diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/sys/kern/kern_copyin.c | 59 |
1 files changed, 47 insertions, 12 deletions
diff --git a/tests/sys/kern/kern_copyin.c b/tests/sys/kern/kern_copyin.c index a8cf0422eec5..ed4225361ec3 100644 --- a/tests/sys/kern/kern_copyin.c +++ b/tests/sys/kern/kern_copyin.c @@ -1,5 +1,5 @@ /*- - * Copyright (c) 2015 The FreeBSD Foundation + * Copyright (c) 2015, 2020 The FreeBSD Foundation * All rights reserved. * * This software was developed by Konstantin Belousov <kib@FreeBSD.org> @@ -31,6 +31,8 @@ __FBSDID("$FreeBSD$"); #include <sys/param.h> +#include <sys/exec.h> +#include <sys/sysctl.h> #include <errno.h> #include <limits.h> #include <stdio.h> @@ -52,21 +54,54 @@ copyin_checker(uintptr_t uaddr, size_t len) return (ret == -1 ? errno : 0); } +#ifdef __amd64__ +static uintptr_t +get_maxuser_address(void) +{ + size_t len; + uintptr_t psstrings; + int error, mib[4]; + + mib[0] = CTL_KERN; + mib[1] = KERN_PROC; + mib[2] = KERN_PROC_PS_STRINGS; + mib[3] = getpid(); + error = sysctl(mib, nitems(mib), &psstrings, &len, NULL, 0); + if (error != 0) + return (0); + + if (psstrings == PS_STRINGS_LA57) + return (VM_MAXUSER_ADDRESS_LA57); + if (psstrings == PS_STRINGS_LA48) + return (VM_MAXUSER_ADDRESS_LA48); + /* AMD LA48 with clipped UVA */ + if (psstrings == PS_STRINGS_LA48 - PAGE_SIZE) + return (VM_MAXUSER_ADDRESS_LA48 - PAGE_SIZE); + return (0); +} +#endif + #define FMAX ULONG_MAX ATF_TC_WITHOUT_HEAD(kern_copyin); ATF_TC_BODY(kern_copyin, tc) { char template[] = "copyin.XXXXXX"; + uintptr_t maxuser; -#ifdef __mips__ +#if defined(__mips__) /* * MIPS has different VM layout: the UVA map on mips ends the * highest mapped entry at the VM_MAXUSER_ADDRESS - PAGE_SIZE, * while all other arches map either stack or shared page up * to the VM_MAXUSER_ADDRESS. */ - atf_tc_skip("Platform is not supported."); + maxuser = VM_MAXUSER_ADDRESS - PAGE_SIZE; +#elif defined(__amd64__) + maxuser = get_maxuser_address(); + ATF_REQUIRE(maxuser != 0); +#else + maxuser = VM_MAXUSER_ADDRESS; #endif scratch_file = mkstemp(template); @@ -74,15 +109,15 @@ ATF_TC_BODY(kern_copyin, tc) unlink(template); ATF_CHECK(copyin_checker(0, 0) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 9) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 10) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 10, 11) == EFAULT); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS - 1, 1) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 0) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 1) == EFAULT); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS, 2) == EFAULT); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 0) == 0); - ATF_CHECK(copyin_checker(VM_MAXUSER_ADDRESS + 1, 2) == EFAULT); + ATF_CHECK(copyin_checker(maxuser - 10, 9) == 0); + ATF_CHECK(copyin_checker(maxuser - 10, 10) == 0); + ATF_CHECK(copyin_checker(maxuser - 10, 11) == EFAULT); + ATF_CHECK(copyin_checker(maxuser - 1, 1) == 0); + ATF_CHECK(copyin_checker(maxuser, 0) == 0); + ATF_CHECK(copyin_checker(maxuser, 1) == EFAULT); + ATF_CHECK(copyin_checker(maxuser, 2) == EFAULT); + ATF_CHECK(copyin_checker(maxuser + 1, 0) == 0); + ATF_CHECK(copyin_checker(maxuser + 1, 2) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 9) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 10) == EFAULT); ATF_CHECK(copyin_checker(FMAX - 10, 11) == EFAULT); |