[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   39.426762] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   43.021281] random: sshd: uninitialized urandom read (32 bytes read)
[   43.384464] random: sshd: uninitialized urandom read (32 bytes read)
[   44.297722] random: sshd: uninitialized urandom read (32 bytes read)
[   64.177949] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts.
[   70.360297] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   70.494083] ==================================================================
[   70.501488] BUG: KMSAN: uninit-value in rds_connect+0x213/0x950
[   70.507563] CPU: 0 PID: 4780 Comm: syz-executor239 Not tainted 4.19.0-rc1+ #38
[   70.515069] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.524408] Call Trace:
[   70.526991]  dump_stack+0x14b/0x190
[   70.530616]  kmsan_report+0x183/0x2b0
[   70.534413]  __msan_warning+0x70/0xc0
[   70.538213]  rds_connect+0x213/0x950
[   70.541922]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   70.547288]  ? rds_release+0x630/0x630
[   70.551179]  __sys_connect+0x64e/0x750
[   70.555067]  ? kmsan_set_origin_inline+0x6b/0x120
[   70.559923]  __x64_sys_connect+0xd8/0x120
[   70.564066]  ? __sys_connect+0x750/0x750
[   70.568117]  do_syscall_64+0x15b/0x220
[   70.572003]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   70.577184] RIP: 0033:0x440199
[   70.580370] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   70.599262] RSP: 002b:00007fff5f41c118 EFLAGS: 00000213 ORIG_RAX: 000000000000002a
[   70.606976] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440199
[   70.614512] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
[   70.621789] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   70.629061] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401a20
[   70.636323] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000
[   70.643624] 
[   70.645248] Local variable description: ----address@__sys_connect
[   70.651464] Variable was created at:
[   70.655172]  __sys_connect+0x6a/0x750
[   70.658960]  __x64_sys_connect+0xd8/0x120
[   70.663089] ==================================================================
[   70.670430] Disabling lock debugging due to kernel taint
[   70.675868] Kernel panic - not syncing: panic_on_warn set ...
[   70.675868] 
[   70.683227] CPU: 0 PID: 4780 Comm: syz-executor239 Tainted: G    B             4.19.0-rc1+ #38
[   70.691959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   70.701297] Call Trace:
[   70.703949]  dump_stack+0x14b/0x190
[   70.707712]  panic+0x35d/0x8cb
[   70.710944]  kmsan_report+0x2a8/0x2b0
[   70.714750]  __msan_warning+0x70/0xc0
[   70.718566]  rds_connect+0x213/0x950
[   70.722279]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   70.727644]  ? rds_release+0x630/0x630
[   70.731534]  __sys_connect+0x64e/0x750
[   70.735448]  ? kmsan_set_origin_inline+0x6b/0x120
[   70.740329]  __x64_sys_connect+0xd8/0x120
[   70.744530]  ? __sys_connect+0x750/0x750
[   70.748626]  do_syscall_64+0x15b/0x220
[   70.752519]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   70.757714] RIP: 0033:0x440199
[   70.760920] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
[   70.779811] RSP: 002b:00007fff5f41c118 EFLAGS: 00000213 ORIG_RAX: 000000000000002a
[   70.787531] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440199
[   70.794803] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003
[   70.802059] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   70.809485] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401a20
[   70.816754] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000
[   70.824326] Dumping ftrace buffer:
[   70.827856]    (ftrace buffer empty)
[   70.831549] Kernel Offset: disabled
[   70.835168] Rebooting in 86400 seconds..