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| author | Linus Walleij <linus.walleij@linaro.org> | 2020-05-27 17:15:52 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2020-05-27 17:15:52 +0300 |
| commit | ce1d966a302229a88bcb4398a5ca76d657b06848 (patch) | |
| tree | 812671d666fef8b5a955087cff5dc7b3cd555a35 /arch/x86/include/asm/stackprotector.h | |
| parent | f8af9113b1cf71cd21b0a027d38b06c15989c789 (diff) | |
| parent | 9cb1fd0efd195590b828b9b865421ad345a4a145 (diff) | |
| download | linux-ce1d966a302229a88bcb4398a5ca76d657b06848.tar.xz | |
Merge tag 'v5.7-rc7' into devel
Linux 5.7-rc7
Diffstat (limited to 'arch/x86/include/asm/stackprotector.h')
| -rw-r--r-- | arch/x86/include/asm/stackprotector.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/x86/include/asm/stackprotector.h b/arch/x86/include/asm/stackprotector.h index 91e29b6a86a5..9804a7957f4e 100644 --- a/arch/x86/include/asm/stackprotector.h +++ b/arch/x86/include/asm/stackprotector.h @@ -55,8 +55,13 @@ /* * Initialize the stackprotector canary value. * - * NOTE: this must only be called from functions that never return, + * NOTE: this must only be called from functions that never return * and it must always be inlined. + * + * In addition, it should be called from a compilation unit for which + * stack protector is disabled. Alternatively, the caller should not end + * with a function call which gets tail-call optimized as that would + * lead to checking a modified canary value. */ static __always_inline void boot_init_stack_canary(void) { |