BUG_ON() can be triggered if some image contains overlap chunks. volumes.c:1930: read_one_chunk: BUG_ON `ret` triggered, value -17 btrfs(+0x2cf12)[0x5601efa17f12] btrfs(+0x2fd8b)[0x5601efa1ad8b] btrfs(btrfs_read_chunk_tree+0x2bf)[0x5601efa1b30f] btrfs(btrfs_setup_chunk_tree_and_device_map+0xe8)[0x5601efa07718] btrfs(+0x1c944)[0x5601efa07944] btrfs(open_ctree_fs_info+0x90)[0x5601efa07b90] btrfs(cmd_check+0x4d7)[0x5601efa4f8c7] btrfs(main+0x88)[0x5601ef9fd768] /usr/lib/libc.so.6(__libc_start_main+0xeb)[0x7f3c7787306b] btrfs(_start+0x2a)[0x5601ef9fd88a]
Extent cache code can already detect it without problem, we only need to remove the BUG_ON() and exit gracefully. Reported-by: Xu Wen <[email protected]> Link: https://bugzilla.kernel.org/show_bug.cgi?id=200409 Signed-off-by: Qu Wenruo <[email protected]> --- volumes.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/volumes.c b/volumes.c index 24eb3e8b2578..21a1fc31fcba 100644 --- a/volumes.c +++ b/volumes.c @@ -1924,9 +1924,12 @@ static int read_one_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, } ret = insert_cache_extent(&map_tree->cache_tree, &map->ce); - BUG_ON(ret); + if (ret < 0) { + error("failed to add chunk map start=%llu len=%llu: %d (%s)", + map->ce.start, map->ce.size, ret, strerror(-ret)); + } - return 0; + return ret; } static int fill_device_from_item(struct extent_buffer *leaf, -- 2.18.0 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
