linux-kernel - Re: [syzbot] [v9fs?] KMSAN: uninit-value in p9_client

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Date: Sun, 31 Mar 2024 07:49:59 +0800
From: Edward Adam Davis <eadavis@...com>
To: syzbot+ff14db38f56329ef68df@...kaller.appspotmail.com
Cc: linux-kernel@...r.kernel.org,
	syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [v9fs?] KMSAN: uninit-value in p9_client_rpc (2)

please test uv p9_client_rpc

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

diff --git a/net/9p/client.c b/net/9p/client.c
index e265a0ca6bdd..30e183b880d5 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -292,6 +292,7 @@ p9_tag_alloc(struct p9_client *c, int8_t type, uint t_size, uint r_size,
 	if (!req)
 		return ERR_PTR(-ENOMEM);
 
+	memset(req, 0, sizeof(req));
 	if (p9_fcall_init(c, &req->tc, alloc_tsize))
 		goto free_req;
 	if (p9_fcall_init(c, &req->rc, alloc_rsize))