[PATCH] powerpc/code-patching: Return error on patch_branch() out-of-range failure
From: Christophe Leroy <hidden>
Date: 2021-09-03 08:23:20
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Do not silentely ignore a failure of create_branch() in patch_branch(). Return -ERANGE. Signed-off-by: Christophe Leroy <redacted> --- arch/powerpc/lib/code-patching.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/lib/code-patching.c b/arch/powerpc/lib/code-patching.c
index f9a3019e37b4..0bc9cc0416b8 100644
--- a/arch/powerpc/lib/code-patching.c
+++ b/arch/powerpc/lib/code-patching.c@@ -202,7 +202,9 @@ int patch_branch(u32 *addr, unsigned long target, int flags) { struct ppc_inst instr; - create_branch(&instr, addr, target, flags); + if (create_branch(&instr, addr, target, flags)) + return -ERANGE; + return patch_instruction(addr, instr); }
--
2.25.0