From patchwork Tue Oct 22 09:14:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geliang Tang X-Patchwork-Id: 13845399 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 9F22D2209B for ; Tue, 22 Oct 2024 09:15:35 +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=1729588535; cv=none; b=JZ3svbGf4Hcns9u7s+hvb/5ZDjZt7vs99m9WtFuJkl2Er1a6Xzz8zSyFi+HsUUQ9hWBoNkQh6VXMAhvM0it1LCllbhWBAzYb6fIPvob2nAH1X9dXFxMVd+fdBtie8MtstllOHYhTyynyJC4IuyHwwh6mHCFWB7ixwPYnm91BRUA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729588535; c=relaxed/simple; bh=YsHe0bGP/KKvztIaEHQpiyBhm7sWDCq1n15s9Sksd6Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=D9HpoEJ0IaCayIOsuQ8OrdFABJwP6ceLzSVgZkmAKejNsudw/UtjtYjQYUPeLLtEfZgnB7LT1OZ7Srh12Nbi9PrBU11zvzgRvVRGUikOw3Tm503dTeBcSVqngq0fEBieEVzhNywqh9X1sghPWnF2CQO7rzNsueahv+NafK+GBOM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=IVf7/EVQ; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="IVf7/EVQ" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CCF6C4CEC3; Tue, 22 Oct 2024 09:15:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1729588535; bh=YsHe0bGP/KKvztIaEHQpiyBhm7sWDCq1n15s9Sksd6Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=IVf7/EVQkq5NRvBfpthC6w2SefbOLpNmrfDkbTra/iBEa2GxA2IefVLcIl2ML+mck p+LSEkLHGyZnGa5PPRfJGdoVkjfI4W6ZFTQcdkLec1u1Dz4CguNPT2X2V6wxDoJ1BH LWccsjDWRKwx3mEhy2vScfWIiH1UCNzoJMby8EbMjHbmj7F1ND3zc4eMAW39WSJPgM LB7TQ7F/IlCwvCziIigT/16KQyoB5UJaw+lupkiLwlj0Dzi/Ajbf/J8f/yCdP0irZl 3d+MAuAHN6TGAbwTSE6IAWZ3gxSjFEnUw/tOTz+j5D+i6RVfme5gCZrSRxNeC2t5D0 Fx3bcZ6sWsF7w== From: Geliang Tang To: mptcp@lists.linux.dev Cc: Geliang Tang Subject: [PATCH mptcp-next v2 26/36] mptcp: hold pm lock when deleting entry Date: Tue, 22 Oct 2024 17:14:34 +0800 Message-ID: X-Mailer: git-send-email 2.45.2 In-Reply-To: References: Precedence: bulk X-Mailing-List: mptcp@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Geliang Tang When traversing userspace_pm_local_addr_list and deleting an entry from it in mptcp_pm_nl_remove_doit(), msk->pm.lock should be held. Fixes: d9a4594edabf ("mptcp: netlink: Add MPTCP_PM_CMD_REMOVE") Signed-off-by: Geliang Tang --- net/mptcp/pm_userspace.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/net/mptcp/pm_userspace.c b/net/mptcp/pm_userspace.c index 7c23f6f27626..3ad10d8062d9 100644 --- a/net/mptcp/pm_userspace.c +++ b/net/mptcp/pm_userspace.c @@ -310,14 +310,17 @@ int mptcp_pm_nl_remove_doit(struct sk_buff *skb, struct genl_info *info) lock_sock(sk); + spin_lock_bh(&msk->pm.lock); match = mptcp_userspace_pm_lookup_addr_by_id(msk, id_val); if (!match) { GENL_SET_ERR_MSG(info, "address with specified id not found"); + spin_unlock_bh(&msk->pm.lock); release_sock(sk); goto out; } list_move(&match->list, &free_list); + spin_unlock_bh(&msk->pm.lock); mptcp_pm_remove_addrs(msk, &free_list);