Warning: Permanently added '10.128.1.93' (ECDSA) to the list of known hosts. executing program [ 1001.319078] INFO: task syz-executor857:7980 blocked for more than 140 seconds. [ 1001.326752] Not tainted 4.14.302-syzkaller #0 [ 1001.333610] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.343413] syz-executor857 D28560 7980 7978 0x00000004 [ 1001.349444] Call Trace: [ 1001.352027] __schedule+0x88b/0x1de0 [ 1001.355718] ? lock_acquire+0x170/0x3f0 [ 1001.360555] ? io_schedule_timeout+0x140/0x140 [ 1001.365142] ? _raw_spin_unlock+0x29/0x40 [ 1001.369979] ? fuse_writepage_locked+0xe80/0xe80 [ 1001.374731] schedule+0x8d/0x1b0 [ 1001.378078] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 1001.384503] ? fuse_do_ioctl+0x1570/0x1570 [ 1001.388727] ? end_page_writeback+0xe3/0x1c0 [ 1001.393723] ? wait_woken+0x230/0x230 [ 1001.397513] fuse_launder_page+0xa2/0xd0 [ 1001.402150] invalidate_inode_pages2_range+0x547/0xc00 [ 1001.407419] ? clear_shadow_entry+0x160/0x160 [ 1001.412520] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 1001.417450] ? fuse_file_alloc+0x1ca/0x260 [ 1001.422342] ? _raw_spin_unlock+0x29/0x40 [ 1001.426485] ? fuse_do_open+0x18e/0x460 [ 1001.431036] fuse_finish_open+0x262/0x500 [ 1001.435170] fuse_open_common+0x234/0x290 [ 1001.439859] do_dentry_open+0x44b/0xec0 [ 1001.443817] ? fuse_open_common+0x290/0x290 [ 1001.448113] ? __inode_permission+0xcd/0x2f0 [ 1001.453301] vfs_open+0x105/0x220 [ 1001.456740] path_openat+0x628/0x2970 [ 1001.461304] ? path_lookupat+0x780/0x780 [ 1001.465373] ? trace_hardirqs_on+0x10/0x10 [ 1001.470308] do_filp_open+0x179/0x3c0 [ 1001.474110] ? may_open_dev+0xe0/0xe0 [ 1001.477893] ? lock_downgrade+0x740/0x740 [ 1001.482915] ? do_raw_spin_unlock+0x164/0x220 [ 1001.487401] ? _raw_spin_unlock+0x29/0x40 [ 1001.492830] ? __alloc_fd+0x1be/0x490 [ 1001.496623] do_sys_open+0x296/0x410 [ 1001.500874] ? filp_open+0x60/0x60 [ 1001.504402] ? do_syscall_64+0x4c/0x640 [ 1001.508352] ? compat_SyS_openat+0x30/0x30 [ 1001.513806] do_syscall_64+0x1d5/0x640 [ 1001.517680] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 1001.523448] RIP: 0033:0x7f68c19dc4c9 [ 1001.527152] RSP: 002b:00007f68c198d2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 1001.535632] RAX: ffffffffffffffda RBX: 00007f68c1a6d4c0 RCX: 00007f68c19dc4c9 [ 1001.543525] RDX: 00007f68c19dc4c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 1001.551279] RBP: 00007f68c1a3a164 R08: 0000000000000000 R09: 0000000000000000 [ 1001.558547] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 1001.566419] R13: 00007f68c1a36158 R14: 00007f68c1a38160 R15: 00007f68c1a6d4c8 [ 1001.574103] [ 1001.574103] Showing all locks held in the system: [ 1001.580843] 1 lock held by khungtaskd/1533: [ 1001.585203] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1001.594319] 2 locks held by syz-executor857/7980: [ 1001.599233] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 1001.607646] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 1001.617711] [ 1001.619443] ============================================= [ 1001.619443] [ 1001.626710] NMI backtrace for cpu 0 [ 1001.630361] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1001.637790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.647120] Call Trace: [ 1001.649687] dump_stack+0x1b2/0x281 [ 1001.653475] nmi_cpu_backtrace.cold+0x57/0x93 [ 1001.657949] ? irq_force_complete_move+0x350/0x350 [ 1001.662855] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1001.668107] watchdog+0x5b9/0xb40 [ 1001.671538] ? hungtask_pm_notify+0x50/0x50 [ 1001.675832] kthread+0x30d/0x420 [ 1001.679173] ? kthread_create_on_node+0xd0/0xd0 [ 1001.683917] ret_from_fork+0x24/0x30 [ 1001.687732] Sending NMI from CPU 0 to CPUs 1: [ 1001.692366] NMI backtrace for cpu 1 [ 1001.692371] CPU: 1 PID: 7666 Comm: in:imklog Not tainted 4.14.302-syzkaller #0 [ 1001.692375] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.692378] task: ffff8880aaee8340 task.stack: ffff888091388000 [ 1001.692380] RIP: 0033:0x7f6bd9fdcd7e [ 1001.692382] RSP: 002b:00007f6bd88d33a0 EFLAGS: 00000a03 [ 1001.692387] RAX: 00007f6bd40002e8 RBX: 00007f6bd4000020 RCX: 0000000000000004 [ 1001.692391] RDX: 000000000000003e RSI: 0000000000000000 RDI: 00007f6bd4000020 [ 1001.692394] RBP: 0000000000000260 R08: 00007f6bda0b0940 R09: 0000000000000270 [ 1001.692398] R10: 2ce33e6c02ce33e7 R11: 0000000000000000 R12: 0000000000000270 [ 1001.692401] R13: 00007f6bd88d3da3 R14: 00007f6bd40002d8 R15: 00007f6bd4000020 [ 1001.692405] FS: 00007f6bd88f4700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 1001.692408] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.692411] CR2: 00007f23f949f020 CR3: 00000000b1946000 CR4: 00000000003406e0 [ 1001.692414] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1001.692418] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1001.693280] Kernel panic - not syncing: hung_task: blocked tasks [ 1001.807797] CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.302-syzkaller #0 [ 1001.815228] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.824566] Call Trace: [ 1001.827129] dump_stack+0x1b2/0x281 [ 1001.830734] panic+0x1f9/0x42d [ 1001.833904] ? add_taint.cold+0x16/0x16 [ 1001.837856] ? printk_safe_flush+0xa9/0x110 [ 1001.842154] watchdog+0x5ca/0xb40 [ 1001.845582] ? hungtask_pm_notify+0x50/0x50 [ 1001.849878] kthread+0x30d/0x420 [ 1001.853221] ? kthread_create_on_node+0xd0/0xd0 [ 1001.857866] ret_from_fork+0x24/0x30 [ 1001.861829] Kernel Offset: disabled [ 1001.865444] Rebooting in 86400 seconds..