[PATCH] netfs: Fix a KMSAN uninit-value error in netfs_clear_buffer

[Chang Yu]

Use kzalloc instead of kmalloc in netfs_buffer_append_folio to fix
a KMSAN uninit-value error in netfs_clear_buffer

Signed-off-by: Chang Yu <marcus.yu.56@xxxxxxxxx>
Reported-by: syzbot+921873345a95f4dae7e9@xxxxxxxxxxxxxxxxxxxxxxxxx
Closes: https://syzkaller.appspot.com/bug?extid=921873345a95f4dae7e9
Fixes: cd0277ed0c18 ("netfs: Use new folio_queue data type and iterator instead of xarray iter")
---
 fs/netfs/misc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/netfs/misc.c b/fs/netfs/misc.c
index 0ad0982ce0e2..6f967b6d30b6 100644
--- a/fs/netfs/misc.c
+++ b/fs/netfs/misc.c
@@ -22,7 +22,7 @@ int netfs_buffer_append_folio(struct netfs_io_request *rreq, struct folio *folio
 		return -EIO;
 
 	if (!tail || folioq_full(tail)) {
-		tail = kmalloc(sizeof(*tail), GFP_NOFS);
+		tail = kzalloc(sizeof(*tail), GFP_NOFS);
 		if (!tail)
 			return -ENOMEM;
 		netfs_stat(&netfs_n_folioq);
-- 
2.46.0