Patch "jfs: Fix sanity check in dbMount" has been added to the 4.19-stable tree

[Sasha Levin <sashal@xxxxxxxxxx>]

This is a note to let you know that I've just added the patch titled

    jfs: Fix sanity check in dbMount

to the 4.19-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     jfs-fix-sanity-check-in-dbmount.patch
and it can be found in the queue-4.19 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit 64745ae29fac92128aff2ed539b51765189f4cc8
Author: Dave Kleikamp <dave.kleikamp@xxxxxxxxxx>
Date:   Tue Oct 22 09:40:37 2024 -0500

    jfs: Fix sanity check in dbMount
    
    [ 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@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 21597e8b727c6..b6c698fe7301d 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -200,7 +200,7 @@ 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;
 	}