[....] Starting enhanced syslogd: rsyslogd[ 14.842967] audit: type=1400 audit(1521217243.231:5): avc: denied { syslog } for pid=4064 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: [ 19.573295] audit: type=1400 audit(1521217247.961:6): avc: denied { map } for pid=4205 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 '10.128.0.4' (ECDSA) to the list of known hosts. executing program [ 33.956601] audit: type=1400 audit(1521217262.345:7): avc: denied { map } for pid=4221 comm="syzkaller741932" path="/root/syzkaller741932192" 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 [ 39.392148] kasan: CONFIG_KASAN_INLINE enabled [ 39.396868] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.404244] general protection fault: 0000 [#1] SMP KASAN [ 39.409758] Dumping ftrace buffer: [ 39.413269] (ftrace buffer empty) [ 39.416949] Modules linked in: [ 39.420117] CPU: 0 PID: 4221 Comm: syzkaller741932 Not tainted 4.16.0-rc5+ #356 [ 39.427529] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.436861] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 39.441928] RSP: 0018:ffff8801b4f27cc8 EFLAGS: 00010206 [ 39.447258] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 39.454496] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 39.461735] RBP: ffff8801b4f27ce0 R08: 0000000000000000 R09: 1ffff100369e4f15 [ 39.468974] R10: ffff8801b4f27870 R11: 0000000000000001 R12: ffff8801bace87d2 [ 39.476213] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b4f27d58 [ 39.483455] FS: 0000000000e24880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 39.491649] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.497501] CR2: ffffffffff600400 CR3: 00000001b5457005 CR4: 00000000001606f0 [ 39.504743] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.511983] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.519230] Call Trace: [ 39.521789] smc_shutdown+0x3ed/0x540 [ 39.525560] SyS_shutdown+0x137/0x290 [ 39.529329] ? SyS_getsockopt+0x340/0x340 [ 39.533455] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 39.538962] ? do_syscall_64+0xb7/0x940 [ 39.542908] ? SyS_getsockopt+0x340/0x340 [ 39.547030] do_syscall_64+0x281/0x940 [ 39.550886] ? __do_page_fault+0xc90/0xc90 [ 39.555176] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.559904] ? syscall_return_slowpath+0x550/0x550 [ 39.564802] ? syscall_return_slowpath+0x2ac/0x550 [ 39.569700] ? prepare_exit_to_usermode+0x350/0x350 [ 39.574689] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 39.580028] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.584842] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 39.589999] RIP: 0033:0x43fcb9 [ 39.593165] RSP: 002b:00007ffc3b4365c8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 39.600839] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 39.608085] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 39.615323] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 39.622562] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 39.629799] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 39.637054] 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 [ 39.656119] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b4f27cc8 [ 39.662765] ---[ end trace 58dbc66ab7468668 ]--- [ 39.667515] Kernel panic - not syncing: Fatal exception [ 39.673270] Dumping ftrace buffer: [ 39.676783] (ftrace buffer empty) [ 39.680466] Kernel Offset: disabled [ 39.684069] Rebooting in 86400 seconds..