[....] Starting enhanced syslogd: rsyslogd[ 18.184239] audit: type=1400 audit(1521827205.494:5): avc: denied { syslog } for pid=4123 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: [ 23.255131] audit: type=1400 audit(1521827210.564:6): avc: denied { map } for pid=4263 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 '10.128.0.45' (ECDSA) to the list of known hosts. executing program [ 29.615268] audit: type=1400 audit(1521827216.925:7): avc: denied { map } for pid=4277 comm="syzkaller292313" path="/root/syzkaller292313320" 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 [ 29.618838] kasan: CONFIG_KASAN_INLINE enabled [ 29.645994] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.653378] general protection fault: 0000 [#1] SMP KASAN [ 29.658904] Dumping ftrace buffer: [ 29.662418] (ftrace buffer empty) [ 29.666097] Modules linked in: [ 29.669261] CPU: 0 PID: 4277 Comm: syzkaller292313 Not tainted 4.16.0-rc6+ #273 [ 29.676677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.686011] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.691091] RSP: 0018:ffff8801af60fc78 EFLAGS: 00010206 [ 29.696440] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846016f4 [ 29.703679] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.710929] RBP: ffff8801af60fc90 R08: 0000000000000000 R09: 1ffff10035ec1f29 [ 29.718167] R10: ffff8801af60f910 R11: 0000000000000001 R12: ffff8801b0fb87d2 [ 29.725407] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801af60fd08 [ 29.732648] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000086af840 [ 29.740842] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.746692] CR2: 0000559385cf3100 CR3: 00000001b086a002 CR4: 00000000001606f0 [ 29.753935] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.761174] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.768413] Call Trace: [ 29.770977] smc_shutdown+0x3ed/0x540 [ 29.774752] SyS_shutdown+0x137/0x290 [ 29.778524] ? SyS_getsockopt+0x340/0x340 [ 29.782647] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.788167] ? do_fast_syscall_32+0x156/0xf9f [ 29.792637] ? SyS_getsockopt+0x340/0x340 [ 29.796757] do_fast_syscall_32+0x3ec/0xf9f [ 29.801054] ? do_int80_syscall_32+0x9c0/0x9c0 [ 29.805605] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.810334] ? syscall_return_slowpath+0x550/0x550 [ 29.815232] ? syscall_return_slowpath+0x2ac/0x550 [ 29.820129] ? prepare_exit_to_usermode+0x350/0x350 [ 29.825123] ? sysret32_from_system_call+0x5/0x3c [ 29.829935] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.834751] entry_SYSENTER_compat+0x70/0x7f [ 29.839130] RIP: 0023:0xf7f05c99 [ 29.842463] RSP: 002b:00000000ff97cbac EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 29.850142] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 29.857383] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 29.864623] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 29.871862] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 29.879107] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.886359] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 7c 05 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 [ 29.905431] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801af60fc78 [ 29.912199] ---[ end trace bdaf92ce6e292b57 ]--- [ 29.916958] Kernel panic - not syncing: Fatal exception [ 29.922763] Dumping ftrace buffer: [ 29.926282] (ftrace buffer empty) [ 29.929961] Kernel Offset: disabled [ 29.933559] Rebooting in 86400 seconds..