diff options
| -rw-r--r-- | fs/ext4/extents_status.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/ext4/extents_status.c b/fs/ext4/extents_status.c index 98c90f5834ee..3f5c188953a4 100644 --- a/fs/ext4/extents_status.c +++ b/fs/ext4/extents_status.c @@ -344,8 +344,14 @@ static int ext4_es_can_be_merged(struct extent_status *es1, if (ext4_es_status(es1) != ext4_es_status(es2)) return 0; - if (((__u64) es1->es_len) + es2->es_len > 0xFFFFFFFFULL) + if (((__u64) es1->es_len) + es2->es_len > EXT_MAX_BLOCKS) { + pr_warn("ES assertion failed when merging extents. " + "The sum of lengths of es1 (%d) and es2 (%d) " + "is bigger than allowed file size (%d)\n", + es1->es_len, es2->es_len, EXT_MAX_BLOCKS); + WARN_ON(1); return 0; + } if (((__u64) es1->es_lblk) + es1->es_len != es2->es_lblk) return 0; |