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 343F324DCF6; Mon, 13 Apr 2026 16:05:44 +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=1776096344; cv=none; b=nR/d5BQs5zSrh63R+JBhU07IYRJLe9JyysfdtrQZ6aQHKKRI4yD7FIYY40EeXzombqzhQslYELaTsUBoTakOgblmZ8R6VuBAd+kobNhP43sY3W1hAZewwFvGqaMbFNRzVtRVpqYVveMbo6huR5p1XHS6yMgwdbwTK3wRRKvIWCc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1776096344; c=relaxed/simple; bh=BUjDVny4N5nfXZJwZiY7/g1kGxUMEDMH/jqnE6ECPx8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Piqwyvp4svlcgq/gngsb7DQt2elkR/PFnXZUVj4yfeW8YAhs8iWGa/NezulNbYr6r6I9uqc2LOdslJxy4trLdcA8HcJT1Gvnj5ORWxrFGtEt0tazkNbDEiRsRWvUHAqSw5A10mVyspIiKGG1jW9bqAY6GH4P1QKwgV6ImhcWAIo= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=mXAl/5H/; 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="mXAl/5H/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B50B5C2BCAF; Mon, 13 Apr 2026 16:05:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1776096344; bh=BUjDVny4N5nfXZJwZiY7/g1kGxUMEDMH/jqnE6ECPx8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mXAl/5H/J8lgiQHP4nzY7BpYI59diAPxGXEgkv1BGT1YegrP8WIO1XRQCzNYeDB/T mNz3jt/U5ty/rpuc8Y58mEjx/kjns19S+YlpeXixaydjRubXuw1ORG0pm6dbXuUQkB vVi45HLZ2jG01fXzMXzA2CgqIhk+6zAk+q6FgAHE= 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 6.19 60/86] idpf: improve locking around idpf_vc_xn_push_free() Date: Mon, 13 Apr 2026 18:00:07 +0200 Message-ID: <20260413155733.803128712@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260413155731.568515178@linuxfoundation.org> References: <20260413155731.568515178@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 6.19-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 @@ -399,7 +399,9 @@ 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); } /**