From: Eric Dumazet <eric.dumazet@gmail.com>
To: Guillaume Nault <gnault@redhat.com>,
David Miller <davem@davemloft.net>,
Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: netdev@vger.kernel.org, Eric Dumazet <edumazet@google.com>,
Arnd Bergmann <arnd@arndb.de>,
John Stultz <john.stultz@linaro.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: Re: [PATCH net v4 1/3] tcp: fix rejected syncookies due to stale timestamps
Date: Fri, 6 Dec 2019 17:49:51 -0800 [thread overview]
Message-ID: <3eaa158d-32e6-d541-d0fc-d1b79738f84f@gmail.com> (raw)
In-Reply-To: <b1e80e43ba300a37ac5ea70088769fbe8ac5bf01.1575631229.git.gnault@redhat.com>
On 12/6/19 3:38 AM, Guillaume Nault wrote:
> If no synflood happens for a long enough period of time, then the
> synflood timestamp isn't refreshed and jiffies can advance so much
> that time_after32() can't accurately compare them any more.
...
>
> Fixes: cca9bab1b72c ("tcp: use monotonic timestamps for PAWS")
> Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
> Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
next prev parent reply other threads:[~2019-12-07 1:49 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-06 11:38 [PATCH net v4 0/3] tcp: fix handling of stale syncookies timestamps Guillaume Nault
2019-12-06 11:38 ` [PATCH net v4 1/3] tcp: fix rejected syncookies due to stale timestamps Guillaume Nault
2019-12-07 1:49 ` Eric Dumazet [this message]
2019-12-06 11:38 ` [PATCH net v4 2/3] tcp: tighten acceptance of ACKs not matching a child socket Guillaume Nault
2019-12-06 11:38 ` [PATCH net v4 3/3] tcp: Protect accesses to .ts_recent_stamp with {READ,WRITE}_ONCE() Guillaume Nault
2019-12-07 5:06 ` [PATCH net v4 0/3] tcp: fix handling of stale syncookies timestamps David Miller
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