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Date: Sat, 21 Oct 2017 08:36:56 +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: powerpc-ppc6xx_defconfig (attached as .config)
compiler: powerpc-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=powerpc
All warnings (new ones prefixed by >>):
In file included from arch/powerpc/include/asm/atomic.h:10:0,
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/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed'
__typeof__(*(ptr)) _x_ = (x); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
>> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
>> include/linux/atomic.h:65:9: note: in expansion of macro 'xchg_relaxed'
typeof(op##_relaxed(args)) __ret; \
^~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed'
(unsigned long)_x_, sizeof(*(ptr))); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed'
__typeof__(*(ptr)) _x_ = (x); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
>> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
include/linux/atomic.h:67:10: note: in expansion of macro 'xchg_relaxed'
__ret = op##_relaxed(args); \
^~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed'
(unsigned long)_x_, sizeof(*(ptr))); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net/ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
net/ipv4/cipso_ipv4.c:1954:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
opt = xchg(&req_inet->opt, opt);
^
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/powerpc/include/asm/atomic.h:10:0,
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/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed'
__typeof__(*(ptr)) _x_ = (x); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
>> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
>> include/linux/atomic.h:65:9: note: in expansion of macro 'xchg_relaxed'
typeof(op##_relaxed(args)) __ret; \
^~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed'
(unsigned long)_x_, sizeof(*(ptr))); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:203:15: note: in definition of macro 'xchg_relaxed'
__typeof__(*(ptr)) _x_ = (x); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
>> arch/powerpc/include/asm/cmpxchg.h:203:27: warning: initialization makes integer from pointer without a cast [-Wint-conversion]
__typeof__(*(ptr)) _x_ = (x); \
^
include/linux/atomic.h:67:10: note: in expansion of macro 'xchg_relaxed'
__ret = op##_relaxed(args); \
^~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:16: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:204:39: note: in definition of macro 'xchg_relaxed'
(__typeof__(*(ptr))) __xchg_relaxed((ptr), \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
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/powerpc/include/asm/cmpxchg.h:205:33: note: in definition of macro 'xchg_relaxed'
(unsigned long)_x_, sizeof(*(ptr))); \
^~~
include/linux/atomic.h:517:22: note: in expansion of macro '__atomic_op_fence'
#define xchg(...) __atomic_op_fence(xchg, __VA_ARGS__)
^~~~~~~~~~~~~~~~~
net//ipv4/cipso_ipv4.c:1954:8: note: in expansion of macro 'xchg'
opt = xchg(&req_inet->opt, opt);
^~~~
net//ipv4/cipso_ipv4.c:1954:6: warning: assignment makes pointer from integer without a cast [-Wint-conversion]
opt = xchg(&req_inet->opt, opt);
^
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 +203 arch/powerpc/include/asm/cmpxchg.h
ae3a197e David Howells 2012-03-28 175
ae3a197e David Howells 2012-03-28 176 static __always_inline unsigned long
26760fc1 Boqun Feng 2015-12-15 177 __xchg_relaxed(void *ptr, unsigned long x, unsigned int size)
ae3a197e David Howells 2012-03-28 178 {
ae3a197e David Howells 2012-03-28 179 switch (size) {
d0563a12 Pan Xinhui 2016-04-27 180 case 1:
d0563a12 Pan Xinhui 2016-04-27 181 return __xchg_u8_relaxed(ptr, x);
d0563a12 Pan Xinhui 2016-04-27 182 case 2:
d0563a12 Pan Xinhui 2016-04-27 183 return __xchg_u16_relaxed(ptr, x);
ae3a197e David Howells 2012-03-28 184 case 4:
26760fc1 Boqun Feng 2015-12-15 185 return __xchg_u32_relaxed(ptr, x);
ae3a197e David Howells 2012-03-28 186 #ifdef CONFIG_PPC64
ae3a197e David Howells 2012-03-28 187 case 8:
26760fc1 Boqun Feng 2015-12-15 188 return __xchg_u64_relaxed(ptr, x);
ae3a197e David Howells 2012-03-28 189 #endif
ae3a197e David Howells 2012-03-28 190 }
10d8b148 pan xinhui 2016-02-23 191 BUILD_BUG_ON_MSG(1, "Unsupported size for __xchg_local");
ae3a197e David Howells 2012-03-28 192 return x;
ae3a197e David Howells 2012-03-28 193 }
26760fc1 Boqun Feng 2015-12-15 194 #define xchg_local(ptr,x) \
ae3a197e David Howells 2012-03-28 195 ({ \
ae3a197e David Howells 2012-03-28 196 __typeof__(*(ptr)) _x_ = (x); \
26760fc1 Boqun Feng 2015-12-15 197 (__typeof__(*(ptr))) __xchg_local((ptr), \
26760fc1 Boqun Feng 2015-12-15 198 (unsigned long)_x_, sizeof(*(ptr))); \
ae3a197e David Howells 2012-03-28 199 })
ae3a197e David Howells 2012-03-28 200
26760fc1 Boqun Feng 2015-12-15 201 #define xchg_relaxed(ptr, x) \
ae3a197e David Howells 2012-03-28 202 ({ \
ae3a197e David Howells 2012-03-28 @203 __typeof__(*(ptr)) _x_ = (x); \
26760fc1 Boqun Feng 2015-12-15 204 (__typeof__(*(ptr))) __xchg_relaxed((ptr), \
ae3a197e David Howells 2012-03-28 205 (unsigned long)_x_, sizeof(*(ptr))); \
ae3a197e David Howells 2012-03-28 206 })
ae3a197e David Howells 2012-03-28 207 /*
ae3a197e David Howells 2012-03-28 208 * Compare and exchange - if *p == old, set it to new,
ae3a197e David Howells 2012-03-28 209 * and return the old value of *p.
ae3a197e David Howells 2012-03-28 210 */
ae3a197e David Howells 2012-03-28 211
:::::: The code at line 203 was first introduced by commit
:::::: ae3a197e3d0bfe3f4bf1693723e82dc018c096f3 Disintegrate asm/system.h for PowerPC
:::::: TO: David Howells <dhowells@...hat.com>
:::::: CC: David Howells <dhowells@...hat.com>
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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