[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   34.430263] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   37.759383] random: sshd: uninitialized urandom read (32 bytes read)
[   38.246371] random: sshd: uninitialized urandom read (32 bytes read)
[   40.124618] random: sshd: uninitialized urandom read (32 bytes read)
[   40.364639] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
[   45.819207] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   45.940803] IPVS: ftp: loaded support on port[0] = 21
[   45.982556] WARNING: CPU: 0 PID: 4604 at ./include/net/sock.h:644 smc_unhash_sk+0x37b/0x3f0
[   45.991105] Kernel panic - not syncing: panic_on_warn set ...
[   45.991105] 
[   45.998495] CPU: 0 PID: 4604 Comm: syz-executor644 Not tainted 4.18.0-rc5+ #29
[   46.005851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.015202] Call Trace:
[   46.017805]  dump_stack+0x185/0x1e0
[   46.021453]  panic+0x3d0/0x9b0
[   46.024651]  __warn+0x40f/0x580
[   46.027928]  ? smc_unhash_sk+0x37b/0x3f0
[   46.031997]  report_bug+0x72a/0x880
[   46.035622]  ? smc_unhash_sk+0x37b/0x3f0
[   46.039706]  ? smc_unhash_sk+0x37b/0x3f0
[   46.043798]  do_error_trap+0x1fe/0x710
[   46.047755]  ? sock_destroy_inode+0xab/0xd0
[   46.052101]  ? sock_alloc_inode+0x2b0/0x2b0
[   46.056449]  do_invalid_op+0x46/0x50
[   46.060194]  invalid_op+0x14/0x20
[   46.063646] RIP: 0010:smc_unhash_sk+0x37b/0x3f0
[   46.068295] Code: d5 f7 e9 e5 fe ff ff 8b 7d d4 e8 30 95 d5 f7 e9 f7 fe ff ff 8b 3a e8 24 95 d5 f7 41 83 fe 01 0f 85 11 ff ff ff e8 95 e0 79 f7 <0f> 0b 4d 85 e4 0f 84 0f ff ff ff 8b 7d d4 e8 02 95 d5 f7 4d 85 e4 
[   46.087644] RSP: 0018:ffff8801a8cff9f8 EFLAGS: 00010293
[   46.093126] RAX: ffffffff89ee446b RBX: ffff8801bb110080 RCX: ffff88018f9d1d80
[   46.100400] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000a626600
[   46.107663] RBP: ffff8801a8cffa78 R08: 0000000000480020 R09: 0000000000000002
[   46.114935] R10: 0000000000000000 R11: ffffffff89ee40f0 R12: 0000000000000000
[   46.122197] R13: ffff8801bb110000 R14: 0000000000000001 R15: 00000000a88000a1
[   46.129477]  ? smc_hash_sk+0x3a0/0x3a0
[   46.133364]  ? smc_unhash_sk+0x37b/0x3f0
[   46.137451]  ? smc_unhash_sk+0x37b/0x3f0
[   46.141530]  ? smc_hash_sk+0x3a0/0x3a0
[   46.145412]  smc_release+0x81b/0x900
[   46.149158]  ? smc_sock_alloc+0x830/0x830
[   46.153335]  sock_close+0x11e/0x360
[   46.156961]  __fput+0x458/0xa30
[   46.160254]  ? fput+0x300/0x300
[   46.163546]  ____fput+0x37/0x40
[   46.166834]  task_work_run+0x22e/0x2b0
[   46.170724]  do_exit+0x110e/0x3930
[   46.174289]  do_group_exit+0x1a0/0x360
[   46.178195]  __do_sys_exit_group+0x21/0x30
[   46.182458]  __se_sys_exit_group+0x14/0x20
[   46.186711]  __x64_sys_exit_group+0x4c/0x50
[   46.191055]  ? do_group_exit+0x360/0x360
[   46.195126]  do_syscall_64+0x15b/0x230
[   46.199019]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   46.204206] RIP: 0033:0x440789
[   46.207382] Code: Bad RIP value.
[   46.210760] RSP: 002b:00007fff647c8e88 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7
[   46.218470] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440789
[   46.225735] RDX: 0000000000440789 RSI: 0000000000000000 RDI: 0000000000000001
[   46.232999] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000401d00
[   46.240273] R10: 0000000020000140 R11: 0000000000000206 R12: 0000000000401c70
[   46.247534] R13: 0000000000401d00 R14: 0000000000000000 R15: 0000000000000000
[   46.255350] Dumping ftrace buffer:
[   46.258880]    (ftrace buffer empty)
[   46.262594] Kernel Offset: disabled
[   46.266219] Rebooting in 86400 seconds..