Commit 936cf251 authored Dec 09, 2009 by David S. Miller

sparc: Validate that kprobe address is 4-byte aligned.



Otherwise it isn't a valid instruction address.

This is the sparc equivalent of commit
b46b3d70 (kprobes: Checks probe
address is instruction boudary on x86)

Signed-off-by: David S. Miller <davem@davemloft.net>

parent 08a036d5

arch/sparc/kernel/kprobes.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -46,6 +46,9 @@ struct kretprobe_blackpoint kretprobe_blacklist[] = {{NULL, NULL}};

		int __kprobes arch_prepare_kprobe(struct kprobe *p)
		{
		if ((unsigned long) p->addr & 0x3UL)
		return -EILSEQ;

		p->ainsn.insn[0] = *p->addr;
		flushi(&p->ainsn.insn[0]);