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SubjectRe: [PATCH v2 5/9] x86: bug: prevent gcc distortions
Hi Nadav,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[also build test ERROR on v4.17 next-20180604]
[cannot apply to tip/x86/core]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url: https://github.com/0day-ci/linux/commits/Nadav-Amit/x86-macrofying-inline-asm-for-better-compilation/20180605-124313
config: i386-tinyconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-16) 7.3.0
reproduce:
# save the attached .config to linux build tree
make ARCH=i386

All error/warnings (new ones prefixed by >>):

In file included from include/linux/bug.h:5:0,
from include/linux/crypto.h:23,
from arch/x86/kernel/asm-offsets.c:9:
include/linux/ktime.h: In function 'ktime_divns':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
>> include/linux/ktime.h:150:2: note: in expansion of macro 'BUG_ON'
BUG_ON(div < 0);
^~~~~~
include/linux/rhashtable.h: In function 'rhashtable_lookup_insert_fast':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
>> include/linux/rhashtable.h:936:2: note: in expansion of macro 'BUG_ON'
BUG_ON(ht->p.obj_hashfn);
^~~~~~
include/linux/rhashtable.h: In function 'rhashtable_lookup_get_insert_fast':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/rhashtable.h:962:2: note: in expansion of macro 'BUG_ON'
BUG_ON(ht->p.obj_hashfn);
^~~~~~
include/linux/rhashtable.h: In function 'rhashtable_lookup_insert_key':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/rhashtable.h:996:2: note: in expansion of macro 'BUG_ON'
BUG_ON(!ht->p.obj_hashfn || !key);
^~~~~~
include/linux/rhashtable.h: In function 'rhashtable_lookup_get_insert_key':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/rhashtable.h:1020:2: note: in expansion of macro 'BUG_ON'
BUG_ON(!ht->p.obj_hashfn || !key);
^~~~~~
include/linux/crypto.h: In function 'crypto_blkcipher_cast':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
>> include/linux/crypto.h:1118:2: note: in expansion of macro 'BUG_ON'
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
^~~~~~
include/linux/crypto.h: In function 'crypto_cipher_cast':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/crypto.h:1438:2: note: in expansion of macro 'BUG_ON'
BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
^~~~~~
include/linux/crypto.h: In function 'crypto_comp_cast':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/crypto.h:1603:2: note: in expansion of macro 'BUG_ON'
BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
^~~~~~
include/linux/quota.h: In function 'make_kqid':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
>> include/linux/quota.h:114:3: note: in expansion of macro 'BUG'
BUG();
^~~
include/linux/quota.h: In function 'make_kqid_invalid':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/linux/quota.h:141:3: note: in expansion of macro 'BUG'
BUG();
^~~
include/linux/fs.h: In function 'kill_block_super':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
>> include/linux/fs.h:2124:2: note: in expansion of macro 'BUG'
BUG();
^~~
include/linux/fs.h: In function 'break_deleg_wait':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/linux/fs.h:2371:2: note: in expansion of macro 'BUG'
BUG();
^~~
include/linux/seq_file.h: In function 'seq_get_buf':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
>> include/linux/seq_file.h:66:2: note: in expansion of macro 'BUG_ON'
BUG_ON(m->count > m->size);
^~~~~~
include/linux/seq_file.h: In function 'seq_commit':
>> arch/x86/include/asm/bug.h:31:17: error: invalid application of 'sizeof' to incomplete type 'struct bug_entry'
"i" (sizeof(struct bug_entry))); \
^
arch/x86/include/asm/bug.h:37:2: note: in expansion of macro '_BUG_FLAGS'
_BUG_FLAGS(ASM_UD2, 0); \
^~~~~~~~~~
include/asm-generic/bug.h:176:47: note: in expansion of macro 'BUG'
#define BUG_ON(condition) do { if (condition) BUG(); } while (0)
^~~
include/linux/seq_file.h:89:3: note: in expansion of macro 'BUG_ON'
BUG_ON(m->count + num > m->size);
^~~~~~
include/asm-generic/fixmap.h: In function 'virt_to_fix':

vim +31 arch/x86/include/asm/bug.h

9a93848f arch/x86/include/asm/bug.h Peter Zijlstra 2017-02-02 24
9a93848f arch/x86/include/asm/bug.h Peter Zijlstra 2017-02-02 25 #define _BUG_FLAGS(ins, flags) \
68fdc55c include/asm-x86/bug.h Thomas Gleixner 2007-10-17 26 do { \
6eca12b3 arch/x86/include/asm/bug.h Nadav Amit 2018-06-04 27 asm volatile("ASM_BUG ins=\"" ins "\" file=%c0 line=%c1 " \
6eca12b3 arch/x86/include/asm/bug.h Nadav Amit 2018-06-04 28 "flags=%c2 size=%c3" \
68fdc55c include/asm-x86/bug.h Thomas Gleixner 2007-10-17 29 : : "i" (__FILE__), "i" (__LINE__), \
9a93848f arch/x86/include/asm/bug.h Peter Zijlstra 2017-02-02 30 "i" (flags), \
68fdc55c include/asm-x86/bug.h Thomas Gleixner 2007-10-17 @31 "i" (sizeof(struct bug_entry))); \
68fdc55c include/asm-x86/bug.h Thomas Gleixner 2007-10-17 32 } while (0)
68fdc55c include/asm-x86/bug.h Thomas Gleixner 2007-10-17 33

:::::: The code at line 31 was first introduced by commit
:::::: 68fdc55c48fd2e8f4938a1e815216c25baf8a17e x86: unify include/asm/bug_32/64.h

:::::: TO: Thomas Gleixner <tglx@linutronix.de>
:::::: CC: Thomas Gleixner <tglx@inhelltoy.tec.linutronix.de>

---
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