From: Jakub Kicinski <kuba@kernel.org>
To: Davide Caratti <dcaratti@redhat.com>
Cc: Jamal Hadi Salim <jhs@mojatatu.com>,
Rajat Gupta <rajat.gupta@oss.qualcomm.com>,
netdev@vger.kernel.org, davem@davemloft.net, edumazet@google.com,
pabeni@redhat.com, horms@kernel.org, jiri@resnulli.us,
yimingqian591@gmail.com, keenanat2000@gmail.com,
2045gemini@gmail.com, rollkingzzc@gmail.com
Subject: Re: [PATCH net] net/sched: fix pedit partial COW leading to page cache corruption
Date: Thu, 21 May 2026 08:56:02 -0700 [thread overview]
Message-ID: <20260521085602.1a7d7ef0@kernel.org> (raw)
In-Reply-To: <CAKa-r6soz=iMBiYG0Grhhc12yhdw9vMNV+XjjEPCmtgKK6+rhA@mail.gmail.com>
On Thu, 21 May 2026 17:51:25 +0200 Davide Caratti wrote:
> > Do you know of anyone modifying payloads with pedit?
>
> yes: MPTCP kselftest does that on purpose, to mimic a middlebox and trigger
> DSS checksum failures [1]
As I said in another reply (looks like the ML is having a significant
lag this morning :() - we would still support it, the shared frag
tracking is just an optimization to avoid a copy. And maintaining that
optimization for an occasional CI test is not the right eng tradeoff.
next prev parent reply other threads:[~2026-05-21 15:56 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-05-18 1:30 [PATCH net] net/sched: fix pedit partial COW leading to page cache Rajat Gupta
2026-05-18 13:10 ` Han Guidong
2026-05-18 13:31 ` Jamal Hadi Salim
2026-05-19 3:39 ` [PATCH net] net/sched: fix pedit partial COW leading to page cache corruption Rajat Gupta
2026-05-19 11:18 ` Toke Høiland-Jørgensen
2026-05-19 15:10 ` Han Guidong
2026-05-20 9:12 ` Jamal Hadi Salim
2026-05-20 10:04 ` Han Guidong
2026-05-20 10:36 ` Han Guidong
2026-05-20 11:40 ` Jamal Hadi Salim
2026-05-20 9:23 ` Jamal Hadi Salim
2026-05-20 20:00 ` Jamal Hadi Salim
2026-05-21 9:53 ` Jamal Hadi Salim
2026-05-21 10:15 ` Jamal Hadi Salim
2026-05-21 14:35 ` Jakub Kicinski
2026-05-21 15:16 ` Jamal Hadi Salim
2026-05-21 15:46 ` Jakub Kicinski
2026-05-22 11:47 ` Jamal Hadi Salim
2026-05-22 15:46 ` Jakub Kicinski
2026-05-22 16:37 ` Jamal Hadi Salim
2026-05-22 17:01 ` Jamal Hadi Salim
[not found] ` <CAKa-r6soz=iMBiYG0Grhhc12yhdw9vMNV+XjjEPCmtgKK6+rhA@mail.gmail.com>
2026-05-21 15:56 ` Jakub Kicinski [this message]
2026-05-22 11:49 ` Jamal Hadi Salim
2026-05-22 12:00 ` Toke Høiland-Jørgensen
2026-05-22 14:49 ` Davide Caratti
2026-05-22 7:49 ` Han Guidong
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