[....] Starting enhanced syslogd: rsyslogd[ 16.273856] audit: type=1400 audit(1520684672.336:5): avc: denied { syslog } for pid=3967 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: [ 22.604508] audit: type=1400 audit(1520684678.667:6): avc: denied { map } for pid=4105 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 '10.128.0.7' (ECDSA) to the list of known hosts. executing program [ 28.909710] audit: type=1400 audit(1520684684.972:7): avc: denied { map } for pid=4119 comm="syzkaller772081" path="/root/syzkaller772081317" 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 [ 34.272134] kasan: CONFIG_KASAN_INLINE enabled [ 34.276829] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284380] general protection fault: 0000 [#1] SMP KASAN [ 34.289898] Dumping ftrace buffer: [ 34.293411] (ftrace buffer empty) [ 34.297092] Modules linked in: [ 34.300261] CPU: 1 PID: 4119 Comm: syzkaller772081 Not tainted 4.16.0-rc4+ #258 [ 34.307674] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317009] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322080] RSP: 0018:ffff8801d3fb7c78 EFLAGS: 00010206 [ 34.327411] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 34.334651] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341893] RBP: ffff8801d3fb7c90 R08: 0000000000000000 R09: 1ffff1003a7f6f0b [ 34.349134] R10: ffff8801d3fb7820 R11: 0000000000000001 R12: ffff8801c278b7d2 [ 34.356372] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d3fb7d08 [ 34.363615] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:000000000917e840 [ 34.371811] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.377661] CR2: 0000000000b08d40 CR3: 00000001c26b6006 CR4: 00000000001606e0 [ 34.384903] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392141] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399380] Call Trace: [ 34.401944] smc_shutdown+0x3ed/0x540 [ 34.405717] SyS_shutdown+0x137/0x290 [ 34.409488] ? SyS_getsockopt+0x340/0x340 [ 34.413610] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419117] ? do_fast_syscall_32+0x156/0xf9f [ 34.423585] ? SyS_getsockopt+0x340/0x340 [ 34.427700] do_fast_syscall_32+0x3ec/0xf9f [ 34.431994] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.436547] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.442052] ? syscall_return_slowpath+0x550/0x550 [ 34.446951] ? syscall_return_slowpath+0x2ac/0x550 [ 34.451852] ? sysret32_from_system_call+0x5/0x3c [ 34.456671] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.461578] entry_SYSENTER_compat+0x70/0x7f [ 34.465954] RIP: 0023:0xf7feac99 [ 34.469288] RSP: 002b:00000000ffe09d3c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.476963] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.484210] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.491448] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.498686] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.505925] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.513169] 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 [ 34.532243] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d3fb7c78 [ 34.538858] ---[ end trace 541d491c0a2d4947 ]--- [ 34.543601] Kernel panic - not syncing: Fatal exception [ 34.549288] Dumping ftrace buffer: [ 34.552796] (ftrace buffer empty) [ 34.556480] Kernel Offset: disabled [ 34.560078] Rebooting in 86400 seconds..