[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   39.166496] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   42.758418] random: sshd: uninitialized urandom read (32 bytes read)
[   43.118327] random: sshd: uninitialized urandom read (32 bytes read)
[   44.065239] random: sshd: uninitialized urandom read (32 bytes read)
[   44.332312] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.15.207' (ECDSA) to the list of known hosts.
[   50.205338] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   50.336374] ==================================================================
[   50.343785] BUG: KMSAN: uninit-value in rds_bind+0x1f1/0x2360
[   50.349677] CPU: 1 PID: 4497 Comm: syz-executor098 Not tainted 4.19.0-rc1+ #36
[   50.357028] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.366381] Call Trace:
[   50.368990]  dump_stack+0x14b/0x190
[   50.372639]  kmsan_report+0x183/0x2b0
[   50.376453]  __msan_warning+0x70/0xc0
[   50.380253]  rds_bind+0x1f1/0x2360
[   50.383798]  ? __fget_light+0x53/0x700
[   50.387697]  ? __fdget+0x4e/0x60
[   50.391071]  ? __msan_metadata_ptr_for_load_4+0x10/0x20
[   50.396429]  ? __fget_light+0x1f1/0x700
[   50.400408]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   50.405765]  ? security_socket_bind+0x91/0x200
[   50.410348]  ? rds_remove_bound+0x910/0x910
[   50.414664]  ? rds_remove_bound+0x910/0x910
[   50.418984]  __sys_bind+0x594/0x6f0
[   50.422845]  ? kmsan_set_origin_inline+0x6b/0x120
[   50.427694]  __x64_sys_bind+0xd8/0x120
[   50.431594]  ? __sys_bind+0x6f0/0x6f0
[   50.435408]  do_syscall_64+0x15b/0x220
[   50.439297]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   50.444478] RIP: 0033:0x440099
[   50.447672] 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
[   50.466578] RSP: 002b:00007fffb43cf578 EFLAGS: 00000213 ORIG_RAX: 0000000000000031
[   50.474296] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440099
[   50.481570] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
[   50.488847] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   50.496109] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401920
[   50.503367] R13: 00000000004019b0 R14: 0000000000000000 R15: 0000000000000000
[   50.510641] 
[   50.512256] Local variable description: ----address@__sys_bind
[   50.518209] Variable was created at:
[   50.521917]  __sys_bind+0x6a/0x6f0
[   50.525464]  __x64_sys_bind+0xd8/0x120
[   50.529355] ==================================================================
[   50.536715] Disabling lock debugging due to kernel taint
[   50.542151] Kernel panic - not syncing: panic_on_warn set ...
[   50.542151] 
[   50.549513] CPU: 1 PID: 4497 Comm: syz-executor098 Tainted: G    B             4.19.0-rc1+ #36
[   50.558260] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   50.567612] Call Trace:
[   50.570223]  dump_stack+0x14b/0x190
[   50.573855]  panic+0x35d/0x8cb
[   50.577070]  ? __x64_sys_bind+0xd8/0x120
[   50.581149]  ? __msan_metadata_ptr_for_store_1+0x13/0x20
[   50.586617]  kmsan_report+0x2a8/0x2b0
[   50.590424]  __msan_warning+0x70/0xc0
[   50.594230]  rds_bind+0x1f1/0x2360
[   50.597771]  ? __fget_light+0x53/0x700
[   50.601655]  ? __fdget+0x4e/0x60
[   50.605024]  ? __msan_metadata_ptr_for_load_4+0x10/0x20
[   50.610383]  ? __fget_light+0x1f1/0x700
[   50.614358]  ? __msan_metadata_ptr_for_load_8+0x10/0x20
[   50.619717]  ? security_socket_bind+0x91/0x200
[   50.624296]  ? rds_remove_bound+0x910/0x910
[   50.628613]  ? rds_remove_bound+0x910/0x910
[   50.632938]  __sys_bind+0x594/0x6f0
[   50.636590]  ? kmsan_set_origin_inline+0x6b/0x120
[   50.641448]  __x64_sys_bind+0xd8/0x120
[   50.645334]  ? __sys_bind+0x6f0/0x6f0
[   50.649129]  do_syscall_64+0x15b/0x220
[   50.653021]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   50.658205] RIP: 0033:0x440099
[   50.661392] 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
[   50.680284] RSP: 002b:00007fffb43cf578 EFLAGS: 00000213 ORIG_RAX: 0000000000000031
[   50.687991] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440099
[   50.695249] RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003
[   50.702507] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8
[   50.709796] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401920
[   50.717056] R13: 00000000004019b0 R14: 0000000000000000 R15: 0000000000000000
[   50.724677] Dumping ftrace buffer:
[   50.728223]    (ftrace buffer empty)
[   50.731923] Kernel Offset: disabled
[   50.735553] Rebooting in 86400 seconds..