在同一菜单下,确保Provide GDB scripts for kernel debugging选项也被选中([*])。这将启用CONFIG_GDB_SCRIPTS=y,会生成一些辅助 GDB 调试的脚本。 禁用KASLR (可选但强烈推荐): 返回到Kernel hacking菜单 ---> (可能需要先退回主菜单再进入)Processor type and features---> 找到Randomize the address of the ...
collects backtraces (user + kernel) Other tools ftrace kprobes sparse coccinelle checkpatch.pl printk dump_stack() 翻译自:The Linux Kernel documentation 参考:http://www.cs.fsu.edu/~cop4610t/lectures/project2/debugging/kernel_debugging.pdf
•处理:内核通常会打印错误信息和内核调用栈到系统日志中,这有助于开发人员诊断和修复问题。 1.2 Kernel Crash •定义:Kernel Crash 指的是内核因为严重错误而完全失去功能的情况。它可能是由 Oops 导致的,也可能是由硬件故障、驱动程序错误或其他严重的内核级别问题引起的。 •影响:当内核崩溃时,系统通常无法继...
进入Kernel hacking--->Compile-time checks and compiler options---> 确保Compile the kernel with debug info选项被选中(显示为[*])。如果未选中(显示为[ ]),按空格键切换。这将启用CONFIG_DEBUG_INFO=y,让编译器在编译内核时加入 DWARF 调试符号。 在同一菜单下,确保Provide GDB scripts for kernel debuggi...
KernelDebuggingTricks DebuggingKernelOops kernel-version-map Systemtap DebuggingKernelWithQEMU QMP kernelnewbies KernelGlossary Kernel FAQ likely() and unlikely() KernelHackingTools KASAN KCSAN KFENCE Kmemleak Memory Barriers LKMM READ_ONCE and WRITE_ONCE ...
Linux Kernel Debugging Linux Technology Center Linux Kernel Debugging Oops, Now What? Ross Mikosh James Washer Linux Technology Center Types of Problems Tools Error and Debug Messages Handling Failures Kernel Investigation Handling a System Crash Oops Analysis Example LKCD/Lcrash More Information Outline...
There is also a good source-level kernel debugger called kgdb that supports the 2.4 and 2.6 kernels. KDB is invoked when a breakpoint is hit, the system panics or by the break key. The main point entry for KDB is kdb() in kdb/kdbmain.c; when invoked., KDB disables interrupts for ...
Kernel hacking --->Compile-time checks and compiler options --->[*]Compile the kernel with debug info[*]Provide GDB scriptsforkernel debugging Processortypeand features --->[*]Randomize the address of the kernel image(KASLR)# 编译内核。make-j8mkdirrootfs...
A custom kernel boot command line for KGDB must specify: The terminal device used for debugging The baud rate of the serial connection between the host and the target device Thekgdbwaitcommand To start KGDB at boot¶ Check whether theconsoleparameter is set for using KGDB at boot ...