From: Li Wang <liwang@kylinos.cn>
To: Stefan Hajnoczi <stefanha@redhat.com>,
German Maglione <gmaglione@redhat.com>,
Vivek Goyal <vgoyal@redhat.com>,
Miklos Szeredi <miklos@szeredi.hu>
Cc: "Eugenio Pérez" <eperezma@redhat.com>,
virtualization@lists.linux.dev, linux-fsdevel@vger.kernel.org,
"Li Wang" <liwang@kylinos.cn>
Subject: [PATCH 1/3] virtiofs: Only parse the out header if the request expects a reply in virtio_fs_request_complete()
Date: Mon, 23 Mar 2026 17:43:15 +0800 [thread overview]
Message-ID: <20260323094317.46302-1-liwang@kylinos.cn> (raw)
The value of req->out.h may be undefined when FR_ISREPLY is not set.
Signed-off-by: Li Wang <liwang@kylinos.cn>
---
fs/fuse/virtio_fs.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/fuse/virtio_fs.c b/fs/fuse/virtio_fs.c
index 2f7485ffac52..dec2c5a30e4e 100644
--- a/fs/fuse/virtio_fs.c
+++ b/fs/fuse/virtio_fs.c
@@ -789,7 +789,8 @@ static void virtio_fs_request_complete(struct fuse_req *req,
struct folio *folio;
args = req->args;
- copy_args_from_argbuf(args, req);
+ if (test_bit(FR_ISREPLY, &req->flags))
+ copy_args_from_argbuf(args, req);
if (args->out_pages && args->page_zeroing) {
len = args->out_args[args->out_numargs - 1].size;
--
2.34.1
next reply other threads:[~2026-03-23 9:44 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-23 9:43 Li Wang [this message]
2026-03-23 9:43 ` [PATCH 2/3] virtiofs: Allow ENOMEM requests to wait and retry later in send_forget_request() Li Wang
2026-03-23 9:43 ` [PATCH 3/3] virtiofs: Distinguish between 1 and negative return values " Li Wang
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