[....] Starting enhanced syslogd: rsyslogd[ 16.786286] audit: type=1400 audit(1519879175.319:5): avc: denied { syslog } for pid=4101 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: [ 22.216274] audit: type=1400 audit(1519879180.750:6): avc: denied { map } for pid=4240 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 '10.128.0.39' (ECDSA) to the list of known hosts. executing program [ 37.613152] audit: type=1400 audit(1519879196.146:7): avc: denied { map } for pid=4256 comm="syzkaller399888" path="/root/syzkaller399888650" 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 [ 42.975565] kasan: CONFIG_KASAN_INLINE enabled [ 42.980321] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.987731] general protection fault: 0000 [#1] SMP KASAN [ 42.993244] Dumping ftrace buffer: [ 42.996758] (ftrace buffer empty) [ 43.000440] Modules linked in: [ 43.003609] CPU: 1 PID: 4256 Comm: syzkaller399888 Not tainted 4.16.0-rc3+ #243 [ 43.011024] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.020357] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 43.025428] RSP: 0018:ffff8801b0947c78 EFLAGS: 00010206 [ 43.030760] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 43.038001] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 43.045243] RBP: ffff8801b0947c90 R08: 0000000000000000 R09: 1ffff10036128f0b [ 43.052496] R10: ffff8801b0947820 R11: 0000000000000001 R12: ffff8801b17d87d2 [ 43.059738] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0947d08 [ 43.066994] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000098c0840 [ 43.075189] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 43.081040] CR2: 000055a526c5f110 CR3: 00000001b148b006 CR4: 00000000001606e0 [ 43.088284] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.095528] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.102770] Call Trace: [ 43.105334] smc_shutdown+0x3ed/0x540 [ 43.109108] SyS_shutdown+0x137/0x290 [ 43.112880] ? SyS_getsockopt+0x340/0x340 [ 43.117001] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 43.122510] ? do_fast_syscall_32+0x156/0xf9f [ 43.126978] ? SyS_getsockopt+0x340/0x340 [ 43.131097] do_fast_syscall_32+0x3ec/0xf9f [ 43.135390] ? do_int80_syscall_32+0x9c0/0x9c0 [ 43.139942] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 43.144670] ? syscall_return_slowpath+0x550/0x550 [ 43.149570] ? syscall_return_slowpath+0x2ac/0x550 [ 43.154471] ? prepare_exit_to_usermode+0x350/0x350 [ 43.159459] ? sysret32_from_system_call+0x5/0x3c [ 43.164273] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 43.169089] entry_SYSENTER_compat+0x70/0x7f [ 43.173468] RIP: 0023:0xf7f53c99 [ 43.176802] RSP: 002b:00000000ffa0cf1c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 43.184480] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 43.191723] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 43.198962] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 43.206208] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 43.213450] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 43.220699] 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 [ 43.239778] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0947c78 [ 43.246725] ---[ end trace 08338477fedd4d0e ]--- [ 43.251472] Kernel panic - not syncing: Fatal exception [ 43.257181] Dumping ftrace buffer: [ 43.260695] (ftrace buffer empty) [ 43.264379] Kernel Offset: disabled [ 43.267980] Rebooting in 86400 seconds..