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authorAlexey Dobriyan <adobriyan@gmail.com>2023-10-27 17:21:03 +0300
committerAndrew Morton <akpm@linux-foundation.org>2023-11-01 22:46:59 +0300
commit20e34aa7e08dbac5d7f757fea81fae8df462aa42 (patch)
treea4474064e06009b22f73034553107dd40d09159d /tools/testing
parent639931020e1a70308a5c71f4702443429cb6899c (diff)
downloadlinux-20e34aa7e08dbac5d7f757fea81fae8df462aa42.tar.xz
proc: fix proc-empty-vm test with vsyscall
* fix embarassing /proc/*/smaps test bug due to a typo in variable name it tested only the first line of the output if vsyscall is enabled: ffffffffff600000-ffffffffff601000 r-xp ... so test passed but tested only VMA location and permissions. * add "KSM" entry, unnoticed because (1) * swap "r-xp" and "--xp" vsyscall test strings, also unnoticed because (1) Link: https://lkml.kernel.org/r/76f42cce-b1ab-45ec-b6b2-4c64f0dccb90@p183 Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Tested-by: Swarup Laxman Kotikalapudi<swarupkotikalapudi@mail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'tools/testing')
-rw-r--r--tools/testing/selftests/proc/proc-empty-vm.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/tools/testing/selftests/proc/proc-empty-vm.c b/tools/testing/selftests/proc/proc-empty-vm.c
index 171d46a1ac27..1cbdfe8a140e 100644
--- a/tools/testing/selftests/proc/proc-empty-vm.c
+++ b/tools/testing/selftests/proc/proc-empty-vm.c
@@ -60,7 +60,7 @@ static const char proc_pid_maps_vsyscall_2[] =
static const char proc_pid_smaps_vsyscall_0[] = "";
static const char proc_pid_smaps_vsyscall_1[] =
-"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"
+"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n"
"Size: 4 kB\n"
"KernelPageSize: 4 kB\n"
"MMUPageSize: 4 kB\n"
@@ -73,6 +73,7 @@ static const char proc_pid_smaps_vsyscall_1[] =
"Private_Dirty: 0 kB\n"
"Referenced: 0 kB\n"
"Anonymous: 0 kB\n"
+"KSM: 0 kB\n"
"LazyFree: 0 kB\n"
"AnonHugePages: 0 kB\n"
"ShmemPmdMapped: 0 kB\n"
@@ -90,7 +91,7 @@ static const char proc_pid_smaps_vsyscall_1[] =
;
static const char proc_pid_smaps_vsyscall_2[] =
-"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n"
+"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"
"Size: 4 kB\n"
"KernelPageSize: 4 kB\n"
"MMUPageSize: 4 kB\n"
@@ -103,6 +104,7 @@ static const char proc_pid_smaps_vsyscall_2[] =
"Private_Dirty: 0 kB\n"
"Referenced: 0 kB\n"
"Anonymous: 0 kB\n"
+"KSM: 0 kB\n"
"LazyFree: 0 kB\n"
"AnonHugePages: 0 kB\n"
"ShmemPmdMapped: 0 kB\n"
@@ -244,10 +246,10 @@ static int test_proc_pid_smaps(pid_t pid)
if (g_vsyscall == 0) {
assert(rv == 0);
} else {
- size_t len = strlen(g_proc_pid_maps_vsyscall);
+ size_t len = strlen(g_proc_pid_smaps_vsyscall);
/* TODO "ProtectionKey:" */
assert(rv > len);
- assert(memcmp(buf, g_proc_pid_maps_vsyscall, len) == 0);
+ assert(memcmp(buf, g_proc_pid_smaps_vsyscall, len) == 0);
}
return EXIT_SUCCESS;
}