[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   28.733311] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   31.673552] random: sshd: uninitialized urandom read (32 bytes read)
[   32.136721] random: sshd: uninitialized urandom read (32 bytes read)
[   33.188888] random: sshd: uninitialized urandom read (32 bytes read)
[   33.392698] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.10.41' (ECDSA) to the list of known hosts.
[   38.905236] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   39.013218] ==================================================================
[   39.020606] BUG: KMSAN: uninit-value in strlcpy+0x68/0x1c0
[   39.026211] CPU: 0 PID: 4506 Comm: syz-executor160 Not tainted 4.17.0-rc5+ #95
[   39.033543] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.042871] Call Trace:
[   39.045438]  dump_stack+0x185/0x1d0
[   39.049045]  ? strlcpy+0x68/0x1c0
[   39.052480]  kmsan_report+0x142/0x240
[   39.056260]  __msan_warning_32+0x6c/0xb0
[   39.060298]  strlcpy+0x68/0x1c0
[   39.063562]  do_ip_vs_set_ctl+0x3f1/0x2760
[   39.067779]  ? _cond_resched+0x3c/0xd0
[   39.071654]  ? mutex_lock+0x31/0x90
[   39.075258]  ? rcu_all_qs+0x32/0x1f0
[   39.078948]  ? lru_add_page_tail+0x1600/0x1600
[   39.083509]  ? local_bh_enable+0x40/0x40
[   39.087552]  nf_setsockopt+0x476/0x4d0
[   39.091422]  ip_setsockopt+0x24b/0x2b0
[   39.095288]  udp_setsockopt+0x108/0x1b0
[   39.099240]  ? udp_lib_setsockopt+0xad0/0xad0
[   39.103714]  ipv6_setsockopt+0x30c/0x340
[   39.107751]  ? __fdget+0x4e/0x60
[   39.111105]  ? ipv6_update_options+0x510/0x510
[   39.115677]  tcp_setsockopt+0x1bb/0x1f0
[   39.119639]  ? tcp_disconnect+0x15a0/0x15a0
[   39.123945]  sock_common_setsockopt+0x136/0x170
[   39.128593]  ? sock_common_recvmsg+0x270/0x270
[   39.133154]  __sys_setsockopt+0x4af/0x560
[   39.137284]  __x64_sys_setsockopt+0x15c/0x1c0
[   39.141757]  do_syscall_64+0x154/0x220
[   39.145623]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   39.150787] RIP: 0033:0x43fce9
[   39.153964] RSP: 002b:00007ffea6b1dd08 EFLAGS: 00000213 ORIG_RAX: 0000000000000036
[   39.161650] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9
[   39.168897] RDX: 000000000000048b RSI: 0000000000000000 RDI: 0000000000000003
[   39.176144] RBP: 00000000006ca018 R08: 0000000000000018 R09: 00000000004002c8
[   39.183395] R10: 00000000200001c0 R11: 0000000000000213 R12: 0000000000401610
[   39.190642] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000
[   39.197887] 
[   39.199489] Local variable description: ----arg@do_ip_vs_set_ctl
[   39.205612] Variable was created at:
[   39.209311]  do_ip_vs_set_ctl+0x93/0x2760
[   39.213437]  nf_setsockopt+0x476/0x4d0
[   39.217297] ==================================================================
[   39.224628] Disabling lock debugging due to kernel taint
[   39.230054] Kernel panic - not syncing: panic_on_warn set ...
[   39.230054] 
[   39.237397] CPU: 0 PID: 4506 Comm: syz-executor160 Tainted: G    B             4.17.0-rc5+ #95
[   39.246118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.255462] Call Trace:
[   39.258031]  dump_stack+0x185/0x1d0
[   39.261639]  panic+0x39d/0x940
[   39.264816]  ? strlcpy+0x68/0x1c0
[   39.268249]  kmsan_report+0x238/0x240
[   39.272026]  __msan_warning_32+0x6c/0xb0
[   39.276062]  strlcpy+0x68/0x1c0
[   39.279324]  do_ip_vs_set_ctl+0x3f1/0x2760
[   39.283538]  ? _cond_resched+0x3c/0xd0
[   39.287402]  ? mutex_lock+0x31/0x90
[   39.291005]  ? rcu_all_qs+0x32/0x1f0
[   39.294705]  ? lru_add_page_tail+0x1600/0x1600
[   39.299265]  ? local_bh_enable+0x40/0x40
[   39.303304]  nf_setsockopt+0x476/0x4d0
[   39.307171]  ip_setsockopt+0x24b/0x2b0
[   39.311049]  udp_setsockopt+0x108/0x1b0
[   39.315015]  ? udp_lib_setsockopt+0xad0/0xad0
[   39.319497]  ipv6_setsockopt+0x30c/0x340
[   39.323534]  ? __fdget+0x4e/0x60
[   39.326876]  ? ipv6_update_options+0x510/0x510
[   39.331435]  tcp_setsockopt+0x1bb/0x1f0
[   39.335387]  ? tcp_disconnect+0x15a0/0x15a0
[   39.339685]  sock_common_setsockopt+0x136/0x170
[   39.344334]  ? sock_common_recvmsg+0x270/0x270
[   39.348890]  __sys_setsockopt+0x4af/0x560
[   39.353016]  __x64_sys_setsockopt+0x15c/0x1c0
[   39.357490]  do_syscall_64+0x154/0x220
[   39.361359]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   39.366522] RIP: 0033:0x43fce9
[   39.369688] RSP: 002b:00007ffea6b1dd08 EFLAGS: 00000213 ORIG_RAX: 0000000000000036
[   39.377372] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fce9
[   39.384624] RDX: 000000000000048b RSI: 0000000000000000 RDI: 0000000000000003
[   39.391871] RBP: 00000000006ca018 R08: 0000000000000018 R09: 00000000004002c8
[   39.399125] R10: 00000000200001c0 R11: 0000000000000213 R12: 0000000000401610
[   39.406376] R13: 00000000004016a0 R14: 0000000000000000 R15: 0000000000000000
[   39.414136] Dumping ftrace buffer:
[   39.417655]    (ftrace buffer empty)
[   39.421338] Kernel Offset: disabled
[   39.424939] Rebooting in 86400 seconds..