[....] Starting enhanced syslogd: rsyslogd[ 17.791218] audit: type=1400 audit(1520974123.006:5): avc: denied { syslog } for pid=4095 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: [ 23.042131] audit: type=1400 audit(1520974128.256:6): avc: denied { map } for pid=4236 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 [ 29.358006] audit: type=1400 audit(1520974134.572:7): avc: denied { map } for pid=4250 comm="syzkaller768752" path="/root/syzkaller768752542" 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 [ 34.784123] kasan: CONFIG_KASAN_INLINE enabled [ 34.788896] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.796556] general protection fault: 0000 [#1] SMP KASAN [ 34.802084] Dumping ftrace buffer: [ 34.805594] (ftrace buffer empty) [ 34.809275] Modules linked in: [ 34.812445] CPU: 0 PID: 4250 Comm: syzkaller768752 Not tainted 4.16.0-rc5+ #352 [ 34.819856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.829183] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.834252] RSP: 0018:ffff8801af847cc8 EFLAGS: 00010206 [ 34.839583] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.846821] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.854058] RBP: ffff8801af847ce0 R08: 0000000000000000 R09: 1ffff10035f08f15 [ 34.861297] R10: ffff8801af847870 R11: 0000000000000001 R12: ffff8801b36dc7d2 [ 34.868536] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801af847d58 [ 34.875778] FS: 0000000000894880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.883971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.889829] CR2: 00000000020e0688 CR3: 00000001b00fb004 CR4: 00000000001606f0 [ 34.897070] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.904308] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.911546] Call Trace: [ 34.914106] smc_shutdown+0x3ed/0x540 [ 34.917878] SyS_shutdown+0x137/0x290 [ 34.921657] ? SyS_getsockopt+0x340/0x340 [ 34.925776] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.931284] ? do_syscall_64+0xb7/0x940 [ 34.935229] ? SyS_getsockopt+0x340/0x340 [ 34.939347] do_syscall_64+0x281/0x940 [ 34.943205] ? __do_page_fault+0xc90/0xc90 [ 34.947409] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.952136] ? syscall_return_slowpath+0x550/0x550 [ 34.957035] ? syscall_return_slowpath+0x2ac/0x550 [ 34.961934] ? prepare_exit_to_usermode+0x350/0x350 [ 34.966921] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.972256] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.977075] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.982233] RIP: 0033:0x43fcb9 [ 34.985392] RSP: 002b:00007ffe90ab1b98 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.993067] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.000306] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.007553] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.014793] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.022032] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.029290] 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 [ 35.048359] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801af847cc8 [ 35.054989] ---[ end trace c50fa8d9bb24d7d0 ]--- [ 35.059742] Kernel panic - not syncing: Fatal exception [ 35.065484] Dumping ftrace buffer: [ 35.069000] (ftrace buffer empty) [ 35.072678] Kernel Offset: disabled [ 35.076272] Rebooting in 86400 seconds..