Commit e46a28ca authored by Liu Bo's avatar Liu Bo Committed by David Sterba

Btrfs: remove BUG() in raid56

This BUG() has been triggered by a fuzz testing image, which contains
an invalid chunk type, ie. a single stripe chunk has the raid6 type.

Btrfs can handle this gracefully by returning -EIO, so besides using
btrfs_warn to give us more debugging information rather than a single
BUG(), we can return error properly.
Signed-off-by: default avatarLiu Bo <bo.li.liu@oracle.com>
Reviewed-by: default avatarDavid Sterba <dsterba@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent afce772e
...@@ -2143,7 +2143,10 @@ int raid56_parity_recover(struct btrfs_root *root, struct bio *bio, ...@@ -2143,7 +2143,10 @@ int raid56_parity_recover(struct btrfs_root *root, struct bio *bio,
rbio->faila = find_logical_bio_stripe(rbio, bio); rbio->faila = find_logical_bio_stripe(rbio, bio);
if (rbio->faila == -1) { if (rbio->faila == -1) {
BUG(); btrfs_warn(root->fs_info,
"%s could not find the bad stripe in raid56 so that we cannot recover any more (bio has logical %llu len %llu, bbio has map_type %llu)",
__func__, (u64)bio->bi_iter.bi_sector << 9,
(u64)bio->bi_iter.bi_size, bbio->map_type);
if (generic_io) if (generic_io)
btrfs_put_bbio(bbio); btrfs_put_bbio(bbio);
kfree(rbio); kfree(rbio);
......
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