From: Artem Bityutskiy <dedekind1@gmail.com>
To: Jon Ringle <jon@ringle.org>
Cc: linux-mtd@lists.infradead.org, Deepak Saxena <dsaxena@mvista.com>
Subject: Re: Fail to mount ubifs
Date: Wed, 13 Jan 2010 09:55:36 +0200 [thread overview]
Message-ID: <1263369336.2917.6.camel@localhost> (raw)
In-Reply-To: <152584231001122303g66f776bdo57f6f08307f77dd0@mail.gmail.com>
On Wed, 2010-01-13 at 02:03 -0500, Jon Ringle wrote:
> I believe that there is an alignment problem due to the read function
> mapped to ixp4xx_read16.
>
> I enabled the following:
> CONFIG_MTD_UBI_DEBUG=y
> CONFIG_MTD_UBI_DEBUG_MSG=y
> CONFIG_MTD_UBI_DEBUG_MSG_EBA=y
>
> (initramfs) mount -t ubifs ubi0:ubifs /mnt0
> [ 1693.480000] UBI DBG (pid 2323): ubi_open_volume_path: open volume
> ubi0:ubifs, mode 1
> [ 1693.490000] UBI DBG (pid 2323): ubi_open_volume_nm: open device 0,
> volume ubifs, mode 1
> [ 1693.490000] UBI DBG (pid 2323): ubi_open_volume: open device 0,
> volume 2, mode 1
> [ 1693.500000] UBI DBG (pid 2323): ubi_open_volume: open device 0,
> volume 2, mode 2
> [ 1693.510000] UBI DBG (pid 2323): ubi_is_mapped: test LEB 2:0
> <snip...>
> [ 1694.130000] UBI DBG (pid 2323): ubi_is_mapped: test LEB 2:109
> [ 1694.140000] UBI DBG (pid 2323): ubi_leb_change: atomically write
> 560 bytes to LEB 2:6
> [ 1694.150000] UBI DBG (pid 2323): ubi_eba_atomic_leb_change: change
> LEB 2:6, PEB -1, write VID hdr to PEB 5
> 11 bytes starting at LEB 2:6:545 has the following data:
> 0xb7 0xe2 0x02 0xd5 0x9f 0x00 0x00 0xe0 0x7f 0x00 0x00
>
> <snip...>
> [ 1694.520000] UBI DBG (pid 2323): ubi_leb_read: read 11 bytes from LEB 2:6:545
> [ 1694.530000] UBI DBG (pid 2323): ubi_eba_read_leb: read 11 bytes
> from offset 545 of LEB 2:6, PEB 5
> [ 1694.540000] UBIFS error (pid 2323): check_lpt_crc: invalid crc in
> LPT node: crc e2e2 calc e2b7
> 11 bytes starting at LEB 2:6:545 has the following data:
> 0xe2 0xe2 0x02 0xd5 0x9f 0x00 0x00 0xe0 0x7f 0x00 0x00
>
> [ 1694.550000] [<c01ca2bc>] (unwind_backtrace+0x0/0x160) from
> [<bf096a34>] (check_lpt_crc+0x9c/0xb0 [ubifs])
> [ 1694.560000] [<bf096a34>] (check_lpt_crc+0x9c/0xb0 [ubifs]) from
> [<bf096f44>] (unpack_ltab+0x114/0x118 [ubifs])
> [ 1694.570000] [<bf096f44>] (unpack_ltab+0x114/0x118 [ubifs]) from
> [<bf097d28>] (lpt_init_rd+0x110/0x6f8 [ubifs])
> [ 1694.580000] [<bf097d28>] (lpt_init_rd+0x110/0x6f8 [ubifs]) from
> [<bf098e4c>] (ubifs_lpt_init+0x30/0x54 [ubifs])
> [ 1694.590000] [<bf098e4c>] (ubifs_lpt_init+0x30/0x54 [ubifs]) from
> [<bf076cb8>] (mount_ubifs+0x368/0x1620 [ubifs])
> [ 1694.600000] [<bf076cb8>] (mount_ubifs+0x368/0x1620 [ubifs]) from
> [<bf078d20>] (ubifs_fill_super+0x318/0x42c [ubifs])
> [ 1694.610000] [<bf078d20>] (ubifs_fill_super+0x318/0x42c [ubifs])
> from [<bf078f0c>] (ubifs_get_sb+0xd8/0x22c [ubifs])
> [ 1694.620000] [<bf078f0c>] (ubifs_get_sb+0xd8/0x22c [ubifs]) from
> [<c023d360>] (vfs_kern_mount+0x68/0x12c)
> [ 1694.630000] [<c023d360>] (vfs_kern_mount+0x68/0x12c) from
> [<c023d468>] (do_kern_mount+0x34/0xdc)
> [ 1694.640000] [<c023d468>] (do_kern_mount+0x34/0xdc) from
> [<c0255ad0>] (do_mount+0x210/0x244)
> [ 1694.650000] [<c0255ad0>] (do_mount+0x210/0x244) from [<c0255ba0>]
> (sys_mount+0x9c/0xd0)
> [ 1694.660000] [<c0255ba0>] (sys_mount+0x9c/0xd0) from [<c01c49e0>]
> (ret_fast_syscall+0x0/0x2c)
>
> Looking into drivers/mtd/maps/ixp4xx.c I see that the read function is
> ixp4xx_read16(). It seems to me that there is an alignment problem.
> The read starts at offset 545 which in unaligned with a 16-bit read
> that is done by ixp4xx_read16().
Yeah, most probably. Too bad we do not have a test for this. Care to
extend MTD tests?
--
Best Regards,
Artem Bityutskiy (Артём Битюцкий)
next prev parent reply other threads:[~2010-01-13 7:56 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-11 18:56 Fail to mount ubifs Jon Ringle
2010-01-12 0:20 ` Jon Ringle
2010-01-12 4:50 ` Artem Bityutskiy
2010-01-12 12:07 ` Jon Ringle
2010-01-12 21:37 ` Artem Bityutskiy
2010-01-13 0:40 ` Jon Ringle
2010-01-12 20:23 ` Jon Ringle
2010-01-12 20:49 ` Jon Ringle
2010-01-12 21:23 ` Jon Ringle
2010-01-12 21:38 ` Artem Bityutskiy
2010-01-12 21:30 ` Artem Bityutskiy
2010-01-13 0:15 ` Jon Ringle
2010-01-13 7:03 ` Jon Ringle
2010-01-13 7:55 ` Artem Bityutskiy [this message]
2010-01-13 8:06 ` Artem Bityutskiy
2010-01-13 14:20 ` Jon Ringle
2010-01-12 21:33 ` Artem Bityutskiy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1263369336.2917.6.camel@localhost \
--to=dedekind1@gmail.com \
--cc=dsaxena@mvista.com \
--cc=jon@ringle.org \
--cc=linux-mtd@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.