Warning: Permanently added '10.128.0.179' (ECDSA) to the list of known hosts. executing program [ 1001.335383] INFO: task syz-executor110:7991 blocked for more than 140 seconds. [ 1001.342814] Not tainted 4.14.302-syzkaller #0 [ 1001.349248] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.357659] syz-executor110 D28696 7991 7986 0x00000004 [ 1001.363287] Call Trace: [ 1001.366493] __schedule+0x88b/0x1de0 [ 1001.370213] ? lock_acquire+0x170/0x3f0 [ 1001.374172] ? io_schedule_timeout+0x140/0x140 [ 1001.379568] ? _raw_spin_unlock+0x29/0x40 [ 1001.383715] ? fuse_writepage_locked+0xe80/0xe80 [ 1001.389447] schedule+0x8d/0x1b0 [ 1001.392815] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 1001.399052] ? fuse_do_ioctl+0x1570/0x1570 [ 1001.403282] ? end_page_writeback+0xe3/0x1c0 [ 1001.408283] ? wait_woken+0x230/0x230 [ 1001.412084] fuse_launder_page+0xa2/0xd0 [ 1001.416774] invalidate_inode_pages2_range+0x547/0xc00 [ 1001.422060] ? clear_shadow_entry+0x160/0x160 [ 1001.427174] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 1001.432103] ? fuse_file_alloc+0x1ca/0x260 [ 1001.436960] ? _raw_spin_unlock+0x29/0x40 [ 1001.441106] ? fuse_do_open+0x18e/0x460 [ 1001.445063] fuse_finish_open+0x262/0x500 [ 1001.450070] fuse_open_common+0x234/0x290 [ 1001.454218] do_dentry_open+0x44b/0xec0 [ 1001.458896] ? fuse_open_common+0x290/0x290 [ 1001.463214] ? __inode_permission+0xcd/0x2f0 [ 1001.468222] vfs_open+0x105/0x220 [ 1001.471668] path_openat+0x628/0x2970 [ 1001.476151] ? path_lookupat+0x780/0x780 [ 1001.480227] ? trace_hardirqs_on+0x10/0x10 [ 1001.484448] do_filp_open+0x179/0x3c0 [ 1001.489044] ? may_open_dev+0xe0/0xe0 [ 1001.492845] ? lock_downgrade+0x740/0x740 [ 1001.497559] ? do_raw_spin_unlock+0x164/0x220 [ 1001.502047] ? _raw_spin_unlock+0x29/0x40 [ 1001.506873] ? __alloc_fd+0x1be/0x490 [ 1001.510670] do_sys_open+0x296/0x410 [ 1001.514361] ? filp_open+0x60/0x60 [ 1001.519766] ? do_syscall_64+0x4c/0x640 [ 1001.523731] ? compat_SyS_openat+0x30/0x30 [ 1001.528542] do_syscall_64+0x1d5/0x640 [ 1001.532428] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 1001.538283] RIP: 0033:0x7f6e7fc134c9 [ 1001.541987] RSP: 002b:00007f6e7fba32f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 1001.550298] RAX: ffffffffffffffda RBX: 00007f6e7fca44d0 RCX: 00007f6e7fc134c9 [ 1001.557963] RDX: 00007f6e7fc134c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 1001.565617] RBP: 00007f6e7fc71164 R08: 0000000000000000 R09: 0000000000000000 [ 1001.572881] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 1001.580788] R13: 00007f6e7fc6d158 R14: 00007f6e7fc6f160 R15: 00007f6e7fca44d8 [ 1001.588459] [ 1001.588459] Showing all locks held in the system: [ 1001.594781] 1 lock held by khungtaskd/1533: [ 1001.599220] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1001.608361] 1 lock held by in:imklog/7698: [ 1001.612598] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 1001.621217] 2 locks held by syz-executor110/7991: [ 1001.626122] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 1001.634534] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 1001.644602] [ 1001.646270] ============================================= [ 1001.646270] [ 1001.653379] NMI backtrace for cpu 1 [ 1001.657114] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1001.664541] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.673868] Call Trace: [ 1001.676433] dump_stack+0x1b2/0x281 [ 