[PATCH 4.14 18/31] selftests/x86/protection_keys: Fix syscall NR redefinition warnings

From: Greg Kroah-Hartman
Date: Sun Nov 19 2017 - 10:00:42 EST


4.14-stable review patch. If anyone has any objections, please let me know.

------------------

From: Andy Lutomirski <luto@xxxxxxxxxx>

commit 693cb5580fdb026922363aa103add64b3ecd572e upstream.

On new enough glibc, the pkey syscalls numbers are available. Check
first before defining them to avoid warnings like:

protection_keys.c:198:0: warning: "SYS_pkey_alloc" redefined

Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Borislav Petkov <bpetkov@xxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: http://lkml.kernel.org/r/1fbef53a9e6befb7165ff855fc1a7d4788a191d6.1509794321.git.luto@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
tools/testing/selftests/x86/protection_keys.c | 24 ++++++++++++++++++------
1 file changed, 18 insertions(+), 6 deletions(-)

--- a/tools/testing/selftests/x86/protection_keys.c
+++ b/tools/testing/selftests/x86/protection_keys.c
@@ -189,17 +189,29 @@ void lots_o_noops_around_write(int *writ
#define u64 uint64_t

#ifdef __i386__
-#define SYS_mprotect_key 380
-#define SYS_pkey_alloc 381
-#define SYS_pkey_free 382
+
+#ifndef SYS_mprotect_key
+# define SYS_mprotect_key 380
+#endif
+#ifndef SYS_pkey_alloc
+# define SYS_pkey_alloc 381
+# define SYS_pkey_free 382
+#endif
#define REG_IP_IDX REG_EIP
#define si_pkey_offset 0x14
+
#else
-#define SYS_mprotect_key 329
-#define SYS_pkey_alloc 330
-#define SYS_pkey_free 331
+
+#ifndef SYS_mprotect_key
+# define SYS_mprotect_key 329
+#endif
+#ifndef SYS_pkey_alloc
+# define SYS_pkey_alloc 330
+# define SYS_pkey_free 331
+#endif
#define REG_IP_IDX REG_RIP
#define si_pkey_offset 0x20
+
#endif

void dump_mem(void *dumpme, int len_bytes)