On Thu, 05 Dec 2013 15:12:04 +0800 Axel Lin wrote:
> >
> > blam. spin_unlock_irq(>tree_lock) failed to decrement
> > preempt_count(). What the heck.
> >
> > What architecture is this? Please send the full .config.
> >
> > And exactly which kernel version is in use?
>
> It's a arm7tdmi SoC
於 三，2013-12-04 於 13:32 -0800，Andrew Morton 提到：
> On Wed, 04 Dec 2013 16:59:38 +0800 Axel Lin wrote:
>
> > >
> > > Please add a lot more printk's so we can narrow it down further? I'd
> > > use something like
> > >
> > > printk(%d: %d\n", __LINE__, preempt_count());
> > >
> > > (note:
kernel memory: 92K (003a8000 - 003bf000)
> 467: 0
> 470: 0
> 475: 1
> 485: 1
> 487: 2
> 489: 2
> 491: 1
> 494: 1
> 496: 1
> 498: 1
> 500: 0
> 502: 0
> 467: 0
> 470: 0
> 475: 1
> 485: 1
> 487: 2
> 489: 2
> 491: 1
> 494: 1
> 496: 1
&g
On Wed, 04 Dec 2013 16:13:31 +0800 Axel Lin wrote:
> I can constantly hit this issue:
>
> I trace it to mm/filemap.c: add_to_page_cache_locked
> I print the in_atomic status at BEGIN and END of add_to_page_cache_locked
> call.
> Then I got in_atomic is true at the end of
d_to_page_cache_locked END in_atomic=1
BUG: sleeping function called from invalid context at kernel/locking/mutex.c:616
in_atomic(): 1, irqs_disabled(): 128, pid: 1, name: swapper
1 lock held by swapper/1:
#0: (>cred_guard_mutex){..}, at: [<00073fac>]
prepare_bprm_creds+0x30/0x6c
.
Testing on a nommu platform with 3.13.0-rc2 + patches for this SoC.
VFS: Mounted root (jffs2 filesystem) on device 31:1.
devtmpfs: mounted
Freeing unused kernel memory: 92K (003a4000 - 003bb000)
BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:616
in_atomic(): 1
On Wed, 04 Dec 2013 16:13:31 +0800 Axel Lin axel@ingics.com wrote:
I can constantly hit this issue:
I trace it to mm/filemap.c: add_to_page_cache_locked
I print the in_atomic status at BEGIN and END of add_to_page_cache_locked
call.
Then I got in_atomic is true at the end of
is in use?
Thanks.
502: 1
BUG: sleeping function called from invalid context at
kernel/locking/mutex.c:616
in_atomic(): 1, irqs_disabled(): 128, pid: 1, name: swapper
1 lock held by swapper/1:
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於 三，2013-12-04 於 13:32 -0800，Andrew Morton 提到：
On Wed, 04 Dec 2013 16:59:38 +0800 Axel Lin axel@ingics.com wrote:
Please add a lot more printk's so we can narrow it down further? I'd
use something like
printk(%d: %d\n, __LINE__, preempt_count());
(note:
On Thu, 05 Dec 2013 15:12:04 +0800 Axel Lin axel@ingics.com wrote:
blam. spin_unlock_irq(mapping-tree_lock) failed to decrement
preempt_count(). What the heck.
What architecture is this? Please send the full .config.
And exactly which kernel version is in use?
It's a
Hi,
I got below messages while booting.
Testing on a nommu platform with 3.13.0-rc2 + patches for this SoC.
VFS: Mounted root (jffs2 filesystem) on device 31:1.
devtmpfs: mounted
Freeing unused kernel memory: 92K (003a4000 - 003bb000)
BUG: sleeping function called from invalid context at kernel
Hi,
I got below messages while booting.
Testing on a nommu platform with 3.13.0-rc2 + patches for this SoC.
VFS: Mounted root (jffs2 filesystem) on device 31:1.
devtmpfs: mounted
Freeing unused kernel memory: 92K (003a4000 - 003bb000)
BUG: sleeping function called from invalid context at kernel
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