Warning: Permanently added '10.128.1.171' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 857.974740] INFO: task syz-executor230:7988 blocked for more than 140 seconds. [ 857.982241] Not tainted 4.14.301-syzkaller #0 [ 857.988248] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 857.996975] syz-executor230 D27968 7988 7986 0x00000004 [ 858.002594] Call Trace: [ 858.005227] __schedule+0x88b/0x1de0 [ 858.008951] ? lock_acquire+0x170/0x3f0 [ 858.012919] ? io_schedule_timeout+0x140/0x140 [ 858.017560] ? _raw_spin_unlock+0x29/0x40 [ 858.021720] ? fuse_writepage_locked+0xe80/0xe80 [ 858.026526] schedule+0x8d/0x1b0 [ 858.029905] fuse_wait_on_page_writeback.isra.0+0xdc/0x120 [ 858.035754] ? fuse_do_ioctl+0x1570/0x1570 [ 858.040039] ? end_page_writeback+0xe3/0x1c0 [ 858.044437] ? wait_woken+0x230/0x230 [ 858.048298] fuse_launder_page+0xa2/0xd0 [ 858.052371] invalidate_inode_pages2_range+0x547/0xc00 [ 858.057713] ? clear_shadow_entry+0x160/0x160 [ 858.062221] ? fuse_range_is_writeback+0x1f0/0x1f0 [ 858.067199] ? fuse_file_alloc+0x1ca/0x260 [ 858.071456] ? _raw_spin_unlock+0x29/0x40 [ 858.075676] ? fuse_do_open+0x18e/0x460 [ 858.079662] fuse_finish_open+0x262/0x500 [ 858.083803] fuse_open_common+0x234/0x290 [ 858.088008] do_dentry_open+0x44b/0xec0 [ 858.093210] ? fuse_open_common+0x290/0x290 [ 858.097954] ? __inode_permission+0xcd/0x2f0 [ 858.102367] vfs_open+0x105/0x220 [ 858.106123] path_openat+0x628/0x2970 [ 858.109945] ? path_lookupat+0x780/0x780 [ 858.114015] ? trace_hardirqs_on+0x10/0x10 [ 858.118332] do_filp_open+0x179/0x3c0 [ 858.122147] ? may_open_dev+0xe0/0xe0 [ 858.126010] ? lock_downgrade+0x740/0x740 [ 858.130170] ? do_raw_spin_unlock+0x164/0x220 [ 858.134734] ? _raw_spin_unlock+0x29/0x40 [ 858.138997] ? __alloc_fd+0x1be/0x490 [ 858.142795] do_sys_open+0x296/0x410 [ 858.146566] ? filp_open+0x60/0x60 [ 858.150214] ? do_syscall_64+0x4c/0x640 [ 858.154179] ? compat_SyS_openat+0x30/0x30 [ 858.158476] do_syscall_64+0x1d5/0x640 [ 858.162379] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.167629] RIP: 0033:0x7fab5753a4c9 [ 858.171340] RSP: 002b:00007fab574eb2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 858.179115] RAX: ffffffffffffffda RBX: 00007fab575cb4c0 RCX: 00007fab5753a4c9 [ 858.186458] RDX: 00007fab5753a4c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 858.193733] RBP: 00007fab57598164 R08: 0000000000000000 R09: 0000000000000000 [ 858.201059] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 858.208391] R13: 00007fab57594158 R14: 00007fab57596160 R15: 00007fab575cb4c8 [ 858.215842] [ 858.215842] Showing all locks held in the system: [ 858.222169] 1 lock held by khungtaskd/1532: [ 858.226592] #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a [ 858.235744] 1 lock held by in:imklog/7671: [ 858.239980] #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0x1fb/0x2b0 [ 858.248598] 2 locks held by syz-executor230/7988: [ 858.253436] #0: (sb_writers#10){.+.+}, at: [] mnt_want_write+0x3a/0xb0 [ 858.261969] #1: (&sb->s_type->i_mutex_key#17){+.+.