commit: fb7f045ace0624f1e59a7db8497e460bd54b1cbc From: David Engraf <[email protected]> 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 <[email protected]> Cc: [email protected] Signed-off-by: Paul Mundt <[email protected]> --- arch/sh/kernel/ptrace_32.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/arch/sh/kernel/ptrace_32.c b/arch/sh/kernel/ptrace_32.c index b53664e..2130ca6 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; _______________________________________________ stable mailing list [email protected] http://linux.kernel.org/mailman/listinfo/stable
