From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 664322EB874; Wed, 9 Sep 2026 14:29:16 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788964157; cv=none; b=IRSnsNf3n3PZEviRkjM1a2v1m2UD2GQtjAeAc68FThyHtaj139RiKjVjvMGY7IDjJIFZ66y8ab+dUSrwcFDbWR8gb7A8++MsjWrXPLi0hlyUz5YQOMnMQFeIrKCuQgCd+umfYUWSZPsd7jNOhq3qU14qTbQ6QuANJK4NkcfGU5M= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788964157; c=relaxed/simple; bh=8W4g2NGh7kqQed7yrISWC7PUu0gZF1SD018QuhOxiK8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=AhtWPaNgUrg+0g64t5+Hmclg4tz6yAmWPjpmJVb4hDadLvR59iG6jmOmvBZB24P+o+reFsd4eps4ibSJKKbvQmrDGrtbwbBH/iI+vs006Wt/YkwaHSLYS6UsqGn2Dq3SmrgDxPpFGQR1aKzWNj9qKy2o7U7ydNpVd9KuFXUI3xQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=W4LE80K4; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="W4LE80K4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEDA31F00A3A; Wed, 9 Sep 2026 14:29:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788964156; bh=XO2D/XcEyueroxBKy14busHTql9CgIlAZYnUfijprfw=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=W4LE80K41a79L2HD82msj/RoEglrBywDytd/PTWx8THHnJtXL73RMsJiqA3b85LPu SJnUm5NK9KdowQsnownAePVJ04dFTPHtAMJ3EIoLfxkEW2bHzQ7QYnyf/ee5d+c1hA h2EMiu/Qwgm5fp71DNDetugwgUijc+DFXArmhH1c= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Nilesh Javali , Hannes Reinecke , "Martin K. Petersen (Oracle)" Subject: [PATCH 6.18 327/583] scsi: qla2xxx: Hold vport reference in qla24xx_report_id_acquisition() Date: Wed, 9 Sep 2026 15:40:12 +0200 Message-ID: <20260909134249.323124629@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260909134237.773280130@linuxfoundation.org> References: <20260909134237.773280130@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 6.18-stable review patch. If anyone has any objections, please let me know. ------------------ From: Nilesh Javali commit 793cedee296fd819bfadc2a7ec4d52faf9c09a0a upstream. In the format 1 path, the virtual port is located on ha->vp_list while holding vport_slock, but the lock is dropped before vp is used: qla_update_host_map() is called and VP_IDX_ACQUIRED/REGISTER_FC4_NEEDED/ REGISTER_FDMI_NEEDED are set on vp. No reference is taken across that window, so a concurrent qla24xx_deallocate_vp_id() can tear the vport down and free it, leading to a use-after-free. Take a vport reference (vref_count) under vport_slock when the matching vp is found, and drop it after the last use of vp. qla24xx_deallocate_vp_id() waits for vref_count to reach zero before unlinking and freeing the vport, so the pointer stays valid. This matches the reference idiom already used by the other ha->vp_list traversals. Fixes: 2c3dfe3f6ad8 ("[SCSI] qla2xxx: add support for NPIV") Cc: stable@vger.kernel.org Signed-off-by: Nilesh Javali Reviewed-by: Hannes Reinecke Link: https://patch.msgid.link/20260723050413.3897522-51-njavali@marvell.com Signed-off-by: Martin K. Petersen (Oracle) Signed-off-by: Greg Kroah-Hartman --- drivers/scsi/qla2xxx/qla_mbx.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/scsi/qla2xxx/qla_mbx.c +++ b/drivers/scsi/qla2xxx/qla_mbx.c @@ -4146,6 +4146,7 @@ qla24xx_report_id_acquisition(scsi_qla_h list_for_each_entry(vp, &ha->vp_list, list) { if (rptid_entry->vp_idx == vp->vp_idx) { found = 1; + atomic_inc(&vp->vref_count); break; } } @@ -4163,6 +4164,8 @@ qla24xx_report_id_acquisition(scsi_qla_h set_bit(VP_IDX_ACQUIRED, &vp->vp_flags); set_bit(REGISTER_FC4_NEEDED, &vp->dpc_flags); set_bit(REGISTER_FDMI_NEEDED, &vp->dpc_flags); + + atomic_dec(&vp->vref_count); } set_bit(VP_DPC_NEEDED, &vha->dpc_flags); qla2xxx_wake_dpc(vha);