From: Florian Westphal <fw@strlen.de>
To: Sabrina Dubroca <sd@queasysnail.net>
Cc: netdev@vger.kernel.org,
Steffen Klassert <steffen.klassert@secunet.com>,
Antony Antony <antony.antony@secunet.com>,
Tobias Brunner <tobias@strongswan.org>
Subject: Re: [PATCH ipsec 2/2] xfrm: state: use a consistent pcpu_id in xfrm_state_find
Date: Fri, 23 May 2025 20:12:38 +0200 [thread overview]
Message-ID: <aDC6lpnfvhWoeM-C@strlen.de> (raw)
In-Reply-To: <6d0dd032450372755c629a68e6999c3b317c0188.1748001837.git.sd@queasysnail.net>
Sabrina Dubroca <sd@queasysnail.net> wrote:
> If we get preempted during xfrm_state_find, we could run
> xfrm_state_look_at using a different pcpu_id than the one
> xfrm_state_find saw.
[..]
> This can be avoided by passing the original pcpu_id down to all
> xfrm_state_look_at() calls.
FWIW I found this get/put pair slightly confusing as well, so:
Reviewed-by: Florian Westphal <fw@strlen.de>
next prev parent reply other threads:[~2025-05-23 18:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-05-23 15:11 [PATCH ipsec 0/2] xfrm: fixes for xfrm_state_find under preemption Sabrina Dubroca
2025-05-23 15:11 ` [PATCH ipsec 1/2] xfrm: state: initialize state_ptrs earlier in xfrm_state_find Sabrina Dubroca
2025-05-23 18:05 ` Florian Westphal
2025-05-23 15:11 ` [PATCH ipsec 2/2] xfrm: state: use a consistent pcpu_id " Sabrina Dubroca
2025-05-23 18:12 ` Florian Westphal [this message]
2025-05-26 6:28 ` Steffen Klassert
2025-05-26 13:57 ` Florian Westphal
2025-05-26 12:17 ` Steffen Klassert
2025-06-10 7:55 ` [PATCH ipsec 0/2] xfrm: fixes for xfrm_state_find under preemption Steffen Klassert
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