diff options
Diffstat (limited to 'arch/x86/lib/error-inject.c')
-rw-r--r-- | arch/x86/lib/error-inject.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/arch/x86/lib/error-inject.c b/arch/x86/lib/error-inject.c new file mode 100644 index 0000000..7b881d0 --- /dev/null +++ b/arch/x86/lib/error-inject.c @@ -0,0 +1,19 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include <linux/error-injection.h> +#include <linux/kprobes.h> + +asmlinkage void just_return_func(void); + +asm( + ".type just_return_func, @function\n" + "just_return_func:\n" + " ret\n" + ".size just_return_func, .-just_return_func\n" +); + +void override_function_with_return(struct pt_regs *regs) +{ + regs->ip = (unsigned long)&just_return_func; +} +NOKPROBE_SYMBOL(override_function_with_return); |