From: alex.shi@linaro.org (Alex Shi)
To: linux-arm-kernel@lists.infradead.org
Subject: do_undefinstr call sem down_read?
Date: Fri, 25 Apr 2014 15:07:09 +0800 [thread overview]
Message-ID: <535A099D.50001@linaro.org> (raw)
In-Reply-To: <5358D051.5050306@linaro.org>
On 04/24/2014 04:50 PM, Alex Shi wrote:
> Hi, Russell,
>
> I caught the following issue few times on my panda board on lsk. but I track the code
> path, looks like the upstream kernel has the same problem too.
>
> the interrupt handler do_undefinstr --> arm_notify_die --> die --> ...
> exit_signals --> threadgroup_change_begin --> down_read
> and then down_read maybe get into sleep.
> Is it a issue which needs to be fixed? or I over concern on this?
Any comments for this Oops?
>
> [ 30.618469] BUG: sleeping function called from invalid context at kernel/rwsem.c:20
> [ 30.618469] in_atomic(): 0, irqs_disabled(): 128, pid: 809, name: jbd2/mmcblk0p2-
> [ 30.628540] INFO: lockdep is turned off.
> [ 30.638671] irq event stamp: 1372
> [ 30.638671] hardirqs last enabled at (1371): [<c00c1fa1>] get_page_from_freelist+0x279/0x434
> [ 30.648529] hardirqs last disabled at (1372): [<c050cbb3>] __und_svc+0x33/0x5c
> [ 30.658905] softirqs last enabled at (0): [<c002f22a>] copy_process.part.52+0x31a/0xdf4
> [ 30.658905] softirqs last disabled at (0): [< (null)>] (null)
> [ 30.669433] CPU: 0 PID: 809 Comm: jbd2/mmcblk0p2- Tainted: G D W 3.10.37+ #109
> [ 30.682281] [<c001292d>] (unwind_backtrace+0x1/0xcc) from [<c0010279>] (show_stack+0x11/0x14)
> [ 30.691314] [<c0010279>] (show_stack+0x11/0x14) from [<c050aae7>] (down_read+0x1f/0x44)
> [ 30.699829] [<c050aae7>] (down_read+0x1f/0x44) from [<c00415c5>] (exit_signals+0x19/0xe4)
> [ 30.708496] [<c00415c5>] (exit_signals+0x19/0xe4) from [<c0034459>] (do_exit+0x81/0x870)
> [ 30.717071] [<c0034459>] (do_exit+0x81/0x870) from [<c00105af>] (die+0x333/0x350)
> [ 30.725036] [<c00105af>] (die+0x333/0x350) from [<c0008417>] (do_undefinstr+0x10b/0x13c)
> [ 30.733612] [<c0008417>] (do_undefinstr+0x10b/0x13c) from [<c050cbe3>] (__und_svc_finish+0x1/0x3e)
> [ 30.743103] Exception stack(0xedd5fc50 to 0xedd5fc98)
> [ 30.748443] fc40: c13c14e0 80000000 00000080 00000000
> [ 30.757141] fc60: c13c14e0 0000000c eac67284 c13c14e0 edc11518 c0df95c0 c0824410 eac67240
> [ 30.765808] fc80: 00000000 edd5fcd8 c00171f9 c00cf998 80000133 ffffffff
> [ 30.772827] [<c050cbe3>] (__und_svc_finish+0x1/0x3e) from [<c00cf998>] (page_mapping+0x20/0x38)
> [ 30.782073] [<c00cf998>] (page_mapping+0x20/0x38) from [<c00171f9>] (flush_dcache_page+0x1d/0x60)
> [ 30.791473] [<c00171f9>] (flush_dcache_page+0x1d/0x60) from [<c00e26c3>] (blk_queue_bounce+0x1a3/0x2a0)
> [ 30.801452] [<c00e26c3>] (blk_queue_bounce+0x1a3/0x2a0) from [<c02ca5bb>] (blk_queue_bio+0x1f/0x364)
> [ 30.811157] [<c02ca5bb>] (blk_queue_bio+0x1f/0x364) from [<c02c9661>] (generic_make_request+0x65/0x88)
> [ 30.821014] [<c02c9661>] (generic_make_request+0x65/0x88) from [<c02c96e5>] (submit_bio+0x61/0x104)
> [ 30.830627] [<c02c96e5>] (submit_bio+0x61/0x104) from [<c010f017>] (_submit_bh+0x127/0x19c)
> [ 30.839477] [<c010f017>] (_submit_bh+0x127/0x19c) from [<c0194def>] (jbd2_journal_commit_transaction+0x70b/0x161c)
> [ 30.850463] [<c0194def>] (jbd2_journal_commit_transaction+0--
>
>
> Thanks
> Alex
>
--
Thanks
Alex
next prev parent reply other threads:[~2014-04-25 7:07 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-24 8:50 do_undefinstr call sem down_read? Alex Shi
2014-04-25 7:07 ` Alex Shi [this message]
2014-04-25 8:57 ` Russell King - ARM Linux
2014-04-28 5:01 ` Alex Shi
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=535A099D.50001@linaro.org \
--to=alex.shi@linaro.org \
--cc=linux-arm-kernel@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.