X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=arch%2Farm%2Fkernel%2Fkprobes-decode.c;h=23891317dc4be73d083f497291525feefaf015c6;hb=bdfd6b7d761c7bb8bc93055dac5040ece7d58e10;hp=8f6ed43861f18c4f8b3b5ed79110af7261d9ef60;hpb=d454f39f3ff3ee5a818c271026081a48a537bd41;p=pandora-kernel.git

diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c
index 8f6ed43861f1..23891317dc4b 100644
--- a/arch/arm/kernel/kprobes-decode.c
+++ b/arch/arm/kernel/kprobes-decode.c
@@ -594,7 +594,8 @@ static void __kprobes emulate_ldr(struct kprobe *p, struct pt_regs *regs)
 	long cpsr = regs->ARM_cpsr;
 
 	fnr.dr = insnslot_llret_3arg_rflags(rnv, 0, rmv, cpsr, i_fn);
-	regs->uregs[rn] = fnr.r0;  /* Save Rn in case of writeback. */
+	if (rn != 15)
+		regs->uregs[rn] = fnr.r0;  /* Save Rn in case of writeback. */
 	rdv = fnr.r1;
 
 	if (rd == 15) {
@@ -622,10 +623,11 @@ static void __kprobes emulate_str(struct kprobe *p, struct pt_regs *regs)
 	long rdv = (rd == 15) ? iaddr + str_pc_offset : regs->uregs[rd];
 	long rnv = (rn == 15) ? iaddr +  8 : regs->uregs[rn];
 	long rmv = regs->uregs[rm];  /* rm/rmv may be invalid, don't care. */
+	long rnv_wb;
 
-	/* Save Rn in case of writeback. */
-	regs->uregs[rn] =
-		insnslot_3arg_rflags(rnv, rdv, rmv, regs->ARM_cpsr, i_fn);
+	rnv_wb = insnslot_3arg_rflags(rnv, rdv, rmv, regs->ARM_cpsr, i_fn);
+	if (rn != 15)
+		regs->uregs[rn] = rnv_wb;  /* Save Rn in case of writeback. */
 }
 
 static void __kprobes emulate_mrrc(struct kprobe *p, struct pt_regs *regs)