[....] Starting enhanced syslogd: rsyslogd[ 17.122621] audit: type=1400 audit(1521117962.683:5): avc: denied { syslog } for pid=4014 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: [ 23.304949] audit: type=1400 audit(1521117968.865:6): avc: denied { map } for pid=4154 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 '10.128.0.44' (ECDSA) to the list of known hosts. executing program [ 29.756252] audit: type=1400 audit(1521117975.317:7): avc: denied { map } for pid=4168 comm="syzkaller459627" path="/root/syzkaller459627687" 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 [ 34.783153] kasan: CONFIG_KASAN_INLINE enabled [ 34.787870] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.795242] general protection fault: 0000 [#1] SMP KASAN [ 34.800766] Dumping ftrace buffer: [ 34.804465] (ftrace buffer empty) [ 34.808146] Modules linked in: [ 34.811314] CPU: 0 PID: 4168 Comm: syzkaller459627 Not tainted 4.16.0-rc5+ #354 [ 34.818729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.828147] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.833219] RSP: 0018:ffff8801c278fcc8 EFLAGS: 00010206 [ 34.838554] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.845797] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.853038] RBP: ffff8801c278fce0 R08: 0000000000000000 R09: 1ffff100384f1f15 [ 34.860280] R10: ffff8801c278f870 R11: 0000000000000001 R12: ffff8801c43237d2 [ 34.867534] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801c278fd58 [ 34.874781] FS: 0000000000d08880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.882978] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.888830] CR2: ffffffffff600400 CR3: 00000001c43e2006 CR4: 00000000001606f0 [ 34.896089] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.903334] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.910602] Call Trace: [ 34.913166] smc_shutdown+0x3ed/0x540 [ 34.918730] SyS_shutdown+0x137/0x290 [ 34.922512] ? SyS_getsockopt+0x340/0x340 [ 34.926636] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.932143] ? do_syscall_64+0xb7/0x940 [ 34.936089] ? SyS_getsockopt+0x340/0x340 [ 34.940209] do_syscall_64+0x281/0x940 [ 34.944153] ? __do_page_fault+0xc90/0xc90 [ 34.948371] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.953103] ? syscall_return_slowpath+0x550/0x550 [ 34.958008] ? syscall_return_slowpath+0x2ac/0x550 [ 34.962915] ? prepare_exit_to_usermode+0x350/0x350 [ 34.967915] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.973278] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.978099] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.983268] RIP: 0033:0x43fcb9 [ 34.986432] RSP: 002b:00007ffcc1f069b8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.994224] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.001571] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.008820] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.016067] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.023310] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.030566] 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 [ 35.049643] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c278fcc8 [ 35.056285] ---[ end trace 65c2b20a747cc8fa ]--- [ 35.061036] Kernel panic - not syncing: Fatal exception [ 35.066808] Dumping ftrace buffer: [ 35.070325] (ftrace buffer empty) [ 35.074010] Kernel Offset: disabled [ 35.077695] Rebooting in 86400 seconds..