Linux v3.8-rc7
- Add patch to fix atomic sleep issue on alloc_pid failure (rhbz 894623) - Disable debugging options.
This commit is contained in:
Josh Boyer
parent
676a807e3b
commit
a6e396049b
|
|
@ -1,68 +0,0 @@
|
|||
From ae023b2795d36f0f077e157428eb7eafa29ee412 Mon Sep 17 00:00:00 2001
|
||||
From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
|
||||
Date: Mon, 21 Jan 2013 13:12:57 +0200
|
||||
Subject: [PATCH] Revert "iwlwifi: fix the reclaimed packet tracking upon
|
||||
flush queue"
|
||||
|
||||
This reverts commit f590dcec944552f9a4a61155810f3abd17d6465d
|
||||
which has been reported to cause issues.
|
||||
|
||||
See https://lkml.org/lkml/2013/1/20/4 for further details.
|
||||
|
||||
Cc: stable@vger.kernel.org [3.7]
|
||||
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
|
||||
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
|
||||
---
|
||||
drivers/net/wireless/iwlwifi/dvm/tx.c | 24 +++++++-----------------
|
||||
1 files changed, 7 insertions(+), 17 deletions(-)
|
||||
|
||||
diff --git a/drivers/net/wireless/iwlwifi/dvm/tx.c b/drivers/net/wireless/iwlwifi/dvm/tx.c
|
||||
index 31534f7..2797964 100644
|
||||
--- a/drivers/net/wireless/iwlwifi/dvm/tx.c
|
||||
+++ b/drivers/net/wireless/iwlwifi/dvm/tx.c
|
||||
@@ -1153,6 +1153,13 @@ int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
|
||||
next_reclaimed = ssn;
|
||||
}
|
||||
|
||||
+ if (tid != IWL_TID_NON_QOS) {
|
||||
+ priv->tid_data[sta_id][tid].next_reclaimed =
|
||||
+ next_reclaimed;
|
||||
+ IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n",
|
||||
+ next_reclaimed);
|
||||
+ }
|
||||
+
|
||||
iwl_trans_reclaim(priv->trans, txq_id, ssn, &skbs);
|
||||
|
||||
iwlagn_check_ratid_empty(priv, sta_id, tid);
|
||||
@@ -1203,28 +1210,11 @@ int iwlagn_rx_reply_tx(struct iwl_priv *priv, struct iwl_rx_cmd_buffer *rxb,
|
||||
if (!is_agg)
|
||||
iwlagn_non_agg_tx_status(priv, ctx, hdr->addr1);
|
||||
|
||||
- /*
|
||||
- * W/A for FW bug - the seq_ctl isn't updated when the
|
||||
- * queues are flushed. Fetch it from the packet itself
|
||||
- */
|
||||
- if (!is_agg && status == TX_STATUS_FAIL_FIFO_FLUSHED) {
|
||||
- next_reclaimed = le16_to_cpu(hdr->seq_ctrl);
|
||||
- next_reclaimed =
|
||||
- SEQ_TO_SN(next_reclaimed + 0x10);
|
||||
- }
|
||||
-
|
||||
is_offchannel_skb =
|
||||
(info->flags & IEEE80211_TX_CTL_TX_OFFCHAN);
|
||||
freed++;
|
||||
}
|
||||
|
||||
- if (tid != IWL_TID_NON_QOS) {
|
||||
- priv->tid_data[sta_id][tid].next_reclaimed =
|
||||
- next_reclaimed;
|
||||
- IWL_DEBUG_TX_REPLY(priv, "Next reclaimed packet:%d\n",
|
||||
- next_reclaimed);
|
||||
- }
|
||||
-
|
||||
WARN_ON(!is_agg && freed != 1);
