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SubjectRe: PROBLEM: doing a dd to a dbfile
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Hi Jeff

Thanks for the help, i've published the image at:

http://egw.servebeer.com/vmlinux.bz2


Thanks & Regards

--
Ing. Raúl Alvarez Aguileta <l0rd4gu1@icontrol.com.mx>
Red de Control Corporativo

On Thu, 2005-06-02 at 15:19 -0400, Jeff Mahoney wrote:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Ing. Raúl Alvarez Aguileta wrote:
> > Hi
> >
> > I've a corruption problem with one innodb file, when i'm trying to
> > recover a corrupted file (it's filled with no data at byte 524288+, but
> > it have valid info later [aprox 4mb ahead] ) with:
> >
> > # dd if=/dev/zero of=ibdata1 bs=1 seek=524288 count=4194304 conv=notrunc
> >
> > the command ends dumping the folllowing message:
> >
> > output from /var/log/messages
> > ---->
> > Jun 1 18:43:07 g4nd4lf Kernel BUG at file:534
> > Jun 1 18:43:07 g4nd4lf invalid operand: 0000 [1] SMP
> > Jun 1 18:43:07 g4nd4lf CPU 0
> > Jun 1 18:43:07 g4nd4lf Modules linked in: ipt_LOG ipt_state
> > iptable_filter ip_tables ip_conntrack_tftp ip_conntrack_irc
> > ip_conntrack_ftp ip_conntrack_amanda ip_conntrack amd74xx sd_mod aic79xx
> > mptctl mptscsih mptbase sata_sx4 sata_promise libata usb_storage
> > ide_core scsi_mod ohci_hcd uhci_hcd ehci_hcd usbcore
> > Jun 1 18:43:07 g4nd4lf Pid: 8993, comm: dd Not tainted 2.6.11-gentoo-r9
> > Jun 1 18:43:07 g4nd4lf RIP: 0010:[<ffffffff801a9372>]
> > <ffffffff801a9372>{reiserfs_file_write+5298}
> > Jun 1 18:43:07 g4nd4lf RSP: 0018:ffff81007c273ba8 EFLAGS: 00010246
> > Jun 1 18:43:08 g4nd4lf RAX: 0000000001000020 RBX: 0000000000000000 RCX:
> > 0000000000000001
> > Jun 1 18:43:08 g4nd4lf RDX: ffff810002b04038 RSI: ffff81007c26e670 RDI:
> > ffff81007c273d98
> > Jun 1 18:43:08 g4nd4lf RBP: ffff81007e8bbdf0 R08: 0000000000000000 R09:
> > ffff810002c13c80
> > Jun 1 18:43:08 g4nd4lf R10: ffff81007fdd8ec0 R11: ffff81007e8bbdf0 R12:
> > 0000000000000001
> > Jun 1 18:43:08 g4nd4lf R13: 0000000000000000 R14: ffff81007c26e670 R15:
> > ffff81007e8c0678
> > Jun 1 18:43:08 g4nd4lf FS: 00002aaaaade7b00(0000)
> > GS:ffffffff803ed880(0000) knlGS:0000000000000000
> > Jun 1 18:43:08 g4nd4lf CS: 0010 DS: 0000 ES: 0000 CR0:
> > 000000008005003b
> > Jun 1 18:43:08 g4nd4lf CR2: 00002aaaaac4d3e0 CR3: 000000007c267000 CR4:
> > 00000000000006e0
> > Jun 1 18:43:08 g4nd4lf Process dd (pid: 8993, threadinfo
> > ffff81007c272000, task ffff81007f6fa1b0)
> > Jun 1 18:43:08 g4nd4lf Stack: 0000000000000286 ffff81000000d680
> > 0000000000000000 ffff81007c26e730
> > Jun 1 18:43:08 g4nd4lf 0000000100000000 000000000008cfff
> > 00000000000080d2 0000000000000000
> > Jun 1 18:43:08 g4nd4lf 0000000000000000 0000000000000001
> > Jun 1 18:43:08 g4nd4lf Call Trace:<ffffffff80145f9e>{buffered_rmqueue
> > +654} <ffffffff801527ab>{do_no_page+939}
> > Jun 1 18:43:08 g4nd4lf <ffffffff8010de4d>{error_exit+0}
> > <ffffffff8018b88f>{inotify_inode_queue_event+47}
> > Jun 1 18:43:08 g4nd4lf <ffffffff801f1160>{read_zero+480}
> > <ffffffff80164669>{vfs_write+233}
> > Jun 1 18:43:08 g4nd4lf <ffffffff801647f3>{sys_write+83}
> > <ffffffff8010d44a>{system_call+126}
> > Jun 1 18:43:08 g4nd4lf
> > Jun 1 18:43:08 g4nd4lf
> > Jun 1 18:43:08 g4nd4lf Code: 0f 0b 8b f1 2d 80 ff ff ff ff 16 02 8b 02
> > 4c 8b 42 10 f6 c4
> > Jun 1 18:43:08 g4nd4lf RIP <ffffffff801a9372>{reiserfs_file_write+5298}
> > RSP <ffff81007c273ba8>
> > <----
> >
> > # sh /usr/src/linux/scripts/ver_linux
> > ---->
> > If some fields are empty or look unusual you may have an old version.
> > Compare to the current minimal requirements in Documentation/Changes.
> >
> > Linux g4nd4lf 2.6.11-gentoo-r9 #1 SMP Wed May 18 07:53:38 CDT 2005
> > x86_64 AMD Opteron(tm) Processor 250 AuthenticAMD GNU/Linux
>
> Ok, this trace maps to page_buffers() in
> reiserfs_allocate_blocks_for_region(), specifically the BUG_ON
> (!PagePrivate(page)) check inside it. Somehow, the buffers associated
> with that page are getting freed, despite it being locked.
>
> Just to double check that the page it's checking is valid - could you
> post your vmlinux somewhere or send it to me off list? I'd like to check
> the Oops against the disassembly.
>
> - -Jeff
>
> - --
> Jeff Mahoney
> SuSE Labs
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