[ 84.679386][ T26] audit: type=1400 audit(1574825542.838:38): avc: denied { watch } for pid=9259 comm="restorecond" path="/etc/selinux/restorecond.conf" dev="sda1" ino=2232 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 85.236875][ T26] audit: type=1800 audit(1574825543.418:39): pid=9172 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 85.264505][ T26] audit: type=1800 audit(1574825543.418:40): pid=9172 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 [ 85.942193][ T26] audit: type=1400 audit(1574825544.118:41): avc: denied { map } for pid=9348 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.82' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 385.029414][ T26] audit: type=1400 audit(1574825843.208:42): avc: denied { map } for pid=9360 comm="syz-executor317" path="/root/syz-executor317466036" dev="sda1" ino=1426 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 537.763591][ T1071] INFO: task syz-executor317:9360 blocked for more than 143 seconds. [ 537.772047][ T1071] Not tainted 5.4.0-syzkaller #0 [ 537.777622][ T1071] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 537.786343][ T1071] syz-executor317 D27416 9360 9358 0x00000000 [ 537.792771][ T1071] Call Trace: [ 537.796240][ T1071] __schedule+0x909/0x1ee0 [ 537.800690][ T1071] ? __sched_text_start+0x8/0x8 [ 537.805626][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 537.810980][ T1071] ? __lock_sock+0x160/0x290 [ 537.815623][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 537.820651][ T1071] schedule+0xdc/0x2b0 [ 537.824778][ T1071] __lock_sock+0x165/0x290 [ 537.829195][ T1071] ? __sk_dst_check+0x2e0/0x2e0 [ 537.834091][ T1071] ? finish_wait+0x260/0x260 [ 537.838695][ T1071] lock_sock_nested+0xfe/0x120 [ 537.843636][ T1071] virtio_transport_release+0xc4/0xcb0 [ 537.849318][ T1071] ? virtio_transport_close_timeout+0x130/0x130 [ 537.855642][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 537.861113][ T1071] ? lock_sock_nested+0xe2/0x120 [ 537.866140][ T1071] ? __local_bh_enable_ip+0x15a/0x270 [ 537.871510][ T1071] ? lockdep_hardirqs_on+0x421/0x5e0 [ 537.877490][ T1071] ? lock_sock_nested+0x9a/0x120 [ 537.882419][ T1071] ? trace_hardirqs_on+0x67/0x240 [ 537.887509][ T1071] ? lock_sock_nested+0x9a/0x120 [ 537.892449][ T1071] vsock_assign_transport+0xea/0x330 [ 537.897775][ T1071] vsock_stream_connect+0x2b3/0xbe0 [ 537.902979][ T1071] ? tomoyo_socket_listen_permission+0x3b0/0x3b0 [ 537.909363][ T1071] ? vsock_dgram_connect+0x470/0x470 [ 537.914703][ T1071] ? _raw_spin_unlock_bh+0x31/0x40 [ 537.919822][ T1071] ? finish_wait+0x260/0x260 [ 537.924478][ T1071] ? tomoyo_socket_connect+0x26/0x30 [ 537.929761][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 537.936053][ T1071] __sys_connect+0x264/0x330 [ 537.940638][ T1071] ? __ia32_sys_accept+0xb0/0xb0 [ 537.945634][ T1071] ? up_read+0x1d2/0x810 [ 537.949897][ T1071] ? down_read_non_owner+0x490/0x490 [ 537.955239][ T1071] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 537.961502][ T1071] ? handle_mm_fault+0x4b0/0xaa0 [ 537.966558][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 537.972212][ T1071] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 537.977791][ T1071] ? do_syscall_64+0x26/0x760 [ 537.982472][ T1071] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 537.988615][ T1071] ? do_syscall_64+0x26/0x760 [ 537.993330][ T1071] __x64_sys_connect+0x73/0xb0 [ 537.998080][ T1071] do_syscall_64+0xfa/0x760 [ 538.002576][ T1071] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 538.009188][ T1071] RIP: 0033:0x4401b9 [ 538.013090][ T1071] Code: Bad RIP value. [ 538.017200][ T1071] RSP: 002b:00007fff3edc70e8 EFLAGS: 00000246 ORIG_RAX: 000000000000002a [ 538.025666][ T1071] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401b9 [ 538.033672][ T1071] RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003 [ 538.041644][ T1071] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 538.049676][ T1071] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401a40 [ 538.057671][ T1071] R13: 0000000000401ad0 R14: 0000000000000000 R15: 0000000000000000 [ 538.065717][ T1071] [ 538.065717][ T1071] Showing all locks held in the system: [ 538.073466][ T1071] 1 lock held by khungtaskd/1071: [ 538.078463][ T1071] #0: ffffffff88fac3c0 (rcu_read_lock){....