Re: [rhashtable] [ INFO: suspicious RCU usage. ]

From: David Miller
Date: Fri Apr 03 2015 - 15:09:59 EST


From: Thomas Graf <tgraf@xxxxxxx>
Date: Thu, 2 Apr 2015 08:33:56 +0100

> On 04/02/15 at 12:29pm, Herbert Xu wrote:
>> On Thu, Apr 02, 2015 at 12:11:35PM +0800, Fengguang Wu wrote:
>> >
>> > Yes it is contained in next-20150401 which is bad:
>> >
>> > # extra tests on tree/branch next/master
>> > git bisect bad e954104e2b634b42811dad8d502cbf240f206df2 # 21:22 0- 60 Add linux-next specific files for 20150401
>> >
>> > The dmesg there is
>> >
>> > [ 1.149409] test_firmware: interface ready
>> > [ 1.150293] Running resizable hashtable tests...
>> > [ 1.151209] Adding 2048 keys
>> > [ 1.152069] ------------[ cut here ]------------
>> > [ 1.152978] WARNING: CPU: 0 PID: 1 at lib/rhashtable.c:409 rhashtable_insert_rehash+0x9d/0x1d0()
>>
>> I see. This is actually a completely different problem.
>>
>> ---8<---
>> test_rhashtable: Remove bogus max_size setting
>>
>> Now that resizing is completely automatic, we need to remove
>> the max_size setting or the test will fail.
>>
>> Reported-by: Fengguang Wu <fengguang.wu@xxxxxxxxx>
>> Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
>
> Acked-by: Thomas Graf <tgraf@xxxxxxx>
>
> Had the same fix queued up in an upcoming series ;-)

Applied to net-next, thanks everyone.
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