Re: [PATCH 1/1] Revert "RDMA/rxe: Add workqueue support for rxe tasks"

[Bob Pearson <rpearsonhpe@gmail.com>]

On 9/26/23 12:05, Bart Van Assche wrote:
> On 9/26/23 07:06, Leon Romanovsky wrote:
>> On Tue, Sep 26, 2023 at 12:43:57PM +0300, Leon Romanovsky wrote:
>>>
>>> On Fri, 22 Sep 2023 12:32:31 -0400, Zhu Yanjun wrote:
>>>> This reverts commit 9b4b7c1f9f54120940e243251e2b1407767b3381.
>>>>
>>>> This commit replaces tasklet with workqueue. But this results
>>>> in occasionally pocess hang at the blktests test case srp/002.
>>>> After the discussion in the link[1], this commit is reverted.
>>>>
>>>>
>>>> [...]
>>>
>>> Applied, thanks!
>>>
>>> [1/1] Revert "RDMA/rxe: Add workqueue support for rxe tasks"
>>>        https://git.kernel.org/rdma/rdma/c/e710c390a8f860
>>
>> I applied this patch, but will delay it for some time with a hope that
>> fix will arrive in the near future.
> 
> Thank you Leon. With this revert applied on top of the rdma for-next branch, I
> don't see the KASAN complaint anymore that I reported yesterday. I think this
> is more evidence that the KASAN complaint was caused by the RXE driver.
> 
> Bart.

Bart,

I am working to try to reproduce the KASAN warning. Unfortunately, so far I am not able to see it
in Ubuntu + Linus' kernel (as you described) on metal. The config file is different but copies
the CONFIG_KASAN_xxx exactly as yours. With KASAN enabled it hangs on every iteration of srp/002
but without a KASAN warning. I am now building an openSuSE VM for qemu and will see if that
causes the warning.

Thanks for the support,

Bob