From: Gao Xiang gaoxiang25@huawei.com
commit 3407a4198faf01c9d7596c45b8606834b8dfc2b7 upstream.
As reported by erofs-utils fuzzer, unsupported compressed clustersize will make fill_inode_lazy fail, for such case we cannot set EROFS_V_Z_INITED_BIT since we need return failure for each z_erofs_map_blocks_iter().
Fixes: 152a333a5895 ("staging: erofs: add compacted compression indexes support") Cc: stable@vger.kernel.org # 5.3+ Signed-off-by: Gao Xiang gaoxiang25@huawei.com Reviewed-by: Chao Yu yuchao0@huawei.com Link: https://lore.kernel.org/r/20190819103426.87579-3-gaoxiang25@huawei.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/staging/erofs/zmap.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
--- a/drivers/staging/erofs/zmap.c +++ b/drivers/staging/erofs/zmap.c @@ -86,12 +86,11 @@ static int fill_inode_lazy(struct inode
vi->z_physical_clusterbits[1] = vi->z_logical_clusterbits + ((h->h_clusterbits >> 5) & 7); + set_bit(EROFS_V_Z_INITED_BIT, &vi->flags); unmap_done: kunmap_atomic(kaddr); unlock_page(page); put_page(page); - - set_bit(EROFS_V_Z_INITED_BIT, &vi->flags); out_unlock: clear_and_wake_up_bit(EROFS_V_BL_Z_BIT, &vi->flags); return err;