Warning: Permanently added '10.128.0.233' (ECDSA) to the list of known hosts. executing program [ 717.709173] INFO: task syz-executor251:8112 blocked for more than 140 seconds. [ 717.716823] Not tainted 4.19.211-syzkaller #0 [ 717.723509] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.731780] syz-executor251 D27376 8112 8110 0x00000004 [ 717.737618] Call Trace: [ 717.740598] __schedule+0x887/0x2040 [ 717.744326] ? io_schedule_timeout+0x140/0x140 [ 717.748898] ? _raw_spin_unlock+0x29/0x40 [ 717.753424] schedule+0x8d/0x1b0 [ 717.756802] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.762892] ? fuse_do_ioctl+0x1850/0x1850 [ 717.767136] ? wait_woken+0x250/0x250 [ 717.771282] ? fuse_writepage_locked+0xb63/0x1010 [ 717.776129] ? fuse_writepage_locked+0x1010/0x1010 [ 717.781397] fuse_launder_page+0xb6/0xe0 [ 717.785468] invalidate_inode_pages2_range+0x795/0x1110 [ 717.791190] ? clear_shadow_entry+0x170/0x170 [ 717.795703] ? fuse_file_alloc+0x1d9/0x270 [ 717.800405] ? do_raw_spin_unlock+0x171/0x230 [ 717.804899] ? _raw_spin_unlock+0x29/0x40 [ 717.809725] ? fuse_do_open+0x1c4/0x500 [ 717.813726] fuse_finish_open+0x2e2/0x590 [ 717.817870] fuse_open_common+0x254/0x2c0 [ 717.822532] do_dentry_open+0x4aa/0x1160 [ 717.826612] ? fuse_open_common+0x2c0/0x2c0 [ 717.831370] ? inode_permission.part.0+0x10c/0x450 [ 717.836309] ? chown_common+0x550/0x550 [ 717.840607] ? inode_permission+0x3d/0x140 [ 717.844847] path_openat+0x793/0x2df0 [ 717.848776] ? path_lookupat+0x8d0/0x8d0 [ 717.853180] ? mark_held_locks+0xf0/0xf0 [ 717.857366] do_filp_open+0x18c/0x3f0 [ 717.861548] ? may_open_dev+0xf0/0xf0 [ 717.865366] ? lock_downgrade+0x720/0x720 [ 717.869845] ? lock_acquire+0x170/0x3c0 [ 717.873828] ? __alloc_fd+0x34/0x570 [ 717.877555] ? do_raw_spin_unlock+0x171/0x230 [ 717.882400] ? _raw_spin_unlock+0x29/0x40 [ 717.886554] ? __alloc_fd+0x28d/0x570 [ 717.890683] do_sys_open+0x3b3/0x520 [ 717.894408] ? filp_open+0x70/0x70 [ 717.897935] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.903621] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.908730] ? do_syscall_64+0x21/0x620 [ 717.913065] do_syscall_64+0xf9/0x620 [ 717.916875] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.922377] RIP: 0033:0x7fa996ef04c9 [ 717.926110] Code: Bad RIP value. [ 717.929837] RSP: 002b:00007fa996ea12f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.937555] RAX: ffffffffffffffda RBX: 00007fa996f814c0 RCX: 00007fa996ef04c9 [ 717.945153] RDX: 00007fa996ef04c9 RSI: 0000000000000000 RDI: 00000000200001c0 [ 717.952674] RBP: 00007fa996f4e164 R08: 0000000000000000 R09: 0000000000000000 [ 717.960222] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.967493] R13: 00007fa996f4a158 R14: 00007fa996f4c160 R15: 00007fa996f814c8 [ 717.975140] [ 717.975140] Showing all locks held in the system: [ 717.981601] 1 lock held by khungtaskd/1570: [ 717.985923] #0: 0000000035c43735 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.994700] 2 locks held by syz-executor251/8112: [ 717.999595] #0: 000000002688605b (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 718.007572] #1: 00000000a847ca6e (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 718.017181] [ 718.018798] ============================================= [ 718.018798] [ 718.025923] NMI backtrace for cpu 0 [ 718.029777] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.037317] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.046661] Call Trace: [ 718.049245] dump_stack+0x1fc/0x2ef [ 718.052857] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.057334] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.061878] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.067172] watchdog+0x991/0xe60 [ 718.070620] ? reset_hung_task_detector+0x30/0x30 [ 718.075446] kthread+0x33f/0x460 [ 718.078793] ? kthread_park+0x180/0x180 [ 718.082748] ret_from_fork+0x24/0x30 [ 718.086550] Sending NMI from CPU 0 to CPUs 1: [ 718.091725] NMI backtrace for cpu 1 [ 718.091731] CPU: 1 PID: 4693 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 718.091738] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.091742] RIP: 0010:__list_del_entry_valid+0xaf/0xf0 [ 718.091752] Code: 75 51 49 8b 14 24 48 39 ea 0f 85 e8 