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Date:	Thu, 15 Dec 2011 15:21:24 +0300
From:	Alexander Smirnov <alex.bluesman.smirnov@...il.com>
To:	Sasha Levin <levinsasha928@...il.com>
Cc:	dbaryshkov@...il.com, slapin@...fans.org,
	davem <davem@...emloft.net>, netdev <netdev@...r.kernel.org>,
	linux-zigbee-devel@...ts.sourceforge.net
Subject: Re: [Linux-zigbee-devel] ieee802154: WARNING: at mm/page_alloc.c:2095

Hi Sasha,

first of all could you please specify:
1. What's the kernel do you use?
2. What's the config options are enabled in your kernel?
3. What the HW do you use and what is the use case?
4. What you do to represent this error?

BTW: I cut linux-kernel list, not sure that it's suitable for such questions.

With best regards,
Alexander

2011/11/22 Sasha Levin <levinsasha928@...il.com>:
> Hi all,
>
> I got the following warning when trying out ieee802154:
>
> [  157.736372] WARNING: at mm/page_alloc.c:2095 __alloc_pages_nodemask+0x177/0x722()
> [  157.737707] Pid: 9100, comm: trinity Not tainted 3.2.0-rc2-sasha-00280-g45a222d #22
> [  157.739114] Call Trace:
> [  157.739559]  [<ffffffff810fcd7f>] ? __alloc_pages_nodemask+0x177/0x722
> [  157.740746]  [<ffffffff81086984>] warn_slowpath_common+0x7b/0x93
> [  157.741824]  [<ffffffff81086a47>] warn_slowpath_null+0x15/0x17
> [  157.743283]  [<ffffffff810fcd7f>] __alloc_pages_nodemask+0x177/0x722
> [  157.744434]  [<ffffffff8112f8a3>] ? __slab_alloc.clone.46+0x42d/0x456
> [  157.745598]  [<ffffffff810b1d97>] ? trace_hardirqs_on_caller+0x151/0x197
> [  157.747204]  [<ffffffff8112f8ab>] ? __slab_alloc.clone.46+0x435/0x456
> [  157.748375]  [<ffffffff810a4875>] ? sched_clock_local+0x12/0x75
> [  157.749475]  [<ffffffff81b96dd6>] ? __alloc_skb+0x42/0x14a
> [  157.750682]  [<ffffffff810b2c3a>] ? lock_is_held+0x92/0x9d
> [  157.751693]  [<ffffffff8112d399>] kmalloc_large_node+0x51/0x83
> [  157.752757]  [<ffffffff81131ada>] __kmalloc_node_track_caller+0x29/0x127
> [  157.753955]  [<ffffffff81b9449e>] ? sock_alloc_send_pskb+0xbd/0x2d7
> [  157.755084]  [<ffffffff81b96e0a>] __alloc_skb+0x76/0x14a
> [  157.756055]  [<ffffffff81b9449e>] sock_alloc_send_pskb+0xbd/0x2d7
> [  157.757155]  [<ffffffff81b9e6ed>] ? rcu_read_unlock+0x21/0x23
> [  157.758206]  [<ffffffff81b946c8>] sock_alloc_send_skb+0x10/0x12
> [  157.759292]  [<ffffffff81e18f4c>] dgram_sendmsg+0xa8/0x22c
> [  157.760292]  [<ffffffff81e182af>] ieee802154_sock_sendmsg+0xf/0x11
> [  157.761376]  [<ffffffff81b8fc6f>] __sock_sendmsg+0x65/0x72
> [  157.762388]  [<ffffffff81b908bb>] sock_sendmsg+0xa3/0xbc
> [  157.763351]  [<ffffffff810a4875>] ? sched_clock_local+0x12/0x75
> [  157.764420]  [<ffffffff8107ecfc>] ? get_parent_ip+0x11/0x41
> [  157.765428]  [<ffffffff8107ecfc>] ? get_parent_ip+0x11/0x41
> [  157.766439]  [<ffffffff810b2c3a>] ? lock_is_held+0x92/0x9d
> [  157.767440]  [<ffffffff81141631>] ? fget_light+0x35/0x9e
> [  157.768409]  [<ffffffff810a355f>] ? up_read+0x1e/0x35
> [  157.769336]  [<ffffffff81b90479>] ? sockfd_lookup_light+0x1b/0x53
> [  157.770434]  [<ffffffff81b91b1d>] sys_sendto+0x12d/0x16f
> [  157.771396]  [<ffffffff810b1e8f>] ? trace_hardirqs_off_caller+0xa3/0x10b
> [  157.772594]  [<ffffffff81e6fd1d>] ? retint_swapgs+0x13/0x1b
> [  157.773599]  [<ffffffff810b1d97>] ? trace_hardirqs_on_caller+0x151/0x197
> [  157.774826]  [<ffffffff8161620e>] ? trace_hardirqs_on_thunk+0x3a/0x3f
> [  157.775989]  [<ffffffff81e705d2>] system_call_fastpath+0x16/0x1b
>
> Please let me know if theres anything I can help with debugging it.
>
> --
>
> Sasha.
>
>
>
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