lkml.org 
[lkml]   [2017]   [Sep]   [28]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: EBPF-triggered WARNING at mm/percpu.c:1361 in v4-14-rc2
Hello,

On Thu, Sep 28, 2017 at 03:45:38PM +0100, Mark Rutland wrote:
> > Perhaps the pr_warn() should be ratelimited; or could there be an
> > option where we only return NULL, not triggering a warn at all (which
> > would likely be what callers might do anyway when checking against
> > PCPU_MIN_UNIT_SIZE and then bailing out)?
>
> Those both make sense to me; checking __GFP_NOWARN should be easy
> enough.

That also makes sense.

> Just to check, do you think that dev_map_alloc() should explicitly test
> the size against PCPU_MIN_UNIT_SIZE, prior to calling pcpu_alloc()?

But let's please not do this.

Thanks.

--
tejun

\
 
 \ /
  Last update: 2017-09-28 16:53    [W:0.043 / U:0.032 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site