From patchwork Thu May 13 20:07:54 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Casey Schaufler X-Patchwork-Id: 12256481 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3539C43460 for ; Thu, 13 May 2021 20:21:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A97AF613B5 for ; Thu, 13 May 2021 20:21:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232300AbhEMUWs (ORCPT ); Thu, 13 May 2021 16:22:48 -0400 Received: from sonic307-15.consmr.mail.ne1.yahoo.com ([66.163.190.38]:42428 "EHLO sonic307-15.consmr.mail.ne1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232371AbhEMUWr (ORCPT ); Thu, 13 May 2021 16:22:47 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1620937297; bh=0WWcwuwGjN8XC9PA6SxswcZEHx4sWKSep230V5PI4fc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From:Subject:Reply-To; b=FNvRNE1VUwtgVFrYGImHg96cGeOsdcGMOCK8gc1u+Aly3+bVUPCAyYnUZYUS9iEdAITxCUD1U3qR3D2RZIJxKeLMVqeSL+ppRhCGCJwGUJzE5v25cWHublKQ6weKxbbXxOlm6Txo5t42mFvgFIUNOqWcVomdmZOewx5gDviXPsYKzCU4zIPskh5Zwyw3tCegG5evxpMv0hXCfUuiyE4dMgKew71T0KUvoME9+gL3HXbIFXaoO9wx6AvjR+DXNcw7Wl4qg/pJ4AFwnsoG/pbjP/Hkn8hKBJqT2LvqpkCvtAVmbTu2M4O5QuRMK3GV1pF/9shd/w8qrFAKIcJRhWlKLw== X-SONIC-DKIM-SIGN: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1620937297; bh=uYHXWQUZ3oupDcT3yb+kqHjWYt7LPeJbIhqTUiGgl0N=; h=X-Sonic-MF:From:To:Subject:Date:From:Subject; b=XnNeT3SBQ2e6fAXcr4sWC1pVyOmeSDr4MKaW/9OnKOWRCWnybkUW5z1mXjiSMg10RAnMuo6sJVmJQpWaLWGreyjiZLVZH0WXB5UsIPkuXKxwaytJkpzRSTdCRYzNMOQp7xKWFQiSIaOB1pNZ5u6YTF1LoMbo/Gy4XsXRix5ShDjH5+Zsx/93ARY0browm1wzq3XGXH8+h9UOUpPc3U0RUUk0D04nyG28vrSaQj0qMw2Ls5mTrjSPSKzvMPHhXSFNpG1e4ofUcxlPEHSvOiP88SkwGKeNZAkBgAtGo5rWi6suNEA5zQ6LVGKYP2NOEg5dBxcN18tVQY3LD5/EpYLuWg== X-YMail-OSG: pcZpkisVM1kdsNfxhV.fBkJQTCPcAVIf3tXzmrwSj7p7YddoIDXeZj4al3jOS_Z V_vAONui18HGqxUiuMtYn8llkAY6Egqq1CxLCvxkPKVzHw6lwvAVXIiIkzoD1XkfJrob4bVwdrUE wNGVuT6sPp9T907AYp2Wr0kcep8iOgWMyHZSleIvcVwR73M5DH4OFZmaA1QkgSupq1uAPaq.Wro7 YNH5D7_3611OzlhIUQ1UpM1Xs4_pQo_WL6eYk9VrziXelfXCJv97iKiqtfFfs._59byaI2Mgz.bx zQ7xCstY1RKj8zo0lPR5s2Ukt5oidzFaQzNbbij9H4Bi1i66DOIwKwOA2k1YkX766tPG1BR8DoJb p9Gmni0aDNet11.CTuQwxaqOmTS4PTSJlmtM1nnI1s23xU5zYZKIFAlPk80KUwvlUE2.n8b1s3xv n7GtfmPccKSs04lSF0OaEqKkqNEauK6eg9IFmlIL9Yipk8SoY5D.fhxL.nkH6mrn2ql8t1hPMyqa aZ3jGHrS1nhJQ1_TtkI9UUAAVLmAacWmTNf7y6OBd66ZuZP7HUK5wJu88RpA7bx7s9XVy7CzB8CY pckjBIX7xYxmCxC1Zo47sKPhSCDdPe9byqDKJ35DMMuNtP7E2Utw99qpjif7sSCs41sXm9CuhlOt 813YmIMAiPXoCoY04PmJCbAMTWS14FQGDiCcND.k40NSMpdfULaAZnLmN9MT5oqPah38CJbROR_W eLXTsgRtIcZEwgM3HZ62J26iH8TqG4e623PvcfUVheafcQhTBhWakFcFoULndGN.00UWpmDgpYxK 4JiJ6AsM8Y5qKBM2V1PBvPMZd6bVEJLNDYMXOJPCV5eiqgWid5InyIkuGAK770DMtG0SXsc6Pvts