On Fri, Aug 16, 2019 at 10:54:17AM +0800, Ming Lei wrote:
> It is reported that sysfs buffer overflow can be triggered in case
> of too many CPU cores(>841 on 4K PAGE_SIZE) when showing CPUs in
> blk_mq_hw_sysfs_cpus_show().
>
> So use cpumap_print_to_pagebuf() to print the info and fix the potential
> buffer overflow issue.
>
> Cc: stable@xxxxxxxxxxxxxxx
> Cc: Mark Ray <mark.ray@xxxxxxx>
> Cc: Greg KH <gregkh@xxxxxxxxxxxxxxxxxxx>
> Fixes: 676141e48af7("blk-mq: don't dump CPU -> hw queue map on driver load")
> Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
> ---
> block/blk-mq-sysfs.c | 15 +--------------
> 1 file changed, 1 insertion(+), 14 deletions(-)
No list of what changed from v1 under here?
Anyway, no, just delete the attribute please.
thanks,
greg k-h
