[PATCH] powerpc: Fix single step emulation of 32bit overflowed branches
From: Michael Neuling <hidden>
Date: 2013-05-06 11:32:40
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Check truncate_if_32bit() on final write to nip. Signed-off-by: Michael Neuling <redacted>
diff --git a/arch/powerpc/lib/sstep.c b/arch/powerpc/lib/sstep.c
index e15c521..99c7fc1 100644
--- a/arch/powerpc/lib/sstep.c
+++ b/arch/powerpc/lib/sstep.c@@ -580,7 +580,7 @@ int __kprobes emulate_step(struct pt_regs *regs, unsigned int instr) if (instr & 1) regs->link = regs->nip; if (branch_taken(instr, regs)) - regs->nip = imm; + regs->nip = truncate_if_32bit(regs->msr, imm); return 1; #ifdef CONFIG_PPC64 case 17: /* sc */