[....] Starting enhanced syslogd: rsyslogd[ 16.516404] audit: type=1400 audit(1520903884.610:5): avc: denied { syslog } for pid=4082 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 18.655464] audit: type=1400 audit(1520903886.749:6): avc: denied { map } for pid=4219 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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program [ 24.981438] audit: type=1400 audit(1520903893.075:7): avc: denied { map } for pid=4233 comm="syzkaller320740" path="/root/syzkaller320740398" 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 [ 30.175134] kasan: CONFIG_KASAN_INLINE enabled [ 30.179812] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.187349] general protection fault: 0000 [#1] SMP KASAN [ 30.192868] Dumping ftrace buffer: [ 30.196377] (ftrace buffer empty) [ 30.200055] Modules linked in: [ 30.203218] CPU: 0 PID: 4233 Comm: syzkaller320740 Not tainted 4.16.0-rc5+ #352 [ 30.210630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.219957] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.225027] RSP: 0018:ffff8801b0d87cc8 EFLAGS: 00010206 [ 30.230357] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 30.237593] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.244830] RBP: ffff8801b0d87ce0 R08: 0000000000000000 R09: 1ffff100361b0f15 [ 30.252067] R10: ffff8801b0d87870 R11: 0000000000000001 R12: ffff8801b17c37d2 [ 30.259307] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0d87d58 [ 30.266546] FS: 000000000237f880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 30.274741] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.280591] CR2: 000000000077b928 CR3: 00000001ad939004 CR4: 00000000001606f0 [ 30.287830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.295070] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.302306] Call Trace: [ 30.304866] smc_shutdown+0x3ed/0x540 [ 30.308637] SyS_shutdown+0x137/0x290 [ 30.312409] ? SyS_getsockopt+0x340/0x340 [ 30.316528] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.322037] ? do_syscall_64+0xb7/0x940 [ 30.325981] ? SyS_getsockopt+0x340/0x340 [ 30.330096] do_syscall_64+0x281/0x940 [ 30.333951] ? __do_page_fault+0xc90/0xc90 [ 30.338152] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.342878] ? syscall_return_slowpath+0x550/0x550 [ 30.347774] ? syscall_return_slowpath+0x2ac/0x550 [ 30.352672] ? prepare_exit_to_usermode+0x350/0x350 [ 30.357659] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.362993] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.367814] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.372979] RIP: 0033:0x43fcb9 [ 30.376139] RSP: 002b:00007ffd027437d8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.383814] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.391054] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.398290] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.405526] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.412762] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.420010] 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 [ 30.439086] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0d87cc8 [ 30.445717] ---[ end trace 7301a601a4fb76f2 ]--- [ 30.450464] Kernel panic - not syncing: Fatal exception [ 30.456174] Dumping ftrace buffer: [ 30.459684] (ftrace buffer empty) [ 30.463360] Kernel Offset: disabled [ 30.466955] Rebooting in 86400 seconds..