./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor687348467
<...>
Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts.
execve("./syz-executor687348467", ["./syz-executor687348467"], 0x7fff6c60cab0 /* 10 vars */) = 0
brk(NULL) = 0x555556405000
brk(0x555556405c40) = 0x555556405c40
arch_prctl(ARCH_SET_FS, 0x555556405300) = 0
uname({sysname="Linux", nodename="syzkaller", ...}) = 0
readlink("/proc/self/exe", "/root/syz-executor687348467", 4096) = 27
brk(0x555556426c40) = 0x555556426c40
brk(0x555556427000) = 0x555556427000
mprotect(0x7fe54ecf4000, 16384, PROT_READ) = 0
mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000
mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000
mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address)
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3631
./strace-static-x86_64: Process 3631 attached
[pid 3631] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3631] setpgid(0, 0) = 0
[pid 3631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3631] write(3, "1000", 4) = 4
[pid 3631] close(3) = 0
[pid 3631] memfd_create("syzkaller", 0) = 3
[pid 3631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3631] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3631] munmap(0x7fe546800000, 2097152) = 0
[pid 3631] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3631] ioctl(4, LOOP_SET_FD, 3) = 0
[pid 3631] close(3) = 0
[pid 3631] mkdir("./file0", 0777) = 0
[pid 3631] mount("/dev/loop0", "./file0", "ntfs", 0, "") = 0
[pid 3631] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3
[pid 3631] chdir("./file0") = 0
[pid 3631] ioctl(4, LOOP_CLR_FD) = 0
[pid 3631] close(4) = 0
[pid 3631] creat("./file1", 000) = 4
[pid 3631] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 5
[pid 3631] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 6
[ 53.668898][ T3631] loop0: detected capacity change from 0 to 4096
[ 53.694051][ T3631] ntfs: volume version 3.1.
[ 53.838391][ T3631] syz-executor687 (3631): drop_caches: 1
[pid 3631] sendfile(6, 5, [88] => [671], 2160) = 583
[pid 3631] exit_group(0) = ?
[pid 3631] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3631, si_uid=0, si_status=0, si_utime=1, si_stime=24} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3633
./strace-static-x86_64: Process 3633 attached
[pid 3633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3633] setpgid(0, 0) = 0
[pid 3633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3633] write(3, "1000", 4) = 4
[pid 3633] close(3) = 0
[pid 3633] memfd_create("syzkaller", 0) = 3
[pid 3633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3633] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 53.908582][ T3631] syz-executor687 (3631): drop_caches: 1
[pid 3633] munmap(0x7fe546800000, 2097152) = 0
[pid 3633] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3633] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3633] ioctl(4, LOOP_CLR_FD) = 0
[pid 3633] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3633] close(4) = 0
[pid 3633] close(3) = 0
[pid 3633] creat("./file1", 000) = 3
[pid 3633] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3633] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 54.071458][ T3633] syz-executor687 (3633): drop_caches: 1
[pid 3633] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3633] exit_group(0) = ?
[pid 3633] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3633, si_uid=0, si_status=0, si_utime=0, si_stime=17} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3634 attached
, child_tidptr=0x5555564055d0) = 3634
[pid 3634] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3634] setpgid(0, 0) = 0
[pid 3634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3634] write(3, "1000", 4) = 4
[pid 3634] close(3) = 0
[pid 3634] memfd_create("syzkaller", 0) = 3
[pid 3634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3634] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 54.142575][ T3633] syz-executor687 (3633): drop_caches: 1
[pid 3634] munmap(0x7fe546800000, 2097152) = 0
[pid 3634] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3634] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3634] ioctl(4, LOOP_CLR_FD) = 0
[pid 3634] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3634] close(4) = 0
[pid 3634] close(3) = 0
[pid 3634] creat("./file1", 000) = 3
[pid 3634] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3634] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 54.301583][ T3634] syz-executor687 (3634): drop_caches: 1
[pid 3634] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3634] exit_group(0) = ?
[pid 3634] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3634, si_uid=0, si_status=0, si_utime=0, si_stime=17} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3635
./strace-static-x86_64: Process 3635 attached
[pid 3635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3635] setpgid(0, 0) = 0
[pid 3635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3635] write(3, "1000", 4) = 4
[pid 3635] close(3) = 0
[pid 3635] memfd_create("syzkaller", 0) = 3
[pid 3635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3635] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3635] munmap(0x7fe546800000, 2097152) = 0
[pid 3635] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3635] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3635] ioctl(4, LOOP_CLR_FD) = 0
[pid 3635] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 54.374788][ T3634] syz-executor687 (3634): drop_caches: 1
[pid 3635] close(4) = 0
[pid 3635] close(3) = 0
[pid 3635] creat("./file1", 000) = 3
[pid 3635] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3635] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 54.527010][ T3635] syz-executor687 (3635): drop_caches: 1
[pid 3635] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3635] exit_group(0) = ?
[pid 3635] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3635, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3636
./strace-static-x86_64: Process 3636 attached
[pid 3636] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3636] setpgid(0, 0) = 0
[pid 3636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3636] write(3, "1000", 4) = 4
[pid 3636] close(3) = 0
[pid 3636] memfd_create("syzkaller", 0) = 3
[pid 3636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3636] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3636] munmap(0x7fe546800000, 2097152) = 0
[pid 3636] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3636] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3636] ioctl(4, LOOP_CLR_FD) = 0
[pid 3636] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 54.598906][ T3635] syz-executor687 (3635): drop_caches: 1
[pid 3636] close(4) = 0
[pid 3636] close(3) = 0
[pid 3636] creat("./file1", 000) = 3
[pid 3636] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3636] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 54.749088][ T3636] syz-executor687 (3636): drop_caches: 1
[pid 3636] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3636] exit_group(0) = ?
[pid 3636] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3636, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3637 attached
, child_tidptr=0x5555564055d0) = 3637
[pid 3637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3637] setpgid(0, 0) = 0
[pid 3637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3637] write(3, "1000", 4) = 4
[pid 3637] close(3) = 0
[pid 3637] memfd_create("syzkaller", 0) = 3
[pid 3637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3637] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3637] munmap(0x7fe546800000, 2097152) = 0
[pid 3637] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 54.820705][ T3636] syz-executor687 (3636): drop_caches: 1
[pid 3637] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3637] ioctl(4, LOOP_CLR_FD) = 0
[pid 3637] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3637] close(4) = 0
[pid 3637] close(3) = 0
[pid 3637] creat("./file1", 000) = 3
[pid 3637] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3637] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 54.976610][ T3637] syz-executor687 (3637): drop_caches: 1
[pid 3637] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3637] exit_group(0) = ?
[pid 3637] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3637, si_uid=0, si_status=0, si_utime=0, si_stime=16} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3638
./strace-static-x86_64: Process 3638 attached
[pid 3638] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3638] setpgid(0, 0) = 0
[pid 3638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3638] write(3, "1000", 4) = 4
[pid 3638] close(3) = 0
[pid 3638] memfd_create("syzkaller", 0) = 3
[pid 3638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3638] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3638] munmap(0x7fe546800000, 2097152) = 0
[pid 3638] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3638] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 55.046874][ T3637] syz-executor687 (3637): drop_caches: 1
[pid 3638] ioctl(4, LOOP_CLR_FD) = 0
[pid 3638] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3638] close(4) = 0
[pid 3638] close(3) = 0
[pid 3638] creat("./file1", 000) = 3
[pid 3638] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3638] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 55.208689][ T3638] syz-executor687 (3638): drop_caches: 1
[pid 3638] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3638] exit_group(0) = ?
[pid 3638] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3638, si_uid=0, si_status=0, si_utime=1, si_stime=15} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3639 attached
, child_tidptr=0x5555564055d0) = 3639
[pid 3639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3639] setpgid(0, 0) = 0
[pid 3639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3639] write(3, "1000", 4) = 4
[pid 3639] close(3) = 0
[pid 3639] memfd_create("syzkaller", 0) = 3
[pid 3639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3639] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 55.278564][ T3638] syz-executor687 (3638): drop_caches: 1
[pid 3639] munmap(0x7fe546800000, 2097152) = 0
[pid 3639] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3639] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3639] ioctl(4, LOOP_CLR_FD) = 0
[pid 3639] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3639] close(4) = 0
[pid 3639] close(3) = 0
[pid 3639] creat("./file1", 000) = 3
[pid 3639] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3639] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 55.435475][ T3639] syz-executor687 (3639): drop_caches: 1
[pid 3639] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3639] exit_group(0) = ?
[pid 3639] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3639, si_uid=0, si_status=0, si_utime=0, si_stime=16} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3640
./strace-static-x86_64: Process 3640 attached
[pid 3640] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3640] setpgid(0, 0) = 0
[pid 3640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3640] write(3, "1000", 4) = 4
[pid 3640] close(3) = 0
[pid 3640] memfd_create("syzkaller", 0) = 3
[pid 3640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 55.505957][ T3639] syz-executor687 (3639): drop_caches: 1
[pid 3640] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3640] munmap(0x7fe546800000, 2097152) = 0
[pid 3640] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3640] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3640] ioctl(4, LOOP_CLR_FD) = 0
[pid 3640] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3640] close(4) = 0
[pid 3640] close(3) = 0
[pid 3640] creat("./file1", 000) = 3
[pid 3640] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3640] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 55.677434][ T3640] syz-executor687 (3640): drop_caches: 1
[pid 3640] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3640] exit_group(0) = ?
[pid 3640] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3640, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3641
./strace-static-x86_64: Process 3641 attached
[pid 3641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3641] setpgid(0, 0) = 0
[pid 3641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3641] write(3, "1000", 4) = 4
[pid 3641] close(3) = 0
[pid 3641] memfd_create("syzkaller", 0) = 3
[pid 3641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3641] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3641] munmap(0x7fe546800000, 2097152) = 0
[pid 3641] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3641] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3641] ioctl(4, LOOP_CLR_FD) = 0
[ 55.758194][ T3640] syz-executor687 (3640): drop_caches: 1
[pid 3641] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3641] close(4) = 0
[pid 3641] close(3) = 0
[pid 3641] creat("./file1", 000) = 3
[pid 3641] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3641] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 55.915267][ T3641] syz-executor687 (3641): drop_caches: 1
[pid 3641] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3641] exit_group(0) = ?
[pid 3641] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3641, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3642
./strace-static-x86_64: Process 3642 attached
[pid 3642] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3642] setpgid(0, 0) = 0
[pid 3642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3642] write(3, "1000", 4) = 4
[pid 3642] close(3) = 0
[pid 3642] memfd_create("syzkaller", 0) = 3
[pid 3642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3642] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3642] munmap(0x7fe546800000, 2097152) = 0
[pid 3642] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3642] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3642] ioctl(4, LOOP_CLR_FD) = 0
[ 55.996163][ T3641] syz-executor687 (3641): drop_caches: 1
[pid 3642] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3642] close(4) = 0
[pid 3642] close(3) = 0
[pid 3642] creat("./file1", 000) = 3
[pid 3642] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3642] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 56.151814][ T3642] syz-executor687 (3642): drop_caches: 1
[pid 3642] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3642] exit_group(0) = ?
[pid 3642] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3642, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3643
./strace-static-x86_64: Process 3643 attached
[pid 3643] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3643] setpgid(0, 0) = 0
[pid 3643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3643] write(3, "1000", 4) = 4
[pid 3643] close(3) = 0
[pid 3643] memfd_create("syzkaller", 0) = 3
[pid 3643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3643] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3643] munmap(0x7fe546800000, 2097152) = 0
[ 56.222354][ T3642] syz-executor687 (3642): drop_caches: 1
[pid 3643] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3643] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3643] ioctl(4, LOOP_CLR_FD) = 0
[pid 3643] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3643] close(4) = 0
[pid 3643] close(3) = 0
[pid 3643] creat("./file1", 000) = 3
[pid 3643] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3643] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 56.373496][ T3643] syz-executor687 (3643): drop_caches: 1
[pid 3643] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3643] exit_group(0) = ?
