Date: Fri, 6 Feb 2004 16:09:02 +0200 From: Ion-Mihai Tetcu <itetcu@apropo.ro> To: freebsd-current@freebsd.org Subject: Re: FreeBSD 5.2C: LOR - 1st 0xca738038 filedesc structure (filedescstructure) @ Message-ID: <20040206160902.69da539f@it.buh.cameradicommercio.ro> In-Reply-To: <Law9-F94nBKSpQRVH8g0001d95b@hotmail.com> References: <Law9-F94nBKSpQRVH8g0001d95b@hotmail.com>
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On Tue, 27 Jan 2004 04:35:31 -0500
"Mike Schreckengost" <mrpolitics@hotmail.com> wrote:
> Hi Peter,
> I also see similar LOR messages (w/ backtraces) from time to time on my
> FreeBSD 5.2-CURRENT system. I also use an SMP machine (2 AMD Athlon-MP 2100+
> processors), I don't know if this is related to the problem or not. Anyways,
> if you discover any helpful information, I would be delighted if you'd share
> it. :)
>
> Thanks in advance,
> Mike
Hi,
I've got the following yesterday, doing nothing specially afaik. Sources
about 23 Jan, kernel with ULE, SMP (UP machine), apic, invariants and
witness. If there's anything more I can do, please let me know.
lock order reversal
1st 0xc6698138 filedesc structure (filedesc structure) @ /usr/src/sys/kern/sys_
generic.c:1070
2nd 0xc06ddd00 Giant (Giant) @ /usr/src/sys/fs/specfs/spec_vnops.c:377
Stack backtrace:
backtrace(c068cb42,c06ddd00,c0688b03,c0688b03,c068416f) at backtrace+0x17
witness_lock(c06ddd00,8,c068416f,179,c070d73c) at witness_lock+0x6f0
_mtx_lock_flags(c06ddd00,0,c068416f,179,c068d153) at _mtx_lock_flags+0xcc
spec_poll(d9af2b48,d9af2b68,c054e5bc,d9af2b48,c06d4900) at spec_poll+0x114
spec_vnoperate(d9af2b48,c06d4900,c45e4c30,40,c64d3580) at spec_vnoperate+0x18
vn_poll(c66e9000,40,c64d3580,c66fb690,c64d3580) at vn_poll+0x3c
pollscan(c66fb690,d9af2bd8,2,3e6,10) at pollscan+0xa8
poll(c66fb690,d9af2d14,c06a2b4e,3ee,3) at poll+0x242
syscall(2f,2f,2f,bfbfd340,bfbfd2a8) at syscall+0x292
Xint0x80_syscall() at Xint0x80_syscall+0x1d
--- syscall (209), eip = 0x28c73a2f, esp = 0xbfbfd26c, ebp = 0xbfbfd2c8 ---
# uname -a
FreeBSD it.buh.cameradicommercio.ro 5.2-CURRENT FreeBSD
5.2-CURRENT #0: Mon Jan 26 14:24:42 EET 2004
itetcu@it.buh.cameradicommercio.ro:/usr/obj/usr/src/sys/ULE1 i386
machine i386
cpu I686_CPU
ident ULE1
options CPU_ATHLON_SSE_HACK
options HZ=1000
options NPX_DEBUG
makeoptions DEBUG=-g #Build kernel with gdb(1) debug symbols
options BREAK_TO_DEBUGGER
#options SCHED_4BSD #4BSD scheduler
options SCHED_ULE #firts try, huh :)
options INET #InterNETworking
options INET6 #IPv6 communications protocols
options FFS #Berkeley Fast Filesystem
options SOFTUPDATES #Enable FFS soft updates support
options UFS_ACL #Support for access control lists
options UFS_DIRHASH #Improve performance on big directories
options MD_ROOT #MD is a potential root device
options NFSCLIENT #Network Filesystem Client
options NFSSERVER #Network Filesystem Server
options NFS_ROOT #NFS usable as /, requires NFSCLIENT
options MSDOSFS #MSDOS Filesystem
options CD9660 #ISO 9660 Filesystem
options PROCFS #Process filesystem (requires PSEUDOFS)
options PSEUDOFS #Pseudo-filesystem framework
options COMPAT_43 #Compatible with BSD 4.3 [KEEP THIS!]
options COMPAT_FREEBSD4 #Compatible with FreeBSD4
options SCSI_DELAY=15000 #Delay (in ms) before probing SCSI
options KTRACE #ktrace(1) support
options SYSVSHM #SYSV-style shared memory
options SYSVMSG #SYSV-style message queues
options SYSVSEM #SYSV-style semaphores
options _KPOSIX_PRIORITY_SCHEDULING #Posix P1003_1B real-time extensions
options KBD_INSTALL_CDEV # install a CDEV entry in /dev
options AHC_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~128k to driver.
options AHD_REG_PRETTY_PRINT # Print register bitfields in debug
# output. Adds ~215k to driver.
options IPFIREWALL_VERBOSE
# Debugging for use in -current
options DDB #Enable the kernel debugger
options INVARIANTS #Enable calls of extra sanity checking
options INVARIANT_SUPPORT #Extra sanity checks of internal structures, required by INVARIANTS
options WITNESS #Enable checks to detect deadlocks and cycles
#options WITNESS_SKIPSPIN #Don't run witness on spinlocks for speed
# To make an SMP kernel, the next two are needed
options SMP # Symmetric MultiProcessor Kernel
device apic # I/O APIC
....
--
IOnut
Unregistered ;) FreeBSD user
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