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authorMasami Hiramatsu <mhiramat@kernel.org>2019-10-23 13:57:40 +0900
committerShuah Khan <skhan@linuxfoundation.org>2019-11-07 14:52:57 -0700
commit2f3571ea71311bbb2cbb9c3bbefc9c1969a3e889 (patch)
treea81ff2e6826324c13c28ba2727114a625f12f7af /tools/testing/selftests/proc
parentkselftest: Fix NULL INSTALL_PATH for TARGETS runlist (diff)
downloadlinux-dev-2f3571ea71311bbb2cbb9c3bbefc9c1969a3e889.tar.xz
linux-dev-2f3571ea71311bbb2cbb9c3bbefc9c1969a3e889.zip
selftests: proc: Make va_max 1MB
Currently proc-self-map-files-002.c sets va_max (max test address of user virtual address) to 4GB, but it is too big for 32bit arch and 1UL << 32 is overflow on 32bit long. Also since this value should be enough bigger than vm.mmap_min_addr (64KB or 32KB by default), 1MB should be enough. Make va_max 1MB unconditionally. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Diffstat (limited to 'tools/testing/selftests/proc')
-rw-r--r--tools/testing/selftests/proc/proc-self-map-files-002.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/testing/selftests/proc/proc-self-map-files-002.c b/tools/testing/selftests/proc/proc-self-map-files-002.c
index 47b7473dedef..e6aa00a183bc 100644
--- a/tools/testing/selftests/proc/proc-self-map-files-002.c
+++ b/tools/testing/selftests/proc/proc-self-map-files-002.c
@@ -47,7 +47,11 @@ static void fail(const char *fmt, unsigned long a, unsigned long b)
int main(void)
{
const int PAGE_SIZE = sysconf(_SC_PAGESIZE);
- const unsigned long va_max = 1UL << 32;
+ /*
+ * va_max must be enough bigger than vm.mmap_min_addr, which is
+ * 64KB/32KB by default. (depends on CONFIG_LSM_MMAP_MIN_ADDR)
+ */
+ const unsigned long va_max = 1UL << 20;
unsigned long va;
void *p;
int fd;