From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1944) id 75AE1385152E; Thu, 27 Oct 2022 13:59:49 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 75AE1385152E DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sourceware.org; s=default; t=1666879189; bh=yEu+RERHlwQwuSNLcZ0WuznNKx+wKZYoaoIPs0lQIj0=; h=From:To:Subject:Date:From; b=leZxSae/4srDY6PHxTzyZJBuA226szCfu/7y5E7xrQMeym1y7F4b2PDOlmrnpbv1T 9lL5353emgUtfz8BjcorXtLMRkdHSCh+nexQ+5j31Cq4R+dxHlfNU3F67dPGwiGCKn iw9Knto5eDYkkKoidLYpPN/8S3jYE8ZBVNEsbVO0= Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit From: Szabolcs Nagy To: glibc-cvs@sourceware.org Subject: [glibc/arm/morello/main] cheri: nptl: Check user provided stack for PCS constraints X-Act-Checkin: glibc X-Git-Author: Carlos Eduardo Seo X-Git-Refname: refs/heads/arm/morello/main X-Git-Oldrev: 82187c0633092f7b4f55ec93ab651dec84fe1413 X-Git-Newrev: c6827cd8b558a4fa191ad285bde4a17efdd758db Message-Id: <20221027135949.75AE1385152E@sourceware.org> Date: Thu, 27 Oct 2022 13:59:49 +0000 (GMT) List-Id: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=c6827cd8b558a4fa191ad285bde4a17efdd758db commit c6827cd8b558a4fa191ad285bde4a17efdd758db Author: Carlos Eduardo Seo Date: Thu Mar 17 20:51:32 2022 -0300 cheri: nptl: Check user provided stack for PCS constraints In pthread_attr_setstack fail with EINVAL if the input stack does not meet the PCS constraints. Diff: --- nptl/pthread_attr_setstack.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/nptl/pthread_attr_setstack.c b/nptl/pthread_attr_setstack.c index e08b167df6..a0338c2752 100644 --- a/nptl/pthread_attr_setstack.c +++ b/nptl/pthread_attr_setstack.c @@ -19,7 +19,9 @@ #include #include "pthreadP.h" #include - +#ifdef __CHERI_PURE_CAPABILITY__ +# include +#endif #ifndef NEW_VERNUM # define NEW_VERNUM GLIBC_2_3_3 @@ -43,6 +45,11 @@ __pthread_attr_setstack (pthread_attr_t *attr, void *stackaddr, EXTRA_PARAM_CHECKS; #endif +#ifdef __CHERI_PURE_CAPABILITY__ + if (!STACK_CAP_CHECK (stackaddr, stacksize)) + return EINVAL; +#endif + iattr->stacksize = stacksize; #if _STACK_GROWS_DOWN iattr->stackaddr = (char *) stackaddr + stacksize;