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 262E628F4 for ; Sun, 20 Oct 2024 09:31:31 +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=1729416691; cv=none; b=JR6IuEwofU6kBslEX+67w1v5lq+2iy9Dh5nJ0OR4f+QemutEpDVX+phYUIMTEONh5YNROpYU2dACzkcAJn5CUfGTXX4FRyBNuxvH3jfz3iDANAee29OPYmuQTlVWV5Tjba8oxH4DEbInHgb1bs2JOt57GF19LVGxQjrgaDUM3Fk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1729416691; c=relaxed/simple; bh=SS2VMdhbaMJmerJ7Yp3E7l22YF4xY80WQ69B4piBbXk=; h=Subject:To:Cc:From:Date:Message-ID:MIME-Version:Content-Type; b=YVA9zQ7g9+38JElOGK0MkD/P8+ghg3zLfA/tH7tWiARhvz16cFudHvIAwON5KUFWDWIugIOg4sZELfCUG/TQIBgaQDbwlaXfIbYzgetabX/NpBBWD5fBPmIhUoU8caj/mKuNpuoj/gnhWJqAIPIZl62v+rmin0HBbqTQZjSSG4o= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=hehwqfZf; 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="hehwqfZf" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9CA77C4CEC6; Sun, 20 Oct 2024 09:31:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1729416691; bh=SS2VMdhbaMJmerJ7Yp3E7l22YF4xY80WQ69B4piBbXk=; h=Subject:To:Cc:From:Date:From; b=hehwqfZf7LeLf22N0tHtbTlbfmpPBwN7RcCb5etSg+5nsIYPwJw6fWPmgD5B+fXGo hRoLKarSF9Gt/pZmLlmOV0zMyY4naoQ4iRfx+vUogx1yYHnb8dp0c0bZ9GQsZG/StB YJt17FdUOqPRngOy1G5pWIuFA1lALYqGKj/EhKNo= Subject: FAILED: patch "[PATCH] scsi: mpi3mr: Validate SAS port assignments" failed to apply to 6.6-stable tree To: ranjan.kumar@broadcom.com,lkp@intel.com,martin.petersen@oracle.com,mav@ixsystems.com Cc: From: Date: Sun, 20 Oct 2024 11:31:27 +0200 Message-ID: <2024102027-late-goggles-8ae6@gregkh> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit The patch below does not apply to the 6.6-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-6.6.y git checkout FETCH_HEAD git cherry-pick -x b9e63d6c7c0e94a99e1af7c9c0c7fad13a2f2453 # git commit -s git send-email --to '' --in-reply-to '2024102027-late-goggles-8ae6@gregkh' --subject-prefix 'PATCH 6.6.y' HEAD^.. Possible dependencies: thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From b9e63d6c7c0e94a99e1af7c9c0c7fad13a2f2453 Mon Sep 17 00:00:00 2001 From: Ranjan Kumar Date: Tue, 8 Oct 2024 13:13:53 +0530 Subject: [PATCH] scsi: mpi3mr: Validate SAS port assignments A sanity check on phy_mask was added in commit 3668651def2c ("scsi: mpi3mr: Sanitise num_phys"). This causes warning messages when more than 64 phys are detected and devices connected to phys greater than 64 are dropped. The phy_mask bitmap is only needed for controller phys and not required for expander phys. Controller phys can go up to a maximum of 64 and therefore u64 is good enough to contain phy_mask bitmap. To suppress those warnings and allow devices to be discovered as before the offending commit, restrict the phy_mask setting and lowest phy setting only to the controller phys. Fixes: 3668651def2c ("scsi: mpi3mr: Sanitise num_phys") Cc: stable@vger.kernel.org Reported-by: kernel test robot Closes: https://lore.kernel.org/oe-kbuild-all/202410051943.Mp9o5DlF-lkp@intel.com/ Reported-by: Alexander Motin Signed-off-by: Ranjan Kumar Link: https://lore.kernel.org/r/20241008074353.200379-1-ranjan.kumar@broadcom.com Signed-off-by: Martin K. Petersen diff --git a/drivers/scsi/mpi3mr/mpi3mr.h b/drivers/scsi/mpi3mr/mpi3mr.h index fcb0fa31536b..16e0baeb8799 100644 --- a/drivers/scsi/mpi3mr/mpi3mr.h +++ b/drivers/scsi/mpi3mr/mpi3mr.h @@ -542,8 +542,8 @@ struct mpi3mr_hba_port { * @port_list: List of ports belonging to a SAS node * @num_phys: Number of phys associated with port * @marked_responding: used while refresing the sas ports - * @lowest_phy: lowest phy ID of current sas port - * @phy_mask: phy_mask of current sas port + * @lowest_phy: lowest phy ID of current sas port, valid for controller port + * @phy_mask: phy_mask of current sas port, valid for controller port * @hba_port: HBA port entry * @remote_identify: Attached device identification * @rphy: SAS transport layer rphy object diff --git a/drivers/scsi/mpi3mr/mpi3mr_transport.c b/drivers/scsi/mpi3mr/mpi3mr_transport.c index ccd23def2e0c..0ba9e6a6a13c 100644 --- a/drivers/scsi/mpi3mr/mpi3mr_transport.c +++ b/drivers/scsi/mpi3mr/mpi3mr_transport.c @@ -590,12 +590,13 @@ static enum sas_linkrate mpi3mr_convert_phy_link_rate(u8 link_rate) * @mrioc: Adapter instance reference * @mr_sas_port: Internal Port object * @mr_sas_phy: Internal Phy object + * @host_node: Flag to indicate this is a