From 7eb9ba5ed312ec6ed9d22259c5da1acb7cf4bd29 Mon Sep 17 00:00:00 2001 From: Ananth N Mavinakayanahalli Date: Fri, 8 Jun 2012 15:02:57 +0530 Subject: uprobes: Pass probed vaddr to arch_uprobe_analyze_insn() On RISC architectures like powerpc, instructions are fixed size. Instruction analysis on such platforms is just a matter of (insn % 4). Pass the vaddr at which the uprobe is to be inserted so that arch_uprobe_analyze_insn() can flag misaligned registration requests. Signed-off-by: Ananth N Mavinakaynahalli Cc: michael@ellerman.id.au Cc: antonb@thinktux.localdomain Cc: Paul Mackerras Cc: benh@kernel.crashing.org Cc: peterz@infradead.org Cc: Srikar Dronamraju Cc: Jim Keniston Cc: oleg@redhat.com Cc: linuxppc-dev@lists.ozlabs.org Link: http://lkml.kernel.org/r/20120608093257.GG13409@in.ibm.com Signed-off-by: Ingo Molnar --- arch/x86/kernel/uprobes.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'arch/x86/kernel/uprobes.c') diff --git a/arch/x86/kernel/uprobes.c b/arch/x86/kernel/uprobes.c index dc4e910a7d96..36fd42091fa7 100644 --- a/arch/x86/kernel/uprobes.c +++ b/arch/x86/kernel/uprobes.c @@ -409,9 +409,10 @@ static int validate_insn_bits(struct arch_uprobe *auprobe, struct mm_struct *mm, * arch_uprobe_analyze_insn - instruction analysis including validity and fixups. * @mm: the probed address space. * @arch_uprobe: the probepoint information. + * @addr: virtual address at which to install the probepoint * Return 0 on success or a -ve number on error. */ -int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm) +int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long addr) { int ret; struct insn insn; -- cgit v1.2.3