Re: [REGRESSION 6.1.70] system calls with CIFS mounts failing with "Resource temporarily unavailable"

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Hi Greg,

On 21/02/24 01:58, gregkh@xxxxxxxxxxxxxxxxxxx wrote:
On Tue, Feb 06, 2024 at 01:16:01PM +0530, Harshit Mogalapalli wrote:
Hi Salvatore,

Adding kovalev here(who backported it to 5.10.y)

On 03/02/24 9:09 pm, Salvatore Bonaccorso wrote:
Hi,

On Thu, Feb 01, 2024 at 12:58:28PM +0000, Mohamed Abuelfotoh, Hazem wrote:

On 31/01/2024 17:19, Paulo Alcantara wrote:
Greg, could you please drop

           b3632baa5045 ("cifs: fix off-by-one in SMB2_query_info_init()")

from v5.10.y as suggested by Salvatore?

Thanks.

Are we dropping b3632baa5045 ("cifs: fix off-by-one in
SMB2_query_info_init()") from v5.10.y while keeping it on v5.15.y? if we are
dropping it from v5.15.y as well then we should backport 06aa6eff7b smb3:
Replace smb2pdu 1-element arrays with flex-arrays to v5.15.y I remember
trying to backport this patch on v5.15.y but there were some merge conflicts
there.

06aa6eff7b smb3: Replace smb2pdu 1-element arrays with flex-arrays

While I'm not eligible to say what should be done, my understading is
that Greg probably would prefer to have the "backport 06aa6eff7b"
version. What we know is that having now both commits in the
stable-rc/linux-5.10.y queue breaks  cifs and the backport variants
seens to work fine (Paulo Alcantara probably though can comment best).

Having both one-liner fix that I have sent and the above commit isn't
correct.

As 06aa6eff7b smb3: Replace smb2pdu 1-element arrays with flex-arrays
was backportable to 5.10.y it should now work as well for the upper
one 5.15.y.

Correct, I agree. I had to send one-liner fix as we have the
backport("06aa6eff7b smb3: Replace smb2pdu 1-element arrays with
flex-arrays") missing in 5.15.y and when I tried backporting it to 5.15.y I
saw many conflicts.

If we have backport for 5.15.y similar to 5.10.y we could ask greg to remove
one liner fix from both 5.10.y and 5.15.y: https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/cifs-fix-off-by-one-in-smb2_query_info_init.patch

Someone needs to tell me what to do, as I'm lost.


For 5.15.y:

1. Remove this patch from the queue:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.15/cifs-fix-off-by-one-in-smb2_query_info_init.patch
2. Add this patch(kovalev's backport) to queue:
https://lore.kernel.org/lkml/20240206161111.454699-1-kovalev@xxxxxxxxxxxx/T/#u

For 5.10.y:

1. Remove this patch from the queue:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/cifs-fix-off-by-one-in-smb2_query_info_init.patch

(kovalev's backport is already in queue[1], so nothing to add here like '2' in 5.15.y)



Reason for the above:

For 5.10.y and 5.15.y: I have sent a diverged patch(one liner) which is present in the queue now and have to be removed because kovalev sent a backport of upstream commit by resolving conflicts. Given that both of us were working on same problem there should only be one fix there, so we are going with Kovalev's backport and removing my one liner fix. Kovalev's backport for 5.10.y was already added to queue but not in 5.15.y. So remove my one liner fix from both queues and queuing up Kovalev's 5.15.y backport will solve the problems. Please let me know if any of this is unclear, I can share more details.


Ref:
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/queue-5.10/smb3-replace-smb2pdu-1-element-arrays-with-flex-arrays.patch


Thanks,
Harshit
thanks,

greg k-h





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