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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>
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@ -60,7 +60,7 @@ static const char proc_pid_maps_vsyscall_2[] =
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static const char proc_pid_smaps_vsyscall_0[] = "";
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static const char proc_pid_smaps_vsyscall_1[] =
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"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"
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"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n"
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"Size: 4 kB\n"
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"KernelPageSize: 4 kB\n"
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"MMUPageSize: 4 kB\n"
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@ -73,6 +73,7 @@ static const char proc_pid_smaps_vsyscall_1[] =
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"Private_Dirty: 0 kB\n"
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"Referenced: 0 kB\n"
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"Anonymous: 0 kB\n"
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"KSM: 0 kB\n"
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"LazyFree: 0 kB\n"
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"AnonHugePages: 0 kB\n"
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"ShmemPmdMapped: 0 kB\n"
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@ -90,7 +91,7 @@ static const char proc_pid_smaps_vsyscall_1[] =
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;
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static const char proc_pid_smaps_vsyscall_2[] =
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"ffffffffff600000-ffffffffff601000 --xp 00000000 00:00 0 [vsyscall]\n"
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"ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]\n"
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"Size: 4 kB\n"
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"KernelPageSize: 4 kB\n"
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"MMUPageSize: 4 kB\n"
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@ -103,6 +104,7 @@ static const char proc_pid_smaps_vsyscall_2[] =
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"Private_Dirty: 0 kB\n"
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"Referenced: 0 kB\n"
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"Anonymous: 0 kB\n"
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"KSM: 0 kB\n"
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"LazyFree: 0 kB\n"
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"AnonHugePages: 0 kB\n"
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"ShmemPmdMapped: 0 kB\n"
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@ -244,10 +246,10 @@ static int test_proc_pid_smaps(pid_t pid)
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if (g_vsyscall == 0) {
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assert(rv == 0);
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} else {
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size_t len = strlen(g_proc_pid_maps_vsyscall);
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size_t len = strlen(g_proc_pid_smaps_vsyscall);
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/* TODO "ProtectionKey:" */
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assert(rv > len);
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assert(memcmp(buf, g_proc_pid_maps_vsyscall, len) == 0);
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assert(memcmp(buf, g_proc_pid_smaps_vsyscall, len) == 0);
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}
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return EXIT_SUCCESS;
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}
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