From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:35636 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732607AbeJBUSp (ORCPT ); Tue, 2 Oct 2018 16:18:45 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Bart Van Assche , Jason Gunthorpe Subject: [PATCH 4.14 104/137] IB/srp: Avoid that sg_reset -d ${srp_device} triggers an infinite loop Date: Tue, 2 Oct 2018 06:25:05 -0700 Message-Id: <20181002132505.764331834@linuxfoundation.org> In-Reply-To: <20181002132458.446916963@linuxfoundation.org> References: <20181002132458.446916963@linuxfoundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: 4.14-stable review patch. If anyone has any objections, please let me know. ------------------ From: Bart Van Assche commit ee92efe41cf358f4b99e73509f2bfd4733609f26 upstream. Use different loop variables for the inner and outer loop. This avoids that an infinite loop occurs if there are more RDMA channels than target->req_ring_size. Fixes: d92c0da71a35 ("IB/srp: Add multichannel support") Cc: Signed-off-by: Bart Van Assche Signed-off-by: Jason Gunthorpe Signed-off-by: Greg Kroah-Hartman --- drivers/infiniband/ulp/srp/ib_srp.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/drivers/infiniband/ulp/srp/ib_srp.c +++ b/drivers/infiniband/ulp/srp/ib_srp.c @@ -2669,7 +2669,7 @@ static int srp_reset_device(struct scsi_ { struct srp_target_port *target = host_to_target(scmnd->device->host); struct srp_rdma_ch *ch; - int i; + int i, j; u8 status; shost_printk(KERN_ERR, target->scsi_host, "SRP reset_device called\n"); @@ -2683,8 +2683,8 @@ static int srp_reset_device(struct scsi_ for (i = 0; i < target->ch_count; i++) { ch = &target->ch[i]; - for (i = 0; i < target->req_ring_size; ++i) { - struct srp_request *req = &ch->req_ring[i]; + for (j = 0; j < target->req_ring_size; ++j) { + struct srp_request *req = &ch->req_ring[j]; srp_finish_req(ch, req, scmnd->device, DID_RESET << 16); }