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authorQu Wenruo <wqu@suse.com>2021-08-17 02:55:40 +0300
committerDavid Sterba <dsterba@suse.com>2021-09-17 20:29:38 +0300
commitbbc9a6eb5eec03dcafee266b19f56295e3b2aa8f (patch)
tree90ae9f25c09872b0f937786ee06f44f7189ba4fc /fs/btrfs
parentf79645df806565a03abb2847a1d20e6930b25e7e (diff)
downloadlinux-bbc9a6eb5eec03dcafee266b19f56295e3b2aa8f.tar.xz
btrfs: replace BUG_ON() in btrfs_csum_one_bio() with proper error handling
There is a BUG_ON() in btrfs_csum_one_bio() to catch code logic error. It has indeed caught several bugs during subpage development. But the BUG_ON() itself will bring down the whole system which is an overkill. Replace it with a WARN() and exit gracefully, so that it won't crash the whole system while we can still catch the code logic error. Signed-off-by: Qu Wenruo <wqu@suse.com> Reviewed-by: David Sterba <dsterba@suse.com> Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs')
-rw-r--r--fs/btrfs/file-item.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index 2673c6ba7a4e..0b9401a5afd3 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -665,7 +665,18 @@ blk_status_t btrfs_csum_one_bio(struct btrfs_inode *inode, struct bio *bio,
if (!ordered) {
ordered = btrfs_lookup_ordered_extent(inode, offset);
- BUG_ON(!ordered); /* Logic error */
+ /*
+ * The bio range is not covered by any ordered extent,
+ * must be a code logic error.
+ */
+ if (unlikely(!ordered)) {
+ WARN(1, KERN_WARNING
+ "no ordered extent for root %llu ino %llu offset %llu\n",
+ inode->root->root_key.objectid,
+ btrfs_ino(inode), offset);
+ kvfree(sums);
+ return BLK_STS_IOERR;
+ }
}
nr_sectors = BTRFS_BYTES_TO_BLKS(fs_info,