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SubjectRe: [PATCH V4] notifier/panic: Introduce panic_notifier_filter
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> @@ -146,6 +157,34 @@ void nmi_panic(struct pt_regs *regs, const char *msg)
> }
> EXPORT_SYMBOL(nmi_panic);
>
> +static int __init panic_notifier_filter_setup(char *buf)
> +{
> + char *func;
> + unsigned long addr;
> +
> + while ((func = strsep(&buf, ","))) {
> + addr = kallsyms_lookup_name(func);
> + if (!addr) {
> + pr_warn("panic_notifier_filter: invalid symbol %s\n", func);
> + continue;
> + }

Could you remove this check?

panic_notifier_list is exported to kernel modules and this check
prevents such users from using this feature.

Thanks.
HATAYAMA, Daisuke

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