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[209.132.180.67]) by mx.google.com with ESMTP id e6si1728228pgc.252.2019.02.22.09.17.48; Fri, 22 Feb 2019 09:18:03 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727031AbfBVRQz (ORCPT + 99 others); Fri, 22 Feb 2019 12:16:55 -0500 Received: from gateway34.websitewelcome.com ([192.185.148.214]:18986 "EHLO gateway34.websitewelcome.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726757AbfBVRQy (ORCPT ); Fri, 22 Feb 2019 12:16:54 -0500 Received: from cm11.websitewelcome.com (cm11.websitewelcome.com [100.42.49.5]) by gateway34.websitewelcome.com (Postfix) with ESMTP id 59CC59CDA93 for ; Fri, 22 Feb 2019 11:16:53 -0600 (CST) Received: from gator4166.hostgator.com ([108.167.133.22]) by cmsmtp with SMTP id xERRgkMjRdnCexERRghZz9; Fri, 22 Feb 2019 11:16:53 -0600 X-Authority-Reason: nr=8 Received: from [189.250.127.169] (port=40310 helo=[192.168.1.76]) by gator4166.hostgator.com with esmtpsa (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.91) (envelope-from ) id 1gxERO-001qbQ-Ug; Fri, 22 Feb 2019 11:16:52 -0600 Subject: Re: [PATCH v2] security: mark expected switch fall-throughs and add a missing break From: "Gustavo A. R. Silva" To: Mimi Zohar , John Johansen , James Morris , "Serge E. Hallyn" , Dmitry Kasatkin , Casey Schaufler Cc: linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org, Kees Cook References: <20190208205453.GA3232@embeddedor> <1549660417.12743.18.camel@linux.ibm.com> <26221503-3755-1ee1-2265-f4e0a7e1304c@embeddedor.com> Openpgp: preference=signencrypt Autocrypt: addr=gustavo@embeddedor.com; keydata= mQINBFssHAwBEADIy3ZoPq3z5UpsUknd2v+IQud4TMJnJLTeXgTf4biSDSrXn73JQgsISBwG 2Pm4wnOyEgYUyJd5tRWcIbsURAgei918mck3tugT7AQiTUN3/5aAzqe/4ApDUC+uWNkpNnSV tjOx1hBpla0ifywy4bvFobwSh5/I3qohxDx+c1obd8Bp/B/iaOtnq0inli/8rlvKO9hp6Z4e DXL3PlD0QsLSc27AkwzLEc/D3ZaqBq7ItvT9Pyg0z3Q+2dtLF00f9+663HVC2EUgP25J3xDd 496SIeYDTkEgbJ7WYR0HYm9uirSET3lDqOVh1xPqoy+U9zTtuA9NQHVGk+hPcoazSqEtLGBk YE2mm2wzX5q2uoyptseSNceJ+HE9L+z1KlWW63HhddgtRGhbP8pj42bKaUSrrfDUsicfeJf6 m1iJRu0SXYVlMruGUB1PvZQ3O7TsVfAGCv85pFipdgk8KQnlRFkYhUjLft0u7CL1rDGZWDDr NaNj54q2CX9zuSxBn9XDXvGKyzKEZ4NY1Jfw+TAMPCp4buawuOsjONi2X0DfivFY+ZsjAIcx qQMglPtKk/wBs7q2lvJ+pHpgvLhLZyGqzAvKM1sVtRJ5j+ARKA0w4pYs5a5ufqcfT7dN6TBk LXZeD9xlVic93Ju08JSUx2ozlcfxq+BVNyA+dtv7elXUZ2DrYwARAQABtCxHdXN0YXZvIEEu IFIuIFNpbHZhIDxndXN0YXZvQGVtYmVkZGVkb3IuY29tPokCPQQTAQgAJwUCWywcDAIbIwUJ CWYBgAULCQgHAgYVCAkKCwIEFgIDAQIeAQIXgAAKCRBHBbTLRwbbMZ6tEACk0hmmZ2FWL1Xi l/bPqDGFhzzexrdkXSfTTZjBV3a+4hIOe+jl6Rci/CvRicNW4H9yJHKBrqwwWm9fvKqOBAg9 obq753jydVmLwlXO7xjcfyfcMWyx9QdYLERTeQfDAfRqxir3xMeOiZwgQ6dzX3JjOXs6jHBP