From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 1363) id D6D65384AB71; Tue, 23 Apr 2024 17:09:15 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org D6D65384AB71 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1713892155; bh=dhJALo6nq1ksW7GZ3jpSeyXetFpw0BXeq3jjP+eH1bs=; h=From:To:Subject:Date:From; b=Shv1AWD9N9uCD6TEVYZr5B3Iw7QK+qQ0a/CetN1bWzMF5ZK8V1dfVj63GqN8IN/0T MO9n3DTfKhDFlxb6FJVrltuFTPQYcohfbReClMpyGGFQ8fk7SIyjHy75fn1NUIiDR/ u8J1xjSNYC8tqDZaZ3GvHWuzmwiywuoW9ZSb9FlU= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Uros Bizjak To: gcc-cvs@gcc.gnu.org Subject: [gcc r12-10388] tree-optimization/111736 - avoid address sanitizing of __seg_gs X-Act-Checkin: gcc X-Git-Author: Richard Biener X-Git-Refname: refs/heads/releases/gcc-12 X-Git-Oldrev: 61d1962e7c3c32da6962d9cb20f6fd996501f3f2 X-Git-Newrev: e89b5ed62a5a06fb8918ffa1616f0f37c8d359c3 Message-Id: <20240423170915.D6D65384AB71@sourceware.org> Date: Tue, 23 Apr 2024 17:09:15 +0000 (GMT) List-Id: https://gcc.gnu.org/g:e89b5ed62a5a06fb8918ffa1616f0f37c8d359c3 commit r12-10388-ge89b5ed62a5a06fb8918ffa1616f0f37c8d359c3 Author: Richard Biener Date: Thu Mar 21 08:30:39 2024 +0100 tree-optimization/111736 - avoid address sanitizing of __seg_gs The following more thoroughly avoids address sanitizing accesses to non-generic address-spaces. PR tree-optimization/111736 * asan.cc (instrument_derefs): Do not instrument accesses to non-generic address-spaces. * gcc.target/i386/pr111736.c: New testcase. (cherry picked from commit 134ef2a8cac1a5cc718739bd7d3b3472947c80d6) Diff: --- gcc/asan.cc | 4 ++++ gcc/testsuite/gcc.target/i386/pr111736.c | 23 +++++++++++++++++++++++ 2 files changed, 27 insertions(+) diff --git a/gcc/asan.cc b/gcc/asan.cc index 0c5afa36cb8..24cf2b8376b 100644 --- a/gcc/asan.cc +++ b/gcc/asan.cc @@ -2712,6 +2712,10 @@ instrument_derefs (gimple_stmt_iterator *iter, tree t, if (VAR_P (inner) && DECL_HARD_REGISTER (inner)) return; + /* Accesses to non-generic address-spaces should not be instrumented. */ + if (!ADDR_SPACE_GENERIC_P (TYPE_ADDR_SPACE (TREE_TYPE (inner)))) + return; + poly_int64 decl_size; if ((VAR_P (inner) || TREE_CODE (inner) == RESULT_DECL) && offset == NULL_TREE diff --git a/gcc/testsuite/gcc.target/i386/pr111736.c b/gcc/testsuite/gcc.target/i386/pr111736.c new file mode 100644 index 00000000000..231fdd07e80 --- /dev/null +++ b/gcc/testsuite/gcc.target/i386/pr111736.c @@ -0,0 +1,23 @@ +/* { dg-do compile } */ +/* { dg-options "-O2 -fsanitize=address" } */ + +int __seg_gs m; + +int foo (void) +{ + return m; +} + +extern int __seg_gs n; + +int bar (void) +{ + return n; +} + +int baz (int __seg_gs *o) +{ + return *o; +} + +/* { dg-final { scan-assembler-not "asan_report_load" } } */