On 01/08/22 at 12:34pm, Guilherme G. Piccoli wrote: ...... > So, this patch aims to ease this decision: we hereby introduce a filter > for the panic notifier list, in which users may select specifically > which callbacks they wish to run, allowing a safer kdump. The allowlist > should be provided using the parameter "panic_notifier_filter=a,b,..." > where a, b are valid callback names. Invalid symbols are discarded. > > Currently up to 16 symbols may be passed in this list, we consider > that this numbers allows enough flexibility (and no matter what > architecture is used, at most 30 panic callbacks are registered). > In an experiment using a qemu x86 virtual machine, by default only > six callbacks are registered in the panic notifier list. > Once a valid callback name is provided in the list, such function > is allowed to be registered/unregistered in the panic_notifier_list; > all other panic callbacks are ignored. Notice that this filter is > only for the panic notifiers and has no effect in the other notifiers. > > Signed-off-by: Guilherme G. Piccoli <gpiccoli@xxxxxxxxxx> This patch looks good to me, thx. Acked-by: Baoquan He <bhe@xxxxxxxxxx>
