Starting mcstransd: 
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[   10.680919] random: sshd: uninitialized urandom read (32 bytes read)
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

[   11.803441] random: crng init done
Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.0.52' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   29.980865] ------------[ cut here ]------------
[   29.981616] kernel BUG at security/keys/keyring.c:1107!
[   29.982354] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[   29.983123] Modules linked in:
[   29.983639] CPU: 0 PID: 2046 Comm: syz-executor174 Not tainted 4.9.141+ #72
[   29.984576] task: ffff8801d2778000 task.stack: ffff8801cedb8000
[   29.985378] RIP: 0010:[<ffffffff819ccf2c>]  [<ffffffff819ccf2c>] __key_link_begin+0x20c/0x2d0
[   29.986656] RSP: 0018:ffff8801cedbfbe0  EFLAGS: 00010293
[   29.987399] RAX: ffff8801d2778000 RBX: ffff8801d532e300 RCX: 1ffff10039db7f71
[   29.988395] RDX: 0000000000000000 RSI: ffffffff819ccf2c RDI: ffff8801cedbfd68
[   29.989353] RBP: ffff8801cedbfc10 R08: ffffffff83c9ec20 R09: 0000000000000001
[   29.990329] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8801cedbfd58
[   29.991293] R13: ffffffff831c1800 R14: ffff8801cedbfd58 R15: ffff8801d532e300
[   29.992252] FS:  0000000002146880(0000) GS:ffff8801db600000(0000) knlGS:0000000000000000
[   29.993437] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   29.994258] CR2: 0000000020caaffb CR3: 00000001cee6a000 CR4: 00000000001606b0
[   29.995355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   29.996331] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   29.997346] Stack:
[   29.997653]  ffff8801cedbfcd8 ffff8801cedbfdf8 ffff8801d532e480 ffffffff831c1800
[   29.998819]  ffff8801cedbfd58 ffff8801d532e300 ffff8801cedbfe20 ffffffff819d6475
[   30.000018]  0000000000000000 0000000000000000 ffff8801d27788a8 ffff8801cedbfcd8
[   30.002692] Call Trace:
[   30.005274]  [<ffffffff819d6475>] request_key_and_link+0x535/0xac0
[   30.011566]  [<ffffffff819d5f40>] ? call_sbin_request_key+0x9d0/0x9d0
[   30.018120]  [<ffffffff8120719b>] ? trace_hardirqs_on_caller+0x38b/0x590
[   30.024950]  [<ffffffff812073ad>] ? trace_hardirqs_on+0xd/0x10
[   30.030897]  [<ffffffff8127c604>] ? current_kernel_time64+0x104/0x120
[   30.037451]  [<ffffffff819d38d1>] ? lookup_user_key+0x221/0xd10
[   30.043485]  [<ffffffff819ca9c0>] ? keyring_alloc+0xb0/0xb0
[   30.049172]  [<ffffffff819cdf93>] SyS_request_key+0x233/0x2f0
[   30.055030]  [<ffffffff819cdd60>] ? SyS_add_key+0x390/0x390
[   30.060717]  [<ffffffff81005598>] ? do_syscall_64+0x48/0x550
[   30.066490]  [<ffffffff819cdd60>] ? SyS_add_key+0x390/0x390
[   30.072176]  [<ffffffff810056ef>] do_syscall_64+0x19f/0x550
[   30.077881]  [<ffffffff82817c13>] entry_SYSCALL_64_after_swapgs+0x5d/0xdb
[   30.084780] Code: 94 ff 48 c7 c7 e0 01 1c 83 e8 91 02 83 ff eb ac e8 4a eb 94 ff 48 c7 c7 e0 01 1c 83 e8 1e 4b e4 00 e9 f3 fe ff ff e8 34 eb 94 ff <0f> 0b e8 2d eb 94 ff 48 8d bb ce 00 00 00 48 b8 00 00 00 00 00 
[   30.111585] RIP  [<ffffffff819ccf2c>] __key_link_begin+0x20c/0x2d0
[   30.118002]  RSP <ffff8801cedbfbe0>
[   30.122033] ---[ end trace 75532f90a1e74a3e ]---
[   30.126863] Kernel panic - not syncing: Fatal exception
[   30.132559] Kernel Offset: disabled
[   30.136169] Rebooting in 86400 seconds..