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xfs: avoid UAF on sc->tempip in xrep_tempfile_create

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LOLLM noticed a potential UAF if the tempfile creation code fails after
it set sc->tempip.  Fix that.

Cc: stable@vger.kernel.org # v6.10
Fixes: 84c14ee39d ("xfs: create temporary files and directories for online repair")
Signed-off-by: Darrick J. Wong <djwong@kernel.org>
Assisted-by: LOLLM # finding obvious bugs
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Carlos Maiolino <cem@kernel.org>
This commit is contained in:
Darrick J. Wong 2026-07-26 22:24:17 -07:00 committed by Carlos Maiolino
parent b1a296fc22
commit 0c88e10d12
1 changed files with 1 additions and 0 deletions
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fs/xfs/scrub/tempfile.c
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@ -174,6 +174,7 @@ xrep_tempfile_create(
xfs_iunlock(sc->tempip, XFS_ILOCK_EXCL);
xfs_finish_inode_setup(sc->tempip);
xchk_irele(sc, sc->tempip);
sc->tempip = NULL;
}
out_release_dquots:
xfs_qm_dqrele(udqp);