[....] Starting enhanced syslogd: rsyslogd[ 15.798937] audit: type=1400 audit(1521184728.375:5): avc: denied { syslog } for pid=3939 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: [ 18.993463] audit: type=1400 audit(1521184731.570:6): avc: denied { map } for pid=4079 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 '10.128.0.41' (ECDSA) to the list of known hosts. executing program [ 25.335917] audit: type=1400 audit(1521184737.912:7): avc: denied { map } for pid=4093 comm="syzkaller834384" path="/root/syzkaller834384576" 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 [ 30.687117] kasan: CONFIG_KASAN_INLINE enabled [ 30.691810] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.699179] general protection fault: 0000 [#1] SMP KASAN [ 30.704694] Dumping ftrace buffer: [ 30.708202] (ftrace buffer empty) [ 30.711880] Modules linked in: [ 30.715044] CPU: 0 PID: 4093 Comm: syzkaller834384 Not tainted 4.16.0-rc5+ #355 [ 30.722457] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.731788] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.736857] RSP: 0018:ffff8801cbc77cc8 EFLAGS: 00010206 [ 30.742187] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 30.749425] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.756662] RBP: ffff8801cbc77ce0 R08: 0000000000000000 R09: 1ffff1003978ef15 [ 30.763901] R10: ffff8801cbc77870 R11: 0000000000000001 R12: ffff8801cc10a7d2 [ 30.771140] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801cbc77d58 [ 30.778379] FS: 0000000000be9880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 30.786575] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.792423] CR2: 00007f8968c50000 CR3: 00000001ccaf1003 CR4: 00000000001606f0 [ 30.799664] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.806902] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.814138] Call Trace: [ 30.816700] smc_shutdown+0x3ed/0x540 [ 30.820473] SyS_shutdown+0x137/0x290 [ 30.824242] ? SyS_getsockopt+0x340/0x340 [ 30.828364] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.833870] ? do_syscall_64+0xb7/0x940 [ 30.837815] ? SyS_getsockopt+0x340/0x340 [ 30.841932] do_syscall_64+0x281/0x940 [ 30.845814] ? __do_page_fault+0xc90/0xc90 [ 30.850027] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.854753] ? syscall_return_slowpath+0x550/0x550 [ 30.859651] ? syscall_return_slowpath+0x2ac/0x550 [ 30.864563] ? prepare_exit_to_usermode+0x350/0x350 [ 30.869550] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.874886] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.879700] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.884856] RIP: 0033:0x43fcb9 [ 30.888020] RSP: 002b:00007fffadc78348 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.895697] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 30.902935] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.910175] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.917413] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 30.924661] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 30.931907] 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 [ 30.950989] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801cbc77cc8 [ 30.957642] ---[ end trace b7ba9ec401f3e659 ]--- [ 30.962391] Kernel panic - not syncing: Fatal exception [ 30.968145] Dumping ftrace buffer: [ 30.971658] (ftrace buffer empty) [ 30.975337] Kernel Offset: disabled [ 30.978930] Rebooting in 86400 seconds..