Warning: Permanently added '10.128.0.236' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 717.697034] INFO: task syz-executor381:8102 blocked for more than 140 seconds. [ 717.704493] Not tainted 4.19.211-syzkaller #0 [ 717.710210] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.718339] syz-executor381 D27368 8102 8100 0x00000004 [ 717.723975] Call Trace: [ 717.726549] __schedule+0x887/0x2040 [ 717.730445] ? io_schedule_timeout+0x140/0x140 [ 717.735048] ? _raw_spin_unlock+0x29/0x40 [ 717.739376] schedule+0x8d/0x1b0 [ 717.742746] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.748637] ? fuse_do_ioctl+0x1850/0x1850 [ 717.752871] ? wait_woken+0x250/0x250 [ 717.756662] ? fuse_writepage_locked+0xb63/0x1010 [ 717.761683] ? fuse_writepage_locked+0x1010/0x1010 [ 717.766607] fuse_launder_page+0xb6/0xe0 [ 717.770841] invalidate_inode_pages2_range+0x795/0x1110 [ 717.776211] ? clear_shadow_entry+0x170/0x170 [ 717.780907] ? fuse_file_alloc+0x1d9/0x270 [ 717.785146] ? do_raw_spin_unlock+0x171/0x230 [ 717.789818] ? _raw_spin_unlock+0x29/0x40 [ 717.793972] ? fuse_do_open+0x1c4/0x500 [ 717.798127] fuse_finish_open+0x2e2/0x590 [ 717.802274] fuse_open_common+0x254/0x2c0 [ 717.806404] do_dentry_open+0x4aa/0x1160 [ 717.810631] ? fuse_open_common+0x2c0/0x2c0 [ 717.814951] ? inode_permission.part.0+0x10c/0x450 [ 717.820053] ? chown_common+0x550/0x550 [ 717.824026] ? inode_permission+0x3d/0x140 [ 717.828435] path_openat+0x793/0x2df0 [ 717.832323] ? path_lookupat+0x8d0/0x8d0 [ 717.836369] ? mark_held_locks+0xf0/0xf0 [ 717.840603] do_filp_open+0x18c/0x3f0 [ 717.844399] ? may_open_dev+0xf0/0xf0 [ 717.848369] ? lock_downgrade+0x720/0x720 [ 717.852516] ? lock_acquire+0x170/0x3c0 [ 717.856470] ? __alloc_fd+0x34/0x570 [ 717.860371] ? do_raw_spin_unlock+0x171/0x230 [ 717.864868] ? _raw_spin_unlock+0x29/0x40 [ 717.869187] ? __alloc_fd+0x28d/0x570 [ 717.872991] do_sys_open+0x3b3/0x520 [ 717.876686] ? filp_open+0x70/0x70 [ 717.880417] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.885792] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.891049] ? do_syscall_64+0x21/0x620 [ 717.895026] do_syscall_64+0xf9/0x620 [ 717.899011] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.904201] RIP: 0033:0x7ff5bd80a4c9 [ 717.908068] Code: Bad RIP value. [ 717.911425] RSP: 002b:00007ff5bd7bb2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.919443] RAX: ffffffffffffffda RBX: 00007ff5bd89b4c0 RCX: 00007ff5bd80a4c9 [ 717.926705] RDX: 00007ff5bd80a4c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 717.934145] RBP: 00007ff5bd868164 R08: 0000000000000000 R09: 0000000000000000 [ 717.941573] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.948982] R13: 00007ff5bd864158 R14: 00007ff5bd866160 R15: 00007ff5bd89b4c8 [ 717.956326] [ 717.956326] Showing all locks held in the system: [ 717.962892] 1 lock held by khungtaskd/1570: [ 717.967382] #0: 0000000057f007c1 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.976006] 1 lock held by in:imklog/7799: [ 717.980401] #0: 0000000081900d84 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 [ 717.988581] 2 locks held by syz-executor381/8102: [ 717.993413] #0: 00000000a3be50de (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 718.001717] #1: 0000000030bf5b70 (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 718.011457] [ 718.013076] ============================================= [ 718.013076] [ 718.020536] NMI backtrace for cpu 1 [ 718.024165] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.031586] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.040916] Call