[PATCH] make nsswitch and libwbclient thread safe / Coverity findings
Jeremy Allison
jra at samba.org
Fri Nov 9 20:00:49 UTC 2018
On Fri, Nov 09, 2018 at 12:31:39PM +0100, Volker Lendecke via samba-technical wrote:
> On Fri, Nov 09, 2018 at 11:42:15AM +0100, Ralph Wuerthner via samba-technical wrote:
> > Hi!
> >
> > Volker pointed me to two Coverity findings in stress-nss-libwbclient.c.
> > Please see attached patchset to address these findings.
>
> RB+. Another one?
LGTM. RB+ and pushed !
> >
> > On 31.10.18 19:50, Jeremy Allison via samba-technical wrote:
> > > On Wed, Oct 31, 2018 at 07:46:26PM +0100, Andreas Schneider via samba-technical wrote:
> > > > On Monday, 29 October 2018 18:29:21 CET Jeremy Allison wrote:
> > > > > On Mon, Oct 29, 2018 at 05:28:37PM +0100, Volker Lendecke via samba-
> > > > technical wrote:
> > > > > > On Mon, Oct 29, 2018 at 09:20:57AM -0700, Jeremy Allison wrote:
> > > > > > > Ping for Ralph and Volker.
> > > > > > >
> > > > > > > I'd love to get this into master if you both are
> > > > > > > happy with it !
> > > > > >
> > > > > > Ralph has found that the nss_wrapper needs some fixes. Attached find
> > > > > > my patchset with my Reviewed-By: (really just finished). We can't put
> > > > > > that into Samba, because the nss_wrapper piece needs to wait for the
> > > > > > nss_wrapper team to get to the point where they have enough patches to
> > > > > > justify a release. Then we need a patch to upgrade the in-tree
> > > > > > nss_wrapper copy, and *then* we can start thinking about putting this
> > > > > > into Samba. We will start working on that process asap.
> > > > >
> > > > > Ah, the perils of depending on third-party :-).
> > > > >
> > > > > Pinging Andreas.... !
> > > >
> > > > A new nss_wrapper version is in autobuild. I guess you need to rebase that
> > > > patchset once it lands in master and then push it.
> > >
> > > Will do, thanks !
> > >
> >
> > --
> > Regards
> >
> > Ralph
>
> > From d204f1013650bfd74fa7bbdcf3fe501586db8fce Mon Sep 17 00:00:00 2001
> > From: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
> > Date: Fri, 9 Nov 2018 08:58:31 +0100
> > Subject: [PATCH 1/2] nsswitch: Fix CID 1441072 Error handling issues
> > (CHECKED_RETURN)
> >
> > Signed-off-by: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
> > ---
> > nsswitch/stress-nss-libwbclient.c | 8 +++++++-
> > 1 file changed, 7 insertions(+), 1 deletion(-)
> >
> > diff --git a/nsswitch/stress-nss-libwbclient.c b/nsswitch/stress-nss-libwbclient.c
> > index cf85ff3..740ad0e 100644
> > --- a/nsswitch/stress-nss-libwbclient.c
> > +++ b/nsswitch/stress-nss-libwbclient.c
> > @@ -118,7 +118,13 @@ int main(int argc, char *argv[])
> >
> > state.username = argv[1];
> > state.timeout = time(NULL) + RUNTIME;
> > - pthread_mutex_init(&state.lock, NULL);
> > + rc = pthread_mutex_init(&state.lock, NULL);
> > + if (rc != 0) {
> > + fprintf(stderr,
> > + "pthread_mutex_init failed: %s\n",
> > + strerror(rc));
> > + exit(1);
> > + }
> > state.fail = false;
> > state.nss_loop_count = 0;
> > state.wbc_loop_count = 0;
> > --
> > 2.7.4
> >
> >
> > From 2c140c1876f53ed51ddfbd453df640879c344927 Mon Sep 17 00:00:00 2001
> > From: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
> > Date: Fri, 9 Nov 2018 09:01:29 +0100
> > Subject: [PATCH 2/2] nsswitch: Fix CID 1441070 Error handling issues
> > (CHECKED_RETURN)
> >
> > Signed-off-by: Ralph Wuerthner <ralph.wuerthner at de.ibm.com>
> > ---
> > nsswitch/stress-nss-libwbclient.c | 9 ++++++++-
> > 1 file changed, 8 insertions(+), 1 deletion(-)
> >
> > diff --git a/nsswitch/stress-nss-libwbclient.c b/nsswitch/stress-nss-libwbclient.c
> > index 740ad0e..df1d85c 100644
> > --- a/nsswitch/stress-nss-libwbclient.c
> > +++ b/nsswitch/stress-nss-libwbclient.c
> > @@ -149,7 +149,14 @@ int main(int argc, char *argv[])
> >
> > /* wait for query threads to terminate */
> > for (n = 0; n < 2; n++) {
> > - pthread_join(threads[n], NULL);
> > + rc = pthread_join(threads[n], NULL);
> > + if (rc != 0) {
> > + fprintf(stderr,
> > + "joining query thread %i failed: %s\n",
> > + n,
> > + strerror(rc));
> > + exit(1);
> > + }
> > }
> >
> > fprintf(state.fail ? stderr: stdout,
> > --
> > 2.7.4
> >
>
>
> --
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