[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 19.688920] audit: type=1400 audit(1521527098.091:6): avc: denied { map } for pid=4221 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 [ 22.702856] audit: type=1400 audit(1521527101.105:7): avc: denied { map } for pid=4230 comm="sh" path="/bin/dash" dev="sda1" ino=1473 scontext=system_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 [ 44.952058] audit: type=1400 audit(1521527123.354:8): avc: denied { map } for pid=4569 comm="syzkaller111955" path="/root/syzkaller111955299" 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 [ 50.143398] kasan: CONFIG_KASAN_INLINE enabled [ 50.148106] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 50.155485] general protection fault: 0000 [#1] SMP KASAN [ 50.160992] Dumping ftrace buffer: [ 50.164498] (ftrace buffer empty) [ 50.168179] Modules linked in: [ 50.171353] CPU: 0 PID: 4569 Comm: syzkaller111955 Not tainted 4.16.0-rc6+ #360 [ 50.178763] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.188094] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 50.193163] RSP: 0018:ffff8801d8b2fcc8 EFLAGS: 00010206 [ 50.198494] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 50.205731] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 50.212971] RBP: ffff8801d8b2fce0 R08: 0000000000000000 R09: 1ffff1003b165f15 [ 50.220209] R10: ffff8801d8b2f870 R11: 0000000000000001 R12: ffff8801ac20c7d2 [ 50.227458] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d8b2fd58 [ 50.234698] FS: 0000000001e8b880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 50.242892] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.248741] CR2: ffffffffff600400 CR3: 00000001cf22a004 CR4: 00000000001606f0 [ 50.255980] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.263219] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.270464] Call Trace: [ 50.273026] smc_shutdown+0x3ed/0x540 [ 50.276799] SyS_shutdown+0x137/0x290 [ 50.280566] ? SyS_getsockopt+0x340/0x340 [ 50.284685] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 50.290190] ? do_syscall_64+0xb7/0x940 [ 50.294135] ? SyS_getsockopt+0x340/0x340 [ 50.298253] do_syscall_64+0x281/0x940 [ 50.302109] ? __do_page_fault+0xc90/0xc90 [ 50.306311] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 50.311045] ? syscall_return_slowpath+0x550/0x550 [ 50.315943] ? syscall_return_slowpath+0x2ac/0x550 [ 50.320841] ? prepare_exit_to_usermode+0x350/0x350 [ 50.325827] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 50.331163] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 50.335975] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 50.341130] RIP: 0033:0x43fcb9 [ 50.344290] RSP: 002b:00007ffe9fad5ee8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 50.351965] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 50.359205] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 50.366442] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 50.373679] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 50.380919] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 50.388162] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 0c 12 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 [ 50.407224] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801d8b2fcc8 [ 50.413841] ---[ end trace 1e968b45a4fc0024 ]--- [ 50.418582] Kernel panic - not syncing: Fatal exception [ 50.424332] Dumping ftrace buffer: [ 50.427838] (ftrace buffer empty) [ 50.431517] Kernel Offset: disabled [ 50.435119] Rebooting in 86400 seconds..