|
||||
|
||||
/*
|
||||
--
|
||||
1.7.6.5
|
||||
|
||||
|
|
@ -2,14 +2,14 @@ CONFIG_SND_VERBOSE_PRINTK=y
|
|||
CONFIG_SND_DEBUG=y
|
||||
CONFIG_SND_PCM_XRUN_DEBUG=y
|
||||
|
||||
CONFIG_DEBUG_ATOMIC_SLEEP=y
|
||||
# CONFIG_DEBUG_ATOMIC_SLEEP is not set
|
||||
|
||||
# CONFIG_DEBUG_MUTEXES is not set
|
||||
# CONFIG_DEBUG_RT_MUTEXES is not set
|
||||
# CONFIG_DEBUG_LOCK_ALLOC is not set
|
||||
CONFIG_PROVE_LOCKING=y
|
||||
CONFIG_DEBUG_SPINLOCK=y
|
||||
CONFIG_PROVE_RCU=y
|
||||
# CONFIG_PROVE_LOCKING is not set
|
||||
# CONFIG_DEBUG_SPINLOCK is not set
|
||||
# CONFIG_PROVE_RCU is not set
|
||||
# CONFIG_PROVE_RCU_REPEATEDLY is not set
|
||||
# CONFIG_DEBUG_PER_CPU_MAPS is not set
|
||||
CONFIG_CPUMASK_OFFSTACK=y
|
||||
|
|
@ -25,11 +25,11 @@ CONFIG_CPUMASK_OFFSTACK=y
|
|||
# CONFIG_FAIL_IO_TIMEOUT is not set
|
||||
# CONFIG_FAIL_MMC_REQUEST is not set
|
||||
|
||||
CONFIG_SLUB_DEBUG_ON=y
|
||||
# CONFIG_SLUB_DEBUG_ON is not set
|
||||
|
||||
# CONFIG_LOCK_STAT is not set
|
||||
|
||||
CONFIG_DEBUG_STACK_USAGE=y
|
||||
# CONFIG_DEBUG_STACK_USAGE is not set
|
||||
|
||||
# CONFIG_ACPI_DEBUG is not set
|
||||
# CONFIG_ACPI_DEBUG_FUNC_TRACE is not set
|
||||
|
|
@ -56,7 +56,7 @@ CONFIG_DEBUG_OBJECTS_ENABLE_DEFAULT=1
|
|||
|
||||
# CONFIG_DEBUG_NOTIFIERS is not set
|
||||
|
||||
CONFIG_DMA_API_DEBUG=y
|
||||
# CONFIG_DMA_API_DEBUG is not set
|
||||
|
||||
# CONFIG_MMIOTRACE is not set
|
||||
|
||||
|
|
@ -66,7 +66,7 @@ CONFIG_DMA_API_DEBUG=y
|
|||
# on in rawhide nodebug builds
|
||||
# CONFIG_DEBUG_FORCE_WEAK_PER_CPU is not set
|
||||
|
||||
CONFIG_EXT4_DEBUG=y
|
||||
# CONFIG_EXT4_DEBUG is not set
|
||||
|
||||
# CONFIG_DEBUG_PERF_USE_VMALLOC is not set
|
||||
|
||||
|
|
@ -100,7 +100,7 @@ CONFIG_KDB_KEYBOARD=y
|
|||
# CONFIG_DEBUG_OBJECTS_PERCPU_COUNTER is not set
|
||||
# CONFIG_TEST_LIST_SORT is not set
|
||||
|
||||
CONFIG_DETECT_HUNG_TASK=y
|
||||
# CONFIG_DETECT_HUNG_TASK is not set
|
||||
CONFIG_DEFAULT_HUNG_TASK_TIMEOUT=120
|
||||
# CONFIG_BOOTPARAM_HUNG_TASK_PANIC is not set
|
||||
|
||||
|
|
|
|||
33
kernel.spec
33
kernel.spec
|
|
@ -62,7 +62,7 @@ Summary: The Linux kernel
|
|||
# For non-released -rc kernels, this will be appended after the rcX and
|
||||
# gitX tags, so a 3 here would become part of release "0.rcX.gitX.3"
|
||||
#
|
||||
%global baserelease 3
|
||||
%global baserelease 1
|
||||
%global fedora_build %{baserelease}
|
||||
|
||||
# base_sublevel is the kernel version we're starting with and patching
|
||||
|
|
@ -93,9 +93,9 @@ Summary: The Linux kernel
|
|||
# The next upstream release sublevel (base_sublevel+1)
|
||||
%define upstream_sublevel %(echo $((%{base_sublevel} + 1)))
