623] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12623] munmap(0x7fd990e3c000, 32768) = 0
[pid 12623] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12623] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12623] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12623] close(4)                    = 0
[pid 12623] close(3)                    = 0
[pid 12623] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12623] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12623] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12623] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12623] open("./bus", O_RDONLY)     = 3
[pid 12623] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12623] exit_group(0)               = ?
[pid 12623] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12623, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12624 attached
, child_tidptr=0x55555567f5d0) = 12624
[pid 12624] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12624] setpgid(0, 0)               = 0
[pid 12624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12624] write(3, "1000", 4)         = 4
[pid 12624] close(3)                    = 0
[pid 12624] memfd_create("syzkaller", 0) = 3
[pid 12624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12624] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12624] munmap(0x7fd990e3c000, 32768) = 0
[pid 12624] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12624] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12624] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12624] close(4)                    = 0
[pid 12624] close(3)                    = 0
[pid 12624] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12624] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12624] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12624] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12624] open("./bus", O_RDONLY)     = 3
[pid 12624] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12624] exit_group(0)               = ?
[pid 12624] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12624, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12625 attached
, child_tidptr=0x55555567f5d0) = 12625
[pid 12625] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12625] setpgid(0, 0)               = 0
[pid 12625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12625] write(3, "1000", 4)         = 4
[pid 12625] close(3)                    = 0
[pid 12625] memfd_create("syzkaller", 0) = 3
[pid 12625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12625] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12625] munmap(0x7fd990e3c000, 32768) = 0
[pid 12625] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12625] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12625] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12625] close(4)                    = 0
[pid 12625] close(3)                    = 0
[pid 12625] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12625] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12625] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12625] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12625] open("./bus", O_RDONLY)     = 3
[pid 12625] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12625] exit_group(0)               = ?
[pid 12625] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12625, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12626
./strace-static-x86_64: Process 12626 attached
[pid 12626] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12626] setpgid(0, 0)               = 0
[pid 12626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12626] write(3, "1000", 4)         = 4
[pid 12626] close(3)                    = 0
[pid 12626] memfd_create("syzkaller", 0) = 3
[pid 12626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12626] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12626] munmap(0x7fd990e3c000, 32768) = 0
[pid 12626] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12626] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12626] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12626] close(4)                    = 0
[pid 12626] close(3)                    = 0
[pid 12626] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12626] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12626] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12626] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12626] open("./bus", O_RDONLY)     = 3
[pid 12626] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12626] exit_group(0)               = ?
[pid 12626] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12626, 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 12627 attached
, child_tidptr=0x55555567f5d0) = 12627
[pid 12627] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12627] setpgid(0, 0)               = 0
[pid 12627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12627] write(3, "1000", 4)         = 4
[pid 12627] close(3)                    = 0
[pid 12627] memfd_create("syzkaller", 0) = 3
[pid 12627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12627] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12627] munmap(0x7fd990e3c000, 32768) = 0
[pid 12627] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12627] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12627] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12627] close(4)                    = 0
[pid 12627] close(3)                    = 0
[pid 12627] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12627] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12627] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12627] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12627] open("./bus", O_RDONLY)     = 3
[pid 12627] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12627] exit_group(0)               = ?
[pid 12627] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12627, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12628
./strace-static-x86_64: Process 12628 attached
[pid 12628] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12628] setpgid(0, 0)               = 0
[pid 12628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12628] write(3, "1000", 4)         = 4
[pid 12628] close(3)                    = 0
[pid 12628] memfd_create("syzkaller", 0) = 3
[pid 12628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12628] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12628] munmap(0x7fd990e3c000, 32768) = 0
[pid 12628] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12628] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12628] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12628] close(4)                    = 0
[pid 12628] close(3)                    = 0
[pid 12628] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12628] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12628] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12628] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12628] open("./bus", O_RDONLY)     = 3
[pid 12628] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12628] exit_group(0)               = ?
[pid 12628] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12628, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12629
./strace-static-x86_64: Process 12629 attached
[pid 12629] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12629] setpgid(0, 0)               = 0
[pid 12629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12629] write(3, "1000", 4)         = 4
[pid 12629] close(3)                    = 0
[pid 12629] memfd_create("syzkaller", 0) = 3
[pid 12629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12629] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12629] munmap(0x7fd990e3c000, 32768) = 0
[pid 12629] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12629] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12629] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12629] close(4)                    = 0
[pid 12629] close(3)                    = 0
[pid 12629] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12629] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12629] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12629] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12629] open("./bus", O_RDONLY)     = 3
[pid 12629] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12629] exit_group(0)               = ?
