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Groups > linux.kernel > #1397634 > unrolled thread
| Started by | Eric Dumazet <edumazet@google.com> |
|---|---|
| First post | 2016-05-10 03:50 +0200 |
| Last post | 2016-05-13 05:40 +0200 |
| Articles | 4 — 2 participants |
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Re: [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. Eric Dumazet <edumazet@google.com> - 2016-05-10 03:50 +0200
Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. "Huang\, Ying" <ying.huang@intel.com> - 2016-05-11 04:20 +0200
Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. "Huang\, Ying" <ying.huang@intel.com> - 2016-05-13 05:10 +0200
Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. Eric Dumazet <edumazet@google.com> - 2016-05-13 05:40 +0200
| From | Eric Dumazet <edumazet@google.com> |
|---|---|
| Date | 2016-05-10 03:50 +0200 |
| Subject | Re: [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. |
| Message-ID | <rx4Y9-OL-1@gated-at.bofh.it> |
On Mon, May 9, 2016 at 6:26 PM, Huang, Ying <ying.huang@linux.intel.com> wrote:
> Hi, Eric,
>
> kernel test robot <ying.huang@linux.intel.com> writes:
>> FYI, we noticed the following commit:
>>
>> git://internal_merge_and_test_tree devel-catchup-201604281529
>> commit 9317bb69824ec8d078b0b786b6971aedb0af3d4f ("net: SOCKWQ_ASYNC_NOSPACE optimizations")
>>
>> on test machine: vm-kbuild-2G: 2 threads qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap with 2G memory
>>
>> caused below changes:
>>
>>
>> +--------------------------------------------------+------------+------------+
>> | | 210732d16d | 9317bb6982 |
>> +--------------------------------------------------+------------+------------+
>> | boot_successes | 40 | 13 |
>> | boot_failures | 0 | 27 |
>> | INFO:task_blocked_for_more_than#seconds | 0 | 27 |
>> | RIP:native_safe_halt | 0 | 20 |
>> | RIP:native_write_msr_safe | 0 | 27 |
>> | Kernel_panic-not_syncing:hung_task:blocked_tasks | 0 | 27 |
>> | backtrace:__close_fd | 0 | 27 |
>> | backtrace:SyS_close | 0 | 27 |
>> | backtrace:cpu_startup_entry | 0 | 19 |
>> | backtrace:watchdog | 0 | 27 |
>> | RIP:__lock_acquire | 0 | 2 |
>> | backtrace:rpc_async_schedule | 0 | 2 |
>> | backtrace:lock_acquire | 0 | 1 |
>> | RIP:delay_tsc | 0 | 1 |
>> | backtrace:SYSC_epoll_wait | 0 | 1 |
>> | backtrace:SyS_epoll_wait | 0 | 1 |
>> | RIP:pvclock_clocksource_read | 0 | 1 |
>> | RIP:xs_reclassify_socket | 0 | 1 |
>> | backtrace:xs_tcp_setup_socket | 0 | 2 |
>> | RIP:insert_work | 0 | 1 |
>> +--------------------------------------------------+------------+------------+
>
> We recently found this patch cause NFS hang in 0day/LKP test system.
> The NFS export can be mounted, but after a while all read/write to NFS
> mount blocked. This influenced the 0day/LKP testing. Could you help us
> to fix this?
>
> Best Regards,
> Huang, Ying
I need to officially submit this patch :
http://www.spinics.net/lists/netdev/msg375777.html
Thanks.
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| From | "Huang\, Ying" <ying.huang@intel.com> |
|---|---|
| Date | 2016-05-11 04:20 +0200 |
| Subject | Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. |
| Message-ID | <rxrUK-7es-5@gated-at.bofh.it> |
| In reply to | #1397634 |
Eric Dumazet <edumazet@google.com> writes:
> On Mon, May 9, 2016 at 6:26 PM, Huang, Ying <ying.huang@linux.intel.com> wrote:
>> Hi, Eric,
>>
>> kernel test robot <ying.huang@linux.intel.com> writes:
>>> FYI, we noticed the following commit:
>>>
>>> git://internal_merge_and_test_tree devel-catchup-201604281529
>>> commit 9317bb69824ec8d078b0b786b6971aedb0af3d4f ("net: SOCKWQ_ASYNC_NOSPACE optimizations")
>>>
>>> on test machine: vm-kbuild-2G: 2 threads qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap with 2G memory
>>>
>>> caused below changes:
>>>
>>>
>>> +--------------------------------------------------+------------+------------+
>>> | | 210732d16d | 9317bb6982 |
>>> +--------------------------------------------------+------------+------------+
>>> | boot_successes | 40 | 13 |
>>> | boot_failures | 0 | 27 |
>>> | INFO:task_blocked_for_more_than#seconds | 0 | 27 |
>>> | RIP:native_safe_halt | 0 | 20 |
>>> | RIP:native_write_msr_safe | 0 | 27 |
>>> | Kernel_panic-not_syncing:hung_task:blocked_tasks | 0 | 27 |
>>> | backtrace:__close_fd | 0 | 27 |
>>> | backtrace:SyS_close | 0 | 27 |
>>> | backtrace:cpu_startup_entry | 0 | 19 |
>>> | backtrace:watchdog | 0 | 27 |
>>> | RIP:__lock_acquire | 0 | 2 |
>>> | backtrace:rpc_async_schedule | 0 | 2 |
>>> | backtrace:lock_acquire | 0 | 1 |
>>> | RIP:delay_tsc | 0 | 1 |
>>> | backtrace:SYSC_epoll_wait | 0 | 1 |
>>> | backtrace:SyS_epoll_wait | 0 | 1 |
>>> | RIP:pvclock_clocksource_read | 0 | 1 |
>>> | RIP:xs_reclassify_socket | 0 | 1 |
>>> | backtrace:xs_tcp_setup_socket | 0 | 2 |
>>> | RIP:insert_work | 0 | 1 |
>>> +--------------------------------------------------+------------+------------+
>>
>> We recently found this patch cause NFS hang in 0day/LKP test system.
