NetBSD Problem Report #55939
From martin@duskware.de Wed Jan 20 13:44:25 2021
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From: martin@NetBSD.org
Reply-To: martin@NetBSD.org
To: gnats-bugs@NetBSD.org
Subject: arc4random_uniform() broken on arm?
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>Number: 55939
>Category: lib
>Synopsis: arc4random_uniform() broken on arm?
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: lib-bug-people
>State: closed
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Wed Jan 20 13:45:00 +0000 2021
>Closed-Date: Fri Nov 05 18:37:22 +0000 2021
>Last-Modified: Fri Nov 05 18:37:22 +0000 2021
>Originator: Martin Husemann
>Release: NetBSD 9.99.78
>Organization:
The NetBSD Foundation, Inc.
>Environment:
System: NetBSD space-truckin.duskware.de 9.99.78 NetBSD 9.99.78 (GENERIC) #118: Wed Jan 20 12:45:59 CET 2021 martin@seven-days-to-the-wolves.aprisoft.de:/work/src/sys/arch/evbarm/compile/GENERIC evbarm
Architecture: earmv7hfeb
Machine: evbarm
>Description:
While trying to update a machine to -current it spent ~20 cpu minutes in
extracting xfont.tgz:
# tar xpzf xfont.tgz
[ 6448.3086516] load: 0.99 cmd: tar 2494 [0x6db0dffe/0] 55.91u 1015.38s 99% 3124k
Attaching gdb showed:
[Switching to LWP 2494 of process 2494]
0x6db0dffe in __udivmodsi4 () from /lib/libc.so.12
(gdb) bt
#0 0x6db0dffe in __udivmodsi4 () from /lib/libc.so.12
#1 0x6db0bd50 in __aeabi_uidivmod () from /lib/libc.so.12
#2 0x6db02a08 in _arc4random_uniform (bound=bound@entry=62)
at /work/src/lib/libc/gen/arc4random.c:642
#3 0x6db01a68 in __gettemp (
path=path@entry=0x6de16000 "usr/X11R7/lib/X11/fonts/misc/8x13B-ISO8859-9.pcf.gzXXXXXX", doopen=0x7ffa51b4, doopen@entry=0x7ffa51ac,
domkdir=domkdir@entry=0, slen=slen@entry=0, oflags=oflags@entry=0)
at /work/src/lib/libc/stdio/gettemp.c:89
#4 0x6db01910 in _mkstemp (
path=0x6de16000 "usr/X11R7/lib/X11/fonts/misc/8x13B-ISO8859-9.pcf.gzXXXXXX") at /work/src/lib/libc/stdio/mkstemp.c:55
#5 0x6df2f9c4 in __archive_mktempx (tmpdir=tmpdir@entry=0x0,
template=template@entry=0x6dbbb17c)
at /work/src/external/bsd/libarchive/dist/libarchive/archive_util.c:409
Unfortunately gdb died:
--Type <RET> for more, q to quit, c to continue without paging--q
terminate called after throwing an instance of 'gdb_exception_quit'
[ 6695.2111432] sorry, pid 2494 was killed: orphaned traced process
Abort (core dumped)
>How-To-Repeat:
no idea, apparently happens more or less randomly
>Fix:
n/a
>Release-Note:
>Audit-Trail:
State-Changed-From-To: open->closed
State-Changed-By: martin@NetBSD.org
State-Changed-When: Fri, 05 Nov 2021 18:37:22 +0000
State-Changed-Why:
Have not seen it again
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.46 2020/01/03 16:35:01 leot Exp $
$NetBSD: gnats_config.sh,v 1.9 2014/08/02 14:16:04 spz Exp $
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