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jfs: Fix sanity check in dbMount

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BugLink: https://bugs.launchpad.net/bugs/2097575

[ Upstream commit 67373ca8404fe57eb1bb4b57f314cff77ce54932 ]

MAXAG is a legitimate value for bmp->db_numag

Fixes: e63866a47556 ("jfs: fix out-of-bounds in dbNextAG() and diAlloc()")

Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Dave Kleikamp
2024-10-22 09:40:37 -05:00
committed by Stefan Bader
parent 4d4a9f8d3f
commit 3809e81db4
1 changed files with 1 additions and 1 deletions
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fs/jfs/jfs_dmap.c
+1 -1
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@@ -187,7 +187,7 @@ int dbMount(struct inode *ipbmap)
}
bmp->db_numag = le32_to_cpu(dbmp_le->dn_numag);
if (!bmp->db_numag || bmp->db_numag >= MAXAG) {
if (!bmp->db_numag || bmp->db_numag > MAXAG) {
err = -EINVAL;
goto err_release_metapage;
}