[pid 3643] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3643, si_uid=0, si_status=0, si_utime=0, si_stime=17} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3644
./strace-static-x86_64: Process 3644 attached
[pid 3644] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3644] setpgid(0, 0) = 0
[pid 3644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3644] write(3, "1000", 4) = 4
[pid 3644] close(3) = 0
[pid 3644] memfd_create("syzkaller", 0) = 3
[pid 3644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3644] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3644] munmap(0x7fe546800000, 2097152) = 0
[pid 3644] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3644] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3644] ioctl(4, LOOP_CLR_FD) = 0
[pid 3644] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 56.444161][ T3643] syz-executor687 (3643): drop_caches: 1
[pid 3644] close(4) = 0
[pid 3644] close(3) = 0
[pid 3644] creat("./file1", 000) = 3
[pid 3644] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3644] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 56.590512][ T3644] syz-executor687 (3644): drop_caches: 1
[pid 3644] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3644] exit_group(0) = ?
[pid 3644] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3644, si_uid=0, si_status=0, si_utime=0, si_stime=16} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3645
./strace-static-x86_64: Process 3645 attached
[pid 3645] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3645] setpgid(0, 0) = 0
[pid 3645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3645] write(3, "1000", 4) = 4
[pid 3645] close(3) = 0
[pid 3645] memfd_create("syzkaller", 0) = 3
[pid 3645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3645] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 56.661091][ T3644] syz-executor687 (3644): drop_caches: 1
[pid 3645] munmap(0x7fe546800000, 2097152) = 0
[pid 3645] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3645] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3645] ioctl(4, LOOP_CLR_FD) = 0
[pid 3645] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3645] close(4) = 0
[pid 3645] close(3) = 0
[pid 3645] creat("./file1", 000) = 3
[pid 3645] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3645] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 56.817931][ T3645] syz-executor687 (3645): drop_caches: 1
[pid 3645] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3645] exit_group(0) = ?
[pid 3645] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3645, si_uid=0, si_status=0, si_utime=0, si_stime=17} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3646
./strace-static-x86_64: Process 3646 attached
[pid 3646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3646] setpgid(0, 0) = 0
[pid 3646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3646] write(3, "1000", 4) = 4
[pid 3646] close(3) = 0
[pid 3646] memfd_create("syzkaller", 0) = 3
[pid 3646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 56.889569][ T3645] syz-executor687 (3645): drop_caches: 1
[pid 3646] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3646] munmap(0x7fe546800000, 2097152) = 0
[pid 3646] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3646] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3646] ioctl(4, LOOP_CLR_FD) = 0
[pid 3646] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3646] close(4) = 0
[pid 3646] close(3) = 0
[pid 3646] creat("./file1", 000) = 3
[pid 3646] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3646] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 57.046960][ T3646] syz-executor687 (3646): drop_caches: 1
[pid 3646] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3646] exit_group(0) = ?
[pid 3646] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3646, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3647
./strace-static-x86_64: Process 3647 attached
[pid 3647] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3647] setpgid(0, 0) = 0
[pid 3647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3647] write(3, "1000", 4) = 4
[pid 3647] close(3) = 0
[pid 3647] memfd_create("syzkaller", 0) = 3
[pid 3647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3647] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3647] munmap(0x7fe546800000, 2097152) = 0
[pid 3647] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3647] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3647] ioctl(4, LOOP_CLR_FD) = 0
[ 57.125327][ T3646] syz-executor687 (3646): drop_caches: 1
[pid 3647] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3647] close(4) = 0
[pid 3647] close(3) = 0
[pid 3647] creat("./file1", 000) = 3
[pid 3647] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3647] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 57.277387][ T3647] syz-executor687 (3647): drop_caches: 1
[pid 3647] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3647] exit_group(0) = ?
[pid 3647] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3647, si_uid=0, si_status=0, si_utime=0, si_stime=17} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3648 attached
, child_tidptr=0x5555564055d0) = 3648
[pid 3648] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3648] setpgid(0, 0) = 0
[pid 3648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3648] write(3, "1000", 4) = 4
[pid 3648] close(3) = 0
[pid 3648] memfd_create("syzkaller", 0) = 3
[pid 3648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3648] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 57.357396][ T3647] syz-executor687 (3647): drop_caches: 1
[pid 3648] munmap(0x7fe546800000, 2097152) = 0
[pid 3648] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3648] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3648] ioctl(4, LOOP_CLR_FD) = 0
[pid 3648] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3648] close(4) = 0
[pid 3648] close(3) = 0
[pid 3648] creat("./file1", 000) = 3
[pid 3648] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3648] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 57.518683][ T3648] syz-executor687 (3648): drop_caches: 1
[pid 3648] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3648] exit_group(0) = ?
[pid 3648] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3648, si_uid=0, si_status=0, si_utime=0, si_stime=18} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3649
./strace-static-x86_64: Process 3649 attached
[pid 3649] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3649] setpgid(0, 0) = 0
[pid 3649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3649] write(3, "1000", 4) = 4
[pid 3649] close(3) = 0
[pid 3649] memfd_create("syzkaller", 0) = 3
[pid 3649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3649] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3649] munmap(0x7fe546800000, 2097152) = 0
[pid 3649] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.589764][ T3648] syz-executor687 (3648): drop_caches: 1
[pid 3649] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3649] ioctl(4, LOOP_CLR_FD) = 0
[pid 3649] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3649] close(4) = 0
[pid 3649] close(3) = 0
[pid 3649] creat("./file1", 000) = 3
[pid 3649] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3649] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 57.743490][ T3649] syz-executor687 (3649): drop_caches: 1
[pid 3649] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3649] exit_group(0) = ?
[pid 3649] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3649, si_uid=0, si_status=0, si_utime=0, si_stime=19} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3650
./strace-static-x86_64: Process 3650 attached
[pid 3650] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3650] setpgid(0, 0) = 0
[pid 3650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3650] write(3, "1000", 4) = 4
[pid 3650] close(3) = 0
[pid 3650] memfd_create("syzkaller", 0) = 3
[pid 3650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3650] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3650] munmap(0x7fe546800000, 2097152) = 0
[pid 3650] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 57.813953][ T3649] syz-executor687 (3649): drop_caches: 1
[pid 3650] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3650] ioctl(4, LOOP_CLR_FD) = 0
[pid 3650] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3650] close(4) = 0
[pid 3650] close(3) = 0
[pid 3650] creat("./file1", 000) = 3
[pid 3650] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3650] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 57.976970][ T3650] syz-executor687 (3650): drop_caches: 1
[pid 3650] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3650] exit_group(0) = ?
[pid 3650] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3650, si_uid=0, si_status=0, si_utime=0, si_stime=16} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3651 attached
, child_tidptr=0x5555564055d0) = 3651
[pid 3651] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3651] setpgid(0, 0) = 0
[pid 3651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3651] write(3, "1000", 4) = 4
[pid 3651] close(3) = 0
[pid 3651] memfd_create("syzkaller", 0) = 3
[pid 3651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3651] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3651] munmap(0x7fe546800000, 2097152) = 0
[pid 3651] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 58.047613][ T3650] syz-executor687 (3650): drop_caches: 1
[pid 3651] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3651] ioctl(4, LOOP_CLR_FD) = 0
[pid 3651] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3651] close(4) = 0
[pid 3651] close(3) = 0
[pid 3651] creat("./file1", 000) = 3
[pid 3651] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3651] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 58.203163][ T3651] syz-executor687 (3651): drop_caches: 1
[pid 3651] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3651] exit_group(0) = ?
[pid 3651] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3651, si_uid=0, si_status=0, si_utime=0, si_stime=15} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3652
./strace-static-x86_64: Process 3652 attached
[pid 3652] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3652] setpgid(0, 0) = 0
[pid 3652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3652] write(3, "1000", 4) = 4
[pid 3652] close(3) = 0
[pid 3652] memfd_create("syzkaller", 0) = 3
[pid 3652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3652] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3652] munmap(0x7fe546800000, 2097152) = 0
[pid 3652] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3652] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 58.273000][ T3651] syz-executor687 (3651): drop_caches: 1
[pid 3652] ioctl(4, LOOP_CLR_FD) = 0
[pid 3652] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3652] close(4) = 0
[pid 3652] close(3) = 0
[pid 3652] creat("./file1", 000) = 3
[pid 3652] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3652] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 58.427268][ T3652] syz-executor687 (3652): drop_caches: 1
[pid 3652] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3652] exit_group(0) = ?
[pid 3652] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3652, si_uid=0, si_status=0, si_utime=0, si_stime=19} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3653 attached
, child_tidptr=0x5555564055d0) = 3653
[pid 3653] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3653] setpgid(0, 0) = 0
[pid 3653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3653] write(3, "1000", 4) = 4
[pid 3653] close(3) = 0
[pid 3653] memfd_create("syzkaller", 0) = 3
[pid 3653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3653] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3653] munmap(0x7fe546800000, 2097152) = 0
[pid 3653] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3653] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3653] ioctl(4, LOOP_CLR_FD) = 0
[ 58.505464][ T3652] syz-executor687 (3652): drop_caches: 1
[pid 3653] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3653] close(4) = 0
[pid 3653] close(3) = 0
[pid 3653] creat("./file1", 000) = 3
[pid 3653] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3653] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 58.660270][ T3653] syz-executor687 (3653): drop_caches: 1
[ 58.711538][ T102]
[ 58.713883][ T102] ======================================================
[ 58.720912][ T102] WARNING: possible circular locking dependency detected
[ 58.727947][ T102] 6.1.0-rc6-syzkaller-00012-g4312098baf37 #0 Not tainted
[ 58.734999][ T102] ------------------------------------------------------
[ 58.742380][ T102] kworker/u4:4/102 is trying to acquire lock:
[ 58.744498][ T3653] syz-executor687 (3653): drop_caches: 1
[ 58.748434][ T102] ffff888073dc8940 (&rl->lock){++++}-{3:3}, at: ntfs_read_block+0x91a/0x22e0
[ 58.762858][ T102]
[ 58.762858][ T102] but task is already holding lock:
[ 58.770213][ T102] ffff888073dcb310 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x46/0x610
[ 58.779202][ T102]
[ 58.779202][ T102] which lock already depends on the new lock.
