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Date:   Tue, 17 Oct 2023 13:29:27 +0300
From:   Andy Shevchenko <andriy.shevchenko@...el.com>
To:     Jan Kara <jack@...e.cz>, Ferry Toth <ftoth@...londelft.nl>
Cc:     Linus Torvalds <torvalds@...ux-foundation.org>,
        linux-fsdevel@...r.kernel.org, linux-ext4@...r.kernel.org
Subject: Re: [GIT PULL] ext2, quota, and udf fixes for 6.6-rc1

+Ferry

On Tue, Oct 17, 2023 at 01:27:19PM +0300, Andy Shevchenko wrote:
> On Wed, Aug 30, 2023 at 12:24:34PM +0200, Jan Kara wrote:
> >   Hello Linus,
> > 
> >   could you please pull from
> > 
> > git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs.git for_v6.6-rc1
> > 
> > to get:
> > * fixes for possible use-after-free issues with quota when racing with
> >   chown
> > * fixes for ext2 crashing when xattr allocation races with another
> >   block allocation to the same file from page writeback code
> > * fix for block number overflow in ext2
> > * marking of reiserfs as obsolete in MAINTAINERS
> > * assorted minor cleanups
> > 
> > Top of the tree is df1ae36a4a0e. The full shortlog is:
> 
> This merge commit (?) broke boot on Intel Merrifield.
> It has earlycon enabled and only what I got is watchdog
> trigger without a bit of information printed out.
> 
> I tried to give a two bisects with the same result.
> 
> Try 1:
> 
> git bisect bad 461f35f014466c4e26dca6be0f431f57297df3f2                                                          # good: [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
> git bisect good bd6c11bc43c496cddfc6cf603b5d45365606dbd5
> # good: [ef35c7ba60410926d0501e45aad299656a83826c] Revert "Revert "drm/amdgpu/display: change pipe policy for DCN 2.0""
> git bisect good ef35c7ba60410926d0501e45aad299656a83826c
> # good: [d68b4b6f307d155475cce541f2aee938032ed22e] Merge tag 'mm-nonmm-stable-2023-08-28-22-48' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
> git bisect good d68b4b6f307d155475cce541f2aee938032ed22e
> # good: [87fa732dc5ff9ea6a2e75b630f7931899e845eb1] Merge tag 'x86-core-2023-08-30-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect good 87fa732dc5ff9ea6a2e75b630f7931899e845eb1
> # good: [bc609f4867f6a14db0efda55a7adef4dca16762e] Merge tag 'drm-misc-next-fixes-2023-08-24' of git://anongit.freedesktop.org/drm/drm-misc into drm-next
> git bisect good bc609f4867f6a14db0efda55a7adef4dca16762e
> # good: [63580f669d7ff5aa5a1fa2e3994114770a491722] Merge tag 'ovl-update-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
> git bisect good 63580f669d7ff5aa5a1fa2e3994114770a491722
> # good: [5221002c054376fcf2f0cea1d13f00291a90222e] Merge tag 'repair-force-rebuild-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.6-mergeA
> git bisect good 5221002c054376fcf2f0cea1d13f00291a90222e
> # bad: [1500e7e0726e963f64b9785a0cb0a820b2587bad] Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
> git bisect bad 1500e7e0726e963f64b9785a0cb0a820b2587bad
> # good: [7a64774add85ce673a089810fae193b02003be24] quota: use lockdep_assert_held_write in dquot_load_quota_sb
> git bisect good 7a64774add85ce673a089810fae193b02003be24
> # good: [b450159d0903b06ebea121a010ab9c424b67c408] ext2: introduce new flags argument for ext2_new_blocks()
> git bisect good b450159d0903b06ebea121a010ab9c424b67c408
> # good: [9bc6fc3304d89f19c028cb4a8d6af94f9e5faeb0] ext2: dump current reservation window info
> git bisect good 9bc6fc3304d89f19c028cb4a8d6af94f9e5faeb0
> # good: [df1ae36a4a0e92340daea12e88d43eeb2eb013b1] ext2: Fix kernel-doc warnings
> git bisect good df1ae36a4a0e92340daea12e88d43eeb2eb013b1
