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SubjectRe: [PATCH 1/9] pstore/zone: cap the maximum device size
On Fri, Oct 16, 2020 at 9:27 PM Christoph Hellwig <hch@lst.de> wrote:
>
> Introduce an abritrary 128MiB cap to avoid malloc failures when using
> a larger block device.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> fs/pstore/zone.c | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/fs/pstore/zone.c b/fs/pstore/zone.c
> index 3ce89216670c9b..5266ccbec007f3 100644
> --- a/fs/pstore/zone.c
> +++ b/fs/pstore/zone.c
> @@ -1299,6 +1299,10 @@ int register_pstore_zone(struct pstore_zone_info *info)
> pr_warn("total_size must be >= 4096\n");
> return -EINVAL;
> }
> + if (info->total_size > SZ_128M) {
> + pr_warn("capping size to 128MiB\n");
> + info->total_size = SZ_128M;
> + }
>

Reviewed-by: WeiXiong Liao <gmpy.liaowx@gmail.com>


> if (!info->kmsg_size && !info->pmsg_size && !info->console_size &&
> !info->ftrace_size) {
> --
> 2.28.0
>

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