perf/urgent fixes:

- Fix link time error with sample_reg_masks on non x86 (Stephane Eranian)
 
 - Fix potential array out of bounds access (Wang Nan)
 
 - Fix Intel PT instruction decoder dependency problem (Wang Nan)
 
 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
 -----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
 iQIcBAABAgAGBQJV5c4GAAoJENZQFvNTUqpAwEAP/0wOxyXgCdkzYHFL6mCZhqiE
 YvplpsZmAC/ew9ticgJeClAz3EVj13jTbq+5MyQ7bP90c3zNrNQ/i6FO9+dixo3G
 mz1OrRrJ663M+wAavc0uw3ZgLtx0SLZ1EEtNb2u657MMQIOPlXJ610tD79Nz7PHY
 qy/nwd8mc2CvRFRy0JfGEWtMsVlK+zUsYMeVw66NCJmNaWsgpsdY7M/CLwUcikob
 SDXox037vN10ifxRzE++VmOri2FNr2G8l8uSxoUal7/QTgTk1ELJUsG0hXw3JkGd
 5WhMjuCmNnMWkjMmQiEpZBsESrUV6u+ex6GcG7OU0zd6fTqSJTIJCm+BBwHuTKXS
 4vzUGc910VUnyZl9qUlz9wSn3xfHoLHde2J1dKiK1yf97sPjiYbd0vmNlsengSjn
 iDolHh/IWL8gnSCIwdDNw3wLthXYXjTAQnWXlD2r4DyceNb5vNpST6T8RIPB+bU9
 MYoBmZV273OSxwfmaH2lTDmnzVnUlErPVM1xnVGgVbWJPRJtuPyiiREKMcJp0h5S
 DqIUsoFrtp9/4U/MtKdK+LzXti5OqufAZThEyZ1/0r378A/L9BazjgPSCzQ+AYTN
 iwIWtumEz2wUSr5kcfoDWwzKvvXLj+DU2AFSQ1VHXPMBqPX+3Vyk5IgMnjcj17Qx
 6Cq4KVpcWq+y1XPv5roy
 =+Rg2
 -----END PGP SIGNATURE-----

Merge tag 'perf-urgent-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent

Pull perf/urgent fixes from Arnaldo Carvalho de Melo:

  - Fix link time error with sample_reg_masks on non-x86. (Stephane Eranian)

  - Fix potential array out of bounds access. (Wang Nan)

  - Fix Intel PT instruction decoder dependency problem. (Wang Nan)

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

tools/perf/arch/sh/util/dwarf-regs.c

@@ -51,5 +51,5 @@ const char *sh_regs_table[SH_MAX_REGS] = {
 /* Return architecture dependent register string (for kprobe-tracer) */
 const char *get_arch_regstr(unsigned int n)
 {
-	return (n <= SH_MAX_REGS) ? sh_regs_table[n] : NULL;
+	return (n < SH_MAX_REGS) ? sh_regs_table[n] : NULL;
 }

tools/perf/arch/sparc/util/dwarf-regs.c

@@ -39,5 +39,5 @@ const char *sparc_regs_table[SPARC_MAX_REGS] = {
  */
 const char *get_arch_regstr(unsigned int n)
 {
-	return (n <= SPARC_MAX_REGS) ? sparc_regs_table[n] : NULL;
+	return (n < SPARC_MAX_REGS) ? sparc_regs_table[n] : NULL;
 }

tools/perf/arch/x86/util/dwarf-regs.c

@@ -71,5 +71,5 @@ const char *x86_64_regs_table[X86_64_MAX_REGS] = {
 /* Return architecture dependent register string (for kprobe-tracer) */
 const char *get_arch_regstr(unsigned int n)
 {
-	return (n <= ARCH_MAX_REGS) ? arch_regs_table[n] : NULL;
+	return (n < ARCH_MAX_REGS) ? arch_regs_table[n] : NULL;
 }

tools/perf/arch/x86/util/perf_regs.c

@@ -1,30 +1,28 @@
 #include "../../perf.h"
 #include "../../util/perf_regs.h"
 