Trace: [ 718.043484] dump_stack+0x1fc/0x2ef [ 718.047092] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.051565] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.056039] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.061302] watchdog+0x991/0xe60 [ 718.064738] ? reset_hung_task_detector+0x30/0x30 [ 718.069559] kthread+0x33f/0x460 [ 718.072904] ? kthread_park+0x180/0x180 [ 718.076861] ret_from_fork+0x24/0x30 [ 718.080658] Sending NMI from CPU 1 to CPUs 0: [ 718.085463] NMI backtrace for cpu 0 [ 718.085469] CPU: 0 PID: 4693 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 718.085475] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.085479] RIP: 0010:do_filp_open+0x0/0x3f0 [ 718.085489] Code: 86 75 f1 ff e9 7c ff ff ff e8 0c 76 f1 ff eb ca e8 05 76 f1 ff eb a4 48 89 df e8 fb 75 f1 ff e9 3d ff ff ff 66 0f 1f 44 00 00 <41> 57 41 56 49 be 00 00 00 00 00 fc ff df 41 55 49 89 d5 41 54 41 [ 718.085493] RSP: 0018:ffff8880a0e7fe50 EFLAGS: 00000293 [ 718.085501] RAX: ffff8880a0e725c0 RBX: 0000000000000000 RCX: ffffffff81a205d2 [ 718.085506] RDX: ffff8880a0e7fe90 RSI: ffff888096780340 RDI: 00000000ffffff9c [ 718.085511] RBP: 0000000000000015 R08: 0000000000000000 R09: 0000000000000000 [ 718.085516] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888096780340 [ 718.085521] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000040 [ 718.085526] FS: 00007f19992ca8c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 718.085530] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.085535] CR2: 00007f199669c018 CR3: 00000000a0db2000 CR4: 00000000003406f0 [ 718.085540] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.085545] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.085548] Call Trace: [ 718.085551] do_sys_open+0x3b3/0x520 [ 718.085554] ? filp_open+0x70/0x70 [ 718.085558] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.085562] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.085566] ? do_syscall_64+0x21/0x620 [ 718.085569] do_syscall_64+0xf9/0x620 [ 718.085573] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.085576] RIP: 0033:0x7f1998859840 [ 718.085587] 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 [ 718.085591] RSP: 002b:00007fff5d4f1448 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 718.085599] RAX: ffffffffffffffda RBX: 00007fff5d4f1750 RCX: 00007f1998859840 [ 718.085604] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 000055c5fb438790 [ 718.085609] RBP: 000000000000000d R08: 00007f1998843bb8 R09: 00000000ffffffff [ 718.085614] R10: 0000000000000030 R11: 0000000000000246 R12: 00000000ffffffff [ 718.085619] R13: 000055c5fb434040 R14: 00007fff5d4f1710 R15: 000055c5fb441680 [ 718.086667] Kernel panic - not syncing: hung_task: blocked tasks [ 718.312616] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.320036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.329366] Call Trace: [ 718.331937] dump_stack+0x1fc/0x2ef [ 718.335547] panic+0x26a/0x50e [ 718.338717] ? __warn_printk+0xf3/0xf3 [ 718.342597] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.347071] ? ___preempt_schedule+0x16/0x18 [ 718.351460] ? watchdog+0x991/0xe60 [ 718.355063] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.360491] watchdog+0x9a2/0xe60 [ 718.363926] ? reset_hung_task_detector+0x30/0x30 [ 718.368749] kthread+0x33f/0x460 [ 718.372092] ? kthread_park+0x180/0x180 [ 718.376046] ret_from_fork+0x24/0x30 [ 718.380008] Kernel Offset: disabled [ 718.383631] Rebooting in 86400 seconds..