linux-kernel - [PATCH 7/7] i386, dumpstack: unify die()

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Message-Id: <1224669614-25863-8-git-send-email-heukelum@fastmail.fm>
Date:	Wed, 22 Oct 2008 12:00:14 +0200
From:	Alexander van Heukelum <heukelum@...tmail.fm>
To:	Neil Horman <nhorman@...driver.com>, Ingo Molnar <mingo@...e.hu>,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org,
	vgoyal@...hat.com, hbabu@...ibm.com, hpa@...or.com,
	akpm@...ux-foundation.org,
	Alexander van Heukelum <heukelum@...tmail.fm>,
	ebiederm@...ssion.com, tglx@...utronix.de
Cc:	Alexander van Heukelum <heukelum@...tmail.fm>
Subject: [PATCH 7/7] i386, dumpstack: unify die()

Make i386's die() equal to x86_64's version.

Whitespace-only changes on x86_64, to make it equal to i386's
version. (user_mode and user_mode_vm are equal on x86_64.)

Signed-off-by: Alexander van Heukelum <heukelum@...tmail.fm>
---
 arch/x86/kernel/dumpstack_32.c |   10 +++-------
 arch/x86/kernel/dumpstack_64.c |    6 +++++-
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index e91ae34..f2046c5 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -378,15 +378,11 @@ void die(const char *str, struct pt_regs *regs, long err)
 	unsigned long flags = oops_begin();
 	int sig = SIGSEGV;
 
-	if (die_nest_count < 3) {
+	if (!user_mode_vm(regs))
 		report_bug(regs->ip, regs);
 
-		if (__die(str, regs, err))
-			sig = 0;
-	} else {
-		printk(KERN_EMERG "Recursive die() failure, output suppressed\n");
-	}
-
+	if (__die(str, regs, err))
+		sig = 0;
 	oops_end(flags, regs, sig);
 }
 
diff --git a/arch/x86/kernel/dumpstack_64.c b/arch/x86/kernel/dumpstack_64.c
index 831e1e1..28c67aa 100644
--- a/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@ -506,12 +506,16 @@ int __kprobes __die(const char *str, struct pt_regs *regs, long err)
 	return 0;
 }
 
+/*
+ * This is gone through when something in the kernel has done something bad
+ * and is about to be terminated:
+ */
 void die(const char *str, struct pt_regs *regs, long err)
 {
 	unsigned long flags = oops_begin();
 	int sig = SIGSEGV;
 
-	if (!user_mode(regs))
+	if (!user_mode_vm(regs))
 		report_bug(regs->ip, regs);
 
 	if (__die(str, regs, err))
-- 
1.5.4.3

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