./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3148875783 <...> DUID 00:04:cd:7d:74:7d:04:96:3f:c0:f2:1a:da:5a:49:b1:9f:fb forked to background, child pid 3186 [ 27.146301][ T3187] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.158214][ T3187] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.30' (ECDSA) to the list of known hosts. execve("./syz-executor3148875783", ["./syz-executor3148875783"], 0x7ffc444474a0 /* 10 vars */) = 0 brk(NULL) = 0x555555abd000 brk(0x555555abdc40) = 0x555555abdc40 arch_prctl(ARCH_SET_FS, 0x555555abd300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3148875783", 4096) = 28 brk(0x555555adec40) = 0x555555adec40 brk(0x555555adf000) = 0x555555adf000 mprotect(0x7f405a500000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3609 attached , child_tidptr=0x555555abd5d0) = 3609 [pid 3609] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3609] setpgid(0, 0) = 0 [pid 3609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 3609] write(3, "1000", 4) = 4 [pid 3609] close(3) = 0 [pid 3609] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY|O_CLOEXEC) = 3 [pid 3609] socketpair(AF_UNIX, SOCK_STREAM, 0, [4, 5]) = 0 [pid 3609] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 6 [pid 3609] ioctl(6, NBD_SET_SOCK, 4) = 0 [pid 3609] ioctl(6, NBD_SET_SIZE_BLOCKS, 1023) = 0 syzkaller login: [ 49.303615][ T3609] nbd0: detected capacity change from 0 to 2046 [pid 3609] ioctl(3, NBD_DO_IT [pid 3608] kill(-3609, SIGKILL) = 0 [pid 3608] kill(3609, SIGKILL) = 0 [pid 3609] <... ioctl resumed>) = ? [ 54.262098][ T3609] block nbd0: shutting down sockets [pid 3608] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 3608] fstat(3, {st_mode=S_IFDIR|0755, st_size=0, ...}) = 0 [pid 3608] getdents64(3, 0x555555abe620 /* 2 entries */, 32768) = 48 [pid 3608] getdents64(3, 0x555555abe620 /* 0 entries */, 32768) = 0 [pid 3608] close(3) = 0 [ 76.302320][ T146] cfg80211: failed to load regulatory.db [ 79.499777][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 30 seconds [ 109.579773][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 60 seconds [ 111.305242][ T2974] udevd[2974]: worker [3611] /devices/virtual/block/nbd0 is taking a long time [ 139.659805][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 90 seconds [ 169.739738][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 120 seconds [ 199.819803][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 150 seconds [ 229.899741][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 180 seconds [ 231.465032][ T2974] udevd[2974]: worker [3611] /devices/virtual/block/nbd0 timeout; kill it [ 231.474312][ T2974] udevd[2974]: seq 7478 '/devices/virtual/block/nbd0' killed [ 259.979796][ T9] block nbd0: Possible stuck request ffff88801e0a0000: control (read@0,4096B). Runtime 210 seconds [ 286.219811][ T28] INFO: task syz-executor314:3609 blocked for more than 143 seconds. [ 286.228026][ T28] Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 [ 286.235103][ T28] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.243828][ T28] task:syz-executor314 state:D stack:27472 pid:3609 ppid:3608 flags:0x00004006 [ 286.253112][ T28] Call Trace: [ 286.256394][ T28] [ 286.259319][ T28] __schedule+0xadf/0x52b0 [ 286.263875][ T28] ? io_schedule_timeout+0x140/0x140 [ 286.269186][ T28] schedule+0xda/0x1b0 [ 286.273303][ T28] schedule_preempt_disabled+0xf/0x20 [ 286.278699][ T28] __mutex_lock+0xa44/0x1350 [ 286.283347][ T28] ? blkdev_put+0xbc/0x770 [ 286.287860][ T28] ? mutex_lock_io_nested+0x1190/0x1190 [ 286.293451][ T28] ? locks_check_ctx_file_list+0x1d/0x110 [ 286.299194][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 286.305174][ T28] ? do_raw_spin_unlock+0x171/0x230 [ 286.310449][ T28] ? _raw_spin_unlock+0x24/0x40 [ 286.315306][ T28] ? locks_remove_file+0x2f7/0x570 [ 286.320475][ T28] blkdev_put+0xbc/0x770 [ 286.324748][ T28] blkdev_close+0x64/0x80 [ 286.329106][ T28] __fput+0x27c/0xa90 [ 286.333135][ T28] ? blkdev_fsync+0xa0/0xa0 [ 286.337671][ T28] task_work_run+0xdd/0x1a0 [ 286.342245][ T28] do_exit+0xc39/0x2b60 [ 286.346423][ T28] ? get_signal+0x93b/0x2610 [ 286.351071][ T28] ? mm_update_next_owner+0x7a0/0x7a0 [ 286.356486][ T28] do_group_exit+0xd0/0x2a0 [ 286.361086][ T28] get_signal+0x238c/0x2610 [ 286.365629][ T28] ? map_id_up+0x178/0x2f0 [ 286.370129][ T28] ? exit_signals+0x8b0/0x8b0 [ 286.374835][ T28] ? __task_pid_nr_ns+0x168/0x4b0 [ 286.379936][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 286.384830][ T28] arch_do_signal_or_restart+0x82/0x2300 [ 286.390518][ T28] ? find_held_lock+0x2d/0x110 [ 286.395296][ T28] ? get_sigframe_size+0x10/0x10 [ 286.400284][ T28] ? ptrace_notify+0xfa/0x140 [ 286.404977][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 286.409930][ T28] ? send_sig+0xfe/0x160 [ 286.414205][ T28] ? send_sig_info+0x140/0x140 [ 286.418963][ T28] ? _raw_spin_unlock_irq+0x1f/0x40 [ 286.424343][ T28] ? exit_to_user_mode_prepare+0x137/0x250 [ 286.430207][ T28] exit_to_user_mode_prepare+0x15f/0x250 [ 286.435843][ T28] syscall_exit_to_user_mode+0x19/0x50 [ 286.441367][ T28] do_syscall_64+0x42/0xb0 [ 286.445810][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.451767][ T28] RIP: 0033:0x7f405a4936b9 [ 286.456192][ T28] RSP: 002b:00007fffa05f7ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 286.465114][ T28] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007f405a4936b9 [ 286.473143][ T28] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 286.481169][ T28] RBP: 0000000000000000 R08: 00007fffa05f8048 R09: 00007fffa05f8048 [ 286.489155][ T28] R10: 00007fffa05f8048 R11: 0000000000000246 R12: 00007f405a452740 [ 286.497196][ T28] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 286.505240][ T28] [ 286.508305][ T28] [ 286.508305][ T28] Showing all threads with locks held in the system: [ 286.517200][ T28] task:rcu_tasks_kthre state:I stack:29000 pid:12 ppid:2 flags:0x00004000 [ 286.526464][ T28] Call Trace: [ 286.529777][ T28] [ 286.532716][ T28] __schedule+0xadf/0x52b0 [ 286.537165][ T28] ? find_held_lock+0x2d/0x110 [ 286.542018][ T28] ? rcu_tasks_one_gp+0x6f5/0xc70 [ 286.547079][ T28] ? io_schedule_timeout+0x140/0x140 [ 286.552421][ T28] ? mark_held_locks+0x9f/0xe0 [ 286.557293][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 286.563179][ T28] schedule+0xda/0x1b0 [ 286.567301][ T28] rcu_tasks_one_gp+0x3e5/0xc70 [ 286.572231][ T28] rcu_tasks_kthread+0x73/0xa0 [ 286.577022][ T28] ? synchronize_rcu_tasks_trace+0x60/0x60 [ 286.582911][ T28] kthread+0x2e4/0x3a0 [ 286.586997][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 286.592681][ T28] ret_from_fork+0x1f/0x30 [ 286.597206][ T28] [ 286.600312][ T28] 1 lock held by rcu_tasks_kthre/12: [ 286.605635][ T28] #0: ffffffff8bf88f30 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 286.616152][ T28] task:rcu_tasks_trace state:I stack:29120 pid:13 ppid:2 flags:0x00004000 [ 286.625491][ T28] Call Trace: [ 286.628826][ T28] [ 286.631826][ T28] __schedule+0xadf/0x52b0 [ 286.636295][ T28] ? find_held_lock+0x2d/0x110 [ 286.641151][ T28] ? rcu_tasks_one_gp+0x6f5/0xc70 [ 286.646212][ T28] ? io_schedule_timeout+0x140/0x140 [ 286.651551][ T28] ? mark_held_locks+0x9f/0xe0 [ 286.656336][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 286.662201][ T28] schedule+0xda/0x1b0 [ 286.666295][ T28] rcu_tasks_one_gp+0x3e5/0xc70 [ 286.671214][ T28] rcu_tasks_kthread+0x73/0xa0 [ 286.676006][ T28] ? synchronize_rcu_tasks_trace+0x60/0x60 [ 286.681879][ T28] kthread+0x2e4/0x3a0 [ 286.685971][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 286.691665][ T28] ret_from_fork+0x1f/0x30 [ 286.696110][ T28] [ 286.699129][ T28] 1 lock held by rcu_tasks_trace/13: [ 286.704525][ T28] #0: ffffffff8bf88c30 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 [ 286.715650][ T28] task:getty state:S stack:23392 pid:3291 ppid:1 flags:0x00000000 [ 286.724920][ T28] Call Trace: [ 286.728208][ T28] [ 286.731184][ T28] __schedule+0xadf/0x52b0 [ 286.735641][ T28] ? io_schedule_timeout+0x140/0x140 [ 286.741031][ T28] schedule+0xda/0x1b0 [ 286.745201][ T28] schedule_timeout+0x1db/0x2a0 [ 286.750145][ T28] ? usleep_range_state+0x1b0/0x1b0 [ 286.755398][ T28] ? __up_read+0x192/0x720 [ 286.759931][ T28] ? down_read+0x198/0x450 [ 286.764384][ T28] ? up_write+0x470/0x470 [ 286.768739][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 286.774589][ T28] wait_woken+0x18b/0x1f0 [ 286.778933][ T28] n_tty_read+0x1051/0x13e0 [ 286.783546][ T28] ? n_tty_open+0x170/0x170 [ 286.788074][ T28] ? __init_waitqueue_head+0x150/0x150 [ 286.793588][ T28] tty_read+0x33a/0x5d0 [ 286.797766][ T28] ? do_SAK+0x70/0x70 [ 286.801812][ T28] ? fsnotify_perm.part.0+0x221/0x610 [ 286.807288][ T28] ? apparmor_file_permission+0x264/0x4e0 [ 286.813119][ T28] ? security_file_permission+0xab/0xd0 [ 286.818686][ T28] vfs_read+0x67d/0x930 [ 286.822904][ T28] ? kernel_read+0x1c0/0x1c0 [ 286.827514][ T28] ? __ct_user_exit+0xff/0x150 [ 286.832323][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 286.837197][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 286.842130][ T28] ? __fget_light+0x20a/0x270 [ 286.846854][ T28] ksys_read+0x127/0x250 [ 286.851149][ T28] ? vfs_write+0xdd0/0xdd0 [ 286.855596][ T28] ? syscall_enter_from_user_mode+0x22/0xb0 [ 286.861553][ T28] do_syscall_64+0x35/0xb0 [ 286.866005][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 286.871949][ T28] RIP: 0033:0x7f5d67df78fe [ 286.876382][ T28] RSP: 002b:00007ffe224e8e18 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 286.884874][ T28] RAX: ffffffffffffffda RBX: 0000562f95923910 RCX: 00007f5d67df78fe [ 286.892922][ T28] RDX: 0000000000000001 RSI: 00007ffe224e8e30 RDI: 0000000000000000 [ 286.900988][ T28] RBP: 0000562f95923970 R08: 0000000000000007 R09: 0000562f95924cd0 [ 286.908974][ T28] R10: 0000000000000063 R11: 0000000000000246 R12: 0000562f959239ac [ 286.917008][ T28] R13: 00007ffe224e8e30 R14: 0000000000000000 R15: 0000562f959239ac [ 286.925078][ T28] [ 286.928096][ T28] 2 locks held by getty/3291: [ 286.932808][ T28] #0: ffff888026c16098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 [ 286.942693][ T28] #1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 [ 286.952857][ T28] task:syz-executor314 state:D stack:27472 pid:3609 ppid:3608 flags:0x00004006 [ 286.962106][ T28] Call Trace: [ 286.965386][ T28] [ 286.968311][ T28] __schedule+0xadf/0x52b0 [ 286.972819][ T28] ? io_schedule_timeout+0x140/0x140 [ 286.978146][ T28] schedule+0xda/0x1b0 [ 286.982266][ T28] schedule_preempt_disabled+0xf/0x20 [ 286.987699][ T28] __mutex_lock+0xa44/0x1350 [ 286.992360][ T28] ? blkdev_put+0xbc/0x770 [ 286.996800][ T28] ? mutex_lock_io_nested+0x1190/0x1190 [ 287.002483][ T28] ? locks_check_ctx_file_list+0x1d/0x110 [ 287.008252][ T28] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 287.014148][ T28] ? do_raw_spin_unlock+0x171/0x230 [ 287.019393][ T28] ? _raw_spin_unlock+0x24/0x40 [ 287.024334][ T28] ? locks_remove_file+0x2f7/0x570 [ 287.029488][ T28] blkdev_put+0xbc/0x770 [ 287.033822][ T28] blkdev_close+0x64/0x80 [ 287.038201][ T28] __fput+0x27c/0xa90 [ 287.042247][ T28] ? blkdev_fsync+0xa0/0xa0 [ 287.046776][ T28] task_work_run+0xdd/0x1a0 [ 287.051336][ T28] do_exit+0xc39/0x2b60 [ 287.055516][ T28] ? get_signal+0x93b/0x2610 [ 287.060157][ T28] ? mm_update_next_owner+0x7a0/0x7a0 [ 287.065574][ T28] do_group_exit+0xd0/0x2a0 [ 287.070124][ T28] get_signal+0x238c/0x2610 [ 287.074651][ T28] ? map_id_up+0x178/0x2f0 [ 287.079079][ T28] ? exit_signals+0x8b0/0x8b0 [ 287.083798][ T28] ? __task_pid_nr_ns+0x168/0x4b0 [ 287.088858][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 287.093779][ T28] arch_do_signal_or_restart+0x82/0x2300 [ 287.099460][ T28] ? find_held_lock+0x2d/0x110 [ 287.104283][ T28] ? get_sigframe_size+0x10/0x10 [ 287.109248][ T28] ? ptrace_notify+0xfa/0x140 [ 287.113993][ T28] ? lock_downgrade+0x6e0/0x6e0 [ 287.118868][ T28] ? send_sig+0xfe/0x160 [ 287.123166][ T28] ? send_sig_info+0x140/0x140 [ 287.127946][ T28] ? _raw_spin_unlock_irq+0x1f/0x40 [ 287.133202][ T28] ? exit_to_user_mode_prepare+0x137/0x250 [ 287.139033][ T28] exit_to_user_mode_prepare+0x15f/0x250 [ 287.144709][ T28] syscall_exit_to_user_mode+0x19/0x50 [ 287.150252][ T28] do_syscall_64+0x42/0xb0 [ 287.154703][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 287.160634][ T28] RIP: 0033:0x7f405a4936b9 [ 287.165073][ T28] RSP: 002b:00007fffa05f7ea8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 287.173586][ T28] RAX: fffffffffffffe00 RBX: 0000000000000000 RCX: 00007f405a4936b9 [ 287.181643][ T28] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 287.189679][ T28] RBP: 0000000000000000 R08: 00007fffa05f8048 R09: 00007fffa05f8048 [ 287.197667][ T28] R10: 00007fffa05f8048 R11: 0000000000000246 R12: 00007f405a452740 [ 287.205699][ T28] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 287.213720][ T28] [ 287.216734][ T28] 1 lock held by syz-executor314/3609: [ 287.222224][ T28] #0: ffff88801db724c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_put+0xbc/0x770 [ 287.231599][ T28] task:udevd state:D stack:26240 pid:3611 ppid:2974 flags:0x00004004 [ 287.240856][ T28] Call Trace: [ 287.244141][ T28] [ 287.247066][ T28] __schedule+0xadf/0x52b0 [ 287.251548][ T28] ? io_schedule_timeout+0x140/0x140 [ 287.256875][ T28] ? mark_held_locks+0x9f/0xe0 [ 287.261707][ T28] schedule+0xda/0x1b0 [ 287.265801][ T28] io_schedule+0xba/0x130 [ 287.270179][ T28] folio_wait_bit_common+0x49f/0xa20 [ 287.275502][ T28] ? perf_trace_mm_filemap_op_page_cache+0x8c0/0x8c0 [ 287.282424][ T28] ? filemap_add_folio+0x1d0/0x1d0 [ 287.287553][ T28] ? folio_unlock+0xc0/0xc0 [ 287.292151][ T28] ? filemap_read_folio+0xda/0x1d0 [ 287.297309][ T28] do_read_cache_folio+0x2c0/0x510 [ 287.302509][ T28] ? blkdev_writepages+0x20/0x20 [ 287.307483][ T28] read_part_sector+0xf6/0x440 [ 287.312390][ T28] ? adfspart_check_ICS+0x890/0x890 [ 287.317618][ T28] adfspart_check_POWERTEC+0x93/0x680 [ 287.323055][ T28] ? __alloc_pages_slowpath.constprop.0+0x2200/0x2200 [ 287.329876][ T28] ? adfspart_check_ADFS+0x560/0x560 [ 287.335165][ T28] ? adfspart_check_ICS+0x890/0x890 [ 287.340498][ T28] ? vsprintf+0x30/0x30 [ 287.344757][ T28] ? adfspart_check_ICS+0x890/0x890 [ 287.350035][ T28] bdev_disk_changed+0x629/0xf60 [ 287.355000][ T28] ? iput.part.0+0x73/0x810 [ 287.359511][ T28] blkdev_get_whole+0x18a/0x2d0 [ 287.364431][ T28] blkdev_get_by_dev.part.0+0x5ec/0xb90 [ 287.370024][ T28] ? devcgroup_check_permission+0x1a6/0x430 [ 287.375918][ T28] blkdev_get_by_dev+0x6b/0x80 [ 287.380724][ T28] blkdev_open+0x13c/0x2c0 [ 287.385160][ T28] do_dentry_open+0x6cc/0x13f0 [ 287.389974][ T28] ? blkdev_close+0x80/0x80 [ 287.394502][ T28] path_openat+0x1c92/0x28f0 [ 287.399101][ T28] ? path_lookupat+0x840/0x840 [ 287.403923][ T28] do_filp_open+0x1b6/0x400 [ 287.408455][ T28] ? may_open_dev+0xf0/0xf0 [ 287.413010][ T28] ? find_held_lock+0x2d/0x110 [ 287.417807][ T28] ? do_raw_spin_lock+0x120/0x2a0 [ 287.423094][ T28] ? rwlock_bug.part.0+0x90/0x90 [ 287.428068][ T28] ? _find_next_bit+0x1e3/0x260 [ 287.433111][ T28] ? _raw_spin_unlock+0x24/0x40 [ 287.438009][ T28] ? alloc_fd+0x2f0/0x6f0 [ 287.442420][ T28] do_sys_openat2+0x16d/0x4c0 [ 287.447287][ T28] ? build_open_flags+0x6f0/0x6f0 [ 287.452363][ T28] ? up_write+0x470/0x470 [ 287.456723][ T28] __x64_sys_openat+0x13f/0x1f0 [ 287.461632][ T28] ? __ia32_sys_open+0x1c0/0x1c0 [ 287.466586][ T28] ? syscall_enter_from_user_mode+0x22/0xb0 [ 287.472528][ T28] ? syscall_enter_from_user_mode+0x22/0xb0 [ 287.478453][ T28] do_syscall_64+0x35/0xb0 [ 287.482927][ T28] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 287.488839][ T28] RIP: 0033:0x7f01b6125697 [ 287.493290][ T28] RSP: 002b:00007ffedbed9ad0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 [ 287.501746][ T28] RAX: ffffffffffffffda RBX: 0000563d946a3bd0 RCX: 00007f01b6125697 [ 287.509747][ T28] RDX: 00000000000a0800 RSI: 0000563d9469a790 RDI: 00000000ffffff9c [ 287.517735][ T28] RBP: 0000563d9469a790 R08: 0000000000000001 R09: 00007ffedbf8e080 [ 287.525754][ T28] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000a0800 [ 287.533768][ T28] R13: 0000563d946bed40 R14: 00007ffedbed9b7c R15: 0000563d94699910 [ 287.541807][ T28] [ 287.544834][ T28] 1 lock held by udevd/3611: [ 287.549406][ T28] #0: ffff88801db724c8 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb90 [ 287.560104][ T28] [ 287.562439][ T28] ============================================= [ 287.562439][ T28] [ 287.570925][ T28] NMI backtrace for cpu 1 [ 287.575254][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 [ 287.584544][ T28] khungtaskd[28] cmdline: a [ 287.589742][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 287.599800][ T28] Call Trace: [ 287.603081][ T28] [ 287.606018][ T28] dump_stack_lvl+0xcd/0x134 [ 287.610689][ T28] nmi_cpu_backtrace.cold+0x46/0x14f [ 287.615980][ T28] ? lockdep_hardirqs_off+0x90/0xd0 [ 287.621202][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 287.626418][ T28] nmi_trigger_cpumask_backtrace+0x206/0x250 [ 287.632413][ T28] watchdog+0xcf7/0xfd0 [ 287.636588][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 287.642587][ T28] kthread+0x2e4/0x3a0 [ 287.646668][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 287.652314][ T28] ret_from_fork+0x1f/0x30 [ 287.656762][ T28] [ 287.659862][ T28] Sending NMI from CPU 1 to CPUs 0: [ 287.665092][ C0] NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x6f/0xb0 [ 287.666073][ T28] Kernel panic - not syncing: hung_task: blocked tasks [ 287.681208][ T28] CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc1-next-20220819-syzkaller #0 [ 287.690496][ T28] khungtaskd[28] cmdline: a [ 287.695676][ T28] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 287.705715][ T28] Call Trace: [ 287.708982][ T28] [ 287.711907][ T28] dump_stack_lvl+0xcd/0x134 [ 287.716498][ T28] panic+0x2c8/0x627 [ 287.720416][ T28] ? panic_print_sys_info.part.0+0x10b/0x10b [ 287.726393][ T28] ? irq_work_claim+0x76/0x90 [ 287.731063][ T28] ? lapic_can_unplug_cpu+0x80/0x80 [ 287.736253][ T28] ? irq_work_queue+0x29/0x80 [ 287.740929][ T28] ? watchdog.cold+0x135/0x426 [ 287.745730][ T28] watchdog.cold+0x146/0x426 [ 287.750340][ T28] ? proc_dohung_task_timeout_secs+0x80/0x80 [ 287.756350][ T28] kthread+0x2e4/0x3a0 [ 287.760430][ T28] ? kthread_complete_and_exit+0x40/0x40 [ 287.766079][ T28] ret_from_fork+0x1f/0x30 [ 287.770521][ T28] [ 287.773707][ T28] Kernel Offset: disabled [ 287.778079][ T28] Rebooting in 86400 seconds..