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From: Borislav Petkov <bp@alien8.de>
To: X86 ML <x86@kernel.org>
Cc: Andy Lutomirski <luto@amacapital.net>,
Josh Poimboeuf <jpoimboe@redhat.com>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH 5/9] x86/dumpstack: Add loglevel argument to show_opcodes()
Date: Thu, 15 Mar 2018 16:44:44 +0100 [thread overview]
Message-ID: <20180315154448.16222-6-bp@alien8.de> (raw)
In-Reply-To: <20180315154448.16222-1-bp@alien8.de>
From: Borislav Petkov <bp@suse.de>
Will be used in the next patch.
Signed-off-by: Borislav Petkov <bp@suse.de>
---
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 3f781a8dddb8..82562f327a99 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -68,7 +68,7 @@ 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)
{
#define OPCODE_BUFSIZE 64
unsigned int code_prologue = OPCODE_BUFSIZE * 2 / 3;
@@ -76,7 +76,7 @@ static void show_opcodes(u8 *rip)
u8 *ip;
int i;
- printk(KERN_DEFAULT "Code: ");
+ printk("%sCode: ", loglvl);
ip = (u8 *)rip - code_prologue;
if (probe_kernel_read(opcodes, ip, OPCODE_BUFSIZE)) {
@@ -400,6 +400,6 @@ 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
next prev parent reply other threads:[~2018-03-15 15:46 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-15 15:44 [PATCH 0/9] x86/dumpstack: Cleanups and user opcode bytes Code: section, v2 Borislav Petkov
2018-03-15 15:44 ` [PATCH 1/9] x86/dumstack: Remove code_bytes Borislav Petkov
2018-03-15 18:12 ` Josh Poimboeuf
2018-03-15 15:44 ` [PATCH 2/9] x86/dumpstack: Unexport oops_begin() Borislav Petkov
2018-03-15 15:44 ` [PATCH 3/9] x86/dumpstack: Carve out Code: dumping into a function Borislav Petkov
2018-03-15 15:44 ` [PATCH 4/9] x86/dumpstack: Improve opcodes dumping in the Code: section Borislav Petkov
2018-03-15 18:10 ` Josh Poimboeuf
2018-03-15 18:16 ` Borislav Petkov
2018-03-15 19:06 ` Josh Poimboeuf
2018-03-16 11:57 ` David Laight
2018-03-15 18:19 ` Josh Poimboeuf
2018-03-15 18:23 ` Josh Poimboeuf
2018-03-15 15:44 ` Borislav Petkov [this message]
2018-03-15 15:44 ` [PATCH 6/9] x86/fault: Dump user opcode bytes on fatal faults Borislav Petkov
2018-03-15 15:44 ` [PATCH 7/9] x86/dumpstack: Add a show_ip() function Borislav Petkov
2018-03-15 18:34 ` Josh Poimboeuf
2018-03-15 18:55 ` Borislav Petkov
2018-03-15 15:44 ` [PATCH 8/9] x86/dumpstack: Save first regs set for the executive summary Borislav Petkov
2018-03-15 19:01 ` Josh Poimboeuf
2018-03-16 11:48 ` Borislav Petkov
2018-03-16 12:01 ` Josh Poimboeuf
2018-03-16 12:11 ` Borislav Petkov
2018-03-16 13:16 ` Josh Poimboeuf
2018-03-16 13:44 ` Borislav Petkov
2018-03-16 17:22 ` Linus Torvalds
2018-03-16 17:40 ` Josh Poimboeuf
2018-03-16 17:45 ` Borislav Petkov
2018-03-16 18:38 ` Josh Poimboeuf
2018-03-15 15:44 ` [PATCH 9/9] x86/dumpstack: Explain the reasoning for the prologue and buffer size Borislav Petkov
2018-03-15 18:07 ` Josh Poimboeuf
2018-03-15 18:17 ` Borislav Petkov
2018-03-15 17:51 ` [PATCH 0/9] x86/dumpstack: Cleanups and user opcode bytes Code: section, v2 Linus Torvalds
2018-04-17 14:40 ` Borislav Petkov
2018-04-17 20:16 ` Josh Poimboeuf
2018-04-17 21:06 ` Borislav Petkov
2018-04-18 13:26 ` Josh Poimboeuf
2018-04-17 16:11 [PATCH 0/9] x86/dumpstack: Cleanups and user opcode bytes Code: section, v3 Borislav Petkov
2018-04-17 16:11 ` [PATCH 5/9] x86/dumpstack: Add loglevel argument to show_opcodes() Borislav Petkov
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