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| author | Ahmad Fatoum <a.fatoum@pengutronix.de> | 2024-01-03 11:17:47 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2024-01-11 16:16:58 +0100 |
| commit | c35c352679b729d776df41ec14c0e1177e44db3e (patch) | |
| tree | e84267471178450948de9ba97e43ccf255f0c0ae /include/linux | |
| parent | 17e1c100e8f2ce385a5dba58583d69736979df0c (diff) | |
| download | barebox-c35c352679b729d776df41ec14c0e1177e44db3e.tar.gz barebox-c35c352679b729d776df41ec14c0e1177e44db3e.tar.xz | |
compiler: define __ll_elem for linker list elements
When built with clang + AddressSanitizer, global variables end up with
a redzone that breaks linker list elements.
The __no_sanitize_address attribute prevents these redzones, but GCC
isn't happy about applying it to anything but functions. Therefore
define a __ll_elem macro for defining linker list elements that takes
care to avoid these redzones when building with clang.
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Link: https://lore.barebox.org/20240103101748.2629927-2-a.fatoum@pengutronix.de
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/compiler_types.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 9ef8115a39..d925b3da29 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -274,6 +274,12 @@ struct ftrace_likely_data { #define __cold __attribute__((cold)) #define __section(S) __attribute__((__section__(#S))) +#ifdef __clang__ +#define __ll_elem(S) __section(S) __used __no_sanitize_address +#else +#define __ll_elem(S) __section(S) __used +#endif + #ifdef CONFIG_ENABLE_MUST_CHECK #define __must_check __attribute__((warn_unused_result)) |