From 950fee84557416a3427dd404a13addc4be7b3e6c Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Tue, 26 Sep 2006 10:52:34 +0200 Subject: [PATCH] [PATCH] i386: Terminate backtrace fallback early if unwinder stack pointer is zero Cc: jbeulich@novell.com Signed-off-by: Andi Kleen --- arch/i386/kernel/traps.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 4ced4285163b..86fa7e47f301 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -197,6 +197,8 @@ void dump_trace(struct task_struct *task, struct pt_regs *regs, if (UNW_SP(&info) >= PAGE_OFFSET) { ops->warning(data, "Leftover inexact backtrace:\n"); stack = (void *)UNW_SP(&info); + if (!stack) + return; } else ops->warning(data, "Full inexact backtrace again:\n"); } else if (call_trace >= 1) -- 2.20.1