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authorRemington Brasga <rbrasga@uci.edu>2024-07-10 00:12:44 +0000
committerDave Kleikamp <dave.kleikamp@oracle.com>2024-08-23 13:14:28 -0500
commitb0b2fc815e514221f01384f39fbfbff65d897e1c (patch)
treec0ccf010035405bbb068488674a3dd4d17e1200f /fs/jfs
parent3d5f968a177d468cd13568ef901c5be84d83d32b (diff)
jfs: UBSAN: shift-out-of-bounds in dbFindBits
Fix issue with UBSAN throwing shift-out-of-bounds warning. Reported-by: syzbot+e38d703eeb410b17b473@syzkaller.appspotmail.com Signed-off-by: Remington Brasga <rbrasga@uci.edu> Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Diffstat (limited to 'fs/jfs')
-rw-r--r--fs/jfs/jfs_dmap.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c
index 5713994328cb..ccdfa38d7a68 100644
--- a/fs/jfs/jfs_dmap.c
+++ b/fs/jfs/jfs_dmap.c
@@ -3022,7 +3022,7 @@ static int dbFindBits(u32 word, int l2nb)
/* scan the word for nb free bits at nb alignments.
*/
- for (bitno = 0; mask != 0; bitno += nb, mask >>= nb) {
+ for (bitno = 0; mask != 0; bitno += nb, mask = (mask >> nb)) {
if ((mask & word) == mask)
break;
}