[....] Starting enhanced syslogd: rsyslogd[ 17.284257] audit: type=1400 audit(1521448573.861:5): avc: denied { syslog } for pid=4099 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: [ 22.724587] audit: type=1400 audit(1521448579.301:6): avc: denied { map } for pid=4240 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 '10.128.0.35' (ECDSA) to the list of known hosts. executing program [ 29.067597] audit: type=1400 audit(1521448585.644:7): avc: denied { map } for pid=4254 comm="syzkaller485130" path="/root/syzkaller485130593" 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 [ 34.272171] kasan: CONFIG_KASAN_INLINE enabled [ 34.276894] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 34.284281] general protection fault: 0000 [#1] SMP KASAN [ 34.289790] Dumping ftrace buffer: [ 34.293302] (ftrace buffer empty) [ 34.296986] Modules linked in: [ 34.300157] CPU: 0 PID: 4254 Comm: syzkaller485130 Not tainted 4.16.0-rc5+ #358 [ 34.307571] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.316905] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 34.321975] RSP: 0018:ffff8801b0987cc8 EFLAGS: 00010206 [ 34.327306] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 34.334558] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 34.341816] RBP: ffff8801b0987ce0 R08: 0000000000000000 R09: 1ffff10036130f15 [ 34.349061] R10: ffff8801b0987870 R11: 0000000000000001 R12: ffff8801b13947d2 [ 34.356306] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b0987d58 [ 34.363548] FS: 00000000012cc880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 34.371744] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.377595] CR2: ffffffffff600400 CR3: 00000001a8a06005 CR4: 00000000001606f0 [ 34.384837] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.392080] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.399319] Call Trace: [ 34.401885] smc_shutdown+0x3ed/0x540 [ 34.405676] SyS_shutdown+0x137/0x290 [ 34.409451] ? SyS_getsockopt+0x340/0x340 [ 34.413576] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 34.419086] ? do_syscall_64+0xb7/0x940 [ 34.423031] ? SyS_getsockopt+0x340/0x340 [ 34.427151] do_syscall_64+0x281/0x940 [ 34.431010] ? __do_page_fault+0xc90/0xc90 [ 34.435213] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 34.439939] ? syscall_return_slowpath+0x550/0x550 [ 34.444839] ? syscall_return_slowpath+0x2ac/0x550 [ 34.449739] ? prepare_exit_to_usermode+0x350/0x350 [ 34.454727] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 34.460063] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.464879] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 34.470039] RIP: 0033:0x43fcb9 [ 34.473198] RSP: 002b:00007ffc677dae28 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 34.480875] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 34.488127] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 34.495366] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 34.502606] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 34.509857] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 34.517106] 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 [ 34.536178] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b0987cc8 [ 34.542923] ---[ end trace 9472aab9893d1d66 ]--- [ 34.547693] Kernel panic - not syncing: Fatal exception [ 34.553524] Dumping ftrace buffer: [ 34.557036] (ftrace buffer empty) [ 34.560717] Kernel Offset: disabled [ 34.564319] Rebooting in 86400 seconds..