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| author | Justin Stitt <justinstitt@google.com> | 2022-07-21 14:57:06 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2022-07-27 12:16:17 -0700 |
| commit | b4909252da9be56fe1e0a23c2c1908c5630525fa (patch) | |
| tree | 92bed92d7a643bc739c9f23376b54d10eb4f6a26 /drivers/misc | |
| parent | c09327d5673e5fb3695e41d2c2f05b907abb8996 (diff) | |
| download | lwn-b4909252da9be56fe1e0a23c2c1908c5630525fa.tar.gz lwn-b4909252da9be56fe1e0a23c2c1908c5630525fa.zip | |
drivers: lkdtm: fix clang -Wformat warning
When building with Clang we encounter the following warning
(ARCH=hexagon + CONFIG_FRAME_WARN=0):
| ../drivers/misc/lkdtm/bugs.c:107:3: error: format specifies type
| 'unsigned long' but the argument has type 'int' [-Werror,-Wformat]
| REC_STACK_SIZE, recur_count);
| ^~~~~~~~~~~~~~
Cast REC_STACK_SIZE to `unsigned long` to match format specifier `%lu`
as well as maintain symmetry with `#define REC_STACK_SIZE
(_AC(CONFIG_FRAME_WARN, UL) / 2)`.
Link: https://github.com/ClangBuiltLinux/linux/issues/378
Reported-by: Nathan Chancellor <nathan@kernel.org>
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Acked-by: Kees Cook <keescook@chromium.org>
Fixes: 24cccab42c419 ("lkdtm/bugs: Adjust recursion test to avoid elision")
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220721215706.4153027-1-justinstitt@google.com
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/lkdtm/bugs.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/lkdtm/bugs.c b/drivers/misc/lkdtm/bugs.c index 009239ad1d8a..48821f4c2b21 100644 --- a/drivers/misc/lkdtm/bugs.c +++ b/drivers/misc/lkdtm/bugs.c @@ -29,7 +29,7 @@ struct lkdtm_list { #if defined(CONFIG_FRAME_WARN) && (CONFIG_FRAME_WARN > 0) #define REC_STACK_SIZE (_AC(CONFIG_FRAME_WARN, UL) / 2) #else -#define REC_STACK_SIZE (THREAD_SIZE / 8) +#define REC_STACK_SIZE (THREAD_SIZE / 8UL) #endif #define REC_NUM_DEFAULT ((THREAD_SIZE / REC_STACK_SIZE) * 2) |