[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[   33.768494] random: sshd: uninitialized urandom read (32 bytes read)
[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

syzkaller login: [   37.341524] random: sshd: uninitialized urandom read (32 bytes read)
[   37.717110] random: sshd: uninitialized urandom read (32 bytes read)
[   39.058916] random: sshd: uninitialized urandom read (32 bytes read)
[   57.969958] random: sshd: uninitialized urandom read (32 bytes read)
Warning: Permanently added '10.128.0.17' (ECDSA) to the list of known hosts.
[   63.553643] random: sshd: uninitialized urandom read (32 bytes read)
executing program
[   63.686093] WARNING: CPU: 0 PID: 4607 at mm/vmalloc.c:302 vmalloc_to_page+0x576/0x630
[   63.694133] Kernel panic - not syncing: panic_on_warn set ...
[   63.694133] 
[   63.701552] CPU: 0 PID: 4607 Comm: syz-executor252 Not tainted 4.17.0+ #20
[   63.708594] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   63.717973] Call Trace:
[   63.720607]  dump_stack+0x185/0x1d0
[   63.724299]  panic+0x3d0/0x9b0
[   63.727545]  __warn+0x40f/0x580
[   63.730851]  ? vmalloc_to_page+0x576/0x630
[   63.735138]  report_bug+0x72a/0x880
[   63.738788]  ? vmalloc_to_page+0x576/0x630
[   63.743061]  ? vmalloc_to_page+0x576/0x630
[   63.747338]  do_error_trap+0x1c1/0x620
[   63.751269]  ? release_pages+0x1637/0x1650
[   63.755663]  ? free_unref_page_list+0x78/0x8b0
[   63.760278]  ? release_pages+0x1637/0x1650
[   63.764719]  do_invalid_op+0x46/0x50
[   63.768476]  invalid_op+0x14/0x20
[   63.771951] RIP: 0010:vmalloc_to_page+0x576/0x630
[   63.776798] RSP: 0018:ffff88019448f968 EFLAGS: 00010293
[   63.782206] RAX: ffffffff81aec6a6 RBX: 0000000000000000 RCX: ffff88018e398000
[   63.789500] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffea0000409380
[   63.796795] RBP: ffff88019448f9d0 R08: ffffffff7fffffff R09: ffff8801939efa78
[   63.804088] R10: 0000000000000000 R11: ffffffff88829a70 R12: 0000000000000000
[   63.811387] R13: 0000000000000000 R14: ffff88000ac346d0 R15: 0000000000000000
[   63.818702]  ? inet_netconf_fill_devconf+0xc50/0xc50
[   63.823842]  ? vmalloc_to_page+0x576/0x630
[   63.828168]  ? vmalloc_to_page+0x576/0x630
[   63.832430]  kmsan_get_shadow_address+0xce/0x3d0
[   63.837206]  kmsan_copy_to_user+0x91/0x160
[   63.841489]  inet_gifconf+0x345/0x500
[   63.845325]  ? inet_netconf_fill_devconf+0xc50/0xc50
[   63.850483]  dev_ifconf+0x2b8/0x4f0
[   63.854150]  sock_do_ioctl+0x3a0/0x6c0
[   63.858060]  sock_ioctl+0x748/0xd10
[   63.861720]  ? __x64_sys_ioctl+0x280/0x320
[   63.866126]  ? do_vfs_ioctl+0x160/0x24b0
[   63.870251]  ? sock_poll+0x380/0x380
[   63.873999]  do_vfs_ioctl+0xcbd/0x24b0
[   63.877947]  ? __msan_metadata_ptr_for_load_4+0x10/0x20
[   63.883339]  ? __fget_light+0x1f5/0x700
[   63.887550]  __x64_sys_ioctl+0x280/0x320
[   63.891639]  ? ksys_ioctl+0x260/0x260
[   63.895462]  do_syscall_64+0x15b/0x230
[   63.899374]  entry_SYSCALL_64_after_hwframe+0x63/0xe7
[   63.904572] RIP: 0033:0x4400b9
[   63.907760] RSP: 002b:00007ffca7cc6828 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
[   63.915487] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004400b9
[   63.922769] RDX: 00000000200002c0 RSI: 0000004000008912 RDI: 0000000000000003
[   63.930057] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
[   63.937333] R10: 0000000000000000 R11: 0000000000000213 R12: 0000000000401940
[   63.944638] R13: 00000000004019d0 R14: 0000000000000000 R15: 0000000000000000
[   63.952467] Dumping ftrace buffer:
[   63.956029]    (ftrace buffer empty)
[   63.960043] Kernel Offset: disabled
[   63.963699] Rebooting in 86400 seconds..