|
||||
# The rc snapshot level
|
||||
%define rcrev 6
|
||||
%define rcrev 7
|
||||
# The git snapshot level
|
||||
%define gitrev 3
|
||||
%define gitrev 0
|
||||
# Set rpm version accordingly
|
||||
%define rpmversion 3.%{upstream_sublevel}.0
|
||||
%endif
|
||||
|
|
@ -159,7 +159,7 @@ Summary: The Linux kernel
|
|||
# Set debugbuildsenabled to 1 for production (build separate debug kernels)
|
||||
# and 0 for rawhide (all kernels are debug kernels).
|
||||
# See also 'make debug' and 'make release'.
|
||||
%define debugbuildsenabled 0
|
||||
%define debugbuildsenabled 1
|
||||
|
||||
# Want to build a vanilla kernel build without any non-upstream patches?
|
||||
%define with_vanilla %{?_with_vanilla: 1} %{?!_with_vanilla: 0}
|
||||
|
|
@ -172,7 +172,7 @@ Summary: The Linux kernel
|
|||
%define doc_build_fail true
|
||||
%endif
|
||||
|
||||
%define rawhide_skip_docs 1
|
||||
%define rawhide_skip_docs 0
|
||||
%if 0%{?rawhide_skip_docs}
|
||||
%define with_doc 0
|
||||
%define doc_build_fail true
|
||||
|
|
@ -738,9 +738,6 @@ Patch22070: irqnr-build.patch
|
|||
#rhbz 859485
|
||||
Patch21226: vt-Drop-K_OFF-for-VC_MUTE.patch
|
||||
|
||||
#rhbz 863424
|
||||
Patch21229: Revert-iwlwifi-fix-the-reclaimed-packet-tracking-upon.patch
|
||||
|
||||
#rhbz 799564
|
||||
Patch21240: Input-increase-struct-ps2dev-cmdbuf-to-8-bytes.patch
|
||||
Patch21241: Input-add-support-for-Cypress-PS2-Trackpads.patch
|
||||
|
|
@ -752,12 +749,11 @@ Patch21242: criu-no-expert.patch
|
|||
Patch21243: mac80211-improve-latency-and-throughput-while-software.patch
|
||||
Patch21244: iwlegacy-add-flush-callback.patch
|
||||
|
||||
#rhbz 903881
|
||||
Patch21246: rtlwifi-Fix-scheduling-while-atomic-bug.patch
|
||||
|
||||
#rhbz 892811
|
||||
Patch21247: ath9k_rx_dma_stop_check.patch
|
||||
|
||||
Patch21248: pid-unlock_irq-when-alloc_pid-fails-because-init.patch
|
||||
|
||||
# END OF PATCH DEFINITIONS
|
||||
|
||||
%endif
|
||||
|
|
@ -1415,7 +1411,7 @@ ApplyOptionalPatch v4l-dvb-update.patch
|
|||
ApplyOptionalPatch v4l-dvb-experimental.patch
|
||||
|
||||
# Experiment: Double the length of the brcmsmac transmit timeout.
|
||||
ApplyPatch brcmsmac-double-timeout.patch
|
||||
#pplyPatch brcmsmac-double-timeout.patch
|
||||
|
||||
# Patches headed upstream
|
||||
ApplyPatch fs-proc-devtree-remove_proc_entry.patch
|
||||
|
|
@ -1446,9 +1442,6 @@ ApplyPatch irqnr-build.patch
|
|||
#rhbz 859485
|
||||
ApplyPatch vt-Drop-K_OFF-for-VC_MUTE.patch
|
||||
|
||||
#rhbz 863424
|
||||
ApplyPatch Revert-iwlwifi-fix-the-reclaimed-packet-tracking-upon.patch
|
||||
|
||||
#rhbz 799564
|
||||
ApplyPatch Input-increase-struct-ps2dev-cmdbuf-to-8-bytes.patch
|
||||
ApplyPatch Input-add-support-for-Cypress-PS2-Trackpads.patch
|
||||
|
|
@ -1460,12 +1453,11 @@ ApplyPatch criu-no-expert.patch
|
|||
ApplyPatch mac80211-improve-latency-and-throughput-while-software.patch
|
||||
ApplyPatch iwlegacy-add-flush-callback.patch
|
||||
|
||||
#rhbz 903881
|
||||
ApplyPatch rtlwifi-Fix-scheduling-while-atomic-bug.patch
|
||||
|
||||
#rhbz 892811
|
||||
ApplyPatch ath9k_rx_dma_stop_check.patch
|
||||
|
||||
ApplyPatch pid-unlock_irq-when-alloc_pid-fails-because-init.patch
|
||||
|
||||
# END OF PATCH APPLICATIONS
|
||||
|
||||
%endif
|
||||
|
|
@ -2321,6 +2313,11 @@ fi
|
|||
# ||----w |
|
||||
# || ||
|
||||
%changelog
|
||||
* Fri Feb 08 2013 Josh Boyer <jwboyer@redhat.com> - 3.8.0-0.rc7.git0.1
|
||||
- Linux v3.8-rc7
|
||||
- Add patch to fix atomic sleep issue on alloc_pid failure (rhbz 894623)
|
||||
- Disable debugging options.
