Date: Sun, 8 Feb 2009 15:58:44 GMT From: "Arno J. Klaassen" <arno@heho.snv.jussieu.fr> To: freebsd-gnats-submit@FreeBSD.org Subject: kern/131506: pipes in forked procs sometimes hang under Linux emulation 2.6.16 Message-ID: <200902081558.n18Fwi2P057835@www.freebsd.org> Resent-Message-ID: <200902081600.n18G096n001320@freefall.freebsd.org>
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>Number: 131506
>Category: kern
>Synopsis: pipes in forked procs sometimes hang under Linux emulation 2.6.16
>Confidential: no
>Severity: serious
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Feb 08 16:00:08 UTC 2009
>Closed-Date:
>Last-Modified:
>Originator: Arno J. Klaassen
>Release: head
>Organization:
SCITO SA
>Environment:
FreeBSD m37 8.0-CURRENT FreeBSD 8.0-CURRENT #1: Sun Feb 8 02:55:14 CET 2009 toor@m37:/usr/obj/raid1/bsd/src-current/sys/SEMPRON64 amd64
>Description:
portinstall gentoo-stage3
chroot /usr/local/gentoo-stage3
emerge libIDL
it will hang on the following output :
libIDL 0.8.11 configuration complete
C Preprocessor: "i486-pc-linux-gnu-gcc -E"
Standard input supported.
bison -y -d -v 2>/dev/null ./parser.y
in a freebsd-shell all implied procs ar in ppwiat or piperd state :
# ps axlww | fgrep 410
0 4104 1659 0 76 0 2576 1748 ppwait D+ 0 0:00.03 make (gmake)
0 4105 4104 0 76 0 3316 2548 wait I+ 0 0:00.01 /bin/sh -c bison -y -d -v 2>/dev/null ./parser.y (bash)
0 4106 4105 0 76 0 3044 2008 ppwait D+ 0 0:00.03 bison -y -d -v ./parser.y
0 4107 4106 0 76 0 2432 1532 piperd I+ 0 0:00.01 /usr/bin/m4 /usr/share/bison/m4sugar/m4sugar.m4 - /usr/share/bison/yacc.c
0 4118 1392 0 44 0 6000 2416 - R+ 1 0:00.00 fgrep 410 (bash)
NB, for some specific input-files 'i486-linux-gcc -pipe ' exhibits
the same behaviour but most often works OK
>How-To-Repeat:
portinstall gentoo-stage3
chroot /usr/local/gentoo-stage3
emerge libIDL
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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