Re: Why module's global symbol cannot be displayed in crash? [ARM]

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----- Original Message -----

> > KSYMS_START gets set during session initialization when parsing the base kernel
> > symbols from the vmlinux file in symtab_init()/store_symbols(), and it could never
> > get reset.
> 
> OK, thanks for the clarification. Then I guess we can do something like the
> below patch? I'm not exactly sure if we can use ec->st_info below but it looks
> like arm_verify_symbol() doesn't use that anyway.
> 
> diff --git a/symbols.c b/symbols.c
> index 4fb397c..10085be 100755
> --- a/symbols.c
> +++ b/symbols.c
> @@ -2004,6 +2004,14 @@ store_module_kallsyms_v2(struct load_module
> *lm, int start, int curr,
>  		if (*nameptr == '\0')
>  			continue;
>  
> +		/*
> +		 * On ARM we have linker mapping symbols like '$a' and '$d'.
> +		 * Make sure that these don't end up into our symbol list.
> +		 */
> +		if (machine_type("ARM") &&
> +		    !machdep->verify_symbol(nameptr, ec->st_value, ec->st_info))
> +			continue;
> +
>  		if (CRASHDEBUG(7))
>  			fprintf(fp,
>  	          "%s: st_name: %ld st_value: %lx st_shndx: %ld st_info:
>  	          %c\n",
> 

Queued for crash-6.1.5.

Thanks,
  Dave

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