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From: Slava Ovsiienko <viacheslavo@nvidia.com>
To: Gregory Etelson <getelson@nvidia.com>, "dev@dpdk.org" <dev@dpdk.org>
CC: Matan Azrad <matan@nvidia.com>, Raslan Darawsheh <rasland@nvidia.com>,
Shahaf Shuler <shahafs@nvidia.com>, "Xueming(Steven) Li"
<xuemingl@nvidia.com>
Thread-Topic: [PATCH 3/4] net/mlx5: fix PMD crash after tunnel offload match
rule destruction
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Date: Wed, 11 Nov 2020 08:51:33 +0000
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Subject: Re: [dpdk-dev] [PATCH 3/4] net/mlx5: fix PMD crash after tunnel
offload match rule destruction
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Sender: "dev" <dev-bounces@dpdk.org>
> -----Original Message-----
> From: Gregory Etelson <getelson@nvidia.com>
> Sent: Wednesday, November 11, 2020 9:14
> To: dev@dpdk.org
> Cc: Gregory Etelson <getelson@nvidia.com>; Matan Azrad
> <matan@nvidia.com>; Raslan Darawsheh <rasland@nvidia.com>; Shahaf
> Shuler <shahafs@nvidia.com>; Slava Ovsiienko <viacheslavo@nvidia.com>;
> Xueming(Steven) Li <xuemingl@nvidia.com>
> Subject: [PATCH 3/4] net/mlx5: fix PMD crash after tunnel offload match r=
ule
> destruction
>=20
> The new flow table resource management API triggered a PMD crash in tunne=
l
> offload mode, when tunnel match flow rule was inserted before tunnel set
> rule.
>=20
> Reason for the crash was double flow table registration. The table was
> registered by the tunnel offload code for the first time and once more by=
PMD
> code, as part of general table processing. The table counter was decremen=
ted
> only once during the rule destruction and caused a resource leak that tri=
ggered
> the crash.
>=20
> The patch updates PMD registration with tunnel offload parameters and
> removes table registration in tunnel related code.
>=20
> Fixes: 663ad57dabb2 ("net/mlx5: make flow table cache thread safe")
>=20
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
Acked-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>