[ 58.779202][ T102]
[ 58.789677][ T102]
[ 58.789677][ T102] the existing dependency chain (in reverse order) is:
[ 58.798694][ T102]
[ 58.798694][ T102] -> #1 (&ni->mrec_lock){+.+.}-{3:3}:
[ 58.806255][ T102] lock_acquire+0x182/0x3c0
[ 58.811290][ T102] __mutex_lock_common+0x1bd/0x26e0
[ 58.817110][ T102] mutex_lock_nested+0x17/0x20
[ 58.822464][ T102] map_mft_record+0x46/0x610
[ 58.827580][ T102] ntfs_truncate+0x24e/0x2720
[ 58.832775][ T102] ntfs_setattr+0x2b9/0x3a0
[ 58.837792][ T102] notify_change+0xe38/0x10f0
[ 58.843056][ T102] do_truncate+0x1fb/0x2e0
[ 58.847983][ T102] path_openat+0x2770/0x2df0
[ 58.853175][ T102] do_filp_open+0x264/0x4f0
[ 58.858195][ T102] do_sys_openat2+0x124/0x4e0
[ 58.863406][ T102] __x64_sys_creat+0x11f/0x160
[ 58.868712][ T102] do_syscall_64+0x3d/0xb0
[ 58.873692][ T102] entry_SYSCALL_64_after_hwframe+0x63/0xcd
[ 58.880114][ T102]
[ 58.880114][ T102] -> #0 (&rl->lock){++++}-{3:3}:
[ 58.887247][ T102] validate_chain+0x1898/0x6ae0
[ 58.892630][ T102] __lock_acquire+0x1292/0x1f60
[ 58.898014][ T102] lock_acquire+0x182/0x3c0
[ 58.903044][ T102] down_read+0x39/0x50
[ 58.907647][ T102] ntfs_read_block+0x91a/0x22e0
[ 58.913025][ T102] filemap_read_folio+0x187/0x7d0
[ 58.918599][ T102] do_read_cache_folio+0x2d3/0x790
[ 58.924232][ T102] read_cache_page+0x56/0x270
[ 58.929466][ T102] ntfs_sync_mft_mirror+0x21a/0x1df0
[ 58.935266][ T102] write_mft_record_nolock+0x1213/0x1930
[ 58.941414][ T102] __ntfs_write_inode+0x721/0xc90
[ 58.946955][ T102] __writeback_single_inode+0x4d6/0x670
[ 58.953026][ T102] writeback_sb_inodes+0xb3b/0x18f0
[ 58.960915][ T102] __writeback_inodes_wb+0x125/0x420
[ 58.966739][ T102] wb_writeback+0x440/0x7b0
[ 58.972210][ T102] wb_workfn+0xb3f/0xef0
[ 58.976980][ T102] process_one_work+0x877/0xdb0
[ 58.982359][ T102] worker_thread+0xb14/0x1330
[ 58.987553][ T102] kthread+0x266/0x300
[ 58.993375][ T102] ret_from_fork+0x1f/0x30
[ 58.998461][ T102]
[ 58.998461][ T102] other info that might help us debug this:
[ 58.998461][ T102]
[ 59.008771][ T102] Possible unsafe locking scenario:
[ 59.008771][ T102]
[ 59.016295][ T102] CPU0 CPU1
[ 59.021648][ T102] ---- ----
[ 59.026998][ T102] lock(&ni->mrec_lock);
[ 59.031341][ T102] lock(&rl->lock);
[ 59.037746][ T102] lock(&ni->mrec_lock);
[ 59.044583][ T102] lock(&rl->lock);
[ 59.048471][ T102]
[ 59.048471][ T102] *** DEADLOCK ***
[ 59.048471][ T102]
[ 59.056724][ T102] 4 locks held by kworker/u4:4/102:
[ 59.061918][ T102] #0: ffff8881457c6938 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x7f2/0xdb0
[ 59.072448][ T102] #1: ffffc90001577d00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x831/0xdb0
[ 59.084529][ T102] #2: ffff888023c720e0 (&type->s_umount_key#63){.+.+}-{3:3}, at: trylock_super+0x1b/0xf0
[ 59.094963][ T102] #3: ffff888073dcb310 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x46/0x610
[ 59.104442][ T102]
[ 59.104442][ T102] stack backtrace:
[ 59.110340][ T102] CPU: 0 PID: 102 Comm: kworker/u4:4 Not tainted 6.1.0-rc6-syzkaller-00012-g4312098baf37 #0
[ 59.120405][ T102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
[ 59.130553][ T102] Workqueue: writeback wb_workfn (flush-7:0)
[ 59.136802][ T102] Call Trace:
[ 59.140076][ T102]
[ 59.143101][ T102] dump_stack_lvl+0x1b1/0x28e
[ 59.147947][ T102] ? nf_tcp_handle_invalid+0x62e/0x62e
[ 59.153408][ T102] ? print_circular_bug+0x13e/0x1c0
[ 59.158603][ T102] check_noncircular+0x2cc/0x390
[ 59.163536][ T102] ? add_chain_block+0x850/0x850
[ 59.168467][ T102] ? lockdep_lock+0x102/0x290
[ 59.173154][ T102] ? validate_chain+0x1478/0x6ae0
[ 59.178176][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.183463][ T102] validate_chain+0x1898/0x6ae0
[ 59.188335][ T102] ? add_chain_block+0x850/0x850
[ 59.193271][ T102] ? lockdep_lock+0x102/0x290
[ 59.197952][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.203321][ T102] ? lockdep_unlock+0x144/0x2e0
[ 59.208164][ T102] ? lockdep_lock+0x290/0x290
[ 59.212850][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.218238][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.223522][ T102] ? validate_chain+0x1478/0x6ae0
[ 59.228548][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.233915][ T102] ? check_noncircular+0x1aa/0x390
[ 59.239023][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.244391][ T102] ? add_chain_block+0x850/0x850
[ 59.249320][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.254688][ T102] ? lockdep_lock+0x102/0x290
[ 59.259391][ T102] ? lockdep_unlock+0x144/0x2e0
[ 59.264235][ T102] ? lockdep_lock+0x290/0x290
[ 59.268904][ T102] ? __bfs+0x369/0x700
[ 59.272965][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.278268][ T102] ? validate_chain+0x177/0x6ae0
[ 59.283206][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.288572][ T102] ? lockdep_lock+0x102/0x290
[ 59.293241][ T102] ? lockdep_unlock+0x144/0x2e0
[ 59.298093][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.303377][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.308742][ T102] ? validate_chain+0x1478/0x6ae0
[ 59.313780][ T102] ? lockdep_lock+0x290/0x290
[ 59.318459][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.323747][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.329134][ T102] ? validate_chain+0x1478/0x6ae0
[ 59.334181][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.339572][ T102] ? validate_chain+0x177/0x6ae0
[ 59.344603][ T102] ? _find_first_zero_bit+0xe8/0x110
[ 59.349900][ T102] ? reacquire_held_locks+0x650/0x650
[ 59.355286][ T102] ? rcu_read_lock_sched_held+0x87/0x110
[ 59.360920][ T102] ? rcu_read_lock_sched_held+0x87/0x110
[ 59.366569][ T102] ? __stack_depot_save+0x41c/0x4a0
[ 59.371759][ T102] ? trace_lock_release+0x95/0x220
[ 59.376869][ T102] ? mark_lock+0x9a/0x350
[ 59.381201][ T102] ? deref_stack_reg+0x17a/0x210
[ 59.386834][ T102] ? unwind_next_frame+0x1b06/0x24c0
[ 59.392116][ T102] ? deref_stack_reg+0x17a/0x210
[ 59.397045][ T102] ? deref_stack_reg+0x17a/0x210
[ 59.401976][ T102] ? unwind_next_frame+0x1b06/0x24c0
[ 59.407254][ T102] ? deref_stack_reg+0x17a/0x210
[ 59.412186][ T102] ? preempt_count_add+0x8d/0x180
[ 59.417222][ T102] ? unwind_next_frame+0x10d7/0x24c0
[ 59.422517][ T102] ? ret_from_fork+0x1f/0x30
[ 59.427127][ T102] ? stack_trace_save+0x1e0/0x1e0
[ 59.432185][ T102] ? arch_stack_walk+0xb2/0xe0
[ 59.437055][ T102] ? ret_from_fork+0x1f/0x30
[ 59.441745][ T102] ? stack_trace_save+0x104/0x1e0
[ 59.446886][ T102] ? stack_trace_snprint+0xf0/0xf0
[ 59.452001][ T102] ? kasan_set_track+0x52/0x60
[ 59.456857][ T102] ? alloc_buffer_head+0x20/0xf0
[ 59.461886][ T102] ? alloc_page_buffers+0x179/0x460
[ 59.467438][ T102] ? create_empty_buffers+0x36/0xe30
[ 59.472730][ T102] ? ntfs_read_block+0x2b0/0x22e0
[ 59.477934][ T102] ? filemap_read_folio+0x187/0x7d0
[ 59.483271][ T102] ? lockdep_unlock+0x144/0x2e0
[ 59.488124][ T102] ? lockdep_lock+0x290/0x290
[ 59.492833][ T102] ? mark_lock+0x2a1/0x350
[ 59.497246][ T102] __lock_acquire+0x1292/0x1f60
[ 59.502115][ T102] lock_acquire+0x182/0x3c0
[ 59.506812][ T102] ? ntfs_read_block+0x91a/0x22e0
[ 59.511848][ T102] ? read_lock_is_recursive+0x10/0x10
[ 59.517710][ T102] ? __might_sleep+0xc0/0xc0
[ 59.522299][ T102] ? _raw_read_unlock_irqrestore+0x8b/0x120
[ 59.528261][ T102] ? lockdep_hardirqs_on+0x8d/0x130
[ 59.533454][ T102] ? _raw_read_unlock_irqrestore+0xc1/0x120
[ 59.539431][ T102] ? _raw_read_unlock+0x40/0x40
[ 59.544291][ T102] ? do_raw_spin_unlock+0x134/0x8a0
[ 59.549489][ T102] down_read+0x39/0x50
[ 59.553644][ T102] ? ntfs_read_block+0x91a/0x22e0
[ 59.558663][ T102] ntfs_read_block+0x91a/0x22e0
[ 59.563617][ T102] ? compound_nr+0x1b0/0x1b0
[ 59.568382][ T102] ? ntfs_read_folio+0xc23/0x1060
[ 59.573408][ T102] ? folio_add_lru+0x480/0x960
[ 59.578169][ T102] filemap_read_folio+0x187/0x7d0
[ 59.583188][ T102] ? ntfs_writepage+0x1d10/0x1d10
[ 59.588212][ T102] ? maybe_unlock_mmap_for_io+0x130/0x130
[ 59.593926][ T102] ? folio_alloc+0x47/0x50
[ 59.598337][ T102] ? filemap_alloc_folio+0x1ac/0x1c0
[ 59.603708][ T102] do_read_cache_folio+0x2d3/0x790
[ 59.609513][ T102] ? ntfs_writepage+0x1d10/0x1d10
[ 59.614539][ T102] read_cache_page+0x56/0x270
[ 59.619317][ T102] ntfs_sync_mft_mirror+0x21a/0x1df0
[ 59.624781][ T102] ? should_fail_request+0x70/0x70
[ 59.629889][ T102] ? rcu_read_lock_sched_held+0x87/0x110
[ 59.635520][ T102] ? __mark_mft_record_dirty+0x170/0x170
[ 59.641147][ T102] ? submit_bio_noacct+0xf50/0x1880
[ 59.646349][ T102] write_mft_record_nolock+0x1213/0x1930
[ 59.652261][ T102] ? lock_page+0x2b0/0x2b0
[ 59.656757][ T102] ? slab_free_freelist_hook+0x12e/0x1a0
[ 59.662387][ T102] ? trace_kmem_cache_alloc+0x30/0xe0
[ 59.667846][ T102] ? __ntfs_write_inode+0x695/0xc90
[ 59.673039][ T102] __ntfs_write_inode+0x721/0xc90
[ 59.678079][ T102] __writeback_single_inode+0x4d6/0x670
[ 59.683624][ T102] writeback_sb_inodes+0xb3b/0x18f0
[ 59.688837][ T102] ? queue_io+0x400/0x400
[ 59.693176][ T102] __writeback_inodes_wb+0x125/0x420
[ 59.698464][ T102] wb_writeback+0x440/0x7b0
[ 59.702984][ T102] ? trace_writeback_exec+0x2c0/0x2c0
[ 59.708362][ T102] ? _find_next_bit+0x134/0x140
[ 59.713213][ T102] wb_workfn+0xb3f/0xef0
[ 59.717458][ T102] ? inode_wait_for_writeback+0x2c0/0x2c0
[ 59.723277][ T102] ? rcu_read_lock_sched_held+0x87/0x110
[ 59.729077][ T102] ? __bpf_trace_rcu_stall_warning+0x10/0x10
[ 59.735058][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120
[ 59.740948][ T102] ? do_raw_spin_unlock+0x134/0x8a0
[ 59.746232][ T102] process_one_work+0x877/0xdb0
[ 59.751095][ T102] ? worker_detach_from_pool+0x260/0x260
[ 59.756724][ T102] ? _raw_spin_lock_irq+0xba/0xf0
[pid 3653] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3653] exit_group(0) = ?
