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Subject: [Bug dynamic-link/19329] dl-tls.c assert failure at concurrent
 pthread_create and dlopen
Date: Mon, 04 May 2020 18:25:15 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D19329

--- Comment #20 from Sergei Trofimovich <slyfox at inbox dot ru> ---
(In reply to Szabolcs Nagy from comment #19)
> (In reply to Sergei Trofimovich from comment #18)
> > ...
> > Sun 03 May 2020 10:46:55 AM UTC
> > Didn't expect signal from child: got `Segmentation fault'
> > Sun 03 May 2020 10:47:04 AM UTC
> > double free or corruption (!prev)
> > Didn't expect signal from child: got `Aborted'
> > ...
> > Sun 03 May 2020 10:50:54 AM UTC
> > free(): invalid pointer
> > Didn't expect signal from child: got `Aborted'
> > ...
> > Sun 03 May 2020 10:52:12 AM UTC
> > tst-stack4: malloc.c:2379: sysmalloc: Assertion `(old_top =3D=3D initia=
l_top
> > (av) && old_size =3D=3D 0) || ((unsigned long) (old_size) >=3D MINSIZE =
&&
> > prev_inuse (old_top) && ((unsigned long) old_end & (pagesize - 1)) =3D=
=3D 0)'
> > failed.
> > Didn't expect signal from child: got `Aborted'
> >=20
> > Does it look like the same issue described here?
>=20
> it can be related, hard to tell.
> (your failures are consistently heap corruptions
> detected in malloc/free, instead of dynamic tls
> related state corruption)
>=20
> if you can rebuild glibc try the patches from
> comment 7 if they don't help then your issue
> is different. (if the issue disappears we don't
> know if the new barriers just masked your issue
> or fixed them).

Tried patches from #comment7 on glibc-2.30. No failures after 100 test runs.
Usually fails after 3-4 runs.

--=20
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