Re: gettimeofday((void *)-1, NULL) implicates core dump on recent FreeBSD 11-CURRENT

From: Oliver Pinter <oliver.pinter_at_hardenedbsd.org>
Date: Wed, 8 Jul 2015 00:17:28 +0200
On Wed, Jul 8, 2015 at 12:09 AM, Garrett Cooper <yaneurabeya_at_gmail.com> wrote:
>
>> On Jul 7, 2015, at 15:00, Oliver Pinter <oliver.pinter_at_hardenedbsd.org> wrote:
>>
>> Hi all!
>>
>> We discovered that one of the kyua test failing from gettimeofday tests.
>> The error is reproducible on recent snapshot from 11-CURRENT:
>> ftp://ftp.freebsd.org/pub/FreeBSD/snapshots/amd64/amd64/ISO-IMAGES/11.0/FreeBSD-11.0-CURRENT-amd64-20150630-r284969-disc1.iso
>>
>> root_at_freebsd:~ # cat test-gtod.c
>> #include <sys/time.h>
>> #include <stdio.h>
>>
>> int
>> main(int argc, char **argv)
>> {
>>
>>        return (gettimeofday((void *)-1, NULL));
>> }
>> root_at_freebsd:~ # make test-gtod
>> cc -O2 -pipe    test-gtod.c  -o test-gtod
>> root_at_freebsd:~ # uname -a
>> FreeBSD freebsd 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r284969: Tue Jun
>> 30 22:05:35 UTC 2015
>> root_at_releng2.nyi.freebsd.org:/usr/obj/usr/src/sys/GENERIC  amd64
>> root_at_freebsd:~ # ./test-gtod
>> Segmentation fault (core dumped)
>>
>> root_at_freebsd:~ # gdb ./test-gtod
>> GNU gdb 6.1.1 [FreeBSD]
>> Copyright 2004 Free Software Foundation, Inc.
>> GDB is free software, covered by the GNU General Public License, and you are
>> welcome to change it and/or distribute copies of it under certain conditions.
>> Type "show copying" to see the conditions.
>> There is absolutely no warranty for GDB.  Type "show warranty" for details.
>> This GDB was configured as "amd64-marcel-freebsd"...(no debugging
>> symbols found)...
>> (gdb) r
>> Starting program: /root/test-gtod
>> (no debugging symbols found)...(no debugging symbols found)...
>> Program received signal SIGSEGV, Segmentation fault.
>> 0x0000000800958fbd in bcopy () from /lib/libc.so.7
>> (gdb) bt
>> #0  0x0000000800958fbd in bcopy () from /lib/libc.so.7
>> #1  0x00000000559c1291 in ?? ()
>> #2  0xf9fde38df0174b80 in ?? ()
>> #3  0xffffffffffffffff in ?? ()
>> #4  0x0000000000000000 in ?? ()
>>
>> And this is the original kyua test:
>> op_at_opn sys> kyua test gettimeofday_test
>> gettimeofday_test:gettimeofday_err  ->  broken: Premature exit; test
>> case received signal 11 (core dumped)  [0.987s]
>> gettimeofday_test:gettimeofday_mono  ->  passed  [0.014s]
>>
>> Results file id is usr_tests_lib_libc_sys.20150707-215959-750045
>> Results saved to
>> /usr/home/op/.kyua/store/results.usr_tests_lib_libc_sys.20150707-215959-750045.db
>>
>> 1/2 passed (1 failed)
>> op_at_opn sys> pwd
>> /usr/tests/lib/libc/sys
>
> Please file a bug.

Will do.

Btw, here is one of the know good state:

op_at_robot sys# kyua test gettimeofday_test
gettimeofday_test:gettimeofday_err  ->  passed  [0.026s]
gettimeofday_test:gettimeofday_mono  ->  passed  [0.004s]

Results file id is usr_tests_lib_libc_sys.20150707-221532-875455
Results saved to
/root/.kyua/store/results.usr_tests_lib_libc_sys.20150707-221532-875455.db

2/2 passed (0 failed)
op_at_robot sys# uname -a
FreeBSD robot.hardenedbsd.org 11.0-CURRENT FreeBSD 11.0-CURRENT #100
6ab779a(HEAD): Wed May 27 02:04:09 EDT 2015
jenkins_at_nyi-01.build.hardenedbsd.org:/usr/obj/jenkins/workspace/HardenedBSD-master-amd64/sys/HARDENEDBSD
 amd64
op_at_robot sys#



>
> I have no idea where this broke because the Jenkins runs have been unreliable over the past few weeks ;(...

Do you have died executors too?
Received on Tue Jul 07 2015 - 20:17:36 UTC

This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:58 UTC