From: Andi Kleen <ak@suse.de>
Date: Thu, 16 Feb 2006 22:42:10 +0000 (+0100)
Subject: [PATCH] x86_64: Resolve the RIP of an early exception using kallsyms
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=6574ffd74b03e35026f428a2c820e6ddf45d426c;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[PATCH] x86_64: Resolve the RIP of an early exception using kallsyms

But do it after everything else to risk less from recursive
crashes.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

diff --git a/arch/x86_64/kernel/head.S b/arch/x86_64/kernel/head.S
index 692c737feddb..02fc7fa0ea28 100644
--- a/arch/x86_64/kernel/head.S
+++ b/arch/x86_64/kernel/head.S
@@ -213,6 +213,11 @@ ENTRY(early_idt_handler)
 	cmpl $2,early_recursion_flag(%rip)
 	jz  1f
 	call dump_stack
+#ifdef CONFIG_KALLSYMS	
+	leaq early_idt_ripmsg(%rip),%rdi
+	movq 8(%rsp),%rsi	# get rip again
+	call __print_symbol
+#endif
 1:	hlt
 	jmp 1b
 early_recursion_flag:
@@ -220,6 +225,8 @@ early_recursion_flag:
 
 early_idt_msg:
 	.asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n"
+early_idt_ripmsg:
+	.asciz "RIP %s\n"
 
 .code32
 ENTRY(no_long_mode)