Messages in this thread Patch in this message | | | Subject | [patch 078/198] x86_64: Dump stack and prevent recursion on early fault | From | akpm@osdl ... | Date | Tue, 12 Apr 2005 03:31:47 -0700 |
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From: "Andi Kleen" <ak@suse.de>
Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> ---
25-akpm/arch/x86_64/kernel/head.S | 8 ++++++++ 1 files changed, 8 insertions(+)
diff -puN arch/x86_64/kernel/head.S~x86_64-dump-stack-and-prevent-recursion-on-early-fault arch/x86_64/kernel/head.S --- 25/arch/x86_64/kernel/head.S~x86_64-dump-stack-and-prevent-recursion-on-early-fault 2005-04-12 03:21:22.009790904 -0700 +++ 25-akpm/arch/x86_64/kernel/head.S 2005-04-12 03:21:22.012790448 -0700 @@ -200,14 +200,22 @@ init_rsp: .quad init_thread_union+THREAD_SIZE-8 ENTRY(early_idt_handler) + cmpl $2,early_recursion_flag(%rip) + jz 1f + incl early_recursion_flag(%rip) xorl %eax,%eax movq 8(%rsp),%rsi # get rip movq (%rsp),%rdx movq %cr2,%rcx leaq early_idt_msg(%rip),%rdi call early_printk + cmpl $2,early_recursion_flag(%rip) + jz 1f + call dump_stack 1: hlt jmp 1b +early_recursion_flag: + .long 0 early_idt_msg: .asciz "PANIC: early exception rip %lx error %lx cr2 %lx\n" _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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