From: Andi Kleen <ak@suse.de>
Date: Tue, 26 Sep 2006 08:52:34 +0000 (+0200)
Subject: [PATCH] Check for end of stack trace before falling back
X-Git-Tag: v2.6.19-rc1~1077^2~112
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=be7a91709b90825990e571b2f20cea937d5eef6c;p=linux-2.6

[PATCH] Check for end of stack trace before falling back

Signed-off-by: Andi Kleen <ak@suse.de>
---

diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index 4ac18b02ea..28e53342f2 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -292,6 +292,8 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs, unsigned long * s
 				if ((long)UNW_SP(&info) < 0) {
 					ops->warning(data, "Leftover inexact backtrace:\n");
 					stack = (unsigned long *)UNW_SP(&info);
+					if (!stack)
+						return;
 				} else
 					ops->warning(data, "Full inexact backtrace again:\n");
 			} else if (call_trace >= 1)