From: Karsten Keil <kkeil@linux-pingi.de>
To: netdev@vger.kernel.org
Subject: Re: 3.3-rc6 netjet.ko sleeping while in atomic.
Date: Thu, 15 Mar 2012 09:48:40 +0100 [thread overview]
Message-ID: <20120315084840.GA20202@gw.linux-pingi.de> (raw)
In-Reply-To: <20120314191650.GB18135@digium.com>
Thanks for the report.
I will have a look on this.
On Wed, Mar 14, 2012 at 02:16:50PM -0500, Shaun Ruffell wrote:
> Karsten,
>
> I hit this today when unloading netjet.ko which was attached to a
> Digium TDM400 card. Looks like flush_work_sync() is called while in
> a spin_lock_irqsave() block. Not sure if it matters to you but I
> thought I would send it along:
>
> BUG: sleeping function called from invalid context at kernel/workqueue.c:2445
> in_atomic(): 1, irqs_disabled(): 1, pid: 30652, name: modprobe
> 3 locks held by modprobe/30652:
> #0: (&__lockdep_no_validate__){......}, at: [<c0669fd2>] driver_detach+0x37/0x95
> #1: (&__lockdep_no_validate__){......}, at: [<c0669fde>] driver_detach+0x43/0x95
> #2: (&(&card->lock)->rlock){-.-...}, at: [<fa6f4657>] nj_release+0x14b/0x1b0 [netjet]
> irq event stamp: 4262
> hardirqs last enabled at (4261): [<c0476648>] debug_check_no_locks_freed+0x7a/0x138
> hardirqs last disabled at (4262): [<c07be2ea>] _raw_spin_lock_irqsave+0x18/0x7f
> softirqs last enabled at (1564): [<c0430cc1>] __do_softirq+0x10c/0x2fe
> softirqs last disabled at (1517): [<c04040b2>] call_on_stack+0x12/0x18
> Pid: 30652, comm: modprobe Tainted: G O 3.3.0-rc6.sruffelldbg+ #35
> Call Trace:
> [<c04542ce>] __might_sleep+0x10b/0x197
> [<c0444df1>] start_flush_work+0x26/0x132
> [<c0474b1c>] ? trace_hardirqs_off_caller+0x18/0x92
> [<c0444f19>] flush_work_sync+0x1c/0x50
> [<c0474442>] ? lock_release_holdtime+0x68/0xca
> [<c07beb5f>] ? _raw_spin_unlock_irqrestore+0x34/0x4c
> [<c0474ba1>] ? trace_hardirqs_off+0xb/0xd
> [<c07beb5f>] ? _raw_spin_unlock_irqrestore+0x34/0x4c
> [<c06fe174>] ? skb_dequeue+0x47/0x52
> [<fa63824c>] mISDN_freedchannel+0x5e/0x63 [mISDN_core]
> [<fa69509a>] isac_release+0x9a/0xc0 [mISDNipac]
> [<fa6f4683>] nj_release+0x177/0x1b0 [netjet]
> [<c044fea8>] ? __blocking_notifier_call_chain+0x5c/0x89
> [<fa6f5ad7>] nj_remove+0x17/0x2f [netjet]
> [<c05e4bd4>] pci_device_remove+0x1e/0x3f
> [<c06698fa>] __device_release_driver+0x4e/0x96
> [<c066a02c>] driver_detach+0x91/0x95
> [<c0668bce>] bus_remove_driver+0x6e/0xcf
> [<c066a399>] driver_unregister+0x42/0x6c
> [<c066a593>] ? driver_remove_file+0x14/0x16
> [<c05e4924>] pci_unregister_driver+0x2d/0x78
> [<fa6f5ab5>] nj_cleanup+0xd/0x18 [netjet]
> [<c04833c8>] sys_delete_module+0x123/0x219
> [<c045be28>] ? local_clock+0x29/0x42
> [<c049586d>] ? __audit_syscall_exit+0x2a4/0x440
> [<c07c468c>] sysenter_do_call+0x12/0x32
>
> Cheers,
> Shaun
next prev parent reply other threads:[~2012-03-15 8:48 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-14 19:16 3.3-rc6 netjet.ko sleeping while in atomic Shaun Ruffell
2012-03-15 8:48 ` Karsten Keil [this message]
2012-03-15 10:07 ` Francois Romieu
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