cgry90aWbaMpQRRhaAKeAS14EEe9TSIly5JepaHoVdASuxklvOC0VB0OwNblVSR2S5i5hSsh ewbOJtwSlonsYEj4EW1noQNSxnN/vKuvUNegMe+LTtnbbocFQ7dGMsT3kbYNIyIsp42B5eCu JXnyKLih7rSGBtPgJ540CjoPBkw2mCfhj2p5fElRJn1tcX2McsjzLFY5jK9RYFDavez5w3lx JFgFkla6sQHcrxH62gTkb9sUtNfXKucAfjjCMJ0iuQIHRbMYCa9v2YEymc0k0RvYr43GkA3N PJYd/vf9vU7VtZXaY4a/dz1d9dwIpyQARFQpSyvt++R74S78eY/+lX8wEznQdmRQ27kq7BJS R20KI/8knhUNUJR3epJu2YFT/JwHbRYC4BoIqWl+uNvDf+lUlI/D1wP+lCBSGr2LTkQRoU8U 64iK28BmjJh2K3WHmInC1hbUucWT7Swz/+6+FCuHzap/cjuzRN04Z3Fdj084oeUNpP6+b9yW e5YnLxF8ctRAp7K4yVlvA7kCDQRbLBwMARAAsHCE31Ffrm6uig1BQplxMV8WnRBiZqbbsVJB H1AAh8tq2ULl7udfQo1bsPLGGQboJSVN9rckQQNahvHAIK8ZGfU4Qj8+CER+fYPp/MDZj+t0 DbnWSOrG7z9HIZo6PR9z4JZza3Hn/35jFggaqBtuydHwwBANZ7A6DVY+W0COEU4of7CAahQo 5NwYiwS0lGisLTqks5R0Vh+QpvDVfuaF6I8LUgQR/cSgLkR//V1uCEQYzhsoiJ3zc1HSRyOP otJTApqGBq80X0aCVj1LOiOF4rrdvQnj6iIlXQssdb+WhSYHeuJj1wD0ZlC7ds5zovXh+FfF l5qH5RFY/qVn3mNIVxeO987WSF0jh+T5ZlvUNdhedGndRmwFTxq2Li6GNMaolgnpO/CPcFpD jKxY/HBUSmaE9rNdAa1fCd4RsKLlhXda+IWpJZMHlmIKY8dlUybP+2qDzP2lY7kdFgPZRU+e zS/pzC/YTzAvCWM3tDgwoSl17vnZCr8wn2/1rKkcLvTDgiJLPCevqpTb6KFtZosQ02EGMuHQ I6Zk91jbx96nrdsSdBLGH3hbvLvjZm3C+fNlVb9uvWbdznObqcJxSH3SGOZ7kCHuVmXUcqoz ol6ioMHMb+InrHPP16aVDTBTPEGwgxXI38f7SUEn+NpbizWdLNz2hc907DvoPm6HEGCanpcA EQEAAYkCJQQYAQgADwUCWywcDAIbDAUJCWYBgAAKCRBHBbTLRwbbMdsZEACUjmsJx2CAY+QS UMebQRFjKavwXB/xE7fTt2ahuhHT8qQ/lWuRQedg4baInw9nhoPE+VenOzhGeGlsJ0Ys52sd XvUjUocKgUQq6ekOHbcw919nO5L9J2ejMf/VC/quN3r3xijgRtmuuwZjmmi8ct24TpGeoBK4 WrZGh/1hAYw4ieARvKvgjXRstcEqM5thUNkOOIheud/VpY+48QcccPKbngy//zNJWKbRbeVn imua0OpqRXhCrEVm/xomeOvl1WK1BVO7z8DjSdEBGzbV76sPDJb/fw+y+VWrkEiddD/9CSfg fBNOb1p1jVnT2mFgGneIWbU0zdDGhleI9UoQTr0e0b/7TU+Jo6TqwosP9nbk5hXw6uR5k5PF 8ieyHVq3qatJ9K1jPkBr8YWtI5uNwJJjTKIA1jHlj8McROroxMdI6qZ/wZ1ImuylpJuJwCDC ORYf5kW61fcrHEDlIvGc371OOvw6ejF8ksX5+L2zwh43l/pKkSVGFpxtMV6d6J3eqwTafL86 YJWH93PN+ZUh6i6Rd2U/i8jH5WvzR57UeWxE4P8bQc0hNGrUsHQH6bpHV2lbuhDdqo+cM9eh GZEO3+gCDFmKrjspZjkJbB5Gadzvts5fcWGOXEvuT8uQSvl+vEL0g6vczsyPBtqoBLa9SNrS VtSixD1uOgytAP7RWS474w== Message-ID: <4be79a11-bda8-b0c5-a966-d9793e47d915@embeddedor.com> Date: Fri, 22 Feb 2019 11:16:39 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0 MIME-Version: 1.0 In-Reply-To: <26221503-3755-1ee1-2265-f4e0a7e1304c@embeddedor.