[....] Starting enhanced syslogd: rsyslogd[ 12.372985] audit: type=1400 audit(1516033300.996:5): avc: denied { syslog } for pid=3494 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.573180] audit: type=1400 audit(1516033307.196:6): avc: denied { map } for pid=3632 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 Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts. [ 39.760203] audit: type=1400 audit(1516033328.384:7): avc: denied { map } for pid=3649 comm="syzkaller340557" path="/root/syzkaller340557299" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 executing program [ 39.949412] device eql entered promiscuous mode [ 39.955190] ------------[ cut here ]------------ [ 39.959968] PF_CAN: dropped non conform CAN skbuf: dev type 65534, len 42, datalen 0 [ 39.967963] WARNING: CPU: 0 PID: 3650 at net/can/af_can.c:729 can_rcv+0x1c5/0x200 [ 39.975557] Kernel panic - not syncing: panic_on_warn set ... [ 39.975557] [ 39.982894] CPU: 0 PID: 3650 Comm: syzkaller340557 Not tainted 4.15.0-rc8+ #263 [ 39.990313] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.999653] Call Trace: [ 40.002222] dump_stack+0x194/0x257 [ 40.005826] ? arch_local_irq_restore+0x53/0x53 [ 40.010472] ? vsnprintf+0x1ed/0x1900 [ 40.014252] panic+0x1e4/0x41c [ 40.017418] ? refcount_error_report+0x214/0x214 [ 40.022147] ? show_regs_print_info+0x18/0x18 [ 40.026619] ? __warn+0x1c1/0x200 [ 40.030049] ? can_rcv+0x1c5/0x200 [ 40.033559] __warn+0x1dc/0x200 [ 40.036810] ? console_unlock+0x983/0xd80 [ 40.040930] ? can_rcv+0x1c5/0x200 [ 40.044444] report_bug+0x211/0x2d0 [ 40.048048] fixup_bug.part.11+0x37/0x80 [ 40.052082] do_error_trap+0x2d7/0x3e0 [ 40.055939] ? __down_trylock_console_sem+0x10d/0x1e0 [ 40.061102] ? math_error+0x400/0x400 [ 40.064874] ? vprintk_emit+0x3ea/0x590 [ 40.068841] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.073660] do_invalid_op+0x1b/0x20 [ 40.077344] invalid_op+0x22/0x40 [ 40.080768] RIP: 0010:can_rcv+0x1c5/0x200 [ 40.084887] RSP: 0018:ffff8801bbe57068 EFLAGS: 00010286 [ 40.090220] RAX: dffffc0000000008 RBX: ffff8801d947ae40 RCX: ffffffff8159dade [ 40.097549] RDX: 0000000000000000 RSI: 1ffff100377cadc8 RDI: ffff8801bbe56d70 [ 40.104791] RBP: ffff8801bbe57090 R08: 0000000000000000 R09: 0000000000000000 [ 40.112032] R10: ffff8801bbe575b0 R11: 0000000000000000 R12: ffff8801d99f8380 [ 40.119273] R13: ffff8801d9a3d040 R14: 000000000000fffe R15: ffffffff8704d800 [ 40.126524] ? vprintk_func+0x5e/0xc0 [ 40.130304] ? can_rcv+0x1c5/0x200 [ 40.133815] ? can_receive+0x4d0/0x4d0 [ 40.137676] __netif_receive_skb_core+0x1a41/0x3460 [ 40.142672] ? nf_ingress+0x9f0/0x9f0 [ 40.146458] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.151622] ? __bfs+0x6a0/0x750 [ 40.154966] ? check_noncircular+0x20/0x20 [ 40.159192] ? __skb_flow_get_ports+0x420/0x420 [ 40.163834] ? __lock_is_held+0xb6/0x140 [ 40.167865] ? lock_downgrade+0x980/0x980 [ 40.171992] ? find_held_lock+0x35/0x1d0 [ 