linux-kernel - Re: WARNING: at drivers/ata/libata-core.c:5027 ata_qc

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Date:	Wed, 30 Sep 2009 11:33:13 +0200
From:	Zdenek Kabelac <zdenek.kabelac@...il.com>
To:	jgarzik@...ox.com
Cc:	linux-ide@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: WARNING: at drivers/ata/libata-core.c:5027 ata_qc_complete+0x200/0x210()

2009/9/17 Zdenek Kabelac <zdenek.kabelac@...il.com>:
> Hi
>
> Somewhere during recent merge commits this message started to appear
> in my qemu kvm guest
> (already present with some 2.6.31-040xxx commit)
>
> Is this fault of kvm emulation ?
>
>
> WARNING: at drivers/ata/libata-core.c:5027 ata_qc_complete+0x200/0x210()
> Hardware name:
> Modules linked in:
> Pid: 167, comm: ata/0 Not tainted 2.6.31-05317-ged0ecd1 #42
> Call Trace:
>  [<ffffffff81051ddb>] warn_slowpath_common+0x7b/0xc0
>  [<ffffffff81051e34>] warn_slowpath_null+0x14/0x20
>  [<ffffffff81323690>] ata_qc_complete+0x200/0x210
>  [<ffffffff81330243>] ata_do_link_abort+0xf3/0x110
>  [<ffffffff81330270>] ata_port_abort+0x10/0x20
>  [<ffffffff813302af>] ata_port_freeze+0x2f/0x50
>  [<ffffffff81334101>] ata_hsm_qc_complete+0x131/0x140
>  [<ffffffff81335347>] ata_sff_hsm_move+0x197/0x760
>  [<ffffffff8125891a>] ? delay_tsc+0x8a/0xe0
>  [<ffffffff81335ca0>] ? ata_pio_task+0x0/0x120
>  [<ffffffff81335ca0>] ? ata_pio_task+0x0/0x120
>  [<ffffffff81335cd7>] ata_pio_task+0x37/0x120
>  [<ffffffff8106f88a>] worker_thread+0x21a/0x400
>  [<ffffffff8106f839>] ? worker_thread+0x1c9/0x400
>  [<ffffffff81075a20>] ? autoremove_wake_function+0x0/0x40
>  [<ffffffff8106f670>] ? worker_thread+0x0/0x400
>  [<ffffffff810755f6>] kthread+0x96/0xa0
>  [<ffffffff8100d29a>] child_rip+0xa/0x20
>  [<ffffffff81041574>] ? finish_task_switch+0x74/0xf0
>  [<ffffffff8140d14b>] ? _spin_unlock_irq+0x3b/0x60
>  [<ffffffff8100cc00>] ? restore_args+0x0/0x30
>  [<ffffffff81075560>] ? kthread+0x0/0xa0
>  [<ffffffff8100d290>] ? child_rip+0x0/0x20
>
>

Just confirmation that WARNING trace is still present with 2.6.32-rc1.

Zdenek
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