diff options
Diffstat (limited to 'arch/powerpc/lib/error-inject.c')
-rw-r--r-- | arch/powerpc/lib/error-inject.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/powerpc/lib/error-inject.c b/arch/powerpc/lib/error-inject.c new file mode 100644 index 0000000000..e834079d2b --- /dev/null +++ b/arch/powerpc/lib/error-inject.c @@ -0,0 +1,16 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include <linux/error-injection.h> +#include <linux/kprobes.h> +#include <linux/uaccess.h> + +void override_function_with_return(struct pt_regs *regs) +{ + /* + * Emulate 'blr'. 'regs' represents the state on entry of a predefined + * function in the kernel/module, captured on a kprobe. We don't need + * to worry about 32-bit userspace on a 64-bit kernel. + */ + regs_set_return_ip(regs, regs->link); +} +NOKPROBE_SYMBOL(override_function_with_return); |