Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1382758

KASAN can't change FRAME_WARN

Show all headers | View 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

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

KASAN can't change FRAME_WARN "Shi, Yang" <yang.shi@linaro.org> - 2016-04-19 19:50 +0200
  Re: KASAN can't change FRAME_WARN Andrey Ryabinin <aryabinin@virtuozzo.com> - 2016-04-20 18:10 +0200

csiph-web