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Message-ID: <2b5a634f5fe1a89d42a7a4f91316f888b02ca576f.1697486714.git.nabijaczleweli@nabijaczleweli.xyz>
Date: Thu, 14 Dec 2023 19:45:09 +0100
From:
Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
Cc: Jens Axboe <axboe@...nel.dk>, Christian Brauner <brauner@...nel.org>,
Alexander Viro <viro@...iv.linux.org.uk>, linux-fsdevel@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
David Howells <dhowells@...hat.com>, Shigeru Yoshida <syoshida@...hat.com>,
Kuniyuki Iwashima <kuniyu@...zon.com>, Cong Wang <cong.wang@...edance.com>, netdev@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH RERESEND 07/11] kcm: kcm_splice_read: always request
MSG_DONTWAIT
Otherwise we risk sleeping with the pipe locked for indeterminate
lengths of time.
Also: don't pass the SPLICE_F_*-style flags argument to
skb_recv_datagram(), which expects MSG_*-style flags.
This fixes SPLICE_F_NONBLOCK not having worked.
Link: https://lore.kernel.org/linux-fsdevel/qk6hjuam54khlaikf2ssom6custxf5is2ekkaequf4hvode3ls@zgf7j5j4ubvw/t/#u
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
---
net/kcm/kcmsock.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index dd1d8ffd5f59..de70156869e6 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -1028,7 +1028,7 @@ static ssize_t kcm_splice_read(struct socket *sock, loff_t *ppos,
/* Only support splice for SOCKSEQPACKET */
- skb = skb_recv_datagram(sk, flags, &err);
+ skb = skb_recv_datagram(sk, MSG_DONTWAIT, &err);
if (!skb)
goto err_out;
--
2.39.2
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