1001.680039] nmi_cpu_backtrace.cold+0x57/0x93 [ 1001.684513] ? irq_force_complete_move+0x350/0x350 [ 1001.689421] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1001.694679] watchdog+0x5b9/0xb40 [ 1001.698109] ? hungtask_pm_notify+0x50/0x50 [ 1001.702407] kthread+0x30d/0x420 [ 1001.705747] ? kthread_create_on_node+0xd0/0xd0 [ 1001.710392] ret_from_fork+0x24/0x30 [ 1001.714213] Sending NMI from CPU 1 to CPUs 0: [ 1001.719073] NMI backtrace for cpu 0 [ 1001.719077] CPU: 0 PID: 8 Comm: rcu_preempt Not tainted 4.14.302-syzkaller #0 [ 1001.719081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.719084] task: ffff8880b540e200 task.stack: ffff8880b5418000 [ 1001.719087] RIP: 0010:debug_lockdep_rcu_enabled+0x9f/0xe0 [ 1001.719090] RSP: 0018:ffff8880b541fa88 EFLAGS: 00000002 [ 1001.719095] RAX: 0000000000000007 RBX: ffff8880b540e200 RCX: 0000000000000001 [ 1001.719098] RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff8880b540ea84 [ 1001.719101] RBP: ffffffff8bfcbb60 R08: 0000000000000001 R09: 0000000000000000 [ 1001.719105] R10: ffff8880b540ea88 R11: ffff8880b540e200 R12: 0000000000000000 [ 1001.719108] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 1001.719112] FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 1001.719115] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.719119] CR2: 00007f5eb4e7b000 CR3: 00000000a15f2000 CR4: 00000000003406f0 [ 1001.719122] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1001.719125] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1001.719127] Call Trace: [ 1001.719129] lock_acquire+0x307/0x3f0 [ 1001.719131] ? lock_acquire+0x170/0x3f0 [ 1001.719134] _raw_spin_lock_irqsave+0x8c/0xc0 [ 1001.719136] ? debug_object_deactivate+0xdf/0x2e0 [ 1001.719139] debug_object_deactivate+0xdf/0x2e0 [ 1001.719141] ? debug_stats_show+0xd0/0xd0 [ 1001.719143] ? lock_timer_base+0x58/0x190 [ 1001.719146] ? _raw_spin_lock_irqsave+0x94/0xc0 [ 1001.719148] detach_if_pending+0x82/0x430 [ 1001.719151] try_to_del_timer_sync+0x9a/0xe0 [ 1001.719153] ? detach_if_pending+0x430/0x430 [ 1001.719155] del_timer_sync+0x17c/0x240 [ 1001.719157] schedule_timeout+0x4b7/0xe90 [ 1001.719160] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 1001.719162] ? usleep_range+0x130/0x130 [ 1001.719165] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 1001.719167] ? prepare_to_swait+0x115/0x2a0 [ 1001.719170] ? run_timer_softirq+0x5a0/0x5a0 [ 1001.719172] rcu_gp_kthread+0xc0a/0x1e60 [ 1001.719174] ? force_qs_rnp+0x4f0/0x4f0 [ 1001.719176] ? force_qs_rnp+0x4f0/0x4f0 [ 1001.719178] kthread+0x30d/0x420 [ 1001.719181] ? kthread_create_on_node+0xd0/0xd0 [ 1001.719183] ret_from_fork+0x24/0x30 [ 1001.719185] Code: 02 00 48 8d bb 84 08 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 <84> d2 75 32 8b 93 84 08 00 00 31 c0 5b 85 d2 0f 94 c0 c3 31 c0 [ 1001.719771] Kernel panic - not syncing: hung_task: blocked tasks [ 1001.957893] CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1001.965312] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.974642] Call Trace: [ 1001.977230] dump_stack+0x1b2/0x281 [ 1001.980862] panic+0x1f9/0x42d [ 1001.984033] ? add_taint.cold+0x16/0x16 [ 1001.987988] watchdog+0x5ca/0xb40 [ 1001.991439] ? hungtask_pm_notify+0x50/0x50 [ 1001.995737] kthread+0x30d/0x420 [ 1001.999081] ? kthread_create_on_node+0xd0/0xd0 [ 1002.003758] ret_from_fork+0x24/0x30 [ 1002.007713] Kernel Offset: disabled [ 1002.011327] Rebooting in 86400 seconds..