[pid 12629] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12629, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12630
./strace-static-x86_64: Process 12630 attached
[pid 12630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12630] setpgid(0, 0)               = 0
[pid 12630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12630] write(3, "1000", 4)         = 4
[pid 12630] close(3)                    = 0
[pid 12630] memfd_create("syzkaller", 0) = 3
[pid 12630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12630] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12630] munmap(0x7fd990e3c000, 32768) = 0
[pid 12630] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12630] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12630] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12630] close(4)                    = 0
[pid 12630] close(3)                    = 0
[pid 12630] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12630] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12630] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12630] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12630] open("./bus", O_RDONLY)     = 3
[pid 12630] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12630] exit_group(0)               = ?
[pid 12630] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12630, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12631
./strace-static-x86_64: Process 12631 attached
[pid 12631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12631] setpgid(0, 0)               = 0
[pid 12631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12631] write(3, "1000", 4)         = 4
[pid 12631] close(3)                    = 0
[pid 12631] memfd_create("syzkaller", 0) = 3
[pid 12631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12631] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12631] munmap(0x7fd990e3c000, 32768) = 0
[pid 12631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12631] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12631] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12631] close(4)                    = 0
[pid 12631] close(3)                    = 0
[pid 12631] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12631] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12631] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12631] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12631] open("./bus", O_RDONLY)     = 3
[pid 12631] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12631] exit_group(0)               = ?
[pid 12631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12631, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12632
./strace-static-x86_64: Process 12632 attached
[pid 12632] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12632] setpgid(0, 0)               = 0
[pid 12632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12632] write(3, "1000", 4)         = 4
[pid 12632] close(3)                    = 0
[pid 12632] memfd_create("syzkaller", 0) = 3
[pid 12632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12632] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12632] munmap(0x7fd990e3c000, 32768) = 0
[pid 12632] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12632] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12632] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12632] close(4)                    = 0
[pid 12632] close(3)                    = 0
[pid 12632] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12632] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12632] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12632] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12632] open("./bus", O_RDONLY)     = 3
[pid 12632] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12632] exit_group(0)               = ?
[pid 12632] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12632, 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=0x55555567f5d0) = 12633
./strace-static-x86_64: Process 12633 attached
[pid 12633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12633] setpgid(0, 0)               = 0
[pid 12633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12633] write(3, "1000", 4)         = 4
[pid 12633] close(3)                    = 0
[pid 12633] memfd_create("syzkaller", 0) = 3
[pid 12633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12633] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12633] munmap(0x7fd990e3c000, 32768) = 0
[pid 12633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12633] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12633] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12633] close(4)                    = 0
[pid 12633] close(3)                    = 0
[pid 12633] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12633] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12633] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12633] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12633] open("./bus", O_RDONLY)     = 3
[pid 12633] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12633] exit_group(0)               = ?
[pid 12633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12633, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12634 attached
, child_tidptr=0x55555567f5d0) = 12634
[pid 12634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12634] setpgid(0, 0)               = 0
[pid 12634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12634] write(3, "1000", 4)         = 4
[pid 12634] close(3)                    = 0
[pid 12634] memfd_create("syzkaller", 0) = 3
[pid 12634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12634] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12634] munmap(0x7fd990e3c000, 32768) = 0
[pid 12634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12634] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12634] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12634] close(4)                    = 0
[pid 12634] close(3)                    = 0
[pid 12634] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12634] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12634] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12634] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12634] open("./bus", O_RDONLY)     = 3
[pid 12634] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12634] exit_group(0)               = ?
[pid 12634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12634, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12635 attached
, child_tidptr=0x55555567f5d0) = 12635
[pid 12635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12635] setpgid(0, 0)               = 0
[pid 12635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12635] write(3, "1000", 4)         = 4
[pid 12635] close(3)                    = 0
[pid 12635] memfd_create("syzkaller", 0) = 3
[pid 12635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12635] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12635] munmap(0x7fd990e3c000, 32768) = 0
[pid 12635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12635] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12635] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12635] close(4)                    = 0
[pid 12635] close(3)                    = 0
[pid 12635] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12635] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12635] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12635] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12635] open("./bus", O_RDONLY)     = 3
[pid 12635] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12635] exit_group(0)               = ?
[pid 12635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12635, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12636
./strace-static-x86_64: Process 12636 attached
[pid 12636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12636] setpgid(0, 0)               = 0
[pid 12636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12636] write(3, "1000", 4)         = 4
[pid 12636] close(3)                    = 0
[pid 12636] memfd_create("syzkaller", 0) = 3
[pid 12636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12636] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12636] munmap(0x7fd990e3c000, 32768) = 0
[pid 12636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12636] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12636] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12636] close(4)                    = 0
[pid 12636] close(3)                    = 0
[pid 12636] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12636] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12636] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12636] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12636] open("./bus", O_RDONLY)     = 3
[pid 12636] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12636] exit_group(0)               = ?
