6.10-stable review patch. If anyone has any objections, please let me know.
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From: Konstantin Komarov almaz.alexandrovich@paragon-software.com
[ Upstream commit 69943484b95267c94331cba41e9e64ba7b24f136 ]
Attempting to retrieve an attribute data block in a compressed frame is ignored.
Fixes: be71b5cba2e64 ("fs/ntfs3: Add attrib operations") Signed-off-by: Konstantin Komarov almaz.alexandrovich@paragon-software.com Signed-off-by: Sasha Levin sashal@kernel.org --- fs/ntfs3/attrib.c | 13 +++++++++++++ 1 file changed, 13 insertions(+)
diff --git a/fs/ntfs3/attrib.c b/fs/ntfs3/attrib.c index 8638248d80d93..7918ab1a3f354 100644 --- a/fs/ntfs3/attrib.c +++ b/fs/ntfs3/attrib.c @@ -975,6 +975,19 @@ int attr_data_get_block(struct ntfs_inode *ni, CLST vcn, CLST clen, CLST *lcn, if (err) goto out;
+ /* Check for compressed frame. */ + err = attr_is_frame_compressed(ni, attr, vcn >> NTFS_LZNT_CUNIT, &hint); + if (err) + goto out; + + if (hint) { + /* if frame is compressed - don't touch it. */ + *lcn = COMPRESSED_LCN; + *len = hint; + err = -EOPNOTSUPP; + goto out; + } + if (!*len) { if (run_lookup_entry(run, vcn, lcn, len, NULL)) { if (*lcn != SPARSE_LCN || !new)