Ja0d6aBTvpTYmfOTlFAqCwHlL7waDfrVReYhOtXNgy.KEsRPMxEty6QksKtVx.UdtVik_YSUx6F. OWTfu_iHxBgitkb_PhvKW9Jkoecr4A0nKPOJNdvdulZvLgoSb4Kg3JCE4dARktuJe8zZ9wUXKqeW Q.dwBH9FL8UfTmCoWnxSl5RVPSnr5xBuRxSmKN3Lzxe_seqa5skMjxo6QNCgiLk6NFn05M6GFV4A I9Qv_GzB.Fpc_ibgDjKUSlBufZNhC6wG0h8CweORPcTNx8blMM4ooo9Z7iTIkoU0aBMrz6XHviNo xtOYRcFSbSxxgC1Z8mith_v3G0y_IkJYO5V8ETa5hYIPC37_VUZXWS5UMsRO07Ew.6T4JS4p80X5 Uip1Q_rOiDacX5F3kCR6ETMXtSAtKIGNVz2_GEDEYFI3VEgToSIwZ9KFaxttiv6opJKesb.L5I_P LoPPZiV97BG2c9ydMpQg_FiVjJYiqdbTQkVq1k3man2ZzDO8fLeNpXs7BFL1NazS.OqOVVZ3Kpfu AiD8cfwN4bhCb.wvxSphH5n_YVBzwjl53hfkr7UtmypyI5mamKBs8hlvKFwRZZ7HgUv5zCKPpdpv obxHk8Fa2_Fr.8Fm.VCO4TcHxfBMK3xe_oJC.RjndRdbkmjeAcVEH_OF5Wbxw1NYg3s1tsWAEFZn fl7R7QXGX03sV0Qrv03Cgzx6VEJp6vvjAvmwkHjG69pAFndeNnJVjYjN9Ei.rOnSiX5tXVjrTu5D j.LWNRXTugLGx1i87VGj6X1gyNbX962eEd7vjC.DQGM9fuwHqAlSmjKMXEqJmKxlRK4Urgf1BT6L 6EC5G6NgkHw63Ts4khhAfNc0EE0Ms1FBAPgrdvVAxbRbjVhuAwtyyrb.Ocmort4MtucpXbZjklmG SgWKv6ShXevXGfizLp_m_XQlDrUdXWdM75CHpdKKyZs3XfIOdFB9tLGa.2CvAoGCccvsdNDbStgl b2Iwuz2WBbh9DKxyeyfmudkrguBWbo3VJdPIcJYejabg0KZBuhexUE.xFizXddM8wJr7ghGbFlCx 3gtLMuIaZnKDUy9p3rQbhjS4U21Qsuxs4uDXdvJrOqw.mkeM0D5YjrOYbWwoFk0ojW52bxkL4Djg KzQBVguy8IEI9fD2cTvnuJHf26xu_jGobwAzQ4D4F7xSRov6E6bt.zXDTEf9_DYGIVzwjmPk2Q13 NX9scnkUSo3oM_w1sFTGacbKZ0mIZJ62ffyvW95kFKiyBpQF1EHXehyi3TY07NK9S4ukY7TJEi5x .7HEzrpbB.3p4MxflpCB9iWstqXw3YmInEa1.6xO9OZg5igw_Q_K3pyT0tBe8UedvhJWdMYb0.yK 0TKnIHT2YiZyBvSssvE8iGJbdkPM4l7.IdUpLwo1hMWsf_S1w7zjGX5WBfxWZYwMj.MMK9UHCfaI 3KebMcb_cQ70d7tmQnjVvv9katnUbplrpVJ4wvTfHpmkjjbB1Ew9.sgPTFEKQ5SI04wTdtUQ3j4Z UmUynfvGzFpQmKvrF_sjSZkUNbb4D3skK3NS6umNPotbY9am7AJPGzsrdTYb.5pyNsw5_uebBR50 PZ_wnu43mFaHanMZM6tR_dnu3wl4aMBK.hT1JmHiOgijDfHumLmGhRTbWmTy5IKAmpdi4vBwkmlC _acam4xnjwvLJiLtYeOcJ0wgMg.aKfFjavD4nc9kDGS31XYUJnLX158xhP2HlALXlhEgBNgvb12x 4pxWFgOCss2P53SbZ2ckX0RvaBmAakCKgVXfHSTMihM4ZcuWHDHM0rOAhOMHJHk0Y6ekF1wpF.9B gf7D48q0uFGktYenBuLAY2UL8HuDQ5ax6qCLEzZ2m3dW8dGnmjy8JCyVqwm1PPBEUNJkYjBrEY5r x4JV3f3oWMRDsWECWVZVezO6bMLhMzX00IxAOEZ_1tUoN._GQYFS_Xo5T._pXjVGVGquxXr6duP4 KW35XDipABjk4sg1hksfPhabZWbnUEcyUNBzdM3B5Vm5vMX3CmioTlr3kW3P_BO4RrsUOu4EYGWB xzAGjTvsJHW3A16R3EO5XHqJar.trF6NKLpA6Cor18b2s8tdaY7pRSiSDk92iUjYKbvw.2VyVb90 ckY5mdySnMEw1pikLiM.EU0Bapf.touQceV5ndQolBwcHMoTSlhDFAX2mvmYmJ.m6coLKkYnkuqw YfNZPEa.EuRCglnW2zVN16wkvyonVWESLWYZ2FusDgTN5SBFMVqISmKrlIDMF2QntGrS7iGZ5NCc lW2Iw4bn0FrozdWKtyHD3Jtq0mqfrTwVEh.WtVEAbWnuDuQPynOtPPRW0l_0ZRsJMFmKhrt7ojj. buJIGNNdJ53XY00_uQ6.T5AnfkqfbVQ9UhRJwUWScSule8lnbuQ-- X-Sonic-MF: Received: from sonic.gate.mail.ne1.yahoo.com by sonic307.consmr.mail.ne1.yahoo.com with HTTP; Thu, 13 May 2021 20:21:37 +0000 Received: by kubenode549.mail-prod1.omega.ne1.yahoo.com (VZM Hermes SMTP Server) with ESMTPA ID d3f3576f9dc925e37a27218e0790434c; Thu, 