From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id ABF703C1975; Thu, 15 Jan 2026 17:14:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768497278; cv=none; b=apAQTf8Db6XxdMpOf1kIuuJotjZxtymjuNihHktv3r7g8Mq0Z2LwqGC1Oc1BfFGr3wtQCUzapKp/3BAJjPSG8kiU9yWGTA0pl46DTRLxnYrgjzgCq98cLGyK4+Ym7+SXZ7bFTNrWiz8jZvtS0DHULoTkKONeeL8Wa33Y+6X4ZjM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1768497278; c=relaxed/simple; bh=to1yH375AdJSAp1TxFsCvsg+kKwhL7YZkSW2lEXQxWw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fkg20C/iBKK8DKLyhtzJWvVTRLPCj8YZYhtWbKZmZho+mBjxVR0d3jVPlkxkmMVHFm2NsvSgSl5ZPp73dyqe7GnqhqsKSWRkkPHhXDnC2byMsS2A1xN95xvUJ9o51/QH3GxORbQ+tdKMM8MPGS39rDNce0bl0YAdJ9WjEX1dldE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=F84yOt7l; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="F84yOt7l" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1E24C116D0; Thu, 15 Jan 2026 17:14:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1768497278; bh=to1yH375AdJSAp1TxFsCvsg+kKwhL7YZkSW2lEXQxWw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=F84yOt7lOcjsmUM2p7wRvAOvKGjOF1xGJsQwqXbcH3oCMtSbOrGrrsp7EIPAPhnAX qIEk35ml4IWYdMA0OczRHWsgCmCsaHfa/y+gHe/2e6BrBirYP/KkbxC+Ytum0h/wwn nJALbH5JK4nHcGsAuAcRgHWiEwPfTJahzHp4Q1y0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, syzbot+6641a61fe0e2e89ae8c5@syzkaller.appspotmail.com, Sabrina Dubroca , Simon Horman , Steffen Klassert , Sasha Levin Subject: [PATCH 5.15 004/554] xfrm: flush all states in xfrm_state_fini Date: Thu, 15 Jan 2026 17:41:10 +0100 Message-ID: <20260115164246.395112340@linuxfoundation.org> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260115164246.225995385@linuxfoundation.org> References: <20260115164246.225995385@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Sabrina Dubroca [ Upstream commit 42e42562c9cfcdacf000f1b42284a4fad24f8546 ] While reverting commit f75a2804da39 ("xfrm: destroy xfrm_state synchronously on net exit path"), I incorrectly changed xfrm_state_flush's "proto" argument back to IPSEC_PROTO_ANY. This reverts some of the changes in commit dbb2483b2a46 ("xfrm: clean up xfrm protocol checks"), and leads to some states not being removed when we exit the netns. Pass 0 instead of IPSEC_PROTO_ANY from both xfrm_state_fini xfrm6_tunnel_net_exit, so that xfrm_state_flush deletes all states. Fixes: 2a198bbec691 ("Revert "xfrm: destroy xfrm_state synchronously on net exit path"") Reported-by: syzbot+6641a61fe0e2e89ae8c5@syzkaller.appspotmail.com Closes: https://syzkaller.appspot.com/bug?extid=6641a61fe0e2e89ae8c5 Tested-by: syzbot+6641a61fe0e2e89ae8c5@syzkaller.appspotmail.com Signed-off-by: Sabrina Dubroca Reviewed-by: Simon Horman Signed-off-by: Steffen Klassert Signed-off-by: Sasha Levin --- net/ipv6/xfrm6_tunnel.c | 2 +- net/xfrm/xfrm_state.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c index 3d811248f3129..a3e6860406fcb 100644 --- a/net/ipv6/xfrm6_tunnel.c +++ b/net/ipv6/xfrm6_tunnel.c @@ -330,7 +330,7 @@ static void __net_exit xfrm6_tunnel_net_exit(struct net *net) struct xfrm6_tunnel_net *xfrm6_tn = xfrm6_tunnel_pernet(net); unsigned int i; - xfrm_state_flush(net, IPSEC_PROTO_ANY, false); + xfrm_state_flush(net, 0, false); xfrm_flush_gc(); for (i = 0; i < XFRM6_TUNNEL_SPI_BYADDR_HSIZE; i++) diff --git a/net/xfrm/xfrm_state.c b/net/xfrm/xfrm_state.c index 8287dc73e839d..54ae99f69f25f 100644 --- a/net/xfrm/xfrm_state.c +++ b/net/xfrm/xfrm_state.c @@ -2741,7 +2741,7 @@ void xfrm_state_fini(struct net *net) unsigned int sz; flush_work(&net->xfrm.state_hash_work); - xfrm_state_flush(net, IPSEC_PROTO_ANY, false); + xfrm_state_flush(net, 0, false); flush_work(&xfrm_state_gc_work); WARN_ON(!list_empty(&net->xfrm.state_all)); -- 2.51.0