From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753508AbeCFJtn (ORCPT ); Tue, 6 Mar 2018 04:49:43 -0500 Received: from mail.skyhub.de ([5.9.137.197]:33322 "EHLO mail.skyhub.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753424AbeCFJtj (ORCPT ); Tue, 6 Mar 2018 04:49:39 -0500 From: Borislav Petkov To: X86 ML Cc: Andy Lutomirski , Josh Poimboeuf , Linus Torvalds , Peter Zijlstra , LKML Subject: [PATCH 6/9] x86/dumpstack: Add loglevel argument to show_opcodes() Date: Tue, 6 Mar 2018 10:49:17 +0100 Message-Id: <20180306094920.16917-7-bp@alien8.de> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20180306094920.16917-1-bp@alien8.de> References: <20180306094920.16917-1-bp@alien8.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Borislav Petkov Will be used in the next patch. Signed-off-by: Borislav Petkov --- arch/x86/include/asm/stacktrace.h | 1 + arch/x86/kernel/dumpstack.c | 6 +++--- 2 files changed, 4 insertions(+), 3 deletions(-) diff --git a/arch/x86/include/asm/stacktrace.h b/arch/x86/include/asm/stacktrace.h index 133d9425fced..0630eeb18bbc 100644 --- a/arch/x86/include/asm/stacktrace.h +++ b/arch/x86/include/asm/stacktrace.h @@ -111,4 +111,5 @@ static inline unsigned long caller_frame_pointer(void) return (unsigned long)frame; } +void show_opcodes(u8 *rip, const char *loglvl); #endif /* _ASM_X86_STACKTRACE_H */ diff --git a/arch/x86/kernel/dumpstack.c b/arch/x86/kernel/dumpstack.c index 12ddfc9dcb01..3625f79fbb42 100644 --- a/arch/x86/kernel/dumpstack.c +++ b/arch/x86/kernel/dumpstack.c @@ -73,13 +73,13 @@ static void printk_stack_address(unsigned long address, int reliable, printk("%s %s%pB\n", log_lvl, reliable ? "" : "? ", (void *)address); } -static void show_opcodes(u8 *rip) +void show_opcodes(u8 *rip, const char *loglvl) { unsigned int code_prologue = code_bytes * 43 / OPCODE_BUFSIZE; u8 *ip; int i; - printk(KERN_DEFAULT "Code: "); + printk("%sCode: ", loglvl); ip = (u8 *)rip - code_prologue; if (probe_kernel_read(opcodes, ip, code_bytes)) { @@ -432,6 +432,6 @@ void show_regs(struct pt_regs *regs) if (regs->ip < PAGE_OFFSET) pr_cont(" Bad RIP value.\n"); else - show_opcodes((u8 *)regs->ip); + show_opcodes((u8 *)regs->ip, KERN_DEFAULT); } } -- 2.13.0