From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.13]) (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 662D74B66FC for ; Thu, 3 Sep 2026 14:31:19 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=192.198.163.13 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788445885; cv=none; b=oPqqVydqlgS1WmzOZaS2FOIvI1pMm19HUHmRDwzU0LhYNrWCqJoCaiAIP8kb80RSsDjeMtDDqN/IcKbB4o1SaN8soKnax9JB11L/FWX9tgGb0ojPBJLL0pECybetwU+EI7veKlTGScTIaLLOLBF1Lmuub6VuRfdWKx0v84jqxoM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788445885; c=relaxed/simple; bh=ezox7jC2UJNC6ZNGrBn0pMaiso+SSF6/WJSYMJ+ZS7w=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Dv4vJq3dV66+U1EaxMSr7HqQlTkZTeBlOrfadU9TqdZKNvtfB6I9yMpyAHDsEbiTzYPziCHdUaTSsidknPV5Ry11u0EnDLZ+wfduswGXnILszFdDJLQ/bUyFB3vOzDwZbmygR0paQZZ4FL8ix5Aj2ewk/L0C3bwthDCDlYS55eU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com; spf=pass smtp.mailfrom=intel.com; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b=aR3/yrew; arc=none smtp.client-ip=192.198.163.13 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=intel.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=intel.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=intel.com header.i=@intel.com header.b="aR3/yrew" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1788445880; x=1819981880; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=ezox7jC2UJNC6ZNGrBn0pMaiso+SSF6/WJSYMJ+ZS7w=; b=aR3/yrewCEwLPPf12dvEV6eY0NaHMT5yReM4xwsiq9GnS5X+r/CRobFl ieiiwwTo9m++5nWhKTBb4GTnzHq4R7ANpIeeiNXIGT48BVxzmRzVbeVQj XgBmaV+ZNqgFKJqQi40yKx5JvKOfeUOr5p9PDNflOWZ5d2PMbsJwOlLWd RonHetk8FzN73IeUBzScfQqXlyOBLDMEalPch4HYdFqRamETbTPxJF2+h qdgHBQNwG6et41F5UZLsgJV9mYq1J0y3rK3vZNCOOmRJEaW+iuCp5i6vw /a1CX2UxASGpCTgVb1/c2aJujky/ZAcqYnsu8Ja44cWAXWc/IhFLghT7X w==; X-CSE-ConnectionGUID: MPGOGVTmSUC6YDWmG3d/MA== X-CSE-MsgGUID: CTA/1NAKSS+hg5Fh4iczQw== X-IronPort-AV: E=McAfee;i="6800,10657,11895"; a="91439996" X-IronPort-AV: E=Sophos;i="6.25,260,1779174000"; d="scan'208";a="91439996" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Sep 2026 07:31:01 -0700 X-CSE-ConnectionGUID: Wipviq2rS+GTD0hhMTHCbg== X-CSE-MsgGUID: 5bQpPj8YRei843wOzJr8mQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,260,1779174000"; d="scan'208";a="294617140" Received: from intel-lenovo-legion-y540-15irh-pg0.iind.intel.com ([10.224.186.95]) by fmviesa001.fm.intel.com with ESMTP; 03 Sep 2026 07:31:00 -0700 From: Kiran K To: linux-bluetooth@vger.kernel.org Cc: ravishankar.srivatsa@intel.com, chethan.tumkur.narayan@intel.com, chandrashekar.devegowda@intel.com, Kiran K Subject: [PATCH v2 2/2] Bluetooth: btintel_pcie: fix tx_handle bounds off-by-one Date: Thu, 3 Sep 2026 20:21:02 +0530 Message-ID: <20260903145102.54675-2-kiran.k@intel.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260903145102.54675-1-kiran.k@intel.com> References: <20260903145102.54675-1-kiran.k@intel.com> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Valid indices into txq->urbd0s/tfds/bufs are 0..txq->count-1, so tfd_index == txq->count is already out of range. Change the guard in btintel_pcie_msix_tx_handle() from '> txq->count' to '>= txq->count'. This issue was reported by Claude Mythos. Fixes: c2b636b3f788 ("Bluetooth: btintel_pcie: Add support for PCIe transport") Signed-off-by: Kiran K --- changes in v2: - Update commit message drivers/bluetooth/btintel_pcie.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/bluetooth/btintel_pcie.c b/drivers/bluetooth/btintel_pcie.c index 281dc5261c74..e02f8ae8d8d9 100644 --- a/drivers/bluetooth/btintel_pcie.c +++ b/drivers/bluetooth/btintel_pcie.c @@ -1423,7 +1423,7 @@ static void btintel_pcie_msix_tx_handle(struct btintel_pcie_data *data) urbd0 = &txq->urbd0s[cr_tia]; - if (urbd0->tfd_index > txq->count) + if (urbd0->tfd_index >= txq->count) return; cr_tia = (cr_tia + 1) % txq->count; -- 2.54.0