svn commit: r329984 - in head: cddl/contrib/opensolaris/lib/libzpool/common sys/cddl/compat/opensolaris/sys

[Shawn Webb]

On Wed, Mar 14, 2018 at 04:51:27PM -0600, Alan Somers wrote:
> On Wed, Mar 14, 2018 at 4:50 PM, Shawn Webb <shawn.webb at hardenedbsd.org>
> wrote:
> 
> > On Sun, Feb 25, 2018 at 02:29:43PM +0000, Alan Somers wrote:
> > > Author: asomers
> > > Date: Sun Feb 25 14:29:43 2018
> > > New Revision: 329984
> > > URL: https://svnweb.freebsd.org/changeset/base/329984
> > >
> > > Log:
> > >   Don't declare __assfail as static
> > >
> > >   It gets called by dmu_buf_init_user, which is inline but not static.
> > So it
> > >   needs global linkage itself.
> > >
> > >   Reported by:        GCC-6
> > >   MFC after:  17 days
> > >   X-MFC-With: 329722
> > >
> >
> > Hey Alan,
> >
> > This commit breaks compiling world with ASAN.
> >
> > Some applications, like zfs, will fail with this error:
> >
> > /lib/libuutil.so.2: Undefined symbol "__assfail"
> >
> > Thanks,
> >
> 
> How does one build world with ASAN ?

HardenedBSD has a feature branch in its playground repo for ASAN-ified
world.

We introduced two new MK_* toggles: MK_ASAN and MK_ASAN_RECOVER.
MK_ASAN is self-explanitory. MK_ASAN_RECOVER tells the sanitizer
framework to let the application continue running instead of abort
execution.

Here's where the magic gets set:

https://github.com/HardenedBSD/hardenedBSD-playground/blob/hardened/current/asan/share/mk/bsd.prog.mk#L125-L134

Thanks,

-- 
Shawn Webb
Cofounder and Security Engineer
HardenedBSD

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