Warning: Permanently added '10.128.0.246' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 717.675139] INFO: task syz-executor386:8105 blocked for more than 140 seconds. [ 717.682592] Not tainted 4.19.211-syzkaller #0 [ 717.687832] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 717.695859] syz-executor386 D27400 8105 8103 0x00000004 [ 717.701478] Call Trace: [ 717.704050] __schedule+0x887/0x2040 [ 717.707817] ? io_schedule_timeout+0x140/0x140 [ 717.712404] ? _raw_spin_unlock+0x29/0x40 [ 717.716696] schedule+0x8d/0x1b0 [ 717.720085] fuse_wait_on_page_writeback.isra.0+0x11b/0x170 [ 717.725886] ? fuse_do_ioctl+0x1850/0x1850 [ 717.730127] ? wait_woken+0x250/0x250 [ 717.733944] ? fuse_writepage_locked+0xb63/0x1010 [ 717.738841] ? fuse_writepage_locked+0x1010/0x1010 [ 717.743770] fuse_launder_page+0xb6/0xe0 [ 717.747899] invalidate_inode_pages2_range+0x795/0x1110 [ 717.753264] ? clear_shadow_entry+0x170/0x170 [ 717.757810] ? fuse_file_alloc+0x1d9/0x270 [ 717.762049] ? do_raw_spin_unlock+0x171/0x230 [ 717.766612] ? _raw_spin_unlock+0x29/0x40 [ 717.770757] ? fuse_do_open+0x1c4/0x500 [ 717.774716] fuse_finish_open+0x2e2/0x590 [ 717.778919] fuse_open_common+0x254/0x2c0 [ 717.783073] do_dentry_open+0x4aa/0x1160 [ 717.787197] ? fuse_open_common+0x2c0/0x2c0 [ 717.791524] ? inode_permission.part.0+0x10c/0x450 [ 717.796499] ? chown_common+0x550/0x550 [ 717.800475] ? inode_permission+0x3d/0x140 [ 717.804697] path_openat+0x793/0x2df0 [ 717.808573] ? path_lookupat+0x8d0/0x8d0 [ 717.812633] ? mark_held_locks+0xf0/0xf0 [ 717.816749] do_filp_open+0x18c/0x3f0 [ 717.820547] ? may_open_dev+0xf0/0xf0 [ 717.824335] ? lock_downgrade+0x720/0x720 [ 717.828545] ? lock_acquire+0x170/0x3c0 [ 717.832514] ? __alloc_fd+0x34/0x570 [ 717.836279] ? do_raw_spin_unlock+0x171/0x230 [ 717.840774] ? _raw_spin_unlock+0x29/0x40 [ 717.844903] ? __alloc_fd+0x28d/0x570 [ 717.848784] do_sys_open+0x3b3/0x520 [ 717.852490] ? filp_open+0x70/0x70 [ 717.856085] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 717.861537] ? trace_hardirqs_off_caller+0x6e/0x210 [ 717.866615] ? do_syscall_64+0x21/0x620 [ 717.870581] do_syscall_64+0xf9/0x620 [ 717.874369] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 717.879597] RIP: 0033:0x7f80d2f0d509 [ 717.883309] Code: Bad RIP value. [ 717.886730] RSP: 002b:00007f80d2ebe2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 [ 717.894430] RAX: ffffffffffffffda RBX: 00007f80d2f9e4c0 RCX: 00007f80d2f0d509 [ 717.901745] RDX: 00007f80d2f0d509 RSI: 0000000000000000 RDI: 0000000020000400 [ 717.909090] RBP: 00007f80d2f6b164 R08: 0000000000000000 R09: 0000000000000000 [ 717.916404] R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e [ 717.923669] R13: 00007f80d2f67158 R14: 00007f80d2f69160 R15: 00007f80d2f9e4c8 [ 717.931025] [ 717.931025] Showing all locks held in the system: [ 717.937416] 1 lock held by khungtaskd/1570: [ 717.941717] #0: 00000000f6a4dfa2 (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 [ 717.950392] 2 locks held by syz-executor386/8105: [ 717.955280] #0: 00000000d0c65fea (sb_writers#11){.+.+}, at: mnt_want_write+0x3a/0xb0 [ 717.963251] #1: 000000000b1f1adb (&sb->s_type->i_mutex_key#17){+.+.