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Re: [PATCH 3.14 000/125] 3.14.49-stable review

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  Re: [PATCH 3.14 000/125] 3.14.49-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-08-03 18:20 +0200
    Re: [PATCH 3.14 000/125] 3.14.49-stable review Shuah Khan <shuahkh@osg.samsung.com> - 2015-08-03 21:10 +0200
      Re: [PATCH 3.14 000/125] 3.14.49-stable review Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2015-08-03 23:20 +0200

#1199004 — Re: [PATCH 3.14 000/125] 3.14.49-stable review

On Sat, Aug 01, 2015 at 12:42:02PM +0530, Sudip Mukherjee wrote:
> On Sat, Aug 01, 2015 at 12:39:25PM +0530, Sudip Mukherjee wrote:
> > On Fri, Jul 31, 2015 at 12:40:00PM -0700, Greg Kroah-Hartman wrote:
> > > This is the start of the stable review cycle for the 3.14.49 release.
> > > There are 125 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 Sun Aug  2 19:40:05 UTC 2015.
> > > Anything received after that time might be too late.
> > Compiled and booted on x86_32.
> > 
> > While kselftest got a report of segmentation fault and in dmesg:
> > psock_fanout[2509]: segfault at 401fd000 ip 080492ab sp bfc40cd0 error 4
> > 	in psock_fanout[8048000+2000]
> 
> Missed a clarification, kselftest is not there. ran the tests with:
> sudo make -C tools/testing/selftests run_tests

Is this something new that shows up in 3.14.49-rc1 and is not in .48?

thanks,

greg k-h
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#1199193

On 08/03/2015 10:17 AM, Greg Kroah-Hartman wrote:
> On Sat, Aug 01, 2015 at 12:42:02PM +0530, Sudip Mukherjee wrote:
>> On Sat, Aug 01, 2015 at 12:39:25PM +0530, Sudip Mukherjee wrote:
>>> On Fri, Jul 31, 2015 at 12:40:00PM -0700, Greg Kroah-Hartman wrote:
>>>> This is the start of the stable review cycle for the 3.14.49 release.
>>>> There are 125 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 Sun Aug  2 19:40:05 UTC 2015.
>>>> Anything received after that time might be too late.
>>> Compiled and booted on x86_32.
>>>
>>> While kselftest got a report of segmentation fault and in dmesg:
>>> psock_fanout[2509]: segfault at 401fd000 ip 080492ab sp bfc40cd0 error 4
>>> 	in psock_fanout[8048000+2000]
>>
>> Missed a clarification, kselftest is not there. ran the tests with:

kselftest target isn't in 3.14. It was added to 3.17 or 3.18.

>> sudo make -C tools/testing/selftests run_tests
> 
> Is this something new that shows up in 3.14.49-rc1 and is not in .48?
> 

This is a known issue, fixed in 3.19?? - the following is the commit.
Adding Dave Miller to the thread.

commit fbf8e7211ac7858d3df4a4203c18da7a58560784
Author: Shuah Khan <shuahkh@osg.samsung.com>
Date:   Tue Nov 11 10:04:13 2014 -0700

    selftests/net: psock_fanout seg faults in sock_fanout_read_ring()

    The while loop in sock_fanout_read_ring() checks mmap region
    bounds after access, causing it to segfault. Fix it to check
    count before accessing header->tp_status. This problem can be
    reproduced consistently when the test in run as follows:

        make -C tools/testing/selftests TARGETS=net run_tests
        or
        make run_tests from tools/testing/selftests
        or
        make run_test from tools/testing/selftests/net

    Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>

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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#1199267

On Mon, Aug 03, 2015 at 01:03:10PM -0600, Shuah Khan wrote:
> On 08/03/2015 10:17 AM, Greg Kroah-Hartman wrote:
> > On Sat, Aug 01, 2015 at 12:42:02PM +0530, Sudip Mukherjee wrote:
> >> On Sat, Aug 01, 2015 at 12:39:25PM +0530, Sudip Mukherjee wrote:
> >>> On Fri, Jul 31, 2015 at 12:40:00PM -0700, Greg Kroah-Hartman wrote:
> >>>> This is the start of the stable review cycle for the 3.14.49 release.
> >>>> There are 125 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 Sun Aug  2 19:40:05 UTC 2015.
> >>>> Anything received after that time might be too late.
> >>> Compiled and booted on x86_32.
> >>>
> >>> While kselftest got a report of segmentation fault and in dmesg:
> >>> psock_fanout[2509]: segfault at 401fd000 ip 080492ab sp bfc40cd0 error 4
> >>> 	in psock_fanout[8048000+2000]
> >>
> >> Missed a clarification, kselftest is not there. ran the tests with:
> 
> kselftest target isn't in 3.14. It was added to 3.17 or 3.18.
> 
> >> sudo make -C tools/testing/selftests run_tests
> > 
> > Is this something new that shows up in 3.14.49-rc1 and is not in .48?
> > 
> 
> This is a known issue, fixed in 3.19?? - the following is the commit.
> Adding Dave Miller to the thread.
> 
> commit fbf8e7211ac7858d3df4a4203c18da7a58560784
> Author: Shuah Khan <shuahkh@osg.samsung.com>
> Date:   Tue Nov 11 10:04:13 2014 -0700
> 
>     selftests/net: psock_fanout seg faults in sock_fanout_read_ring()
> 
>     The while loop in sock_fanout_read_ring() checks mmap region
>     bounds after access, causing it to segfault. Fix it to check
>     count before accessing header->tp_status. This problem can be
>     reproduced consistently when the test in run as follows:
> 
>         make -C tools/testing/selftests TARGETS=net run_tests
>         or
>         make run_tests from tools/testing/selftests
>         or
>         make run_test from tools/testing/selftests/net
> 
>     Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
>     Signed-off-by: David S. Miller <davem@davemloft.net>

Ah, that showed up in 3.18, and it's not worth adding it to 3.14 if the
other selftest infrastructure isn't realy there either.

thanks,

greg k-h
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