-#define REG(n, b) { .name = #n, .mask = 1ULL << (b) }
-#define REG_END { .name = NULL }
 const struct sample_reg sample_reg_masks[] = {
-	REG(AX, PERF_REG_X86_AX),
-	REG(BX, PERF_REG_X86_BX),
-	REG(CX, PERF_REG_X86_CX),
-	REG(DX, PERF_REG_X86_DX),
-	REG(SI, PERF_REG_X86_SI),
-	REG(DI, PERF_REG_X86_DI),
-	REG(BP, PERF_REG_X86_BP),
-	REG(SP, PERF_REG_X86_SP),
-	REG(IP, PERF_REG_X86_IP),
-	REG(FLAGS, PERF_REG_X86_FLAGS),
-	REG(CS, PERF_REG_X86_CS),
-	REG(SS, PERF_REG_X86_SS),
+	SMPL_REG(AX, PERF_REG_X86_AX),
+	SMPL_REG(BX, PERF_REG_X86_BX),
+	SMPL_REG(CX, PERF_REG_X86_CX),
+	SMPL_REG(DX, PERF_REG_X86_DX),
+	SMPL_REG(SI, PERF_REG_X86_SI),
+	SMPL_REG(DI, PERF_REG_X86_DI),
+	SMPL_REG(BP, PERF_REG_X86_BP),
+	SMPL_REG(SP, PERF_REG_X86_SP),
+	SMPL_REG(IP, PERF_REG_X86_IP),
+	SMPL_REG(FLAGS, PERF_REG_X86_FLAGS),
+	SMPL_REG(CS, PERF_REG_X86_CS),
+	SMPL_REG(SS, PERF_REG_X86_SS),
 #ifdef HAVE_ARCH_X86_64_SUPPORT
-	REG(R8, PERF_REG_X86_R8),
-	REG(R9, PERF_REG_X86_R9),
-	REG(R10, PERF_REG_X86_R10),
-	REG(R11, PERF_REG_X86_R11),
-	REG(R12, PERF_REG_X86_R12),
-	REG(R13, PERF_REG_X86_R13),
-	REG(R14, PERF_REG_X86_R14),
-	REG(R15, PERF_REG_X86_R15),
+	SMPL_REG(R8, PERF_REG_X86_R8),
+	SMPL_REG(R9, PERF_REG_X86_R9),
+	SMPL_REG(R10, PERF_REG_X86_R10),
+	SMPL_REG(R11, PERF_REG_X86_R11),
+	SMPL_REG(R12, PERF_REG_X86_R12),
+	SMPL_REG(R13, PERF_REG_X86_R13),
+	SMPL_REG(R14, PERF_REG_X86_R14),
+	SMPL_REG(R15, PERF_REG_X86_R15),
 #endif
-	REG_END
+	SMPL_REG_END
 };

tools/perf/util/intel-pt-decoder/Build

@@ -4,6 +4,7 @@ inat_tables_script = util/intel-pt-decoder/gen-insn-attr-x86.awk
 inat_tables_maps = util/intel-pt-decoder/x86-opcode-map.txt
 
 $(OUTPUT)util/intel-pt-decoder/inat-tables.c: $(inat_tables_script) $(inat_tables_maps)
+	$(call rule_mkdir)
 	@$(call echo-cmd,gen)$(AWK) -f $(inat_tables_script) $(inat_tables_maps) > $@ || rm -f $@
 
 $(OUTPUT)util/intel-pt-decoder/intel-pt-insn-decoder.o: util/intel-pt-decoder/inat.c $(OUTPUT)util/intel-pt-decoder/inat-tables.c

tools/perf/util/perf_regs.c

@@ -2,6 +2,10 @@
 #include "perf_regs.h"
 #include "event.h"
 
+const struct sample_reg __weak sample_reg_masks[] = {
+	SMPL_REG_END
+};
+
 int perf_reg_value(u64 *valp, struct regs_dump *regs, int id)
 {
 	int i, idx = 0;

tools/perf/util/perf_regs.h

@@ -9,6 +9,8 @@ struct sample_reg {
 	const char *name;
 	uint64_t mask;
 };
+#define SMPL_REG(n, b) { .name = #n, .mask = 1ULL << (b) }
+#define SMPL_REG_END { .name = NULL }
 
 extern const struct sample_reg sample_reg_masks[];