[....] Starting enhanced syslogd: rsyslogd[ 16.933389] audit: type=1400 audit(1521673869.736:5): avc: denied { syslog } for pid=4097 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: [ 19.600306] audit: type=1400 audit(1521673872.403:6): avc: denied { map } for pid=4236 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 '10.128.0.31' (ECDSA) to the list of known hosts. executing program [ 43.879685] audit: type=1400 audit(1521673896.682:7): avc: denied { map } for pid=4253 comm="syzkaller861044" path="/root/syzkaller861044445" 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 [ 49.120134] kasan: CONFIG_KASAN_INLINE enabled [ 49.124841] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 49.132225] general protection fault: 0000 [#1] SMP KASAN [ 49.137736] Dumping ftrace buffer: [ 49.141248] (ftrace buffer empty) [ 49.144929] Modules linked in: [ 49.148094] CPU: 0 PID: 4253 Comm: syzkaller861044 Not tainted 4.16.0-rc6+ #271 [ 49.155509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 49.164947] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 49.170024] RSP: 0018:ffff8801d2f5fc78 EFLAGS: 00010206 [ 49.175361] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 49.182602] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 49.189841] RBP: ffff8801d2f5fc90 R08: 0000000000000000 R09: 1ffff1003a5ebf0b [ 49.197078] R10: ffff8801d2f5f820 R11: 0000000000000001 R12: ffff8801afaed7d2 [ 49.204317] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d2f5fd08 [ 49.211557] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000099ea840 [ 49.220034] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 49.225885] CR2: 0000558f30e17110 CR3: 00000001b22aa002 CR4: 00000000001606f0 [ 49.233126] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.240365] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.247603] Call Trace: [ 49.250168] smc_shutdown+0x3ed/0x540 [ 49.253943] SyS_shutdown+0x137/0x290 [ 49.257716] ? SyS_getsockopt+0x340/0x340 [ 49.261839] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 49.267344] ? do_fast_syscall_32+0x156/0xf9f [ 49.271810] ? SyS_getsockopt+0x340/0x340 [ 49.275928] do_fast_syscall_32+0x3ec/0xf9f [ 49.280220] ? do_int80_syscall_32+0x9c0/0x9c0 [ 49.284771] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 49.290278] ? syscall_return_slowpath+0x550/0x550 [ 49.295175] ? syscall_return_slowpath+0x2ac/0x550 [ 49.300079] ? sysret32_from_system_call+0x5/0x3c [ 49.304892] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.309705] entry_SYSENTER_compat+0x70/0x7f [ 49.314083] RIP: 0023:0xf7f6bc99 [ 49.317414] RSP: 002b:00000000ff8191cc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 49.325090] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 49.332327] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 49.339564] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 49.346802] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 49.354044] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 49.361290] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 49.380357] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d2f5fc78 [ 49.387087] ---[ end trace 6a98cdb099dc6576 ]--- [ 49.391839] Kernel panic - not syncing: Fatal exception [ 49.397553] Dumping ftrace buffer: [ 49.401068] (ftrace buffer empty) [ 49.404752] Kernel Offset: disabled [ 49.408350] Rebooting in 86400 seconds..