From: Herbert Xu <herbert@gondor.apana.org.au>
Date: Tue, 6 Sep 2005 01:55:48 +0000 (-0700)
Subject: [TCP]: Fix TCP_OFF() bug check introduced by previous change.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=fb5f5e6e0cebd574be737334671d1aa8f170d5f3;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[TCP]: Fix TCP_OFF() bug check introduced by previous change.

The TCP_OFF assignment at the bottom of that if block can indeed set
TCP_OFF without setting TCP_PAGE.  Since there is not much to be
gained from avoiding this situation, we might as well just zap the
offset.  The following patch should fix it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cbcc9fc47783..f3f0013a9580 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -769,10 +769,10 @@ new_segment:
 					if (off == PAGE_SIZE) {
 						put_page(page);
 						TCP_PAGE(sk) = page = NULL;
-						TCP_OFF(sk) = off = 0;
+						off = 0;
 					}
 				} else
-					BUG_ON(off);
+					off = 0;
 
 				if (copy > PAGE_SIZE - off)
 					copy = PAGE_SIZE - off;