core dump调试

coredump调试方法：

1：生成coredump

修改/etc/profile

 

# generate coredump file

ulimit -c unlimited

mkdir -p /fhrootfs/coredump

echo "/fhrootfs/coredump/core-%e-%p-%t" > /proc/sys/kernel/core_pattern

 

 

2：拷贝coredump到虚拟机中，和应用程序在同一个目录

 

 

/opt/toolchains/uclibc-crosstools-gcc-4.4.2-1/usr/bin/mips-linux-uclibc-gdb AppManage core-AppManage-3449-26

 

 

3：在gdb中执行：

设置库路径

 

set solib-absolute-prefix -- Set an alternate system root

set solib-search-path -- Set the search path for loading non-absolute shared library symbol files

 

add-shared-symbol-files -- Load the symbols from shared objects in the dynamic linker's link map

add-symbol-file -- Load symbols from FILE

 

 

 

 

 

set solib-absolute-prefix  /root/smarthg_bcm/targets/HG320G/fs.install

set solib-search-path -- Set the search path for loading non-absolute shared library symbol files

 

add-shared-symbol-files -- Load the symbols from shared objects in the dynamic linker's link map

add-symbol-file -- Load symbols from FILE

 

 

4：执行

bt

 

where