[....] Starting enhanced syslogd: rsyslogd[ 17.189276] audit: type=1400 audit(1521757573.441:5): avc: denied { syslog } for pid=4096 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: [ 23.580783] audit: type=1400 audit(1521757579.832:6): avc: denied { map } for pid=4235 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 '10.128.0.61' (ECDSA) to the list of known hosts. executing program [ 42.479572] audit: type=1400 audit(1521757598.731:7): avc: denied { map } for pid=4251 comm="syzkaller312723" path="/root/syzkaller312723138" 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 [ 47.583353] kasan: CONFIG_KASAN_INLINE enabled [ 47.588090] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 47.595656] general protection fault: 0000 [#1] SMP KASAN [ 47.601167] Dumping ftrace buffer: [ 47.604680] (ftrace buffer empty) [ 47.608361] Modules linked in: [ 47.611528] CPU: 0 PID: 4251 Comm: syzkaller312723 Not tainted 4.16.0-rc6+ #271 [ 47.618943] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.628276] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 47.633344] RSP: 0018:ffff8801d2fefc78 EFLAGS: 00010206 [ 47.638676] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 47.645918] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 47.653160] RBP: ffff8801d2fefc90 R08: 0000000000000000 R09: 1ffff1003a5fdf0b [ 47.660401] R10: ffff8801d2fef820 R11: 0000000000000001 R12: ffff8801b216f7d2 [ 47.667641] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d2fefd08 [ 47.674882] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008d9a840 [ 47.683084] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 47.688940] CR2: ffffffffff600400 CR3: 00000001b142d002 CR4: 00000000001606f0 [ 47.696181] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.703422] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.710664] Call Trace: [ 47.713228] smc_shutdown+0x3ed/0x540 [ 47.717000] SyS_shutdown+0x137/0x290 [ 47.720770] ? SyS_getsockopt+0x340/0x340 [ 47.724913] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 47.730420] ? do_fast_syscall_32+0x156/0xf9f [ 47.734886] ? SyS_getsockopt+0x340/0x340 [ 47.739007] do_fast_syscall_32+0x3ec/0xf9f [ 47.743306] ? do_int80_syscall_32+0x9c0/0x9c0 [ 47.747861] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 47.752589] ? syscall_return_slowpath+0x550/0x550 [ 47.757488] ? syscall_return_slowpath+0x2ac/0x550 [ 47.762387] ? prepare_exit_to_usermode+0x350/0x350 [ 47.767385] ? sysret32_from_system_call+0x5/0x3c [ 47.772198] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 47.777014] entry_SYSENTER_compat+0x70/0x7f [ 47.781390] RIP: 0023:0xf7f6cc99 [ 47.784725] RSP: 002b:00000000ffdfa2ac EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 47.792400] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 47.799637] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 47.806876] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 47.814120] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 47.821359] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 47.828603] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 47.847667] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d2fefc78 [ 47.854309] ---[ end trace d252b2f3310b3031 ]--- [ 47.859055] Kernel panic - not syncing: Fatal exception [ 47.864779] Dumping ftrace buffer: [ 47.868292] (ftrace buffer empty) [ 47.871975] Kernel Offset: disabled [ 47.875573] Rebooting in 86400 seconds..