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[PATCH 4.2 000/124] 4.2.7-stable review

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  [PATCH 4.2 000/124] 4.2.7-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 006/124] macvtap: unbreak receiving of gro skb with frag list Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 023/124] sfc: push partner queue for skb->xmit_more Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 035/124] ARM: tegra: paz00: use con_ids to refer GPIOs in gpiod_lookup table Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 014/124] RDS-TCP: Recover correctly from pskb_pull()/pksb_trim() failure in rds_tcp_data_recv Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 033/124] ARM: common: edma: Fix channel parameter for irq callbacks Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 025/124] ipv6: clean up dev_snmp6 proc entry when we fail to initialize inet6_dev Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 003/124] tcp: remove improper preemption check in tcp_xmit_probe_skb() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 032/124] ARM: 8427/1: dma-mapping: add support for offset parameter in dma_mmap() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 011/124] ipv6: gre: support SIT encapsulation Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 026/124] ipv4: disable BH when changing ip local port range Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 010/124] net: fec: Remove unneeded use of IS_ERR_VALUE() macro Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 009/124] amd-xgbe: Fix race between access of desc and desc index Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 008/124] amd-xgbe: Use wmb before updating current descriptor count Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 004/124] netlink: fix locking around NETLINK_LIST_MEMBERSHIPS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 028/124] bonding: fix panic on non-ARPHRD_ETHER enslave failure Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 002/124] tipc: allow non-linear first fragment buffer Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 030/124] RDS: verify the underlying transport exists before creating a connection Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 027/124] packet: race condition in packet_bind Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 031/124] ARM: 8426/1: dma-mapping: add missing range check in dma_mmap() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    [PATCH 4.2 029/124] net: fix a race in dst_release() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-07 17:20 +0100
    Re: [PATCH 4.2 000/124] 4.2.7-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2015-12-07 18:20 +0100
    Re: [PATCH 4.2 000/124] 4.2.7-stable review Guenter Roeck <linux@roeck-us.net> - 2015-12-07 22:40 +0100
      Re: [PATCH 4.2 000/124] 4.2.7-stable review Kevin Hilman <khilman@kernel.org> - 2015-12-07 23:00 +0100
      Re: [PATCH 4.2 000/124] 4.2.7-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-09 04:30 +0100
    Re: [PATCH 4.2 000/124] 4.2.7-stable review Sudip Mukherjee <sudipm.mukherjee@gmail.com> - 2015-12-08 06:00 +0100
      Re: [PATCH 4.2 000/124] 4.2.7-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-12-09 04:20 +0100

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#1285761 — [PATCH 4.2 029/124] net: fix a race in dst_release()

4.2-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit d69bbf88c8d0b367cf3e3a052f6daadf630ee566 ]

Only cpu seeing dst refcount going to 0 can safely
dereference dst->flags.

Otherwise an other cpu might already have freed the dst.

Fixes: 27b75c95f10d ("net: avoid RCU for NOCACHE dst")
Reported-by: Greg Thelen <gthelen@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 net/core/dst.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -287,7 +287,7 @@ void dst_release(struct dst_entry *dst)
 		if (unlikely(newrefcnt < 0))
 			net_warn_ratelimited("%s: dst:%p refcnt:%d\n",
 					     __func__, dst, newrefcnt);
-		if (unlikely(dst->flags & DST_NOCACHE) && !newrefcnt)
+		if (!newrefcnt && unlikely(dst->flags & DST_NOCACHE))
 			call_rcu(&dst->rcu_head, dst_destroy_rcu);
 	}
 }


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#1285814

On 12/07/2015 07:54 AM, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.2.7 release.
> There are 124 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
> Anything received after that time might be too late.
> 
> The whole patch series can be found in one patch at:
> 	kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.2.7-rc1.gz
> and the diffstat can be found below.
> 
> thanks,
> 
> greg k-h
> 


Compiled and booted on my test system. No dmesg regressions.

