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Date: Sat, 21 Oct 2017 05:26:08 +0800
From: kbuild test robot <lkp@...el.com>
To: Eric Dumazet <eric.dumazet@...il.com>
Cc: kbuild-all@...org, David Miller <davem@...emloft.net>,
netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH v3 net] dccp/tcp: fix ireq->opt races
Hi Eric,
[auto build test WARNING on net/master]
url: https://github.com/0day-ci/linux/commits/Eric-Dumazet/dccp-tcp-fix-ireq-opt-races/20171021-034024
config: alpha-allmodconfig (attached as .config)
compiler: alpha-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=alpha
All warnings (new ones prefixed by >>):
In file included from arch/alpha/include/asm/atomic.h:6:0,
from include/linux/atomic.h:4,
from include/linux/rcupdate.h:38,
from net/ipv4/cipso_ipv4.c:40:
net/ipv4/cipso_ipv4.c: In function 'cipso_v4_req_setattr':
net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:47:15: note: in definition of macro 'xchg'
__typeof__(*(ptr)) _x_ = (x); \
^~~
>> arch/alpha/include/asm/cmpxchg.h:47:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:48:16: note: in definition of macro 'xchg'
(__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \
^~~
net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:48:31: note: in definition of macro 'xchg'
(__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \
^~~
net/ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:49:15: note: in definition of macro 'xchg'
sizeof(*(ptr))); \
^~~
net/ipv4/cipso_ipv4.c: In function 'cipso_v4_req_delattr':
net/ipv4/cipso_ipv4.c:2073:16: error: 'struct inet_request_sock' has no member named 'opt'
opt = req_inet->opt;
^~
net/ipv4/cipso_ipv4.c:2077:27: error: 'struct inet_request_sock' has no member named 'opt'
cipso_v4_delopt(&req_inet->opt);
^~
--
In file included from arch/alpha/include/asm/atomic.h:6:0,
from include/linux/atomic.h:4,
from include/linux/rcupdate.h:38,
from net//ipv4/cipso_ipv4.c:40:
net//ipv4/cipso_ipv4.c: In function 'cipso_v4_req_setattr':
net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:47:15: note: in definition of macro 'xchg'
__typeof__(*(ptr)) _x_ = (x); \
^~~
>> arch/alpha/include/asm/cmpxchg.h:47:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:48:16: note: in definition of macro 'xchg'
(__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \
^~~
net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:48:31: note: in definition of macro 'xchg'
(__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \
^~~
net//ipv4/cipso_ipv4.c:1954:22: error: 'struct inet_request_sock' has no member named 'opt'
opt = xchg(&req_inet->opt, opt);
^
arch/alpha/include/asm/cmpxchg.h:49:15: note: in definition of macro 'xchg'
sizeof(*(ptr))); \
^~~
net//ipv4/cipso_ipv4.c: In function 'cipso_v4_req_delattr':
net//ipv4/cipso_ipv4.c:2073:16: error: 'struct inet_request_sock' has no member named 'opt'
opt = req_inet->opt;
^~
net//ipv4/cipso_ipv4.c:2077:27: error: 'struct inet_request_sock' has no member named 'opt'
cipso_v4_delopt(&req_inet->opt);
^~
vim +47 arch/alpha/include/asm/cmpxchg.h
5ba840f9 Paul Gortmaker 2012-04-02 44
5ba840f9 Paul Gortmaker 2012-04-02 45 #define xchg(ptr, x) \
5ba840f9 Paul Gortmaker 2012-04-02 46 ({ \
5ba840f9 Paul Gortmaker 2012-04-02 @47 __typeof__(*(ptr)) _x_ = (x); \
5ba840f9 Paul Gortmaker 2012-04-02 48 (__typeof__(*(ptr))) __xchg((ptr), (unsigned long)_x_, \
5ba840f9 Paul Gortmaker 2012-04-02 49 sizeof(*(ptr))); \
5ba840f9 Paul Gortmaker 2012-04-02 50 })
5ba840f9 Paul Gortmaker 2012-04-02 51
:::::: The code at line 47 was first introduced by commit
:::::: 5ba840f9da1ff96e0c6e982608a9e80e35333cc5 alpha: fix build failures from system.h dismemberment
:::::: TO: Paul Gortmaker <paul.gortmaker@...driver.com>
:::::: CC: Paul Gortmaker <paul.gortmaker@...driver.com>
---
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