[....] Starting enhanced syslogd: rsyslogd[ 15.697815] audit: type=1400 audit(1520433098.627:5): avc: denied { syslog } for pid=3959 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: [ 21.972727] audit: type=1400 audit(1520433104.902:6): avc: denied { map } for pid=4100 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 '10.128.10.7' (ECDSA) to the list of known hosts. executing program [ 28.250430] audit: type=1400 audit(1520433111.180:7): avc: denied { map } for pid=4115 comm="syzkaller117043" path="/root/syzkaller117043924" 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 [ 33.760168] kasan: CONFIG_KASAN_INLINE enabled [ 33.765194] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.772609] general protection fault: 0000 [#1] SMP KASAN [ 33.778128] Dumping ftrace buffer: [ 33.781637] (ftrace buffer empty) [ 33.785315] Modules linked in: [ 33.788481] CPU: 0 PID: 4115 Comm: syzkaller117043 Not tainted 4.16.0-rc4+ #254 [ 33.795903] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.805231] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.810305] RSP: 0018:ffff8801b9d87c78 EFLAGS: 00010206 [ 33.815635] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 33.822873] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.830112] RBP: ffff8801b9d87c90 R08: 0000000000000000 R09: 1ffff100373b0f0b [ 33.837350] R10: ffff8801b9d87820 R11: 0000000000000001 R12: ffff8801cc05b7d2 [ 33.844589] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b9d87d08 [ 33.851830] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009679840 [ 33.860027] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.865878] CR2: 00000000018ad6c0 CR3: 00000001b4ce2001 CR4: 00000000001606f0 [ 33.873129] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.880394] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.887640] Call Trace: [ 33.890210] smc_shutdown+0x3ed/0x540 [ 33.893981] SyS_shutdown+0x137/0x290 [ 33.897749] ? SyS_getsockopt+0x340/0x340 [ 33.901868] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.907382] ? do_fast_syscall_32+0x156/0xf9f [ 33.911877] ? SyS_getsockopt+0x340/0x340 [ 33.916005] do_fast_syscall_32+0x3ec/0xf9f [ 33.920301] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.924853] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.929577] ? syscall_return_slowpath+0x550/0x550 [ 33.934478] ? syscall_return_slowpath+0x2ac/0x550 [ 33.939390] ? prepare_exit_to_usermode+0x350/0x350 [ 33.944379] ? sysret32_from_system_call+0x5/0x3c [ 33.949191] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.954008] entry_SYSENTER_compat+0x70/0x7f [ 33.958388] RIP: 0023:0xf7f1ac99 [ 33.961723] RSP: 002b:00000000ff8fd67c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.969401] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.976648] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.983888] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.991129] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.999008] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.006262] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 1c 2f 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 [ 34.025343] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b9d87c78 [ 34.031971] ---[ end trace b6eac97a4400a184 ]--- [ 34.036714] Kernel panic - not syncing: Fatal exception [ 34.042479] Dumping ftrace buffer: [ 34.045987] (ftrace buffer empty) [ 34.049665] Kernel Offset: disabled [ 34.053261] Rebooting in 86400 seconds..