Warning: Permanently added '10.128.1.64' (ECDSA) to the list of known hosts. executing program [ 717.083038] INFO: task syz-executor633:8117 blocked for more than 140 seconds. [ 717.090456] Not tainted 4.19.211-syzkaller #0 [ 717.095833] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.103958] syz-executor633 D28248 8117 8112 0x00000004 [ 717.109563] Call Trace: [ 717.112127] __schedule+0x887/0x2040 [ 717.115879] ? io_schedule_timeout+0x140/0x140 [ 717.120453] ? _raw_spin_unlock+0x29/0x40 [ 717.124631] schedule+0x8d/0x1b0 [ 717.127992] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.133731] ? fuse_do_ioctl+0x1850/0x1850 [ 717.137957] ? wait_woken+0x250/0x250 [ 717.141732] ? fuse_writepage_locked+0xb63/0x1010 [ 717.146626] ? fuse_writepage_locked+0x1010/0x1010 [ 717.151545] fuse_launder_page+0xb6/0xe0 [ 717.155634] invalidate_inode_pages2_range+0x795/0x1110 [ 717.160993] ? clear_shadow_entry+0x170/0x170 [ 717.165533] ? fuse_file_alloc+0x1d9/0x270 [ 717.169762] ? do_raw_spin_unlock+0x171/0x230 [ 717.174286] ? _raw_spin_unlock+0x29/0x40 [ 717.178433] ? fuse_do_open+0x1c4/0x500 [ 717.182385] fuse_finish_open+0x2e2/0x590 [ 717.186565] fuse_open_common+0x254/0x2c0 [ 717.190703] do_dentry_open+0x4aa/0x1160 [ 717.194799] ? fuse_open_common+0x2c0/0x2c0 [ 717.199109] ? inode_permission.part.0+0x10c/0x450 [ 717.204068] ? chown_common+0x550/0x550 [ 717.208035] ? inode_permission+0x3d/0x140 [ 717.212246] path_openat+0x793/0x2df0 [ 717.216085] ? path_lookupat+0x8d0/0x8d0 [ 717.220137] ? mark_held_locks+0xf0/0xf0 [ 717.224237] do_filp_open+0x18c/0x3f0 [ 717.228032] ? may_open_dev+0xf0/0xf0 [ 717.231810] ? lock_downgrade+0x720/0x720 [ 717.235982] ? lock_acquire+0x170/0x3c0 [ 717.239973] ? __alloc_fd+0x34/0x570 [ 717.243724] ? do_raw_spin_unlock+0x171/0x230 [ 717.248208] ? _raw_spin_unlock+0x29/0x40 [ 717.252332] ? __alloc_fd+0x28d/0x570 [ 717.256156] do_sys_open+0x3b3/0x520 [ 717.259869] ? filp_open+0x70/0x70 [ 717.263443] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.268797] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.273857] ? do_syscall_64+0x21/0x620 [ 717.277825] do_syscall_64+0xf9/0x620 [ 717.281603] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.286825] RIP: 0033:0x7f4a16d174c9 [ 717.290528] Code: Bad RIP value. [ 717.293916] RSP: 002b:00007f4a16ca72f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.301612] RAX: ffffffffffffffda RBX: 00007f4a16da84d0 RCX: 00007f4a16d174c9 [ 717.308912] RDX: 00007f4a16d174c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 717.316331] RBP: 00007f4a16d75164 R08: 0000000000000000 R09: 0000000000000000 [ 717.323630] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.330895] R13: 00007f4a16d71158 R14: 00007f4a16d73160 R15: 00007f4a16da84d8 [ 717.338218] [ 717.338218] Showing all locks held in the system: [ 717.344585] 1 lock held by khungtaskd/1571: [ 717.348880] #0: 0000000017d2c110 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.357522] 2 locks held by syz-executor633/8117: [ 717.362363] #0: 00000000c624b761 (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 717.370370] #1: 0000000089a47371 (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 717.379950] [ 717.381564] ============================================= [ 717.381564] [ 717.388625] NMI backtrace