Re: 2.6.20-mm2

["Michal Piotrowski" <michal.k.k.piotrowski@gmail.com>]

On 19/02/07, Rafael J. Wysocki <rjw@sisk.pl> wrote:
> On Sunday, 18 February 2007 20:43, Andrew Morton wrote:
> > On Sun, 18 Feb 2007 13:44:54 +0100 "Rafael J. Wysocki" <rjw@sisk.pl> wrote:
> >
> > > On Sunday, 18 February 2007 06:51, Andrew Morton wrote:
> > > >
> > > > Temporarily at
> > > >
> > > >   http://userweb.kernel.org/~akpm/2.6.20-mm2/
> > > >
> > > > Will appear later at
> > > >
> > > >  ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.20/2.6.20-mm2/
> > >
> > > Two problems:
> > >
> > > 1) A showstopper with the root partition on RAID1:
> > >
> > > md: raid1 personality registered for level 1
> > > [--snip--]
> > > md: multipath personality registered for level -4
> > > register_blkdev: failed to get major for mdp
> > > [--snip--]
> > > VFS: Cannot open root device "md1" or unknown-block(0,0)
> >
> > Someone else reported that against mainline.  Can you please debug it a bit?
>
> Sure, tomorrow I will.
>
> > I'd suggested reverting the recent changes in there:
> >
> > --- a/block/genhd.c~a
> > +++ a/block/genhd.c
> > @@ -61,14 +61,6 @@ int register_blkdev(unsigned int major,
> >       /* temporary */
> >       if (major == 0) {
> >               for (index = ARRAY_SIZE(major_names)-1; index > 0; index--) {
> > -                     /*
> > -                      * Disallow the LANANA-assigned LOCAL/EXPERIMENTAL
> > -                      * majors
> > -                      */
> > -                     if ((60 <= index && index <= 63) ||
> > -                                     (120 <= index && index <= 127) ||
> > -                                     (240 <= index && index <= 254))
> > -                             continue;
> >                       if (major_names[index] == NULL)
> >                               break;
> >               }
> > _
> >
> > but I don't see how they could cause this.
> >
> >
> > > At the moment I have no serial console attached to the box, so I had to rewrite
> > > the messages manually.
> >
> > netconsole is good.
>
> I know. :-)
>
> In the meantime, I've got something worse on another x86_64 box:
>
> Asus Laptop ACPI Extras version 0.30
>   L5D model detected, supported
> audit(1171831698.918:2): audit_pid=4281 old=0 by auid=4294967295
> general protection fault: 0000 [2] PREEMPT
> last sysfs file: /class/net/eth2/carrier
> CPU 0
> Modules linked in: af_packet ipv6 snd_pcm_oss snd_mixer_oss snd_seq snd_seq_device asus_acpi backlight button battery ac dm_mod pcmr
> Pid: 178, comm: pdflush Not tainted 2.6.20-mm2 #1
> RIP: 0010:[<ffffffff8034bce4>]  [<ffffffff8034bce4>] __make_request+0x134/0x370
> RSP: 0000:ffff81005ed659a0  EFLAGS: 00010297
> RAX: 00000000ffffffff RBX: 6b6b6b6b6b6b6b6b RCX: 000000000203396a
> RDX: 0000000100000000 RSI: ffff810037b4dbb0 RDI: ffff81004683d8c0
> RBP: ffff81005ed659f0 R08: ffff81004683d070 R09: ffff81003d333cc0
