From fb7f045ace0624f1e59a7db8497e460bd54b1cbc Mon Sep 17 00:00:00 2001 From: David Engraf Date: Wed, 23 Mar 2011 11:35:42 +0000 Subject: [PATCH] sh: Fix ptrace hw_breakpoint handling Since commit 34d0b5af50a063cded842716633501b38ff815fb it is no longer possible to debug an application using singlestep. The old commit converted singlestep handling via ptrace to hw_breakpoints. The hw_breakpoint is disabled when an event is triggered and not re-enabled again. This patch re-enables the existing hw_breakpoint before the existing breakpoint is reused. Signed-off-by: David Engraf Cc: stable@kernel.org Signed-off-by: Paul Mundt --- arch/sh/kernel/ptrace_32.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c index b53664ef53e8..2130ca674e9b 100644 --- a/arch/sh/kernel/ptrace_32.c +++ b/arch/sh/kernel/ptrace_32.c @@ -101,6 +101,8 @@ static int set_single_step(struct task_struct *tsk, unsigned long addr) attr = bp->attr; attr.bp_addr = addr; + /* reenable breakpoint */ + attr.disabled = false; err = modify_user_hw_breakpoint(bp, &attr); if (unlikely(err)) return err; -- 2.39.2