From: Zhang Yu <zhangyu-fnst@xxxxxxxxxxxxxx>
[TEST/fuzz] case: 004-simple-dump-tree
Since the wrong key(DATA_RELOC_TREE CHUNK_ITEM 0) in root tree,
error calling print_chunk(), resulting in num_stripes == 0.
ERROR:
[TEST/fuzz] 004-simple-dump-tree
ctree.h:317: btrfs_chunk_item_size: BUG_ON `num_stripes == 0`
triggered, value 1
failed (ignored, ret=134): /myproject/btrfs-progs/btrfs
inspect-internal dump-tree
/myproject/btrfs-progs/tests/fuzz-tests/images/
bko-155201-wrong-chunk-item-in-root-tree.raw.restored
test failed for case 004-simple-dump-tree
Makefile:288: recipe for target 'test-fuzz' failed
make: *** [test-fuzz] Error 1
So, check on num_stripes in print_chunk
Signed-off-by: Zhang Yu <zhangyu-fnst@xxxxxxxxxxxxxx>
---
print-tree.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/print-tree.c b/print-tree.c
index a0d3395..08f7edb 100644
--- a/print-tree.c
+++ b/print-tree.c
@@ -199,6 +199,15 @@ void print_chunk(struct extent_buffer *eb, struct btrfs_chunk *chunk)
{
int num_stripes = btrfs_chunk_num_stripes(eb, chunk);
int i;
+ /*
+ * check on num_stripes
+ * Btrfs_chunk contains at least one stripes
+ */
+ if (num_stripes < 1) {
+ printf("invalid num_stripes: %u\n", num_stripes);
+ return;
+ }
+
u32 chunk_item_size = btrfs_chunk_item_size(num_stripes);
char chunk_flags_str[32] = {0};
--
2.9.4
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