[....] Starting enhanced syslogd: rsyslogd[ 16.595293] audit: type=1400 audit(1521261714.880:5): avc: denied { syslog } for pid=4052 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: [ 22.172898] audit: type=1400 audit(1521261720.458:6): avc: denied { map } for pid=4190 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 '10.128.0.46' (ECDSA) to the list of known hosts. executing program [ 28.539467] audit: type=1400 audit(1521261726.825:7): avc: denied { map } for pid=4204 comm="syzkaller084433" path="/root/syzkaller084433703" 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 [ 33.759234] kasan: CONFIG_KASAN_INLINE enabled [ 33.764148] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.771571] general protection fault: 0000 [#1] SMP KASAN [ 33.777099] Dumping ftrace buffer: [ 33.780612] (ftrace buffer empty) [ 33.784294] Modules linked in: [ 33.787460] CPU: 1 PID: 4204 Comm: syzkaller084433 Not tainted 4.16.0-rc5+ #267 [ 33.794878] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804215] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809291] RSP: 0018:ffff8801b7257c78 EFLAGS: 00010206 [ 33.814625] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 33.821865] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829113] RBP: ffff8801b7257c90 R08: 0000000000000000 R09: 1ffff10036e4af0b [ 33.836367] R10: ffff8801b7257820 R11: 0000000000000001 R12: ffff8801b81967d2 [ 33.843627] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b7257d08 [ 33.850870] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000086df840 [ 33.859066] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.864918] CR2: ffffffffff600400 CR3: 00000001b7512006 CR4: 00000000001606e0 [ 33.872165] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.879410] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.886658] Call Trace: [ 33.889235] smc_shutdown+0x3ed/0x540 [ 33.893027] SyS_shutdown+0x137/0x290 [ 33.896821] ? SyS_getsockopt+0x340/0x340 [ 33.900952] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.906461] ? do_fast_syscall_32+0x156/0xf9f [ 33.910931] ? SyS_getsockopt+0x340/0x340 [ 33.915059] do_fast_syscall_32+0x3ec/0xf9f [ 33.919363] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.923920] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.928652] ? syscall_return_slowpath+0x550/0x550 [ 33.933562] ? syscall_return_slowpath+0x2ac/0x550 [ 33.938483] ? prepare_exit_to_usermode+0x350/0x350 [ 33.943491] ? sysret32_from_system_call+0x5/0x3c [ 33.948321] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.953159] entry_SYSENTER_compat+0x70/0x7f [ 33.957552] RIP: 0023:0xf7f53c99 [ 33.960890] RSP: 002b:00000000ffc4e5cc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.968575] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.975820] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.983063] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.990308] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.997565] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.004818] 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 [ 34.023897] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b7257c78 [ 34.030530] ---[ end trace 6c5c9480ea2016ad ]--- [ 34.035306] Kernel panic - not syncing: Fatal exception [ 34.041116] Dumping ftrace buffer: [ 34.044630] (ftrace buffer empty) [ 34.048310] Kernel Offset: disabled [ 34.051909] Rebooting in 86400 seconds..