51 85 04 49 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 22 <49> 8b 55 08 48 39 ea 0f 85 f9 51 85 04 5d b8 01 00 00 00 41 5c 41 [ 718.091756] RSP: 0018:ffff8880a0f0f908 EFLAGS: 00010046 [ 718.091764] RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000 [ 718.091769] RDX: 1ffffd40004ebdb2 RSI: 0000000000000068 RDI: ffffea000275ed90 [ 718.091774] RBP: ffffea0002c19708 R08: 0000000000000001 R09: ffffed1027fff788 [ 718.091779] R10: ffff88813fffbc43 R11: 0000000000000000 R12: ffff88813fffb828 [ 718.091784] R13: ffffea000275ed88 R14: ffff88813fffb6c0 R15: dffffc0000000000 [ 718.091789] FS: 00007f68064ed8c0(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 [ 718.091794] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.091799] CR2: 00007f68038be010 CR3: 00000000a0c6c000 CR4: 00000000003406e0 [ 718.091804] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.091809] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.091812] Call Trace: [ 718.091815] get_page_from_freelist+0x180f/0x4170 [ 718.091819] ? __save_stack_trace+0x72/0x190 [ 718.091823] ? deref_stack_reg+0x134/0x1d0 [ 718.091826] ? get_reg+0x176/0x1f0 [ 718.091829] ? should_fail+0x142/0x7b0 [ 718.091833] ? lock_downgrade+0x720/0x720 [ 718.091836] ? lock_acquire+0x170/0x3c0 [ 718.091840] ? __zone_watermark_ok+0x300/0x300 [ 718.091844] ? check_preemption_disabled+0x41/0x280 [ 718.091848] __alloc_pages_nodemask+0x387/0x2890 [ 718.091851] ? __kernel_text_address+0x9/0x30 [ 718.091855] ? unwind_get_return_address+0x51/0x90 [ 718.091859] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.091862] ? __save_stack_trace+0xaf/0x190 [ 718.091866] ? __lock_acquire+0x6de/0x3ff0 [ 718.091870] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 718.091874] ? kmem_cache_alloc+0x122/0x370 [ 718.091877] ? prepare_creds+0x39/0x510 [ 718.091880] ? do_faccessat+0x94/0x7a0 [ 718.091884] ? __lock_acquire+0x6de/0x3ff0 [ 718.091887] ? mark_held_locks+0xf0/0xf0 [ 718.091891] ? __sanitizer_cov_trace_switch+0x4b/0x80 [ 718.091895] cache_grow_begin+0xa4/0x8a0 [ 718.091898] ? lock_acquire+0x170/0x3c0 [ 718.091902] cache_alloc_refill+0x273/0x340 [ 718.091905] kmem_cache_alloc+0x346/0x370 [ 718.091909] getname_flags+0xce/0x590 [ 718.091912] user_path_at_empty+0x2a/0x50 [ 718.091916] do_faccessat+0x248/0x7a0 [ 718.091919] ? __ia32_sys_fallocate+0x140/0x140 [ 718.091923] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.091927] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.091931] ? do_syscall_64+0x21/0x620 [ 718.091934] do_syscall_64+0xf9/0x620 [ 718.091938] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.091941] RIP: 0033:0x7f68057a89c7 [ 718.091952] Code: 83 c4 08 48 3d 01 f0 ff ff 73 01 c3 48 8b 0d c8 d4 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 15 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d a1 d4 2b 00 f7 d8 64 89 01 48 [ 718.091956] RSP: 002b:00007fffdce30a08 EFLAGS: 00000246 ORIG_RAX: 0000000000000015 [ 718.091964] RAX: ffffffffffffffda RBX: 00007fffdce33a30 RCX: 00007f68057a89c7 [ 718.091969] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000561b090999a3 [ 718.091974] RBP: 00007fffdce30b50 R08: 0000561b0908f3e5 R09: 0000000000000018 [ 718.091979] R10: 0000000000000069 R11: 0000000000000246 R12: 0000000000000000 [ 718.091984] R13: 0000000000000000 R14: 0000561b09f7f8a0 R15: 00007fffdce31040 [ 718.092111] Kernel panic - not syncing: hung_task: blocked tasks [ 718.442676] CPU: 0 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.450107] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.459458] Call Trace: [ 718.462036] dump_stack+0x1fc/0x2ef [ 718.465646] panic+0x26a/0x50e [ 718.468822] ? __warn_printk+0xf3/0xf3 [ 718.472691] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 718.477816] ? cpumask_next+0x3c/0x40 [ 718.481774] ? printk_safe_flush+0xd6/0x120 [ 718.486088] ? watchdog+0x991/0xe60 [ 718.489712] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.495169] watchdog+0x9a2/0xe60 [ 718.498613] ? reset_hung_task_detector+0x30/0x30 [ 718.503454] kthread+0x33f/0x460 [ 718.506798] ? kthread_park+0x180/0x180 [ 718.510772] ret_from_fork+0x24/0x30 [ 718.514822] Kernel Offset: disabled [ 718.518454] Rebooting in 86400 seconds..