[....] Starting enhanced syslogd: rsyslogd[ 15.758496] audit: type=1400 audit(1521216752.530:5): avc: denied { syslog } for pid=4041 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: [ 19.887933] audit: type=1400 audit(1521216756.659:6): avc: denied { map } for pid=4181 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 '10.128.0.58' (ECDSA) to the list of known hosts. executing program [ 28.470342] audit: type=1400 audit(1521216765.242:7): avc: denied { map } for pid=4196 comm="syzkaller584512" path="/root/syzkaller584512012" 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 [ 33.760179] kasan: CONFIG_KASAN_INLINE enabled [ 33.764886] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.772265] general protection fault: 0000 [#1] SMP KASAN [ 33.777784] Dumping ftrace buffer: [ 33.781299] (ftrace buffer empty) [ 33.784988] Modules linked in: [ 33.788155] CPU: 0 PID: 4196 Comm: syzkaller584512 Not tainted 4.16.0-rc5+ #266 [ 33.795565] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.804895] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 33.809966] RSP: 0018:ffff8801c9c9fc78 EFLAGS: 00010206 [ 33.815299] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 33.822536] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 33.829776] RBP: ffff8801c9c9fc90 R08: 0000000000000000 R09: 1ffff10039393f0b [ 33.837017] R10: ffff8801c9c9f820 R11: 0000000000000001 R12: ffff8801b84bd7d2 [ 33.844273] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801c9c9fd08 [ 33.851512] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000009357840 [ 33.859708] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 33.865559] CR2: 0000000000bcc150 CR3: 00000001b848e001 CR4: 00000000001606f0 [ 33.872798] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.880044] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.887284] Call Trace: [ 33.889848] smc_shutdown+0x3ed/0x540 [ 33.893619] SyS_shutdown+0x137/0x290 [ 33.897391] ? SyS_getsockopt+0x340/0x340 [ 33.901516] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 33.907032] ? do_fast_syscall_32+0x156/0xf9f [ 33.911504] ? SyS_getsockopt+0x340/0x340 [ 33.915622] do_fast_syscall_32+0x3ec/0xf9f [ 33.919931] ? do_int80_syscall_32+0x9c0/0x9c0 [ 33.924483] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 33.929215] ? syscall_return_slowpath+0x550/0x550 [ 33.934112] ? syscall_return_slowpath+0x2ac/0x550 [ 33.939013] ? prepare_exit_to_usermode+0x350/0x350 [ 33.944010] ? sysret32_from_system_call+0x5/0x3c [ 33.948827] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 33.953727] entry_SYSENTER_compat+0x70/0x7f [ 33.958105] RIP: 0023:0xf7fddc99 [ 33.961438] RSP: 002b:00000000ffc4960c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 33.969120] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 33.976359] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 33.983596] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 33.990835] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 33.998072] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.005317] 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 [ 34.024392] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801c9c9fc78 [ 34.031045] ---[ end trace 77fd1340b06fcc0a ]--- [ 34.035795] Kernel panic - not syncing: Fatal exception [ 34.041504] Dumping ftrace buffer: [ 34.045018] (ftrace buffer empty) [ 34.048697] Kernel Offset: disabled [ 34.052295] Rebooting in 86400 seconds..