Date: Thu, 17 Dec 1998 13:40:00 -0800 (PST) From: "David G. Andersen" <danderse@cs.utah.edu> To: freebsd-bugs@FreeBSD.ORG Subject: Re: kern/8732: nfs mounts with 'intr' can cause system hang Message-ID: <199812172140.NAA14276@freefall.freebsd.org>
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The following reply was made to PR kern/8732; it has been noted by GNATS.
From: "David G. Andersen" <danderse@cs.utah.edu>
To: Alfred Perlstein <bright@hotjobs.com>
Cc: freebsd-gnats-submit@freebsd.org
Subject: Re: kern/8732: nfs mounts with 'intr' can cause system hang
Date: Thu, 17 Dec 1998 14:31:52 -0700 (MST)
Okay.. hrm. Want to try a different one?
Index: vfs_subr.c
===================================================================
RCS file: /n/marker/usr/lsrc/FreeBSD/CVS/src/sys/kern/vfs_subr.c,v
retrieving revision 1.174
diff -r1.174 vfs_subr.c
582,584c582,587
< tsleep((caddr_t)&vp->v_numoutput,
< slpflag | (PRIBIO + 1),
< "vinvlbuf", slptimeo);
---
> if (error = tsleep((caddr_t)&vp->v_numoutput,
> slpflag | (PRIBIO + 1),
> "vinvlbuf", slptimeo)) {
> splx(s);
> return (error);
> }
(Instead of just checking for EINTR, it returns on any error)
I managed to replicate the crash you had with my first patch, but it
took a lot more pounding for some reason. I haven't managed to crash
with this one yet, but who knows.
-Dave
Lo and Behold, Alfred Perlstein said:
> > On Thu, 17 Dec 1998, David G. Andersen wrote:
>
> whoa! nope, didn't work for me:
>
> crashed on the first mail delete:
>
> db> ps
> pid proc addr uid ppid pgrp flag stat wmesg wchan cmd
> 342 f6920d80 f6925000 1288 341 342 004006 2 pine
> 341 f6920ec0 f6922000 1288 340 341 004086 3 pause f69220f0 zsh
> 340 f6839040 f6917000 1288 339 340 000184 3 select f0299d2c screen-3.7.4
> 339 f6839540 f6908000 1288 335 339 004186 3 pause f69080f0 screen-3.7.4
> 335 f6920240 f6982000 1288 333 335 004086 3 pause f69820f0 zsh
> 334 f6920380 f697e000 1288 332 334 004086 3 ttyin f02725bc zsh
> 333 f69204c0 f6979000 1288 297 285 004086 3 select f0299d2c kvt
> 332 f6920600 f6974000 1288 297 285 004086 3 select f0299d2c kvt
> 331 f6920740 f6970000 1288 297 285 004086 3 select f0299d2c kioslave
> 330 f6920880 f696c000 1288 297 285 004086 3 select f0299d2c kioslave
> 314 f6920b00 f692b000 1288 1 285 004186 3 nanslp f0272518 kblob.kss
> 309 f6838f00 f691a000 1288 295 285 004086 3 nanslp f0272518 maudio
> 301 f6839180 f6913000 1288 293 285 004086 3 select f0299d2c kpanel
> 300 f68392c0 f690f000 1288 292 285 004086 3 select f0299d2c krootwm
> 299 f6839400 f690c000 1288 291 285 004086 3 select f0299d2c kbgndwm
> 297 f6839680 f6902000 1288 289 285 004086 3 select f0299d2c kfm
> 296 f68397c0 f68ff000 1288 288 285 004086 3 select f0299d2c kwmsound
> 295 f6839900 f68fc000 1288 287 285 004086 3 nanslp f0272518 kaudioserver
> 293 f6839b80 f68f5000 1288 286 285 000086 3 wait f6839b80 sh
> 292 f6839cc0 f68f2000 1288 286 285 000086 3 wait f6839cc0 sh
