[....] Starting enhanced syslogd: rsyslogd[ 16.242082] audit: type=1400 audit(1521193033.341:5): avc: denied { syslog } for pid=4084 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 periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 19.617861] audit: type=1400 audit(1521193036.717:6): avc: denied { map } for pid=4223 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program [ 25.953745] audit: type=1400 audit(1521193043.053:7): avc: denied { map } for pid=4237 comm="syzkaller259655" path="/root/syzkaller259655996" 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 [ 31.199194] kasan: CONFIG_KASAN_INLINE enabled [ 31.203974] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.211356] general protection fault: 0000 [#1] SMP KASAN [ 31.216877] Dumping ftrace buffer: [ 31.220391] (ftrace buffer empty) [ 31.224075] Modules linked in: [ 31.227242] CPU: 0 PID: 4237 Comm: syzkaller259655 Not tainted 4.16.0-rc5+ #265 [ 31.234668] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244025] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249111] RSP: 0018:ffff8801b073fc78 EFLAGS: 00010206 [ 31.254452] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 31.261701] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.268951] RBP: ffff8801b073fc90 R08: 0000000000000000 R09: 1ffff100360e7f0b [ 31.276204] R10: ffff8801b073f820 R11: 0000000000000001 R12: ffff8801b16d17d2 [ 31.283457] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b073fd08 [ 31.290703] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009ad6840 [ 31.298898] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.304750] CR2: 0000000002423070 CR3: 00000001b118f005 CR4: 00000000001606f0 [ 31.311993] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319246] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.326490] Call Trace: [ 31.329063] smc_shutdown+0x3ed/0x540 [ 31.332839] SyS_shutdown+0x137/0x290 [ 31.336612] ? SyS_getsockopt+0x340/0x340 [ 31.340758] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346268] ? do_fast_syscall_32+0x156/0xf9f [ 31.350735] ? SyS_getsockopt+0x340/0x340 [ 31.354851] do_fast_syscall_32+0x3ec/0xf9f [ 31.359147] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.363697] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.368423] ? syscall_return_slowpath+0x550/0x550 [ 31.373415] ? syscall_return_slowpath+0x2ac/0x550 [ 31.378342] ? prepare_exit_to_usermode+0x350/0x350 [ 31.383334] ? sysret32_from_system_call+0x5/0x3c [ 31.388150] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.392968] entry_SYSENTER_compat+0x70/0x7f [ 31.397347] RIP: 0023:0xf7f76c99 [ 31.400693] RSP: 002b:00000000ff96340c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 31.408370] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 31.415612] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 31.422852] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.430092] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.437335] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.444583] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 11 fd 48 8d 7b 28 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 32 4c 8b 63 28 48 b8 00 00 00 00 00 fc ff df 49 [ 31.463659] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b073fc78 [ 31.470324] ---[ end trace 5e58856558d50f7d ]--- [ 31.475074] Kernel panic - not syncing: Fatal exception [ 31.480795] Dumping ftrace buffer: [ 31.484309] (ftrace buffer empty) [ 31.487994] Kernel Offset: disabled [ 31.491599] Rebooting in 86400 seconds..