[?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. [ 18.505363] audit: type=1400 audit(1520943927.858:6): avc: denied { map } for pid=4224 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 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.816429] audit: type=1400 audit(1520943934.169:7): avc: denied { map } for pid=4238 comm="syzkaller860506" path="/root/syzkaller860506492" 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 [ 30.176149] kasan: CONFIG_KASAN_INLINE enabled [ 30.180871] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.188454] general protection fault: 0000 [#1] SMP KASAN [ 30.193992] Dumping ftrace buffer: [ 30.197524] (ftrace buffer empty) [ 30.201232] Modules linked in: [ 30.204426] CPU: 1 PID: 4238 Comm: syzkaller860506 Not tainted 4.16.0-rc5+ #352 [ 30.211863] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.221320] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 30.226418] RSP: 0018:ffff8801b11bfcc8 EFLAGS: 00010206 [ 30.231769] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff845ff6f4 [ 30.239024] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 30.246270] RBP: ffff8801b11bfce0 R08: 0000000000000000 R09: 1ffff10036237f15 [ 30.253511] R10: ffff8801b11bf870 R11: 0000000000000001 R12: ffff8801b14447d2 [ 30.260752] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b11bfd58 [ 30.267993] FS: 00000000011f4880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 30.276189] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.282039] CR2: 00000000008fa738 CR3: 00000001b16a1006 CR4: 00000000001606e0 [ 30.289286] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.296526] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.303766] Call Trace: [ 30.306331] smc_shutdown+0x3ed/0x540 [ 30.310107] SyS_shutdown+0x137/0x290 [ 30.313881] ? SyS_getsockopt+0x340/0x340 [ 30.318013] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 30.323524] ? do_syscall_64+0xb7/0x940 [ 30.327468] ? SyS_getsockopt+0x340/0x340 [ 30.331614] do_syscall_64+0x281/0x940 [ 30.335475] ? __do_page_fault+0xc90/0xc90 [ 30.339683] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.344413] ? syscall_return_slowpath+0x550/0x550 [ 30.349320] ? syscall_return_slowpath+0x2ac/0x550 [ 30.354233] ? prepare_exit_to_usermode+0x350/0x350 [ 30.359221] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 30.364564] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.369382] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 30.374543] RIP: 0033:0x43fcf9 [ 30.377708] RSP: 002b:00007ffca87c9f48 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 30.385385] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 [ 30.392626] RDX: 000000000043fcf9 RSI: 0000000000000000 RDI: 0000000000000003 [ 30.399867] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 30.407109] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401620 [ 30.414349] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 30.421598] Code: 66 90 55 48 89 e5 41 55 41 54 53 48 89 fb 41 89 f5 e8 ac 20 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 [ 30.440678] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b11bfcc8 [ 30.447332] ---[ end trace fbce6662ab6768e2 ]--- [ 30.452090] Kernel panic - not syncing: Fatal exception [ 30.457841] Dumping ftrace buffer: [ 30.461354] (ftrace buffer empty) [ 30.465036] Kernel Offset: disabled [ 30.468649] Rebooting in 86400 seconds..