[....] Starting enhanced syslogd: rsyslogd[ 12.628217] audit: type=1400 audit(1516034132.905:5): avc: denied { syslog } for pid=3496 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 mcstransd: [....] Starting file context maintaining daemon: restorecond[?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 syzkaller login: [ 18.910132] audit: type=1400 audit(1516034139.186:6): avc: denied { map } for pid=3636 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 '10.128.0.4' (ECDSA) to the list of known hosts. [ 25.097791] audit: type=1400 audit(1516034145.374:7): avc: denied { map } for pid=3650 comm="syzkaller662789" path="/root/syzkaller662789765" 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 [ 25.288669] device eql entered promiscuous mode [ 25.294581] ------------[ cut here ]------------ [ 25.299381] PF_CAN: dropped non conform CAN skbuf: dev type 65534, len 42, datalen 0 [ 25.307418] WARNING: CPU: 1 PID: 3651 at net/can/af_can.c:729 can_rcv+0x1c5/0x200 [ 25.315044] Kernel panic - not syncing: panic_on_warn set ... [ 25.315044] [ 25.322381] CPU: 1 PID: 3651 Comm: syzkaller662789 Not tainted 4.15.0-rc8+ #173 [ 25.329892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.339216] Call Trace: [ 25.341786] dump_stack+0x194/0x257 [ 25.345392] ? arch_local_irq_restore+0x53/0x53 [ 25.350039] ? vsnprintf+0x1ed/0x1900 [ 25.353815] panic+0x1e4/0x41c [ 25.356991] ? refcount_error_report+0x214/0x214 [ 25.361729] ? show_regs_print_info+0x18/0x18 [ 25.366211] ? __warn+0x1c1/0x200 [ 25.369645] ? can_rcv+0x1c5/0x200 [ 25.373155] __warn+0x1dc/0x200 [ 25.376404] ? console_unlock+0x983/0xd80 [ 25.380539] ? can_rcv+0x1c5/0x200 [ 25.384071] report_bug+0x211/0x2d0 [ 25.387682] fixup_bug.part.11+0x37/0x80 [ 25.391723] do_error_trap+0x2d7/0x3e0 [ 25.395583] ? __down_trylock_console_sem+0x10d/0x1e0 [ 25.400758] ? math_error+0x400/0x400 [ 25.404534] ? vprintk_emit+0x3ea/0x590 [ 25.408493] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.413312] do_invalid_op+0x1b/0x20 [ 25.417000] invalid_op+0x22/0x40 [ 25.420426] RIP: 0010:can_rcv+0x1c5/0x200 [ 25.424543] RSP: 0018:ffff8801bc3beed8 EFLAGS: 00010286 [ 25.429875] RAX: dffffc0000000008 RBX: ffff8801c3fbce40 RCX: ffffffff8159dade [ 25.437129] RDX: 0000000000000000 RSI: 1ffff10037877d96 RDI: ffff8801bc3bebe0 [ 25.444387] RBP: ffff8801bc3bef00 R08: 0000000000000000 R09: 0000000000000000 [ 25.451644] R10: ffff8801bc3bf418 R11: 0000000000000000 R12: ffff8801bc740340 [ 25.458895] R13: ffff8801c3fba380 R14: 000000000000fffe R15: ffffffff8704d800 [ 25.466159] ? vprintk_func+0x5e/0xc0 [ 25.469956] ? can_rcv+0x1c5/0x200 [ 25.473483] ? can_receive+0x4d0/0x4d0 [ 25.477467] __netif_receive_skb_core+0x1a41/0x3460 [ 25.482479] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.487649] ? nf_ingress+0x9f0/0x9f0 [ 25.491449] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 25.496615] ? is_bpf_text_address+0x7b/0x120 [ 25.501092] ? check_noncircular+0x20/0x20 [ 25.505298] ? __skb_flow_get_ports+0x420/0x420 [ 25.509943] ? __lock_is_held+0xb6/0x140 [ 25.513994] ? find_held_lock+0x35/0x1d0 [ 25.518038] ? find_held_lock+0x35/0x1d0 [ 25.522077] ? lock_downgrade+0x980/0x980 [ 25.526212] ? pvclock_read_flags+0x160/0x160 [ 25.530697] ? lock_acquire+0x1d5/0x580 [ 25.534646] ? lock_acquire+0x1d5/0x580 [ 25.538593] ? netif_receive_skb_internal+0xa2/0x670 [ 25.543668] ? ktime_get_with_offset+0x2c1/0x420 [ 25.548399] ? lock_release+0xa40/0xa40 [ 25.552344] ? do_gettimeofday+0x190/0x190 [ 25.556553] ? debug_object_fixup+0x30/0x30 [ 25.560860] ? find_held_lock+0x35/0x1d0 [ 25.564912] __netif_receive_skb+0x2c/0x1b0 [ 25.569209] ? __netif_receive_skb+0x2c/0x1b0 [ 25.573678] netif_receive_skb_internal+0x10b/0x670 [ 25.578665] ? dev_cpu_dead+0xb00/0xb00 [ 25.582617] ? __do_once_done+0xf2/0x300 [ 25.586658] ? rcu_pm_notify+0xc0/0xc0 [ 25.590529] netif_receive_skb+0xae/0x390 [ 25.594646] ? netif_receive_skb_internal+0x670/0x670 [ 25.599829] ? __skb_get_hash_symmetric+0xd1/0xa70 [ 25.604758] ? tun_rx_batched.isra.50+0x5c4/0x870 [ 25.609596] tun_rx_batched.isra.50+0x5ee/0x870 [ 25.614239] ? skb_probe_transport_header.constprop.68+0x14a/0x2f0 [ 25.620538] ? tun_sock_write_space+0x370/0x370 [ 25.625200] tun_get_user+0x24ac/0x3710 [ 25.629165] ? tun_build_skb.isra.48+0x17d0/0x17d0 [ 25.634073] ? lock_release+0xa40/0xa40 [ 25.638022] ? do_raw_spin_trylock+0x190/0x190 [ 25.642579] ? _raw_spin_unlock_irq+0x27/0x70 [ 25.647064] ? tun_get+0x1ab/0x2e0 [ 25.650585] ? lock_release+0xa40/0xa40 [ 25.654535] ? __lock_is_held+0xb6/0x140 [ 25.658578] ? tun_get+0x1d4/0x2e0 [ 25.662090] ? tun_chr_close+0x60/0x60 [ 25.665965] tun_chr_write_iter+0xb9/0x160 [ 25.670172] __vfs_write+0x684/0x970 [ 25.673859] ? kernel_read+0x120/0x120 [ 25.677723] ? _cond_resched+0x14/0x30 [ 25.681583] ? avc_policy_seqno+0x9/0x20 [ 25.685615] ? selinux_file_permission+0x82/0x460 [ 25.690439] ? rw_verify_area+0xe5/0x2b0 [ 25.694480] ? __fdget_raw+0x20/0x20 [ 25.698191] vfs_write+0x189/0x510 [ 25.701711] SyS_write+0xef/0x220 [ 25.705137] ? exit_to_usermode_loop+0x198/0x310 [ 25.709866] ? SyS_read+0x220/0x220 [ 25.713479] ? do_fast_syscall_32+0x156/0xf9d [ 25.717957] ? SyS_read+0x220/0x220 [ 25.721556] do_fast_syscall_32+0x3ee/0xf9d [ 25.725855] ? do_int80_syscall_32+0x9d0/0x9d0 [ 25.730410] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 25.735144] ? syscall_return_slowpath+0x2ad/0x550 [ 25.740046] ? prepare_exit_to_usermode+0x340/0x340 [ 25.745034] ? sysret32_from_system_call+0x5/0x3b [ 25.749854] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 25.754675] entry_SYSENTER_compat+0x54/0x63 [ 25.759055] RIP: 0023:0xf7f27c79 [ 25.762389] RSP: 002b:00000000ffbe841c EFLAGS: 00000217 ORIG_RAX: 0000000000000004 [ 25.770089] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020b61fd2 [ 25.777335] RDX: 000000000000002e RSI: 0000000000000036 RDI: 0000000000000003 [ 25.784578] RBP: 0000000000008914 R08: 0000000000000000 R09: 0000000000000000 [ 25.791817] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 25.799061] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 25.806915] Dumping ftrace buffer: [ 25.810502] (ftrace buffer empty) [ 25.814183] Kernel Offset: disabled [ 25.817792] Rebooting in 86400 seconds..