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SubjectRe: BUG: NULL pointer dereference at ib_uverbs_comp_handler+0x20

On 01/08/17 01:29 PM, Jason Gunthorpe wrote:
> On Tue, Aug 01, 2017 at 12:32:57PM -0600, Logan Gunthorpe wrote:
>> Couldn't create rdma QP - Invalid argument
>> Unable to create QP.
>> Failed to create QP.
> Failing to create a QP makes me wonder if you have have this patch?
> Subject: [PATCH v2 1/2] RDMA/uverbs: Fix the check for port number
> The port number is only valid if IB_QP_PORT is set in the mask.
> So only check port number if it is valid to prevent modify_qp from
> failing due to an invalid port number.
> Fixes: 5ecce4c9b17b("Check port number supplied by user verbs cmds")
> Cc: <> # v2.6.14+
> Reviewed-by: Steve Wise <>
> Signed-off-by: Mustafa Ismail <>

Oh, oops, I forgot about that. I mentioned the fix for that in my
original email and it seems I wasn't testing apples to apples for my
testing today. During my testing today, the branch with the reverted
commits had the fix for that commit while the branch with Bharat's patch

I just did a test with both Bharat's patch and 5a7a88f1b4, and
everything is working correctly again.

So that's great, we just need these patches to be picked up by the
stable kernels.



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