[....] Starting enhanced syslogd: rsyslogd[ 17.516067] audit: type=1400 audit(1519607353.068:5): avc: denied { syslog } for pid=4121 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: [ 23.161743] audit: type=1400 audit(1519607358.714:6): avc: denied { map } for pid=4260 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 '10.128.15.214' (ECDSA) to the list of known hosts. executing program [ 29.584717] audit: type=1400 audit(1519607365.137:7): avc: denied { map } for pid=4274 comm="syzkaller658156" path="/root/syzkaller658156836" 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 [ 34.784153] kasan: CONFIG_KASAN_INLINE enabled [ 34.788867] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.796247] general protection fault: 0000 [#1] SMP KASAN [ 34.801764] Dumping ftrace buffer: [ 34.805274] (ftrace buffer empty) [ 34.808955] Modules linked in: [ 34.812123] CPU: 0 PID: 4274 Comm: syzkaller658156 Not tainted 4.16.0-rc2+ #329 [ 34.819536] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.829043] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.834115] RSP: 0018:ffff8801b011fcc8 EFLAGS: 00010206 [ 34.839447] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846026f4 [ 34.846688] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.853927] RBP: ffff8801b011fce0 R08: 0000000000000000 R09: 1ffff10036023f15 [ 34.861168] R10: ffff8801b011f870 R11: 0000000000000001 R12: ffff8801b0d907d2 [ 34.868407] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b011fd58 [ 34.875659] FS: 00000000023b6880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.883864] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.889719] CR2: 00000000013a9720 CR3: 00000001b23fa005 CR4: 00000000001606f0 [ 34.896963] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.904204] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.911445] Call Trace: [ 34.914010] smc_shutdown+0x3ed/0x540 [ 34.917789] SyS_shutdown+0x137/0x290 [ 34.921562] ? SyS_getsockopt+0x340/0x340 [ 34.925686] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.931193] ? do_syscall_64+0xb6/0x940 [ 34.935156] ? SyS_getsockopt+0x340/0x340 [ 34.939275] do_syscall_64+0x280/0x940 [ 34.943136] ? __do_page_fault+0xc90/0xc90 [ 34.947341] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.952182] ? syscall_return_slowpath+0x550/0x550 [ 34.957100] ? syscall_return_slowpath+0x2ac/0x550 [ 34.962009] ? prepare_exit_to_usermode+0x350/0x350 [ 34.967001] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.972345] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.977173] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.982332] RIP: 0033:0x43fcb9 [ 34.985492] RSP: 002b:00007ffc7b221f08 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.993170] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 35.000411] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 35.007663] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 35.014901] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 35.022143] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 35.029391] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac e5 10 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 [ 35.048466] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b011fcc8 [ 35.055098] ---[ end trace f5dda0681ad546df ]--- [ 35.059847] Kernel panic - not syncing: Fatal exception [ 35.065567] Dumping ftrace buffer: [ 35.069077] (ftrace buffer empty) [ 35.072757] Kernel Offset: disabled [ 35.076357] Rebooting in 86400 seconds..