[PATCH 4/5] x86/dumpstack: Add loglevel argument to show_opcodes()
From: Borislav Petkov
Date: Mon Feb 19 2018 - 15:29:52 EST
From: Borislav Petkov <bp@xxxxxxx>
Will be used in the next patch.
Signed-off-by: Borislav Petkov <bp@xxxxxxx>
---
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 aef0d98cc282..17e9f358c42a 100644
--- a/arch/x86/kernel/dumpstack.c
+++ b/arch/x86/kernel/dumpstack.c
@@ -388,13 +388,13 @@ static int __init code_bytes_setup(char *s)
}
__setup("code_bytes=", code_bytes_setup);
-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