From: "Xueming(Steven) Li" <xuemingl@mellanox.com>
To: David Marchand <david.marchand@redhat.com>,
Anatoly Burakov <anatoly.burakov@intel.com>
Cc: Asaf Penso <asafp@mellanox.com>, dev <dev@dpdk.org>,
dpdk stable <stable@dpdk.org>
Subject: Re: [dpdk-stable] [PATCH 2/2] malloc: fix realloc padded element size
Date: Wed, 20 Nov 2019 02:12:03 +0000 [thread overview]
Message-ID: <DB6PR05MB3190CF0963833ECFF7069D02AC4F0@DB6PR05MB3190.eurprd05.prod.outlook.com> (raw)
In-Reply-To: <CAJFAV8xieOuFRQpBQhOERUqS7372774H=qk9eO4iy86ku79fpQ@mail.gmail.com>
> -----Original Message-----
> From: David Marchand <david.marchand@redhat.com>
> Sent: Wednesday, November 20, 2019 4:47 AM
> To: Xueming(Steven) Li <xuemingl@mellanox.com>; Anatoly Burakov
> <anatoly.burakov@intel.com>
> Cc: Asaf Penso <asafp@mellanox.com>; dev <dev@dpdk.org>; dpdk stable
> <stable@dpdk.org>
> Subject: Re: [dpdk-stable] [PATCH 2/2] malloc: fix realloc padded element
> size
>
> On Tue, Nov 12, 2019 at 3:50 PM Xueming Li <xuemingl@mellanox.com>
> wrote:
> >
> > When resize a memory with next element, the original element size grows.
> > If the orginal element has padding, the real inner element size didn't
> > grow as well and this causes trailer verification failure when malloc
> > debug enabled.
>
> I did not see this when running the malloc_autotest with debug enabled.
> What is missing for me to catch it?
>
Yes, it happens rarely, depends on memory fragment. I only caught this in middle of a long test.
>
> Just a bit chilly to apply this series.
> The first patch seems an optimisation.
> The second one seems more interesting if we fix the debug mode, but I
> suppose we can live without them in 19.11.
Few people enable memory debug option, they are there for years.
>
>
> --
> David Marchand
next prev parent reply other threads:[~2019-11-20 2:12 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-12 14:50 [dpdk-stable] [PATCH 1/2] malloc: fix realloc wrong copy size Xueming Li
2019-11-12 14:50 ` [dpdk-stable] [PATCH 2/2] malloc: fix realloc padded element size Xueming Li
2019-11-14 15:11 ` Burakov, Anatoly
2019-11-19 20:47 ` David Marchand
2019-11-20 2:12 ` Xueming(Steven) Li [this message]
2019-11-20 13:25 ` David Marchand
2019-11-21 12:30 ` Burakov, Anatoly
2019-11-21 12:55 ` Xueming(Steven) Li
2019-11-21 13:15 ` Burakov, Anatoly
2019-11-21 13:17 ` [dpdk-stable] [dpdk-dev] " Burakov, Anatoly
2019-11-21 14:11 ` Xueming(Steven) Li
2019-11-14 15:11 ` [dpdk-stable] [PATCH 1/2] malloc: fix realloc wrong copy size Burakov, Anatoly
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