[....] Starting enhanced syslogd: rsyslogd[ 17.616503] audit: type=1400 audit(1519912017.148:5): avc: denied { syslog } for pid=4086 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 23.884280] audit: type=1400 audit(1519912023.416:6): 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 '10.128.0.21' (ECDSA) to the list of known hosts. executing program [ 30.197733] audit: type=1400 audit(1519912029.729:7): avc: denied { map } for pid=4241 comm="syzkaller355110" path="/root/syzkaller355110555" 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 [ 35.295137] kasan: CONFIG_KASAN_INLINE enabled [ 35.299848] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 35.307405] general protection fault: 0000 [#1] SMP KASAN [ 35.312928] Dumping ftrace buffer: [ 35.316703] (ftrace buffer empty) [ 35.320388] Modules linked in: [ 35.323568] CPU: 0 PID: 4241 Comm: syzkaller355110 Not tainted 4.16.0-rc3+ #244 [ 35.330987] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.340319] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 35.345402] RSP: 0018:ffff8801cc367c78 EFLAGS: 00010206 [ 35.350742] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 35.357985] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 35.365269] RBP: ffff8801cc367c90 R08: 0000000000000000 R09: 1ffff1003986cf0b [ 35.372512] R10: ffff8801cc367820 R11: 0000000000000001 R12: ffff8801b274b7d2 [ 35.379754] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cc367d08 [ 35.387019] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:000000000854e840 [ 35.395229] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 35.401087] CR2: 00007f2dbfec2000 CR3: 00000001a8b56004 CR4: 00000000001606f0 [ 35.408332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 35.415574] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 35.422817] Call Trace: [ 35.425382] smc_shutdown+0x3ed/0x540 [ 35.429157] SyS_shutdown+0x137/0x290 [ 35.432932] ? SyS_getsockopt+0x340/0x340 [ 35.437062] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 35.442579] ? do_fast_syscall_32+0x156/0xf9f [ 35.447046] ? SyS_getsockopt+0x340/0x340 [ 35.451166] do_fast_syscall_32+0x3ec/0xf9f [ 35.455465] ? do_int80_syscall_32+0x9c0/0x9c0 [ 35.460020] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 35.464759] ? syscall_return_slowpath+0x550/0x550 [ 35.469664] ? syscall_return_slowpath+0x2ac/0x550 [ 35.474566] ? prepare_exit_to_usermode+0x350/0x350 [ 35.479556] ? sysret32_from_system_call+0x5/0x3c [ 35.484371] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.489191] entry_SYSENTER_compat+0x70/0x7f [ 35.493571] RIP: 0023:0xf7f8dc99 [ 35.496908] RSP: 002b:00000000ff8df1ec EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 35.504588] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 35.511834] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 35.519078] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.526319] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.533562] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 35.540813] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 35.560152] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801cc367c78 [ 35.566871] ---[ end trace 39eb991d6628f21a ]--- [ 35.571640] Kernel panic - not syncing: Fatal exception [ 35.577386] Dumping ftrace buffer: [ 35.580909] (ftrace buffer empty) [ 35.584602] Kernel Offset: disabled [ 35.588202] Rebooting in 86400 seconds..