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authorGao Xiang <hsiangkao@linux.alibaba.com>2022-12-05 23:00:49 +0800
committerGao Xiang <hsiangkao@linux.alibaba.com>2022-12-07 10:56:31 +0800
commitd5d188b8f8b38d3d71dd05993874b4fc9284ce95 (patch)
tree1f79a3757c0325b1252bf79be4fdf4c1f3f52ee6 /fs/erofs
parentc42c0ffe81176940bd5dead474216b7198d77675 (diff)
erofs: fix missing unmap if z_erofs_get_extent_compressedlen() fails
Otherwise, meta buffers could be leaked. Fixes: cec6e93beadf ("erofs: support parsing big pcluster compress indexes") Reviewed-by: Yue Hu <huyue2@coolpad.com> Reviewed-by: Chao Yu <chao@kernel.org> Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com> Link: https://lore.kernel.org/r/20221205150050.47784-1-hsiangkao@linux.alibaba.com
Diffstat (limited to 'fs/erofs')
-rw-r--r--fs/erofs/zmap.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/fs/erofs/zmap.c b/fs/erofs/zmap.c
index 749a5ac943f4..98eff1259de4 100644
--- a/fs/erofs/zmap.c
+++ b/fs/erofs/zmap.c
@@ -694,7 +694,7 @@ static int z_erofs_do_map_blocks(struct inode *inode,
map->m_pa = blknr_to_addr(m.pblk);
err = z_erofs_get_extent_compressedlen(&m, initial_lcn);
if (err)
- goto out;
+ goto unmap_out;
}
if (m.headtype == Z_EROFS_VLE_CLUSTER_TYPE_PLAIN) {
@@ -718,14 +718,12 @@ static int z_erofs_do_map_blocks(struct inode *inode,
if (!err)
map->m_flags |= EROFS_MAP_FULL_MAPPED;
}
+
unmap_out:
erofs_unmap_metabuf(&m.map->buf);
-
-out:
erofs_dbg("%s, m_la %llu m_pa %llu m_llen %llu m_plen %llu m_flags 0%o",
__func__, map->m_la, map->m_pa,
map->m_llen, map->m_plen, map->m_flags);
-
return err;
}