host_node * * Return: None. */ static void mpi3mr_delete_sas_phy(struct mpi3mr_ioc *mrioc, struct mpi3mr_sas_port *mr_sas_port, - struct mpi3mr_sas_phy *mr_sas_phy) + struct mpi3mr_sas_phy *mr_sas_phy, u8 host_node) { u64 sas_address = mr_sas_port->remote_identify.sas_address; @@ -605,9 +606,13 @@ static void mpi3mr_delete_sas_phy(struct mpi3mr_ioc *mrioc, list_del(&mr_sas_phy->port_siblings); mr_sas_port->num_phys--; - mr_sas_port->phy_mask &= ~(1 << mr_sas_phy->phy_id); - if (mr_sas_port->lowest_phy == mr_sas_phy->phy_id) - mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; + + if (host_node) { + mr_sas_port->phy_mask &= ~(1 << mr_sas_phy->phy_id); + + if (mr_sas_port->lowest_phy == mr_sas_phy->phy_id) + mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; + } sas_port_delete_phy(mr_sas_port->port, mr_sas_phy->phy); mr_sas_phy->phy_belongs_to_port = 0; } @@ -617,12 +622,13 @@ static void mpi3mr_delete_sas_phy(struct mpi3mr_ioc *mrioc, * @mrioc: Adapter instance reference * @mr_sas_port: Internal Port object * @mr_sas_phy: Internal Phy object + * @host_node: Flag to indicate this is a host_node * * Return: None. */ static void mpi3mr_add_sas_phy(struct mpi3mr_ioc *mrioc, struct mpi3mr_sas_port *mr_sas_port, - struct mpi3mr_sas_phy *mr_sas_phy) + struct mpi3mr_sas_phy *mr_sas_phy, u8 host_node) { u64 sas_address = mr_sas_port->remote_identify.sas_address; @@ -632,9 +638,12 @@ static void mpi3mr_add_sas_phy(struct mpi3mr_ioc *mrioc, list_add_tail(&mr_sas_phy->port_siblings, &mr_sas_port->phy_list); mr_sas_port->num_phys++; - mr_sas_port->phy_mask |= (1 << mr_sas_phy->phy_id); - if (mr_sas_phy->phy_id < mr_sas_port->lowest_phy) - mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; + if (host_node) { + mr_sas_port->phy_mask |= (1 << mr_sas_phy->phy_id); + + if (mr_sas_phy->phy_id < mr_sas_port->lowest_phy) + mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; + } sas_port_add_phy(mr_sas_port->port, mr_sas_phy->phy); mr_sas_phy->phy_belongs_to_port = 1; } @@ -675,7 +684,7 @@ static void mpi3mr_add_phy_to_an_existing_port(struct mpi3mr_ioc *mrioc, if (srch_phy == mr_sas_phy) return; } - mpi3mr_add_sas_phy(mrioc, mr_sas_port, mr_sas_phy); + mpi3mr_add_sas_phy(mrioc, mr_sas_port, mr_sas_phy, mr_sas_node->host_node); return; } } @@ -736,7 +745,7 @@ static void mpi3mr_del_phy_from_an_existing_port(struct mpi3mr_ioc *mrioc, mpi3mr_delete_sas_port(mrioc, mr_sas_port); else mpi3mr_delete_sas_phy(mrioc, mr_sas_port, - mr_sas_phy); + mr_sas_phy, mr_sas_node->host_node); return; } } @@ -1028,7 +1037,7 @@ mpi3mr_alloc_hba_port(struct mpi3mr_ioc *mrioc, u16 port_id) /** * mpi3mr_get_hba_port_by_id - find hba port by id * @mrioc: Adapter instance reference - * @port_id - Port ID to search + * @port_id: Port ID to search * * Return: mpi3mr_hba_port reference for the matched port */ @@ -1367,7 +1376,8 @@ static struct mpi3mr_sas_port *mpi3mr_sas_port_add(struct mpi3mr_ioc *mrioc, mpi3mr_sas_port_sanity_check(mrioc, mr_sas_node, mr_sas_port->remote_identify.sas_address, hba_port); - if (mr_sas_node->num_phys >= sizeof(mr_sas_port->phy_mask) * 8) + if (mr_sas_node->host_node && mr_sas_node->num_phys >= + sizeof(mr_sas_port->phy_mask) * 8) ioc_info(mrioc, "max port count %u could be too high\n", mr_sas_node->num_phys); @@ -1377,7 +1387,7 @@ static struct mpi3mr_sas_port *mpi3mr_sas_port_add(struct mpi3mr_ioc *mrioc, (mr_sas_node->phy[i].hba_port != hba_port)) continue; - if (i >= sizeof(mr_sas_port->phy_mask) * 8) { + if (mr_sas_node->host_node && (i >= sizeof(mr_sas_port->phy_mask) * 8)) { ioc_warn(mrioc, "skipping port %u, max allowed value is %zu\n", i, sizeof(mr_sas_port->phy_mask) * 8); goto out_fail; @@ -1385,7 +1395,8 @@ static struct mpi3mr_sas_port *mpi3mr_sas_port_add(struct mpi3mr_ioc *mrioc, list_add_tail(&mr_sas_node->phy[i].port_siblings, &mr_sas_port->phy_list); mr_sas_port->num_phys++; - mr_sas_port->phy_mask |= (1 << i); + if (mr_sas_node->host_node) + mr_sas_port->phy_mask |= (1 << i); } if (!mr_sas_port->num_phys) { @@ -1394,7 +1405,8 @@ static struct mpi3mr_sas_port *mpi3mr_sas_port_add(struct mpi3mr_ioc *mrioc, goto out_fail; } - mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; + if (mr_sas_node->host_node) + mr_sas_port->lowest_phy = ffs(mr_sas_port->phy_mask) - 1; if (mr_sas_port->remote_identify.device_type == SAS_END_DEVICE) { tgtdev = mpi3mr_get_tgtdev_by_addr(mrioc,