|
||||
|
||||
* Thu Feb 7 2013 Peter Robinson <pbrobinson@fedoraproject.org>
|
||||
- Minor ARM build fixes
|
||||
|
||||
|
|
|
|||
|
|
@ -0,0 +1,195 @@
|
|||
Path: news.gmane.org!not-for-mail
|
||||
From: ebiederm@xmission.com (Eric W. Biederman)
|
||||
Newsgroups: gmane.linux.kernel
|
||||
Subject: Re: Odd ENOMEM being returned in 3.8-rcX
|
||||
Date: Fri, 08 Feb 2013 12:13:09 -0800
|
||||
Lines: 117
|
||||
Approved: news@gmane.org
|
||||
Message-ID: <87k3qiwomi.fsf@xmission.com>
|
||||
References: <20130207215742.GB31684@hansolo.jdub.homelinux.org>
|
||||
<20130207141502.04625ea0.akpm@linux-foundation.org>
|
||||
<20130208003501.GC31684@hansolo.jdub.homelinux.org>
|
||||
<20130208181949.GD31684@hansolo.jdub.homelinux.org>
|
||||
NNTP-Posting-Host: plane.gmane.org
|
||||
Mime-Version: 1.0
|
||||
Content-Type: text/plain
|
||||
X-Trace: ger.gmane.org 1360354410 32723 80.91.229.3 (8 Feb 2013 20:13:30 GMT)
|
||||
X-Complaints-To: usenet@ger.gmane.org
|
||||
NNTP-Posting-Date: Fri, 8 Feb 2013 20:13:30 +0000 (UTC)
|
||||
Cc: Andrew Morton <akpm@linux-foundation.org>,
|
||||
Al Viro <viro@zeniv.linux.org.uk>,
|
||||
Mel Gorman <mgorman@suse.de>, linux-kernel@vger.kernel.org
|
||||
To: Josh Boyer <jwboyer@redhat.com>
|
||||
Original-X-From: linux-kernel-owner@vger.kernel.org Fri Feb 08 21:13:50 2013
|
||||
Return-path: <linux-kernel-owner@vger.kernel.org>
|
||||
Envelope-to: glk-linux-kernel-3@plane.gmane.org
|
||||
Original-Received: from vger.kernel.org ([209.132.180.67])
|
||||
by plane.gmane.org with esmtp (Exim 4.69)
|
||||
(envelope-from <linux-kernel-owner@vger.kernel.org>)
|
||||
id 1U3uKS-0003Ug-Vg
|
||||
for glk-linux-kernel-3@plane.gmane.org; Fri, 08 Feb 2013 21:13:49 +0100
|
||||
Original-Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
|
||||
id S932228Ab3BHUNT (ORCPT <rfc822;glk-linux-kernel-3@m.gmane.org>);
|
||||
Fri, 8 Feb 2013 15:13:19 -0500
|
||||
Original-Received: from out01.mta.xmission.com ([166.70.13.231]:45242 "EHLO
|
||||
out01.mta.xmission.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org
|
||||
with ESMTP id S932068Ab3BHUNS (ORCPT
|
||||
<rfc822;linux-kernel@vger.kernel.org>);
|
||||
Fri, 8 Feb 2013 15:13:18 -0500
|
||||
Original-Received: from in02.mta.xmission.com ([166.70.13.52])
|
||||
by out01.mta.xmission.com with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32)
|
||||
(Exim 4.76)
|
||||
(envelope-from <ebiederm@xmission.com>)
|
||||
id 1U3uJw-0002FX-87; Fri, 08 Feb 2013 13:13:16 -0700
|
||||
Original-Received: from c-98-207-153-68.hsd1.ca.comcast.net ([98.207.153.68] helo=eric-ThinkPad-X220.xmission.com)