[pid 3653] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3653, si_uid=0, si_status=0, si_utime=0, si_stime=15} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3654 attached
, child_tidptr=0x5555564055d0) = 3654
[pid 3654] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3654] setpgid(0, 0) = 0
[pid 3654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3654] write(3, "1000", 4) = 4
[pid 3654] close(3) = 0
[pid 3654] memfd_create("syzkaller", 0) = 3
[pid 3654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3654] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3654] munmap(0x7fe546800000, 2097152) = 0
[pid 3654] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3654] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3654] ioctl(4, LOOP_CLR_FD) = 0
[pid 3654] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3654] close(4) = 0
[pid 3654] close(3) = 0
[ 59.761741][ T102] ? _raw_spin_lock_irqsave+0x100/0x100
[ 59.767283][ T102] worker_thread+0xb14/0x1330
[ 59.772049][ T102] ? _raw_spin_unlock_irqrestore+0xc1/0x120
[ 59.777945][ T102] kthread+0x266/0x300
[ 59.782012][ T102] ? rcu_lock_release+0x20/0x20
[ 59.786855][ T102] ? kthread_blkcg+0xd0/0xd0
[ 59.791433][ T102] ret_from_fork+0x1f/0x30
[ 59.795851][ T102]
[pid 3654] creat("./file1", 000) = 3
[pid 3654] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3654] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3654] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3654] exit_group(0) = ?
[pid 3654] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3654, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3655
./strace-static-x86_64: Process 3655 attached
[pid 3655] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3655] setpgid(0, 0) = 0
[pid 3655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3655] write(3, "1000", 4) = 4
[pid 3655] close(3) = 0
[pid 3655] memfd_create("syzkaller", 0) = 3
[pid 3655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3655] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3655] munmap(0x7fe546800000, 2097152) = 0
[pid 3655] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3655] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3655] ioctl(4, LOOP_CLR_FD) = 0
[ 59.881673][ T3654] syz-executor687 (3654): drop_caches: 1
[ 59.918159][ T3654] syz-executor687 (3654): drop_caches: 1
[pid 3655] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3655] close(4) = 0
[pid 3655] close(3) = 0
[pid 3655] creat("./file1", 000) = 3
[pid 3655] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3655] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3655] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3655] exit_group(0) = ?
[pid 3655] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3655, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3656
./strace-static-x86_64: Process 3656 attached
[pid 3656] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3656] setpgid(0, 0) = 0
[pid 3656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3656] write(3, "1000", 4) = 4
[pid 3656] close(3) = 0
[pid 3656] memfd_create("syzkaller", 0) = 3
[pid 3656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 60.008938][ T3655] syz-executor687 (3655): drop_caches: 1
[ 60.045656][ T3655] syz-executor687 (3655): drop_caches: 1
[pid 3656] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3656] munmap(0x7fe546800000, 2097152) = 0
[pid 3656] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3656] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3656] ioctl(4, LOOP_CLR_FD) = 0
[pid 3656] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3656] close(4) = 0
[pid 3656] close(3) = 0
[pid 3656] creat("./file1", 000) = 3
[pid 3656] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3656] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3656] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3656] exit_group(0) = ?
[pid 3656] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3656, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3657 attached
, child_tidptr=0x5555564055d0) = 3657
[pid 3657] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3657] setpgid(0, 0) = 0
[pid 3657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3657] write(3, "1000", 4) = 4
[pid 3657] close(3) = 0
[pid 3657] memfd_create("syzkaller", 0) = 3
[pid 3657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3657] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3657] munmap(0x7fe546800000, 2097152) = 0
[pid 3657] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3657] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3657] ioctl(4, LOOP_CLR_FD) = 0
[ 60.142534][ T3656] syz-executor687 (3656): drop_caches: 1
[ 60.179096][ T3656] syz-executor687 (3656): drop_caches: 1
[pid 3657] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3657] close(4) = 0
[pid 3657] close(3) = 0
[pid 3657] creat("./file1", 000) = 3
[pid 3657] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3657] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3657] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3657] exit_group(0) = ?
[pid 3657] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3657, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3658 attached
, child_tidptr=0x5555564055d0) = 3658
[pid 3658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3658] setpgid(0, 0) = 0
[pid 3658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3658] write(3, "1000", 4) = 4
[pid 3658] close(3) = 0
[pid 3658] memfd_create("syzkaller", 0) = 3
[pid 3658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3658] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3658] munmap(0x7fe546800000, 2097152) = 0
[ 60.276701][ T3657] syz-executor687 (3657): drop_caches: 1
[ 60.316589][ T3657] syz-executor687 (3657): drop_caches: 1
[pid 3658] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3658] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3658] ioctl(4, LOOP_CLR_FD) = 0
[pid 3658] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3658] close(4) = 0
[pid 3658] close(3) = 0
[pid 3658] creat("./file1", 000) = 3
[pid 3658] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3658] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3658] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3658] exit_group(0) = ?
[pid 3658] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3658, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3659 attached
[pid 3659] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3659] setpgid(0, 0) = 0
[pid 3659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3659] write(3, "1000", 4) = 4
[pid 3659] close(3) = 0
[pid 3630] <... clone resumed>, child_tidptr=0x5555564055d0) = 3659
[pid 3659] memfd_create("syzkaller", 0) = 3
[pid 3659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3659] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3659] munmap(0x7fe546800000, 2097152) = 0
[pid 3659] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3659] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3659] ioctl(4, LOOP_CLR_FD) = 0
[ 60.410927][ T3658] syz-executor687 (3658): drop_caches: 1
[ 60.447489][ T3658] syz-executor687 (3658): drop_caches: 1
[pid 3659] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3659] close(4) = 0
[pid 3659] close(3) = 0
[pid 3659] creat("./file1", 000) = 3
[pid 3659] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3659] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3659] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3659] exit_group(0) = ?
[pid 3659] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3659, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3660
./strace-static-x86_64: Process 3660 attached
[pid 3660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3660] setpgid(0, 0) = 0
[pid 3660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3660] write(3, "1000", 4) = 4
[pid 3660] close(3) = 0
[pid 3660] memfd_create("syzkaller", 0) = 3
[pid 3660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3660] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3660] munmap(0x7fe546800000, 2097152) = 0
[pid 3660] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3660] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3660] ioctl(4, LOOP_CLR_FD) = 0
[pid 3660] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 60.540139][ T3659] syz-executor687 (3659): drop_caches: 1
[ 60.579611][ T3659] syz-executor687 (3659): drop_caches: 1
[pid 3660] close(4) = 0
[pid 3660] close(3) = 0
[pid 3660] creat("./file1", 000) = 3
[pid 3660] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3660] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3660] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3660] exit_group(0) = ?
[pid 3660] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3660, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3661 attached
[pid 3661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3630] <... clone resumed>, child_tidptr=0x5555564055d0) = 3661
[pid 3661] setpgid(0, 0) = 0
[pid 3661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3661] write(3, "1000", 4) = 4
[pid 3661] close(3) = 0
[pid 3661] memfd_create("syzkaller", 0) = 3
[pid 3661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3661] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3661] munmap(0x7fe546800000, 2097152) = 0
[pid 3661] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3661] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3661] ioctl(4, LOOP_CLR_FD) = 0
[pid 3661] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3661] close(4) = 0
[ 60.676362][ T3660] syz-executor687 (3660): drop_caches: 1
[ 60.712729][ T3660] syz-executor687 (3660): drop_caches: 1
[pid 3661] close(3) = 0
[pid 3661] creat("./file1", 000) = 3
[pid 3661] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3661] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3661] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3661] exit_group(0) = ?
[pid 3661] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3661, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3662
./strace-static-x86_64: Process 3662 attached
[pid 3662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3662] setpgid(0, 0) = 0
[pid 3662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3662] write(3, "1000", 4) = 4
[pid 3662] close(3) = 0
[pid 3662] memfd_create("syzkaller", 0) = 3
[pid 3662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3662] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3662] munmap(0x7fe546800000, 2097152) = 0
[pid 3662] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3662] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3662] ioctl(4, LOOP_CLR_FD) = 0
[pid 3662] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3662] close(4) = 0
[ 60.799755][ T3661] syz-executor687 (3661): drop_caches: 1
[ 60.839932][ T3661] syz-executor687 (3661): drop_caches: 1
[pid 3662] close(3) = 0
[pid 3662] creat("./file1", 000) = 3
[pid 3662] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3662] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3662] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3662] exit_group(0) = ?
[pid 3662] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3662, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3663
./strace-static-x86_64: Process 3663 attached
[pid 3663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3663] setpgid(0, 0) = 0
[pid 3663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3663] write(3, "1000", 4) = 4
[pid 3663] close(3) = 0
[pid 3663] memfd_create("syzkaller", 0) = 3
[pid 3663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3663] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3663] munmap(0x7fe546800000, 2097152) = 0
[ 60.923787][ T3662] syz-executor687 (3662): drop_caches: 1
[ 60.963440][ T3662] syz-executor687 (3662): drop_caches: 1
[pid 3663] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3663] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3663] ioctl(4, LOOP_CLR_FD) = 0
[pid 3663] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3663] close(4) = 0
[pid 3663] close(3) = 0
[pid 3663] creat("./file1", 000) = 3
[pid 3663] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3663] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3663] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3663] exit_group(0) = ?
[pid 3663] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3663, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3664
./strace-static-x86_64: Process 3664 attached
[pid 3664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3664] setpgid(0, 0) = 0
[pid 3664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3664] write(3, "1000", 4) = 4
[pid 3664] close(3) = 0
[pid 3664] memfd_create("syzkaller", 0) = 3
[pid 3664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3664] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3664] munmap(0x7fe546800000, 2097152) = 0
[pid 3664] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3664] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3664] ioctl(4, LOOP_CLR_FD) = 0
[pid 3664] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 61.055351][ T3663] syz-executor687 (3663): drop_caches: 1
[ 61.092376][ T3663] syz-executor687 (3663): drop_caches: 1
[pid 3664] close(4) = 0
[pid 3664] close(3) = 0
[pid 3664] creat("./file1", 000) = 3
[pid 3664] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3664] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3664] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3664] exit_group(0) = ?
[pid 3664] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3664, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3665
./strace-static-x86_64: Process 3665 attached
[pid 3665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3665] setpgid(0, 0) = 0
[pid 3665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3665] write(3, "1000", 4) = 4
[pid 3665] close(3) = 0
[pid 3665] memfd_create("syzkaller", 0) = 3
[pid 3665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3665] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3665] munmap(0x7fe546800000, 2097152) = 0
[pid 3665] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3665] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3665] ioctl(4, LOOP_CLR_FD) = 0
[ 61.180968][ T3664] syz-executor687 (3664): drop_caches: 1
[ 61.217878][ T3664] syz-executor687 (3664): drop_caches: 1
[pid 3665] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3665] close(4) = 0
[pid 3665] close(3) = 0
[pid 3665] creat("./file1", 000) = 3
[pid 3665] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3665] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3665] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3665] exit_group(0) = ?
[pid 3665] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3665, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3666
./strace-static-x86_64: Process 3666 attached
[pid 3666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3666] setpgid(0, 0) = 0
[pid 3666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3666] write(3, "1000", 4) = 4
[pid 3666] close(3) = 0
[pid 3666] memfd_create("syzkaller", 0) = 3
[pid 3666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3666] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3666] munmap(0x7fe546800000, 2097152) = 0
[pid 3666] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3666] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3666] ioctl(4, LOOP_CLR_FD) = 0
[pid 3666] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3666] close(4) = 0
[ 61.311499][ T3665] syz-executor687 (3665): drop_caches: 1
[ 61.350034][ T3665] syz-executor687 (3665): drop_caches: 1
[pid 3666] close(3) = 0
[pid 3666] creat("./file1", 000) = 3
[pid 3666] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3666] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3666] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3666] exit_group(0) = ?
[pid 3666] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3666, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3667
./strace-static-x86_64: Process 3667 attached
[pid 3667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3667] setpgid(0, 0) = 0
[pid 3667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3667] write(3, "1000", 4) = 4
[pid 3667] close(3) = 0
[pid 3667] memfd_create("syzkaller", 0) = 3
[pid 3667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 61.437087][ T3666] syz-executor687 (3666): drop_caches: 1
[ 61.473316][ T3666] syz-executor687 (3666): drop_caches: 1
[pid 3667] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3667] munmap(0x7fe546800000, 2097152) = 0
[pid 3667] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3667] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3667] ioctl(4, LOOP_CLR_FD) = 0
[pid 3667] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3667] close(4) = 0
[pid 3667] close(3) = 0
[pid 3667] creat("./file1", 000) = 3
[pid 3667] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3667] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3667] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3667] exit_group(0) = ?
