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From: "nsz at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
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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 13:14:28 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D19329

Szabolcs Nagy <nsz at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nsz at gcc dot gnu.org

--- Comment #19 from Szabolcs Nagy <nsz at gcc dot gnu.org> ---
(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 initial_=
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?

it can be related, hard to tell.
(your failures are consistently heap corruptions
detected in malloc/free, instead of dynamic tls
related state corruption)

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).

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