Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts. executing program [ 1001.348638] INFO: task syz-executor392:7984 blocked for more than 140 seconds. [ 1001.348645] Not tainted 4.14.298-syzkaller #0 [ 1001.348648] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1001.348652] syz-executor392 D28096 7984 7982 0x00000004 [ 1001.348671] Call Trace: [ 1001.348688] __schedule+0x88b/0x1de0 [ 1001.381330] ? lock_acquire+0x170/0x3f0 [ 1001.385284] ? io_schedule_timeout+0x140/0x140 [ 1001.390054] ? _raw_spin_unlock+0x29/0x40 [ 1001.394217] ? fuse_writepage_locked+0xe80/0xe80 [ 1001.399020] schedule+0x8d/0x1b0 [ 1001.402467] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 1001.408067] ? fuse_do_ioctl+0x1570/0x1570 [ 1001.412355] ? end_page_writeback+0xe3/0x1c0 [ 1001.416754] ? wait_woken+0x230/0x230 [ 1001.421112] fuse_launder_page+0xa2/0xd0 [ 1001.425184] invalidate_inode_pages2_range+0x547/0xc00 [ 1001.430513] ? clear_shadow_entry+0x160/0x160 [ 1001.434999] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 1001.439979] ? fuse_file_alloc+0x1ca/0x260 [ 1001.444327] ? _raw_spin_unlock+0x29/0x40 [ 1001.448553] ? fuse_do_open+0x18e/0x460 [ 1001.452523] fuse_finish_open+0x262/0x500 [ 1001.456652] fuse_open_common+0x234/0x290 [ 1001.460848] do_dentry_open+0x44b/0xec0 [ 1001.464928] ? fuse_open_common+0x290/0x290 [ 1001.469319] ? __inode_permission+0xcd/0x2f0 [ 1001.473725] vfs_open+0x105/0x220 [ 1001.477160] path_openat+0x628/0x2970 [ 1001.481015] ? path_lookupat+0x780/0x780 [ 1001.485075] ? trace_hardirqs_on+0x10/0x10 [ 1001.489375] do_filp_open+0x179/0x3c0 [ 1001.493177] ? may_open_dev+0xe0/0xe0 [ 1001.497052] ? lock_downgrade+0x740/0x740 [ 1001.501242] ? do_raw_spin_unlock+0x164/0x220 [ 1001.505729] ? _raw_spin_unlock+0x29/0x40 [ 1001.509924] ? __alloc_fd+0x1be/0x490 [ 1001.513718] do_sys_open+0x296/0x410 [ 1001.517421] ? filp_open+0x60/0x60 [ 1001.520988] ? do_syscall_64+0x4c/0x640 [ 1001.524948] ? compat_SyS_openat+0x30/0x30 [ 1001.529240] do_syscall_64+0x1d5/0x640 [ 1001.533127] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 1001.538323] [ 1001.538323] Showing all locks held in the system: [ 1001.544806] 1 lock held by khungtaskd/1524: [ 1001.549315] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 1001.558361] 1 lock held by in:imklog/7664: [ 1001.562626] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 1001.571121] 2 locks held by syz-executor392/7984: [ 1001.575946] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 1001.584387] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 1001.594449] [ 1001.596061] ============================================= [ 1001.596061] [ 1001.603602] NMI backtrace for cpu 0 [ 1001.607224] CPU: 0 PID: 1524 Comm: khungtaskd Not tainted 4.14.298-syzkaller #0 [ 1001.614745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.624082] Call Trace: [ 1001.626653] dump_stack+0x1b2/0x281 [ 1001.630265] nmi_cpu_backtrace.cold+0x57/0x93 [ 1001.634735] ? irq_force_complete_move+0x350/0x350 [ 1001.639640] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 1001.644888] watchdog+0x5b9/0xb40 [ 1001.648317] ? hungtask_pm_notify+0x50/0x50 [ 1001.652611] kthread+0x30d/0x420 [ 1001.655950] ? kthread_create_on_node+0xd0/0xd0 [ 1001.660593] ret_from_fork+0x24/0x30 [ 1001.664386] Sending NMI from CPU 0 to CPUs 1: [ 1001.669107] NMI backtrace for cpu 1 [ 1001.669112] CPU: 1 PID: 4613 Comm: systemd-journal Not tainted 4.14.298-syzkaller #0 [ 1001.669116] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.669119] task: ffff8880a1f3c580 task.stack: ffff8880a1f40000 [ 1001.669122] RIP: 0033:0x7f6987bb6796 [ 1001.669125] RSP: 002b:00007ffeabc23258 EFLAGS: 00000297 [ 1001.669130] RAX: 0000000000000002 RBX: 0000562422b369e0 RCX: 0000562422b36b00 [ 1001.669133] RDX: 0000562422b3725c RSI: 0000562422b371e0 RDI: 0000562422b369e0 [ 1001.669137] RBP: 0000000000000000 R08: 0000562422b36a78 R09: 0000562422b37258 [ 1001.669140] R10: 0000562422b371e0 R11: 0000000000000010 R12: 0000562422b35250 [ 1001.669144] R13: 00007ffeabc23398 R14: 0000562422907958 R15: 0005ecdd2d9e1308 [ 1001.669148] FS: 00007f6987ef08c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 1001.669151] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1001.669154] CR2: 00007f69852bf000 CR3: 00000000a3651000 CR4: 00000000003406e0 [ 1001.669157] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1001.669161] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1001.670030] Kernel panic - not syncing: hung_task: blocked tasks [ 1001.783360] CPU: 0 PID: 1524 Comm: khungtaskd Not tainted 4.14.298-syzkaller #0 [ 1001.790779] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1001.800105] Call Trace: [ 1001.802673] dump_stack+0x1b2/0x281 [ 1001.806278] panic+0x1f9/0x42d [ 1001.809459] ? add_taint.cold+0x16/0x16 [ 1001.813423] ? printk_safe_flush+0xa9/0x110 [ 1001.817730] watchdog+0x5ca/0xb40 [ 1001.821168] ? hungtask_pm_notify+0x50/0x50 [ 1001.825462] kthread+0x30d/0x420 [ 1001.828802] ? kthread_create_on_node+0xd0/0xd0 [ 1001.833553] ret_from_fork+0x24/0x30 [ 1001.837549] Kernel Offset: disabled [ 1001.841160] Rebooting in 86400 seconds..