xfs: don't leak a locked dquot when xfs_dquot_attach_buf fails

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commit 204c8f77e8 upstream.

xfs_qm_quotacheck_dqadjust acquired the dquot through xfs_qm_dqget,
which means it owns a reference and holds q_qlock.  Both need to
be dropped on an error exit.

Cc: <stable@vger.kernel.org> # v6.13
Fixes: ca378189fd ("xfs: convert quotacheck to attach dquot buffers")
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Christoph Hellwig 2025-11-10 14:22:53 +01:00 • committed by Greg Kroah-Hartman

parent 24709064ee

commit 507b7333ac

1 changed files with 3 additions and 2 deletions

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fs/xfs/xfs_qm.c

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