|
||||
by in02.mta.xmission.com with esmtpsa (TLS1.0:DHE_RSA_AES_128_CBC_SHA1:16)
|
||||
(Exim 4.76)
|
||||
(envelope-from <ebiederm@xmission.com>)
|
||||
id 1U3uJt-0002Vi-8d; Fri, 08 Feb 2013 13:13:16 -0700
|
||||
In-Reply-To: <20130208181949.GD31684@hansolo.jdub.homelinux.org> (Josh Boyer's
|
||||
message of "Fri, 8 Feb 2013 13:19:49 -0500")
|
||||
User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.1 (gnu/linux)
|
||||
X-XM-AID: U2FsdGVkX19Djtj1/IXFytBzyU3W7XCCOHTPWCA75uo=
|
||||
X-SA-Exim-Connect-IP: 98.207.153.68
|
||||
X-SA-Exim-Mail-From: ebiederm@xmission.com
|
||||
X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on sa07.xmission.com
|
||||
X-Spam-Level:
|
||||
X-Spam-Status: No, score=-0.6 required=8.0 tests=ALL_TRUSTED,
|
||||
DCC_CHECK_NEGATIVE,FVGT_m_MULTI_ODD,T_TM2_M_HEADER_IN_MSG,T_XMDrugObfuBody_08
|
||||
autolearn=disabled version=3.3.2
|
||||
X-Spam-Report: * -1.0 ALL_TRUSTED Passed through trusted hosts only via SMTP
|
||||
* 0.0 T_TM2_M_HEADER_IN_MSG BODY: T_TM2_M_HEADER_IN_MSG
|
||||
* -0.0 DCC_CHECK_NEGATIVE Not listed in DCC
|
||||
* [sa07 1397; Body=1 Fuz1=1 Fuz2=1]
|
||||
* 0.4 FVGT_m_MULTI_ODD Contains multiple odd letter combinations
|
||||
* 0.0 T_XMDrugObfuBody_08 obfuscated drug references
|
||||
X-Spam-DCC: XMission; sa07 1397; Body=1 Fuz1=1 Fuz2=1
|
||||
X-Spam-Combo: ;Josh Boyer <jwboyer@redhat.com>
|
||||
X-Spam-Relay-Country:
|
||||
X-Spam-Flag: No
|
||||
X-SA-Exim-Version: 4.2.1 (built Wed, 14 Nov 2012 14:26:46 -0700)
|
||||
X-SA-Exim-Scanned: Yes (on in02.mta.xmission.com)
|
||||
Original-Sender: linux-kernel-owner@vger.kernel.org
|
||||
Precedence: bulk
|
||||
List-ID: <linux-kernel.vger.kernel.org>
|
||||
X-Mailing-List: linux-kernel@vger.kernel.org
|
||||
Xref: news.gmane.org gmane.linux.kernel:1438656
|
||||
Archived-At: <http://permalink.gmane.org/gmane.linux.kernel/1438656>
|
||||
|
||||
Josh Boyer <jwboyer@redhat.com> writes:
|
||||
|
||||
> On Thu, Feb 07, 2013 at 07:35:01PM -0500, Josh Boyer wrote:
|
||||
>> On Thu, Feb 07, 2013 at 02:15:02PM -0800, Andrew Morton wrote:
|
||||
>> > On Thu, 7 Feb 2013 16:57:42 -0500
|
||||
>> > Josh Boyer <jwboyer@redhat.com> wrote:
|
||||
>> >
|
||||
>> > > Hi All,
|
||||
>> > >
|
||||
>> > > We've hit a weird error in Fedora using the 3.8-rcX kernels. It seems
|
||||
>> > > the mock tool is getting back ENOMEM when doing very simple things that
|
||||
>> > > normally just work. The 3.7 kernels on the same userspace work just
|
||||
>> > > fine. It seems just running 'mock init -v' is enough to cause the
|
||||
>> > > failure.
