[....] Starting enhanced syslogd: rsyslogd[ 17.485931] audit: type=1400 audit(1521139131.188:5): avc: denied { syslog } for pid=4072 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.411418] audit: type=1400 audit(1521139136.114:6): avc: denied { map } for pid=4212 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 '10.128.0.49' (ECDSA) to the list of known hosts. executing program [ 28.847958] audit: type=1400 audit(1521139142.550:7): avc: denied { map } for pid=4226 comm="syzkaller074267" path="/root/syzkaller074267111" 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 [ 34.272127] kasan: CONFIG_KASAN_INLINE enabled [ 34.276848] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284242] general protection fault: 0000 [#1] SMP KASAN [ 34.289762] Dumping ftrace buffer: [ 34.293271] (ftrace buffer empty) [ 34.296958] Modules linked in: [ 34.300125] CPU: 1 PID: 4226 Comm: syzkaller074267 Not tainted 4.16.0-rc5+ #264 [ 34.307546] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.316893] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.321962] RSP: 0018:ffff8801b0df7c78 EFLAGS: 00010206 [ 34.327298] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.334536] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341775] RBP: ffff8801b0df7c90 R08: 0000000000000000 R09: 1ffff100361bef0b [ 34.349016] R10: ffff8801b0df7820 R11: 0000000000000001 R12: ffff8801ba08e7d2 [ 34.356261] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0df7d08 [ 34.363505] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000009efa840 [ 34.371700] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.377553] CR2: 00000000026cc778 CR3: 00000001b9496004 CR4: 00000000001606e0 [ 34.384794] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392036] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399277] Call Trace: [ 34.401840] smc_shutdown+0x3ed/0x540 [ 34.405613] SyS_shutdown+0x137/0x290 [ 34.409391] ? SyS_getsockopt+0x340/0x340 [ 34.413516] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419031] ? do_fast_syscall_32+0x156/0xf9f [ 34.423504] ? SyS_getsockopt+0x340/0x340 [ 34.427626] do_fast_syscall_32+0x3ec/0xf9f [ 34.431921] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.436472] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.441198] ? syscall_return_slowpath+0x550/0x550 [ 34.446095] ? syscall_return_slowpath+0x2ac/0x550 [ 34.450994] ? prepare_exit_to_usermode+0x350/0x350 [ 34.455990] ? sysret32_from_system_call+0x5/0x3c [ 34.460807] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.465622] entry_SYSENTER_compat+0x70/0x7f [ 34.469996] RIP: 0023:0xf7fe9c99 [ 34.473332] RSP: 002b:00000000ff80e2cc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.481012] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.488257] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.495495] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.502740] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.509978] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.517226] 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 [ 34.536296] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0df7c78 [ 34.542904] ---[ end trace abde669fc3f60ff0 ]--- [ 34.547657] Kernel panic - not syncing: Fatal exception [ 34.553379] Dumping ftrace buffer: [ 34.556893] (ftrace buffer empty) [ 34.560571] Kernel Offset: disabled [ 34.564165] Rebooting in 86400 seconds..