[pid 12636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12636, 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=0x55555567f5d0) = 12637
./strace-static-x86_64: Process 12637 attached
[pid 12637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12637] setpgid(0, 0)               = 0
[pid 12637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12637] write(3, "1000", 4)         = 4
[pid 12637] close(3)                    = 0
[pid 12637] memfd_create("syzkaller", 0) = 3
[pid 12637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12637] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12637] munmap(0x7fd990e3c000, 32768) = 0
[pid 12637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12637] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12637] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12637] close(4)                    = 0
[pid 12637] close(3)                    = 0
[pid 12637] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12637] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12637] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12637] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12637] open("./bus", O_RDONLY)     = 3
[pid 12637] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12637] exit_group(0)               = ?
[pid 12637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12637, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12638
./strace-static-x86_64: Process 12638 attached
[pid 12638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12638] setpgid(0, 0)               = 0
[pid 12638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12638] write(3, "1000", 4)         = 4
[pid 12638] close(3)                    = 0
[pid 12638] memfd_create("syzkaller", 0) = 3
[pid 12638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12638] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12638] munmap(0x7fd990e3c000, 32768) = 0
[pid 12638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12638] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12638] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12638] close(4)                    = 0
[pid 12638] close(3)                    = 0
[pid 12638] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12638] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12638] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12638] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12638] open("./bus", O_RDONLY)     = 3
[pid 12638] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12638] exit_group(0)               = ?
[pid 12638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12638, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12639 attached
, child_tidptr=0x55555567f5d0) = 12639
[pid 12639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12639] setpgid(0, 0)               = 0
[pid 12639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12639] write(3, "1000", 4)         = 4
[pid 12639] close(3)                    = 0
[pid 12639] memfd_create("syzkaller", 0) = 3
[pid 12639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12639] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12639] munmap(0x7fd990e3c000, 32768) = 0
[pid 12639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12639] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12639] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12639] close(4)                    = 0
[pid 12639] close(3)                    = 0
[pid 12639] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12639] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12639] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12639] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12639] open("./bus", O_RDONLY)     = 3
[pid 12639] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12639] exit_group(0)               = ?
[pid 12639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12639, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12640
./strace-static-x86_64: Process 12640 attached
[pid 12640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12640] setpgid(0, 0)               = 0
[pid 12640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12640] write(3, "1000", 4)         = 4
[pid 12640] close(3)                    = 0
[pid 12640] memfd_create("syzkaller", 0) = 3
[pid 12640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12640] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12640] munmap(0x7fd990e3c000, 32768) = 0
[pid 12640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12640] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12640] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12640] close(4)                    = 0
[pid 12640] close(3)                    = 0
[pid 12640] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12640] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12640] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12640] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12640] open("./bus", O_RDONLY)     = 3
[pid 12640] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12640] exit_group(0)               = ?
[pid 12640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12640, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12641
./strace-static-x86_64: Process 12641 attached
[pid 12641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12641] setpgid(0, 0)               = 0
[pid 12641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12641] write(3, "1000", 4)         = 4
[pid 12641] close(3)                    = 0
[pid 12641] memfd_create("syzkaller", 0) = 3
[pid 12641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12641] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12641] munmap(0x7fd990e3c000, 32768) = 0
[pid 12641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12641] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12641] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12641] close(4)                    = 0
[pid 12641] close(3)                    = 0
[pid 12641] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12641] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12641] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12641] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12641] open("./bus", O_RDONLY)     = 3
[pid 12641] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12641] exit_group(0)               = ?
[pid 12641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12641, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12642
./strace-static-x86_64: Process 12642 attached
[pid 12642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12642] setpgid(0, 0)               = 0
[pid 12642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12642] write(3, "1000", 4)         = 4
[pid 12642] close(3)                    = 0
[pid 12642] memfd_create("syzkaller", 0) = 3
[pid 12642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12642] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12642] munmap(0x7fd990e3c000, 32768) = 0
[pid 12642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12642] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12642] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12642] close(4)                    = 0
[pid 12642] close(3)                    = 0
[pid 12642] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12642] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12642] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12642] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12642] open("./bus", O_RDONLY)     = 3
[pid 12642] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12642] exit_group(0)               = ?