> 291 f6839e00 f68ef000 1288 286 285 000086 3 wait f6839e00 sh
> 289 f683a080 f68e8000 1288 286 285 000086 3 wait f683a080 sh
> 288 f683a1c0 f68e5000 1288 286 285 000086 3 wait f683a1c0 sh
> 287 f683a300 f68e2000 1288 286 285 000086 3 wait f683a300 sh
> 286 f683a440 f68df000 1288 285 285 004086 3 select f0299d2c kwm
> 285 f683a580 f68da000 1288 283 285 004086 3 wait f683a580 sh
> 284 f683a6c0 f68cb000 1288 283 284 004184 3 select f0299d2c Xaccel
> 283 f683a800 f68c9000 1288 278 278 004086 3 wait f683a800 xinit
> 278 f683a940 f68c4000 1288 264 278 004086 3 wait f683a940 sh
> 277 f683aa80 f68c2000 0 273 277 004086 3 ttyin f0294610 cat
> 273 f683abc0 f68bf000 0 271 273 004086 3 pause f68bf0f0 zsh
> 271 f683ad00 f68bb000 0 263 271 004086 3 pause f68bb0f0 csh
> 270 f683ae40 f68b4000 0 1 270 004086 3 ttyin f029797c getty
> 269 f683af80 f68ae000 0 1 269 004086 3 ttyin f0297888 getty
> 268 f683b0c0 f68ab000 0 1 268 004086 3 ttyin f0297794 getty
> 267 f683b200 f68a8000 0 1 267 004086 3 ttyin f02976a0 getty
> 266 f683b5c0 f6897000 0 1 266 004086 3 ttyin f02975ac getty
> 265 f683b700 f6894000 0 1 265 004086 3 ttyin f02974b8 getty
> 264 f683c880 f6850000 1288 1 264 004086 3 pause f68500f0 zsh
> 263 f683c9c0 f684c000 1288 1 263 004086 3 pause f684c0f0 zsh
> 235 f683b340 f689f000 0 1 235 000084 3 select f0299d2c sshd1
> 193 f683b840 f6890000 0 1 193 000084 2 moused
> 157 f683b980 f688d000 0 1 157 000184 3 select f0299d2c sendmail
> 154 f683bac0 f6888000 0 1 154 000084 3 select f0299d2c lpd
> 150 f683bc00 f6884000 0 1 150 000084 3 nanslp f0272518 cron
> 147 f683c240 f6875000 0 1 147 000084 3 select f0299d2c inetd
> 125 f683bd40 f6881000 0 1 120 000084 3 nfsrcvlk f686ccc0 nfsiod
> 124 f683be80 f687e000 0 1 120 000084 3 nfsrcvlk f686ccc0 nfsiod
> 123 f683bfc0 f687b000 0 1 120 000084 3 nfsrcvlk f686ccc0 nfsiod
> 122 f683c100 f6878000 0 1 120 000004 3 sbwait f6660e04 nfsiod
> 109 f683c380 f6872000 1 1 109 000184 3 select f0299d2c portmap
> 100 f683c4c0 f6861000 0 1 100 000084 3 select f0299d2c syslogd
> 33 f683c740 f685b000 0 1 33 000084 3 pause f685b0f0 adjkerntz
> 26 f683c600 f685e000 0 1 26 000084 3 mfsidl f6835700 mount_mfs
> 4 f683cb00 f6847000 0 0 0 000204 3 syncer f0299cdc syncer
> 3 f683cc40 f6845000 0 0 0 000204 3 psleep f02925e4 vmdaemon
> 2 f683cd80 f6843000 0 0 0 000204 3 psleep f0265370 pagedaemon
> 1 f683cec0 f6841000 0 0 1 004084 3 wait f683cec0 init
> 0 f0299038 f02e8000 0 0 0 000204 3 sched f0299038 swapper
> 290 f6839f40 f68ec000 1288 286 285 002006 5 sh
>
> my window manager settings got hosed as well. *grrr*
>
> thanks for the attempt though.
>
> Alfred Perlstein - Programmer, HotJobs Inc. - www.hotjobs.com
> -- There are operating systems, and then there's FreeBSD.
> -- http://www.freebsd.org/ 3.0-current
>
--
work: danderse@cs.utah.edu me: angio@pobox.com
University of Utah http://www.angio.net/
Department of Computer Science
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