|
||||
>> >
|
||||
>> > I assume you're not seeing the "page allocation failure" message and
|
||||
>> > backtrace. This means that either
|
||||
>>
|
||||
>> Right. If I disable our debug options, I see no backtraces at all and
|
||||
>> the python app still gets ENOMEM returned. (See below for those
|
||||
>> interested).
|
||||
>>
|
||||
>> > a) it's a __GFP_NOWARN callsite. This is rare. Or
|
||||
>> >
|
||||
>> > b) it's actually a different error but someone went and overwrote a
|
||||
>> > callee's return value with -ENOMEM. We do this a lot and it sucks.
|
||||
>>
|
||||
>> We do it in copy_io :\.
|
||||
>>
|
||||
>> > > At first glance it seems copy_io is failing (possibly because
|
||||
>> > > get_task_io_context fails), and then the above fallout is printed. The
|
||||
>> > > warning seems fairly valid, but I don't think that is the root of the
|
||||
>> > > problem.
|
||||
>> >
|
||||
>> > yes, get_task_io_context() might be the place. Tried adding a few
|
||||
>> > error-path printks in there to see what's happening?
|
||||
>>
|
||||
>> Yeah, that's my next step. I guess I know what I'll be doing tomorrow.
|
||||
>>
|
||||
>> > I can't see anything around there which leaves interrupts disabled
|
||||
>> > though. It's quite likely that there's some code with is forgetting to
|
||||
>> > reenable interrupts on a rarely-tested error path, and that ENOMEM is
|
||||
>> > tickling the bug.
|
||||
>>
|
||||
>> Right, agreed. As I said, I think that is mostly a secondary issue.
|
||||
>> Hopefully it will be easy to fix once we figure out why we're getting
|
||||
>> the ENOMEM error.
|
||||
>>
|
||||
>> Python backtrace below. Seems to be failing on forking a umount command
|
||||
>> after init'ing the chroot. I can put the full output somewhere if
|
||||
>> people are interested.
|
||||
>
|
||||
> OK. I've bisected this down to:
|
||||
>
|
||||
> 50804fe3737ca6a5942fdc2057a18a8141d00141 is the first bad commit
|
||||
> commit 50804fe3737ca6a5942fdc2057a18a8141d00141
|
||||
> Author: Eric W. Biederman <ebiederm@xmission.com>
|
||||
> Date: Tue Mar 2 15:41:50 2010 -0800
|
||||
>
|
||||
> pidns: Support unsharing the pid namespace.
|
||||
>
|
||||
>
|
||||
> I haven't really gotten much farther than that yet, but the bisect was
|
||||
> pretty straight forward. Eric, is there anything specific I can gather
|
||||
> or do to help figure out why that is causing mock to get such a weird
|
||||
> error? I can provide the bisect log if you'd like.
|
||||
|
||||
My best guess in some dark corner of mock has untested code to unshare a
|
||||
pid namespace, and that corner started doing something now that
|
||||
unsharing of the pid namespace actually works.
|
||||
|
||||
If mock has called unshare(CLONE_NEWPID). And then forked a process and
|
||||
that process exited, and then forked anothe process that second and all
|
||||
subsequent fork calls will fail with -ENOMEM (because init has exited in
|
||||
the pid namespace). -ENOMEM will be generated because of a failure of
|
||||
alloc_pid.
|
||||
|
||||
Looking at that code path a little closer that just about has to be it,
|
||||
because I goofed and the error path drops the lock but not irqs. The
|
||||
patch below should fix the nasty warning and confirm where the code is
|
||||
failing in copy_process.
|
||||
|
||||
An strace to see which syscalls mock is making and with which flags
|
||||
would be very interesting. I am almost certain that there is a
|
||||
unshare(CLONE_NEWPID) somewhere in there. But in a remote corner of
|
||||
possibility it could weird clone flags, or something else.
|
||||
|
||||
Beyond that I suspect we want to work with the mock folks so they get
|
||||
their code to use a pid namespace working the way they intended.
|
||||
|
||||
Eric
|
||||
|
||||
From: "Eric W. Biederman" <ebiederm@xmission.com>
|
||||
Date: Fri, 8 Feb 2013 12:05:54 -0800
|
||||
Subject: [PATCH] pid: unlock_irq when alloc_pid fails because init has
|
||||
exited.
