[?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. [ 17.852699] audit: type=1400 audit(1521520259.779:6): avc: denied { map } for pid=4225 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 '10.128.0.48' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 24.184656] audit: type=1400 audit(1521520266.111:7): avc: denied { map } for pid=4239 comm="syzkaller084214" path="/root/syzkaller084214726" 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 [ 29.664137] kasan: CONFIG_KASAN_INLINE enabled [ 29.668829] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.676207] general protection fault: 0000 [#1] SMP KASAN [ 29.681723] Dumping ftrace buffer: [ 29.685234] (ftrace buffer empty) [ 29.688914] Modules linked in: [ 29.692076] CPU: 0 PID: 4239 Comm: syzkaller084214 Not tainted 4.16.0-rc6+ #360 [ 29.699487] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.708815] RIP: 0010:kernel_sock_shutdown+0x29/0x70 [ 29.713881] RSP: 0018:ffff8801b07bfcc8 EFLAGS: 00010206 [ 29.719210] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff846006f4 [ 29.726446] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000028 [ 29.733685] RBP: ffff8801b07bfce0 R08: 0000000000000000 R09: 1ffff100360f7f15 [ 29.740922] R10: ffff8801b07bf870 R11: 0000000000000001 R12: ffff8801b01b67d2 [ 29.748160] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801b07bfd58 [ 29.755397] FS: 0000000001ee8880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 29.763590] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.769441] CR2: 00000000010c3f20 CR3: 00000001b0280002 CR4: 00000000001606f0 [ 29.776683] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.783923] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.791158] Call Trace: [ 29.793717] smc_shutdown+0x3ed/0x540 [ 29.797490] SyS_shutdown+0x137/0x290 [ 29.801258] ? SyS_getsockopt+0x340/0x340 [ 29.805378] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 29.810885] ? do_syscall_64+0xb7/0x940 [ 29.814828] ? SyS_getsockopt+0x340/0x340 [ 29.818944] do_syscall_64+0x281/0x940 [ 29.822797] ? __do_page_fault+0xc90/0xc90 [ 29.827003] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 29.831734] ? syscall_return_slowpath+0x550/0x550 [ 29.836629] ? syscall_return_slowpath+0x2ac/0x550 [ 29.841528] ? prepare_exit_to_usermode+0x350/0x350 [ 29.846513] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 29.851847] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.856662] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 29.861819] RIP: 0033:0x43fcb9 [ 29.864979] RSP: 002b:00007fff13ebaca8 EFLAGS: 00000217 ORIG_RAX: 0000000000000030 [ 29.872652] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcb9 [ 29.879888] RDX: 000000000043fcb9 RSI: 0000000000000000 RDI: 0000000000000003 [ 29.887124] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 29.894361] R10: 00000000004002c8 R11: 0000000000000217 R12: 00000000004015e0 [ 29.901597] R13: 0000000000401670 R14: 0000000000000000 R15: 0000000000000000 [ 29.908839] 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 [ 29.927900] RIP: kernel_sock_shutdown+0x29/0x70 RSP: ffff8801b07bfcc8 [ 29.934537] ---[ end trace 723e5c6c3d55c50f ]--- [ 29.939287] Kernel panic - not syncing: Fatal exception [ 29.945038] Dumping ftrace buffer: [ 29.948545] (ftrace buffer empty) [ 29.952224] Kernel Offset: disabled [ 29.955819] Rebooting in 86400 seconds..