From owner-svn-src-all@freebsd.org Wed Feb 13 16:02:53 2019 Return-Path: Delivered-To: svn-src-all@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 3F67614CFEB4; Wed, 13 Feb 2019 16:02:53 +0000 (UTC) (envelope-from marius@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id D063669EB8; Wed, 13 Feb 2019 16:02:52 +0000 (UTC) (envelope-from marius@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id BC90E297E3; Wed, 13 Feb 2019 16:02:52 +0000 (UTC) (envelope-from marius@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x1DG2qc7088555; Wed, 13 Feb 2019 16:02:52 GMT (envelope-from marius@FreeBSD.org) Received: (from marius@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x1DG2qo0088554; Wed, 13 Feb 2019 16:02:52 GMT (envelope-from marius@FreeBSD.org) Message-Id: <201902131602.x1DG2qo0088554@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: marius set sender to marius@FreeBSD.org using -f From: Marius Strobl Date: Wed, 13 Feb 2019 16:02:52 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r344104 - stable/12/sys/dev/ixl X-SVN-Group: stable-12 X-SVN-Commit-Author: marius X-SVN-Commit-Paths: stable/12/sys/dev/ixl X-SVN-Commit-Revision: 344104 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: D063669EB8 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.96 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.995,0]; NEURAL_HAM_SHORT(-0.96)[-0.965,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2019 16:02:53 -0000 Author: marius Date: Wed Feb 13 16:02:52 2019 New Revision: 344104 URL: https://svnweb.freebsd.org/changeset/base/344104 Log: MFC: r343372 ixl(4): Fix handling data passed with ioctl from NVM update tool From Krzysztof: Ensure that the entire data buffer passed from the NVM update tool is copied in to kernel space and copied back out to user space using copyin() and copyout(). PR: 234104 Submitted by: Krzysztof Galazka Reported by: Finn Differential Revision: https://reviews.freebsd.org/D18817 Modified: stable/12/sys/dev/ixl/ixl_pf_main.c Directory Properties: stable/12/ (props changed) Modified: stable/12/sys/dev/ixl/ixl_pf_main.c ============================================================================== --- stable/12/sys/dev/ixl/ixl_pf_main.c Wed Feb 13 15:46:05 2019 (r344103) +++ stable/12/sys/dev/ixl/ixl_pf_main.c Wed Feb 13 16:02:52 2019 (r344104) @@ -3664,23 +3664,34 @@ ixl_handle_nvmupd_cmd(struct ixl_pf *pf, struct ifdrv struct i40e_nvm_access *nvma; device_t dev = pf->dev; enum i40e_status_code status = 0; - int perrno; + size_t nvma_size, ifd_len, exp_len; + int err, perrno; DEBUGFUNC("ixl_handle_nvmupd_cmd"); /* Sanity checks */ - if (ifd->ifd_len < sizeof(struct i40e_nvm_access) || + nvma_size = sizeof(struct i40e_nvm_access); + ifd_len = ifd->ifd_len; + + if (ifd_len < nvma_size || ifd->ifd_data == NULL) { device_printf(dev, "%s: incorrect ifdrv length or data pointer\n", __func__); device_printf(dev, "%s: ifdrv length: %zu, sizeof(struct i40e_nvm_access): %zu\n", - __func__, ifd->ifd_len, sizeof(struct i40e_nvm_access)); + __func__, ifd_len, nvma_size); device_printf(dev, "%s: data pointer: %p\n", __func__, ifd->ifd_data); return (EINVAL); } - nvma = (struct i40e_nvm_access *)ifd->ifd_data; + nvma = malloc(ifd_len, M_DEVBUF, M_WAITOK); + err = copyin(ifd->ifd_data, nvma, ifd_len); + if (err) { + device_printf(dev, "%s: Cannot get request from user space\n", + __func__); + free(nvma, M_DEVBUF); + return (err); + } if (pf->dbg_mask & IXL_DBG_NVMUPD) ixl_print_nvm_cmd(dev, nvma); @@ -3694,13 +3705,49 @@ ixl_handle_nvmupd_cmd(struct ixl_pf *pf, struct ifdrv } } - if (!(pf->state & IXL_PF_STATE_ADAPTER_RESETTING)) { - // TODO: Might need a different lock here - // IXL_PF_LOCK(pf); - status = i40e_nvmupd_command(hw, nvma, nvma->data, &perrno); - // IXL_PF_UNLOCK(pf); - } else { - perrno = -EBUSY; + if (pf->state & IXL_PF_STATE_ADAPTER_RESETTING) { + free(nvma, M_DEVBUF); + return (-EBUSY); + } + + if (nvma->data_size < 1 || nvma->data_size > 4096) { + device_printf(dev, "%s: invalid request, data size not in supported range\n", + __func__); + free(nvma, M_DEVBUF); + return (EINVAL); + } + + /* + * Older versions of the NVM update tool don't set ifd_len to the size + * of the entire buffer passed to the ioctl. Check the data_size field + * in the contained i40e_nvm_access struct and ensure everything is + * copied in from userspace. + */ + exp_len = nvma_size + nvma->data_size - 1; /* One byte is kept in struct */ + + if (ifd_len < exp_len) { + ifd_len = exp_len; + nvma = realloc(nvma, ifd_len, M_DEVBUF, M_WAITOK); + err = copyin(ifd->ifd_data, nvma, ifd_len); + if (err) { + device_printf(dev, "%s: Cannot get request from user space\n", + __func__); + free(nvma, M_DEVBUF); + return (err); + } + } + + // TODO: Might need a different lock here + // IXL_PF_LOCK(pf); + status = i40e_nvmupd_command(hw, nvma, nvma->data, &perrno); + // IXL_PF_UNLOCK(pf); + + err = copyout(nvma, ifd->ifd_data, ifd_len); + free(nvma, M_DEVBUF); + if (err) { + device_printf(dev, "%s: Cannot return data to user space\n", + __func__); + return (err); } /* Let the nvmupdate report errors, show them only when debug is enabled */