Re: Lock Order Reversal in nmount/unmount of devfs on NFS

2010-10-22 Thread Doug Barton
-BEGIN PGP SIGNED MESSAGE- Hash: SHA256 On 10/22/2010 11:47 AM, Kostik Belousov wrote: | The LORs are believed to be harmless. IMO the problem with that line of reasoning is that while any individual LOR may be harmless there are so many harmless ones that it leads to people either ignor

Re: Lock Order Reversal in nmount/unmount of devfs on NFS

2010-10-22 Thread Linda Messerschmidt
On Fri, Oct 22, 2010 at 2:47 PM, Kostik Belousov wrote: > The LORs are believed to be harmless. OK, I won't worry about it. I did check the list on sources.zabbadoz.net and didn't see any for nfs & devfs or nfs & syncer, so I just wanted to be sure. :) Thanks! __

Re: Lock Order Reversal in nmount/unmount of devfs on NFS

2010-10-22 Thread Kostik Belousov
On Fri, Oct 22, 2010 at 01:46:54PM -0400, Linda Messerschmidt wrote: > When mounting a devfs filesystem on top of a directory in an NFS > filesystem under 8.1-RELEASE-p1 r213075M, the following lock order > reversal is reported: > > lock order reversal: > 1st 0xc264bbdc nfs (n

Lock Order Reversal in nmount/unmount of devfs on NFS

2010-10-22 Thread Linda Messerschmidt
When mounting a devfs filesystem on top of a directory in an NFS filesystem under 8.1-RELEASE-p1 r213075M, the following lock order reversal is reported: lock order reversal: 1st 0xc264bbdc nfs (nfs) @ /usr/src/sys/kern/vfs_mount.c:1058 2nd 0xc264bce8 devfs (devfs) @ /usr/src/sys/kern

Re: kern/103307: lock order reversal

2006-09-16 Thread Bjoern A. Zeeb
On Fri, 15 Sep 2006, Duane Whitty wrote: lock order reversal: 1st 0xc06c6a40 cdev (cdev) @ /usr/src/sys/kern/kern_conf.c:61 2nd 0xc3281718 sleep mtxpool (sleep mtxpool) @ /usr/src/sys/kern/kern_prot.c:1877 looks like this one: http://sources.zabbadoz.net/freebsd/lor.html#187 I&#x

Re: lock order reversal

2006-09-16 Thread Duane Whitty
Duane Whitty wrote: Submitter-Id: current-users Originator: Duane Whitty Organization: Confidential: no Synopsis: lock order reversal Severity: serious Priority: medium Category: kern Class: sw-bug Release:FreeBSD 6.2-PRERELEASE i386 Environment

lock order reversal

2006-09-15 Thread Duane Whitty
>Submitter-Id: current-users >Originator:Duane Whitty >Organization: >Confidential: no >Synopsis: lock order reversal >Severity: serious >Priority: medium >Category: kern >Class: sw-bug >Release: FreeBSD 6.2-PRERELEASE i386

lock order reversal - in many places

2003-08-14 Thread Christoph Kukulies
11 11:16:04 kukubook kernel: malloc() of "DP fakepg" with the following non-sleepable locks held: Aug 11 11:16:04 kukubook kernel: exclusive sleep mutex ctl.mtx_api r = 0 (0xc2c1e18c) locked @ /home/home/kuku/NVIDIA-FreeBSD-x86-1.0-4365/src/nvidia_subr.c:753 Aug 11 11:16:52 kukubook ker

network interface lock order reversal question

2002-09-03 Thread Dominic Marks
from /usr/src/sys/pci/if_vr.c:659 /usr/src/sys/vm/uma_core.c:1332: could sleep with "vr0" locked from /usr/src/sys/pci/if_vr.c:659 lock order reversal 1st 0xc2667a90 vr0 (network driver) @ /usr/src/sys/pci/if_vr.c:659 2nd 0xc0488140 allproc (allproc) @ /usr/src/sys/kern/kern_fork.c