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

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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>
This commit is contained in:
Andi Kleen 2006-02-16 23:42:10 +01:00 • committed by Linus Torvalds
parent 7fd67843b9
commit 6574ffd74b
1 changed files with 7 additions and 0 deletions
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7
arch/x86_64/kernel/head.S
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@ -213,6 +213,11 @@ ENTRY(early_idt_handler)
cmpl $2,early_recursion_flag(%rip) cmpl $2,early_recursion_flag(%rip)
jz 1f jz 1f
call dump_stack 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 1: hlt
jmp 1b jmp 1b
early_recursion_flag: early_recursion_flag:
@ -220,6 +225,8 @@ early_recursion_flag:
early_idt_msg: early_idt_msg:
.asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n" .asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n"
early_idt_ripmsg:
.asciz "RIP %s\n"
.code32 .code32
ENTRY(no_long_mode) ENTRY(no_long_mode)