Warning: Permanently added '10.128.0.228' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 718.056427] INFO: task syz-executor477:8129 blocked for more than 140 seconds. [ 718.064290] Not tainted 4.19.193-syzkaller #0 [ 718.071349] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 718.080458] syz-executor477 D27800 8129 8127 0x00000004 [ 718.086569] Call Trace: [ 718.089435] __schedule+0x887/0x2040 [ 718.093410] ? io_schedule_timeout+0x140/0x140 [ 718.098181] ? _raw_spin_unlock+0x29/0x40 [ 718.102353] schedule+0x8d/0x1b0 [ 718.105714] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 718.112101] ? fuse_do_ioctl+0x1850/0x1850 [ 718.116444] ? wait_woken+0x250/0x250 [ 718.120417] ? fuse_writepage_locked+0xb63/0x1010 [ 718.125279] ? fuse_writepage_locked+0x1010/0x1010 [ 718.130297] fuse_launder_page+0xb6/0xe0 [ 718.134409] invalidate_inode_pages2_range+0x786/0x10f0 [ 718.140122] ? clear_shadow_entry+0x170/0x170 [ 718.144650] ? fuse_file_alloc+0x1d9/0x270 [ 718.150521] ? do_raw_spin_unlock+0x171/0x230 [ 718.155161] ? _raw_spin_unlock+0x29/0x40 [ 718.159406] ? fuse_do_open+0x1c4/0x500 [ 718.163418] fuse_finish_open+0x2e2/0x590 [ 718.167981] fuse_open_common+0x254/0x2c0 [ 718.172231] do_dentry_open+0x4aa/0x1160 [ 718.176571] ? fuse_open_common+0x2c0/0x2c0 [ 718.180914] ? inode_permission.part.0+0x10c/0x450 [ 718.185867] ? chown_common+0x550/0x550 [ 718.190094] ? inode_permission+0x3d/0x140 [ 718.194364] path_openat+0x793/0x2df0 [ 718.198247] ? path_lookupat+0x8d0/0x8d0 [ 718.202349] ? mark_held_locks+0xf0/0xf0 [ 718.206480] do_filp_open+0x18c/0x3f0 [ 718.210308] ? may_open_dev+0xf0/0xf0 [ 718.214106] ? lock_downgrade+0x720/0x720 [ 718.218324] ? lock_acquire+0x170/0x3c0 [ 718.222313] ? __alloc_fd+0x34/0x570 [ 718.226019] ? do_raw_spin_unlock+0x171/0x230 [ 718.230572] ? _raw_spin_unlock+0x29/0x40 [ 718.234736] ? __alloc_fd+0x28d/0x570 [ 718.238609] do_sys_open+0x3b3/0x520 [ 718.242373] ? filp_open+0x70/0x70 [ 718.245929] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.251359] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.256835] ? do_syscall_64+0x21/0x620 [ 718.260948] do_syscall_64+0xf9/0x620 [ 718.264896] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.270161] RIP: 0033:0x446399 [ 718.273589] Code: Bad RIP value. [ 718.277673] RSP: 002b:00007fa7cce382f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.285402] RAX: ffffffffffffffda RBX: 00000000004d34e0 RCX: 0000000000446399 [ 718.293059] RDX: 0000000000000000 RSI: 0000000000080380 RDI: 0000000020000100 [ 718.300534] RBP: 00000000004a3164 R08: 0000000000000000 R09: 0000000000000000 [ 718.308238] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 718.315529] R13: 000000000049f158 R14: 00000000004a1160 R15: 00000000004d34e8 [ 718.322897] [ 718.322897] Showing all locks held in the system: [ 718.329322] 1 lock held by khungtaskd/1569: [ 718.333631] #0: 0000000099af03af (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 718.342471] 2 locks held by in:imklog/7795: [ 718.346964] #0: 00000000bc4c3943 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 718.355153] #1: 00000000f32ed1a4 (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 [ 718.363214] 2 locks held by syz-executor477/8129: [ 718.368139] #0: 0000000030cf28e0 (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 718.376354] #1: 00000000d14a181b (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 718.386018] [ 718.387838] ============================================= [ 718.387838] [ 718.394871] NMI backtrace for cpu 0 [ 718.398595] CPU: 0 PID: 1569 Comm: khungtaskd Not tainted 4.19.193-syzkaller #0 [ 718.406092] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.415540] Call Trace: [ 718.418238] dump_stack+0x1fc/0x2ef [ 718.421852] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.426383] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.431034] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.436318] watchdog+0x991/0xe60 [ 718.439756] ? reset_hung_task_detector+0x30/0x30 [ 