Warning: Permanently added '10.128.0.195' (ECDSA) to the list of known hosts. [ 857.974647] INFO: task syz-executor686:7984 blocked for more than 140 seconds. [ 857.982166] Not tainted 4.14.299-syzkaller #0 [ 857.987603] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 857.995634] syz-executor686 D28376 7984 7982 0x00000004 [ 858.001266] Call Trace: [ 858.003839] __schedule+0x88b/0x1de0 [ 858.007671] ? lock_acquire+0x170/0x3f0 [ 858.011652] ? io_schedule_timeout+0x140/0x140 [ 858.016284] ? _raw_spin_unlock+0x29/0x40 [ 858.020577] ? fuse_writepage_locked+0xe80/0xe80 [ 858.025385] schedule+0x8d/0x1b0 [ 858.028751] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 858.034352] ? fuse_do_ioctl+0x1570/0x1570 [ 858.038628] ? end_page_writeback+0xe3/0x1c0 [ 858.043033] ? wait_woken+0x230/0x230 [ 858.046889] fuse_launder_page+0xa2/0xd0 [ 858.051118] invalidate_inode_pages2_range+0x547/0xc00 [ 858.056434] ? clear_shadow_entry+0x160/0x160 [ 858.060925] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 858.065907] ? fuse_file_alloc+0x1ca/0x260 [ 858.070140] ? _raw_spin_unlock+0x29/0x40 [ 858.074267] ? fuse_do_open+0x18e/0x460 [ 858.078276] fuse_finish_open+0x262/0x500 [ 858.082452] fuse_open_common+0x234/0x290 [ 858.086691] do_dentry_open+0x44b/0xec0 [ 858.090675] ? fuse_open_common+0x290/0x290 [ 858.095162] ? __inode_permission+0xcd/0x2f0 [ 858.099586] vfs_open+0x105/0x220 [ 858.103023] path_openat+0x628/0x2970 [ 858.106878] ? path_lookupat+0x780/0x780 [ 858.110952] ? trace_hardirqs_on+0x10/0x10 [ 858.115278] do_filp_open+0x179/0x3c0 [ 858.119080] ? may_open_dev+0xe0/0xe0 [ 858.122886] ? lock_downgrade+0x740/0x740 [ 858.127115] ? do_raw_spin_unlock+0x164/0x220 [ 858.131665] ? _raw_spin_unlock+0x29/0x40 [ 858.135870] ? __alloc_fd+0x1be/0x490 [ 858.139669] do_sys_open+0x296/0x410 [ 858.143386] ? filp_open+0x60/0x60 [ 858.146986] ? do_syscall_64+0x4c/0x640 [ 858.150971] ? compat_SyS_openat+0x30/0x30 [ 858.155256] do_syscall_64+0x1d5/0x640 [ 858.159146] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.164340] [ 858.164340] Showing all locks held in the system: [ 858.170709] 1 lock held by khungtaskd/1526: [ 858.175194] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 858.184352] 1 lock held by in:imklog/7656: [ 858.188644] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 858.197145] 2 locks held by syz-executor686/7984: [ 858.201973] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 858.210431] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 858.220570] [ 858.222202] ============================================= [ 858.222202] [ 858.229294] NMI backtrace for cpu 0 [ 858.232915] CPU: 0 PID: 1526 Comm: khungtaskd Not tainted 4.14.299-syzkaller #0 [ 858.240348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.249700] Call Trace: [ 858.252323] dump_stack+0x1b2/0x281 [ 858.255933] nmi_cpu_backtrace.cold+0x57/0x93 [ 858.260424] ? irq_force_complete_move+0x350/0x350 [ 858.265345] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 858.270618] watchdog+0x5b9/0xb40 [ 858.274063] ? hungtask_pm_notify+0x50/0x50 [ 858.278378] kthread+0x30d/0x420 [ 858.281729] ? kthread_create_on_node+0xd0/0xd0 [ 858.286381] ret_from_fork+0x24/0x30 [ 858.290217] Sending NMI from CPU 0 to CPUs 1: [ 858.295113] NMI backtrace