}, at: debug_show_all_locks+0x5f/0x27e [ 538.087850][ T1071] 1 lock held by rsyslogd/9211: [ 538.092695][ T1071] #0: ffff88807d0e1de0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.101340][ T1071] 3 locks held by getty/9332: [ 538.106050][ T1071] #0: ffff8880897ae420 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.114686][ T1071] #1: ffff88809c0e5090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.123670][ T1071] #2: ffffc900060c92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.133277][ T1071] 3 locks held by getty/9333: [ 538.138633][ T1071] #0: ffff8880983b2da0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.147308][ T1071] #1: ffff88809443f090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.156289][ T1071] #2: ffffc900060b92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.165923][ T1071] 3 locks held by getty/9334: [ 538.170585][ T1071] #0: ffff8880a61c1360 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.179261][ T1071] #1: ffff8880907c6090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.188341][ T1071] #2: ffffc900060d92e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.198114][ T1071] 3 locks held by getty/9335: [ 538.202860][ T1071] #0: ffff8880a001b360 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.211520][ T1071] #1: ffff8880973a8090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.220497][ T1071] #2: ffffc900060bd2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.230105][ T1071] 3 locks held by getty/9336: [ 538.234788][ T1071] #0: ffff8880955c9360 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.243431][ T1071] #1: ffff8880949ca090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.252375][ T1071] #2: ffffc900060dd2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.261983][ T1071] 3 locks held by getty/9337: [ 538.267185][ T1071] #0: ffff888096d8d6a0 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.275815][ T1071] #1: ffff8880a8f30090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.284798][ T1071] #2: ffffc900060d52e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.294374][ T1071] 3 locks held by getty/9338: [ 538.299047][ T1071] #0: ffff8880a3f77120 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0xee/0x110 [ 538.307683][ T1071] #1: ffff88809c2a0090 (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x33/0x40 [ 538.316643][ T1071] #2: ffffc900060ad2e0 (&ldata->atomic_read_lock){+.+.}, at: n_tty_read+0x232/0x1c10 [ 538.326252][ T1071] 1 lock held by syz-executor317/9360: [ 538.331694][ T1071] #0: ffff88809ccf18d0 (sk_lock-AF_VSOCK){+.+.}, at: vsock_stream_connect+0xfb/0xbe0 [ 538.341302][ T1071] [ 538.343657][ T1071] ============================================= [ 538.343657][ T1071] [ 538.352041][ T1071] NMI backtrace for cpu 0 [ 538.356410][ T1071] CPU: 0 PID: 1071 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 538.364286][ T1071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 538.374332][ T1071] Call Trace: [ 538.377614][ T1071] dump_stack+0x197/0x210 [ 538.381927][ T1071] nmi_cpu_backtrace.cold+0x70/0xb2 [ 538.387102][ T1071] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 538.393321][ T1071] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 538.398936][ T1071] nmi_trigger_cpumask_backtrace+0x23b/0x28b [ 538.404895][ T1071] arch_trigger_cpumask_backtrace+0x14/0x20 [ 538.410770][ T1071] watchdog+0x9d0/0xef0 [ 538.414911][ T1071] kthread+0x361/0x430 [ 538.419009][ T1071] ? reset_hung_task_detector+0x30/0x30 [ 538.424542][ T1071] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 538.430245][ T1071] ret_from_fork+0x24/0x30 [ 538.434870][ T1071] Sending NMI from CPU 0 to CPUs 1: [ 538.440136][ C1] NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 [ 538.441860][ T1071] Kernel panic - not syncing: hung_task: blocked tasks [ 538.455406][ T1071] CPU: 0 PID: 1071 Comm: khungtaskd Not tainted 5.4.0-syzkaller #0 [ 538.463279][ T1071] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 538.473330][ T1071] Call Trace: [ 538.476603][ T1071] dump_stack+0x197/0x210 [ 538.480927][ T1071] panic+0x2e3/0x75c [ 538.484943][ T1071] ? add_taint.cold+0x16/0x16 [ 538.489616][ T1071] ? lapic_can_unplug_cpu.cold+0x3a/0x3a [ 538.495246][ T1071] ? ___preempt_schedule+0x16/0x20 [ 538.500348][ T1071] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 538.506493][ T1071] ? nmi_trigger_cpumask_backtrace+0x24c/0x28b [ 538.512642][ T1071] ? nmi_trigger_cpumask_backtrace+0x256/0x28b [ 538.518778][ T1071] ? nmi_trigger_cpumask_backtrace+0x21b/0x28b [ 538.525026][ T1071] watchdog+0x9e1/0xef0 [ 538.529183][ T1071] kthread+0x361/0x430 [ 538.533238][ T1071] ? reset_hung_task_detector+0x30/0x30 [ 538.538774][ T1071] ? kthread_mod_delayed_work+0x1f0/0x1f0 [ 538.544481][ T1071] ret_from_fork+0x24/0x30 [ 538.550785][ T1071] Kernel Offset: disabled [ 538.555131][ T1071] Rebooting in 86400 seconds..