}, at: [] fuse_open_common+0x1a4/0x290 [ 858.272122] [ 858.273760] ============================================= [ 858.273760] [ 858.281052] NMI backtrace for cpu 0 [ 858.284765] CPU: 0 PID: 1532 Comm: khungtaskd Not tainted 4.14.301-syzkaller #0 [ 858.292221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.301563] Call Trace: [ 858.304141] dump_stack+0x1b2/0x281 [ 858.307759] nmi_cpu_backtrace.cold+0x57/0x93 [ 858.312246] ? irq_force_complete_move+0x350/0x350 [ 858.317185] nmi_trigger_cpumask_backtrace+0x13a/0x180 [ 858.322474] watchdog+0x5b9/0xb40 [ 858.325929] ? hungtask_pm_notify+0x50/0x50 [ 858.330338] kthread+0x30d/0x420 [ 858.333693] ? kthread_create_on_node+0xd0/0xd0 [ 858.338369] ret_from_fork+0x24/0x30 [ 858.342163] Sending NMI from CPU 0 to CPUs 1: [ 858.347095] NMI backtrace for cpu 1 [ 858.347102] CPU: 1 PID: 4627 Comm: systemd-journal Not tainted 4.14.301-syzkaller #0 [ 858.347108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.347113] task: ffff8880a1164200 task.stack: ffff8880a1168000 [ 858.347116] RIP: 0010:___bpf_prog_run+0x25ea/0x5630 [ 858.347120] RSP: 0018:ffff8880a116fa48 EFLAGS: 00000246 [ 858.347128] RAX: 1ffffffff0f1e2dd RBX: dffffc0000000000 RCX: ffff8880a116fe68 [ 858.347133] RDX: 0000000000000000 RSI: ffffc90001a82030 RDI: ffffffff878f16e8 [ 858.347138] RBP: ffff8880a116fb58 R08: 0000000000000000 R09: 0000000000000000 [ 858.347143] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff878f1640 [ 858.347148] R13: 1ffff1101422df50 R14: ffffc90001a82118 R15: 0000000000000015 [ 858.347154] FS: 00007f023a5cc8c0(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 858.347158] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 858.347163] CR2: 00007f0237999020 CR3: 00000000a10fa000 CR4: 00000000003406e0 [ 858.347168] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 858.347174] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 858.347176] Call Trace: [ 858.347179] ? bpf_jit_compile+0x30/0x30 [ 858.347182] ? __bpf_prog_run32+0x7c/0xa0 [ 858.347186] ? __bpf_prog_run64+0xb0/0xb0 [ 858.347189] ? trace_hardirqs_on+0x10/0x10 [ 858.347192] ? __lock_acquire+0x5fc/0x3f20 [ 858.347196] ? seccomp_run_filters+0xfb/0x540 [ 858.347199] ? __put_seccomp_filter+0x90/0x90 [ 858.347203] ? wait_for_completion_io+0x10/0x10 [ 858.347206] ? trace_hardirqs_on+0x10/0x10 [ 858.347209] ? __lock_acquire+0x5fc/0x3f20 [ 858.347213] ? __seccomp_filter+0x7e/0xdd0 [ 858.347216] ? seccomp_send_sigsys+0x180/0x180 [ 858.347219] ? __might_fault+0x104/0x1b0 [ 858.347223] ? trace_hardirqs_on+0x10/0x10 [ 858.347226] ? lock_acquire+0x170/0x3f0 [ 858.347229] ? lock_downgrade+0x740/0x740 [ 858.347232] ? __secure_computing+0x1f6/0x450 [ 858.347236] ? syscall_trace_enter+0x359/0xc20 [ 858.347240] ? syscall_slow_exit_work+0x560/0x560 [ 858.347243] ? do_syscall_64+0x4c/0x640 [ 858.347246] ? do_syscall_64+0x41b/0x640 [ 858.347250] ? entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 858.347252] Code: ea 03 0f b6 0c 1a 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 fb 1d 00 00 41 03 46 04 49 83 c6 08 49 89 07 e9 8d da ff ff 71 ca f6 ff 49 8d 7e 01 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 [ 858.347721] Kernel panic - not syncing: hung_task: blocked tasks [ 858.580817] CPU: 0 PID: 1532 Comm: khungtaskd Not tainted 4.14.301-syzkaller #0 [ 858.588341] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 858.597678] Call Trace: [ 858.600262] dump_stack+0x1b2/0x281 [ 858.603878] panic+0x1f9/0x42d [ 858.607059] ? add_taint.cold+0x16/0x16 [ 858.611024] watchdog+0x5ca/0xb40 [ 858.614502] ? hungtask_pm_notify+0x50/0x50 [ 858.618818] kthread+0x30d/0x420 [ 858.622291] ? kthread_create_on_node+0xd0/0xd0 [ 858.626954] ret_from_fork+0x24/0x30 [ 858.630957] Kernel Offset: disabled [ 858.634586] Rebooting in 86400 seconds..