[pid 12642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12642, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12643 attached
, child_tidptr=0x55555567f5d0) = 12643
[pid 12643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12643] setpgid(0, 0)               = 0
[pid 12643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12643] write(3, "1000", 4)         = 4
[pid 12643] close(3)                    = 0
[pid 12643] memfd_create("syzkaller", 0) = 3
[pid 12643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12643] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12643] munmap(0x7fd990e3c000, 32768) = 0
[pid 12643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12643] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12643] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12643] close(4)                    = 0
[pid 12643] close(3)                    = 0
[pid 12643] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12643] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12643] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12643] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12643] open("./bus", O_RDONLY)     = 3
[pid 12643] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12643] exit_group(0)               = ?
[pid 12643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12643, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12644
./strace-static-x86_64: Process 12644 attached
[pid 12644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12644] setpgid(0, 0)               = 0
[pid 12644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12644] write(3, "1000", 4)         = 4
[pid 12644] close(3)                    = 0
[pid 12644] memfd_create("syzkaller", 0) = 3
[pid 12644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12644] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12644] munmap(0x7fd990e3c000, 32768) = 0
[pid 12644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12644] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12644] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12644] close(4)                    = 0
[pid 12644] close(3)                    = 0
[pid 12644] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12644] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12644] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12644] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12644] open("./bus", O_RDONLY)     = 3
[pid 12644] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12644] exit_group(0)               = ?
[pid 12644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12644, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12645
./strace-static-x86_64: Process 12645 attached
[pid 12645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12645] setpgid(0, 0)               = 0
[pid 12645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12645] write(3, "1000", 4)         = 4
[pid 12645] close(3)                    = 0
[pid 12645] memfd_create("syzkaller", 0) = 3
[pid 12645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12645] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12645] munmap(0x7fd990e3c000, 32768) = 0
[pid 12645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12645] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12645] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12645] close(4)                    = 0
[pid 12645] close(3)                    = 0
[pid 12645] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12645] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12645] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12645] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12645] open("./bus", O_RDONLY)     = 3
[pid 12645] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12645] exit_group(0)               = ?
[pid 12645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12645, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12646
./strace-static-x86_64: Process 12646 attached
[pid 12646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12646] setpgid(0, 0)               = 0
[pid 12646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12646] write(3, "1000", 4)         = 4
[pid 12646] close(3)                    = 0
[pid 12646] memfd_create("syzkaller", 0) = 3
[pid 12646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12646] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12646] munmap(0x7fd990e3c000, 32768) = 0
[pid 12646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12646] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12646] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12646] close(4)                    = 0
[pid 12646] close(3)                    = 0
[pid 12646] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12646] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12646] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12646] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12646] open("./bus", O_RDONLY)     = 3
[pid 12646] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12646] exit_group(0)               = ?
[pid 12646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12646, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12647 attached
, child_tidptr=0x55555567f5d0) = 12647
[pid 12647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12647] setpgid(0, 0)               = 0
[pid 12647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12647] write(3, "1000", 4)         = 4
[pid 12647] close(3)                    = 0
[pid 12647] memfd_create("syzkaller", 0) = 3
[pid 12647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12647] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12647] munmap(0x7fd990e3c000, 32768) = 0
[pid 12647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12647] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12647] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12647] close(4)                    = 0
[pid 12647] close(3)                    = 0
[pid 12647] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12647] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12647] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12647] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12647] open("./bus", O_RDONLY)     = 3
[pid 12647] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12647] exit_group(0)               = ?
[pid 12647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12647, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 12648 attached
, child_tidptr=0x55555567f5d0) = 12648
[pid 12648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12648] setpgid(0, 0)               = 0
[pid 12648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12648] write(3, "1000", 4)         = 4
[pid 12648] close(3)                    = 0
[pid 12648] memfd_create("syzkaller", 0) = 3
[pid 12648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12648] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12648] munmap(0x7fd990e3c000, 32768) = 0
[pid 12648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12648] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12648] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12648] close(4)                    = 0
[pid 12648] close(3)                    = 0
[pid 12648] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12648] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12648] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12648] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12648] open("./bus", O_RDONLY)     = 3
[pid 12648] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12648] exit_group(0)               = ?
[pid 12648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12648, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12649
./strace-static-x86_64: Process 12649 attached
[pid 12649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12649] setpgid(0, 0)               = 0
[pid 12649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12649] write(3, "1000", 4)         = 4
[pid 12649] close(3)                    = 0
[pid 12649] memfd_create("syzkaller", 0) = 3
[pid 12649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12649] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12649] munmap(0x7fd990e3c000, 32768) = 0
[pid 12649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12649] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12649] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12649] close(4)                    = 0
[pid 12649] close(3)                    = 0
[pid 12649] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12649] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12649] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12649] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12649] open("./bus", O_RDONLY)     = 3
[pid 12649] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12649] exit_group(0)               = ?