for cpu 1 [ 858.295117] CPU: 1 PID: 4620 Comm: systemd-journal Not tainted 4.14.299-syzkaller #0 [ 858.295121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.295124] task: ffff8880a15ee040 task.stack: ffff8880a15f0000 [ 858.295127] RIP: 0010:lock_release+0x274/0x870 [ 858.295130] RSP: 0018:ffff8880a15f7958 EFLAGS: 00000046 [ 858.295135] RAX: 0000000000000007 RBX: 1ffff110142bef2e RCX: 0000000000000000 [ 858.295138] RDX: ffff8880a15ee8c8 RSI: ffff88813fffbc58 RDI: ffff8880a15ee8ec [ 858.295142] RBP: ffff88813fffbc58 R08: ffffffff8b9bd0e0 R09: 0000000000000001 [ 858.295145] R10: 0000000000000000 R11: 0000000000000100 R12: ffffffff816ac0dc [ 858.295149] R13: ffffffff8becbdc0 R14: ffff8880a15ee040 R15: 0000000000000001 [ 858.295153] FS: 00007f42bba7f8c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 858.295156] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 858.295159] CR2: 00007f42b8e4c000 CR3: 00000000a19bf000 CR4: 00000000003406e0 [ 858.295162] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 858.295165] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 858.295167] Call Trace: [ 858.295169] ? lock_downgrade+0x740/0x740 [ 858.295171] _raw_spin_unlock+0x17/0x40 [ 858.295174] get_page_from_freelist+0x14cc/0x25a0 [ 858.295176] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.295179] __alloc_pages_nodemask+0x352/0x2900 [ 858.295181] ? kasan_kmalloc+0x139/0x160 [ 858.295183] ? __lock_acquire+0x5fc/0x3f20 [ 858.295185] ? kasan_kmalloc+0x139/0x160 [ 858.295188] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 858.295190] ? trace_hardirqs_on+0x10/0x10 [ 858.295193] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.295195] ? __put_seccomp_filter+0x90/0x90 [ 858.295198] ? trace_hardirqs_on+0x10/0x10 [ 858.295200] ? __lock_acquire+0x5fc/0x3f20 [ 858.295202] cache_grow_begin+0x91/0x700 [ 858.295205] ? fs_reclaim_release+0xd0/0x110 [ 858.295207] ? check_preemption_disabled+0x35/0x240 [ 858.295210] cache_alloc_refill+0x273/0x350 [ 858.295212] kmem_cache_alloc+0x333/0x3c0 [ 858.295214] getname_flags+0xc8/0x550 [ 858.295216] user_path_at_empty+0x2a/0x50 [ 858.295218] SyS_faccessat+0x21b/0x680 [ 858.295221] ? SyS_fallocate+0x80/0x80 [ 858.295223] ? do_syscall_64+0x4c/0x640 [ 858.295225] ? SyS_faccessat+0x680/0x680 [ 858.295227] do_syscall_64+0x1d5/0x640 [ 858.295230] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.295231] Code: 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 0f b6 0c 01 48 89 f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 50 05 00 00 8b 4a 24 <85> c9 0f 85 a7 f0 c0 05 48 8d 7a 22 48 b8 00 00 00 00 00 fc ff [ 858.295757] Kernel panic - not syncing: hung_task: blocked tasks [ 858.549205] CPU: 0 PID: 1526 Comm: khungtaskd Not tainted 4.14.299-syzkaller #0 [ 858.556629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.565956] Call Trace: [ 858.568529] dump_stack+0x1b2/0x281 [ 858.572224] panic+0x1f9/0x42d [ 858.575497] ? add_taint.cold+0x16/0x16 [ 858.579452] ? printk_safe_flush+0xa9/0x110 [ 858.583773] watchdog+0x5ca/0xb40 [ 858.587215] ? hungtask_pm_notify+0x50/0x50 [ 858.591538] kthread+0x30d/0x420 [ 858.594899] ? kthread_create_on_node+0xd0/0xd0 [ 858.599556] ret_from_fork+0x24/0x30 [ 858.603596] Kernel Offset: disabled [ 858.607211] Rebooting in 86400 seconds..