From: Jan Kara <jack@suse.cz>
Date: Tue, 28 Feb 2023 11:11:38 +0000 (+0100)
Subject: udf: Warn if block mapping is done for in-ICB files
X-Git-Tag: v6.6.7~3009^2~13
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=63bceed808c5cafbac4e20b5a40012a0ec6c6529;p=platform%2Fkernel%2Flinux-starfive.git

udf: Warn if block mapping is done for in-ICB files

Now that address space operations are merge dfor in-ICB and normal
files, it is more likely some code mistakenly tries to map blocks for
in-ICB files. WARN and return error instead of silently returning
garbage.

Signed-off-by: Jan Kara <jack@suse.cz>
---

diff --git a/fs/udf/inode.c b/fs/udf/inode.c
index 0cb7d8f..2210e5e 100644
--- a/fs/udf/inode.c
+++ b/fs/udf/inode.c
@@ -416,6 +416,9 @@ static int udf_map_block(struct inode *inode, struct udf_map_rq *map)
 	int err;
 	struct udf_inode_info *iinfo = UDF_I(inode);
 
+	if (WARN_ON_ONCE(iinfo->i_alloc_type == ICBTAG_FLAG_AD_IN_ICB))
+		return -EFSCORRUPTED;
+
 	map->oflags = 0;
 	if (!(map->iflags & UDF_MAP_CREATE)) {
 		struct kernel_lb_addr eloc;