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| author | Gao Xiang <gaoxiang25@huawei.com> | 2019-08-19 13:34:23 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-21 05:18:20 +0300 |
| commit | 138e1a0990e80db486ab9f6c06bd5c01f9a97999 (patch) | |
| tree | ad0c60da14aadcaa63f63f22e9aea4d12a2beb29 /drivers | |
| parent | 3407a4198faf01c9d7596c45b8606834b8dfc2b7 (diff) | |
| download | linux-138e1a0990e80db486ab9f6c06bd5c01f9a97999.tar.xz | |
staging: erofs: add two missing erofs_workgroup_put for corrupted images
As reported by erofs-utils fuzzer, these error handling
path will be entered to handle corrupted images.
Lack of erofs_workgroup_puts will cause unmounting
unsuccessfully.
Fix these return values to EFSCORRUPTED as well.
Fixes: 3883a79abd02 ("staging: erofs: introduce VLE decompression support")
Cc: <stable@vger.kernel.org> # 4.19+
Signed-off-by: Gao Xiang <gaoxiang25@huawei.com>
Reviewed-by: Chao Yu <yuchao0@huawei.com>
Link: https://lore.kernel.org/r/20190819103426.87579-4-gaoxiang25@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/erofs/zdata.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/staging/erofs/zdata.c b/drivers/staging/erofs/zdata.c index 87b0c96caf8f..23283c97fd3b 100644 --- a/drivers/staging/erofs/zdata.c +++ b/drivers/staging/erofs/zdata.c @@ -357,14 +357,16 @@ static struct z_erofs_collection *cllookup(struct z_erofs_collector *clt, cl = z_erofs_primarycollection(pcl); if (unlikely(cl->pageofs != (map->m_la & ~PAGE_MASK))) { DBG_BUGON(1); - return ERR_PTR(-EIO); + erofs_workgroup_put(grp); + return ERR_PTR(-EFSCORRUPTED); } length = READ_ONCE(pcl->length); if (length & Z_EROFS_PCLUSTER_FULL_LENGTH) { if ((map->m_llen << Z_EROFS_PCLUSTER_LENGTH_BIT) > length) { DBG_BUGON(1); - return ERR_PTR(-EIO); + erofs_workgroup_put(grp); + return ERR_PTR(-EFSCORRUPTED); } } else { unsigned int llen = map->m_llen << Z_EROFS_PCLUSTER_LENGTH_BIT; |