[....] Starting enhanced syslogd: rsyslogd[ 14.995834] audit: type=1400 audit(1521445756.388:5): avc: denied { syslog } for pid=4004 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: [ 18.084767] audit: type=1400 audit(1521445759.477:6): avc: denied { map } for pid=4142 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 '10.128.0.32' (ECDSA) to the list of known hosts. executing program [ 24.389452] audit: type=1400 audit(1521445765.782:7): avc: denied { map } for pid=4156 comm="syzkaller525626" path="/root/syzkaller525626302" 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 [ 29.663131] kasan: CONFIG_KASAN_INLINE enabled [ 29.667925] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.675352] general protection fault: 0000 [#1] SMP KASAN [ 29.680873] Dumping ftrace buffer: [ 29.684384] (ftrace buffer empty) [ 29.688065] Modules linked in: [ 29.691230] CPU: 1 PID: 4156 Comm: syzkaller525626 Not tainted 4.16.0-rc5+ #268 [ 29.698649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.708000] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.713082] RSP: 0018:ffff8801be53fc78 EFLAGS: 00010206 [ 29.718415] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 29.725666] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.732914] RBP: ffff8801be53fc90 R08: 0000000000000000 R09: 1ffff10037ca7f0b [ 29.740163] R10: ffff8801be53f820 R11: 0000000000000001 R12: ffff8801c02757d2 [ 29.747421] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801be53fd08 [ 29.754664] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:0000000008191840 [ 29.762859] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.768710] CR2: 00000000017c5970 CR3: 00000001bebeb004 CR4: 00000000001606e0 [ 29.775952] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.783193] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.790432] Call Trace: [ 29.792998] smc_shutdown+0x3ed/0x540 [ 29.796779] SyS_shutdown+0x137/0x290 [ 29.800549] ? SyS_getsockopt+0x340/0x340 [ 29.804670] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.810175] ? do_fast_syscall_32+0x156/0xf9f [ 29.814641] ? SyS_getsockopt+0x340/0x340 [ 29.818761] do_fast_syscall_32+0x3ec/0xf9f [ 29.823064] ? do_int80_syscall_32+0x9c0/0x9c0 [ 29.827621] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.832348] ? syscall_return_slowpath+0x550/0x550 [ 29.837245] ? syscall_return_slowpath+0x2ac/0x550 [ 29.842153] ? prepare_exit_to_usermode+0x350/0x350 [ 29.847153] ? sysret32_from_system_call+0x5/0x3c [ 29.851968] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.856787] entry_SYSENTER_compat+0x70/0x7f [ 29.861163] RIP: 0023:0xf7fe4c99 [ 29.864497] RSP: 002b:00000000ffadb9bc EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 29.872175] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 29.879412] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 29.886669] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 29.893911] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 29.901152] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.908402] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 2c 21 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 [ 29.927494] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801be53fc78 [ 29.934111] ---[ end trace b5cdc3ad8a9120ba ]--- [ 29.938881] Kernel panic - not syncing: Fatal exception [ 29.944811] Dumping ftrace buffer: [ 29.948337] (ftrace buffer empty) [ 29.952022] Kernel Offset: disabled [ 29.955623] Rebooting in 86400 seconds..