mirror of https://lore.kernel.org/lkml/
 help / color / mirror / Atom feed
From: "Shi, Yang" <yang.shi@linaro.org>
To: aryabinin@virtuozzo.com
Cc: "linux-kernel@vger.kernel.org >> LKML" <linux-kernel@vger.kernel.org>
Subject: KASAN can't change FRAME_WARN
Date: Tue, 19 Apr 2016 10:48:06 -0700	[thread overview]
Message-ID: <57166F56.8010401@linaro.org> (raw)

Hi Andrey,

When I enable KASAN for 4.5 and 4.6 (I didn't try with older versions), 
I got FRAME_WARN warning for frame size exceeds 2048 bytes.

Then I found the kconfig looks like:

range 0 8192
default 0 if KASAN
default 1024 if !64BIT
default 2048 if 64BIT

In my understanding, FRAME_WARN should be 0 once KASAN is enabled, but 
it is still 2048. I tried a couple of fixes, i.e.

default 0 if KASAN
default 1024 if (!KASAN && !64BIT)
default 2048 if (!KASAN && 64BIT)

But, nothing works, so I have to add "depends on !KASAN" to disable 
FRAME_WARN completely, but it causes the kernel image size increased.

Any hint is appreciated.

Thanks,
Yang

             reply	other threads:[~2016-04-19 17:48 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-19 17:48 Shi, Yang [this message]
2016-04-20 16:03 ` Andrey Ryabinin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=57166F56.8010401@linaro.org \
    --to=yang.shi@linaro.org \
    --cc=aryabinin@virtuozzo.com \
    --cc=linux-kernel@vger.kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
Powered by JetHome