>> The NFS export can be mounted, but after a while all read/write to NFS
>> mount blocked. This influenced the 0day/LKP testing. Could you help us
>> to fix this?
>>
>> Best Regards,
>> Huang, Ying
>
>
> I need to officially submit this patch :
> http://www.spinics.net/lists/netdev/msg375777.html
Thanks a lot! The patch fixed our NFS hang.
Tested-by: Huang, Ying <ying.huang@intel.com>
Is it possible to put the fixing patch near (preferably next) the patch
trigger regression? Otherwise a bigger range of patches will not be
bisectable.
Best Regards,
Huang, Ying
[toc] | [prev] | [next] | [standalone]
| From | "Huang\, Ying" <ying.huang@intel.com> |
|---|---|
| Date | 2016-05-13 05:10 +0200 |
| Subject | Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. |
| Message-ID | <rybEd-2Qe-5@gated-at.bofh.it> |
| In reply to | #1398639 |
"Huang, Ying" <ying.huang@intel.com> writes:
> Eric Dumazet <edumazet@google.com> writes:
>> On Mon, May 9, 2016 at 6:26 PM, Huang, Ying <ying.huang@linux.intel.com> wrote:
>>> Hi, Eric,
>>>
>>> kernel test robot <ying.huang@linux.intel.com> writes:
>>>> FYI, we noticed the following commit:
>>>>
>>>> git://internal_merge_and_test_tree devel-catchup-201604281529
>>>> commit 9317bb69824ec8d078b0b786b6971aedb0af3d4f ("net: SOCKWQ_ASYNC_NOSPACE optimizations")
>>>>
>>>> on test machine: vm-kbuild-2G: 2 threads qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap with 2G memory
>>>>
>>>> caused below changes:
>>>>
>>>>
>>>> +--------------------------------------------------+------------+------------+
>>>> | | 210732d16d | 9317bb6982 |
>>>> +--------------------------------------------------+------------+------------+
>>>> | boot_successes | 40 | 13 |
>>>> | boot_failures | 0 | 27 |
>>>> | INFO:task_blocked_for_more_than#seconds | 0 | 27 |
>>>> | RIP:native_safe_halt | 0 | 20 |
>>>> | RIP:native_write_msr_safe | 0 | 27 |
>>>> | Kernel_panic-not_syncing:hung_task:blocked_tasks | 0 | 27 |
>>>> | backtrace:__close_fd | 0 | 27 |
>>>> | backtrace:SyS_close | 0 | 27 |
>>>> | backtrace:cpu_startup_entry | 0 | 19 |
>>>> | backtrace:watchdog | 0 | 27 |
>>>> | RIP:__lock_acquire | 0 | 2 |
>>>> | backtrace:rpc_async_schedule | 0 | 2 |
>>>> | backtrace:lock_acquire | 0 | 1 |
>>>> | RIP:delay_tsc | 0 | 1 |
>>>> | backtrace:SYSC_epoll_wait | 0 | 1 |
>>>> | backtrace:SyS_epoll_wait | 0 | 1 |
>>>> | RIP:pvclock_clocksource_read | 0 | 1 |
>>>> | RIP:xs_reclassify_socket | 0 | 1 |
>>>> | backtrace:xs_tcp_setup_socket | 0 | 2 |
>>>> | RIP:insert_work | 0 | 1 |
>>>> +--------------------------------------------------+------------+------------+
>>>
>>> We recently found this patch cause NFS hang in 0day/LKP test system.
>>> The NFS export can be mounted, but after a while all read/write to NFS
>>> mount blocked. This influenced the 0day/LKP testing. Could you help us
>>> to fix this?