[pid 12649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12649, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12650
./strace-static-x86_64: Process 12650 attached
[pid 12650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12650] setpgid(0, 0)               = 0
[pid 12650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12650] write(3, "1000", 4)         = 4
[pid 12650] close(3)                    = 0
[pid 12650] memfd_create("syzkaller", 0) = 3
[pid 12650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12650] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12650] munmap(0x7fd990e3c000, 32768) = 0
[pid 12650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12650] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12650] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12650] close(4)                    = 0
[pid 12650] close(3)                    = 0
[pid 12650] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12650] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12650] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12650] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12650] open("./bus", O_RDONLY)     = 3
[pid 12650] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12650] exit_group(0)               = ?
[pid 12650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12650, si_uid=0, si_status=0, si_utime=0, si_stime=1 /* 0.01 s */} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12651
./strace-static-x86_64: Process 12651 attached
[pid 12651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12651] setpgid(0, 0)               = 0
[pid 12651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12651] write(3, "1000", 4)         = 4
[pid 12651] close(3)                    = 0
[pid 12651] memfd_create("syzkaller", 0) = 3
[pid 12651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12651] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12651] munmap(0x7fd990e3c000, 32768) = 0
[pid 12651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12651] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12651] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12651] close(4)                    = 0
[pid 12651] close(3)                    = 0
[pid 12651] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12651] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12651] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12651] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12651] open("./bus", O_RDONLY)     = 3
[pid 12651] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12651] exit_group(0)               = ?
[pid 12651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12651, 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=0x55555567f5d0) = 12652
./strace-static-x86_64: Process 12652 attached
[pid 12652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12652] setpgid(0, 0)               = 0
[pid 12652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12652] write(3, "1000", 4)         = 4
[pid 12652] close(3)                    = 0
[pid 12652] memfd_create("syzkaller", 0) = 3
[pid 12652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12652] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12652] munmap(0x7fd990e3c000, 32768) = 0
[pid 12652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12652] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12652] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12652] close(4)                    = 0
[pid 12652] close(3)                    = 0
[pid 12652] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12652] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12652] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12652] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12652] open("./bus", O_RDONLY)     = 3
[pid 12652] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12652] exit_group(0)               = ?
[pid 12652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12652, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12653
./strace-static-x86_64: Process 12653 attached
[pid 12653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12653] setpgid(0, 0)               = 0
[pid 12653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12653] write(3, "1000", 4)         = 4
[pid 12653] close(3)                    = 0
[pid 12653] memfd_create("syzkaller", 0) = 3
[pid 12653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12653] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12653] munmap(0x7fd990e3c000, 32768) = 0
[pid 12653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12653] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12653] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12653] close(4)                    = 0
[pid 12653] close(3)                    = 0
[pid 12653] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12653] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12653] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12653] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12653] open("./bus", O_RDONLY)     = 3
[pid 12653] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12653] exit_group(0)               = ?
[pid 12653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12653, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12654
./strace-static-x86_64: Process 12654 attached
[pid 12654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12654] setpgid(0, 0)               = 0
[pid 12654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12654] write(3, "1000", 4)         = 4
[pid 12654] close(3)                    = 0
[pid 12654] memfd_create("syzkaller", 0) = 3
[pid 12654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12654] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12654] munmap(0x7fd990e3c000, 32768) = 0
[pid 12654] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12654] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12654] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12654] close(4)                    = 0
[pid 12654] close(3)                    = 0
[pid 12654] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12654] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12654] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12654] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12654] open("./bus", O_RDONLY)     = 3
[pid 12654] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12654] exit_group(0)               = ?
[pid 12654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12654, 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=0x55555567f5d0) = 12655
./strace-static-x86_64: Process 12655 attached
[pid 12655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12655] setpgid(0, 0)               = 0
[pid 12655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12655] write(3, "1000", 4)         = 4
[pid 12655] close(3)                    = 0
[pid 12655] memfd_create("syzkaller", 0) = 3
[pid 12655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12655] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12655] munmap(0x7fd990e3c000, 32768) = 0
[pid 12655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12655] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12655] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12655] close(4)                    = 0
[pid 12655] close(3)                    = 0
[pid 12655] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12655] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12655] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12655] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12655] open("./bus", O_RDONLY)     = 3
[pid 12655] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12655] exit_group(0)               = ?