}, at: fuse_open_common+0x1bc/0x2c0 [ 717.972851] [ 717.974472] ============================================= [ 717.974472] [ 717.981539] NMI backtrace for cpu 1 [ 717.985229] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 717.992665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.001998] Call Trace: [ 718.004572] dump_stack+0x1fc/0x2ef [ 718.008184] nmi_cpu_backtrace.cold+0x63/0xa2 [ 718.012661] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.017138] nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 [ 718.022399] watchdog+0x991/0xe60 [ 718.025836] ? reset_hung_task_detector+0x30/0x30 [ 718.030690] kthread+0x33f/0x460 [ 718.034039] ? kthread_park+0x180/0x180 [ 718.037995] ret_from_fork+0x24/0x30 [ 718.041815] Sending NMI from CPU 1 to CPUs 0: [ 718.046728] NMI backtrace for cpu 0 [ 718.046734] CPU: 0 PID: 4691 Comm: systemd-journal Not tainted 4.19.211-syzkaller #0 [ 718.046740] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.046744] RIP: 0010:___bpf_prog_run+0x1262/0x4e80 [ 718.046755] Code: f8 83 e0 07 83 c0 03 38 c8 7c 08 84 c9 0f 85 0e 2c 00 00 4d 63 7e 04 48 89 d7 48 89 14 24 4c 89 fe e8 82 3d f6 ff 48 8b 14 24 <4c> 39 fa 0f 82 0d 24 00 00 e8 60 3c f6 ff 49 8d 7e 02 48 89 f8 48 [ 718.046759] RSP: 0018:ffff8880a0e3fa30 EFLAGS: 00000293 [ 718.046766] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffffff816c48fe [ 718.046771] RDX: 0000000000000027 RSI: ffff8880a0e34540 RDI: 0000000000000006 [ 718.046776] RBP: ffff8880a0e3fb00 R08: 0000000000000000 R09: 0000000000000027 [ 718.046781] R10: 0000000000000006 R11: 0000000000000000 R12: ffffffff886fb460 [ 718.046786] R13: ffffed10141c7f62 R14: ffffc90001a95070 R15: 0000000040000000 [ 718.046791] FS: 00007feb820748c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 718.046796] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 718.046800] CR2: 00007feb7f445000 CR3: 00000000a11d5000 CR4: 00000000003406f0 [ 718.046805] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 718.046810] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 718.046813] Call Trace: [ 718.046817] ? __bpf_prog_run32+0x8f/0xd0 [ 718.046820] ? __bpf_prog_run64+0xd0/0xd0 [ 718.046824] ? __mutex_unlock_slowpath+0xea/0x610 [ 718.046828] ? wait_for_completion_io+0x10/0x10 [ 718.046831] ? seccomp_run_filters+0x124/0x590 [ 718.046835] ? __put_seccomp_filter+0xa0/0xa0 [ 718.046839] ? __add_preferred_console.constprop.0+0x1a0/0x1a0 [ 718.046843] ? __seccomp_filter+0x93/0xca0 [ 718.046847] ? seccomp_send_sigsys+0x1c0/0x1c0 [ 718.046851] ? __se_sys_copy_file_range+0x410/0x410 [ 718.046854] ? fsnotify_first_mark+0x200/0x200 [ 718.046857] ? fsnotify+0x84e/0xe10 [ 718.046861] ? mark_held_locks+0xf0/0xf0 [ 718.046865] ? fsnotify_first_mark+0x200/0x200 [ 718.046868] ? security_file_permission+0x1c0/0x220 [ 718.046872] ? __secure_computing+0xfc/0x360 [ 718.046876] ? syscall_trace_enter+0x563/0xd60 [ 718.046880] ? syscall_slow_exit_work+0x630/0x630 [ 718.046884] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 718.046888] ? trace_hardirqs_off_caller+0x6e/0x210 [ 718.046891] ? do_syscall_64+0x21/0x620 [ 718.046894] ? do_syscall_64+0x486/0x620 [ 718.046899] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 718.047641] Kernel panic - not syncing: hung_task: blocked tasks [ 718.283311] CPU: 1 PID: 1570 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 [ 718.290743] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 718.300075] Call Trace: [ 718.302654] dump_stack+0x1fc/0x2ef [ 718.306268] panic+0x26a/0x50e [ 718.309442] ? __warn_printk+0xf3/0xf3 [ 718.313312] ? lapic_can_unplug_cpu+0x80/0x80 [ 718.317784] ? ___preempt_schedule+0x16/0x18 [ 718.322173] ? watchdog+0x991/0xe60 [ 718.325780] ? nmi_trigger_cpumask_backtrace+0x15e/0x1f0 [ 718.331212] watchdog+0x9a2/0xe60 [ 718.334653] ? reset_hung_task_detector+0x30/0x30 [ 718.339478] kthread+0x33f/0x460 [ 718.342824] ? kthread_park+0x180/0x180 [ 718.346798] ret_from_fork+0x24/0x30 [ 718.350759] Kernel Offset: disabled [ 718.354376] Rebooting in 86400 seconds..