./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1461037486 <...> Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. execve("./syz-executor1461037486", ["./syz-executor1461037486"], 0x7fffa2cf70b0 /* 10 vars */) = 0 brk(NULL) = 0x555556c8a000 brk(0x555556c8ac40) = 0x555556c8ac40 arch_prctl(ARCH_SET_FS, 0x555556c8a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1461037486", 4096) = 28 brk(0x555556cabc40) = 0x555556cabc40 brk(0x555556cac000) = 0x555556cac000 mprotect(0x7f76ff7e5000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556c8a5d0) = 3609 ./strace-static-x86_64: Process 3609 attached [pid 3609] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setsid() = 1 [pid 3609] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 3609] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3609] unshare(CLONE_NEWNS) = 0 [pid 3609] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3609] unshare(CLONE_NEWIPC) = 0 [pid 3609] unshare(CLONE_NEWCGROUP) = 0 [pid 3609] unshare(CLONE_NEWUTS) = 0 [pid 3609] unshare(CLONE_SYSVSEM) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "16777216", 8) = 8 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "536870912", 9) = 9 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "8192", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3609] close(3) = 0 [pid 3609] getpid() = 1 [pid 3609] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 40.752724][ T122] dump_stack_lvl+0xcd/0x134 [ 40.757316][ T122] ubsan_epilogue+0xb/0x50 [ 40.761742][ T122] __ubsan_handle_divrem_overflow.cold-0xa/0xf1 [ 40.767977][ T122] ? lock_metapage+0xad/0x4d0 [ 40.772661][ T122] dbAdjTree+0x34c/0x360 [ 40.776895][ T122] ? folio_flags.constprop.0+0x53/0x150 [ 40.782427][ T122] dbJoin+0x1f0/0x240 [ 40.786400][ T122] dbFreeBits+0x15d/0x8c0 [ 40.790753][ T122] dbFreeDmap+0x61/0x1a0 [ 40.794986][ T122] dbFree+0x250/0x540 [ 40.798963][ T122] txFreeMap+0x8f1/0xd70 [ 40.803192][ T122] txUpdateMap+0x3cd/0xbe0 [ 40.807596][ T122] ? txUpdateMap+0x0/0xbe0 [ 40.812001][ T122] ? _raw_spin_lock_irqsave_nested-0xf/0x60 [ 40.817881][ T122] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 40.823674][ T122] jfs_lazycommit+0x5bb/0xaa0 [ 40.828340][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 40.833002][ T122] ? default_wake_function+0x0/0x50 [ 40.838192][ T122] ? __kthread_parkme+0x15f/0x220 [ 40.843216][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 40.847884][ T122] kthread+0x2e4/0x3a0 [ 40.851941][ T122] ? kthread+0x0/0x3a0 [ 40.856000][ T122] ret_from_fork+0x1f/0x30 [ 40.860413][ T122] [ 40.865012][ T122] ================================================================================ [ 40.874796][ T122] Kernel panic - not syncing: panic_on_warn set ... [ 40.881381][ T122] CPU: 0 PID: 122 Comm: jfsCommit Not tainted 6.1.0-rc1-next-20221021-syzkaller #0 [ 40.890648][ T122] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 [ 40.900686][ T122] Call Trace: [ 40.903957][ T122] [ 40.906876][ T122] dump_stack_lvl+0xcd/0x134 [ 40.911471][ T122] panic+0x2c8/0x622 [ 40.915360][ T122] ? panic+0x0/0x622 [ 40.919314][ T122] ? ubsan_epilogue+0x3e/0x50 [ 40.923984][ T122] __ubsan_handle_builtin_unreachable-0x6/0x35 [ 40.930128][ T122] __ubsan_handle_divrem_overflow.cold-0xa/0xf1 [ 40.936446][ T122] ? lock_metapage+0xad/0x4d0 [ 40.941135][ T122] dbAdjTree+0x34c/0x360 [ 40.945368][ T122] ? folio_flags.constprop.0+0x53/0x150 [ 40.950913][ T122] dbJoin+0x1f0/0x240 [ 40.954891][ T122] dbFreeBits+0x15d/0x8c0 [ 40.959215][ T122] dbFreeDmap+0x61/0x1a0 [ 40.963450][ T122] dbFree+0x250/0x540 [ 40.967433][ T122] txFreeMap+0x8f1/0xd70 [ 40.971664][ T122] txUpdateMap+0x3cd/0xbe0 [ 40.976076][ T122] ? txUpdateMap+0x0/0xbe0 [ 40.980480][ T122] ? _raw_spin_lock_irqsave_nested-0xf/0x60 [ 40.986366][ T122] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 40.992163][ T122] jfs_lazycommit+0x5bb/0xaa0 [ 40.996833][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 41.001510][ T122] ? default_wake_function+0x0/0x50 [ 41.006698][ T122] ? __kthread_parkme+0x15f/0x220 [ 41.011710][ T122] ? jfs_lazycommit+0x0/0xaa0 [ 41.016375][ T122] kthread+0x2e4/0x3a0 [ 41.020428][ T122] ? kthread+0x0/0x3a0 [ 41.024480][ T122] ret_from_fork+0x1f/0x30 [ 41.028887][ T122] [ 41.032075][ T122] Kernel Offset: disabled [ 41.036390][ T122] Rebooting in 86400 seconds..