Re: 3.17 kernel crash while loading IPoIB

From: Eric Dumazet
Date: Tue Sep 23 2014 - 05:05:47 EST


On Tue, 2014-09-23 at 05:15 +0000, Sharma, Karun wrote:
> Hello:
>
> I am facing an issue wherein kernel 3.17 crashes while loading IPoIB
> module. I guess the issue discussed in this thread
> (https://www.mail-archive.com/linux-rdma@xxxxxxxxxxxxxxx/msg20963.html) is similar.
>
> We were able to reproduce the issue with RC6 also. Here are the steps
> I followed:
>
> I compiled and installed 3.17 kernel on top of RHEL 6.5.
> Then I changed rdma.conf to not load IPoIB (If I don't do this, the
> kernel crashes while booting and starting RDMA service.)
> After the server comes up, I just did "modprobe ib_ipoib" and kernel
> crashes.
> Please see below the kernel back trace.
>
> Seeing the announcement, it looks like RC6 will be the last RC for
> 3.17 kernel. Will the release happen with this issue? Is there any
> workaround available for this issue?
> I am not sure what mechanism/process is used to report issue to kernel
> community.
>
> Regards
> Karun

This seems fixed now :

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=257117862634d89de33fec74858b1a0ba5ab444b

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=b49fe36208b45f76dfbcfcd3afd952a33fa9f5ce


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