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| author | James Morris <jmorris@namei.org> | 2011-04-19 13:32:41 +0200 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2011-04-19 13:32:41 +0200 |
| commit | d4ab4e6a23f805abb8fc3cc34525eec3788aeca1 (patch) | |
| tree | eefd82c155bc27469a85667d759cd90facf4a6e3 /arch/arm/kernel/kprobes-decode.c | |
| parent | TOMOYO: Fix infinite loop bug when reading /sys/kernel/security/tomoyo/audit (diff) | |
| parent | Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dto... (diff) | |
| download | linux-d4ab4e6a23f805abb8fc3cc34525eec3788aeca1.tar.xz linux-d4ab4e6a23f805abb8fc3cc34525eec3788aeca1.zip | |
Merge branch 'master'; commit 'v2.6.39-rc3' into next
Diffstat (limited to 'arch/arm/kernel/kprobes-decode.c')
| -rw-r--r-- | arch/arm/kernel/kprobes-decode.c | 10 |
1 files changed, 6 insertions, 4 deletions
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) |