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SubjectRe: 2.6.16-rc1-mm4 i386 atomic operations broken on SMP (in modules at least)
On Thu, 2 Feb 2006 12:50:19 +1100, Neil Brown <neilb@suse.de> wrote:

> On Thursday February 2, jamagallon@able.es wrote:
> > On Thu, 2 Feb 2006 12:19:22 +1100, Neil Brown <neilb@suse.de> wrote:
> >
> > >
> > > I've been testing md/raid in 2.6.16-rc1-mm4 on a dual Xeon with most
> > > of the md personalities compiled as modules, and weird stuff if
> > > happening.
> > >
> > > In particular I'm getting lots of
> > >
> > > BUG: atomic counter underflow at:
> > >
> > > reports in raid10 and raid5, which are modules.
> > >
> > >
> >
> > I also run this kernel (plus a couple patches) on a SATA raid5 setup, and
> > had no problems. People throws and gets files via SMB/AFP, mainly.
> >
> > My box is dual PIII@933.
>
> Is 'raid5' a module, or is it compiled in?
>

nada:/usr/src/linux# grep _MD_ .config
CONFIG_MD_LINEAR=y
CONFIG_MD_RAID0=y
CONFIG_MD_RAID1=y
CONFIG_MD_RAID10=y
CONFIG_MD_RAID5=y
CONFIG_MD_RAID6=y
CONFIG_MD_MULTIPATH=m
# CONFIG_MD_FAULTY is not set

nada:/usr/src/linux# lsmod
Module Size Used by
w83627hf 22512 0
hwmon_vid 2016 1 w83627hf
i2c_isa 3392 1 w83627hf
i2c_viapro 7188 0
i2c_core 16640 3 w83627hf,i2c_isa,i2c_viapro
snd_ens1371 18656 0
snd_rawmidi 17312 1 snd_ens1371
snd_ac97_codec 87744 1 snd_ens1371
snd_ac97_bus 1760 1 snd_ac97_codec
snd_pcm 72772 2 snd_ens1371,snd_ac97_codec
snd_timer 18724 1 snd_pcm
snd_page_alloc 7784 1 snd_pcm
snd 38104 5 snd_ens1371,snd_rawmidi,snd_ac97_codec,snd_pcm,snd_timer
e100 31620 0
ide_cd 35264 0
loop 11816 0
via82cxxx 8132 0 [permanent]
ide_core 109844 2 ide_cd,via82cxxx
via_agp 7584 1
agpgart 25352 1 via_agp
microcode 5592 0
sata_promise 8868 7
libata 63956 1 sata_promise
uhci_hcd 20044 0
sg 20984 0
st 34880 0
sr_mod 14020 0
cdrom 34320 2 ide_cd,sr_mod

nada:/usr/src/linux# grep BUG /var/log/syslog
nada:/usr/src/linux# grep BUG /var/log/messages
nada:/usr/src/linux#

;)

--
J.A. Magallon <jamagallon()able!es> \ Software is like sex:
werewolf!able!es \ It's better when it's free
Mandriva Linux release 2006.1 (Cooker) for i586
Linux 2.6.15-jam7 (gcc 4.0.2 (4.0.2-1mdk for Mandriva Linux release 2006.1))
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