40.176029] ? find_held_lock+0x35/0x1d0 [ 40.180068] ? netif_receive_skb_internal+0x1d7/0x670 [ 40.185231] ? lock_downgrade+0x980/0x980 [ 40.189362] ? pvclock_read_flags+0x160/0x160 [ 40.193838] ? lock_acquire+0x1d5/0x580 [ 40.197784] ? lock_acquire+0x1d5/0x580 [ 40.201728] ? netif_receive_skb_internal+0xa2/0x670 [ 40.206814] ? ktime_get_with_offset+0x2c1/0x420 [ 40.211545] ? lock_release+0xa40/0xa40 [ 40.215501] ? do_gettimeofday+0x190/0x190 [ 40.219713] ? debug_object_fixup+0x30/0x30 [ 40.224005] ? find_held_lock+0x35/0x1d0 [ 40.228048] __netif_receive_skb+0x2c/0x1b0 [ 40.232343] ? __netif_receive_skb+0x2c/0x1b0 [ 40.236813] netif_receive_skb_internal+0x10b/0x670 [ 40.241811] ? dev_cpu_dead+0xb00/0xb00 [ 40.245775] ? __do_once_done+0xf2/0x300 [ 40.249818] ? rcu_pm_notify+0xc0/0xc0 [ 40.253686] netif_receive_skb+0xae/0x390 [ 40.257807] ? netif_receive_skb_internal+0x670/0x670 [ 40.262975] ? __skb_get_hash_symmetric+0xd1/0xa70 [ 40.267889] ? tun_rx_batched.isra.50+0x5c4/0x870 [ 40.272796] tun_rx_batched.isra.50+0x5ee/0x870 [ 40.277451] ? tun_sock_write_space+0x370/0x370 [ 40.282109] tun_get_user+0x24ac/0x3710 [ 40.286073] ? clear_asid_other+0x50/0x50 [ 40.290208] ? tun_build_skb.isra.48+0x17d0/0x17d0 [ 40.295108] ? trace_hardirqs_on+0xd/0x10 [ 40.299229] ? _raw_spin_unlock_irq+0x27/0x70 [ 40.303696] ? finish_task_switch+0x1d3/0x740 [ 40.308246] ? finish_task_switch+0x1aa/0x740 [ 40.312722] ? copy_overflow+0x20/0x20 [ 40.316595] ? tun_get+0x1ab/0x2e0 [ 40.320106] ? __sched_text_start+0x8/0x8 [ 40.324227] ? lock_release+0xa40/0xa40 [ 40.328176] ? __lock_is_held+0xb6/0x140 [ 40.332219] ? tun_get+0x1d4/0x2e0 [ 40.335728] ? tun_chr_close+0x60/0x60 [ 40.339594] tun_chr_write_iter+0xb9/0x160 [ 40.343804] __vfs_write+0x684/0x970 [ 40.347491] ? kernel_read+0x120/0x120 [ 40.351356] ? _cond_resched+0x14/0x30 [ 40.355220] ? avc_policy_seqno+0x9/0x20 [ 40.359261] ? selinux_file_permission+0x82/0x460 [ 40.364083] ? rw_verify_area+0xe5/0x2b0 [ 40.368114] ? __fdget_raw+0x20/0x20 [ 40.371801] vfs_write+0x189/0x510 [ 40.375315] SyS_write+0xef/0x220 [ 40.378743] ? SyS_read+0x220/0x220 [ 40.382340] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.387328] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.392061] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 40.396789] RIP: 0033:0x4445d9 [ 40.399950] RSP: 002b:00007fffbeafb128 EFLAGS: 00000217 ORIG_RAX: 0000000000000001 [ 40.407626] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004445d9 [ 40.414868] RDX: 000000000000002e RSI: 0000000020b61fd2 RDI: 0000000000000004 [ 40.422109] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 40.429362] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000006c7165 [ 40.436608] R13: 0000000000401fb0 R14: 0000000000000000 R15: 0000000000000000 [ 40.444348] Dumping ftrace buffer: [ 40.447917] (ftrace buffer empty) [ 40.451602] Kernel Offset: disabled [ 40.455206] Rebooting in 86400 seconds..