[?25l[?1c7[ ok 8[?25h[?0c.
Starting mcstransd: 
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[   10.678642] random: crng init done
[....] 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

Warning: Permanently added '10.128.0.126' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   27.157857] ------------[ cut here ]------------
[   27.158787] kernel BUG at security/keys/keyring.c:1107!
[   27.159767] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   27.160550] Modules linked in:
[   27.161034] CPU: 0 PID: 2039 Comm: syz-executor631 Not tainted 4.9.131+ #50
[   27.162087] task: ffff8801d18e5f00 task.stack: ffff8801cf1e0000
[   27.163156] RIP: 0010:[<ffffffff819c0d4c>]  [<ffffffff819c0d4c>] __key_link_begin+0x20c/0x2d0
[   27.164779] RSP: 0018:ffff8801cf1e7be0  EFLAGS: 00010293
[   27.165754] RAX: ffff8801d18e5f00 RBX: ffff8801d533e300 RCX: 1ffff10039e3cf71
[   27.166774] RDX: 0000000000000000 RSI: ffffffff819c0d4c RDI: ffff8801cf1e7d68
[   27.167899] RBP: ffff8801cf1e7c10 R08: ffffffff83c9ec20 R09: 0000000000000001
[   27.169090] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801cf1e7d58
[   27.170135] R13: ffffffff831c0c20 R14: ffff8801cf1e7d58 R15: ffff8801d533e300
[   27.171276] FS:  0000000000a4c880(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
[   27.172527] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   27.173402] CR2: 0000000020caaffb CR3: 00000001d1308000 CR4: 00000000001606b0
[   27.174587] Stack:
[   27.174900]  ffff8801cf1e7cd8 ffff8801cf1e7df8 ffff8801d533e480 ffffffff831c0c20
[   27.176518]  ffff8801cf1e7d58 ffff8801d533e300 ffff8801cf1e7e20 ffffffff819ca295
[   27.177830]  0000000000000000 0000000000000000 ffff8801d18e67a8 ffff8801cf1e7cd8
[   27.185408] Call Trace:
[   27.187969]  [<ffffffff819ca295>] request_key_and_link+0x535/0xac0
[   27.194293]  [<ffffffff819c9d60>] ? call_sbin_request_key+0x9d0/0x9d0
[   27.200877]  [<ffffffff81206f6b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   27.207694]  [<ffffffff8120717d>] ? trace_hardirqs_on+0xd/0x10
[   27.213645]  [<ffffffff8127c174>] ? current_kernel_time64+0x104/0x120
[   27.220203]  [<ffffffff819c76f1>] ? lookup_user_key+0x221/0xd10
[   27.226240]  [<ffffffff819be7e0>] ? keyring_alloc+0xb0/0xb0
[   27.231924]  [<ffffffff819c1db3>] SyS_request_key+0x233/0x2f0
[   27.237779]  [<ffffffff819c1b80>] ? SyS_add_key+0x390/0x390
[   27.243463]  [<ffffffff81005598>] ? do_syscall_64+0x48/0x550
[   27.249237]  [<ffffffff819c1b80>] ? SyS_add_key+0x390/0x390
[   27.254932]  [<ffffffff810056ef>] do_syscall_64+0x19f/0x550
[   27.260621]  [<ffffffff828037d3>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   27.267520] Code: 95 ff 48 c7 c7 00 f6 1b 83 e8 41 c2 83 ff eb ac e8 2a a8 95 ff 48 c7 c7 00 f6 1b 83 e8 be c8 e3 00 e9 f3 fe ff ff e8 14 a8 95 ff <0f> 0b e8 0d a8 95 ff 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 
[   27.294638] RIP  [<ffffffff819c0d4c>] __key_link_begin+0x20c/0x2d0
[   27.301054]  RSP <ffff8801cf1e7be0>
[   27.304961] ---[ end trace 5a915618df1445dd ]---
[   27.309733] Kernel panic - not syncing: Fatal exception
[   27.315420] Kernel Offset: disabled
[   27.319039] Rebooting in 86400 seconds..