6.18-stable review patch. If anyone has any objections, please let me know.
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From: Dmitry Antipov dmantipov@yandex.ru
[ Upstream commit 2214ec4bf89d0fd27717322d3983a2f3b469c7f3 ]
In 'ocfs2_merge_rec_left()', do not reset 'left_path' to NULL after move, thus allowing 'ocfs2_free_path()' to free it before return.
Link: https://lkml.kernel.org/r/20251205065159.392749-1-dmantipov@yandex.ru Fixes: 677b975282e4 ("ocfs2: Add support for cross extent block") Signed-off-by: Dmitry Antipov dmantipov@yandex.ru Reported-by: syzbot+cfc7cab3bb6eaa7c4de2@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=cfc7cab3bb6eaa7c4de2 Reviewed-by: Heming Zhao heming.zhao@suse.com Acked-by: Joseph Qi joseph.qi@linux.alibaba.com Cc: Mark Fasheh mark@fasheh.com Cc: Joel Becker jlbec@evilplan.org Cc: Junxiao Bi junxiao.bi@oracle.com Cc: Changwei Ge gechangwei@live.cn Cc: Jun Piao piaojun@huawei.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ocfs2/alloc.c | 1 - 1 file changed, 1 deletion(-)
diff --git a/fs/ocfs2/alloc.c b/fs/ocfs2/alloc.c index 162711cc5b201..a0ced11e0c24a 100644 --- a/fs/ocfs2/alloc.c +++ b/fs/ocfs2/alloc.c @@ -3654,7 +3654,6 @@ static int ocfs2_merge_rec_left(struct ocfs2_path *right_path, * So we use the new rightmost path. */ ocfs2_mv_path(right_path, left_path); - left_path = NULL; } else ocfs2_complete_edge_insert(handle, left_path, right_path, subtree_index);