[....] Starting enhanced syslogd: rsyslogd[ 16.960614] audit: type=1400 audit(1519871799.485:5): avc: denied { syslog } for pid=4090 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: [ 19.831789] audit: type=1400 audit(1519871802.356:6): avc: denied { map } for pid=4229 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 [ 26.095946] audit: type=1400 audit(1519871808.620:7): avc: denied { map } for pid=4243 comm="syzkaller495721" path="/root/syzkaller495721093" 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 [ 31.200185] kasan: CONFIG_KASAN_INLINE enabled [ 31.204895] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 31.212262] general protection fault: 0000 [#1] SMP KASAN [ 31.217768] Dumping ftrace buffer: [ 31.221277] (ftrace buffer empty) [ 31.224956] Modules linked in: [ 31.228123] CPU: 0 PID: 4243 Comm: syzkaller495721 Not tainted 4.16.0-rc3+ #243 [ 31.235539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 31.244873] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 31.249943] RSP: 0018:ffff8801b11b7c78 EFLAGS: 00010206 [ 31.255276] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845fb6f4 [ 31.262514] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 31.269753] RBP: ffff8801b11b7c90 R08: 0000000000000000 R09: 1ffff10036236f0b [ 31.276993] R10: ffff8801b11b7820 R11: 0000000000000001 R12: ffff8801b25e47d2 [ 31.284231] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b11b7d08 [ 31.291472] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:0000000008306840 [ 31.299664] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 31.305513] CR2: 0000000000fa7018 CR3: 00000001b11bc003 CR4: 00000000001606f0 [ 31.312752] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.319992] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.327230] Call Trace: [ 31.329799] smc_shutdown+0x3ed/0x540 [ 31.333570] SyS_shutdown+0x137/0x290 [ 31.337340] ? SyS_getsockopt+0x340/0x340 [ 31.341464] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 31.346970] ? do_fast_syscall_32+0x156/0xf9f [ 31.351438] ? SyS_getsockopt+0x340/0x340 [ 31.355555] do_fast_syscall_32+0x3ec/0xf9f [ 31.359849] ? do_int80_syscall_32+0x9c0/0x9c0 [ 31.364398] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 31.369125] ? syscall_return_slowpath+0x550/0x550 [ 31.374024] ? syscall_return_slowpath+0x2ac/0x550 [ 31.378921] ? prepare_exit_to_usermode+0x350/0x350 [ 31.383910] ? sysret32_from_system_call+0x5/0x3c [ 31.388721] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 31.393537] entry_SYSENTER_compat+0x70/0x7f [ 31.397913] RIP: 0023:0xf7f17c99 [ 31.401246] RSP: 002b:00000000ff96836c EFLAGS: 00000217 ORIG_RAX: 0000000000000175 [ 31.408922] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000000000 [ 31.416160] RDX: 0000000000000000 RSI: 000000000000016b RDI: 0000000000000003 [ 31.423400] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 31.430637] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 31.437875] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 31.445122] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 4c 3d 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 [ 31.464187] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b11b7c78 [ 31.470839] ---[ end trace b9f1f4338fa43b16 ]--- [ 31.475588] Kernel panic - not syncing: Fatal exception [ 31.481272] Dumping ftrace buffer: [ 31.484784] (ftrace buffer empty) [ 31.488464] Kernel Offset: disabled [ 31.492068] Rebooting in 86400 seconds..