[....] Starting enhanced syslogd: rsyslogd[ 16.559105] audit: type=1400 audit(1520626400.424:5): avc: denied { syslog } for pid=4007 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: [ 22.897121] audit: type=1400 audit(1520626406.762:6): avc: denied { map } for pid=4147 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 '10.128.0.63' (ECDSA) to the list of known hosts. executing program [ 50.039762] audit: type=1400 audit(1520626433.905:7): avc: denied { map } for pid=4163 comm="syzkaller019241" path="/root/syzkaller019241903" 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 [ 55.263521] kasan: CONFIG_KASAN_INLINE enabled [ 55.268242] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 55.275628] general protection fault: 0000 [#1] SMP KASAN [ 55.281134] Dumping ftrace buffer: [ 55.284643] (ftrace buffer empty) [ 55.288322] Modules linked in: [ 55.291511] CPU: 1 PID: 4163 Comm: syzkaller019241 Not tainted 4.16.0-rc4+ #257 [ 55.298924] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.308263] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 55.313333] RSP: 0018:ffff8801bf7ffc78 EFLAGS: 00010206 [ 55.318663] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 55.325899] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 55.333137] RBP: ffff8801bf7ffc90 R08: 0000000000000000 R09: 1ffff10037efff0b [ 55.340375] R10: ffff8801bf7ff820 R11: 0000000000000001 R12: ffff8801bf7c47d2 [ 55.347614] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bf7ffd08 [ 55.354856] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008cf0840 [ 55.363054] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 55.368903] CR2: 00005615f75fc110 CR3: 00000001bf097006 CR4: 00000000001606e0 [ 55.376143] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 55.383385] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 55.390625] Call Trace: [ 55.393189] smc_shutdown+0x3ed/0x540 [ 55.396962] SyS_shutdown+0x137/0x290 [ 55.400742] ? SyS_getsockopt+0x340/0x340 [ 55.404862] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 55.410367] ? do_fast_syscall_32+0x156/0xf9f [ 55.414837] ? SyS_getsockopt+0x340/0x340 [ 55.418971] do_fast_syscall_32+0x3ec/0xf9f [ 55.423267] ? do_int80_syscall_32+0x9c0/0x9c0 [ 55.427822] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 55.432547] ? syscall_return_slowpath+0x550/0x550 [ 55.437446] ? syscall_return_slowpath+0x2ac/0x550 [ 55.442345] ? prepare_exit_to_usermode+0x350/0x350 [ 55.447335] ? sysret32_from_system_call+0x5/0x3c [ 55.452147] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 55.456967] entry_SYSENTER_compat+0x70/0x7f [ 55.461344] RIP: 0023:0xf7f76c99 [ 55.464678] RSP: 002b:00000000ff9cf37c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 55.472360] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 55.479601] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 55.486840] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 55.494078] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 55.501320] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 55.508570] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 5c 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 [ 55.527642] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bf7ffc78 [ 55.534261] ---[ end trace bb5788f8f3a27c23 ]--- [ 55.539003] Kernel panic - not syncing: Fatal exception [ 55.544712] Dumping ftrace buffer: [ 55.548220] (ftrace buffer empty) [ 55.551903] Kernel Offset: disabled [ 55.555504] Rebooting in 86400 seconds..