[pid 12655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12655, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12656
./strace-static-x86_64: Process 12656 attached
[pid 12656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12656] setpgid(0, 0)               = 0
[pid 12656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12656] write(3, "1000", 4)         = 4
[pid 12656] close(3)                    = 0
[pid 12656] memfd_create("syzkaller", 0) = 3
[pid 12656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12656] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12656] munmap(0x7fd990e3c000, 32768) = 0
[pid 12656] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12656] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12656] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12656] close(4)                    = 0
[pid 12656] close(3)                    = 0
[pid 12656] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[pid 12656] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12656] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12656] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12656] open("./bus", O_RDONLY)     = 3
[pid 12656] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12656] exit_group(0)               = ?
[pid 12656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12656, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12657
./strace-static-x86_64: Process 12657 attached
[pid 12657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12657] setpgid(0, 0)               = 0
[pid 12657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12657] write(3, "1000", 4)         = 4
[pid 12657] close(3)                    = 0
[pid 12657] memfd_create("syzkaller", 0) = 3
[pid 12657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12657] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12657] munmap(0x7fd990e3c000, 32768) = 0
[pid 12657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12657] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12657] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12657] close(4)                    = 0
[pid 12657] close(3)                    = 0
[pid 12657] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  286.626560][   T28] INFO: task kworker/0:0:7 blocked for more than 143 seconds.
[  286.634266][   T28]       Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
[  286.642581][   T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[  286.651673][   T28] task:kworker/0:0     state:D stack:27176 pid:7     ppid:2      flags:0x00004000
[  286.661035][   T28] Workqueue: events_long flush_mdb
[  286.666386][   T28] Call Trace:
[  286.669700][   T28]  <TASK>
[  286.672691][   T28]  __schedule+0x1d15/0x5790
[  286.677418][   T28]  ? print_usage_bug.part.0+0x660/0x660
[  286.683079][   T28]  ? find_held_lock+0x2d/0x110
[  286.688156][   T28]  ? io_schedule_timeout+0x150/0x150
[  286.693494][   T28]  ? lock_downgrade+0x690/0x690
[  286.698455][   T28]  ? _raw_spin_unlock_irq+0x23/0x50
[  286.703728][   T28]  ? lockdep_hardirqs_on+0x7d/0x100
[  286.709091][   T28]  schedule+0xde/0x1a0
[  286.713223][   T28]  io_schedule+0xbe/0x130
[  286.717743][   T28]  bit_wait_io+0x16/0xe0
[  286.722060][   T28]  __wait_on_bit_lock+0x11f/0x1a0
[  286.727218][   T28]  ? bit_wait+0xe0/0xe0
[  286.731429][   T28]  out_of_line_wait_on_bit_lock+0xd9/0x110
[  286.737326][   T28]  ? __wait_on_bit_lock+0x1a0/0x1a0
[  286.742591][   T28]  ? cpuacct_css_alloc+0x160/0x160
[  286.747863][   T28]  __lock_buffer+0x66/0x70
[  286.752367][   T28]  hfs_mdb_commit+0x999/0x1280
[  286.757252][   T28]  process_one_work+0x99a/0x15e0
[  286.762281][   T28]  ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[  286.767778][   T28]  ? rcu_is_watching+0x12/0xb0
[  286.772636][   T28]  ? spin_bug+0x1c0/0x1c0
[pid 12657] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12657] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12657] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12657] open("./bus", O_RDONLY)     = 3
[pid 12657] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12657] exit_group(0)               = ?
