[....] Starting enhanced syslogd: rsyslogd[ 12.532851] audit: type=1400 audit(1516034115.864:5): avc: denied { syslog } for pid=3509 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: [ 17.208505] audit: type=1400 audit(1516034120.540:6): avc: denied { map } for pid=3648 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 '10.128.0.62' (ECDSA) to the list of known hosts. executing program [ 23.426834] audit: type=1400 audit(1516034126.758:7): avc: denied { map } for pid=3662 comm="syzkaller598565" path="/root/syzkaller598565173" 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 [ 23.472812] device eql entered promiscuous mode [ 23.479472] ------------[ cut here ]------------ [ 23.484278] PF_CAN: dropped non conform CAN skbuf: dev type 65534, len 42, datalen 0 [ 23.492268] WARNING: CPU: 1 PID: 3663 at net/can/af_can.c:729 can_rcv+0x1c5/0x200 [ 23.499857] Kernel panic - not syncing: panic_on_warn set ... [ 23.499857] [ 23.507190] CPU: 1 PID: 3663 Comm: syzkaller598565 Not tainted 4.15.0-rc7-next-20180115+ #97 [ 23.515729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.525051] Call Trace: [ 23.527612] dump_stack+0x194/0x257 [ 23.531211] ? arch_local_irq_restore+0x53/0x53 [ 23.535886] ? vsnprintf+0x1ed/0x1900 [ 23.539664] panic+0x1e4/0x41c [ 23.542828] ? refcount_error_report+0x214/0x214 [ 23.547556] ? show_regs_print_info+0x18/0x18 [ 23.552037] ? __warn+0x1c1/0x200 [ 23.555465] ? can_rcv+0x1c5/0x200 [ 23.558973] __warn+0x1dc/0x200 [ 23.562221] ? console_unlock+0x978/0xd70 [ 23.566336] ? can_rcv+0x1c5/0x200 [ 23.569849] report_bug+0x211/0x2d0 [ 23.573448] fixup_bug.part.11+0x37/0x80 [ 23.577476] do_error_trap+0x2d7/0x3e0 [ 23.581333] ? __down_trylock_console_sem+0x10d/0x1e0 [ 23.586500] ? math_error+0x400/0x400 [ 23.590276] ? vprintk_emit+0x3ea/0x590 [ 23.594231] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.599048] do_invalid_op+0x1b/0x20 [ 23.602729] invalid_op+0x22/0x40 [ 23.606147] RIP: 0010:can_rcv+0x1c5/0x200 [ 23.610255] RSP: 0018:ffff8801d99f7028 EFLAGS: 00010286 [ 23.615584] RAX: dffffc0000000008 RBX: ffff8801baa8b2c0 RCX: ffffffff815aba6e [ 23.622822] RDX: 0000000000000000 RSI: ffff8801d9a36cb8 RDI: 1ffff1003b33edc0 [ 23.630058] RBP: ffff8801d99f7050 R08: 0000000000000000 R09: 0000000000000000 [ 23.637296] R10: ffff8801d99f7570 R11: 0000000000000000 R12: ffff8801d9ff8380 [ 23.644535] R13: ffff8801ba9c8580 R14: 000000000000fffe R15: ffffffff87056080 [ 23.651785] ? vprintk_func+0x5e/0xc0 [ 23.655567] ? can_rcv+0x1c5/0x200 [ 23.659075] ? can_receive+0x4d0/0x4d0 [ 23.662935] __netif_receive_skb_core+0x1a41/0x3460 [ 23.667929] ? nf_ingress+0x9f0/0x9f0 [ 23.671698] ? check_noncircular+0x20/0x20 [ 23.675913] ? __skb_flow_dissect+0x49a/0x3f90 [ 23.680469] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 23.685640] ? __skb_flow_get_ports+0x420/0x420 [ 23.690279] ? check_noncircular+0x20/0x20 [ 23.694483] ? __lock_is_held+0xb6/0x140 [ 23.698510] ? lock_downgrade+0x980/0x980 [ 23.702643] ? find_held_lock+0x35/0x1d0 [ 23.706678] ? find_held_lock+0x35/0x1d0 [ 23.710713] ? netif_receive_skb_internal+0x1d7/0x670 [ 23.715870] ? lock_downgrade+0x980/0x980 [ 23.719996] ? pvclock_read_flags+0x160/0x160 [ 23.724465] ? lock_acquire+0x1d5/0x580 [ 23.728403] ? lock_acquire+0x1d5/0x580 [ 23.732343] ? netif_receive_skb_internal+0xa2/0x670 [ 23.737418] ? ktime_get_with_offset+0x2c1/0x420 [ 23.742147] ? lock_release+0xa40/0xa40 [ 23.746084] ? do_gettimeofday+0x190/0x190 [ 23.750289] ? debug_object_fixup+0x30/0x30 [ 23.754576] ? find_held_lock+0x35/0x1d0 [ 23.758618] __netif_receive_skb+0x2c/0x1b0 [ 23.762906] ? __netif_receive_skb+0x2c/0x1b0 [ 23.767370] netif_receive_skb_internal+0x10b/0x670 [ 23.772355] ? dev_cpu_dead+0xb00/0xb00 [ 23.776298] ? __do_once_done+0xf2/0x300 [ 23.780330] ? rcu_pm_notify+0xc0/0xc0 [ 23.784197] netif_receive_skb+0xae/0x390 [ 23.788314] ? netif_receive_skb_internal+0x670/0x670 [ 23.793474] ? find_held_lock+0x35/0x1d0 [ 23.797507] ? tun_rx_batched.isra.51+0x5c4/0x870 [ 23.802320] tun_rx_batched.isra.51+0x5ee/0x870 [ 23.806960] ? tun_sock_write_space+0x370/0x370 [ 23.811613] tun_get_user+0x25de/0x3940 [ 23.815555] ? finish_task_switch+0x1d3/0x740 [ 23.820030] ? release_thread+0xe0/0xf0 [ 23.823974] ? tun_build_skb.isra.49+0x1810/0x1810 [ 23.828879] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.833887] ? trace_hardirqs_on+0xd/0x10 [ 23.838007] ? mmdrop+0x18/0x30 [ 23.841258] ? finish_task_switch+0x1f6/0x740 [ 23.845722] ? copy_overflow+0x20/0x20 [ 23.849595] ? tun_get+0x1ab/0x2e0 [ 23.853105] ? __sched_text_start+0x8/0x8 [ 23.857222] ? lock_release+0xa40/0xa40 [ 23.861175] ? __lock_is_held+0xb6/0x140 [ 23.865210] ? tun_get+0x1d4/0x2e0 [ 23.868719] ? tun_do_read+0x2600/0x2600 [ 23.872756] tun_chr_write_iter+0xb9/0x160 [ 23.876960] __vfs_write+0x684/0x970 [ 23.880647] ? kernel_read+0x120/0x120 [ 23.884509] ? _cond_resched+0x14/0x30 [ 23.888368] ? avc_policy_seqno+0x9/0x20 [ 23.892396] ? selinux_file_permission+0x82/0x460 [ 23.897215] ? rw_verify_area+0xe5/0x2b0 [ 23.901253] ? __fdget_raw+0x20/0x20 [ 23.904938] vfs_write+0x189/0x510 [ 23.908451] SyS_write+0xef/0x220 [ 23.911876] ? SyS_read+0x220/0x220 [ 23.915469] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 23.920462] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 23.925194] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 23.929917] RIP: 0033:0x4445d9 [ 23.933078] RSP: 002b:00007ffcc39982d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000001 [ 23.940756] RAX: ffffffffffffffda RBX: ffffffffffffffff RCX: 00000000004445d9 [ 23.947998] RDX: 000000000000002e RSI: 0000000020b61fd2 RDI: 0000000000000004 [ 23.955235] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 23.962473] R10: 0000000000000000 R11: 0000000000000217 R12: 00000000006c7165 [ 23.969715] R13: 0000000000401fb0 R14: 0000000000000000 R15: 0000000000000000 [ 23.977164] Dumping ftrace buffer: [ 23.980709] (ftrace buffer empty) [ 23.984388] Kernel Offset: disabled [ 23.987982] Rebooting in 86400 seconds..