| Message ID | bd193c475fc99e6e14a12dc40938ed22609220d6.1646692474.git.josef@toxicpanda.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | btrfs: add snapshot_id to btrfs_header and root_item | expand |
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 951b2e0e0df1..31309aba3344 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -5960,6 +5960,7 @@ struct extent_buffer *__alloc_dummy_extent_buffer(struct btrfs_fs_info *fs_info, set_extent_buffer_uptodate(eb); btrfs_set_header_nritems(eb, 0); set_bit(EXTENT_BUFFER_UNMAPPED, &eb->bflags); + memzero_extent_buffer(eb, 0, sizeof(struct btrfs_header)); return eb; err:
Our self tests allocate dummy extent buffers to test a variety of things, however these eb's are very lightly initialized. This causes problems with the extent tree v2 stuff as we will read the header flags and could have the V2 flag set and thus do the wrong thing. Fix this by zero'ing out the header of any dummy extent buffers we allocate. Signed-off-by: Josef Bacik <josef@toxicpanda.com> --- fs/btrfs/extent_io.c | 1 + 1 file changed, 1 insertion(+)