thanks,
-- Shuah

-- 
Shuah Khan
Sr. Linux Kernel Developer
Open Source Innovation Group
Samsung Research America (Silicon Valley)
shuahkh@osg.samsung.com | (970) 217-8978
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#1285961

On Mon, Dec 07, 2015 at 09:54:50AM -0500, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.2.7 release.
> There are 124 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
> Anything received after that time might be too late.
> 

Build results:
	total: 145 pass: 140 fail: 5
Failed builds:
	arm:allmodconfig
	arm:imx_v6_v7_defconfig
	arm:omap1_defconfig
	s390:defconfig
	s390:allmodconfig

Qemu test results:
	total: 95 pass: 84 fail: 11
Failed tests:
	arm:kzm:imx_v6_v7_defconfig
	arm:beagle:multi_v7_defconfig:omap3-beagle
	arm:beaglexm:multi_v7_defconfig:omap3-beagle-xm
	arm:overo:multi_v7_defconfig:omap3-overo-tobi
	arm:vexpress-a9:multi_v7_defconfig:vexpress-v2p-ca9
	arm:vexpress-a15:multi_v7_defconfig:vexpress-v2p-ca15-tc1
	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zc702
	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zc706
	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zed
	arm:smdkc210:multi_v7_defconfig:exynos4210-smdkv310
	s390:defconfig

On top of the s390 failures, which are the same as for 4.1 and 4.3,
several arm builds fail as follows.

./arch/arm/include/asm/irq.h: Assembler messages:
./arch/arm/include/asm/irq.h:40: Error:
	bad instruction `static inline int nr_legacy_irqs(void)'
./arch/arm/include/asm/irq.h:41: Error:
	junk at end of line, first unrecognized character is `{'
./arch/arm/include/asm/irq.h:42: Error:
	bad instruction `return 16'
./arch/arm/include/asm/irq.h:43: Error:
	junk at end of line, first unrecognized character is `}'

Culprit is 'xen/events: Always allocate legacy interrupts on PV guests'.
Function 'static inline int nr_legacy_irqs(void)' is applied outside the
'#ifndef __ASSEMBLY__' conditional, which causes the compile failures.

Details are available at http://server.roeck-us.net:8010/builders.

Guenter
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#1285986

On Mon, Dec 7, 2015 at 1:36 PM, Guenter Roeck <linux@roeck-us.net> wrote:
> On Mon, Dec 07, 2015 at 09:54:50AM -0500, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 4.2.7 release.
>> There are 124 patches in this series, all will be posted as a response
>> to this one.  If anyone has any issues with these being applied, please
>> let me know.
>>
>> Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
>> Anything received after that time might be too late.
>>
>
> Build results:
>         total: 145 pass: 140 fail: 5
> Failed builds:
>         arm:allmodconfig
>         arm:imx_v6_v7_defconfig
>         arm:omap1_defconfig
>         s390:defconfig
>         s390:allmodconfig

[...]

> On top of the s390 failures, which are the same as for 4.1 and 4.3,
> several arm builds fail as follows.
>
> ./arch/arm/include/asm/irq.h: Assembler messages:
> ./arch/arm/include/asm/irq.h:40: Error:
>         bad instruction `static inline int nr_legacy_irqs(void)'
> ./arch/arm/include/asm/irq.h:41: Error:
>         junk at end of line, first unrecognized character is `{'
> ./arch/arm/include/asm/irq.h:42: Error:
>         bad instruction `return 16'
> ./arch/arm/include/asm/irq.h:43: Error:
>         junk at end of line, first unrecognized character is `}'
>
> Culprit is 'xen/events: Always allocate legacy interrupts on PV guests'.
> Function 'static inline int nr_legacy_irqs(void)' is applied outside the
> '#ifndef __ASSEMBLY__' conditional, which causes the compile failures.

A handful of other ARM defconfig/fragments are failing to build in
kernelci.org as well[1], but with the same root cause.

