From: "Michael Chan" <mchan@broadcom.com>
To: "Stephen Hemminger" <shemminger@vyatta.com>
Cc: "Randy Dunlap" <randy.dunlap@oracle.com>,
netdev <netdev@vger.kernel.org>
Subject: Re: 2.6.27-rc1-git4 BUG: sched while atomic
Date: Mon, 04 Aug 2008 07:20:40 -0700 [thread overview]
Message-ID: <1217859640.6746.2.camel@HP1> (raw)
In-Reply-To: <20080804101712.659780ef@extreme>
On Mon, 2008-08-04 at 10:17 -0700, Stephen Hemminger wrote:
> > In 2.6.27-rc1-git4, I now see this (39 times):
> >
> > BUG: scheduling while atomic: ifconfig/16971/0x00000100
> > Modules linked in: parport_pc lp parport tg3 lpfc cciss ehci_hcd
> ohci_hcd uhci_hcd
> > Pid: 16971, comm: ifconfig Not tainted 2.6.27-rc1-git4 #1
> >
> > Call Trace:
> > [<ffffffff80283db9>] ? page_add_new_anon_rmap+0x20/0x22
> > [<ffffffff802310e9>] __schedule_bug+0x62/0x66
> > [<ffffffff80551146>] schedule+0x99/0x759
> > [<ffffffff8023dc9f>] ? __mod_timer+0xc1/0xd3
> > [<ffffffff8055584a>] ? do_page_fault+0x473/0x7dd
> > [<ffffffff80551ce4>] schedule_timeout+0x8d/0xb4
> > [<ffffffff8023d99e>] ? process_timeout+0x0/0xb
> > [<ffffffff80551cdf>] ? schedule_timeout+0x88/0xb4
> > [<ffffffff80551d24>] schedule_timeout_uninterruptible+0x19/0x1b
> > [<ffffffff8023dcc5>] msleep+0x14/0x1e
> > [<ffffffff80375f2f>] pci_set_power_state+0x1cd/0x292
> > [<ffffffff803739fc>] ? pci_bus_write_config_dword+0x64/0x73
> > [<ffffffffa00651b6>] tg3_set_power_state+0x58/0x884 [tg3]
> > [<ffffffff80552525>] ? __mutex_lock_slowpath+0x1d8/0x1e5
> > [<ffffffffa006b57a>] tg3_open+0x46/0x6cc [tg3]
> > [<ffffffff80552525>] ? __mutex_lock_slowpath+0x1d8/0x1e5
> > [<ffffffff804bdcfe>] dev_open+0x73/0xa8
> > [<ffffffff804bbf5e>] dev_change_flags+0xab/0x167
> > [<ffffffff804f7094>] devinet_ioctl+0x269/0x5da
> > [<ffffffff8026d9da>] ? unlock_page+0x2d/0x32
> > [<ffffffff804f7ca8>] inet_ioctl+0x92/0xaa
> > [<ffffffff804b2046>] sock_ioctl+0x1d1/0x1fb
> > [<ffffffff802a50aa>] vfs_ioctl+0x2a/0x77
> > [<ffffffff802a534c>] do_vfs_ioctl+0x255/0x272
> > [<ffffffff8055584a>] ? do_page_fault+0x473/0x7dd
> > [<ffffffff802a53ab>] sys_ioctl+0x42/0x67
> > [<ffffffff8020beeb>] system_call_fastpath+0x16/0x1b
>
> This is a bug.
>
This was introduced by:
tg3: adapt tg3 to use reworked PCI PM code
Adapt the tg3 driver to use the reworked PCI PM and make it use the
exported PCI PM core functions instead of accessing the PCI PM registers
directly by itself.
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In the original tg3 code, we used udelay() when switching to D0 state
since we were inside tg3_full_lock().
next prev parent reply other threads:[~2008-08-04 18:21 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-04 16:48 2.6.27-rc1-git4 BUG: sched while atomic Randy Dunlap
2008-08-04 17:17 ` Stephen Hemminger
2008-08-04 14:20 ` Michael Chan [this message]
2008-08-04 19:13 ` Breno Leitao
2008-08-04 21:40 ` David Miller
2008-08-05 0:46 ` Matt Carlson
2008-08-04 18:00 ` Breno Leitao
2008-08-05 12:29 ` Rafael J. Wysocki
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