cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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error-inject.c (484B)

      1// SPDX-License-Identifier: GPL-2.0+
      2
      3#include <linux/error-injection.h>
      4#include <linux/kprobes.h>
      5#include <linux/uaccess.h>
      6
      7void override_function_with_return(struct pt_regs *regs)
      8{
      9	/*
     10	 * Emulate 'blr'. 'regs' represents the state on entry of a predefined
     11	 * function in the kernel/module, captured on a kprobe. We don't need
     12	 * to worry about 32-bit userspace on a 64-bit kernel.
     13	 */
     14	regs_set_return_ip(regs, regs->link);
     15}
     16NOKPROBE_SYMBOL(override_function_with_return);