Do not hang if there is a cluster chain loop in rootdir
---
libblkid/src/superblocks/exfat.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/libblkid/src/superblocks/exfat.c b/libblkid/src/superblocks/exfat.c
index 01ed30b..e058423 100644
--- a/libblkid/src/superblocks/exfat.c
+++ b/libblkid/src/superblocks/exfat.c
@@ -86,8 +86,10 @@ static struct exfat_entry_label *find_label(blkid_probe pr,
uint32_t cluster = le32_to_cpu(sb->rootdir_cluster);
uint64_t offset = cluster_to_offset(sb, cluster);
uint8_t *entry;
+ const size_t max_iter = 10000;
+ size_t i = 0;
- for (;;) {
+ for (; i<max_iter; i++) {
entry = (uint8_t *) blkid_probe_get_buffer(pr, offset,
EXFAT_ENTRY_SIZE);
if (!entry)
--
2.1.4
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