Linux加载vmlinux调试

使用gdb加载内核符号表

arm-eabi-gdb out/target/product/msm8625/obj/KERNEL_OBJ/vmlinux

在内核的.config里面要打开 DEBUG_INFO和DEBUG_VM

定位故障代码

(gdb) l * qrd7627a_add_io_devices 0x100

0xc07cd05c is in qrd7627a_add_io_devices (/home/yejialong/GH700C/kernel/arch/arm/mach-msm/msm8x25/goso-msm7627a-io.c:1851).

1846 } else if (machine_is_msm8625q_skud() || machine_is_msm8625q_evbd()) {

1847 #ifndef CONFIG_CALA02

1848 platform_device_register(&pmic_mpp_leds_pdev_skud);

1849 #endif

1850 /* enable the skud flash and torch by gpio leds driver */

1851 platform_device_register(&gpio_flash_skud);

1852 } else if (machine_is_msm8625q_skue()) {

1853 /* enable the skue flashlight by gpio leds driver */

1854 platform_device_register(&gpio_flash_skue);

1855 }

下面是mtk平台加载的方法，但无论哪个平台都是一样的，因都是一样的。

weiqifa@weiqifa-Inspiron-3847:~/weiqifa/tm100$ ./prebuilts/gcc/linux-x86/arm/arm-eabi-4.7/bin/arm-eabi-gdb ./out/target/product/tm100/obj/KERNEL_OBJ/vmlinux

GNU gdb (GDB) 7.3.1-gg2

Copyright (C) 2011 Free Software Foundation, Inc.

License GPLv3 : GNU GPL version 3 or later

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law. Type "show copying"

and "show warranty" for details.

This GDB was configured as "--host=x86_64-linux-gnu --target=arm-linux-android".

For bug reporting instructions, please see:

...

Reading symbols from /home/weiqifa/weiqifa/tm100/out/target/product/tm100/obj/KERNEL_OBJ/vmlinux...done.

(gdb)

rockchip rk3399调试vmlinux

./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinux

weiqifa@dev:~/rk3399_7in1$ ./prebuilts/gcc/linux-x86/aarch64/aarch64-linux-android-4.9/bin/aarch64-linux-android-addr2line -f -e kernel/vmlinux ffffff8008459f3c

rk_iommu_domain_free

/data/weiqifa/rk3399_7in1/kernel/drivers/iommu/rockchip-iommu.c:1005 (discriminator 2)

weiqifa@dev:~/rk3399_7in1$

RK平台tombstone调试

./prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-addr2line -e ./out/target/product/rk3399_mid/symbols/system/lib/libspeexresampler.so 0x00002d54

/proc/self/cwd/external/speex/libspeex/resample.c:376

arm-eabi-gdb 先用命令找到这个东西，再去找vmlinux 还有就是我arm-eabi-4.7/ 这个版本个版本。

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