linux-kernel - [tip:x86/asm] x86/32: Print control and debug registers for kerenel context

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Message-ID: <tip-c7e23289a6aa95048a78b252b462f24ca6cf7f96@git.kernel.org>
Date:	Thu, 8 Mar 2012 02:18:06 -0800
From:	tip-bot for Jan Beulich <JBeulich@...e.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, hpa@...or.com, mingo@...hat.com,
	jbeulich@...e.com, JBeulich@...e.com, tglx@...utronix.de,
	mingo@...e.hu
Subject: [tip:x86/asm] x86/32:
  Print control and debug registers for kerenel context

Commit-ID:  c7e23289a6aa95048a78b252b462f24ca6cf7f96
Gitweb:     http://git.kernel.org/tip/c7e23289a6aa95048a78b252b462f24ca6cf7f96
Author:     Jan Beulich <JBeulich@...e.com>
AuthorDate: Thu, 8 Mar 2012 09:23:14 +0000
Committer:  Ingo Molnar <mingo@...e.hu>
CommitDate: Thu, 8 Mar 2012 10:57:35 +0100

x86/32: Print control and debug registers for kerenel context

While for a user mode register dump it may be reasonable to skip
those (albeit x86-64 doesn't do so), for kernel mode dumps these
should be printed to make sure all information possibly
necessary for analysis is available.

Signed-off-by: Jan Beulich <jbeulich@...e.com>
Link: http://lkml.kernel.org/r/4F58889202000078000770E7@nat28.tlf.novell.com
Signed-off-by: Ingo Molnar <mingo@...e.hu>
---
 arch/x86/kernel/dumpstack_32.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/dumpstack_32.c b/arch/x86/kernel/dumpstack_32.c
index c99f9ed..88ec912 100644
--- a/arch/x86/kernel/dumpstack_32.c
+++ b/arch/x86/kernel/dumpstack_32.c
@@ -87,7 +87,7 @@ void show_registers(struct pt_regs *regs)
 	int i;
 
 	print_modules();
-	__show_regs(regs, 0);
+	__show_regs(regs, !user_mode_vm(regs));
 
 	printk(KERN_EMERG "Process %.*s (pid: %d, ti=%p task=%p task.ti=%p)\n",
 		TASK_COMM_LEN, current->comm, task_pid_nr(current),
--
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