From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from sog-mx-1.v43.ch3.sourceforge.com ([172.29.43.191] helo=mx.sourceforge.net) by sfs-ml-2.v29.ch3.sourceforge.com with esmtp (Exim 4.76) (envelope-from ) id 1TgDXk-000456-QX for ltp-list@lists.sourceforge.net; Wed, 05 Dec 2012 11:53:36 +0000 Received: from mx4-phx2.redhat.com ([209.132.183.25]) by sog-mx-1.v43.ch3.sourceforge.com with esmtp (Exim 4.76) id 1TgDXi-0003OB-8m for ltp-list@lists.sourceforge.net; Wed, 05 Dec 2012 11:53:36 +0000 Received: from zmail17.collab.prod.int.phx2.redhat.com (zmail17.collab.prod.int.phx2.redhat.com [10.5.83.19]) by mx4-phx2.redhat.com (8.13.8/8.13.8) with ESMTP id qB5BrSYR022686 for ; Wed, 5 Dec 2012 06:53:28 -0500 Date: Wed, 5 Dec 2012 06:53:28 -0500 (EST) From: Jan Stancek Message-ID: <1422417931.10821599.1354708408079.JavaMail.root@redhat.com> In-Reply-To: <8fbb13b857a614a0daf5dffdfb385871fce2e990.1354708056.git.jstancek@redhat.com> MIME-Version: 1.0 Subject: Re: [LTP] [PATCH] open_posix_testsuite/.../aio_red/7-1.c: fix race at exit List-Id: Linux Test Project General Discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-list-bounces@lists.sourceforge.net To: ltp-list@lists.sourceforge.net ----- Original Message ----- > From: "Jan Stancek" > To: ltp-list@lists.sourceforge.net > Sent: Wednesday, 5 December, 2012 12:49:47 PM > Subject: [LTP] [PATCH] open_posix_testsuite/.../aio_red/7-1.c: fix race at exit ^^ Sorry, there's a typo in subject. "red" -> "read". > > This testcase crashed in about 1/200 of runs on s390x system with 2 > CPUs: > > Core was generated by `./7-1.run-test'. > Program terminated with signal 11, Segmentation fault. > #0 _dl_fini () at dl-fini.c:228 > 228 if (l->l_init_called) > (gdb) bt > #0 _dl_fini () at dl-fini.c:228 > #1 0x000003fffd345c62 in __run_exit_handlers (status= out>, listp=0x3fffd4b4a78 <__exit_funcs>, > run_list_atexit=run_list_atexit@entry=true) at exit.c:77 > #2 0x000003fffd345ca4 in __GI_exit (status=) at > exit.c:99 > #3 0x000003fffd3294e6 in __libc_start_main (main=0x80000b18 >
, argc=, ubp_av=0x3ffff970108, > init=, fini=0x80000d4c <__libc_csu_fini>, > rtld_fini=0x3fffd50821c <_dl_fini>, stack_end=0x3ffff970050) > at libc-start.c:257 > #4 0x0000000080000a26 in _start () > (gdb) x/1x l > 0x9fd4f2918: Cannot access memory at address 0x9fd4f2918 > > The crash was presumably caused by race, where variable defined in > main() > got out of scope before operation started by aio_read() completed. > > Patched version succesfully made 100000 iterations. > > Signed-off-by: Jan Stancek > --- > .../conformance/interfaces/aio_read/7-1.c | 3 +++ > 1 files changed, 3 insertions(+), 0 deletions(-) > > diff --git > a/testcases/open_posix_testsuite/conformance/interfaces/aio_read/7-1.c > b/testcases/open_posix_testsuite/conformance/interfaces/aio_read/7-1.c > index 2d13565..1227db4 100644 > --- > a/testcases/open_posix_testsuite/conformance/interfaces/aio_read/7-1.c > +++ > b/testcases/open_posix_testsuite/conformance/interfaces/aio_read/7-1.c > @@ -70,6 +70,9 @@ int main() > exit(PTS_FAIL); > } > > + while (aio_error(&aiocb) == EINPROGRESS) > + ; > + > close(fd); > printf("Test PASSED\n"); > return PTS_PASS; > -- > 1.7.1 > > > ------------------------------------------------------------------------------ > LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial > Remotely access PCs and mobile devices and provide instant support > Improve your efficiency, and focus on delivering more value-add > services > Discover what IT Professionals Know. Rescue delivers > http://p.sf.net/sfu/logmein_12329d2d > _______________________________________________ > Ltp-list mailing list > Ltp-list@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/ltp-list > ------------------------------------------------------------------------------ LogMeIn Rescue: Anywhere, Anytime Remote support for IT. Free Trial Remotely access PCs and mobile devices and provide instant support Improve your efficiency, and focus on delivering more value-add services Discover what IT Professionals Know. Rescue delivers http://p.sf.net/sfu/logmein_12329d2d _______________________________________________ Ltp-list mailing list Ltp-list@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ltp-list