From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B87CDE95A67 for ; Sun, 8 Oct 2023 05:33:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344363AbjJHFd0 (ORCPT ); Sun, 8 Oct 2023 01:33:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50748 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344389AbjJHFdZ (ORCPT ); Sun, 8 Oct 2023 01:33:25 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AECA1BD for ; Sat, 7 Oct 2023 22:33:24 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E0EDBC433C8; Sun, 8 Oct 2023 05:33:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1696743204; bh=xWruFsrAftpuCoS7Eha/69NyDZufQIqA3CblYR0qPH0=; h=Subject:To:Cc:From:Date:From; b=CckUImIFbe82qwOmYHwBh0E0cX+73rYx6c39O3B9Yx9n9LehnanuDWymXOgMZmWKI vFaqwNknAfnSkk5i/kbuVj01g+/MCveBttXQ1sghgIZPOi09vifodovqpW3iYTJekr utjwXHXKExls5L7PoxKpxHw1VZKd1LWQqBY/MZ14= Subject: FAILED: patch "[PATCH] RDMA/srp: Do not call scsi_done() from srp_abort()" failed to apply to 4.19-stable tree To: bvanassche@acm.org, leon@kernel.org, rpearsonhpe@gmail.com, shinichiro.kawasaki@wdc.com Cc: From: Date: Sun, 08 Oct 2023 07:33:14 +0200 Message-ID: <2023100813-tweak-designing-9e34@gregkh> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.19-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . To reproduce the conflict and resubmit, you may use the following commands: git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-4.19.y git checkout FETCH_HEAD git cherry-pick -x e193b7955dfad68035b983a0011f4ef3590c85eb # git commit -s git send-email --to '' --in-reply-to '2023100813-tweak-designing-9e34@gregkh' --subject-prefix 'PATCH 4.19.y' HEAD^.. Possible dependencies: e193b7955dfa ("RDMA/srp: Do not call scsi_done() from srp_abort()") 5f9ae9eecb15 ("scsi: ib_srp: Call scsi_done() directly") ad215aaea4f9 ("RDMA/srp: Make struct scsi_cmnd and struct srp_request adjacent") 7ec2e27a3aff ("RDMA/srp: Fix a recently introduced memory leak") 2b5715fc1738 ("RDMA/srp: Fix support for unpopulated and unbalanced NUMA nodes") f273ad4f8d90 ("RDMA/srp: Remove support for FMR memory registration") 87fee61c3513 ("RDMA/srp: Make the channel count configurable per target") 547ed331bbe8 ("RDMA/srp: Add parse function for maximum initiator to target IU size") a163afc88556 ("IB/core: Remove ib_sg_dma_address() and ib_sg_dma_len()") 882981f4a411 ("RDMA/srp: Add support for immediate data") 513d5647116b ("RDMA/srp: Rework handling of the maximum information unit length") 4f6d498c360c ("RDMA/srp: Move srp_rdma_ch.max_ti_iu_len declaration") 482fffc43c03 ("RDMA/srp: Handle large SCSI CDBs correctly") 3023a1e93656 ("RDMA: Start use ib_device_ops") 02a42f8e40ca ("RDMA/rdmavt: Initialize ib_device_ops struct") 521ed0d92ab0 ("RDMA/core: Introduce ib_device_ops") 9af3f5cf9d64 ("RDMA/core: Validate port number in query_pkey verb") 7eebced1bae0 ("RDMA/uverbs: Simplify ib_uverbs_ex_query_device") 9a0738575f26 ("RDMA/uverbs: Use uverbs_response() for remaining response copying") 07f05f40d956 ("RDMA/uverbs: Use uverbs_attr_bundle to pass udata for ioctl()") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From e193b7955dfad68035b983a0011f4ef3590c85eb Mon Sep 17 00:00:00 2001 From: Bart Van Assche Date: Wed, 23 Aug 2023 13:57:27 -0700 Subject: [PATCH] RDMA/srp: Do not call scsi_done() from srp_abort() After scmd_eh_abort_handler() has called the SCSI LLD eh_abort_handler callback, it performs one of the following actions: * Call scsi_queue_insert(). * Call scsi_finish_command(). * Call scsi_eh_scmd_add(). Hence, SCSI abort handlers must not call scsi_done(). Otherwise all the above actions would trigger a use-after-free. Hence remove the scsi_done() call from srp_abort(). Keep the srp_free_req() call before returning SUCCESS because we may not see the command again if SUCCESS is returned. Cc: Bob Pearson Cc: Shinichiro Kawasaki Fixes: d8536670916a ("IB/srp: Avoid having aborted requests hang") Signed-off-by: Bart Van Assche Link: https://lore.kernel.org/r/20230823205727.505681-1-bvanassche@acm.org Signed-off-by: Leon Romanovsky diff --git a/drivers/infiniband/ulp/srp/ib_srp.c b/drivers/infiniband/ulp/srp/ib_srp.c index 1574218764e0..2916e77f589b 100644 --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2784,7 +2784,6 @@ static int srp_abort(struct scsi_cmnd *scmnd) u32 tag; u16 ch_idx; struct srp_rdma_ch *ch; - int ret; shost_printk(KERN_ERR, target->scsi_host, "SRP abort called\n"); @@ -2798,19 +2797,14 @@ static int srp_abort(struct scsi_cmnd *scmnd) shost_printk(KERN_ERR, target->scsi_host, "Sending SRP abort for tag %#x\n", tag); if (srp_send_tsk_mgmt(ch, tag, scmnd->device->lun, - SRP_TSK_ABORT_TASK, NULL) == 0) - ret = SUCCESS; - else if (target->rport->state == SRP_RPORT_LOST) - ret = FAST_IO_FAIL; - else - ret = FAILED; - if (ret == SUCCESS) { + SRP_TSK_ABORT_TASK, NULL) == 0) { srp_free_req(ch, req, scmnd, 0); - scmnd->result = DID_ABORT << 16; - scsi_done(scmnd); + return SUCCESS; } + if (target->rport->state == SRP_RPORT_LOST) + return FAST_IO_FAIL; - return ret; + return FAILED; } static int srp_reset_device(struct scsi_cmnd *scmnd)