>>>
>>> Best Regards,
>>> Huang, Ying
>>
>>
>> I need to officially submit this patch :
>> http://www.spinics.net/lists/netdev/msg375777.html
>
> Thanks a lot! The patch fixed our NFS hang.
>
> Tested-by: Huang, Ying <ying.huang@intel.com>
>
> Is it possible to put the fixing patch near (preferably next) the patch
> trigger regression? Otherwise a bigger range of patches will not be
> bisectable.
Hi, Eric,
Is it possible for this to be fixed in linux-next ASAP? This has
blocked us (0day functionality and performance test) from testing
linux-next and many other git trees for near 1 week. Because NFS is
used in our test infrastructure to save test result data.
Best Regards,
Huang, Ying
[toc] | [prev] | [next] | [standalone]
| From | Eric Dumazet <edumazet@google.com> |
|---|---|
| Date | 2016-05-13 05:40 +0200 |
| Subject | Re: [LKP] [lkp] [net] 9317bb6982: INFO: task cat-kmsg:893 blocked for more than 300 seconds. |
| Message-ID | <ryc7g-33r-5@gated-at.bofh.it> |
| In reply to | #1400468 |
Oh right, sorry for the delay.
On Thu, May 12, 2016 at 8:01 PM, Huang, Ying <ying.huang@intel.com> wrote:
> "Huang, Ying" <ying.huang@intel.com> writes:
>
>> Eric Dumazet <edumazet@google.com> writes:
>>> On Mon, May 9, 2016 at 6:26 PM, Huang, Ying <ying.huang@linux.intel.com> wrote:
>>>> Hi, Eric,
>>>>
>>>> kernel test robot <ying.huang@linux.intel.com> writes:
>>>>> FYI, we noticed the following commit:
>>>>>
>>>>> git://internal_merge_and_test_tree devel-catchup-201604281529
>>>>> commit 9317bb69824ec8d078b0b786b6971aedb0af3d4f ("net: SOCKWQ_ASYNC_NOSPACE optimizations")
>>>>>
>>>>> on test machine: vm-kbuild-2G: 2 threads qemu-system-x86_64 -enable-kvm -cpu Haswell,+smep,+smap with 2G memory
>>>>>
>>>>> caused below changes:
>>>>>
>>>>>
>>>>> +--------------------------------------------------+------------+------------+
>>>>> | | 210732d16d | 9317bb6982 |
>>>>> +--------------------------------------------------+------------+------------+
>>>>> | boot_successes | 40 | 13 |
>>>>> | boot_failures | 0 | 27 |
>>>>> | INFO:task_blocked_for_more_than#seconds | 0 | 27 |
>>>>> | RIP:native_safe_halt | 0 | 20 |
>>>>> | RIP:native_write_msr_safe | 0 | 27 |
>>>>> | Kernel_panic-not_syncing:hung_task:blocked_tasks | 0 | 27 |
>>>>> | backtrace:__close_fd | 0 | 27 |
>>>>> | backtrace:SyS_close | 0 | 27 |
>>>>> | backtrace:cpu_startup_entry | 0 | 19 |
>>>>> | backtrace:watchdog | 0 | 27 |
>>>>> | RIP:__lock_acquire | 0 | 2 |
>>>>> | backtrace:rpc_async_schedule | 0 | 2 |
>>>>> | backtrace:lock_acquire | 0 | 1 |
>>>>> | RIP:delay_tsc | 0 | 1 |
>>>>> | backtrace:SYSC_epoll_wait | 0 | 1 |
>>>>> | backtrace:SyS_epoll_wait | 0 | 1 |
>>>>> | RIP:pvclock_clocksource_read | 0 | 1 |
>>>>> | RIP:xs_reclassify_socket | 0 | 1 |
>>>>> | backtrace:xs_tcp_setup_socket | 0 | 2 |
>>>>> | RIP:insert_work | 0 | 1 |
>>>>> +--------------------------------------------------+------------+------------+
>>>>
>>>> We recently found this patch cause NFS hang in 0day/LKP test system.
>>>> The NFS export can be mounted, but after a while all read/write to NFS
>>>> mount blocked. This influenced the 0day/LKP testing. Could you help us
>>>> to fix this?
>>>>
>>>> Best Regards,
>>>> Huang, Ying
>>>
>>>
>>> I need to officially submit this patch :
>>> http://www.spinics.net/lists/netdev/msg375777.html
>>
>> Thanks a lot! The patch fixed our NFS hang.
>>
>> Tested-by: Huang, Ying <ying.huang@intel.com>
>>
>> Is it possible to put the fixing patch near (preferably next) the patch
>> trigger regression? Otherwise a bigger range of patches will not be
>> bisectable.
>
> Hi, Eric,
>
> Is it possible for this to be fixed in linux-next ASAP? This has
> blocked us (0day functionality and performance test) from testing
> linux-next and many other git trees for near 1 week. Because NFS is
> used in our test infrastructure to save test result data.
>
> Best Regards,
> Huang, Ying
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