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Message-ID: <8db45d00902da22ae25aa16a0c28bb41002fc039.1697486714.git.nabijaczleweli@nabijaczleweli.xyz>
Date: Mon, 16 Oct 2023 22:35:39 +0200
From:
Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
Cc: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Kuniyuki Iwashima <kuniyu@...zon.com>,
David Howells <dhowells@...hat.com>, Alexander Mikhalitsyn <alexander@...alicyn.com>,
Kirill Tkhai <tkhai@...ru>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 02/11] af_unix: unix_stream_splice_read: always request
MSG_DONTWAIT
Otherwise we risk sleeping with the pipe locked for indeterminate
lengths of time.
Link: https://lore.kernel.org/linux-fsdevel/qk6hjuam54khlaikf2ssom6custxf5is2ekkaequf4hvode3ls@zgf7j5j4ubvw/t/#u
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@...ijaczleweli.xyz>
---
net/unix/af_unix.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 3e8a04a13668..9489b9bda753 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -2889,15 +2889,12 @@ static ssize_t unix_stream_splice_read(struct socket *sock, loff_t *ppos,
.pipe = pipe,
.size = size,
.splice_flags = flags,
+ .flags = MSG_DONTWAIT,
};
if (unlikely(*ppos))
return -ESPIPE;
- if (sock->file->f_flags & O_NONBLOCK ||
- flags & SPLICE_F_NONBLOCK)
- state.flags = MSG_DONTWAIT;
-
return unix_stream_read_generic(&state, false);
}
--
2.39.2
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