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xfs: fix off-by-one error when calling xchk_xref_has_rt_owner

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LOLLM noticed an off-by-one error when computing the length of the
rtrmap to cross-check.

Cc: stable@vger.kernel.org # v6.14
Fixes: 037a44d827 ("xfs: cross-reference the realtime rmapbt")
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
2026-07-13 23:06:28 -07:00
committed by Carlos Maiolino
parent 540ddc6262
commit 5d72a68f20
1 changed files with 1 additions and 1 deletions
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2
fs/xfs/scrub/rtbitmap.c
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@@ -258,7 +258,7 @@ xchk_rtbitmap(
* the last free extent we saw and the last possible extent in the rt
* group.
*/
last_rgbno = rtg->rtg_extents * mp->m_sb.sb_rextsize - 1;
last_rgbno = rtg->rtg_extents * mp->m_sb.sb_rextsize;
if (rtb->next_free_rgbno < last_rgbno)
xchk_xref_has_rt_owner(sc, rtb->next_free_rgbno,
last_rgbno - rtb->next_free_rgbno);