[....] Starting enhanced syslogd: rsyslogd[ 13.416063] audit: type=1400 audit(1516003240.994:5): avc: denied { syslog } for pid=3514 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: [ 19.132232] audit: type=1400 audit(1516003246.711:6): avc: denied { map } for pid=3654 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 '10.128.15.210' (ECDSA) to the list of known hosts. [ 26.744546] audit: type=1400 audit(1516003254.323:7): avc: denied { map } for pid=3668 comm="syzkaller365128" path="/root/syzkaller365128354" 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 [ 26.770946] audit: type=1400 audit(1516003254.323:8): avc: denied { sys_admin } for pid=3668 comm="syzkaller365128" capability=21 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 26.798596] audit: type=1400 audit(1516003254.377:9): avc: denied { sys_chroot } for pid=3669 comm="syzkaller365128" capability=18 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=cap_userns permissive=1 [ 26.805513] device syz0 entered promiscuous mode [ 26.806291] ------------[ cut here ]------------ [ 26.806296] PF_CAN: dropped non conform CAN FD skbuf: dev type 65534, len 128, datalen 0 [ 26.806419] WARNING: CPU: 1 PID: 3669 at net/can/af_can.c:750 canfd_rcv+0x1c5/0x200 [ 26.806422] Kernel panic - not syncing: panic_on_warn set ... [ 26.806422] [ 26.806428] CPU: 1 PID: 3669 Comm: syzkaller365128 Not tainted 4.15.0-rc7-next-20180115+ #97 [ 26.806430] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.806432] Call Trace: [ 26.806440] dump_stack+0x194/0x257 [ 26.806449] ? arch_local_irq_restore+0x53/0x53 [ 26.806459] ? vsnprintf+0x1ed/0x1900 [ 26.806470] panic+0x1e4/0x41c [ 26.806475] ? refcount_error_report+0x214/0x214 [ 26.806479] ? show_regs_print_info+0x18/0x18 [ 26.806491] ? __warn+0x1c1/0x200 [ 26.806498] ? canfd_rcv+0x1c5/0x200 [ 26.806502] __warn+0x1dc/0x200 [ 26.806507] ? canfd_rcv+0x1c5/0x200 [ 26.806515] report_bug+0x211/0x2d0 [ 26.806525] fixup_bug.part.11+0x37/0x80 [ 26.806530] do_error_trap+0x2d7/0x3e0 [ 26.806536] ? __down_trylock_console_sem+0x10d/0x1e0 [ 26.806544] ? math_error+0x400/0x400 [ 26.806549] ? vprintk_emit+0x3ea/0x590 [ 26.806565] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.806575] do_invalid_op+0x1b/0x20 [ 26.806581] invalid_op+0x22/0x40 [ 26.806585] RIP: 0010:canfd_rcv+0x1c5/0x200 [ 26.806588] RSP: 0018:ffff8801bc27f028 EFLAGS: 00010286 [ 26.806592] RAX: dffffc0000000008 RBX: ffff8801d9b4cd40 RCX: ffffffff815aba6e [ 26.806595] RDX: 0000000000000000 RSI: ffff8801bc264f78 RDI: 0000000000000293 [ 26.806598] RBP: ffff8801bc27f050 R08: 0000000000000000 R09: 0000000000000000 [ 26.806600] R10: ffff8801bc27f570 R11: 0000000000000000 R12: ffff8801bc298380 [ 26.806603] R13: ffff8801d9be6340 R14: 000000000000fffe R15: ffffffff87056040 [ 26.806614] ? vprintk_func+0x5e/0xc0 [ 26.806623] ? canfd_rcv+0x1c5/0x200 [ 26.806627] ? can_rcv+0x200/0x200 [ 26.806636] __netif_receive_skb_core+0x1a41/0x3460 [ 26.806650] ? nf_ingress+0x9f0/0x9f0 [ 26.806655] ? check_noncircular+0x20/0x20 [ 26.806662] ? __skb_flow_dissect+0x49a/0x3f90 [ 26.806675] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 26.806686] ? __skb_flow_get_ports+0x420/0x420 [ 26.806695] ? check_noncircular+0x20/0x20 [ 26.806702] ? __lock_is_held+0xb6/0x140 [ 26.806708] ? lock_downgrade+0x980/0x980 [ 26.806727] ? find_held_lock+0x35/0x1d0 [ 26.806740] ? find_held_lock+0x35/0x1d0 [ 26.806753] ? netif_receive_skb_internal+0x1d7/0x670 [ 26.806759] ? lock_downgrade+0x980/0x980 [ 26.806775] ? pvclock_read_flags+0x160/0x160 [ 26.806786] ? lock_acquire+0x1d5/0x580 [ 26.806790] ? lock_acquire+0x1d5/0x580 [ 26.806795] ? netif_receive_skb_internal+0xa2/0x670 [ 26.806802] ? ktime_get_with_offset+0x2c1/0x420 [ 26.806811] ? lock_release+0xa40/0xa40 [ 26.806814] ? do_gettimeofday+0x190/0x190 [ 26.806823] ? debug_object_fixup+0x30/0x30 [ 26.806828] ? find_held_lock+0x35/0x1d0 [ 26.806837] __netif_receive_skb+0x2c/0x1b0 [ 26.806842] ? __netif_receive_skb+0x2c/0x1b0 [ 26.806850] netif_receive_skb_internal+0x10b/0x670 [ 26.806856] ? dev_cpu_dead+0xb00/0xb00 [ 26.806865] ? __do_once_done+0xf2/0x300 [ 26.806872] ? rcu_pm_notify+0xc0/0xc0 [ 26.806889] netif_receive_skb+0xae/0x390 [ 26.806896] ? netif_receive_skb_internal+0x670/0x670 [ 26.806905] ? find_held_lock+0x35/0x1d0 [ 26.806917] ? tun_rx_batched.isra.51+0x5c4/0x870 [ 26.806926] tun_rx_batched.isra.51+0x5ee/0x870 [ 26.806936] ? tun_sock_write_space+0x370/0x370 [ 26.806956] tun_get_user+0x25de/0x3940 [ 26.806963] ? finish_task_switch+0x1d3/0x740 [ 26.806979] ? release_thread+0xe0/0xf0 [ 26.806988] ? tun_build_skb.isra.49+0x1810/0x1810 [ 26.806995] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.807005] ? trace_hardirqs_on+0xd/0x10 [ 26.807012] ? mmdrop+0x18/0x30 [ 26.807018] ? finish_task_switch+0x1f6/0x740 [ 26.807029] ? copy_overflow+0x20/0x20 [ 26.807049] ? tun_get+0x1ab/0x2e0 [ 26.807055] ? __sched_text_start+0x8/0x8 [ 26.807063] ? lock_release+0xa40/0xa40 [ 26.807070] ? __lock_is_held+0xb6/0x140 [ 26.807087] ? tun_get+0x1d4/0x2e0 [ 26.807092] ? tun_do_read+0x2600/0x2600 [ 26.807105] tun_chr_write_iter+0xb9/0x160 [ 26.807114] __vfs_write+0x684/0x970 [ 26.807122] ? kernel_read+0x120/0x120 [ 26.807131] ? _cond_resched+0x14/0x30 [ 26.807141] ? avc_policy_seqno+0x9/0x20 [ 26.807146] ? selinux_file_permission+0x82/0x460 [ 26.807160] ? rw_verify_area+0xe5/0x2b0 [ 26.807165] ? __fdget_raw+0x20/0x20 [ 26.807173] vfs_write+0x189/0x510 [ 26.807182] SyS_write+0xef/0x220 [ 26.807189] ? SyS_read+0x220/0x220 [ 26.807193] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 26.807199] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.807211] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 26.807214] RIP: 0033:0x444b49 [ 26.807217] RSP: 002b:00000000007eff38 EFLAGS: 00000297 ORIG_RAX: 0000000000000001 [ 26.807221] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 0000000000444b49 [ 26.807223] RDX: 0000000000000084 RSI: 0000000020ab08cd RDI: 0000000000000005 [ 26.807225] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 26.807228] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000402740 [ 26.807230] R13: 00000000004027d0 R14: 0000000000000000 R15: 0000000000000000 [ 26.823486] Dumping ftrace buffer: [ 26.823551] (ftrace buffer empty) [ 26.823553] Kernel Offset: disabled [ 27.333616] Rebooting in 86400 seconds..