FYI, we noticed the below changes on

https://github.com/0day-ci/linux Baozeng-Ding/netlink-fix-null-pointer-dereference-on-nlk-groups/20160112-191519
commit 54fd0f3336b00065f775f6686fad980bb51274ae ("netlink: fix null pointer dereference on nlk->groups")


Please wait: booting...
Starting udev
[   13.203952] ------------[ cut here ]------------
[   13.204449] WARNING: CPU: 0 PID: 126 at net/netlink/af_netlink.c:1579 netlink_bind+0x237/0x240()
[   13.205522] Modules linked in:
[   13.205855] CPU: 0 PID: 126 Comm: udevd Not tainted 4.4.0-rc8-01516-g54fd0f3 #1
[   13.206588] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[   13.207484]  00000000 00000000 9055fdf0 81211a4f 00000000 9055fe20 81085e03 81782028
[   13.208375]  00000000 0000007e 817eee2c 0000062b 814915f7 814915f7 00000000 0000000c
[   13.209293]  92745000 9055fe30 81085ebb 00000009 00000000 9055fe54 814915f7 9055fe64
[   13.210178] Call Trace:
[   13.210433]  [<81211a4f>] dump_stack+0x48/0x69
[   13.210878]  [<81085e03>] warn_slowpath_common+0x83/0xc0
[   13.211411]  [<814915f7>] ? netlink_bind+0x237/0x240
[   13.211906]  [<814915f7>] ? netlink_bind+0x237/0x240
[   13.212411]  [<81085ebb>] warn_slowpath_null+0x1b/0x20
[   13.212924]  [<814915f7>] netlink_bind+0x237/0x240
[   13.213439]  [<81436e28>] SyS_bind+0x68/0xb0
[   13.213874]  [<8117c5bb>] ? __fd_install+0x8b/0x180
[   13.214373]  [<810a6051>] ? __might_sleep+0x31/0xa0
[   13.214860]  [<810a6051>] ? __might_sleep+0x31/0xa0
[   13.215357]  [<8117c6cb>] ? fd_install+0x1b/0x20
[   13.215822]  [<81438112>] SyS_socketcall+0x2e2/0x320
[   13.216330]  [<81161f69>] ? __sb_end_write+0x19/0x20
[   13.216830]  [<810c5a69>] ? percpu_up_read+0x19/0x70
[   13.217368]  [<81161f69>] ? __sb_end_write+0x19/0x20
[   13.217866]  [<8116033d>] ? vfs_write+0x15d/0x1b0
[   13.218345]  [<81001213>] do_syscall_32_irqs_on+0x53/0xb0
[   13.218886]  [<815c3c2d>] entry_INT80_32+0x31/0x31
[   13.219370] ---[ end trace 3c7305e80c53fb83 ]---
[   13.223734] ------------[ cut here ]------------





Thanks,
Kernel Test Robot