Warning: Permanently added '10.128.10.15' (ECDSA) to the list of known hosts. executing program [ 717.551298] INFO: task syz-executor252:8105 blocked for more than 140 seconds. [ 717.558874] Not tainted 4.19.211-syzkaller #0 [ 717.565433] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.573730] syz-executor252 D27656 8105 8103 0x00000004 [ 717.579403] Call Trace: [ 717.582167] __schedule+0x887/0x2040 [ 717.585904] ? io_schedule_timeout+0x140/0x140 [ 717.590527] ? _raw_spin_unlock+0x29/0x40 [ 717.594753] schedule+0x8d/0x1b0 [ 717.598145] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.604057] ? fuse_do_ioctl+0x1850/0x1850 [ 717.608391] ? wait_woken+0x250/0x250 [ 717.612246] ? fuse_writepage_locked+0xb63/0x1010 [ 717.617208] ? fuse_writepage_locked+0x1010/0x1010 [ 717.622224] fuse_launder_page+0xb6/0xe0 [ 717.626298] invalidate_inode_pages2_range+0x795/0x1110 [ 717.634438] ? clear_shadow_entry+0x170/0x170 [ 717.639133] ? fuse_file_alloc+0x1d9/0x270 [ 717.643485] ? do_raw_spin_unlock+0x171/0x230 [ 717.647997] ? _raw_spin_unlock+0x29/0x40 [ 717.652461] ? fuse_do_open+0x1c4/0x500 [ 717.656443] fuse_finish_open+0x2e2/0x590 [ 717.660639] fuse_open_common+0x254/0x2c0 [ 717.664839] do_dentry_open+0x4aa/0x1160 [ 717.669079] ? fuse_open_common+0x2c0/0x2c0 [ 717.673452] ? inode_permission.part.0+0x10c/0x450 [ 717.678387] ? chown_common+0x550/0x550 [ 717.682417] ? inode_permission+0x3d/0x140 [ 717.686670] path_openat+0x793/0x2df0 [ 717.690462] ? path_lookupat+0x8d0/0x8d0 [ 717.694569] ? mark_held_locks+0xf0/0xf0 [ 717.698667] do_filp_open+0x18c/0x3f0 [ 717.702534] ? may_open_dev+0xf0/0xf0 [ 717.706354] ? lock_downgrade+0x720/0x720 [ 717.710504] ? lock_acquire+0x170/0x3c0 [ 717.714535] ? __alloc_fd+0x34/0x570 [ 717.718269] ? do_raw_spin_unlock+0x171/0x230 [ 717.722831] ? _raw_spin_unlock+0x29/0x40 [ 717.727164] ? __alloc_fd+0x28d/0x570 [ 717.730955] do_sys_open+0x3b3/0x520 [ 717.734804] ? filp_open+0x70/0x70 [ 717.738360] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.743780] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.748819] ? do_syscall_64+0x21/0x620 [ 717.752926] do_syscall_64+0xf9/0x620 [ 717.756736] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.761968] RIP: 0033:0x7fdac10e74c9 [ 717.765686] Code: Bad RIP value. [ 717.769039] RSP: 002b:00007fdac10982f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 717.776933] RAX: ffffffffffffffda RBX: 00007fdac11784c0 RCX: 00007fdac10e74c9 [ 717.784259] RDX: 0000000000000000 RSI: 0000000000000700 RDI: 0000000020000100 [ 717.791593] RBP: 00007fdac1145164 R08: 0000000000000000 R09: 0000000000000000 [ 717.798886] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.806302] R13: 00007fdac1141158 R14: 00007fdac1143160 R15: 00007fdac11784c8 [ 717.813648] [ 717.813648] Showing all locks held in the system: [ 717.819971] 1 lock held by khungtaskd/1570: [ 717.824325] #0: 00000000d7b1ca2c (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.833064] 1 lock held by in:imklog/7798: [ 717.837291] #0: 00000000cde06e0d (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 717.845455] 2 locks held by syz-executor252/8105: [ 717.850298] #0: 00000000fb86d8c3 (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 717.858343] #1: 00000000c90c4c7c (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 717.868286] [ 717.869964] ============================================= [ 717.869964] [ 717.877274] NMI backtrace for cpu 0 [ 717.880913] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.888354] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 