J. Bruce Fields wrote:
On Wed, May 16, 2007 at 08:55:19AM -0500, Roger Heflin wrote:
Running bonnie over nfs on a RHEL4.4 client against a 2.6.21.1 server
got me this crash after about 4 hours of running on the server:
This was running lvm -> ext3 -> nfs ---- nfsclient (RHEL4.4).
Yipes. Has this happened only once, or do you have a way to reliably
reproduce it?
I have not reproduced it yet, I will update if I do, I suspect
that I will be able to reproduce it, but it took several hours
of running.
Is it a new problem? (And, if so, what changed?)
New different tests.
May 15 21:10:31 vault1 kernel: ------------[ cut here ]------------
May 15 21:10:31 vault1 kernel: kernel BUG at mm/slab.c:2380!
That's the check_spinlock_acquired() in cache_alloc_refill(). What
causes that to fail?
May 15 21:10:31 vault1 kernel: invalid opcode: 0000 [1] SMP
May 15 21:10:31 vault1 kernel: CPU 0
May 15 21:10:31 vault1 kernel: Modules linked in: qla2xxx nfsd exportfs
lockd nfs_acl sunrpc hidp l2cap bluetooth ipv6 cpufreq_ondemand jfs
dm_mirror dm_multipath dm_mod video sbs i2c_ec dock button battery
asus_acpi ac lp snd_intel8x0 snd_ac97_codec ac97_bus snd_seq_dummy
snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device sg snd_pcm_oss
floppy snd_mixer_oss snd_pcm cfi_cmdset_0002 cfi_util mtdpart snd_timer
jedec_probe cfi_probe gen_probe snd ck804xrom sata_nv mtdcore chipreg
i2c_nforce2 soundcore map_funcs libata snd_page_alloc pcspkr i2c_core
k8temp hwmon forcedeth ohci1394 ieee1394 parport_pc ide_cd parport cdrom
serio_raw scsi_transport_fc shpchp megaraid_mbox sd_mod scsi_mod
megaraid_mm ext3 jbd ehci_hcd ohci_hcd uhci_hcd
May 15 21:10:31 vault1 kernel: Pid: 4256, comm: nfsd Not tainted 2.6.21.1 #1
May 15 21:10:31 vault1 kernel: RIP: 0010:[<ffffffff8025a710>]
[<ffffffff8025a710>] cache_alloc_refill+0xe6/0x1f3
May 15 21:10:31 vault1 kernel: RSP: 0018:ffff81021dead6d0 EFLAGS: 00010002
May 15 21:10:31 vault1 kernel: RAX: 0000000000000001 RBX:
ffff81012211d960 RCX: ffff810120013040
May 15 21:10:31 vault1 kernel: RDX: 000000000000000e RSI:
ffff810139020000 RDI: ffff810120013040
There wasn't a backtrace?
--b.
That was all I had before it took the machine out, it is on a serial
console at this time, so if it happens again I should get better data.
Roger
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