linux-kernel - Re: [LKP] [genetlink] WARNING: CPU: 0 PID: 804 at net/netlink/genetlink.c:1037 genl

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Date:	Mon, 09 Feb 2015 16:31:47 +0800
From:	Huang Ying <ying.huang@...el.com>
To:	Johannes Berg <johannes.berg@...el.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	LKML <linux-kernel@...r.kernel.org>, LKP ML <lkp@...org>
Subject: Re: [LKP] [genetlink] WARNING: CPU: 0 PID: 804 at
 net/netlink/genetlink.c:1037 genl_unbind+0xc0/0xd0()

I found the test summary table for the test, just FYI.

+---------------------------------------------------+------------+------------+
|                                                   | f555f3d76a | 5ad6300524 |
+---------------------------------------------------+------------+------------+
| boot_successes                                    | 10         | 21         |
| boot_failures                                     | 36         | 25         |
| WARNING:at_net/netlink/genetlink.c:#genl_unbind() | 36         | 3          |
+---------------------------------------------------+------------+------------+

Best Regards,
Huang, Ying

On Mon, 2015-02-09 at 16:07 +0800, Huang Ying wrote:
> FYI, we noticed the below changes on
> 
> commit 5ad6300524c0332ac67e912c20d6e5cf262ba58f ("genetlink: disallow subscribing to unknown mcast groups")
> 
> Although the frequency decreased a lot, from 100% to about 8.33%, we still find the warning in dmesg after applying the commit.
> 
> [  299.872857] ------------[ cut here ]------------
> [  300.039960] WARNING: CPU: 0 PID: 804 at net/netlink/genetlink.c:1037 genl_unbind+0xc0/0xd0()
> [  300.360780] CPU: 0 PID: 804 Comm: trinity-main Not tainted 3.19.0-rc4-00160-g5ad6300 #11
> [  300.360783] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
> [  300.360793]  ffffffff823ad820 ffff88001556be68 ffffffff81d86b84 0000000000000065
> [  300.360795]  0000000000000000 ffff88001556bea8 ffffffff810c2f30 ffffffff82635dc0
> [  300.360796]  0000000000000000 ffffffff82635dc0 0000000000000001 ffffffff836d7000
> [  300.360799] Call Trace:
> [  300.361185]  [<ffffffff81d86b84>] dump_stack+0x4f/0x7b
> [  300.361254]  [<ffffffff810c2f30>] warn_slowpath_common+0x80/0xc0
> [  300.361256]  [<ffffffff810c3035>] warn_slowpath_null+0x15/0x20
> [  300.361270]  [<ffffffff81d7a250>] genl_unbind+0xc0/0xd0
> [  300.361272]  [<ffffffff81d7782b>] netlink_setsockopt+0x24b/0x270
> [  300.361279]  [<ffffffff81d3d3be>] SyS_setsockopt+0x5e/0xc0
> [  300.361285]  [<ffffffff81d95f29>] system_call_fastpath+0x12/0x17
> [  300.361296] ---[ end trace 5d4dac2c7bb8ca45 ]---
> 
> Thanks,
> Huang, Ying
> 
> _______________________________________________
> LKP mailing list
> LKP@...ux.intel.com


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