* Possible tcp regression in 4.14.13..26
@ 2018-03-13 21:41 Timofey Titovets
2018-03-13 21:45 ` Eric Dumazet
0 siblings, 1 reply; 2+ messages in thread
From: Timofey Titovets @ 2018-03-13 21:41 UTC (permalink / raw)
To: netdev
Hi list,
We currently upgrade our servers from 4.14.13 to 4.14.26
And get some problems with random kernel oops by:
[ 422.081094] BUG: unable to handle kernel NULL pointer dereference
at 0000000000000038
[ 422.081254] IP: tcp_push+0x42/0x110
[ 422.081314] PGD 0 P4D 0
[ 422.081364] Oops: 0002 [#1] SMP PTI
Currently we assume that this caused by:
net: tcp: close sock if net namespace is exiting
[ Upstream commit 4ee806d51176ba7b8ff1efd81f271d7252e03a1d ]
If that can helps we heavy use docker and ceph rbd.
I will write if we get more info or fix that.
Thanks.
--
Have a nice day,
Timofey.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Possible tcp regression in 4.14.13..26
2018-03-13 21:41 Possible tcp regression in 4.14.13..26 Timofey Titovets
@ 2018-03-13 21:45 ` Eric Dumazet
0 siblings, 0 replies; 2+ messages in thread
From: Eric Dumazet @ 2018-03-13 21:45 UTC (permalink / raw)
To: Timofey Titovets, netdev
On 03/13/2018 02:41 PM, Timofey Titovets wrote:
> Hi list,
> We currently upgrade our servers from 4.14.13 to 4.14.26
> And get some problems with random kernel oops by:
> [ 422.081094] BUG: unable to handle kernel NULL pointer dereference
> at 0000000000000038
> [ 422.081254] IP: tcp_push+0x42/0x110
> [ 422.081314] PGD 0 P4D 0
> [ 422.081364] Oops: 0002 [#1] SMP PTI
>
> Currently we assume that this caused by:
> net: tcp: close sock if net namespace is exiting
> [ Upstream commit 4ee806d51176ba7b8ff1efd81f271d7252e03a1d ]
>
> If that can helps we heavy use docker and ceph rbd.
>
> I will write if we get more info or fix that.
>
> Thanks.
>
Can you provide a full stack trace ?
^ permalink raw reply [flat|nested] 2+ messages in thread
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