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Date: Thu, 11 Aug 2016 05:54:04 +0800
From: kbuild test robot <lkp@...el.com>
To: Hadar Hen Zion <hadarh@...lanox.com>
Cc: kbuild-all@...org, "David S. Miller" <davem@...emloft.net>,
netdev@...r.kernel.org, Jiri Pirko <jiri@...lanox.com>,
Tom Herbert <tom@...bertland.com>,
Or Gerlitz <ogerlitz@...lanox.com>,
Amir Vadai <amirv@...lanox.com>,
Hadar Hen Zion <hadarh@...lanox.com>
Subject: Re: [PATCH net-next 2/4] flow_dissector: Get vlan priority in
addition to vlan id
Hi Hadar,
[auto build test ERROR on net-next/master]
url: https://github.com/0day-ci/linux/commits/Hadar-Hen-Zion/flow_dissector-Get-vlan-info-from-skb-vlan_tci-instead-of-skb-data/20160811-042500
config: m68k-sun3_defconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 4.9.0
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=m68k
All error/warnings (new ones prefixed by >>):
In file included from include/linux/linkage.h:4:0,
from include/linux/kernel.h:6,
from net/core/flow_dissector.c:1:
In function 'flow_keys_hash_length.isra.3',
inlined from 'flow_hash_from_keys' at net/core/flow_dissector.c:599:9:
>> include/linux/compiler.h:491:38: error: call to '__compiletime_assert_512' declared with attribute error: BUILD_BUG_ON failed: (sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/compiler.h:474:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
include/linux/compiler.h:491:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/bug.h:75:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
>> net/core/flow_dissector.c:512:2: note: in expansion of macro 'BUILD_BUG_ON'
BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
^
In function 'flow_keys_hash_length.isra.3',
inlined from '__skb_get_hash' at net/core/flow_dissector.c:599:9:
>> include/linux/compiler.h:491:38: error: call to '__compiletime_assert_512' declared with attribute error: BUILD_BUG_ON failed: (sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/compiler.h:474:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
include/linux/compiler.h:491:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/bug.h:75:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
>> net/core/flow_dissector.c:512:2: note: in expansion of macro 'BUILD_BUG_ON'
BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
^
In function 'flow_keys_hash_length.isra.3',
inlined from 'skb_get_hash_perturb' at net/core/flow_dissector.c:599:9:
>> include/linux/compiler.h:491:38: error: call to '__compiletime_assert_512' declared with attribute error: BUILD_BUG_ON failed: (sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/compiler.h:474:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
include/linux/compiler.h:491:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/bug.h:75:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
>> net/core/flow_dissector.c:512:2: note: in expansion of macro 'BUILD_BUG_ON'
BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
^
In function 'flow_keys_hash_length.isra.3',
inlined from '__skb_get_hash_symmetric' at net/core/flow_dissector.c:599:9:
>> include/linux/compiler.h:491:38: error: call to '__compiletime_assert_512' declared with attribute error: BUILD_BUG_ON failed: (sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32)
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/compiler.h:474:4: note: in definition of macro '__compiletime_assert'
prefix ## suffix(); \
^
include/linux/compiler.h:491:2: note: in expansion of macro '_compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __LINE__)
^
include/linux/bug.h:51:37: note: in expansion of macro 'compiletime_assert'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
^
include/linux/bug.h:75:2: note: in expansion of macro 'BUILD_BUG_ON_MSG'
BUILD_BUG_ON_MSG(condition, "BUILD_BUG_ON failed: " #condition)
^
>> net/core/flow_dissector.c:512:2: note: in expansion of macro 'BUILD_BUG_ON'
BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
^
vim +/BUILD_BUG_ON +512 net/core/flow_dissector.c
20a17bf6 David S. Miller 2015-09-01 496 u32 keyval)
42aecaa9 Tom Herbert 2015-06-04 497 {
42aecaa9 Tom Herbert 2015-06-04 498 return jhash2(words, length, keyval);
42aecaa9 Tom Herbert 2015-06-04 499 }
42aecaa9 Tom Herbert 2015-06-04 500
20a17bf6 David S. Miller 2015-09-01 501 static inline const u32 *flow_keys_hash_start(const struct flow_keys *flow)
66415cf8 Hannes Frederic Sowa 2013-10-23 502 {
20a17bf6 David S. Miller 2015-09-01 503 const void *p = flow;
20a17bf6 David S. Miller 2015-09-01 504
42aecaa9 Tom Herbert 2015-06-04 505 BUILD_BUG_ON(FLOW_KEYS_HASH_OFFSET % sizeof(u32));
20a17bf6 David S. Miller 2015-09-01 506 return (const u32 *)(p + FLOW_KEYS_HASH_OFFSET);
42aecaa9 Tom Herbert 2015-06-04 507 }
42aecaa9 Tom Herbert 2015-06-04 508
20a17bf6 David S. Miller 2015-09-01 509 static inline size_t flow_keys_hash_length(const struct flow_keys *flow)
42aecaa9 Tom Herbert 2015-06-04 510 {
c3f83241 Tom Herbert 2015-06-04 511 size_t diff = FLOW_KEYS_HASH_OFFSET + sizeof(flow->addrs);
42aecaa9 Tom Herbert 2015-06-04 @512 BUILD_BUG_ON((sizeof(*flow) - FLOW_KEYS_HASH_OFFSET) % sizeof(u32));
c3f83241 Tom Herbert 2015-06-04 513 BUILD_BUG_ON(offsetof(typeof(*flow), addrs) !=
c3f83241 Tom Herbert 2015-06-04 514 sizeof(*flow) - sizeof(flow->addrs));
c3f83241 Tom Herbert 2015-06-04 515
c3f83241 Tom Herbert 2015-06-04 516 switch (flow->control.addr_type) {
c3f83241 Tom Herbert 2015-06-04 517 case FLOW_DISSECTOR_KEY_IPV4_ADDRS:
c3f83241 Tom Herbert 2015-06-04 518 diff -= sizeof(flow->addrs.v4addrs);
c3f83241 Tom Herbert 2015-06-04 519 break;
c3f83241 Tom Herbert 2015-06-04 520 case FLOW_DISSECTOR_KEY_IPV6_ADDRS:
:::::: The code at line 512 was first introduced by commit
:::::: 42aecaa9bb2bd57eb8d61b4565cee5d3640863fb net: Get skb hash over flow_keys structure
:::::: TO: Tom Herbert <tom@...bertland.com>
:::::: CC: David S. Miller <davem@...emloft.net>
---
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