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From: Prithvi T. <act...@gm...> - 2025-11-25 19:29:05
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#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 7367539ad4b0f8f9b396baf02110962333719a48 Signed-off-by: Prithvi Tambewagh <act...@gm...> --- fs/jfs/jfs_dmap.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/jfs/jfs_dmap.c b/fs/jfs/jfs_dmap.c index cb3cda1390ad..8dba15c83a49 100644 --- a/fs/jfs/jfs_dmap.c +++ b/fs/jfs/jfs_dmap.c @@ -2142,6 +2142,11 @@ static void dbAllocBits(struct bmap * bmp, struct dmap * dp, s64 blkno, int size; s8 *leaf; + if(blkno >= le64_to_cpu(bmp->db_mapsize)) { + jfs_error(bmp->db_ipbmap->i_sb, "Allocation request out of bounds\n"); + return; + } + /* pick up a pointer to the leaves of the dmap tree */ leaf = dp->tree.stree + LEAFIND; base-commit: 7367539ad4b0f8f9b396baf02110962333719a48 -- 2.34.1 |
