From 8f79ff0cb5330a92032c30ff586745d3016b34ca Mon Sep 17 00:00:00 2001 From: Nicolas Pitre Date: Wed, 23 Apr 2008 18:44:15 -0400 Subject: kprobes/arm: fix cache flush address for instruction stub It is more useful to flush the cache with the actual buffer address rather than the address containing a pointer to the buffer. Signed-off-by: Nicolas Pitre Acked-by: Lennert Buytenhek --- arch/arm/kernel/kprobes.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/kprobes.c b/arch/arm/kernel/kprobes.c index 13e371aad879..5593dd207216 100644 --- a/arch/arm/kernel/kprobes.c +++ b/arch/arm/kernel/kprobes.c @@ -66,7 +66,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) return -ENOMEM; for (is = 0; is < MAX_INSN_SIZE; ++is) p->ainsn.insn[is] = tmp_insn[is]; - flush_insns(&p->ainsn.insn, MAX_INSN_SIZE); + flush_insns(p->ainsn.insn, MAX_INSN_SIZE); break; case INSN_GOOD_NO_SLOT: /* instruction doesn't need insn slot */ -- cgit v1.2.2 From a3fd133c24e16d430ba21f3d9f5c0b8faeeb37fe Mon Sep 17 00:00:00 2001 From: Lennert Buytenhek Date: Thu, 24 Apr 2008 01:31:45 -0400 Subject: kprobes/arm: fix decoding of arithmetic immediate instructions The ARM kprobes arithmetic immediate instruction decoder (space_cccc_001x()) was accidentally zero'ing out not only the Rn and Rd arguments, but the lower nibble of the immediate argument as well -- this patch fixes this. Signed-off-by: Lennert Buytenhek Acked-by: Nicolas Pitre --- arch/arm/kernel/kprobes-decode.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/arm/kernel') diff --git a/arch/arm/kernel/kprobes-decode.c b/arch/arm/kernel/kprobes-decode.c index d51bc8b60557..b4565bb133c1 100644 --- a/arch/arm/kernel/kprobes-decode.c +++ b/arch/arm/kernel/kprobes-decode.c @@ -1176,7 +1176,7 @@ space_cccc_001x(kprobe_opcode_t insn, struct arch_specific_insn *asi) * *S (bit 20) updates condition codes * ADC/SBC/RSC reads the C flag */ - insn &= 0xfff00ff0; /* Rn = r0, Rd = r0 */ + insn &= 0xfff00fff; /* Rn = r0, Rd = r0 */ asi->insn[0] = insn; asi->insn_handler = (insn & (1 << 20)) ? /* S-bit */ emulate_alu_imm_rwflags : emulate_alu_imm_rflags; -- cgit v1.2.2