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - gator4166.hostgator.com X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - embeddedor.com X-BWhitelist: no X-Source-IP: 189.250.127.169 X-Source-L: No X-Exim-ID: 1gxERO-001qbQ-Ug X-Source: X-Source-Args: X-Source-Dir: X-Source-Sender: ([192.168.1.76]) [189.250.127.169]:40310 X-Source-Auth: gustavo@embeddedor.com X-Email-Count: 8 X-Source-Cap: Z3V6aWRpbmU7Z3V6aWRpbmU7Z2F0b3I0MTY2Lmhvc3RnYXRvci5jb20= X-Local-Domain: yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi James, I wonder if you can take this, please. Thanks -- Gustavo On 2/18/19 8:53 PM, Gustavo A. R. Silva wrote: > > > On 2/8/19 3:13 PM, Mimi Zohar wrote: >> On Fri, 2019-02-08 at 14:54 -0600, Gustavo A. R. Silva wrote: >>> In preparation to enabling -Wimplicit-fallthrough, mark switch >>> cases where we are expecting to fall through. >>> >>> This patch fixes the following warnings: >>> >>> security/integrity/ima/ima_template_lib.c:85:10: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/integrity/ima/ima_policy.c:940:18: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/integrity/ima/ima_policy.c:943:7: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/integrity/ima/ima_policy.c:972:21: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/integrity/ima/ima_policy.c:974:7: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/smack/smack_lsm.c:3391:9: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> security/apparmor/domain.c:569:6: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> >>> Warning level 3 was used: -Wimplicit-fallthrough=3 >>> >>> Also, add a missing break statement to fix the following warning: >>> >>> security/integrity/ima/ima_appraise.c:116:26: warning: this statement may fall through [-Wimplicit-fallthrough=] >>> >>> Acked-by: John Johansen >>> Acked-by: Casey Schaufler >>> Signed-off-by: Gustavo A. R. Silva >> >> Acked-by: Mimi Zohar >> > > Thanks, Mimi. > > -- > Gustavo > >>> --- >>> Changes in v2: >>> - Update Subject. >>> - Integrate a missing break in switch fix by Mimi Zohar. >>> >>> security/apparmor/domain.c | 2 +- >>> security/integrity/ima/ima_appraise.c | 1 + >>> security/integrity/ima/ima_policy.c | 4 ++++ >>> security/integrity/ima/ima_template_lib.c | 1 + >>> security/smack/smack_lsm.c | 3 +-- >>> 5 files changed, 8 insertions(+), 3 deletions(-) >>> >>> diff --git a/security/apparmor/domain.c b/security/apparmor/domain.c >>> index 3b266a438776..ca2dccf5b445 100644 >>> --- a/security/apparmor/domain.c >>> +++ b/security/apparmor/domain.c >>> @@ -572,7 +572,7 @@ static struct aa_label *x_to_label(struct aa_profile *profile, >>> stack = NULL; >>> break; >>> } >>> - /* fall through to X_NAME */ >>> + /* fall through - to X_NAME */ >>> case AA_X_NAME: >>> if (xindex & AA_X_CHILD) >>> /* released by caller */ >>> diff --git a/security/integrity/ima/ima_appraise.c b/security/integrity/ima/ima_appraise.c >>> index a2baa85ea2f5..5fb7127bbe68 100644 >>> --- a/security/integrity/ima/ima_appraise.c >>> +++ b/security/integrity/ima/ima_appraise.c >>> @@ -114,6 +114,7 @@ static void ima_set_cache_status(struct integrity_iint_cache *iint, >>> break; >>> case CREDS_CHECK: >>> iint->ima_creds_status = status; >>> + break; >>> case FILE_CHECK: >>> case POST_SETATTR: >>> iint->ima_file_status = status; >>> diff --git a/security/integrity/ima/ima_policy.c b/security/integrity/ima/ima_policy.c >>> index 26fa9d9723f6..e0cc323f948f 100644 >>> --- a/security/integrity/ima/ima_policy.c >>> +++ b/security/integrity/ima/ima_policy.c >>> @@ -936,10 +936,12 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) >>> case Opt_uid_gt: >>> case Opt_euid_gt: >>> entry->uid_op = &uid_gt; >>> + /* fall through */ >>> case Opt_uid_lt: >>> case Opt_euid_lt: >>> if ((token == Opt_uid_lt) || (token == Opt_euid_lt)) >>> entry->uid_op = &uid_lt; >>> + /* fall through */ >>> case Opt_uid_eq: >>> case Opt_euid_eq: >>> uid_token = (token == Opt_uid_eq) || >>> @@ -968,9 +970,11 @@ static int ima_parse_rule(char *rule, struct ima_rule_entry *entry) >>> break; >>> case Opt_fowner_gt: >>> entry->fowner_op = &uid_gt; >>> + /* fall through */ >>> case Opt_fowner_lt: >>> if (token == Opt_fowner_lt) >>> entry->fowner_op = &uid_lt; >>> + /* fall through */ >>> case Opt_fowner_eq: >>> ima_log_string_op(ab, "fowner", args[0].from, >>> entry->fowner_op); >>> diff --git a/security/integrity/ima/ima_template_lib.c b/security/integrity/ima/ima_template_lib.c >>> index 43752002c222..513b457ae900 100644 >>> --- a/security/integrity/ima/ima_template_lib.c >>> +++ b/security/integrity/ima/ima_template_lib.c >>> @@ -83,6 +83,7 @@ static void ima_show_template_data_ascii(struct seq_file *m, >>> /* skip ':' and '\0' */ >>> buf_ptr += 2; >>> buflen -= buf_ptr - field_data->data; >>> + /* fall through */ >>> case DATA_FMT_DIGEST: >>> case DATA_FMT_HEX: >>> if (!buflen) >>> diff --git a/security/smack/smack_lsm.c b/security/smack/smack_lsm.c >>> index 587dc06eba33..5c1613519d5a 100644 >>> --- a/security/smack/smack_lsm.c >>> +++ b/security/smack/smack_lsm.c >>> @@ -3380,13 +3380,12 @@ static void smack_d_instantiate(struct dentry *opt_dentry, struct inode *inode) >>> */ >>> final = &smack_known_star; >>> /* >>> - * Fall through. >>> - * >>> * If a smack value has been set we want to use it, >>> * but since tmpfs isn't giving us the opportunity >>> * to set mount options simulate setting the >>> * superblock default. >>> */ >>> + /* Fall through */ >>> default: >>> /* >>> * This isn't an understood special case. >>