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Tue, 1 Aug 2023 20:24:10 GMT (envelope-from git) Date: Tue, 1 Aug 2023 20:24:10 GMT Message-Id: <202308012024.371KOAHb046216@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Dmitry Chagin Subject: git: 5a7e48dddfb5 - main - tests: Add MAP_32BIT flag test List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-dev-commits-src-main@freebsd.org X-BeenThere: dev-commits-src-main@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: dchagin X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 5a7e48dddfb5a668ded4742b79e6f6f88b647e6a Auto-Submitted: auto-generated The branch main has been updated by dchagin: URL: https://cgit.FreeBSD.org/src/commit/?id=5a7e48dddfb5a668ded4742b79e6f6f88b647e6a commit 5a7e48dddfb5a668ded4742b79e6f6f88b647e6a Author: Dmitry Chagin AuthorDate: 2023-08-01 20:23:15 +0000 Commit: Dmitry Chagin CommitDate: 2023-08-01 20:23:15 +0000 tests: Add MAP_32BIT flag test Reviewed by: kib, markj Differential Revision: https://reviews.freebsd.org/D41236 MFC after: 1 month --- tests/sys/vm/Makefile | 8 ++++++ tests/sys/vm/mmap_map_32bit_helper.c | 51 ++++++++++++++++++++++++++++++++++++ tests/sys/vm/mmap_map_32bit_test.sh | 37 ++++++++++++++++++++++++++ 3 files changed, 96 insertions(+) diff --git a/tests/sys/vm/Makefile b/tests/sys/vm/Makefile index 8ef8a45e5f39..9aac49bc5320 100644 --- a/tests/sys/vm/Makefile +++ b/tests/sys/vm/Makefile @@ -9,4 +9,12 @@ ATF_TESTS_C+= mlock_test \ page_fault_signal \ shared_shadow_inval_test +.if ${MACHINE_ARCH} != "i386" && ${MACHINE} != "arm" && \ + (${MACHINE} != "powerpc" || ${MACHINE_ARCH} != "powerpc") + # MAP_32BIT is only available on 64-bit platforms +BINDIR= ${TESTSDIR} +ATF_TESTS_SH+= mmap_map_32bit_test +PROGS+= mmap_map_32bit_helper +.endif + .include diff --git a/tests/sys/vm/mmap_map_32bit_helper.c b/tests/sys/vm/mmap_map_32bit_helper.c new file mode 100644 index 000000000000..47d4b2c53c20 --- /dev/null +++ b/tests/sys/vm/mmap_map_32bit_helper.c @@ -0,0 +1,51 @@ +/*- + * Copyright (c) 2023 Dmitry Chagin + * + * SPDX-License-Identifier: BSD-2-Clause + */ + +#include + +#include +#include +#include +#include + +_Static_assert(sizeof(vm_offset_t) >= 8, "Test is not intended for ILP32"); +#define MAP_32BIT_MAX_ADDR ((vm_offset_t)1 << 31) + +int +main(void) +{ + size_t pagesize; + void *s32; + int fd; + + if ((pagesize = getpagesize()) <= 0) + err(1, "getpagesize"); + + fd = open("/dev/zero", O_RDONLY); + if (fd <= 0) + err(1, "open failed"); + + s32 = mmap(NULL, pagesize, PROT_READ, MAP_32BIT | MAP_PRIVATE, fd, 0); + if (s32 == MAP_FAILED) + err(1, "mmap MAP_32BIT | MAP_PRIVATE failed"); + if (((vm_offset_t)s32 + pagesize) > MAP_32BIT_MAX_ADDR) + errx(1, "mmap invalid result %p", s32); + + close(fd); + if (munmap(s32, pagesize) != 0) + err(1, "munmap failed"); + + s32 = mmap(NULL, pagesize, PROT_READ | PROT_WRITE, + MAP_32BIT | MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); + if (s32 == MAP_FAILED) + err(1, "mmap MAP_32BIT | MAP_ANONYMOUS | MAP_PRIVATE failed"); + if (((vm_offset_t)s32 + pagesize) > MAP_32BIT_MAX_ADDR) + errx(1, "mmap invalid result %p", s32); + + if (munmap(s32, pagesize) != 0) + err(1, "munmap failed"); + exit(0); +} diff --git a/tests/sys/vm/mmap_map_32bit_test.sh b/tests/sys/vm/mmap_map_32bit_test.sh new file mode 100644 index 000000000000..2df53e78f1b7 --- /dev/null +++ b/tests/sys/vm/mmap_map_32bit_test.sh @@ -0,0 +1,37 @@ +# +# Copyright (c) 2022 Dmitry Chagin +# +# SPDX-License-Identifier: BSD-2-Clause +# +# Simple test of MAP_32BIT flag w/wo ASLR + +map_32bit_w_aslr_head() +{ + atf_set descr "MAP_32BIT with ASLR" + atf_set require.progs proccontrol +} + +map_32bit_w_aslr_body() +{ + atf_check -s exit:0 -x proccontrol -m aslr -s enable \ + $(atf_get_srcdir)/mmap_map_32bit_helper +} + +map_32bit_wo_aslr_head() +{ + atf_set descr "MAP_32BIT without ASLR" + atf_set require.progs proccontrol +} + +map_32bit_wo_aslr_body() +{ + atf_check -s exit:0 -x proccontrol -m aslr -s disable \ + $(atf_get_srcdir)/mmap_map_32bit_helper +} + + +atf_init_test_cases() +{ + atf_add_test_case map_32bit_w_aslr + atf_add_test_case map_32bit_wo_aslr +}