./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2020953276 <...> Warning: Permanently added '10.128.0.176' (ECDSA) to the list of known hosts. execve("./syz-executor2020953276", ["./syz-executor2020953276"], 0x7fff4ddda750 /* 10 vars */) = 0 brk(NULL) = 0x555555de7000 brk(0x555555de7c40) = 0x555555de7c40 arch_prctl(ARCH_SET_FS, 0x555555de7300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2020953276", 4096) = 28 brk(0x555555e08c40) = 0x555555e08c40 brk(0x555555e09000) = 0x555555e09000 mprotect(0x7f1e8dbfd000, 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 5079 attached , child_tidptr=0x555555de75d0) = 5079 [pid 5079] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setsid() = 1 [pid 5079] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5079] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5079] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5079] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5079] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5079] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5079] unshare(CLONE_NEWNS) = 0 [pid 5079] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5079] unshare(CLONE_NEWIPC) = 0 [pid 5079] unshare(CLONE_NEWCGROUP) = 0 [pid 5079] unshare(CLONE_NEWUTS) = 0 [pid 5079] unshare(CLONE_SYSVSEM) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "16777216", 8) = 8 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "536870912", 9) = 9 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1024", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "8192", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1024", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1024", 4) = 4 [pid 5079] close(3) = 0 [pid 5079] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5079] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5079] close(3) = 0 [pid 5079] getpid() = 1 [pid 5079] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 56 f9 ff ff e8 7c 8d d2 ff e8 57 5b bb ff 31 ff 41 89 c4 [ 62.627979][ T5079] RSP: 0018:ffffc90003defa68 EFLAGS: 00010093 [ 62.634109][ T5079] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 62.642115][ T5079] RDX: ffff8880252aba80 RSI: ffffffff81af46d8 RDI: 0000000000000005 [ 62.650122][ T5079] RBP: ffffea0001e17800 R08: 0000000000000005 R09: 0000000000000000 [ 62.658112][ T5079] R10: 0000000000000000 R11: 0000000000000001 R12: ffff888145104978 [ 62.666098][ T5079] R13: ffffffff8e744240 R14: 0000000000000293 R15: ffff88807db9e258 [ 62.674087][ T5079] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 62.683039][ T5079] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.689646][ T5079] CR2: 0000559dec82aa10 CR3: 000000002a1bc000 CR4: 00000000003506f0 [ 62.697637][ T5079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.705639][ T5079] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.713627][ T5079] Call Trace: [ 62.716916][ T5079] [ 62.719882][ T5079] mark_buffer_dirty+0x3e8/0x570 [ 62.724848][ T5079] gfs2_unpin+0x109/0xcf0 [ 62.729219][ T5079] buf_lo_after_commit+0x144/0x210 [ 62.734368][ T5079] ? databuf_lo_after_commit+0x210/0x210 [ 62.740033][ T5079] gfs2_log_flush+0x140f/0x28a0 [ 62.744935][ T5079] ? gfs2_ail_drain+0x630/0x630 [ 62.749837][ T5079] gfs2_kill_sb+0x58/0x170 [ 62.754274][ T5079] deactivate_locked_super+0x98/0x160 [ 62.759699][ T5079] deactivate_super+0xb1/0xd0 [ 62.764408][ T5079] cleanup_mnt+0x2ae/0x3d0 [ 62.768881][ T5079] task_work_run+0x16f/0x270 [ 62.773521][ T5079] ? task_work_cancel+0x30/0x30 [ 62.778422][ T5079] do_exit+0xb17/0x2a90 [ 62.782625][ T5079] ? mm_update_next_owner+0x7b0/0x7b0 [ 62.788051][ T5079] ? _raw_spin_unlock_irq+0x23/0x50 [ 62.793294][ T5079] do_group_exit+0xd4/0x2a0 [ 62.797817][ T5079] __x64_sys_exit_group+0x3e/0x50 [ 62.802858][ T5079] do_syscall_64+0x39/0xb0 [ 62.807306][ T5079] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 62.813220][ T5079] RIP: 0033:0x7f1e8db569d9 [ 62.817663][ T5079] Code: Unable to access opcode bytes