Re: 2.6.22.14 oops msg with commvault galaxy ?

From: Dhaval Giani
Date: Tue Dec 11 2007 - 13:21:41 EST

On Tue, Dec 11, 2007 at 12:47:29PM -0500, Fortier,Vincent [Montreal] wrote:
> > -----Message d'origine-----
> > De : linux-kernel-owner@xxxxxxxxxxxxxxx
> > [mailto:linux-kernel-owner@xxxxxxxxxxxxxxx] De la part de Dhaval Giani
> >
> > On Tue, Dec 11, 2007 at 09:04:00AM -0800, Greg KH wrote:
> > > On Tue, Dec 11, 2007 at 10:13:19PM +0530, Dhaval Giani wrote:
> > > > On Tue, Dec 11, 2007 at 08:24:37PM +0530, Dhaval Giani wrote:
> > > > > On Mon, Dec 10, 2007 at 09:15:01AM -0800, Randy Dunlap wrote:
> > > > > > On Mon, 10 Dec 2007 09:03:17 -0500 Fortier,Vincent wrote:
> > > > > >
> > > > > > Ingo, can you look at this, please?
> > > > > > Vincent is getting oopses on 2.6.22.14-cfs-etch.
> > > > > >
> > > > >
> > > > > Hi,
> > > > >
> > > > > We are looking into this bug now. I believe that the patch at
> > > > > http://marc.info/?l=linux-kernel&m=119404922603293 should help.
> > > > >
> > > > > I am working with Kay to get this ported.
> > > > >
> > > >
> > > > Hi Vincent,
> > > >
> > > > Does the following patch help?
> > > >
> > > > Kay/Greg, could you please review and add your Signed-off-by(s) as
>
> > > > required?
> > >
> > > Um, why? What is this patch for? Where is it to be sent, to Linus
> > > for 2.6.24-final? Or to the -stable tree?
> > >
> >
> > Hi Greg,
> >
> > This is for 2.26.24-final, since Fair User scheduling is not
> > yet there in stable.
> >
> > > > This is basically a port of the patch at
> > > > http://marc.info/?l=linux-kernel&m=119404922603293
> > >
> > > Yeah, but that patch needs some other core kobject changes, right?
> > >
> >
> > Yep, there are some other changes that patch needed. We have
> > worked around them by using the existing functions in the
> > current Linus tree.
> >
> > > What exactly are you trying to fix here, the fact that this code
> never
> > > even worked?
> > >
> >
> > The code was not using the kobject API. Its been cleaned up now (I
> > hope!)
>
> It refused to apply cleanly on a 2.6.22.14 + CFS v24, only one failure
> occured. So I resolved it manually and attached the resulting diff.
>
> My tests with Galaxy 5.9 shows that it still does not work. Although,
> the error seems to have changed a bit (see attached dmesg)
>

Hmmm, makes me suspect the bug is somewhere else. What I am not able to
figure out is that I was able to recreate the trace you had on my
systems. So there is a bug somewhere there.

Could you send your config please?

> > > And, please, we need some documentation for Documenatation/ABI/ on
> > > exactly what these sysfs files and tree is for. Please add that now
>
> > > for Linus's tree.
> >
> > On to it, will send the patch asap.
> >
> > > confused,
> >
> > hope i helped (in clearing it :) )
>
> Should this patch eventually be included in?
> 2.6.25 ?
> 2.6.24 ?
> (-stable 2.6.23 & 2.6.22) || backport CFS v24 -> v25 ?
>

2.6.24 is what I believe, unless of course the bug lies elsewhere.

--
regards,
Dhaval

[ 638.466375] BUG: unable to handle kernel paging request at virtual address 80000000
[ 638.466479] printing eip:
[ 638.466527] c01d9182
[ 638.466574] *pdpt = 000000002d022001
[ 638.466622] *pde = 0000000000000000
[ 638.466672] Oops: 0000 [#1]
[ 638.466719] SMP
[ 638.466838] last sysfs file: /devices/platform/floppy.0/uevent
[ 638.466890] Modules linked in: xfs drbd cn nfs nfsd exportfs lockd nfs_acl sunrpc ppdev parport_pc lp parport button ac battery ipv6 fuse ide_cd ide_generic usbkbd usbmouse tsdev iTCO_wdt iTCO_vendor_support sg psmouse e752x_edac shpchp sr_mod pci_hotplug serio_raw edac_mc evdev pcspkr cdrom floppy ext3 jbd mbcache dm_mirror dm_snapshot dm_mod generic piix ide_core ata_piix ehci_hcd uhci_hcd tg3 usbcore thermal processor fan mptscsih mptbase megaraid_sas megaraid_mbox megaraid_mm cciss aacraid
[ 638.469273] CPU: 3
[ 638.469274] EIP: 0060:[<c01d9182>] Not tainted VLI
[ 638.469275] EFLAGS: 00010297 (2.6.22.14-cfs-etch-686-envcan #1)
[ 638.469444] EIP is at vsnprintf+0x2af/0x48c
[ 638.469504] eax: 80000000 ebx: ffffffff ecx: 80000000 edx: fffffffe
[ 638.469567] esi: ebc29017 edi: ed019eac ebp: ffffffff esp: ed019e4c
[ 638.469631] ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
[ 638.469693] Process clBackup (pid: 4849, ti=ed018000 task=f6674c60 task.ti=ed018000)
[ 638.469757] Stack: ec2a9000 00001000 c033b658 f899b56c c0236131 ec2a9000 143d6fe8 ebc29017
[ 638.470212] 00f9b608 00000000 ffffffff ffffffff 00000000 c0337ecb 00000003 00000017
[ 638.470665] c037a3a0 ec2a9000 c01d93e0 ed019eac ed019eac c02356ac ebc29017 c0337eca
[ 638.471129] Call Trace:
[ 638.471258] [<c0236131>] dev_uevent+0x189/0x1e0
[ 638.471377] [<c01d93e0>] sprintf+0x20/0x23
[ 638.471486] [<c02356ac>] show_uevent+0xad/0xd5
[ 638.471594] [<c0157189>] get_page_from_freelist+0x273/0x30a
[ 638.471713] [<c01323b4>] group_send_sig_info+0x12/0x56
[ 638.471822] [<c0157272>] __alloc_pages+0x52/0x286
[ 638.471930] [<c02355ff>] show_uevent+0x0/0xd5
[ 638.472034] [<c02351be>] dev_attr_show+0x15/0x18
[ 638.472138] [<c01a8e91>] sysfs_read_file+0x87/0xd8
[ 638.472240] [<c018807c>] sys_getxattr+0x46/0x4e
[ 638.472341] [<c01a8e0a>] sysfs_read_file+0x0/0xd8
[ 638.472445] [<c0171f77>] vfs_read+0xa6/0x128
[ 638.472551] [<c0172373>] sys_read+0x41/0x67
[ 638.472656] [<c0103d8a>] syscall_call+0x7/0xb
[ 638.472765] =======================
[ 638.472822] Code: 74 24 28 73 03 c6 06 20 4d 46 85 ed 7f f1 e9 b9 00 00 00 8b 0f b8 59 0a 33 c0 8b 54 24 2c 81 f9 ff 0f 00 00 0f 46 c8 89 c8 eb 06 <80> 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 f6 44 24 30 10 89 c3
[ 638.475660] EIP: [<c01d9182>] vsnprintf+0x2af/0x48c SS:ESP 0068:ed019e4c


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