Date: Thu, 25 May 2006 17:00:42 GMT From: Gea-Suan Lin <gslin@csie.nctu.edu.tw> To: freebsd-bugs@FreeBSD.org Subject: Re: bin/97768: NFS rpc.lockd will die automatically Message-ID: <200605251700.k4PH0g8x064355@freefall.freebsd.org>
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The following reply was made to PR bin/97768; it has been noted by GNATS. From: Gea-Suan Lin <gslin@csie.nctu.edu.tw> To: Craig Rodrigues <rodrigc@crodrigues.org> Cc: Gea-Suan Lin <gslin@csie.nctu.edu.tw>, bug-followup@freebsd.org Subject: Re: bin/97768: NFS rpc.lockd will die automatically Date: Fri, 26 May 2006 00:58:16 +0800 Hi, After this patch, they look good now. Is this some kind of race condition ? I mean, between kevent() returning "ok, you can write" and rpc.lockd calling write(), the connection fd=8 disappeared, then write() cause SIGPIPE. On Wed, May 24, 2006 at 12:35:43AM -0400, Craig Rodrigues wrote: > On Wed, May 24, 2006 at 12:19:48PM +0800, Gea-Suan Lin wrote: > > >Description: > > - rpc.lockd (uid = daemon) will die automatically on FreeBSD > > 6.0-RELEASE-p7, this is ktrace/kdump log: > > > > 58205 rpc.lockd CALL sendto(0x7,0xbfbfd940,0x48,0,0,0) > > 58205 rpc.lockd GIO fd 7 wrote 72 bytes > > "<27>May 24 03:02:10 rpc.lockd: Unable to return result to 140.113.209.21" > > 58205 rpc.lockd RET sendto 72/0x48 > > 58205 rpc.lockd CALL write(0x8,0xbfbfe680,0x20) > > 58205 rpc.lockd RET write -1 errno 32 Broken pipe > > 58205 rpc.lockd PSIG SIGPIPE SIG_DFL > > > Does this patch to rpc.lockd help? > > =================================================================== > RCS file: /home/ncvs/src/usr.sbin/rpc.lockd/kern.c,v > retrieving revision 1.17 > diff -u -u -r1.17 kern.c > --- kern.c 17 Nov 2005 12:19:19 -0000 1.17 > +++ kern.c 24 May 2006 04:25:05 -0000 > @@ -151,6 +151,7 @@ > > signal(SIGHUP, (sig_t)client_cleanup); > signal(SIGTERM, (sig_t)client_cleanup); > + signal(SIGPIPE, SIG_IGN); > > /* Setup. */ > (void)time(&owner.tod); -- * Gea-Suan Lin (public key: Using https://keyserver.pgp.com/ to search) * If you cannot convince them, confuse them. -- Harry S Truman
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