[pid 12657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12657, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
[  286.777104][   T28]  ? lock_acquire+0x32/0xc0
[  286.781680][   T28]  ? worker_thread+0x16d/0x10c0
[  286.786675][   T28]  worker_thread+0x67d/0x10c0
[  286.791439][   T28]  ? process_one_work+0x15e0/0x15e0
[  286.796762][   T28]  kthread+0x344/0x440
[  286.800899][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  286.806689][   T28]  ret_from_fork+0x1f/0x30
[  286.811220][   T28]  </TASK>
[  286.814407][   T28] 
[  286.814407][   T28] Showing all locks held in the system:
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12658
./strace-static-x86_64: Process 12658 attached
[pid 12658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 12658] setpgid(0, 0)               = 0
[pid 12658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12658] write(3, "1000", 4)         = 4
[pid 12658] close(3)                    = 0
[pid 12658] memfd_create("syzkaller", 0) = 3
[pid 12658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12658] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12658] munmap(0x7fd990e3c000, 32768) = 0
[pid 12658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12658] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12658] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12658] close(4)                    = 0
[pid 12658] close(3)                    = 0
[pid 12658] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  286.823431][   T28] 2 locks held by kworker/0:0/7:
[  286.829239][   T28]  #0: ffff888012471538 ((wq_completion)events_long){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0
[  286.841079][   T28]  #1: ffffc900000c7db0 ((work_completion)(&(&sbi->mdb_work)->work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0
[  286.854293][   T28] 1 lock held by rcu_tasks_kthre/13:
[  286.860256][   T28]  #0: ffffffff8c7985b0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80
[  286.871351][   T28] 1 lock held by rcu_tasks_trace/14:
[  286.876716][   T28]  #0: ffffffff8c7982b0 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80
[  286.887873][   T28] 1 lock held by khungtaskd/28:
[  286.892764][   T28]  #0: ffffffff8c7991c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x390
[  286.902935][   T28] 2 locks held by kworker/1:2/1763:
[  286.908259][   T28]  #0: ffff888012472538 ((wq_completion)rcu_gp){+.+.}-{0:0}, at: process_one_work+0x883/0x15e0
[  286.918808][   T28]  #1: ffffc900071d7db0 ((work_completion)(&rew->rew_work)){+.+.}-{0:0}, at: process_one_work+0x8b7/0x15e0
[  286.930404][   T28] 2 locks held by getty/4761:
[  286.935112][   T28]  #0: ffff88802cd8a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80
[  286.945038][   T28]  #1: ffffc900015802f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0
[  286.955292][   T28] 2 locks held by syz-executor387/12658:
[  286.961027][   T28]  #0: ffff88807bf70fa8 (&type->i_mutex_dir_key#6){+.+.}-{3:3}, at: lock_mount+0x8a/0x2e0
[pid 12658] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL) = -1 ENOTDIR (Not a directory)
[pid 12658] creat("./bus", 000)         = -1 EISDIR (Is a directory)
[pid 12658] lseek(-1, 512, SEEK_SET)    = -1 EBADF (Bad file descriptor)
[pid 12658] open("./bus", O_RDONLY)     = 3
[pid 12658] sendfile(-1, 3, NULL, 130817) = -1 EBADF (Bad file descriptor)
[pid 12658] exit_group(0)               = ?
[pid 12658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12658, si_uid=0, si_status=0, si_utime=0, si_stime=0} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR)  = 3
ioctl(3, LOOP_CLR_FD)                   = 0
close(3)                                = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555567f5d0) = 12659
[  286.971123][   T28]  #1: ffffffff8c7a45b8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x64a/0x770
[  286.982620][   T28] 
[  286.985347][   T28] =============================================
[  286.985347][   T28] 
[  286.994777][   T28] NMI backtrace for cpu 0
[  286.999155][   T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
[  287.008470][   T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[  287.018542][   T28] Call Trace:
[  287.021839][   T28]  <TASK>
./strace-static-x86_64: Process 12659 attached
[pid 12659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[  287.024788][   T28]  dump_stack_lvl+0xd9/0x150
[  287.029528][   T28]  nmi_cpu_backtrace+0x29c/0x350
[  287.034510][   T28]  ? lapic_can_unplug_cpu+0xa0/0xa0
[  287.039825][   T28]  nmi_trigger_cpumask_backtrace+0x2a4/0x300
[  287.045857][   T28]  watchdog+0xe16/0x1090
[  287.050155][   T28]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  287.056178][   T28]  kthread+0x344/0x440
[  287.060280][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  287.065951][   T28]  ret_from_fork+0x1f/0x30
