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

From: "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
To: "Mohamed Abuelfotoh, Hazem" <abuehaze@amazon.com>
Cc: Linux regressions mailing list <regressions@lists.linux.dev>,
	SeongJae Park <sj@kernel.org>,
	"pc@manguebit.com" <pc@manguebit.com>,
	"leonardo@schenkel.net" <leonardo@schenkel.net>,
	"linux-cifs@vger.kernel.org" <linux-cifs@vger.kernel.org>,
	"m.weissbach@info-gate.de" <m.weissbach@info-gate.de>,
	"sairon@sairon.cz" <sairon@sairon.cz>,
	"stable@vger.kernel.org" <stable@vger.kernel.org>
Subject: Re: [REGRESSION 6.1.70] system calls with CIFS mounts failing with "Resource temporarily unavailable"
Date: Mon, 26 Feb 2024 15:55:39 +0100	[thread overview]
Message-ID: <2024022604-encrypt-dullness-8127@gregkh> (raw)
In-Reply-To: <fd0174a5-8319-436d-bf05-0f6a3794f6f9@amazon.com>

On Mon, Feb 26, 2024 at 02:28:41PM +0000, Mohamed Abuelfotoh, Hazem wrote:
> On 23/02/2024 06:14, Linux regression tracking #update (Thorsten Leemhuis)
> wrote:
> > CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you can confirm the sender and know the content is safe.
> > 
> > 
> 
> > Thx. Took a while (among others because the stable team worked a bit
> > slower that usual), but from what Paulo Alcantara and Salvatore
> > Bonaccorso recently said everything is afaics now fixed or on track to
> > be fixed in all affected stable/longterm branches:
> > https://lore.kernel.org/all/ZdgyEfNsev8WGIl5@eldamar.lan/
> > 
> > If I got this wrong and that's not the case, please holler.
> > 
> > #regzbot resolve: apparently fixed in all affected stable/longterm
> > branches with various commits
> > #regzbot ignore-activity
> > 
> > Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
> > --
> > Everything you wanna know about Linux kernel regression tracking:
> > https://linux-regtracking.leemhuis.info/about/#tldr
> > That page also explains what to do if mails like this annoy you.
> > 
> > 
> 
> We are seeing CIFS mount failures after upgrading from v5.15.148 to
> v5.15.149, I have reverted eb3e28c1e8 ("smb3: Replace smb2pdu 1-element
> arrays with flex-arrays") and I no longer see the regression. It looks like
> the issue is also impacting v5.10.y as the mentioned reverted patch has also
> been merged to v5.10.210. I am currently running the CIFS mount test
> manually and will update the thread with the exact mount failure error. I
> think we should revert eb3e28c1e8 ("smb3: Replace smb2pdu 1-element arrays
> with flex-arrays") from both v5.15.y & v5.10.y until we come up with a
> proper fix on this versions, please note that if we will take this path then
> we will need to re-introduce. b3632baa5045 ("cifs: fix off-by-one in
> SMB2_query_info_init()") which has been removed from latest v5.10.y and
> v5.15.y releases.
> 
> 

Please send this as a patch series, in a new thread, so we can properly
track this, we have too many different threads here (and the subject
line is wrong...)

thanks,

greg k-h