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 C14BE24DCF6; Mon, 13 Apr 2026 16:13:43 +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=1776096823; cv=none; b=BGPjjSQlfkNHsZknLab0NKjcvBy7NSyLgN9mX7zw6VF/IASPBQFgh7/qN+aQRWoyWHUshCz6VGn6Mqy1pumXjHqJAtdxB+A1fcaHT3s4gFiR2+sSFEgFKWnKpLpBM62mRlrRM+TVMUSdNvbHiG7fTYQFgYD4zUewwuLMKIXilvI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776096823; c=relaxed/simple; bh=WO1OivKVqpiLsYI4zspRVJPUBqg0Qn9oQlbXS5AnV2E=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=u3ANsuT5DpiBw2LlU7XSrGLIp1hoS2PPKtJdb1f977yeENydjOMjcrWMMZ7YxrRcvMlM7U3CV8srhOKcmaBr1Znt9AXUSV8lNGhONaO7wg8u1wyT73ldCAT7DKCY4B1o8oEIUTQi+wEGmUeaqFr/e+DBM3P3cmMFGFADy2tCPis= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HirwbYQm; 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="HirwbYQm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 568AAC2BCAF; Mon, 13 Apr 2026 16:13:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776096823; bh=WO1OivKVqpiLsYI4zspRVJPUBqg0Qn9oQlbXS5AnV2E=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=HirwbYQmTEEL4Cmyx6Ncsfoi8tB3v1yTOciYYJHT0ixN01Ul5imEKJJH/SWhLvsgg c8z0o4Bi7c3z1tEQopMNs1rK7ylb1ZJn8rTwSIlGM6N7Gvt0cCtryVCm+tb8h718w8 aihj5f216kbMVWGhEN0qW8V2LcIsd+zPambi0LXY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Ray Zhang , Emil Tantilov , Aleksandr Loktionov , Sebastian Andrzej Siewior , Samuel Salin , Tony Nguyen Subject: [PATCH 6.12 56/70] idpf: improve locking around idpf_vc_xn_push_free() Date: Mon, 13 Apr 2026 18:00:51 +0200 Message-ID: <20260413155730.276824852@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155728.181580293@linuxfoundation.org> References: <20260413155728.181580293@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Emil Tantilov commit d086fae65006368618104ba4c57779440eab2217 upstream. Protect the set_bit() operation for the free_xn bitmask in idpf_vc_xn_push_free(), to make the locking consistent with rest of the code and avoid potential races in that logic. Fixes: 34c21fa894a1 ("idpf: implement virtchnl transaction manager") Cc: stable@vger.kernel.org Reported-by: Ray Zhang Signed-off-by: Emil Tantilov Reviewed-by: Aleksandr Loktionov Acked-by: Sebastian Andrzej Siewior Tested-by: Samuel Salin Signed-off-by: Tony Nguyen Signed-off-by: Greg Kroah-Hartman --- drivers/net/ethernet/intel/idpf/idpf_virtchnl.c | 2 ++ 1 file changed, 2 insertions(+) --- a/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c +++ b/drivers/net/ethernet/intel/idpf/idpf_virtchnl.c @@ -431,7 +431,9 @@ static void idpf_vc_xn_push_free(struct struct idpf_vc_xn *xn) { idpf_vc_xn_release_bufs(xn); + spin_lock_bh(&vcxn_mngr->xn_bm_lock); set_bit(xn->idx, vcxn_mngr->free_xn_bm); + spin_unlock_bh(&vcxn_mngr->xn_bm_lock); } /**