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Date:   Wed, 10 May 2023 11:09:29 +0200
From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     Rudi Heitbaum <rudi@heitbaum.com>
Cc:     stable@vger.kernel.org, patches@lists.linux.dev,
        linux-kernel@vger.kernel.org, torvalds@linux-foundation.org,
        akpm@linux-foundation.org, linux@roeck-us.net, shuah@kernel.org,
        patches@kernelci.org, lkft-triage@lists.linaro.org, pavel@denx.de,
        jonathanh@nvidia.com, f.fainelli@gmail.com,
        sudipm.mukherjee@gmail.com, srw@sladewatkins.net, rwarsow@gmx.de,
        ntfs3@lists.linux.dev, almaz.alexandrovich@paragon-software.com
Subject: Re: [PATCH 6.3 000/694] 6.3.2-rc2 review
Message-ID: <2023051048-plus-mountable-6280@gregkh>
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On Wed, May 10, 2023 at 06:29:23PM +1000, Rudi Heitbaum wrote:
> On Wed, 10 May 2023 at 17:25, Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > On Tue, May 09, 2023 at 02:58:06PM +0000, Rudi Heitbaum wrote:
> > > On Tue, May 09, 2023 at 03:56:42PM +0200, Greg Kroah-Hartman wrote:
> > > > On Tue, May 09, 2023 at 01:10:32PM +0000, Rudi Heitbaum wrote:
> > > > > On Tue, May 09, 2023 at 08:06:58AM +0000, Rudi Heitbaum wrote:
> > > > > > On Tue, May 09, 2023 at 05:26:44AM +0200, Greg Kroah-Hartman wrote:
> > > > > > > This is the start of the stable review cycle for the 6.3.2 release.
> > > > > > > There are 694 patches in this series, all will be posted as a response
> > > > > > > to this one.  If anyone has any issues with these being applied, please
> > > > > > > let me know.
> > > > > > >
> > > > > > > Responses should be made by Thu, 11 May 2023 03:05:05 +0000.
> > > > > > > Anything received after that time might be too late.
> > > > > >
> > > > > > Hi Greg,
> > > > > >
> > > > > > 6.3.2-rc2 tested.
> > > > >
> > > > > Hi Greg,
> > > > >
> > > > > Further testing and have seen ntfs3: NULL pointer dereference with ntfs_lookup errors
> > > > > with 6.3.2-rc2 (I have not seen this error before.) No other errors in the logs.
> > > >
> > > > Can you reproduce this without the extern, gpl-violation module loaded?
> > > >
> > > > thanks,
> > > >
> > > > greg k-h
> > >
> > > Hi Greg,
> > >
> > > I dropped the bcm_sta and recompiled and commented out the i915.guc=3
> > > and was able to reproduce.
> > >
> > > [   84.745080] BUG: kernel NULL pointer dereference, address: 0000000000000020
> > > [   84.746239] #PF: supervisor read access in kernel mode
> > > [   84.747599] #PF: error_code(0x0000) - not-present page
> > > [   84.748929] PGD 0 P4D 0
> > > [   84.750240] Oops: 0000 [#1] SMP NOPTI
> > > [   84.751575] CPU: 2 PID: 3176 Comm: .NET ThreadPool Not tainted 6.3.2-rc2 #1
> > > [   84.752998] Hardware name: Intel(R) Client Systems NUC12WSKi7/NUC12WSBi7, BIOS WSADL357.0085.2022.0718.1739 07/18/2022
> > > [   84.754474] RIP: 0010:ntfs_lookup+0x76/0xe0 [ntfs3]
> >
> > And do you get this same crash on ntfs3 on 6.4-rc1?  Is this a new
> > regression, or does it also show up on 6.3.1?
> 
> Tested with 6.3.1 during the day today. No errors, and had been
> running 6.3.1 with no issue. Retested with 6.3.2-rc2 and problem
> immediately evident. So yes - I believe a regression.
> 
> I have built and am now testing 6.4.0-rc1 this evening - no errors so far.
> 
> [    0.000000] Linux version 6.4.0-rc1 (docker@1ccd349e2545)
> (x86_64-libreelec-linux-gnu-gcc-13.1.0 (GCC) 13.1.0, GNU ld (GNU
> Binutils) 2.40) #1 SMP Wed May 10 07:51:37 UTC 2023
> 
> > And ntfs, ick, why?  And .NET?  What a combination...
> 
> Joys of media players. Test device gets to test exfat, ntfs3, .NET,
> and throw in a compile host/GHA runner to put it through paces.

Yeah, this should work.  Thanks for verifying this works on other
releases.  Any chance you can do 'git bisect' to track down the
offending commit?  In looking things over, I don't see anything
obvious...

thanks,

greg k-h