NetBSD Problem Report #56296

From martin@duskware.de  Sat Jul  3 15:41:02 2021
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From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: gdb spins in lib/libc/tls/t_tls_dlopen
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>Number:         56296
>Category:       port-arm
>Synopsis:       gdb spins in lib/libc/tls/t_tls_dlopen
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    port-arm-maintainer
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jul 03 15:45:00 +0000 2021
>Last-Modified:  Tue Aug 15 04:05:03 +0000 2023
>Originator:     Martin Husemann
>Release:        NetBSD 9.99.86
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD unpluged.duskware.de 9.99.86 NetBSD 9.99.86 (UNPLUGED) #387: Sat Jul 3 10:36:35 CEST 2021 martin@seven-days-to-the-wolves.aprisoft.de:/work/src/sys/arch/evbarm/compile/UNPLUGED evbarm
Architecture: earmv5
Machine: evbarm
>Description:

During a ful ATF test run, this machine stops at:

lib/libc/tls/t_tls_dlopen (361/890): 1 test cases
    t_tls_dlopen:

Examining closer, the test crashes and ATF tries to get a backtrace, but
gdb spins and blocks atf. Killing gdb makes atf continue.

>How-To-Repeat:

cd /usr/tests/lib/libc/tls/ && atf-run t_tls_dlopen

>Fix:
n/a

>Audit-Trail:
From: Martin Husemann <martin@duskware.de>
To: gnats-bugs@NetBSD.org
Cc: 
Subject: Re: port-arm/56296: gdb spins forever
Date: Fri, 5 Nov 2021 19:40:01 +0100

 This is still reproducable on evbarmv5.

 Martin

From: Rin Okuyama <rokuyama.rk@gmail.com>
To: "gnats-bugs@NetBSD.org" <gnats-bugs@netbsd.org>, netbsd-bugs@netbsd.org
Cc: 
Subject: Re: port-arm/56296 (gdb spins in lib/libc/tls/t_tls_dlopen)
Date: Tue, 15 Aug 2023 13:03:23 +0900

 For earmv5-el, in addition to lib/libc/tls/t_tls_dlopen,
 all tests in libexec/ld_elf.so/t_tls_extern crashes in
 a similar manner. GDB also spins forever.

 port-arm/56839 is irrelevant here; its workaround

 https://gist.github.com/rokuyama/3d791f2ceb2757dc389a95910162c9cb

 does not help.

 Strangely enough, these failures are not observed for
 earmv5-eb, even if running on *the same machine* (note
 that MARVELL_NAS-based machines support both endians).

 I will examine further...

 Thanks,
 rin

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