./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1615347114 <...> Warning: Permanently added '10.128.1.220' (ECDSA) to the list of known hosts. execve("./syz-executor1615347114", ["./syz-executor1615347114"], 0x7ffdc8ccf830 /* 10 vars */) = 0 brk(NULL) = 0x555555923000 brk(0x555555923c40) = 0x555555923c40 arch_prctl(ARCH_SET_FS, 0x555555923300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1615347114", 4096) = 28 brk(0x555555944c40) = 0x555555944c40 brk(0x555555945000) = 0x555555945000 mprotect(0x7f010df63000, 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./strace-static-x86_64: Process 5083 attached , child_tidptr=0x5555559235d0) = 5083 [pid 5083] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5083] setsid() = 1 [pid 5083] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5083] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5083] unshare(CLONE_NEWNS) = 0 [pid 5083] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5083] unshare(CLONE_NEWIPC) = 0 [pid 5083] unshare(CLONE_NEWCGROUP) = 0 [pid 5083] unshare(CLONE_NEWUTS) = 0 [pid 5083] unshare(CLONE_SYSVSEM) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "16777216", 8) = 8 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "536870912", 9) = 9 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "8192", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024", 4) = 4 [pid 5083] close(3) = 0 [pid 5083] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5083] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5083] close(3) = 0 [pid 5083] getpid() = 1 [pid 5083] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<nohomeok > 0) [ 59.916426][ T105] ------------[ cut here ]------------ [ 59.922060][ T105] kernel BUG at fs/jfs/jfs_txnmgr.c:926! [ 59.929495][ T105] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 59.935622][ T105] CPU: 1 PID: 105 Comm: jfsCommit Not tainted 6.2.0-next-20230303-syzkaller #0 [ 59.944562][ T105] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/16/2023 [ 59.954631][ T105] RIP: 0010:txUnlock+0xc62/0xcc0 [ 59.959805][ T105] Code: fe e9 e2 f6 ff ff e8 ad d5 91 fe 48 c7 c1 00 a4 89 8a ba 9e 03 00 00 48 c7 c6 80 a3 89 8a 48 c7 c7 c0 a3 89 8a e8 1e 98 75 fe <0f> 0b e8 57 40 e4 fe e9 39 f6 ff ff e8 7d d5 91 fe 48 c7 c1 40 a3 [ 59.979773][ T105] RSP: 0018:ffffc90002d3fd80 EFLAGS: 00010286 [ 59.985846][ T105] RAX: 0000000000000037 RBX: ffffc900028a2090 RCX: 0000000000000000 [ 59.993819][ T105] RDX: 0000000000000000 RSI: ffffffff81690f6c RDI: 0000000000000005 [ 60.001804][ T105] RBP: ffff88802a5a6d90 R08: 0000000000000005 R09: 0000000000000000 [ 60.009792][ T105] R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.017768][ T105] R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 [ 60.025828][ T105] FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 60.034762][ T105] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.041721][ T105] CR2: 000056517926daa8 CR3: 000000001d794000 CR4: 00000000003506e0 [ 60.049703][ T105] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.057791][ T105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.066048][ T105] Call Trace: [ 60.069336][ T105] [ 60.072305][ T105] jfs_lazycommit+0x714/0xb10 [ 60.077018][ T105] ? txCommit+0x46e0/0x46e0 [ 60.081534][ T105] ? wake_up_q+0xf0/0xf0 [ 60.086080][ T105] ? __kthread_parkme+0x163/0x220 [ 60.091110][ T105] ? txCommit+0x46e0/0x46e0 [ 60.095631][ T105] kthread+0x2e8/0x3a0 [ 60.099709][ T105] ? kthread_complete_and_exit+0x40/0x40 [ 60.105350][ T105] ret_from_fork+0x1f/0x30 [ 60.109874][ T105] [ 60.112894][ T105] Modules linked in: [ 60.117211][ T105] ---[ end trace 0000000000000000 ]--- [ 60.122956][ T105] RIP: 0010:txUnlock+0xc62/0xcc0 [ 60.127948][ T105] Code: fe e9 e2 f6 ff ff e8 ad d5 91 fe 48 c7 c1 00 a4 89 8a ba 9e 03 00 00 48 c7 c6 80 a3 89 8a 48 c7 c7 c0 a3 89 8a e8 1e 98 75 fe <0f> 0b e8 57 40 e4 fe e9 39 f6 ff ff e8 7d d5 91 fe 48 c7 c1 40 a3 [ 60.148099][ T105] RSP: 0018:ffffc90002d3fd80 EFLAGS: 00010286 [ 60.154304][ T105] RAX: 0000000000000037 RBX: ffffc900028a2090 RCX: 0000000000000000 [ 60.162357][ T105] RDX: 0000000000000000 RSI: ffffffff81690f6c RDI: 0000000000000005 [ 60.170713][ T105] RBP: ffff88802a5a6d90 R08: 0000000000000005 R09: 0000000000000000 [ 60.178815][ T105] R10: 0000000080000000 R11: 0000000000000000 R12: 0000000000000000 [ 60.187301][ T105] R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 [ 60.195452][ T105] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 60.204709][ T105] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 60.211753][ T105] CR2: 00007f010df67140 CR3: 000000001de3e000 CR4: 00000000003506f0 [ 60.220254][ T105] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 60.228453][ T105] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 60.236781][ T105] Kernel panic - not syncing: Fatal exception [ 60.243145][ T105] Kernel Offset: disabled [ 60.247475][ T105] Rebooting in 86400 seconds..