717.897702] Call Trace: [ 717.900284] dump_stack+0x1fc/0x2ef [ 717.903901] nmi_cpu_backtrace.cold+0x63/0xa2 [ 717.908523] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.913097] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 717.918396] watchdog+0x991/0xe60 [ 717.922311] ? reset_hung_task_detector+0x30/0x30 [ 717.927286] kthread+0x33f/0x460 [ 717.930647] ? kthread_park+0x180/0x180 [ 717.934648] ret_from_fork+0x24/0x30 [ 717.938432] Sending NMI from CPU 0 to CPUs 1: [ 717.943351] NMI backtrace for cpu 1 [ 717.943357] CPU: 1 PID: 10 Comm: rcu_preempt Not tainted 4.19.211-syzkaller #0 [ 717.943363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 717.943366] RIP: 0010:del_timer_sync+0x2/0x270 [ 717.943376] Code: 5b 5d 41 5c 41 5d c3 41 bc ff ff ff ff eb b6 e8 84 e1 44 00 eb 91 e8 1d 25 e4 ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 41 54 <55> 53 48 89 fb e8 74 04 0f 00 48 c7 c0 80 82 f1 89 48 ba 00 00 00 [ 717.943380] RSP: 0018:ffff8880b5a67c38 EFLAGS: 00000246 [ 717.943388] RAX: 0000000080000000 RBX: 000000010000a227 RCX: 0000000000000000 [ 717.943392] RDX: 0000000000000004 RSI: 1ffff11016b4cf73 RDI: ffff8880b5a67cc0 [ 717.943397] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 717.943402] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880b5a67cc0 [ 717.943406] R13: 1ffff11016b4cf8e R14: ffff8880ba122b40 R15: 00000000ffffffff [ 717.943411] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 717.943415] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 717.943420] CR2: 00007f0e7ca82000 CR3: 00000000a1e58000 CR4: 00000000003406e0 [ 717.943425] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 717.943429] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 717.943432] Call Trace: [ 717.943435] schedule_timeout+0x4d7/0xfe0 [ 717.943439] ? prepare_to_swait_event+0x5b/0x540 [ 717.943442] ? usleep_range+0x170/0x170 [ 717.943445] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.943449] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 717.943452] ? collect_expired_timers+0x2a0/0x2a0 [ 717.943455] ? swake_up_all+0x340/0x340 [ 717.943458] rcu_gp_kthread+0xdad/0x21c0 [ 717.943462] ? lock_acquire+0x170/0x3c0 [ 717.943465] ? __rcu_read_unlock+0x160/0x160 [ 717.943469] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.943472] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 717.943476] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 717.943479] ? __kthread_parkme+0x133/0x1e0 [ 717.943482] ? __rcu_read_unlock+0x160/0x160 [ 717.943485] kthread+0x33f/0x460 [ 717.943488] ? kthread_park+0x180/0x180 [ 717.943491] ret_from_fork+0x24/0x30 [ 717.944021] Kernel panic - not syncing: hung_task: blocked tasks [ 718.158794] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.166222] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 718.175560] Call Trace: [ 718.178142] dump_stack+0x1fc/0x2ef [ 718.181755] panic+0x26a/0x50e [ 718.184941] ? __warn_printk+0xf3/0xf3 [ 718.188811] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.193900] ? cpumask_next+0x3c/0x40 [ 718.197685] ? printk_safe_flush+0xd6/0x120 [ 718.201994] ? watchdog+0x991/0xe60 [ 718.205606] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.211129] watchdog+0x9a2/0xe60 [ 718.214573] ? reset_hung_task_detector+0x30/0x30 [ 718.219400] kthread+0x33f/0x460 [ 718.222790] ? kthread_park+0x180/0x180 [ 718.226749] ret_from_fork+0x24/0x30 [ 718.230793] Kernel Offset: disabled [ 718.234415] Rebooting in 86400 seconds..