[....] Starting enhanced syslogd: rsyslogd[ 16.879342] audit: type=1400 audit(1521139195.381:5): avc: denied { syslog } for pid=4051 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: [ 22.716943] audit: type=1400 audit(1521139201.218:6): avc: denied { map } for pid=4192 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 '10.128.0.38' (ECDSA) to the list of known hosts. executing program [ 29.121669] audit: type=1400 audit(1521139207.623:7): avc: denied { map } for pid=4206 comm="syzkaller520245" path="/root/syzkaller520245797" 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 [ 34.272170] kasan: CONFIG_KASAN_INLINE enabled [ 34.276928] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284612] general protection fault: 0000 [#1] SMP KASAN [ 34.290142] Dumping ftrace buffer: [ 34.293657] (ftrace buffer empty) [ 34.297339] Modules linked in: [ 34.300507] CPU: 0 PID: 4206 Comm: syzkaller520245 Not tainted 4.16.0-rc5+ #354 [ 34.307924] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317262] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322334] RSP: 0018:ffff8801bb4b7cc8 EFLAGS: 00010206 [ 34.327668] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.334911] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.342155] RBP: ffff8801bb4b7ce0 R08: 0000000000000000 R09: 1ffff10037696f15 [ 34.349399] R10: ffff8801bb4b7870 R11: 0000000000000001 R12: ffff8801bc6207d2 [ 34.356640] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801bb4b7d58 [ 34.363894] FS: 00000000010b3880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.372095] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.377953] CR2: 00000000011536c0 CR3: 00000001bc499001 CR4: 00000000001606f0 [ 34.385200] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392447] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399692] Call Trace: [ 34.402265] smc_shutdown+0x3ed/0x540 [ 34.406044] SyS_shutdown+0x137/0x290 [ 34.409818] ? SyS_getsockopt+0x340/0x340 [ 34.413956] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419475] ? do_syscall_64+0xb7/0x940 [ 34.423428] ? SyS_getsockopt+0x340/0x340 [ 34.427552] do_syscall_64+0x281/0x940 [ 34.431416] ? __do_page_fault+0xc90/0xc90 [ 34.435628] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.441144] ? syscall_return_slowpath+0x550/0x550 [ 34.446051] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450965] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.456310] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.461133] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.466301] RIP: 0033:0x43fcb9 [ 34.469476] RSP: 002b:00007ffefeda6f28 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.477156] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 34.484401] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.491659] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 34.498907] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 34.506153] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 34.513406] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 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 [ 34.532501] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801bb4b7cc8 [ 34.539186] ---[ end trace cc5ec1762db0d2c0 ]--- [ 34.543957] Kernel panic - not syncing: Fatal exception [ 34.549781] Dumping ftrace buffer: [ 34.553298] (ftrace buffer empty) [ 34.556983] Kernel Offset: disabled [ 34.560585] Rebooting in 86400 seconds..