[  287.070420][   T28]  </TASK>
[  287.073621][   T28] Sending NMI from CPU 0 to CPUs 1:
[pid 12659] setpgid(0, 0)               = 0
[pid 12659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 12659] write(3, "1000", 4)         = 4
[pid 12659] close(3)                    = 0
[pid 12659] memfd_create("syzkaller", 0) = 3
[pid 12659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd990e3c000
[pid 12659] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32768) = 32768
[pid 12659] munmap(0x7fd990e3c000, 32768) = 0
[pid 12659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 12659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12659] ioctl(4, LOOP_CLR_FD)       = 0
[pid 12659] ioctl(4, LOOP_SET_FD, 3)    = -1 EBUSY (Device or resource busy)
[pid 12659] close(4)                    = 0
[pid 12659] close(3)                    = 0
[pid 12659] open("./bus", O_RDWR|O_CREAT|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_LARGEFILE|O_NOATIME, 000) = -1 EISDIR (Is a directory)
[  287.078914][    C1] NMI backtrace for cpu 1
[  287.078925][    C1] CPU: 1 PID: 12659 Comm: syz-executor387 Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
[  287.078952][    C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[  287.078966][    C1] RIP: 0010:mtree_range_walk+0x49d/0x940
[  287.079005][    C1] Code: ff df 48 8d b8 f8 00 00 00 48 89 f8 48 c1 e8 03 0f b6 04 30 84 c0 74 06 0f 8e 53 03 00 00 48 8b 04 24 44 0f b6 a8 f8 00 00 00 <e9> 82 fc ff ff e8 09 6b 85 f7 41 0f b6 c4 48 b9 00 00 00 00 00 fc
[  287.079028][    C1] RSP: 0018:ffffc9000ef77be0 EFLAGS: 00000246
[  287.079047][    C1] RAX: ffff88807665d000 RBX: 000000000000000f RCX: 0000000000000000
[  287.079063][    C1] RDX: ffff888070be1dc0 RSI: dffffc0000000000 RDI: ffff88807665d0f8
[  287.079079][    C1] RBP: ffff88807665d008 R08: 0000000000000007 R09: 0000000000000000
[  287.079094][    C1] R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
[  287.079109][    C1] R13: 0000000000000009 R14: 0000000000000000 R15: 00007fd9992f5fff
[  287.079124][    C1] FS:  000055555567f300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
[  287.079149][    C1] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  287.079165][    C1] CR2: 000055555567f5d0 CR3: 0000000024506000 CR4: 00000000003506e0
[  287.079181][    C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[  287.079195][    C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[  287.079210][    C1] Call Trace:
[  287.079215][    C1]  <TASK>
[  287.079231][    C1]  mt_find+0x50a/0x920
[  287.079268][    C1]  ? mas_next_range+0x260/0x260
[  287.079313][    C1]  find_vma+0x10c/0x1b0
[  287.079379][    C1]  ? vma_link+0x290/0x290
[  287.079418][    C1]  do_user_addr_fault+0x493/0x1210
[  287.079458][    C1]  exc_page_fault+0x98/0x170
[  287.079488][    C1]  asm_exc_page_fault+0x26/0x30
[  287.079591][    C1] RIP: 0010:__put_user_4+0x11/0x20
[  287.079620][    C1] Code: fa 0f 01 cb 66 89 01 31 c9 0f 01 ca c3 66 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <89> 01 31 c9 0f 01 ca c3 0f 1f 80 00 00 00 00 f3 0f 1e fa f3 0f 1e
[  287.079642][    C1] RSP: 0018:ffffc9000ef77f38 EFLAGS: 00050202
[  287.079660][    C1] RAX: 0000000000003173 RBX: 0000000000000000 RCX: 000055555567f5d0
[  287.079675][    C1] RDX: dffffc0000000000 RSI: 0000000000000000 RDI: ffff888070be2438
[  287.079691][    C1] RBP: 0000000000000000 R08: 0000000000000001 R09: ffffffff8e7af397
[  287.079705][    C1] R10: fffffbfff1cf5e72 R11: 0000000000000001 R12: 0000000000000000
[  287.079721][    C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
[  287.079745][    C1]  schedule_tail+0xa8/0xe0
[  287.079781][    C1]  ret_from_fork+0x8/0x30
[  287.079824][    C1]  </TASK>
[  287.080160][   T28] Kernel panic - not syncing: hung_task: blocked tasks
[  287.344024][   T28] CPU: 0 PID: 28 Comm: khungtaskd Not tainted 6.4.0-rc1-next-20230512-syzkaller #0
[  287.353329][   T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
[  287.363426][   T28] Call Trace:
[  287.366722][   T28]  <TASK>
[  287.369669][   T28]  dump_stack_lvl+0xd9/0x150
[  287.374307][   T28]  panic+0x686/0x730
[  287.378240][   T28]  ? panic_smp_self_stop+0xa0/0xa0
[  287.383402][   T28]  ? lapic_can_unplug_cpu+0xa0/0xa0
[  287.388630][   T28]  ? preempt_schedule_thunk+0x1a/0x20
[  287.394048][   T28]  ? watchdog+0xbe8/0x1090
[  287.398525][   T28]  watchdog+0xbf9/0x1090
[  287.402806][   T28]  ? proc_dohung_task_timeout_secs+0x80/0x80
[  287.408829][   T28]  kthread+0x344/0x440
[  287.412937][   T28]  ? kthread_complete_and_exit+0x40/0x40
[  287.418611][   T28]  ret_from_fork+0x1f/0x30
[  287.423079][   T28]  </TASK>
[  287.426360][   T28] Kernel Offset: disabled
[  287.430705][   T28] Rebooting in 86400 seconds..