powerpc: Fix graceful debugger recovery
When exiting xmon with 'x' (exit and recover), oops_begin bails
out immediately, but die then calls __die() and oops_end(), which
cause a lot of bad things to happen.
If the debugger was attached then went to graceful recovery, exit
from die() immediately.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 91d278c..13ca8b6 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -122,9 +122,6 @@ static unsigned long oops_begin(struct pt_regs *regs)
int cpu;
unsigned long flags;
- if (debugger(regs))
- return 1;
-
oops_enter();
/* racy, but better than risking deadlock. */
@@ -227,8 +224,12 @@ NOKPROBE_SYMBOL(__die);
void die(const char *str, struct pt_regs *regs, long err)
{
- unsigned long flags = oops_begin(regs);
+ unsigned long flags;
+ if (debugger(regs))
+ return;
+
+ flags = oops_begin(regs);
if (__die(str, regs, err))
err = 0;
oops_end(flags, regs, err);