[pid 3667] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3667, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3668
./strace-static-x86_64: Process 3668 attached
[pid 3668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3668] setpgid(0, 0) = 0
[pid 3668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3668] write(3, "1000", 4) = 4
[pid 3668] close(3) = 0
[pid 3668] memfd_create("syzkaller", 0) = 3
[pid 3668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3668] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3668] munmap(0x7fe546800000, 2097152) = 0
[pid 3668] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3668] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3668] ioctl(4, LOOP_CLR_FD) = 0
[ 61.572643][ T3667] syz-executor687 (3667): drop_caches: 1
[ 61.609048][ T3667] syz-executor687 (3667): drop_caches: 1
[pid 3668] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3668] close(4) = 0
[pid 3668] close(3) = 0
[pid 3668] creat("./file1", 000) = 3
[pid 3668] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3668] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3668] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3668] exit_group(0) = ?
[pid 3668] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3668, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3669
./strace-static-x86_64: Process 3669 attached
[pid 3669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3669] setpgid(0, 0) = 0
[pid 3669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3669] write(3, "1000", 4) = 4
[pid 3669] close(3) = 0
[pid 3669] memfd_create("syzkaller", 0) = 3
[pid 3669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3669] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3669] munmap(0x7fe546800000, 2097152) = 0
[pid 3669] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3669] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3669] ioctl(4, LOOP_CLR_FD) = 0
[pid 3669] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 61.710419][ T3668] syz-executor687 (3668): drop_caches: 1
[ 61.749289][ T3668] syz-executor687 (3668): drop_caches: 1
[pid 3669] close(4) = 0
[pid 3669] close(3) = 0
[pid 3669] creat("./file1", 000) = 3
[pid 3669] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3669] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 61.835978][ T3669] syz-executor687 (3669): drop_caches: 1
[pid 3669] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3669] exit_group(0) = ?
[pid 3669] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3669, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3670
./strace-static-x86_64: Process 3670 attached
[pid 3670] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3670] setpgid(0, 0) = 0
[pid 3670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3670] write(3, "1000", 4) = 4
[pid 3670] close(3) = 0
[pid 3670] memfd_create("syzkaller", 0) = 3
[pid 3670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3670] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3670] munmap(0x7fe546800000, 2097152) = 0
[pid 3670] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3670] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3670] ioctl(4, LOOP_CLR_FD) = 0
[pid 3670] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3670] close(4) = 0
[ 61.876207][ T3669] syz-executor687 (3669): drop_caches: 1
[pid 3670] close(3) = 0
[pid 3670] creat("./file1", 000) = 3
[pid 3670] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3670] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3670] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3670] exit_group(0) = ?
[pid 3670] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3670, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3671 attached
, child_tidptr=0x5555564055d0) = 3671
[pid 3671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3671] setpgid(0, 0) = 0
[pid 3671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3671] write(3, "1000", 4) = 4
[pid 3671] close(3) = 0
[pid 3671] memfd_create("syzkaller", 0) = 3
[pid 3671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3671] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3671] munmap(0x7fe546800000, 2097152) = 0
[pid 3671] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3671] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3671] ioctl(4, LOOP_CLR_FD) = 0
[ 61.977623][ T3670] syz-executor687 (3670): drop_caches: 1
[ 62.013994][ T3670] syz-executor687 (3670): drop_caches: 1
[pid 3671] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3671] close(4) = 0
[pid 3671] close(3) = 0
[pid 3671] creat("./file1", 000) = 3
[pid 3671] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3671] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3671] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3671] exit_group(0) = ?
[pid 3671] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3671, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3672
./strace-static-x86_64: Process 3672 attached
[pid 3672] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3672] setpgid(0, 0) = 0
[pid 3672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3672] write(3, "1000", 4) = 4
[pid 3672] close(3) = 0
[pid 3672] memfd_create("syzkaller", 0) = 3
[pid 3672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3672] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3672] munmap(0x7fe546800000, 2097152) = 0
[pid 3672] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.111123][ T3671] syz-executor687 (3671): drop_caches: 1
[ 62.149702][ T3671] syz-executor687 (3671): drop_caches: 1
[pid 3672] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3672] ioctl(4, LOOP_CLR_FD) = 0
[pid 3672] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3672] close(4) = 0
[pid 3672] close(3) = 0
[pid 3672] creat("./file1", 000) = 3
[pid 3672] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3672] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3672] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3672] exit_group(0) = ?
[pid 3672] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3672, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3673 attached
, child_tidptr=0x5555564055d0) = 3673
[pid 3673] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3673] setpgid(0, 0) = 0
[pid 3673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3673] write(3, "1000", 4) = 4
[pid 3673] close(3) = 0
[pid 3673] memfd_create("syzkaller", 0) = 3
[pid 3673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3673] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3673] munmap(0x7fe546800000, 2097152) = 0
[pid 3673] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.244012][ T3672] syz-executor687 (3672): drop_caches: 1
[ 62.280033][ T3672] syz-executor687 (3672): drop_caches: 1
[pid 3673] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3673] ioctl(4, LOOP_CLR_FD) = 0
[pid 3673] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3673] close(4) = 0
[pid 3673] close(3) = 0
[pid 3673] creat("./file1", 000) = 3
[pid 3673] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3673] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3673] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3673] exit_group(0) = ?
[pid 3673] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3673, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3674 attached
, child_tidptr=0x5555564055d0) = 3674
[pid 3674] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3674] setpgid(0, 0) = 0
[pid 3674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3674] write(3, "1000", 4) = 4
[pid 3674] close(3) = 0
[pid 3674] memfd_create("syzkaller", 0) = 3
[pid 3674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3674] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3674] munmap(0x7fe546800000, 2097152) = 0
[pid 3674] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 62.374306][ T3673] syz-executor687 (3673): drop_caches: 1
[ 62.412889][ T3673] syz-executor687 (3673): drop_caches: 1
[pid 3674] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3674] ioctl(4, LOOP_CLR_FD) = 0
[pid 3674] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3674] close(4) = 0
[pid 3674] close(3) = 0
[pid 3674] creat("./file1", 000) = 3
[pid 3674] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3674] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3674] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3674] exit_group(0) = ?
[pid 3674] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3674, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3675
./strace-static-x86_64: Process 3675 attached
[pid 3675] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3675] setpgid(0, 0) = 0
[pid 3675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3675] write(3, "1000", 4) = 4
[pid 3675] close(3) = 0
[pid 3675] memfd_create("syzkaller", 0) = 3
[pid 3675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3675] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3675] munmap(0x7fe546800000, 2097152) = 0
[pid 3675] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3675] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3675] ioctl(4, LOOP_CLR_FD) = 0
[ 62.503990][ T3674] syz-executor687 (3674): drop_caches: 1
[ 62.542006][ T3674] syz-executor687 (3674): drop_caches: 1
[pid 3675] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3675] close(4) = 0
[pid 3675] close(3) = 0
[pid 3675] creat("./file1", 000) = 3
[pid 3675] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3675] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3675] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3675] exit_group(0) = ?
[pid 3675] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3675, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3676 attached
, child_tidptr=0x5555564055d0) = 3676
[pid 3676] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3676] setpgid(0, 0) = 0
[pid 3676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3676] write(3, "1000", 4) = 4
[pid 3676] close(3) = 0
[pid 3676] memfd_create("syzkaller", 0) = 3
[pid 3676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3676] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3676] munmap(0x7fe546800000, 2097152) = 0
[pid 3676] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3676] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 62.632928][ T3675] syz-executor687 (3675): drop_caches: 1
[ 62.671312][ T3675] syz-executor687 (3675): drop_caches: 1
[pid 3676] ioctl(4, LOOP_CLR_FD) = 0
[pid 3676] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3676] close(4) = 0
[pid 3676] close(3) = 0
[pid 3676] creat("./file1", 000) = 3
[pid 3676] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3676] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3676] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3676] exit_group(0) = ?
[pid 3676] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3676, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3677 attached
, child_tidptr=0x5555564055d0) = 3677
[pid 3677] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3677] setpgid(0, 0) = 0
[pid 3677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3677] write(3, "1000", 4) = 4
[pid 3677] close(3) = 0
[pid 3677] memfd_create("syzkaller", 0) = 3
[pid 3677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 62.763511][ T3676] syz-executor687 (3676): drop_caches: 1
[ 62.802606][ T3676] syz-executor687 (3676): drop_caches: 1
[pid 3677] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3677] munmap(0x7fe546800000, 2097152) = 0
[pid 3677] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3677] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3677] ioctl(4, LOOP_CLR_FD) = 0
[pid 3677] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3677] close(4) = 0
[pid 3677] close(3) = 0
[pid 3677] creat("./file1", 000) = 3
[pid 3677] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3677] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 62.899033][ T3677] syz-executor687 (3677): drop_caches: 1
[pid 3677] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3677] exit_group(0) = ?
[pid 3677] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3677, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3678 attached
, child_tidptr=0x5555564055d0) = 3678
[pid 3678] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3678] setpgid(0, 0) = 0
[pid 3678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3678] write(3, "1000", 4) = 4
[pid 3678] close(3) = 0
[pid 3678] memfd_create("syzkaller", 0) = 3
[pid 3678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3678] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3678] munmap(0x7fe546800000, 2097152) = 0
[pid 3678] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3678] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3678] ioctl(4, LOOP_CLR_FD) = 0
[pid 3678] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3678] close(4) = 0
[pid 3678] close(3) = 0
[pid 3678] creat("./file1", 000) = 3
[pid 3678] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3678] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 62.939340][ T3677] syz-executor687 (3677): drop_caches: 1
[pid 3678] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3678] exit_group(0) = ?
[pid 3678] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3678, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3679 attached
, child_tidptr=0x5555564055d0) = 3679
[pid 3679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3679] setpgid(0, 0) = 0
[pid 3679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3679] write(3, "1000", 4) = 4
[pid 3679] close(3) = 0
[pid 3679] memfd_create("syzkaller", 0) = 3
[pid 3679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 63.032566][ T3678] syz-executor687 (3678): drop_caches: 1
[ 63.070378][ T3678] syz-executor687 (3678): drop_caches: 1
[pid 3679] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3679] munmap(0x7fe546800000, 2097152) = 0
[pid 3679] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3679] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3679] ioctl(4, LOOP_CLR_FD) = 0
[pid 3679] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3679] close(4) = 0
[pid 3679] close(3) = 0
[pid 3679] creat("./file1", 000) = 3
[pid 3679] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3679] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3679] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3679] exit_group(0) = ?
[pid 3679] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3679, si_uid=0, si_status=0, si_utime=0, si_stime=6} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3680
./strace-static-x86_64: Process 3680 attached
[pid 3680] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3680] setpgid(0, 0) = 0
[pid 3680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3680] write(3, "1000", 4) = 4
[pid 3680] close(3) = 0
[pid 3680] memfd_create("syzkaller", 0) = 3
[pid 3680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3680] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3680] munmap(0x7fe546800000, 2097152) = 0
[pid 3680] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3680] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3680] ioctl(4, LOOP_CLR_FD) = 0
[pid 3680] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 63.166656][ T3679] syz-executor687 (3679): drop_caches: 1
[ 63.204125][ T3679] syz-executor687 (3679): drop_caches: 1
[pid 3680] close(4) = 0
[pid 3680] close(3) = 0
[pid 3680] creat("./file1", 000) = 3
[pid 3680] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3680] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3680] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3680] exit_group(0) = ?