13 May 2021 20:21:32 +0000 (UTC) From: Casey Schaufler To: casey.schaufler@intel.com, jmorris@namei.org, linux-security-module@vger.kernel.org, selinux@vger.kernel.org Cc: casey@schaufler-ca.com, linux-audit@redhat.com, keescook@chromium.org, john.johansen@canonical.com, penguin-kernel@i-love.sakura.ne.jp, paul@paul-moore.com, sds@tycho.nsa.gov, linux-kernel@vger.kernel.org, linux-integrity@vger.kernel.org Subject: [PATCH v26 12/25] LSM: Use lsmblob in security_cred_getsecid Date: Thu, 13 May 2021 13:07:54 -0700 Message-Id: <20210513200807.15910-13-casey@schaufler-ca.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210513200807.15910-1-casey@schaufler-ca.com> References: <20210513200807.15910-1-casey@schaufler-ca.com> MIME-Version: 1.0 Precedence: bulk List-ID: Change the security_cred_getsecid() interface to fill in a lsmblob instead of a u32 secid. The associated data elements in the audit sub-system are changed from a secid to a lsmblob to accommodate multiple possible LSM audit users. Reviewed-by: Kees Cook Reviewed-by: John Johansen Acked-by: Stephen Smalley Acked-by: Paul Moore Signed-off-by: Casey Schaufler Cc: linux-integrity@vger.kernel.org Cc: linux-audit@redhat.com --- include/linux/security.h | 2 +- kernel/audit.c | 25 +++++++---------------- kernel/audit.h | 3 ++- kernel/auditsc.c | 34 ++++++++++++------------------- security/integrity/ima/ima_main.c | 8 ++++---- security/security.c | 12 ++++++++--- 6 files changed, 36 insertions(+), 48 deletions(-) diff --git a/include/linux/security.h b/include/linux/security.h index 64f898e5e854..c1c31eb23859 100644 --- a/include/linux/security.h +++ b/include/linux/security.h @@ -481,7 +481,7 @@ int security_cred_alloc_blank(struct cred *cred, gfp_t gfp); void security_cred_free(struct cred *cred); int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp); void security_transfer_creds(struct cred *new, const struct cred *old); -void security_cred_getsecid(const struct cred *c, u32 *secid); +void security_cred_getsecid(const struct cred *c, struct lsmblob *blob); int security_kernel_act_as(struct cred *new, struct lsmblob *blob); int security_kernel_create_files_as(struct cred *new, struct inode *inode); int security_kernel_module_request(char *kmod_name); diff --git a/kernel/audit.c b/kernel/audit.c index d92c7b894183..8ec64e6e8bc0 100644 --- a/kernel/audit.c +++ b/kernel/audit.c @@ -125,7 +125,7 @@ static u32 audit_backlog_wait_time = AUDIT_BACKLOG_WAIT_TIME; /* The identity of the user shutting down the audit system. */ static kuid_t audit_sig_uid = INVALID_UID; static pid_t audit_sig_pid = -1; -static u32 audit_sig_sid; +struct lsmblob audit_sig_lsm; /* Records