From: Stefano Brivio <sbrivio@redhat.com>
To: passt-dev@passt.top
Subject: [PATCH 12/16] tcp_splice: Logically dead code, CWE-561
Date: Tue, 05 Apr 2022 19:05:10 +0200 [thread overview]
Message-ID: <20220405170514.2963773-13-sbrivio@redhat.com> (raw)
In-Reply-To: <20220405170514.2963773-1-sbrivio@redhat.com>
[-- Attachment #1: Type: text/plain, Size: 892 bytes --]
Reported by Coverity.
Signed-off-by: Stefano Brivio <sbrivio(a)redhat.com>
---
tcp_splice.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)
diff --git a/tcp_splice.c b/tcp_splice.c
index 84df8ed..7c19d99 100644
--- a/tcp_splice.c
+++ b/tcp_splice.c
@@ -139,9 +139,6 @@ static void tcp_splice_conn_epoll_events(uint16_t events,
{
*a = *b = 0;
- if (events & CLOSED)
- return;
-
if (events & ESTABLISHED) {
if (!(events & B_FIN_SENT))
*a = EPOLLIN | EPOLLRDHUP;
@@ -649,8 +646,8 @@ swap:
}
while (1) {
- int retry_write = 0, more = 0;
ssize_t readlen, to_write = 0, written;
+ int more = 0;
retry:
readlen = splice(from, NULL, pipes[1], NULL, c->tcp.pipe_size,
@@ -715,9 +712,6 @@ eintr:
if (never_read)
break;
- if (retry_write--)
- goto retry;
-
if (to == conn->a)
conn_event(c, conn, A_OUT_WAIT);
else
--
@@ -139,9 +139,6 @@ static void tcp_splice_conn_epoll_events(uint16_t events,
{
*a = *b = 0;
- if (events & CLOSED)
- return;
-
if (events & ESTABLISHED) {
if (!(events & B_FIN_SENT))
*a = EPOLLIN | EPOLLRDHUP;
@@ -649,8 +646,8 @@ swap:
}
while (1) {
- int retry_write = 0, more = 0;
ssize_t readlen, to_write = 0, written;
+ int more = 0;
retry:
readlen = splice(from, NULL, pipes[1], NULL, c->tcp.pipe_size,
@@ -715,9 +712,6 @@ eintr:
if (never_read)
break;
- if (retry_write--)
- goto retry;
-
if (to == conn->a)
conn_event(c, conn, A_OUT_WAIT);
else
--
2.35.1
next prev parent reply other threads:[~2022-04-05 17:05 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-04-05 17:04 [PATCH 00/16] Fix issues reported by Coverity Stefano Brivio
2022-04-05 17:04 ` [PATCH 01/16] treewide: Invalid type in argument to printf format specifier, CWE-686 Stefano Brivio
2022-04-05 17:05 ` [PATCH 02/16] passt: Ignoring number of bytes read, CWE-252 Stefano Brivio
2022-04-05 17:05 ` [PATCH 03/16] tcp: False "Untrusted loop bound" positive, CWE-606 Stefano Brivio
2022-04-05 17:05 ` [PATCH 04/16] treewide: Unchecked return value from library, CWE-252 Stefano Brivio
2022-04-05 17:05 ` [PATCH 05/16] tap: Resource leak, CWE-404 Stefano Brivio
2022-04-05 17:05 ` [PATCH 06/16] conf, packet: Operands don't affect result, CWE-569 Stefano Brivio
2022-04-05 17:05 ` [PATCH 07/16] passt: Improper use of negative value (CWE-394) Stefano Brivio
2022-04-05 17:05 ` [PATCH 08/16] treewide: Argument cannot be negative, CWE-687 Stefano Brivio
2022-04-05 17:05 ` [PATCH 09/16] conf: False "Assign instead of compare" positive, CWE-481 Stefano Brivio
2022-04-05 17:05 ` [PATCH 10/16] conf, tap: False "Buffer not null terminated" positives, CWE-170 Stefano Brivio
2022-04-05 17:05 ` [PATCH 11/16] tcp: Dereference null return value, CWE-476 Stefano Brivio
2022-04-05 17:05 ` Stefano Brivio [this message]
2022-04-05 17:05 ` [PATCH 13/16] tcp, tcp_splice: False "Negative array index read" positives, CWE-129 Stefano Brivio
2022-04-05 17:05 ` [PATCH 14/16] tcp: False "Out-of-bounds read" positive, CWE-125 Stefano Brivio
2022-04-05 17:05 ` [PATCH 15/16] udp: Out-of-bounds read, CWE-125 in udp_timer() Stefano Brivio
2022-04-05 17:05 ` [PATCH 16/16] arch: Pointer to local outside scope, CWE-562 Stefano Brivio
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