Warning: Permanently added '10.128.0.177' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 717.548421] INFO: task syz-executor994:8099 blocked for more than 140 seconds. [ 717.555845] Not tainted 4.19.211-syzkaller #0 [ 717.562428] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.570661] syz-executor994 D28248 8099 8094 0x00000004 [ 717.576298] Call Trace: [ 717.579209] __schedule+0x887/0x2040 [ 717.582928] ? io_schedule_timeout+0x140/0x140 [ 717.587493] ? _raw_spin_unlock+0x29/0x40 [ 717.591933] schedule+0x8d/0x1b0 [ 717.595302] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.601373] ? fuse_do_ioctl+0x1850/0x1850 [ 717.605622] ? wait_woken+0x250/0x250 [ 717.609726] ? fuse_writepage_locked+0xb63/0x1010 [ 717.614570] ? fuse_writepage_locked+0x1010/0x1010 [ 717.619778] fuse_launder_page+0xb6/0xe0 [ 717.623841] invalidate_inode_pages2_range+0x795/0x1110 [ 717.629527] ? clear_shadow_entry+0x170/0x170 [ 717.634026] ? fuse_file_alloc+0x1d9/0x270 [ 717.638249] ? do_raw_spin_unlock+0x171/0x230 [ 717.643142] ? _raw_spin_unlock+0x29/0x40 [ 717.647301] ? fuse_do_open+0x1c4/0x500 [ 717.651549] fuse_finish_open+0x2e2/0x590 [ 717.655699] fuse_open_common+0x254/0x2c0 [ 717.660100] do_dentry_open+0x4aa/0x1160 [ 717.664159] ? fuse_open_common+0x2c0/0x2c0 [ 717.668961] ? inode_permission.part.0+0x10c/0x450 [ 717.673878] ? chown_common+0x550/0x550 [ 717.677836] ? inode_permission+0x3d/0x140 [ 717.682423] path_openat+0x793/0x2df0 [ 717.686234] ? path_lookupat+0x8d0/0x8d0 [ 717.690554] ? mark_held_locks+0xf0/0xf0 [ 717.694620] do_filp_open+0x18c/0x3f0 [ 717.698661] ? may_open_dev+0xf0/0xf0 [ 717.702467] ? lock_downgrade+0x720/0x720 [ 717.706600] ? lock_acquire+0x170/0x3c0 [ 717.710834] ? __alloc_fd+0x34/0x570 [ 717.714546] ? do_raw_spin_unlock+0x171/0x230 [ 717.719289] ? _raw_spin_unlock+0x29/0x40 [ 717.723437] ? __alloc_fd+0x28d/0x570 [ 717.727225] do_sys_open+0x3b3/0x520 [ 717.731209] ? filp_open+0x70/0x70 [ 717.734748] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.740366] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.745380] ? do_syscall_64+0x21/0x620 [ 717.749603] do_syscall_64+0xf9/0x620 [ 717.753406] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.758829] RIP: 0033:0x7f29dd6434c9 [ 717.762540] Code: Bad RIP value. [ 717.765884] RSP: 002b:00007f29dd5d32f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.773853] RAX: ffffffffffffffda RBX: 00007f29dd6d44d0 RCX: 00007f29dd6434c9 [ 717.781304] RDX: 00007f29dd6434c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 717.788853] RBP: 00007f29dd6a1164 R08: 0000000000000000 R09: 0000000000000000 [ 717.796123] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.803643] R13: 00007f29dd69d158 R14: 00007f29dd69f160 R15: 00007f29dd6d44d8 [ 717.811140] [ 717.811140] Showing all locks held in the system: [ 717.817463] 1 lock held by khungtaskd/1570: [ 717.822126] #0: 000000007e56b580 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.830960] 1 lock held by in:imklog/7798: [ 717.835184] #0: 000000009af91d1e (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 717.843482] 2 locks held by syz-executor994/8099: [ 717.848556] #0: 00000000289a851f (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 717.856539] #1: 0000000050b7a538 (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 717.866130] [ 717.867755] ============================================= [ 717.867755] [ 717.875138] NMI backtrace for cpu 1 [ 717.878843] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.886293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 717.895625] Call Trace: [ 717.898202] dump_stack+0x1fc/0x2ef [ 717.901814] nmi_cpu_backtrace.cold+0x63/0xa2 [ 717.906290] ? lapic_can_unplug_cpu+0x80/0x80 [ 717.910765] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 717.916027] watchdog+0x991/0xe60 [ 717.919465] ? reset_hung_task_detector+0x30/0x30 [ 717.924292] kthread+0x33f/0x460 [ 717.927647] ? kthread_park+0x180/0x180 [ 717.931604] ret_from_fork+0x24/0x30 [ 717.935386] Sending NMI from CPU 1 to CPUs 0: [ 717.940426] NMI backtrace for cpu 0 [ 717.940432] CPU: 0 PID: 10 Comm: rcu_preempt Not tainted 4.19.211-syzkaller #0 [ 717.940438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 717.940442] RIP: 0010:__lock_acquire+0xbed/0x3ff0 [ 717.940453] Code: db 74 55 48 83 eb 08 74 4f 48 bd 00 00 00 00 00 fc ff df eb 06 48 83 eb 08 74 3d 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 8c 1e 00 00 4c 3b 63 18 0f 84 f1 fc ff ff 48 8d 7b 08 48 89 [ 717.940457] RSP: 0018:ffff8880b5a67980 EFLAGS: 00000046 [ 717.940464] RAX: 1ffffffff18e4be3 RBX: ffffffff8c725f00 RCX: 0000000000000ff8 [ 717.940469] RDX: 1ffffffff19a3ea0 RSI: 000000008dae0b10 RDI: ffffffff8c725f18 [ 717.940474] RBP: dffffc0000000000 R08: ffffffff8cd1f500 R09: 0000000000000000 [ 717.940479] R10: ffff8880b5a4eb08 R11: 0000000000000000 R12: a8b925c7f0ce6f64 [ 717.940484] R13: ffff8880b5a4e280 R14: ffff8880b5a4eb20 R15: 0000000000000001 [ 717.940490] FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 717.940494] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 717.940499] CR2: 00007fa874eb4018 CR3: 00000000a106f000 CR4: 00000000003406f0 [ 717.940504] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 717.940509] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 717.940512] Call Trace: [ 717.940515] ? lock_acquire+0x170/0x3c0 [ 717.940519] ? debug_object_deactivate+0xfc/0x2e0 [ 717.940523] ? mark_held_locks+0xf0/0xf0 [ 717.940526] ? trace_hardirqs_off+0x64/0x200 [ 717.940530] ? mark_held_locks+0xf0/0xf0 [ 717.940534] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 717.940538] ? debug_object_deactivate+0x1f9/0x2e0 [ 717.940541] ? try_to_del_timer_sync+0xbf/0x110 [ 717.940545] ? lock_downgrade+0x720/0x720 [ 717.940548] lock_acquire+0x170/0x3c0 [ 717.940552] ? __free_object+0x17/0x1e0 [ 717.940555] ? debug_object_free+0x52/0x380 [ 717.940559] _raw_spin_lock_irqsave+0x8c/0xc0 [ 717.940562] ? __free_object+0x17/0x1e0 [ 717.940565] __free_object+0x17/0x1e0 [ 717.940569] debug_object_free+0x1cc/0x380 [ 717.940572] schedule_timeout+0x4e6/0xfe0 [ 717.940576] ? prepare_to_swait_event+0x5b/0x540 [ 717.940580] ? usleep_range+0x170/0x170 [ 717.940584] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.940587] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 717.940591] ? collect_expired_timers+0x2a0/0x2a0 [ 717.940594] ? swake_up_all+0x340/0x340 [ 717.940598] rcu_gp_kthread+0xdad/0x21c0 [ 717.940601] ? lock_acquire+0x170/0x3c0 [ 717.940605] ? __rcu_read_unlock+0x160/0x160 [ 717.940609] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 717.940613] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 717.940617] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 717.940620] ? __kthread_parkme+0x133/0x1e0 [ 717.940624] ? __rcu_read_unlock+0x160/0x160 [ 717.940627] kthread+0x33f/0x460 [ 717.940630] ? kthread_park+0x180/0x180 [ 717.940634] ret_from_fork+0x24/0x30 [ 717.940977] Kernel panic - not syncing: hung_task: blocked tasks [ 718.216822] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.224244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 718.233575] Call Trace: [ 718.236262] dump_stack+0x1fc/0x2ef [ 718.239879] panic+0x26a/0x50e [ 718.243059] ? __warn_printk+0xf3/0xf3 [ 718.246941] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.251419] ? ___preempt_schedule+0x16/0x18 [ 718.255822] ? watchdog+0x991/0xe60 [ 718.259434] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.264864] watchdog+0x9a2/0xe60 [ 718.268306] ? reset_hung_task_detector+0x30/0x30 [ 718.273136] kthread+0x33f/0x460 [ 718.276481] ? kthread_park+0x180/0x180 [ 718.280440] ret_from_fork+0x24/0x30 [ 718.284402] Kernel Offset: disabled [ 718.288020] Rebooting in 86400 seconds..