|
||||
|
||||
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
|
||||
---
|
||||
kernel/pid.c | 2 +-
|
||||
1 files changed, 1 insertions(+), 1 deletions(-)
|
||||
|
||||
diff --git a/kernel/pid.c b/kernel/pid.c
|
||||
index de9af60..f2c6a68 100644
|
||||
--- a/kernel/pid.c
|
||||
+++ b/kernel/pid.c
|
||||
@@ -331,7 +331,7 @@ out:
|
||||
return pid;
|
||||
|
||||
out_unlock:
|
||||
- spin_unlock(&pidmap_lock);
|
||||
+ spin_unlock_irq(&pidmap_lock);
|
||||
out_free:
|
||||
while (++i <= ns->level)
|
||||
free_pidmap(pid->numbers + i);
|
||||
--
|
||||
1.7.5.4
|
||||
|
|
@ -1,65 +0,0 @@
|
|||
Kernel commits 41affd5 and 6539306 changed the locking in rtl_lps_leave()
|
||||
from a spinlock to a mutex by doing the calls indirectly from a work queue
|
||||
to reduce the time that interrupts were disabled. This change was fine for
|
||||
most systems; however a scheduling while atomic bug was reported in
|
||||
https://bugzilla.redhat.com/show_bug.cgi?id=903881. The backtrace indicates
|
||||
that routine rtl_is_special(), which calls rtl_lps_leave() in three places
|
||||
was entered in atomic context. These direct calls are replaced by putting a
|
||||
request on the appropriate work queue.
|
||||
|
||||
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
|
||||
Reported-and-tested-by: Nathaniel Doherty <ntdoherty@gmail.com>
|
||||
Cc: Nathaniel Doherty <ntdoherty@gmail.com>
|
||||
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
|
||||
Cc: Stable <stable@vger.kernel.org>
|
||||
---
|
||||
|
||||
John,
|
||||
|
||||
If DaveM will still accept bug fixes for 3.8, please push this one. It
|
||||
is unlikely to have any side effects.
|
||||
|
||||
Thanks,
|
||||
|
||||
Larry
|
||||
---
|
||||
|
||||
base.c | 7 ++++---
|
||||
1 file changed, 4 insertions(+), 3 deletions(-)
|
||||
|
||||
Index: wireless-testing-new/drivers/net/wireless/rtlwifi/base.c
|
||||
===================================================================
|
||||
--- wireless-testing-new.orig/drivers/net/wireless/rtlwifi/base.c
|
||||
+++ wireless-testing-new/drivers/net/wireless/rtlwifi/base.c
|
||||
@@ -1004,7 +1004,8 @@ u8 rtl_is_special_data(struct ieee80211_
|
||||
is_tx ? "Tx" : "Rx");
|
||||
|
||||
if (is_tx) {
|
||||
- rtl_lps_leave(hw);
|
||||
+ schedule_work(&rtlpriv->
|
||||
+ works.lps_leave_work);
|
||||
ppsc->last_delaylps_stamp_jiffies =
|
||||
jiffies;
|
||||
}
|
||||
@@ -1014,7 +1015,7 @@ u8 rtl_is_special_data(struct ieee80211_
|
||||
}
|
||||
} else if (ETH_P_ARP == ether_type) {
|
||||
if (is_tx) {
|
||||
- rtl_lps_leave(hw);
|
||||
+ schedule_work(&rtlpriv->works.lps_leave_work);
|
||||
ppsc->last_delaylps_stamp_jiffies = jiffies;
|
||||
}
|
||||
|
||||
@@ -1024,7 +1025,7 @@ u8 rtl_is_special_data(struct ieee80211_
|
||||
"802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
|
||||
|
||||
if (is_tx) {
|
||||
- rtl_lps_leave(hw);
|
||||
+ schedule_work(&rtlpriv->works.lps_leave_work);
|
||||
ppsc->last_delaylps_stamp_jiffies = jiffies;
|
||||
}
|
||||
|
||||
--
|
||||
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
|
||||
the body of a message to majordomo@vger.kernel.org
|
||||
More majordomo info at http://vger.kernel.org/majordomo-info.html
|
||||
Loading…
Reference in New Issue