mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-09-05 02:19:51 +00:00
![Ilya Leoshkevich](/assets/img/avatar_default.png)
This kernel feature is required for enabling BPF_KPROBE_OVERRIDE. Define override_function_with_return() and regs_set_return_value() functions, and fix compile errors in syscall_wrapper.h. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
14 lines
365 B
C
14 lines
365 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
#include <asm/ptrace.h>
|
|
#include <linux/error-injection.h>
|
|
#include <linux/kprobes.h>
|
|
|
|
void override_function_with_return(struct pt_regs *regs)
|
|
{
|
|
/*
|
|
* Emulate 'br 14'. 'regs' is captured by kprobes on entry to some
|
|
* kernel function.
|
|
*/
|
|
regs->psw.addr = regs->gprs[14];
|
|
}
|
|
NOKPROBE_SYMBOL(override_function_with_return);
|