718.444582] kthread+0x33f/0x460 [ 718.448119] ? kthread_park+0x180/0x180 [ 718.452076] ret_from_fork+0x24/0x30 [ 718.455903] Sending NMI from CPU 0 to CPUs 1: [ 718.461159] NMI backtrace for cpu 1 [ 718.461165] CPU: 1 PID: 4685 Comm: systemd-journal Not tainted 4.19.193-syzkaller #0 [ 718.461170] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.461174] RIP: 0010:lock_acquire+0x139/0x3c0 [ 718.461184] Code: 00 c7 83 84 08 00 00 01 00 00 00 0f 1f 44 00 00 65 8b 05 ba 35 b6 7e 83 f8 07 0f 87 e2 01 00 00 89 c0 48 0f a3 05 8f 74 db 09 <0f> 82 95 01 00 00 4c 8b 4c 24 08 44 89 ea 6a 00 48 89 ef 6a 00 45 [ 718.461188] RSP: 0018:ffff8880a168fa48 EFLAGS: 00000097 [ 718.461195] RAX: 0000000000000001 RBX: ffff8880a16863c0 RCX: 0000000000000000 [ 718.461199] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a1686c44 [ 718.461204] RBP: ffff88813be79b18 R08: 0000000000000001 R09: 0000000000000000 [ 718.461208] R10: ffff88813be79b00 R11: 0000000000000000 R12: 0000000000000000 [ 718.461213] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 [ 718.461218] FS: 00007f41085828c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.461222] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.461226] CR2: 00007f4105953000 CR3: 00000000a1621000 CR4: 00000000001406e0 [ 718.461231] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.461236] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.461238] Call Trace: [ 718.461241] _raw_spin_lock+0x2a/0x40 [ 718.461244] ? ___cache_free+0x241/0x3a0 [ 718.461247] ___cache_free+0x241/0x3a0 [ 718.461250] qlist_free_all+0x79/0x140 [ 718.461253] quarantine_reduce+0x1a9/0x230 [ 718.461256] kasan_kmalloc+0xa2/0x160 [ 718.461259] ? mark_held_locks+0xf0/0xf0 [ 718.461263] ? seccomp_run_filters+0x18c/0x590 [ 718.461266] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 718.461269] ? __put_seccomp_filter+0xa0/0xa0 [ 718.461273] ? cache_alloc_refill+0x2f8/0x340 [ 718.461276] ? lock_downgrade+0x720/0x720 [ 718.461279] ? do_raw_spin_lock+0xcb/0x220 [ 718.461282] ? do_raw_spin_unlock+0x171/0x230 [ 718.461285] ? _raw_spin_unlock+0x29/0x40 [ 718.461288] ? cache_alloc_refill+0x2f8/0x340 [ 718.461292] ? kmem_cache_alloc+0x2b1/0x370 [ 718.461295] kmem_cache_alloc+0x110/0x370 [ 718.461298] getname_flags+0xce/0x590 [ 718.461301] do_sys_open+0x26c/0x520 [ 718.461304] ? filp_open+0x70/0x70 [ 718.461307] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.461311] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.461314] ? do_syscall_64+0x21/0x620 [ 718.461317] do_syscall_64+0xf9/0x620 [ 718.461320] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.461323] RIP: 0033:0x7f4107b11840 [ 718.461333] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 [ 718.461337] RSP: 002b:00007ffda7ccccd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.461344] RAX: ffffffffffffffda RBX: 00007ffda7cccfe0 RCX: 00007f4107b11840 [ 718.461349] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005611729636e0 [ 718.461353] RBP: 000000000000000d R08: 000000000000c0c1 R09: 00000000ffffffff [ 718.461358] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 718.461362] R13: 0000561172956040 R14: 00007ffda7cccfa0 R15: 0000561172963730 [ 718.462521] Kernel panic - not syncing: hung_task: blocked tasks [ 718.772447] CPU: 0 PID: 1569 Comm: khungtaskd Not tainted 4.19.193-syzkaller #0 [ 718.779875] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.789491] Call Trace: [ 718.792621] dump_stack+0x1fc/0x2ef [ 718.796270] panic+0x26a/0x50e [ 718.799477] ? __warn_printk+0xf3/0xf3 [ 718.803691] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.808231] ? ___preempt_schedule+0x16/0x18 [ 718.812669] ? watchdog+0x991/0xe60 [ 718.816285] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.821722] watchdog+0x9a2/0xe60 [ 718.825158] ? reset_hung_task_detector+0x30/0x30 [ 718.829982] kthread+0x33f/0x460 [ 718.833686] ? kthread_park+0x180/0x180 [ 718.837820] ret_from_fork+0x24/0x30 [ 718.843355] Kernel Offset: disabled [ 718.846985] Rebooting in 86400 seconds..