[pid 3680] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3680, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3681 attached
, child_tidptr=0x5555564055d0) = 3681
[pid 3681] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3681] setpgid(0, 0) = 0
[pid 3681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3681] write(3, "1000", 4) = 4
[pid 3681] close(3) = 0
[pid 3681] memfd_create("syzkaller", 0) = 3
[pid 3681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3681] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3681] munmap(0x7fe546800000, 2097152) = 0
[pid 3681] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 63.296629][ T3680] syz-executor687 (3680): drop_caches: 1
[ 63.336078][ T3680] syz-executor687 (3680): drop_caches: 1
[pid 3681] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3681] ioctl(4, LOOP_CLR_FD) = 0
[pid 3681] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3681] close(4) = 0
[pid 3681] close(3) = 0
[pid 3681] creat("./file1", 000) = 3
[pid 3681] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3681] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 63.444536][ T3681] syz-executor687 (3681): drop_caches: 1
[pid 3681] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3681] exit_group(0) = ?
[pid 3681] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3681, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3682
./strace-static-x86_64: Process 3682 attached
[pid 3682] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3682] setpgid(0, 0) = 0
[pid 3682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3682] write(3, "1000", 4) = 4
[pid 3682] close(3) = 0
[pid 3682] memfd_create("syzkaller", 0) = 3
[pid 3682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3682] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3682] munmap(0x7fe546800000, 2097152) = 0
[pid 3682] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3682] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3682] ioctl(4, LOOP_CLR_FD) = 0
[pid 3682] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3682] close(4) = 0
[ 63.488283][ T3681] syz-executor687 (3681): drop_caches: 1
[pid 3682] close(3) = 0
[pid 3682] creat("./file1", 000) = 3
[pid 3682] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3682] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3682] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3682] exit_group(0) = ?
[pid 3682] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3682, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3683
./strace-static-x86_64: Process 3683 attached
[pid 3683] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3683] setpgid(0, 0) = 0
[pid 3683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3683] write(3, "1000", 4) = 4
[pid 3683] close(3) = 0
[pid 3683] memfd_create("syzkaller", 0) = 3
[pid 3683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3683] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3683] munmap(0x7fe546800000, 2097152) = 0
[pid 3683] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3683] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 63.587542][ T3682] syz-executor687 (3682): drop_caches: 1
[ 63.624773][ T3682] syz-executor687 (3682): drop_caches: 1
[pid 3683] ioctl(4, LOOP_CLR_FD) = 0
[pid 3683] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3683] close(4) = 0
[pid 3683] close(3) = 0
[pid 3683] creat("./file1", 000) = 3
[pid 3683] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3683] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3683] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3683] exit_group(0) = ?
[pid 3683] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3683, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3684 attached
, child_tidptr=0x5555564055d0) = 3684
[pid 3684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3684] setpgid(0, 0) = 0
[pid 3684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3684] write(3, "1000", 4) = 4
[pid 3684] close(3) = 0
[pid 3684] memfd_create("syzkaller", 0) = 3
[pid 3684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[ 63.723739][ T3683] syz-executor687 (3683): drop_caches: 1
[ 63.761475][ T3683] syz-executor687 (3683): drop_caches: 1
[pid 3684] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3684] munmap(0x7fe546800000, 2097152) = 0
[pid 3684] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3684] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3684] ioctl(4, LOOP_CLR_FD) = 0
[pid 3684] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3684] close(4) = 0
[pid 3684] close(3) = 0
[pid 3684] creat("./file1", 000) = 3
[pid 3684] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3684] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3684] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3684] exit_group(0) = ?
[pid 3684] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3684, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3685
./strace-static-x86_64: Process 3685 attached
[pid 3685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3685] setpgid(0, 0) = 0
[pid 3685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3685] write(3, "1000", 4) = 4
[pid 3685] close(3) = 0
[pid 3685] memfd_create("syzkaller", 0) = 3
[pid 3685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3685] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3685] munmap(0x7fe546800000, 2097152) = 0
[pid 3685] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3685] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3685] ioctl(4, LOOP_CLR_FD) = 0
[pid 3685] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3685] close(4) = 0
[ 63.854405][ T3684] syz-executor687 (3684): drop_caches: 1
[ 63.892250][ T3684] syz-executor687 (3684): drop_caches: 1
[pid 3685] close(3) = 0
[pid 3685] creat("./file1", 000) = 3
[pid 3685] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3685] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3685] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3685] exit_group(0) = ?
[pid 3685] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3685, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3686 attached
, child_tidptr=0x5555564055d0) = 3686
[pid 3686] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3686] setpgid(0, 0) = 0
[pid 3686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3686] write(3, "1000", 4) = 4
[pid 3686] close(3) = 0
[pid 3686] memfd_create("syzkaller", 0) = 3
[pid 3686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3686] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3686] munmap(0x7fe546800000, 2097152) = 0
[pid 3686] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3686] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3686] ioctl(4, LOOP_CLR_FD) = 0
[ 63.981904][ T3685] syz-executor687 (3685): drop_caches: 1
[ 64.018316][ T3685] syz-executor687 (3685): drop_caches: 1
[pid 3686] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3686] close(4) = 0
[pid 3686] close(3) = 0
[pid 3686] creat("./file1", 000) = 3
[pid 3686] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3686] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3686] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3686] exit_group(0) = ?
[pid 3686] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3686, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3687 attached
, child_tidptr=0x5555564055d0) = 3687
[pid 3687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3687] setpgid(0, 0) = 0
[pid 3687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3687] write(3, "1000", 4) = 4
[pid 3687] close(3) = 0
[pid 3687] memfd_create("syzkaller", 0) = 3
[pid 3687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3687] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3687] munmap(0x7fe546800000, 2097152) = 0
[pid 3687] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.112328][ T3686] syz-executor687 (3686): drop_caches: 1
[ 64.151657][ T3686] syz-executor687 (3686): drop_caches: 1
[pid 3687] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3687] ioctl(4, LOOP_CLR_FD) = 0
[pid 3687] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3687] close(4) = 0
[pid 3687] close(3) = 0
[pid 3687] creat("./file1", 000) = 3
[pid 3687] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3687] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3687] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3687] exit_group(0) = ?
[pid 3687] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3687, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3688 attached
, child_tidptr=0x5555564055d0) = 3688
[pid 3688] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3688] setpgid(0, 0) = 0
[pid 3688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3688] write(3, "1000", 4) = 4
[pid 3688] close(3) = 0
[pid 3688] memfd_create("syzkaller", 0) = 3
[pid 3688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3688] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3688] munmap(0x7fe546800000, 2097152) = 0
[pid 3688] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.242261][ T3687] syz-executor687 (3687): drop_caches: 1
[ 64.281665][ T3687] syz-executor687 (3687): drop_caches: 1
[pid 3688] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3688] ioctl(4, LOOP_CLR_FD) = 0
[pid 3688] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3688] close(4) = 0
[pid 3688] close(3) = 0
[pid 3688] creat("./file1", 000) = 3
[pid 3688] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3688] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3688] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3688] exit_group(0) = ?
[pid 3688] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3688, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3689
./strace-static-x86_64: Process 3689 attached
[pid 3689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3689] setpgid(0, 0) = 0
[pid 3689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3689] write(3, "1000", 4) = 4
[pid 3689] close(3) = 0
[pid 3689] memfd_create("syzkaller", 0) = 3
[pid 3689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3689] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3689] munmap(0x7fe546800000, 2097152) = 0
[pid 3689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3689] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3689] ioctl(4, LOOP_CLR_FD) = 0
[ 64.383433][ T3688] syz-executor687 (3688): drop_caches: 1
[ 64.421728][ T3688] syz-executor687 (3688): drop_caches: 1
[pid 3689] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3689] close(4) = 0
[pid 3689] close(3) = 0
[pid 3689] creat("./file1", 000) = 3
[pid 3689] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3689] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3689] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3689] exit_group(0) = ?
[pid 3689] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3689, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3690
./strace-static-x86_64: Process 3690 attached
[pid 3690] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3690] setpgid(0, 0) = 0
[pid 3690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3690] write(3, "1000", 4) = 4
[pid 3690] close(3) = 0
[pid 3690] memfd_create("syzkaller", 0) = 3
[pid 3690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3690] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3690] munmap(0x7fe546800000, 2097152) = 0
[pid 3690] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3690] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3690] ioctl(4, LOOP_CLR_FD) = 0
[pid 3690] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 64.516346][ T3689] syz-executor687 (3689): drop_caches: 1
[ 64.553354][ T3689] syz-executor687 (3689): drop_caches: 1
[pid 3690] close(4) = 0
[pid 3690] close(3) = 0
[pid 3690] creat("./file1", 000) = 3
[pid 3690] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3690] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3690] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3690] exit_group(0) = ?
[pid 3690] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3690, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3691
./strace-static-x86_64: Process 3691 attached
[pid 3691] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3691] setpgid(0, 0) = 0
[pid 3691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3691] write(3, "1000", 4) = 4
[pid 3691] close(3) = 0
[pid 3691] memfd_create("syzkaller", 0) = 3
[pid 3691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3691] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 64.646299][ T3690] syz-executor687 (3690): drop_caches: 1
[ 64.685373][ T3690] syz-executor687 (3690): drop_caches: 1
[pid 3691] munmap(0x7fe546800000, 2097152) = 0
[pid 3691] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3691] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3691] ioctl(4, LOOP_CLR_FD) = 0
[pid 3691] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3691] close(4) = 0
[pid 3691] close(3) = 0
[pid 3691] creat("./file1", 000) = 3
[pid 3691] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3691] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3691] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3691] exit_group(0) = ?
[pid 3691] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3691, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3692
./strace-static-x86_64: Process 3692 attached
[pid 3692] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3692] setpgid(0, 0) = 0
[pid 3692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3692] write(3, "1000", 4) = 4
[pid 3692] close(3) = 0
[pid 3692] memfd_create("syzkaller", 0) = 3
[pid 3692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3692] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3692] munmap(0x7fe546800000, 2097152) = 0
[pid 3692] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.778640][ T3691] syz-executor687 (3691): drop_caches: 1
[ 64.818096][ T3691] syz-executor687 (3691): drop_caches: 1
[pid 3692] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3692] ioctl(4, LOOP_CLR_FD) = 0
[pid 3692] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3692] close(4) = 0
[pid 3692] close(3) = 0
[pid 3692] creat("./file1", 000) = 3
[pid 3692] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3692] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3692] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3692] exit_group(0) = ?
[pid 3692] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3692, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3693 attached
, child_tidptr=0x5555564055d0) = 3693
[pid 3693] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3693] setpgid(0, 0) = 0
[pid 3693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3693] write(3, "1000", 4) = 4
[pid 3693] close(3) = 0
[pid 3693] memfd_create("syzkaller", 0) = 3
[pid 3693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3693] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3693] munmap(0x7fe546800000, 2097152) = 0
[pid 3693] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 64.914634][ T3692] syz-executor687 (3692): drop_caches: 1
[ 64.952177][ T3692] syz-executor687 (3692): drop_caches: 1
[pid 3693] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3693] ioctl(4, LOOP_CLR_FD) = 0
[pid 3693] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3693] close(4) = 0
[pid 3693] close(3) = 0
[pid 3693] creat("./file1", 000) = 3
[pid 3693] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3693] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3693] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3693] exit_group(0) = ?
[pid 3693] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3693, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3694
./strace-static-x86_64: Process 3694 attached
[pid 3694] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3694] setpgid(0, 0) = 0
[pid 3694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3694] write(3, "1000", 4) = 4
[pid 3694] close(3) = 0
[pid 3694] memfd_create("syzkaller", 0) = 3
[pid 3694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3694] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3694] munmap(0x7fe546800000, 2097152) = 0
[pid 3694] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3694] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3694] ioctl(4, LOOP_CLR_FD) = 0
[pid 3694] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.054529][ T3693] syz-executor687 (3693): drop_caches: 1
[ 65.092675][ T3693] syz-executor687 (3693): drop_caches: 1
[pid 3694] close(4) = 0
[pid 3694] close(3) = 0
[pid 3694] creat("./file1", 000) = 3
[pid 3694] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3694] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3694] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3694] exit_group(0) = ?