can be lost in several ways: 0) [suppressed in audit_alloc] @@ -1441,29 +1441,21 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh) } case AUDIT_SIGNAL_INFO: len = 0; - if (audit_sig_sid) { - struct lsmblob blob; - - /* - * lsmblob_init sets all values in the lsmblob - * to audit_sig_sid. This is temporary until - * audit_sig_sid is converted to a lsmblob, which - * happens later in this patch set. - */ - lsmblob_init(&blob, audit_sig_sid); - err = security_secid_to_secctx(&blob, &ctx, &len); + if (lsmblob_is_set(&audit_sig_lsm)) { + err = security_secid_to_secctx(&audit_sig_lsm, &ctx, + &len); if (err) return err; } sig_data = kmalloc(sizeof(*sig_data) + len, GFP_KERNEL); if (!sig_data) { - if (audit_sig_sid) + if (lsmblob_is_set(&audit_sig_lsm)) security_release_secctx(ctx, len); return -ENOMEM; } sig_data->uid = from_kuid(&init_user_ns, audit_sig_uid); sig_data->pid = audit_sig_pid; - if (audit_sig_sid) { + if (lsmblob_is_set(&audit_sig_lsm)) { memcpy(sig_data->ctx, ctx, len); security_release_secctx(ctx, len); } @@ -2352,7 +2344,6 @@ int audit_set_loginuid(kuid_t loginuid) int audit_signal_info(int sig, struct task_struct *t) { kuid_t uid = current_uid(), auid; - struct lsmblob blob; if (auditd_test_task(t) && (sig == SIGTERM || sig == SIGHUP || @@ -2363,9 +2354,7 @@ int audit_signal_info(int sig, struct task_struct *t) audit_sig_uid = auid; else audit_sig_uid = uid; - security_task_getsecid_subj(current, &blob); - /* scaffolding until audit_sig_sid is converted */ - audit_sig_sid = blob.secid[0]; + security_task_getsecid_subj(current, &audit_sig_lsm); } return audit_signal_info_syscall(t); diff --git a/kernel/audit.h b/kernel/audit.h index 1522e100fd17..23a85a470121 100644 --- a/kernel/audit.h +++ b/kernel/audit.h @@ -9,6 +9,7 @@ #include #include #include +#include #include #include @@ -134,7 +135,7 @@ struct audit_context { kuid_t target_auid; kuid_t target_uid; unsigned int target_sessionid; - u32 target_sid; + struct lsmblob target_lsm; char target_comm[TASK_COMM_LEN]; struct audit_tree_refs *trees, *first_trees; diff --git a/kernel/auditsc.c b/kernel/auditsc.c index 6684927f12fc..573c6a8e505f 100644 --- a/kernel/auditsc.c +++ b/kernel/auditsc.c @@ -111,7 +111,7 @@ struct audit_aux_data_pids { kuid_t target_auid[AUDIT_AUX_PIDS]; kuid_t target_uid[AUDIT_AUX_PIDS]; unsigned int target_sessionid[AUDIT_AUX_PIDS]; - u32 target_sid[AUDIT_AUX_PIDS]; + struct lsmblob target_lsm[AUDIT_AUX_PIDS]; char target_comm[AUDIT_AUX_PIDS][TASK_COMM_LEN]; int pid_count; }; @@ -991,14 +991,14 @@ static inline void audit_free_context(struct audit_context *context) } static int audit_log_pid_context(struct audit_context *context, pid_t pid, - kuid_t auid, kuid_t uid, unsigned int sessionid, - u32 sid, char *comm) + kuid_t auid, kuid_t uid, + unsigned int sessionid, + struct lsmblob *blob, char *comm) { struct audit_buffer *ab; char *ctx = NULL; u32 len; int rc = 0; - struct lsmblob blob; ab = audit_log_start(context, GFP_KERNEL, AUDIT_OBJ_PID); if (!ab) @@ -1007,9 +1007,8 @@ static int audit_log_pid_context(struct audit_context *context, pid_t pid, audit_log_format(ab, "opid=%d oauid=%d ouid=%d oses=%d", pid, from_kuid(&init_user_ns, auid), from_kuid(&init_user_ns, uid), sessionid); - if (sid) { - lsmblob_init(&blob, sid); - if (security_secid_to_secctx(&blob, &ctx, &len)) { + if (lsmblob_is_set(blob)) { + if (security_secid_to_secctx(blob, &ctx, &len)) { audit_log_format(ab, " obj=(none)"); rc = 1; } else { @@ -1580,7 +1579,7 @@ static void audit_log_exit(void) axs->target_auid[i], axs->target_uid[i], axs->target_sessionid[i], - axs->target_sid[i], + &axs->target_lsm[i], axs->target_comm[i])) call_panic = 1; } @@ -1589,7 +1588,7 @@ static void audit_log_exit(void) audit_log_pid_context(context, context->target_pid, context->target_auid, context->target_uid, context->target_sessionid, - context->target_sid, context->target_comm)) + &context->target_lsm, context->target_comm)) call_panic = 1; if (context->pwd.dentry && context->pwd.mnt) { @@ -1765,7 +1764,7 @@ void __audit_syscall_exit(int success, long return_code) context->aux = NULL; context->aux_pids = NULL; context->target_pid = 0; - context->target_sid = 0; + lsmblob_init(&context->target_lsm, 0); context->sockaddr_len = 0; context->type = 0; context->fds[0] = -1; @@ -2319,6 +2318,7 @@ void __audit_ipc_obj(struct kern_ipc_perm *ipcp) { struct audit_context *context = audit_context(); struct lsmblob blob; + context->ipc.uid = ipcp->uid; context->ipc.gid = ipcp->gid; context->ipc.mode = ipcp->mode; @@ -2417,15 +2417,12 @@ int __audit_sockaddr(int len, void *a) void __audit_ptrace(struct task_struct *t) { struct audit_context *context = audit_context(); - struct lsmblob blob; context->target_pid = task_tgid_nr(t); context->target_auid = audit_get_loginuid(t); context->target_uid = task_uid(t); context->target_sessionid = audit_get_sessionid(t); - security_task_getsecid_obj(t, &blob); - /* scaffolding - until target_sid is converted */ - context->target_sid = blob.secid[0]; + security_task_getsecid_obj(t, &context->target_lsm); memcpy(context->target_comm, t->comm, TASK_COMM_LEN); } @@ -2441,7 +2438,6 @@ int audit_signal_info_syscall(struct task_struct *t) struct audit_aux_data_pids *axp; struct audit_context *ctx = audit_context(); kuid_t t_uid = task_uid(t); - struct lsmblob blob; if (!audit_signals || audit_dummy_context()) return 0; @@ -2453,9 +2449,7 @@ int audit_signal_info_syscall(struct task_struct *t) ctx->target_auid = audit_get_loginuid(t); ctx->target_uid = t_uid; ctx->target_sessionid = audit_get_sessionid(t); - security_task_getsecid_obj(t, &blob); - /* scaffolding until target_sid is converted */ - ctx->target_sid = blob.secid[0]; + security_task_getsecid_obj(t, &ctx->target_lsm); memcpy(ctx->target_comm, t->comm, TASK_COMM_LEN); return 0; } @@ -2476,9 +2470,7 @@ int audit_signal_info_syscall(struct task_struct *t) axp->target_auid[axp->pid_count] = audit_get_loginuid(t); axp->target_uid[axp->pid_count] = t_uid; axp->target_sessionid[axp->pid_count] = audit_get_sessionid(t); - security_task_getsecid_obj(t, &blob); - /* scaffolding until target_sid is converted */ - axp->target_sid[axp->pid_count] = blob.secid[0]; + security_task_getsecid_obj(t, &axp->target_lsm[axp->pid_count]); memcpy(axp->target_comm[axp->pid_count], t->comm, TASK_COMM_LEN); axp->pid_count++; diff --git a/security/integrity/ima/ima_main.c b/security/integrity/ima/ima_main.c index 9d1ed00eb349..b3e00340a97c 100644 --- a/security/integrity/ima/ima_main.c +++ b/security/integrity/ima/ima_main.c @@ -470,7 +470,6 @@ int ima_file_mprotect(struct vm_area_struct *vma, unsigned long prot) int ima_bprm_check(struct linux_binprm *bprm) { int ret; - u32 secid; struct lsmblob blob; security_task_getsecid_subj(current, &blob); @@ -480,9 +479,10 @@ int ima_bprm_check(struct linux_binprm *bprm) if (ret) return ret; - security_cred_getsecid(bprm->cred, &secid); - return process_measurement(bprm->file, bprm->cred, secid, NULL, 0, - MAY_EXEC, CREDS_CHECK); + security_cred_getsecid(bprm->cred, &blob); + /* scaffolding until process_measurement changes */ + return process_measurement(bprm->file, bprm->cred, blob.secid[0], + NULL, 0, MAY_EXEC, CREDS_CHECK); } /** diff --git a/security/security.c b/security/security.c index 54f4a4ead69f..f5407a85641e 100644 --- a/security/security.c +++ b/security/security.c @@ -1796,10 +1796,16 @@ void security_transfer_creds(struct cred *new, const struct cred *old) call_void_hook(cred_transfer, new, old); } -void security_cred_getsecid(const struct cred *c, u32 *secid) +void security_cred_getsecid(const struct cred *c, struct lsmblob *blob) { - *secid = 0; - call_void_hook(cred_getsecid, c, secid); + struct security_hook_list *hp; + + lsmblob_init(blob, 0); + hlist_for_each_entry(hp, &security_hook_heads.cred_getsecid, list) { + if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) + continue; + hp->hook.cred_getsecid(c, &blob->secid[hp->lsmid->slot]); + } } EXPORT_SYMBOL(security_cred_getsecid);