Kevin

[1] http://kernelci.org/build/stable-queue/kernel/v4.2.6-124-g9066eb470b51/
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#1287055

On Mon, Dec 07, 2015 at 01:36:16PM -0800, Guenter Roeck wrote:
> On Mon, Dec 07, 2015 at 09:54:50AM -0500, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 4.2.7 release.
> > There are 124 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> > 
> > Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
> > Anything received after that time might be too late.
> > 
> 
> Build results:
> 	total: 145 pass: 140 fail: 5
> Failed builds:
> 	arm:allmodconfig
> 	arm:imx_v6_v7_defconfig
> 	arm:omap1_defconfig
> 	s390:defconfig
> 	s390:allmodconfig
> 
> Qemu test results:
> 	total: 95 pass: 84 fail: 11
> Failed tests:
> 	arm:kzm:imx_v6_v7_defconfig
> 	arm:beagle:multi_v7_defconfig:omap3-beagle
> 	arm:beaglexm:multi_v7_defconfig:omap3-beagle-xm
> 	arm:overo:multi_v7_defconfig:omap3-overo-tobi
> 	arm:vexpress-a9:multi_v7_defconfig:vexpress-v2p-ca9
> 	arm:vexpress-a15:multi_v7_defconfig:vexpress-v2p-ca15-tc1
> 	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zc702
> 	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zc706
> 	arm:xilinx-zynq-a9:multi_v7_defconfig:zynq-zed
> 	arm:smdkc210:multi_v7_defconfig:exynos4210-smdkv310
> 	s390:defconfig
> 
> On top of the s390 failures, which are the same as for 4.1 and 4.3,
> several arm builds fail as follows.
> 
> ./arch/arm/include/asm/irq.h: Assembler messages:
> ./arch/arm/include/asm/irq.h:40: Error:
> 	bad instruction `static inline int nr_legacy_irqs(void)'
> ./arch/arm/include/asm/irq.h:41: Error:
> 	junk at end of line, first unrecognized character is `{'
> ./arch/arm/include/asm/irq.h:42: Error:
> 	bad instruction `return 16'
> ./arch/arm/include/asm/irq.h:43: Error:
> 	junk at end of line, first unrecognized character is `}'
> 
> Culprit is 'xen/events: Always allocate legacy interrupts on PV guests'.
> Function 'static inline int nr_legacy_irqs(void)' is applied outside the
> '#ifndef __ASSEMBLY__' conditional, which causes the compile failures.
> 
> Details are available at http://server.roeck-us.net:8010/builders.

Thanks for letting me know, patch is now fixed up.

greg k-h
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#1286234

On Mon, Dec 07, 2015 at 09:54:50AM -0500, Greg Kroah-Hartman wrote:
> This is the start of the stable review cycle for the 4.2.7 release.
> There are 124 patches in this series, all will be posted as a response
> to this one.  If anyone has any issues with these being applied, please
> let me know.
> 
> Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
> Anything received after that time might be too late.

Apart from the failures Guenter reported, for me tile and tilegx
allmodconfig fails. Its known failure. Fix is:

3a48d13d76c0 ("tile: fix build failure")

Build logs at:
https://travis-ci.org/sudipm-mukherjee/stable/builds/95370057

regards
sudip
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#1287045

On Tue, Dec 08, 2015 at 10:26:53AM +0530, Sudip Mukherjee wrote:
> On Mon, Dec 07, 2015 at 09:54:50AM -0500, Greg Kroah-Hartman wrote:
> > This is the start of the stable review cycle for the 4.2.7 release.
> > There are 124 patches in this series, all will be posted as a response
> > to this one.  If anyone has any issues with these being applied, please
> > let me know.
> > 
> > Responses should be made by Wed Dec  9 14:48:34 UTC 2015.
> > Anything received after that time might be too late.
> 
> Apart from the failures Guenter reported, for me tile and tilegx
> allmodconfig fails. Its known failure. Fix is:
> 
> 3a48d13d76c0 ("tile: fix build failure")

Now queued up, thanks.

greg k-h
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