[pid 3694] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3694, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3695 attached
, child_tidptr=0x5555564055d0) = 3695
[pid 3695] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3695] setpgid(0, 0) = 0
[pid 3695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3695] write(3, "1000", 4) = 4
[pid 3695] close(3) = 0
[pid 3695] memfd_create("syzkaller", 0) = 3
[pid 3695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3695] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3695] munmap(0x7fe546800000, 2097152) = 0
[pid 3695] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3695] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3695] ioctl(4, LOOP_CLR_FD) = 0
[pid 3695] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.179250][ T3694] syz-executor687 (3694): drop_caches: 1
[ 65.215748][ T3694] syz-executor687 (3694): drop_caches: 1
[pid 3695] close(4) = 0
[pid 3695] close(3) = 0
[pid 3695] creat("./file1", 000) = 3
[pid 3695] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3695] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3695] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3695] exit_group(0) = ?
[pid 3695] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3695, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3696
./strace-static-x86_64: Process 3696 attached
[pid 3696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3696] setpgid(0, 0) = 0
[pid 3696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3696] write(3, "1000", 4) = 4
[pid 3696] close(3) = 0
[pid 3696] memfd_create("syzkaller", 0) = 3
[pid 3696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3696] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3696] munmap(0x7fe546800000, 2097152) = 0
[ 65.310408][ T3695] syz-executor687 (3695): drop_caches: 1
[ 65.349524][ T3695] syz-executor687 (3695): drop_caches: 1
[pid 3696] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3696] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3696] ioctl(4, LOOP_CLR_FD) = 0
[pid 3696] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3696] close(4) = 0
[pid 3696] close(3) = 0
[pid 3696] creat("./file1", 000) = 3
[pid 3696] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3696] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3696] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3696] exit_group(0) = ?
[pid 3696] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3696, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3697
./strace-static-x86_64: Process 3697 attached
[pid 3697] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3697] setpgid(0, 0) = 0
[pid 3697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3697] write(3, "1000", 4) = 4
[pid 3697] close(3) = 0
[pid 3697] memfd_create("syzkaller", 0) = 3
[pid 3697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3697] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3697] munmap(0x7fe546800000, 2097152) = 0
[pid 3697] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3697] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3697] ioctl(4, LOOP_CLR_FD) = 0
[pid 3697] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.447770][ T3696] syz-executor687 (3696): drop_caches: 1
[ 65.484190][ T3696] syz-executor687 (3696): drop_caches: 1
[pid 3697] close(4) = 0
[pid 3697] close(3) = 0
[pid 3697] creat("./file1", 000) = 3
[pid 3697] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3697] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3697] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3697] exit_group(0) = ?
[pid 3697] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3697, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3698 attached
, child_tidptr=0x5555564055d0) = 3698
[pid 3698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3698] setpgid(0, 0) = 0
[pid 3698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3698] write(3, "1000", 4) = 4
[pid 3698] close(3) = 0
[pid 3698] memfd_create("syzkaller", 0) = 3
[pid 3698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3698] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3698] munmap(0x7fe546800000, 2097152) = 0
[pid 3698] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3698] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.577457][ T3697] syz-executor687 (3697): drop_caches: 1
[ 65.614382][ T3697] syz-executor687 (3697): drop_caches: 1
[pid 3698] ioctl(4, LOOP_CLR_FD) = 0
[pid 3698] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3698] close(4) = 0
[pid 3698] close(3) = 0
[pid 3698] creat("./file1", 000) = 3
[pid 3698] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3698] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3698] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3698] exit_group(0) = ?
[pid 3698] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3698, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3699
./strace-static-x86_64: Process 3699 attached
[pid 3699] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3699] setpgid(0, 0) = 0
[pid 3699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3699] write(3, "1000", 4) = 4
[pid 3699] close(3) = 0
[pid 3699] memfd_create("syzkaller", 0) = 3
[pid 3699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3699] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3699] munmap(0x7fe546800000, 2097152) = 0
[pid 3699] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3699] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3699] ioctl(4, LOOP_CLR_FD) = 0
[pid 3699] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.720417][ T3698] syz-executor687 (3698): drop_caches: 1
[ 65.758450][ T3698] syz-executor687 (3698): drop_caches: 1
[pid 3699] close(4) = 0
[pid 3699] close(3) = 0
[pid 3699] creat("./file1", 000) = 3
[pid 3699] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3699] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3699] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3699] exit_group(0) = ?
[pid 3699] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3699, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3700
./strace-static-x86_64: Process 3700 attached
[pid 3700] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3700] setpgid(0, 0) = 0
[pid 3700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3700] write(3, "1000", 4) = 4
[pid 3700] close(3) = 0
[pid 3700] memfd_create("syzkaller", 0) = 3
[pid 3700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3700] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 65.846705][ T3699] syz-executor687 (3699): drop_caches: 1
[ 65.886178][ T3699] syz-executor687 (3699): drop_caches: 1
[pid 3700] munmap(0x7fe546800000, 2097152) = 0
[pid 3700] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3700] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3700] ioctl(4, LOOP_CLR_FD) = 0
[pid 3700] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3700] close(4) = 0
[pid 3700] close(3) = 0
[pid 3700] creat("./file1", 000) = 3
[pid 3700] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3700] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3700] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3700] exit_group(0) = ?
[pid 3700] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3700, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3701
./strace-static-x86_64: Process 3701 attached
[pid 3701] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3701] setpgid(0, 0) = 0
[pid 3701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3701] write(3, "1000", 4) = 4
[pid 3701] close(3) = 0
[pid 3701] memfd_create("syzkaller", 0) = 3
[pid 3701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3701] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3701] munmap(0x7fe546800000, 2097152) = 0
[pid 3701] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3701] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3701] ioctl(4, LOOP_CLR_FD) = 0
[pid 3701] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 65.991661][ T3700] syz-executor687 (3700): drop_caches: 1
[ 66.027869][ T3700] syz-executor687 (3700): drop_caches: 1
[pid 3701] close(4) = 0
[pid 3701] close(3) = 0
[pid 3701] creat("./file1", 000) = 3
[pid 3701] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3701] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3701] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3701] exit_group(0) = ?
[pid 3701] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3701, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3702 attached
, child_tidptr=0x5555564055d0) = 3702
[pid 3702] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3702] setpgid(0, 0) = 0
[pid 3702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3702] write(3, "1000", 4) = 4
[pid 3702] close(3) = 0
[pid 3702] memfd_create("syzkaller", 0) = 3
[pid 3702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3702] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3702] munmap(0x7fe546800000, 2097152) = 0
[pid 3702] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[ 66.119862][ T3701] syz-executor687 (3701): drop_caches: 1
[ 66.156552][ T3701] syz-executor687 (3701): drop_caches: 1
[pid 3702] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3702] ioctl(4, LOOP_CLR_FD) = 0
[pid 3702] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3702] close(4) = 0
[pid 3702] close(3) = 0
[pid 3702] creat("./file1", 000) = 3
[pid 3702] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3702] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3702] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3702] exit_group(0) = ?
[pid 3702] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3702, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3703
./strace-static-x86_64: Process 3703 attached
[pid 3703] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3703] setpgid(0, 0) = 0
[pid 3703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3703] write(3, "1000", 4) = 4
[pid 3703] close(3) = 0
[pid 3703] memfd_create("syzkaller", 0) = 3
[pid 3703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3703] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3703] munmap(0x7fe546800000, 2097152) = 0
[pid 3703] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3703] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3703] ioctl(4, LOOP_CLR_FD) = 0
[ 66.260839][ T3702] syz-executor687 (3702): drop_caches: 1
[ 66.299751][ T3702] syz-executor687 (3702): drop_caches: 1
[pid 3703] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3703] close(4) = 0
[pid 3703] close(3) = 0
[pid 3703] creat("./file1", 000) = 3
[pid 3703] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3703] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3703] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3703] exit_group(0) = ?
[pid 3703] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3703, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3704
./strace-static-x86_64: Process 3704 attached
[pid 3704] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3704] setpgid(0, 0) = 0
[pid 3704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3704] write(3, "1000", 4) = 4
[pid 3704] close(3) = 0
[pid 3704] memfd_create("syzkaller", 0) = 3
[pid 3704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3704] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3704] munmap(0x7fe546800000, 2097152) = 0
[pid 3704] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3704] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3704] ioctl(4, LOOP_CLR_FD) = 0
[pid 3704] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3704] close(4) = 0
[ 66.389134][ T3703] syz-executor687 (3703): drop_caches: 1
[ 66.426246][ T3703] syz-executor687 (3703): drop_caches: 1
[pid 3704] close(3) = 0
[pid 3704] creat("./file1", 000) = 3
[pid 3704] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3704] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3704] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3704] exit_group(0) = ?
[pid 3704] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3704, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3705
./strace-static-x86_64: Process 3705 attached
[pid 3705] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3705] setpgid(0, 0) = 0
[pid 3705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3705] write(3, "1000", 4) = 4
[pid 3705] close(3) = 0
[pid 3705] memfd_create("syzkaller", 0) = 3
[pid 3705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3705] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3705] munmap(0x7fe546800000, 2097152) = 0
[pid 3705] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3705] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3705] ioctl(4, LOOP_CLR_FD) = 0
[ 66.514337][ T3704] syz-executor687 (3704): drop_caches: 1
[ 66.552625][ T3704] syz-executor687 (3704): drop_caches: 1
[pid 3705] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3705] close(4) = 0
[pid 3705] close(3) = 0
[pid 3705] creat("./file1", 000) = 3
[pid 3705] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3705] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3705] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3705] exit_group(0) = ?
[pid 3705] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3705, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3706
./strace-static-x86_64: Process 3706 attached
[pid 3706] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3706] setpgid(0, 0) = 0
[pid 3706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3706] write(3, "1000", 4) = 4
[pid 3706] close(3) = 0
[pid 3706] memfd_create("syzkaller", 0) = 3
[pid 3706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3706] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3706] munmap(0x7fe546800000, 2097152) = 0
[pid 3706] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3706] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3706] ioctl(4, LOOP_CLR_FD) = 0
[pid 3706] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3706] close(4) = 0
[ 66.643048][ T3705] syz-executor687 (3705): drop_caches: 1
[ 66.679803][ T3705] syz-executor687 (3705): drop_caches: 1
[pid 3706] close(3) = 0
[pid 3706] creat("./file1", 000) = 3
[pid 3706] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3706] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3706] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3706] exit_group(0) = ?
[pid 3706] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3706, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3707 attached
, child_tidptr=0x5555564055d0) = 3707
[pid 3707] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3707] setpgid(0, 0) = 0
[pid 3707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3707] write(3, "1000", 4) = 4
[pid 3707] close(3) = 0
[pid 3707] memfd_create("syzkaller", 0) = 3
[pid 3707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3707] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3707] munmap(0x7fe546800000, 2097152) = 0
[ 66.765757][ T3706] syz-executor687 (3706): drop_caches: 1
[ 66.805625][ T3706] syz-executor687 (3706): drop_caches: 1
[pid 3707] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3707] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3707] ioctl(4, LOOP_CLR_FD) = 0
[pid 3707] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3707] close(4) = 0
[pid 3707] close(3) = 0
[pid 3707] creat("./file1", 000) = 3
[pid 3707] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3707] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3707] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3707] exit_group(0) = ?
[pid 3707] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3707, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3708 attached
, child_tidptr=0x5555564055d0) = 3708
[pid 3708] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3708] setpgid(0, 0) = 0
[pid 3708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3708] write(3, "1000", 4) = 4
[pid 3708] close(3) = 0
[pid 3708] memfd_create("syzkaller", 0) = 3
[pid 3708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3708] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3708] munmap(0x7fe546800000, 2097152) = 0
[pid 3708] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3708] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3708] ioctl(4, LOOP_CLR_FD) = 0
[ 66.909488][ T3707] syz-executor687 (3707): drop_caches: 1
[ 66.946819][ T3707] syz-executor687 (3707): drop_caches: 1
[pid 3708] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3708] close(4) = 0
[pid 3708] close(3) = 0
[pid 3708] creat("./file1", 000) = 3
[pid 3708] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3708] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3708] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3708] exit_group(0) = ?
