[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   34.223703] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   36.163100] random: sshd: uninitialized urandom read (32 bytes read)
[   36.604086] random: sshd: uninitialized urandom read (32 bytes read)
[   38.020911] random: sshd: uninitialized urandom read (32 bytes read)
[   42.576637] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.4' (ECDSA) to the list of known hosts.
[   48.066403] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   48.192834] IPVS: ftp: loaded support on port[0] = 21
[   48.232534] WARNING: CPU: 1 PID: 4585 at ./include/net/sock.h:644 smc_unhash_sk+0x37b/0x3f0
[   48.241060] Kernel panic - not syncing: panic_on_warn set ...
[   48.241060] 
[   48.248433] CPU: 1 PID: 4585 Comm: syz-executor478 Not tainted 4.18.0-rc5+ #29
[   48.255781] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.265128] Call Trace:
[   48.267759]  dump_stack+0x185/0x1e0
[   48.271408]  panic+0x3d0/0x9b0
[   48.274606]  __warn+0x40f/0x580
[   48.277883]  ? smc_unhash_sk+0x37b/0x3f0
[   48.281956]  report_bug+0x72a/0x880
[   48.285583]  ? smc_unhash_sk+0x37b/0x3f0
[   48.289658]  ? smc_unhash_sk+0x37b/0x3f0
[   48.293743]  do_error_trap+0x1fe/0x710
[   48.297652]  ? sock_destroy_inode+0xab/0xd0
[   48.301991]  ? sock_alloc_inode+0x2b0/0x2b0
[   48.306331]  do_invalid_op+0x46/0x50
[   48.310103]  invalid_op+0x14/0x20
[   48.313573] RIP: 0010:smc_unhash_sk+0x37b/0x3f0
[   48.318226] 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 
[   48.337580] RSP: 0018:ffff88018f0cf9f8 EFLAGS: 00010293
[   48.342949] RAX: ffffffff89ee446b RBX: ffff88018ff30080 RCX: ffff88018fc29d80
[   48.350219] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea00095fb200
[   48.357488] RBP: ffff88018f0cfa78 R08: 0000000000480020 R09: 0000000000000002
[   48.364760] R10: 0000000000000000 R11: ffffffff89ee40f0 R12: 0000000000000000
[   48.372040] R13: ffff88018ff30000 R14: 0000000000000001 R15: 00000000d0e000a1
[   48.379332]  ? smc_hash_sk+0x3a0/0x3a0
[   48.383217]  ? smc_unhash_sk+0x37b/0x3f0
[   48.387301]  ? smc_unhash_sk+0x37b/0x3f0
[   48.391403]  ? smc_hash_sk+0x3a0/0x3a0
[   48.395285]  smc_release+0x81b/0x900
[   48.399034]  ? smc_sock_alloc+0x830/0x830
[   48.403228]  sock_close+0x11e/0x360
[   48.406854]  __fput+0x458/0xa30
[   48.410151]  ? fput+0x300/0x300
[   48.413455]  ____fput+0x37/0x40
[   48.416745]  task_work_run+0x22e/0x2b0
[   48.420637]  do_exit+0x110e/0x3930
[   48.424209]  do_group_exit+0x1a0/0x360
[   48.428119]  __do_sys_exit_group+0x21/0x30
[   48.432367]  __se_sys_exit_group+0x14/0x20
[   48.436618]  __x64_sys_exit_group+0x4c/0x50
[   48.440959]  ? do_group_exit+0x360/0x360
[   48.445030]  do_syscall_64+0x15b/0x230
[   48.448921]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   48.454114] RIP: 0033:0x440789
[   48.457288] Code: Bad RIP value.
[   48.460663] RSP: 002b:00007fff66813e68 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7
[   48.468381] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440789
[   48.475650] RDX: 0000000000440789 RSI: 0000000000000000 RDI: 0000000000000001
[   48.482915] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000401d00
[   48.490203] R10: 0000000020000140 R11: 0000000000000202 R12: 0000000000401c70
[   48.497468] R13: 0000000000401d00 R14: 0000000000000000 R15: 0000000000000000
[   48.505255] Dumping ftrace buffer:
[   48.508786]    (ftrace buffer empty)
[   48.512484] Kernel Offset: disabled
[   48.516106] Rebooting in 86400 seconds..