diff options
| author | Arnd Bergmann <[email protected]> | 2020-12-11 13:36:38 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2020-12-11 14:02:14 -0800 |
| commit | 14dc3983b5dff513a90bd5a8cc90acaf7867c3d0 (patch) | |
| tree | e48f4ed8cfdf4bb4cf62ddb46eeb59d5f26194bb | |
| parent | 84edc2eff82730d45ab513ecec49cb63beb973c9 (diff) | |
kbuild: avoid static_assert for genksyms
genksyms does not know or care about the _Static_assert() built-in, and
sometimes falls back to ignoring the later symbols, which causes
undefined behavior such as
WARNING: modpost: EXPORT symbol "ethtool_set_ethtool_phy_ops" [vmlinux] version generation failed, symbol will not be versioned.
ld: net/ethtool/common.o: relocation R_AARCH64_ABS32 against `__crc_ethtool_set_ethtool_phy_ops' can not be used when making a shared object
net/ethtool/common.o:(_ftrace_annotated_branch+0x0): dangerous relocation: unsupported relocation
Redefine static_assert for genksyms to avoid that.
Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnd Bergmann <[email protected]>
Suggested-by: Ard Biesheuvel <[email protected]>
Cc: Masahiro Yamada <[email protected]>
Cc: Michal Marek <[email protected]>
Cc: Kees Cook <[email protected]>
Cc: Rikard Falkeborn <[email protected]>
Cc: Marco Elver <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | include/linux/build_bug.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/build_bug.h b/include/linux/build_bug.h index e3a0be2c90ad..7bb66e15b481 100644 --- a/include/linux/build_bug.h +++ b/include/linux/build_bug.h @@ -77,4 +77,9 @@ #define static_assert(expr, ...) __static_assert(expr, ##__VA_ARGS__, #expr) #define __static_assert(expr, msg, ...) _Static_assert(expr, msg) +#ifdef __GENKSYMS__ +/* genksyms gets confused by _Static_assert */ +#define _Static_assert(expr, ...) +#endif + #endif /* _LINUX_BUILD_BUG_H */ |