[....] Starting enhanced syslogd: rsyslogd[ 18.103352] audit: type=1400 audit(1520375532.609:5): avc: denied { syslog } for pid=4079 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: [ 22.766800] audit: type=1400 audit(1520375537.273:6): avc: denied { map } for pid=4218 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 '10.128.10.3' (ECDSA) to the list of known hosts. executing program [ 29.159409] audit: type=1400 audit(1520375543.665:7): avc: denied { map } for pid=4233 comm="syzkaller856931" path="/root/syzkaller856931393" 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 [ 34.272158] kasan: CONFIG_KASAN_INLINE enabled [ 34.276954] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284579] general protection fault: 0000 [#1] SMP KASAN [ 34.290099] Dumping ftrace buffer: [ 34.293618] (ftrace buffer empty) [ 34.297308] Modules linked in: [ 34.300483] CPU: 0 PID: 4233 Comm: syzkaller856931 Not tainted 4.16.0-rc4+ #253 [ 34.307905] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.317334] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.322411] RSP: 0018:ffff8801b8f8fc78 EFLAGS: 00010206 [ 34.327753] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fd6f4 [ 34.335001] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.342249] RBP: ffff8801b8f8fc90 R08: 0000000000000000 R09: 1ffff100371f1f0b [ 34.349496] R10: ffff8801b8f8f820 R11: 0000000000000001 R12: ffff8801bd8fd7d2 [ 34.356742] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b8f8fd08 [ 34.363990] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000092c4840 [ 34.372208] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 34.378076] CR2: 00007fb366d12000 CR3: 00000001bae53002 CR4: 00000000001606f0 [ 34.385339] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392599] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399858] Call Trace: [ 34.402432] smc_shutdown+0x3ed/0x540 [ 34.406214] SyS_shutdown+0x137/0x290 [ 34.409994] ? SyS_getsockopt+0x340/0x340 [ 34.414140] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419656] ? do_fast_syscall_32+0x156/0xf9f [ 34.424130] ? SyS_getsockopt+0x340/0x340 [ 34.428255] do_fast_syscall_32+0x3ec/0xf9f [ 34.432558] ? do_int80_syscall_32+0x9c0/0x9c0 [ 34.437120] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.441858] ? syscall_return_slowpath+0x550/0x550 [ 34.446768] ? syscall_return_slowpath+0x2ac/0x550 [ 34.451674] ? prepare_exit_to_usermode+0x350/0x350 [ 34.456671] ? sysret32_from_system_call+0x5/0x3c [ 34.461494] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.466320] entry_SYSENTER_compat+0x70/0x7f [ 34.470704] RIP: 0023:0xf7f18c99 [ 34.474043] RSP: 002b:00000000fff9cb4c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 34.481729] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 34.488979] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 34.496230] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 34.503478] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 34.510727] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 34.517985] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 3c 2f 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 [ 34.537084] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b8f8fc78 [ 34.543745] ---[ end trace 0ceca7c2d6442289 ]--- [ 34.548505] Kernel panic - not syncing: Fatal exception [ 34.554259] Dumping ftrace buffer: [ 34.557781] (ftrace buffer empty) [ 34.561473] Kernel Offset: disabled [ 34.565078] Rebooting in 86400 seconds..