Messages in this thread |  | | Date | Wed, 15 Jan 2020 17:29:32 -0800 | From | Kees Cook <> | Subject | Re: kunit stack usage, was: pmwg-ci report v5.5-rc4-147-gc62d43442481 |
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On Tue, Jan 07, 2020 at 01:37:07PM +0100, Arnd Bergmann wrote: > On Mon, Dec 30, 2019 at 6:16 PM PMWG CI <pmwg-ci@linaro.org> wrote: > > > > > > The error/warning: 1 drivers/base/test/property-entry-test.c:214:1: warning: the frame size of 3128 bytes is larger than 2048 bytes [-Wframe-larger-than=] > > ... was introduced by commit: > > > > commit c032ace71c29d513bf9df64ace1885fe5ff24981 > > Author: Dmitry Torokhov <dmitry.torokhov@gmail.com> > > Date: Wed Dec 4 10:53:15 2019 -0800 > > > > software node: add basic tests for property entries > > This problem is a result of the KUNIT_ASSERTION() definition that puts > a local struct on the stack interacting badly with the structleak_plugin > when CONFIG_GCC_PLUGIN_STRUCTLEAK_BYREF_ALL is set in > allmodconfig:
Geh, BYREF_ALL strikes again. I'm at LCA currently, but I'd like to try to revisit actually fixing the basic-block splitting in the plugin. This was looked at before, but I need to dig up the thread.
If a fast fix is needed, I'm fine with disabling BYREF_ALL with KUNIT. It's not optimal, but I feel it's on the BYREF_ALL code to solve this. :)
-- Kees Cook
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