[ 53.203137][ T26] audit: type=1800 audit(1565755205.361:21): pid=9224 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 53.254568][ T26] audit: type=1800 audit(1565755205.361:22): pid=9224 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[ 53.549725][ T9250] rsyslogd (9250) used greatest stack depth: 24168 bytes left [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 726.309990][ T1057] INFO: task syz-executor300:9376 blocked for more than 143 seconds. [ 726.318215][ T1057] Not tainted 5.3.0-rc4+ #74 [ 726.323383][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 726.332109][ T1057] syz-executor300 D28408 9376 9374 0x00004000 [ 726.338464][ T1057] Call Trace: [ 726.341864][ T1057] __schedule+0x877/0xc50 [ 726.346194][ T1057] schedule+0x131/0x1e0 [ 726.350372][ T1057] schedule_preempt_disabled+0x13/0x20 [ 726.355808][ T1057] __mutex_lock_common+0x1401/0x2820 [ 726.361902][ T1057] ? fuse_lock_inode+0xab/0xf0 [ 726.366696][ T1057] mutex_lock_nested+0x1b/0x30 [ 726.371505][ T1057] fuse_lock_inode+0xab/0xf0 [ 726.376072][ T1057] fuse_lookup+0x3e/0x360 [ 726.380479][ T1057] ? lockdep_init_map+0x2a/0x680 [ 726.385785][ T1057] __lookup_slow+0x285/0x380 [ 726.390420][ T1057] walk_component+0x2d6/0x7b0 [ 726.395078][ T1057] ? inode_permission+0xe3/0x580 [ 726.400034][ T1057] link_path_walk+0x75b/0x1410 [ 726.404782][ T1057] path_openat+0x139/0x4460 [ 726.409317][ T1057] ? __kasan_kmalloc+0x178/0x1b0 [ 726.414281][ T1057] ? __kasan_kmalloc+0x11c/0x1b0 [ 726.419201][ T1057] ? kasan_slab_alloc+0xf/0x20 [ 726.424009][ T1057] ? getname+0x19/0x20 [ 726.428313][ T1057] ? do_syscall_64+0xfe/0x140 [ 726.433047][ T1057] ? trace_mm_page_alloc+0x17a/0x1f0 [ 726.438486][ T1057] ? cache_grow_end+0x143/0x170 [ 726.443390][ T1057] ? cache_grow_end+0x143/0x170 [ 726.448221][ T1057] ? trace_lock_release+0x135/0x1a0 [ 726.453489][ T1057] ? __alloc_fd+0x58f/0x630 [ 726.457977][ T1057] do_filp_open+0x192/0x3d0 [ 726.462559][ T1057] do_sys_open+0x29f/0x560 [ 726.466956][ T1057] __x64_sys_open+0x87/0x90 [ 726.471484][ T1057] do_syscall_64+0xfe/0x140 [ 726.476120][ T1057] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 726.482072][ T1057] RIP: 0033:0x444ca0 [ 726.485960][ T1057] Code: Bad RIP value. [ 726.490050][ T1057] RSP: 002b:00007ffe2a7c9170 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 [ 726.498501][ T1057] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000444ca0 [ 726.506544][ T1057] RDX: 0000000000000000 RSI: 0000000000090800 RDI: 00000000004ae91e [ 726.514553][ T1057] RBP: 00000000000024a5 R08: 00000000000024a0 R09: 00005555558af880 [ 726.522570][ T1057] R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffe2a7c93a0 [ 726.530552][ T1057] R13: 00000000004075d0 R14: 0000000000000000 R15: 0000000000000000 [ 726.538616][ T1057] INFO: task syz-executor300:9381 blocked for more than 143 seconds. [ 726.546863][ T1057] Not tainted 5.3.0-rc4+ #74 [ 726.551969][ T1057] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 726.560700][ T1057] syz-executor300 D28920 9381 9376 0x00004004 [ 726.567029][ T1057] Call Trace: [ 726.570378][ T1057] __schedule+0x877/0xc50 [ 726.574690][ T1057] schedule+0x131/0x1e0 [ 726.578818][ T1057] schedule_preempt_disabled+0x13/0x20 [ 726.584320][ T1057] __mutex_lock_common+0x1401/0x2820 [ 726.589595][ T1057] ? fuse_lock_inode+0xab/0xf0 [ 726.594421][ T1057] mutex_lock_nested+0x1b/0x30 [ 726.599237][ T1057] fuse_lock_inode+0xab/0xf0 [ 726.603892][ T1057] fuse_lookup+0x3e/0x360 [ 726.608204][ T1057] ? lockdep_init_map+0x2a/0x680 [ 726.613169][ T1057] __lookup_slow+0x285/0x380 [ 726.617740][ T1057] walk_component+0x2d6/0x7b0 [ 726.622451][ T1057] ? inode_permission+0xe3/0x580 [ 726.627369][ T1057] link_path_walk+0x75b/0x1410 [ 726.632158][ T1057] path_openat+0x139/0x4460 [ 726.636635][ T1057] ? __kasan_kmalloc+0x178/0x1b0 [ 726.641595][ T1057] ? __kasan_kmalloc+0x11c/0x1b0 [ 726.646505][ T1057] ? kasan_slab_alloc+0xf/0x20 [ 726.651398][ T1057] ? getname+0x19/0x20 [ 726.655556][ T1057] ? do_syscall_64+0xfe/0x140 [ 726.660330][ T1057] ? trace_mm_page_alloc+0x17a/0x1f0 [ 726.665728][ T1057] ? cache_grow_end+0x143/0x170 [ 726.670612][ T1057] ? cache_grow_end+0x143/0x170 [ 726.675442][ T1057] ? trace_lock_release+0x135/0x1a0 [ 726.680722][ T1057] ? __alloc_fd+0x58f/0x630 [ 726.685210][ T1057] do_filp_open+0x192/0x3d0 [ 726.689706][ T1057] do_sys_open+0x29f/0x560 [ 726.694162][ T1057] __x64_sys_open+0x87/0x90 [ 726.698649][ T1057] do_syscall_64+0xfe/0x140 [ 726.703265][ T1057] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 726.709138][ T1057] RIP: 0033:0x405810 [ 726.713088][ T1057] Code: 74 18 48 39 58 08 75 f2 48 39 68 10 75 ec 5b 5d 41 5c c3 0f 1f 80 00 00 00 00 bf 18 00 00 00 e8 76 d3 ff ff 48 85 c0 74 e5 4d <85> e4 48 c7 00 00 00 00 00 48 89 58 08 48 89 68 10 74 16 48 8b 15 [ 726.732717][ T1057] RSP: 002b:00007ffe2a7c8e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 726.741252][ T1057] RAX: ffffffffffffffda RBX: 00007ffe2a7c8ea4 RCX: 0000000000405810 [ 726.749199][ T1057] RDX: 00007ffe2a7c8eaa RSI: 0000000000080001 RDI: 00000000004ae93c [ 726.757191][ T1057] RBP: 00007ffe2a7c8ea0 R08: 0000000000000000 R09: 0000000000000004 [ 726.765158][ T1057] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000407540 [ 726.773145][ T1057] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 726.781119][ T1057] INFO: lockdep is turned off. [ 726.785853][ T1057] NMI backtrace for cpu 1 [ 726.790191][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc4+ #74 [ 726.797701][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 726.807732][ T1057] Call Trace: [ 726.811062][ T1057] dump_stack+0x1d8/0x2f8 [ 726.815365][ T1057] nmi_cpu_backtrace+0xaf/0x1a0 [ 726.820269][ T1057] ? nmi_trigger_cpumask_backtrace+0x16d/0x290 [ 726.826449][ T1057] ? arch_trigger_cpumask_backtrace+0x20/0x20 [ 726.832600][ T1057] nmi_trigger_cpumask_backtrace+0x174/0x290 [ 726.838557][ T1057] arch_trigger_cpumask_backtrace+0x10/0x20 [ 726.844461][ T1057] trigger_all_cpu_backtrace+0x17/0x20 [ 726.849910][ T1057] watchdog+0xbb9/0xbd0 [ 726.854066][ T1057] kthread+0x332/0x350 [ 726.858107][ T1057] ? hungtask_pm_notify+0x50/0x50 [ 726.863097][ T1057] ? kthread_blkcg+0xe0/0xe0 [ 726.867798][ T1057] ret_from_fork+0x24/0x30 [ 726.872285][ T1057] Sending NMI from CPU 1 to CPUs 0: [ 726.877513][ C0] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 [ 726.878505][ T1057] Kernel panic - not syncing: hung_task: blocked tasks [ 726.892576][ T1057] CPU: 1 PID: 1057 Comm: khungtaskd Not tainted 5.3.0-rc4+ #74 [ 726.900136][ T1057] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 726.910301][ T1057] Call Trace: [ 726.913574][ T1057] dump_stack+0x1d8/0x2f8 [ 726.917920][ T1057] panic+0x25c/0x799 [ 726.921793][ T1057] ? nmi_trigger_cpumask_backtrace+0x21a/0x290 [ 726.927915][ T1057] watchdog+0xbcc/0xbd0 [ 726.932072][ T1057] kthread+0x332/0x350 [ 726.936107][ T1057] ? hungtask_pm_notify+0x50/0x50 [ 726.941098][ T1057] ? kthread_blkcg+0xe0/0xe0 [ 726.945657][ T1057] ret_from_fork+0x24/0x30 [ 726.951095][ T1057] Kernel Offset: disabled [ 726.955418][ T1057] Rebooting in 86400 seconds..