for cpu 0 [ 717.392243] CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.399666] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 717.409005] Call Trace: [ 717.411569] dump_stack+0x1fc/0x2ef [ 717.415178] nmi_cpu_backtrace.cold+0x63/0xa2 [ 717.419659] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.424140] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 717.429401] watchdog+0x991/0xe60 [ 717.432835] ? reset_hung_task_detector+0x30/0x30 [ 717.437663] kthread+0x33f/0x460 [ 717.441005] ? kthread_park+0x180/0x180 [ 717.444957] ret_from_fork+0x24/0x30 [ 717.448715] Sending NMI from CPU 0 to CPUs 1: [ 717.453481] NMI backtrace for cpu 1 [ 717.453487] CPU: 1 PID: 52 Comm: kworker/1:1 Not tainted 4.19.211-syzkaller #0 [ 717.453492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 717.453495] Workqueue: events cache_reap [ 717.453501] RIP: 0010:free_block+0x21b/0x230 [ 717.453511] Code: 8b 47 78 41 8b 97 80 00 00 00 49 83 6f 70 01 49 83 6f 68 01 48 39 d0 76 09 49 8b 57 58 49 39 d5 75 90 48 83 c4 20 5b 5d 41 5c <41> 5d 41 5e 41 5f c3 4d 89 66 20 4c 89 e6 e9 0c ff ff ff 66 90 8b [ 717.453514] RSP: 0018:ffff8880b5177c60 EFLAGS: 00000086 [ 717.453521] RAX: 00000000000000fd RBX: ffff8880ba133af8 RCX: 000000000000001f [ 717.453525] RDX: ffff88813bff1358 RSI: ffffea00029cd5c8 RDI: ffff88813bff1340 [ 717.453530] RBP: 0000000000000018 R08: 00000000029b7a00 R09: 0000000000000000 [ 717.453534] R10: 0000000000000007 R11: 0000000000000000 R12: 0000000000000018 [ 717.453539] R13: ffff88813bff1358 R14: ffffea00029b7a00 R15: ffff88813bff1300 [ 717.453544] FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 717.453548] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 717.453552] CR2: 00007f84a923a008 CR3: 00000000a0846000 CR4: 00000000003406e0 [ 717.453557] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 717.453561] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 717.453564] Call Trace: [ 717.453567] drain_array_locked+0x30/0x80 [ 717.453570] drain_array+0x80/0xa0 [ 717.453572] cache_reap+0x150/0x270 [ 717.453576] process_one_work+0x864/0x1570 [ 717.453579] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 717.453582] worker_thread+0x64c/0x1130 [ 717.453585] ? __kthread_parkme+0x133/0x1e0 [ 717.453589] ? process_one_work+0x1570/0x1570 [ 717.453591] kthread+0x33f/0x460 [ 717.453594] ? kthread_park+0x180/0x180 [ 717.453597] ret_from_fork+0x24/0x30 [ 717.454256] Kernel panic - not syncing: hung_task: blocked tasks [ 717.630992] CPU: 0 PID: 1571 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.638415] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 717.647742] Call Trace: [ 717.650311] dump_stack+0x1fc/0x2ef [ 717.653920] panic+0x26a/0x50e [ 717.657088] ? __warn_printk+0xf3/0xf3 [ 717.660953] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.666036] ? cpumask_next+0x3c/0x40 [ 717.669818] ? printk_safe_flush+0xd6/0x120 [ 717.674125] ? watchdog+0x991/0xe60 [ 717.677744] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 717.683178] watchdog+0x9a2/0xe60 [ 717.686614] ? reset_hung_task_detector+0x30/0x30 [ 717.691443] kthread+0x33f/0x460 [ 717.694797] ? kthread_park+0x180/0x180 [ 717.698751] ret_from_fork+0x24/0x30 [ 717.702666] Kernel Offset: disabled [ 717.706286] Rebooting in 86400 seconds..