[pid 3708] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3708, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3709
./strace-static-x86_64: Process 3709 attached
[pid 3709] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3709] setpgid(0, 0) = 0
[pid 3709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3709] write(3, "1000", 4) = 4
[pid 3709] close(3) = 0
[pid 3709] memfd_create("syzkaller", 0) = 3
[pid 3709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3709] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3709] munmap(0x7fe546800000, 2097152) = 0
[pid 3709] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3709] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3709] ioctl(4, LOOP_CLR_FD) = 0
[pid 3709] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3709] close(4) = 0
[ 67.040048][ T3708] syz-executor687 (3708): drop_caches: 1
[ 67.077873][ T3708] syz-executor687 (3708): drop_caches: 1
[pid 3709] close(3) = 0
[pid 3709] creat("./file1", 000) = 3
[pid 3709] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3709] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3709] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3709] exit_group(0) = ?
[pid 3709] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3709, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3710
./strace-static-x86_64: Process 3710 attached
[pid 3710] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3710] setpgid(0, 0) = 0
[pid 3710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3710] write(3, "1000", 4) = 4
[pid 3710] close(3) = 0
[pid 3710] memfd_create("syzkaller", 0) = 3
[pid 3710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3710] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3710] munmap(0x7fe546800000, 2097152) = 0
[pid 3710] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3710] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3710] ioctl(4, LOOP_CLR_FD) = 0
[pid 3710] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3710] close(4) = 0
[ 67.163983][ T3709] syz-executor687 (3709): drop_caches: 1
[ 67.200641][ T3709] syz-executor687 (3709): drop_caches: 1
[pid 3710] close(3) = 0
[pid 3710] creat("./file1", 000) = 3
[pid 3710] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3710] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 67.290696][ T3710] syz-executor687 (3710): drop_caches: 1
[pid 3710] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3710] exit_group(0) = ?
[pid 3710] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3710, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3711 attached
, child_tidptr=0x5555564055d0) = 3711
[pid 3711] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3711] setpgid(0, 0) = 0
[pid 3711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3711] write(3, "1000", 4) = 4
[pid 3711] close(3) = 0
[pid 3711] memfd_create("syzkaller", 0) = 3
[pid 3711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3711] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3711] munmap(0x7fe546800000, 2097152) = 0
[pid 3711] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3711] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3711] ioctl(4, LOOP_CLR_FD) = 0
[pid 3711] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3711] close(4) = 0
[ 67.331260][ T3710] syz-executor687 (3710): drop_caches: 1
[pid 3711] close(3) = 0
[pid 3711] creat("./file1", 000) = 3
[pid 3711] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3711] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3711] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3711] exit_group(0) = ?
[pid 3711] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3711, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3712
./strace-static-x86_64: Process 3712 attached
[pid 3712] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3712] setpgid(0, 0) = 0
[pid 3712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3712] write(3, "1000", 4) = 4
[pid 3712] close(3) = 0
[pid 3712] memfd_create("syzkaller", 0) = 3
[pid 3712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3712] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3712] munmap(0x7fe546800000, 2097152) = 0
[pid 3712] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3712] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3712] ioctl(4, LOOP_CLR_FD) = 0
[pid 3712] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3712] close(4) = 0
[ 67.432932][ T3711] syz-executor687 (3711): drop_caches: 1
[ 67.469298][ T3711] syz-executor687 (3711): drop_caches: 1
[pid 3712] close(3) = 0
[pid 3712] creat("./file1", 000) = 3
[pid 3712] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3712] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 67.557140][ T3712] syz-executor687 (3712): drop_caches: 1
[pid 3712] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3712] exit_group(0) = ?
[pid 3712] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3712, si_uid=0, si_status=0, si_utime=0, si_stime=10} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3713
./strace-static-x86_64: Process 3713 attached
[pid 3713] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3713] setpgid(0, 0) = 0
[pid 3713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3713] write(3, "1000", 4) = 4
[pid 3713] close(3) = 0
[pid 3713] memfd_create("syzkaller", 0) = 3
[pid 3713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3713] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3713] munmap(0x7fe546800000, 2097152) = 0
[pid 3713] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3713] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3713] ioctl(4, LOOP_CLR_FD) = 0
[pid 3713] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3713] close(4) = 0
[pid 3713] close(3) = 0
[pid 3713] creat("./file1", 000) = 3
[pid 3713] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3713] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 67.597269][ T3712] syz-executor687 (3712): drop_caches: 1
[pid 3713] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3713] exit_group(0) = ?
[pid 3713] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3713, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3714
./strace-static-x86_64: Process 3714 attached
[pid 3714] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3714] setpgid(0, 0) = 0
[pid 3714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3714] write(3, "1000", 4) = 4
[pid 3714] close(3) = 0
[pid 3714] memfd_create("syzkaller", 0) = 3
[pid 3714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3714] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3714] munmap(0x7fe546800000, 2097152) = 0
[pid 3714] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3714] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3714] ioctl(4, LOOP_CLR_FD) = 0
[pid 3714] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3714] close(4) = 0
[ 67.683895][ T3713] syz-executor687 (3713): drop_caches: 1
[ 67.719871][ T3713] syz-executor687 (3713): drop_caches: 1
[pid 3714] close(3) = 0
[pid 3714] creat("./file1", 000) = 3
[pid 3714] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3714] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3714] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3714] exit_group(0) = ?
[pid 3714] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3714, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3715 attached
, child_tidptr=0x5555564055d0) = 3715
[pid 3715] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3715] setpgid(0, 0) = 0
[pid 3715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3715] write(3, "1000", 4) = 4
[pid 3715] close(3) = 0
[pid 3715] memfd_create("syzkaller", 0) = 3
[pid 3715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3715] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3715] munmap(0x7fe546800000, 2097152) = 0
[pid 3715] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3715] ioctl(4, LOOP_CLR_FD) = 0
[ 67.805943][ T3714] syz-executor687 (3714): drop_caches: 1
[ 67.843840][ T3714] syz-executor687 (3714): drop_caches: 1
[pid 3715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3715] close(4) = 0
[pid 3715] close(3) = 0
[pid 3715] creat("./file1", 000) = 3
[pid 3715] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3715] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 67.938604][ T3715] syz-executor687 (3715): drop_caches: 1
[pid 3715] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3715] exit_group(0) = ?
[pid 3715] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3715, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3716
./strace-static-x86_64: Process 3716 attached
[pid 3716] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3716] setpgid(0, 0) = 0
[pid 3716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3716] write(3, "1000", 4) = 4
[pid 3716] close(3) = 0
[pid 3716] memfd_create("syzkaller", 0) = 3
[pid 3716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3716] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3716] munmap(0x7fe546800000, 2097152) = 0
[pid 3716] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3716] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3716] ioctl(4, LOOP_CLR_FD) = 0
[pid 3716] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3716] close(4) = 0
[pid 3716] close(3) = 0
[pid 3716] creat("./file1", 000) = 3
[pid 3716] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3716] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[ 67.979055][ T3715] syz-executor687 (3715): drop_caches: 1
[pid 3716] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3716] exit_group(0) = ?
[pid 3716] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3716, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3717
./strace-static-x86_64: Process 3717 attached
[pid 3717] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3717] setpgid(0, 0) = 0
[pid 3717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3717] write(3, "1000", 4) = 4
[pid 3717] close(3) = 0
[pid 3717] memfd_create("syzkaller", 0) = 3
[pid 3717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3717] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3717] munmap(0x7fe546800000, 2097152) = 0
[pid 3717] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3717] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3717] ioctl(4, LOOP_CLR_FD) = 0
[pid 3717] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3717] close(4) = 0
[ 68.068755][ T3716] syz-executor687 (3716): drop_caches: 1
[ 68.105915][ T3716] syz-executor687 (3716): drop_caches: 1
[pid 3717] close(3) = 0
[pid 3717] creat("./file1", 000) = 3
[pid 3717] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3717] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3717] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3717] exit_group(0) = ?
[pid 3717] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3717, si_uid=0, si_status=0, si_utime=0, si_stime=9} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3718
./strace-static-x86_64: Process 3718 attached
[pid 3718] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3718] setpgid(0, 0) = 0
[pid 3718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3718] write(3, "1000", 4) = 4
[pid 3718] close(3) = 0
[pid 3718] memfd_create("syzkaller", 0) = 3
[pid 3718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3718] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3718] munmap(0x7fe546800000, 2097152) = 0
[pid 3718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3718] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3718] ioctl(4, LOOP_CLR_FD) = 0
[pid 3718] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 68.194779][ T3717] syz-executor687 (3717): drop_caches: 1
[ 68.231787][ T3717] syz-executor687 (3717): drop_caches: 1
[pid 3718] close(4) = 0
[pid 3718] close(3) = 0
[pid 3718] creat("./file1", 000) = 3
[pid 3718] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3718] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3718] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3718] exit_group(0) = ?
[pid 3718] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3718, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3719 attached
, child_tidptr=0x5555564055d0) = 3719
[pid 3719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3719] setpgid(0, 0) = 0
[pid 3719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3719] write(3, "1000", 4) = 4
[pid 3719] close(3) = 0
[pid 3719] memfd_create("syzkaller", 0) = 3
[pid 3719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3719] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[ 68.323225][ T3718] syz-executor687 (3718): drop_caches: 1
[ 68.361752][ T3718] syz-executor687 (3718): drop_caches: 1
[pid 3719] munmap(0x7fe546800000, 2097152) = 0
[pid 3719] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3719] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3719] ioctl(4, LOOP_CLR_FD) = 0
[pid 3719] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3719] close(4) = 0
[pid 3719] close(3) = 0
[pid 3719] creat("./file1", 000) = 3
[pid 3719] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3719] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3719] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3719] exit_group(0) = ?
[pid 3719] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3719, si_uid=0, si_status=0, si_utime=0, si_stime=8} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3720
./strace-static-x86_64: Process 3720 attached
[pid 3720] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3720] setpgid(0, 0) = 0
[pid 3720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3720] write(3, "1000", 4) = 4
[pid 3720] close(3) = 0
[pid 3720] memfd_create("syzkaller", 0) = 3
[pid 3720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3720] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3720] munmap(0x7fe546800000, 2097152) = 0
[pid 3720] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3720] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3720] ioctl(4, LOOP_CLR_FD) = 0
[ 68.467139][ T3719] syz-executor687 (3719): drop_caches: 1
[ 68.506538][ T3719] syz-executor687 (3719): drop_caches: 1
[pid 3720] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3720] close(4) = 0
[pid 3720] close(3) = 0
[pid 3720] creat("./file1", 000) = 3
[pid 3720] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3720] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3720] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3720] exit_group(0) = ?
[pid 3720] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3720, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0
close(3) = 0
clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555564055d0) = 3721
./strace-static-x86_64: Process 3721 attached
[pid 3721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0
[pid 3721] setpgid(0, 0) = 0
[pid 3721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3
[pid 3721] write(3, "1000", 4) = 4
[pid 3721] close(3) = 0
[pid 3721] memfd_create("syzkaller", 0) = 3
[pid 3721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe546800000
[pid 3721] write(3, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x04\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x07\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\xff\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\x01\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152
[pid 3721] munmap(0x7fe546800000, 2097152) = 0
[pid 3721] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4
[pid 3721] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[pid 3721] ioctl(4, LOOP_CLR_FD) = 0
[pid 3721] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy)
[ 68.593615][ T3720] syz-executor687 (3720): drop_caches: 1
[ 68.630083][ T3720] syz-executor687 (3720): drop_caches: 1
[pid 3721] close(4) = 0
[pid 3721] close(3) = 0
[pid 3721] creat("./file1", 000) = 3
[pid 3721] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 4
[pid 3721] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 5
[pid 3721] sendfile(5, 4, [88] => [671], 2160) = 583
[pid 3721] exit_group(0) = ?
[pid 3721] +++ exited with 0 +++
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3721, si_uid=0, si_status=0, si_utime=0, si_stime=7} ---
restart_syscall(<... resuming interrupted clone ...>) = 0
openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3
ioctl(3, LOOP_CLR_FD) = 0