> # first bad commit: [1500e7e0726e963f64b9785a0cb0a820b2587bad] Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
> 
> Try 2:
> 
> git bisect start
> # status: waiting for both good and bad commits
> # bad: [58720809f52779dc0f08e53e54b014209d13eebb] Linux 6.6-rc6
> git bisect bad 58720809f52779dc0f08e53e54b014209d13eebb
> # status: waiting for good commit(s), bad commit known
> # good: [5221002c054376fcf2f0cea1d13f00291a90222e] Merge tag 'repair-force-rebuild-6.6_2023-08-10' of https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux into xfs-6.6-mergeA
> git bisect good 5221002c054376fcf2f0cea1d13f00291a90222e
> # bad: [c66403f62717e1af3be2a1873d52d2cf4724feba] Merge tag 'genpd-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/linux-pm
> git bisect bad c66403f62717e1af3be2a1873d52d2cf4724feba
> # good: [bd6c11bc43c496cddfc6cf603b5d45365606dbd5] Merge tag 'net-next-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
> git bisect good bd6c11bc43c496cddfc6cf603b5d45365606dbd5
> # good: [3698a75f5a98d0a6599e2878ab25d30a82dd836a] Merge tag 'drm-intel-next-fixes-2023-08-24' of git://anongit.freedesktop.org/drm/drm-intel into drm-next
> git bisect good 3698a75f5a98d0a6599e2878ab25d30a82dd836a
> # good: [1a35914f738c564060a14388f52a06669b09e0b3] Merge tag 'integrity-v6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity
> git bisect good 1a35914f738c564060a14388f52a06669b09e0b3
> # good: [b36e672b6b6fa4f68fc74c3b85ba9b4a615fc1d9] ASoC: tegra: merge DAI call back functions into ops
> git bisect good b36e672b6b6fa4f68fc74c3b85ba9b4a615fc1d9
> # good: [692f5510159c79bfa312a4e27a15e266232bfb4c] Merge tag 'asoc-v6.6' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
> git bisect good 692f5510159c79bfa312a4e27a15e266232bfb4c
> # good: [1687d8aca5488674686eb46bf49d1d908b2672a1] Merge tag 'x86_apic_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
> git bisect good 1687d8aca5488674686eb46bf49d1d908b2672a1
> # bad: [53ea7f624fb91074c2f9458832ed74975ee5d64c] Merge tag 'xfs-6.6-merge-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
> git bisect bad 53ea7f624fb91074c2f9458832ed74975ee5d64c
> # good: [df1ae36a4a0e92340daea12e88d43eeb2eb013b1] ext2: Fix kernel-doc warnings
> git bisect good df1ae36a4a0e92340daea12e88d43eeb2eb013b1
> # bad: [1500e7e0726e963f64b9785a0cb0a820b2587bad] Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
> git bisect bad 1500e7e0726e963f64b9785a0cb0a820b2587bad
> # good: [b0504bfe1b8acdcfb5ef466581d930835ef3c49e] ovl: add support for unique fsid per instance
> git bisect good b0504bfe1b8acdcfb5ef466581d930835ef3c49e
> # good: [36295542969dcfe7443f8cc5247863ed06a936d5] ovl: Kconfig: introduce CONFIG_OVERLAY_FS_DEBUG
> git bisect good 36295542969dcfe7443f8cc5247863ed06a936d5
> # good: [adcd459ff805ce5e11956cfa1e9aa85471b6ae8d] ovl: validate superblock in OVL_FS()
> git bisect good adcd459ff805ce5e11956cfa1e9aa85471b6ae8d
> # good: [63580f669d7ff5aa5a1fa2e3994114770a491722] Merge tag 'ovl-update-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/overlayfs/vfs
> git bisect good 63580f669d7ff5aa5a1fa2e3994114770a491722
> # first bad commit: [1500e7e0726e963f64b9785a0cb0a820b2587bad] Merge tag 'for_v6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
> 
> I'm full ears on how to debug this. Note, the earlyprintk doesn't work on this
> platform as it has no legacy UARTs.
> 
> -- 
> With Best Regards,
> Andy Shevchenko
> 
> 

-- 
With Best Regards,
Andy Shevchenko


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