Re: [linux-next:master 6276/7050] lib/stackdepot.c:326: undefined reference to `__irqentry_text_start'

[Alexander Potapenko <glider@google.com>]

On Sat, Mar 7, 2020 at 4:16 AM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Sat, 7 Mar 2020 02:42:14 +0800 kbuild test robot <lkp@intel.com> wrote:
>
> > tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> > head:   b86a6a241b7c60ca7a6ca4fb3c0d2aedbbf2c1b6
> > commit: 2d8fce24a0fb125e4fbbd4bb546cc0f9e6122d8d [6276/7050] kasan: stackdepot: move filter_irq_stacks() to stackdepot.c
> > config: ia64-randconfig-a001-20200306 (attached as .config)
> > compiler: ia64-linux-gcc (GCC) 7.5.0
> > reproduce:
> >         wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
> >         chmod +x ~/bin/make.cross
> >         git checkout 2d8fce24a0fb125e4fbbd4bb546cc0f9e6122d8d
> >         # save the attached .config to linux build tree
> >         GCC_VERSION=7.5.0 make.cross ARCH=ia64
> >
> > If you fix the issue, kindly add following tag
> > Reported-by: kbuild test robot <lkp@intel.com>
> >
> > All errors (new ones prefixed by >>):
> >
> >    lib/stackdepot.o: In function `in_irqentry_text':
> > >> lib/stackdepot.c:326: undefined reference to `__irqentry_text_start'
> > >> lib/stackdepot.c:325: undefined reference to `__irqentry_text_end'
> > >> lib/stackdepot.c:326: undefined reference to `__softirqentry_text_start'
> > >> lib/stackdepot.c:327: undefined reference to `__softirqentry_text_end'
> > >> lib/stackdepot.c:326: undefined reference to `__irqentry_text_start'
> > >> lib/stackdepot.c:325: undefined reference to `__irqentry_text_end'
> > >> lib/stackdepot.c:326: undefined reference to `__softirqentry_text_start'
> > >> lib/stackdepot.c:327: undefined reference to `__softirqentry_text_end'
> >
>
> Thanks.  This has been known about for a couple of weeks.  Alexander, did
> I miss a fix?
Thanks for letting me know.
The previous bug was on a different arch, but the solution should
probably be the same everywhere: add IRQENTRY_TEXT and
SOFTIRQENTRY_TEXT to the linker scripts.
I'll look into this.


-- 
Alexander Potapenko
Software Engineer

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