From: Andrew Morton <akpm@linux-foundation.org>
To: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: bugzilla-daemon@bugzilla.kernel.org,
bugme-daemon@bugzilla.kernel.org,
"John W. Linville" <linville@tuxdriver.com>,
linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org,
alex.vizor@gmail.com
Subject: Re: [Bugme-new] [Bug 15551] New: wifi doesn't work after resume from s2ram on ThinkPad T61
Date: Mon, 22 Mar 2010 12:56:56 -0700 [thread overview]
Message-ID: <20100322125656.24ce2c11.akpm@linux-foundation.org> (raw)
In-Reply-To: <bug-15551-10286@http.bugzilla.kernel.org/>
On Tue, 16 Mar 2010 22:03:53 GMT
bugzilla-daemon@bugzilla.kernel.org wrote:
> http://bugzilla.kernel.org/show_bug.cgi?id=15551
This'll be a post-2.6.33 regression.
> Summary: wifi doesn't work after resume from s2ram on ThinkPad
> T61
> Product: Networking
> Version: 2.5
> Kernel Version: 2.6.34-rc1
> Platform: All
> OS/Version: Linux
> Tree: Mainline
> Status: NEW
> Severity: normal
> Priority: P1
> Component: Wireless
> AssignedTo: networking_wireless@kernel-bugs.osdl.org
> ReportedBy: alex.vizor@gmail.com
> Regression: Yes
>
>
> Created an attachment (id=25561)
> --> (http://bugzilla.kernel.org/attachment.cgi?id=25561)
> dmesg
>
> Hi. I caught this after several resumes from s2ram, from s2disk it works ok.
>
> I attached my dmesg. Please inform me if I can do the report more useful.
>
This:
: [22456.252166] s2ram: page allocation failure. order:4, mode:0x4010
: [22456.252172] Pid: 23558, comm: s2ram Not tainted 2.6.34-rc1 #1
: [22456.252175] Call Trace:
: [22456.252187] [<ffffffff810b8dc9>] __alloc_pages_nodemask+0x565/0x60c
: [22456.252195] [<ffffffff810de879>] alloc_pages_current+0x90/0x99
: [22456.252201] [<ffffffff810b7a9e>] __get_free_pages+0x9/0x46
: [22456.252221] [<ffffffffa03b4bdd>] iwl_tx_queue_init+0xf2/0x2a1 [iwlcore]
: [22456.252227] [<ffffffffa03b4f12>] iwl_txq_ctx_reset+0x186/0x20c [iwlcore]
: [22456.252233] [<ffffffffa03ae41c>] iwl_hw_nic_init+0x124/0x139 [iwlcore]
Rafael, this is fallout from 452aa6999e6703ffbddd7f6ea124d3968915f3e3
("mm/pm: force GFP_NOIO during suspend/hibernation and resume").
Wireless was previously doing this stupidly-large allocation with
GFP_KERNEL. But I think the above change is what flipped it to
__GFP_WAIT, which caused the page allocator to go into lame-and-sucky
mode, so the allocation failed.
(btw, that was a bug - 452aa6999e6703ffbddd7f6ea124d3968915f3e3 should
have cleared the __GFP_WAIT bit too).
next parent reply other threads:[~2010-03-22 19:58 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <bug-15551-10286@http.bugzilla.kernel.org/>
2010-03-22 19:56 ` Andrew Morton [this message]
2010-03-22 21:04 ` [Bugme-new] [Bug 15551] New: wifi doesn't work after resume from s2ram on ThinkPad T61 Rafael J. Wysocki
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