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qemu-6.2.0 compilation init

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add net-dump.c-Suppress-spurious-compiler-warning.patch
This commit is contained in:
liuxiangdong 2022-02-08 21:11:45 +08:00 committed by yezengruan
parent 787ea25064
commit db2c567699
2 changed files with 57 additions and 1 deletions
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51
net-dump.c-Suppress-spurious-compiler-warning.patch Normal file
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@ -0,0 +1,51 @@
From 08801d190afd21f7d3db9a2cdce2b1528903ac2c Mon Sep 17 00:00:00 2001
From: liuxiangdong <liuxiangdong5@huawei.com>
Date: Tue, 8 Feb 2022 15:10:25 +0800
Subject: [PATCH] net/dump.c: Suppress spurious compiler warning
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Compiling with gcc version 11.2.0 (Ubuntu 11.2.0-13ubuntu1) results in
a (spurious) warning:
In function ‘dump_receive_iov’,
inlined from ‘filter_dump_receive_iov’ at ../net/dump.c:157:5:
../net/dump.c:89:9: error: ‘writev’ specified size 18446744073709551600
exceeds maximum object size 9223372036854775807 [-Werror=stringop-overflow=]
89 | if (writev(s->fd, dumpiov, cnt + 1) != sizeof(hdr) + caplen) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/ptomsich/qemu/include/qemu/osdep.h:108,
from ../net/dump.c:25:
../net/dump.c: In function ‘filter_dump_receive_iov’:
/usr/include/x86_64-linux-gnu/sys/uio.h:52:16: note: in a call to function
‘writev’ declared with attribute ‘read_only (2, 3)’
52 | extern ssize_t writev (int __fd, const struct iovec *__iovec, int
__count)
| ^~~~~~
cc1: all warnings being treated as errors
This change helps that version of GCC to understand what is going on
and suppresses this warning.
Signed-off-by: Philipp Tomsich <philipp.toms...@vrull.eu>
---
net/dump.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/dump.c b/net/dump.c
index a07ba62401..c32d3bf4e6 100644
--- a/net/dump.c
+++ b/net/dump.c
@@ -86,7 +86,7 @@ static ssize_t dump_receive_iov(DumpState *s, const struct iovec *iov, int cnt)
dumpiov[0].iov_len = sizeof(hdr);
cnt = iov_copy(&dumpiov[1], cnt, iov, cnt, 0, caplen);
- if (writev(s->fd, dumpiov, cnt + 1) != sizeof(hdr) + caplen) {
+ if (writev(s->fd, &dumpiov[0], cnt + 1) != sizeof(hdr) + caplen) {
error_report("network dump write error - stopping dump");
close(s->fd);
s->fd = -1;
--
2.27.0

7
qemu.spec
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@ -1,6 +1,6 @@
Name: qemu
Version: 6.2.0
Release: 1
Release: 2
Epoch: 2
Summary: QEMU is a generic and open source machine emulator and virtualizer
License: GPLv2 and BSD and MIT and CC-BY-SA-4.0
@ -10,6 +10,8 @@ Source1: 80-kvm.rules
Source2: 99-qemu-guest-agent.rules
Source3: bridge.conf
Patch0001: net-dump.c-Suppress-spurious-compiler-warning.patch
BuildRequires: flex
BuildRequires: gcc
BuildRequires: bison
@ -451,5 +453,8 @@ getent passwd qemu >/dev/null || \
%endif
%changelog
* Tue Feb 8 2022 Xiangdong Liu <liuxiangdong5@huawei.com>
- net/dump.c: Suppress spurious compiler warning
* Thu Jan 27 2022 Xiangdong Liu <liuxiangdong5@huawei.com>
- Package init