[....] Starting enhanced syslogd: rsyslogd[ 17.517557] audit: type=1400 audit(1521500863.891:5): avc: denied { syslog } for pid=4089 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: [ 19.818578] audit: type=1400 audit(1521500866.192:6): avc: denied { map } for pid=4228 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 '10.128.0.40' (ECDSA) to the list of known hosts. executing program [ 32.706530] audit: type=1400 audit(1521500879.080:7): avc: denied { map } for pid=4244 comm="syzkaller960379" path="/root/syzkaller960379948" 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 [ 37.855410] kasan: CONFIG_KASAN_INLINE enabled [ 37.860137] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 37.867528] general protection fault: 0000 [#1] SMP KASAN [ 37.873038] Dumping ftrace buffer: [ 37.876557] (ftrace buffer empty) [ 37.880243] Modules linked in: [ 37.883414] CPU: 1 PID: 4244 Comm: syzkaller960379 Not tainted 4.16.0-rc6+ #269 [ 37.890832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.900166] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 37.905236] RSP: 0018:ffff8801b14efc78 EFLAGS: 00010206 [ 37.910568] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 37.917809] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 37.925053] RBP: ffff8801b14efc90 R08: 0000000000000000 R09: 1ffff1003629df0b [ 37.932295] R10: ffff8801b14ef820 R11: 0000000000000001 R12: ffff8801b194b7d2 [ 37.939538] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b14efd08 [ 37.946783] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009696840 [ 37.954978] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 37.960832] CR2: 0000000001de2e50 CR3: 00000001b1f5d004 CR4: 00000000001606e0 [ 37.968078] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 37.975319] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 37.982561] Call Trace: [ 37.985125] smc_shutdown+0x3ed/0x540 [ 37.988908] SyS_shutdown+0x137/0x290 [ 37.992695] ? SyS_getsockopt+0x340/0x340 [ 37.996819] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 38.002331] ? do_fast_syscall_32+0x156/0xf9f [ 38.006801] ? SyS_getsockopt+0x340/0x340 [ 38.010939] do_fast_syscall_32+0x3ec/0xf9f [ 38.015247] ? do_int80_syscall_32+0x9c0/0x9c0 [ 38.019906] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.024655] ? syscall_return_slowpath+0x550/0x550 [ 38.029574] ? syscall_return_slowpath+0x2ac/0x550 [ 38.034498] ? prepare_exit_to_usermode+0x350/0x350 [ 38.039504] ? sysret32_from_system_call+0x5/0x3c [ 38.044337] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 38.049173] entry_SYSENTER_compat+0x70/0x7f [ 38.053563] RIP: 0023:0xf7f1dc99 [ 38.056903] RSP: 002b:00000000ffb5440c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 38.064602] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 38.071851] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 38.079100] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 38.086352] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 38.093603] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 38.100860] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 2c 21 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 [ 38.119954] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b14efc78 [ 38.126617] ---[ end trace 1985b229578ec1e8 ]--- [ 38.131394] Kernel panic - not syncing: Fatal exception [ 38.137189] Dumping ftrace buffer: [ 38.140756] (ftrace buffer empty) [ 38.144458] Kernel Offset: disabled [ 38.148081] Rebooting in 86400 seconds..