Re: [syzbot] [v9fs?] KMSAN: uninit-value in v9fs_evict_inode

[Charalampos Mitrodimas <charmitro@xxxxxxxxxx>]

please test uv in v9fs_evict_inode

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

diff --git a/fs/9p/vfs_inode.c b/fs/9p/vfs_inode.c
index 360a5304ec03..5d046f63e5fa 100644
--- a/fs/9p/vfs_inode.c
+++ b/fs/9p/vfs_inode.c
@@ -353,7 +353,8 @@ void v9fs_evict_inode(struct inode *inode)
 	filemap_fdatawrite(&inode->i_data);
 
 #ifdef CONFIG_9P_FSCACHE
-	fscache_relinquish_cookie(v9fs_inode_cookie(v9inode), false);
+	if (v9fs_inode_cookie(v9inode))
+		fscache_relinquish_cookie(v9fs_inode_cookie(v9inode), false);
 #endif
 }