at 0x7f1e8db569af. [ 62.824686][ T5079] RSP: 002b:00007ffc2f05f008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 62.833123][ T5079] RAX: ffffffffffffffda RBX: 00007f1e8dc03330 RCX: 00007f1e8db569d9 [ 62.841129][ T5079] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 62.849113][ T5079] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f1e8dbfde40 [ 62.857118][ T5079] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1e8dc03330 [ 62.865105][ T5079] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 62.873117][ T5079] [ 62.876170][ T5079] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 62.883548][ T5079] CPU: 0 PID: 5079 Comm: syz-executor202 Not tainted 6.2.0-rc4-next-20230118-syzkaller #0 [ 62.893453][ T5079] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 62.903539][ T5079] Call Trace: [ 62.906844][ T5079] [ 62.909788][ T5079] dump_stack_lvl+0xd1/0x138 [ 62.914442][ T5079] panic+0x2cc/0x626 [ 62.918358][ T5079] ? panic_print_sys_info.part.0+0x110/0x110 [ 62.924380][ T5079] ? __folio_mark_dirty+0xba8/0xf70 [ 62.929604][ T5079] check_panic_on_warn.cold+0x19/0x35 [ 62.935022][ T5079] __warn+0xf2/0x1a0 [ 62.938974][ T5079] ? __folio_mark_dirty+0xba8/0xf70 [ 62.944208][ T5079] report_bug+0x1c0/0x210 [ 62.948582][ T5079] handle_bug+0x3c/0x70 [ 62.952777][ T5079] exc_invalid_op+0x18/0x50 [ 62.957317][ T5079] asm_exc_invalid_op+0x1a/0x20 [ 62.962189][ T5079] RIP: 0010:__folio_mark_dirty+0xba8/0xf70 [ 62.968033][ T5079] Code: 78 70 48 89 44 24 10 e8 46 35 55 08 31 ff 89 c6 89 44 24 10 e8 49 8a d2 ff 8b 44 24 10 85 c0 0f 85 62 f9 ff ff e8 88 8d d2 ff <0f> 0b e9 56 f9 ff ff e8 7c 8d d2 ff e8 57 5b bb ff 31 ff 41 89 c4 [ 62.987669][ T5079] RSP: 0018:ffffc90003defa68 EFLAGS: 00010093 [ 62.993767][ T5079] RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 63.001825][ T5079] RDX: ffff8880252aba80 RSI: ffffffff81af46d8 RDI: 0000000000000005 [ 63.009834][ T5079] RBP: ffffea0001e17800 R08: 0000000000000005 R09: 0000000000000000 [ 63.017821][ T5079] R10: 0000000000000000 R11: 0000000000000001 R12: ffff888145104978 [ 63.025808][ T5079] R13: ffffffff8e744240 R14: 0000000000000293 R15: ffff88807db9e258 [ 63.033824][ T5079] ? __folio_mark_dirty+0xba8/0xf70 [ 63.039063][ T5079] ? __folio_mark_dirty+0xba8/0xf70 [ 63.044319][ T5079] mark_buffer_dirty+0x3e8/0x570 [ 63.049393][ T5079] gfs2_unpin+0x109/0xcf0 [ 63.053761][ T5079] buf_lo_after_commit+0x144/0x210 [ 63.059022][ T5079] ? databuf_lo_after_commit+0x210/0x210 [ 63.064690][ T5079] gfs2_log_flush+0x140f/0x28a0 [ 63.069606][ T5079] ? gfs2_ail_drain+0x630/0x630 [ 63.074504][ T5079] gfs2_kill_sb+0x58/0x170 [ 63.078959][ T5079] deactivate_locked_super+0x98/0x160 [ 63.084366][ T5079] deactivate_super+0xb1/0xd0 [ 63.089081][ T5079] cleanup_mnt+0x2ae/0x3d0 [ 63.093529][ T5079] task_work_run+0x16f/0x270 [ 63.098157][ T5079] ? task_work_cancel+0x30/0x30 [ 63.103072][ T5079] do_exit+0xb17/0x2a90 [ 63.107271][ T5079] ? mm_update_next_owner+0x7b0/0x7b0 [ 63.112682][ T5079] ? _raw_spin_unlock_irq+0x23/0x50 [ 63.117915][ T5079] do_group_exit+0xd4/0x2a0 [ 63.122438][ T5079] __x64_sys_exit_group+0x3e/0x50 [ 63.127482][ T5079] do_syscall_64+0x39/0xb0 [ 63.131931][ T5079] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 63.137868][ T5079] RIP: 0033:0x7f1e8db569d9 [ 63.142297][ T5079] Code: Unable to access opcode bytes at 0x7f1e8db569af. [ 63.149326][ T5079] RSP: 002b:00007ffc2f05f008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 63.157761][ T5079] RAX: ffffffffffffffda RBX: 00007f1e8dc03330 RCX: 00007f1e8db569d9 [ 63.165749][ T5079] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 63.173735][ T5079] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 00007f1e8dbfde40 [ 63.181726][ T5079] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1e8dc03330 [ 63.189713][ T5079] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 63.197718][ T5079] [ 63.200901][ T5079] Kernel Offset: disabled [ 63.205427][ T5079] Rebooting in 86400 seconds..