> R10: 0000000000000000 R11: 0000000000000000 R12: ffff810037b4dbb0
> R13: ffff81005daba3f0 R14: ffff810037daca90 R15: ffff81005daba3d0
> FS:  00002ad4a29e6d00(0000) GS:ffffffff805db000(0000) knlGS:0000000000000000
> CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
> CR2: 00002b6a345aa000 CR3: 0000000056585000 CR4: 00000000000006e0
> Process pdflush (pid: 178, threadinfo ffff81005ed64000, task ffff810037b060c0)
> Stack:  ffff810002852540 0000000000000001 ffff810037b4dbb0 ffffffff8026be21
>  ffff81005ed65a40 0000000000000008 ffff810037b4dbb0 0000000000000800
>  0000000000000008 ffff8100021d94e0 ffff81005ed65a40 ffffffff80348e7c
> Call Trace:
>  [<ffffffff8026be21>] mempool_alloc_slab+0x11/0x20
>  [<ffffffff80348e7c>] generic_make_request+0x1ec/0x230
>  [<ffffffff8034b7e6>] submit_bio+0xf6/0x110
>  [<ffffffff802b60f0>] submit_bh+0x100/0x130
>  [<ffffffff802b788a>] __block_write_full_page+0x1ca/0x2e0
>  [<ffffffff802bc040>] blkdev_get_block+0x0/0x70
>  [<ffffffff802bc040>] blkdev_get_block+0x0/0x70
>  [<ffffffff802b7a93>] block_write_full_page+0xf3/0x110
>  [<ffffffff802baeb3>] blkdev_writepage+0x13/0x20
>  [<ffffffff8026eb85>] __writepage+0x15/0x40
>  [<ffffffff8026f1e3>] write_cache_pages+0x1f3/0x360
>  [<ffffffff8026eb70>] __writepage+0x0/0x40
>  [<ffffffff8026f372>] generic_writepages+0x22/0x30
>  [<ffffffff8026f3c6>] do_writepages+0x46/0x80
>  [<ffffffff802b1f67>] __writeback_single_inode+0x1d7/0x370
>  [<ffffffff802b2355>] generic_sync_sb_inodes+0x35/0x2b0
>  [<ffffffff802b24f9>] generic_sync_sb_inodes+0x1d9/0x2b0
>  [<ffffffff802b29f2>] writeback_inodes+0x82/0x100
>  [<ffffffff802b25f5>] sync_sb_inodes+0x25/0x30
>  [<ffffffff802b2a08>] writeback_inodes+0x98/0x100
>  [<ffffffff8026fd40>] pdflush+0x0/0x1e0
>  [<ffffffff8026f934>] wb_kupdate+0x94/0x110
>  [<ffffffff8026fe68>] pdflush+0x128/0x1e0
>  [<ffffffff8026f8a0>] wb_kupdate+0x0/0x110
>  [<ffffffff8026fd40>] pdflush+0x0/0x1e0
>  [<ffffffff80240863>] kthread+0xd3/0x110
>  [<ffffffff80240700>] keventd_create_kthread+0x0/0x90
>  [<ffffffff8020a3f8>] child_rip+0xa/0x12
>  [<ffffffff80483e5b>] _spin_unlock_irq+0x2b/0x60
>  [<ffffffff80209fb0>] restore_args+0x0/0x30
>  [<ffffffff80240790>] kthread+0x0/0x110
>  [<ffffffff8020a3ee>] child_rip+0x0/0x12
>
>
> Code: 48 8b 43 08 0f 18 08 49 39 dd 75 a2 49 8b be 38 02 00 00 e8
> RIP  [<ffffffff8034bce4>] __make_request+0x134/0x370
>  RSP <ffff81005ed659a0>
> PM: Adding info for No Bus:vcs10
> PM: Adding info for No Bus:vcsa10
>
> It looks _really_ bad to me. :-(
>

It looks familiar to me

http://www.ussg.iu.edu/hypermail/linux/kernel/0702.2/0646.html
http://www.ussg.iu.edu/hypermail/linux/kernel/0702.2/0821.html

Regards,
Michal

-- 
Michal K. K. Piotrowski
LTG - Linux Testers Group (PL)
(http://www.stardust.webpages.pl/ltg/)
LTG - Linux Testers Group (EN)
(http://www.stardust.webpages.pl/linux_testers_group_en/)