[....] Starting enhanced syslogd: rsyslogd[ 17.158354] audit: type=1400 audit(1521081432.808:5): avc: denied { syslog } for pid=4087 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: [ 23.200863] audit: type=1400 audit(1521081438.850:6): avc: denied { map } for pid=4227 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 '10.128.0.45' (ECDSA) to the list of known hosts. executing program [ 29.529472] audit: type=1400 audit(1521081445.179:7): avc: denied { map } for pid=4241 comm="syzkaller774787" path="/root/syzkaller774787452" 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 [ 34.784635] kasan: CONFIG_KASAN_INLINE enabled [ 34.789438] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.796862] general protection fault: 0000 [#1] SMP KASAN [ 34.802386] Dumping ftrace buffer: [ 34.805901] (ftrace buffer empty) [ 34.809586] Modules linked in: [ 34.812751] CPU: 1 PID: 4241 Comm: syzkaller774787 Not tainted 4.16.0-rc5+ #263 [ 34.820167] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.829499] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.834571] RSP: 0018:ffff8801afa87c78 EFLAGS: 00010206 [ 34.839921] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fe6f4 [ 34.847162] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.854408] RBP: ffff8801afa87c90 R08: 0000000000000000 R09: 1ffff10035f50f0b [ 34.861650] R10: ffff8801afa87820 R11: 0000000000000001 R12: ffff8801ada807d2 [ 34.868890] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801afa87d08 [ 34.876134] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009961840 [ 34.884330] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.890186] CR2: 00007f71af489000 CR3: 00000001b03bc001 CR4: 00000000001606e0 [ 34.897433] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.904677] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.911918] Call Trace: [ 34.914483] smc_shutdown+0x3ed/0x540 [ 34.918257] SyS_shutdown+0x137/0x290 [ 34.922034] ? SyS_getsockopt+0x340/0x340 [ 34.926158] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.931667] ? do_fast_syscall_32+0x156/0xf9f [ 34.936136] ? SyS_getsockopt+0x340/0x340 [ 34.940256] do_fast_syscall_32+0x3ec/0xf9f [ 34.944553] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.949106] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.954613] ? syscall_return_slowpath+0x550/0x550 [ 34.959511] ? syscall_return_slowpath+0x2ac/0x550 [ 34.964427] ? sysret32_from_system_call+0x5/0x3c [ 34.969243] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.974061] entry_SYSENTER_compat+0x70/0x7f [ 34.978441] RIP: 0023:0xf7f0cc99 [ 34.981777] RSP: 002b:00000000ff8095dc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.989565] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.996807] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.004048] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.011287] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.018523] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.025776] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 30 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 [ 35.044847] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801afa87c78 [ 35.051491] ---[ end trace f271390ac374abca ]--- [ 35.056237] Kernel panic - not syncing: Fatal exception [ 35.061960] Dumping ftrace buffer: [ 35.065469] (ftrace buffer empty) [ 35.069148] Kernel Offset: disabled [ 35.072745] Rebooting in 86400 seconds..