[英]Kernel on x86_64 not boot after upgrading Binutils and GCC
我在控制台上看不到任何日志(甚至沒有“ Decompressing Linux ...”消息)。
我的問題:
1)還有什么我可以做的以獲得早期啟動日志?
2)我是否需要向內核調試添加其他代碼?
3)還有其他方法可以調試嗎?
Binutils: 2.26.1 binutils-2.26.1-1.fc25.src.rpm
GCC: 6.4.1 gcc-6.4.1-1.fc25.src.rpm
內核: 3.10.0-514.21.1
GRUB配置
default=0
timeout=3
serial --unit=0 --speed=115200 --word=8 --parity=no --stop=1
terminal --timeout=34 serial console
title XIV-System
root (hd0,0)
kernel /boot/vmlinuz init=/system/my_init console=tty0 mce=0 i8042.noaux idle=poll scsi_mod.inq_timeout=2 selinux=0 nohpet console=ttyS0,115200 earlyprintk=ttyS0,115200 kgdboc=ttyS0,115200 ro crashkernel=auto
內核配置
- For verbos boot message
CONFIG_X86_VERBOSE_BOOTUP=y
- For early printk
CONFIG_EARLY_PRINTK=y
CONFIG_EARLY_PRINTK_DBGP=y
- For KGDB
CONFIG_KGDB_LOW_LEVEL_TRAP=y
CONFIG_KGDB_KDB=y
CONFIG_SERIAL_KGDB_NMI=y
CONFIG_HAVE_ARCH_KGDB=y
CONFIG_KGDB=y
CONFIG_KGDB_SERIAL_CONSOLE=y
CONFIG_KGDB_TESTS=y
- For KDB
CONFIG_KDB_KEYBOARD=y
CONFIG_KDB_CONTINUE_CATASTROPHIC=0
僅在使用gdb調試內核后(早期啟動階段),我才設法解決問題,基本上我發現內核在以下方面失敗:
(gdb) bt
#0 early_idt_handler () at arch/x86/kernel/head_64.S:407
#1 0xffff9fffffffffff in ?? ()
#2 0xffffff07ffffffff in ?? ()
#3 0xffffe0ffffffffff in ?? ()
#4 0x00000e0000000000 in ?? ()
#5 0xffffffff81bee8a0 in ?? ()
#6 0xffff880000014560 in ?? ()
#7 0xffffffff819c0120 in early_idt_handler () at arch/x86/kernel/head_64.S:374
#8 0x0000000000000400 in irq_stack_union ()
#9 0xffffffff81bee8a0 in ?? ()
#10 0x000000000000000f in irq_stack_union ()
#11 0x0000000000000000 in ?? ()
從中,我研究了內核源代碼樹(與head_64.S相關的補丁程序)並將其應用。 您可以找到補丁,它與以下內容有關:
commit 5f020130d5360e8266e369dc2b5f4e32ec5b05f4 (HEAD -> my_commit)
Author: Andy Lutomirski <luto@kernel.org>
Date: Fri May 22 16:15:47 2015 -0700
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