linux-kernel - [GIT PULL] rtla: Updates for 5.20/6.0

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Date:   Wed, 3 Aug 2022 10:49:36 -0400
From:   Steven Rostedt <rostedt@...dmis.org>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Andreas Schwab <schwab@...e.de>,
        Daniel Bristot de Oliveira <bristot@...nel.org>,
        jianchunfu <jianchunfu@...s.chinamobile.com>
Subject: [GIT PULL] rtla: Updates for 5.20/6.0


Linus,

Real Time Analysis Tool updates for 5.20 / 6.0

Changes to RTLA:

 - Fix a double free

 - Define syscall numbers for RISCV

 - Fix Makefile when called from -C tools

 - Use calloc() to check for memory allocation failures


Please pull the latest trace-rtla-v5.20 tree, which can be found at:


  git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-rtla-v5.20

Tag SHA1: ae546e8855f305db853d17a6509e267286dc5b2d
Head SHA1: dd0b15bda48f59eb7dee17fab91eda8389f0e98d


Andreas Schwab (2):
      rtla: Fix double free
      rtla: Define syscall numbers for riscv

Daniel Bristot de Oliveira (1):
      rtla: Fix Makefile when called from -C tools/

jianchunfu (1):
      rtla/utils: Use calloc and check the potential memory allocation failure

----
 tools/tracing/rtla/Makefile    | 2 +-
 tools/tracing/rtla/src/trace.c | 9 +++++++--
 tools/tracing/rtla/src/utils.c | 7 ++++---
 3 files changed, 12 insertions(+), 6 deletions(-)
---------------------------
diff --git a/tools/tracing/rtla/Makefile b/tools/tracing/rtla/Makefile
index 3822f4ea5f49..1bea2d16d4c1 100644
--- a/tools/tracing/rtla/Makefile
+++ b/tools/tracing/rtla/Makefile
@@ -1,6 +1,6 @@
 NAME	:=	rtla
 # Follow the kernel version
-VERSION :=	$(shell cat VERSION 2> /dev/null || make -sC ../../.. kernelversion)
+VERSION :=	$(shell cat VERSION 2> /dev/null || make -sC ../../.. kernelversion | grep -v make)
 
 # From libtracefs:
 # Makefiles suck: This macro sets a default value of $(2) for the
diff --git a/tools/tracing/rtla/src/trace.c b/tools/tracing/rtla/src/trace.c
index 5784c9f9e570..e1ba6d9f4265 100644
--- a/tools/tracing/rtla/src/trace.c
+++ b/tools/tracing/rtla/src/trace.c
@@ -134,13 +134,18 @@ void trace_instance_destroy(struct trace_instance *trace)
 	if (trace->inst) {
 		disable_tracer(trace->inst);
 		destroy_instance(trace->inst);
+		trace->inst = NULL;
 	}
 
-	if (trace->seq)
+	if (trace->seq) {
 		free(trace->seq);
+		trace->seq = NULL;
+	}
 
-	if (trace->tep)
+	if (trace->tep) {
 		tep_free(trace->tep);
+		trace->tep = NULL;
+	}
 }
 
 /*
diff --git a/tools/tracing/rtla/src/utils.c b/tools/tracing/rtla/src/utils.c
index 5352167a1e75..663a047f794d 100644
--- a/tools/tracing/rtla/src/utils.c
+++ b/tools/tracing/rtla/src/utils.c
@@ -106,8 +106,9 @@ int parse_cpu_list(char *cpu_list, char **monitored_cpus)
 
 	nr_cpus = sysconf(_SC_NPROCESSORS_CONF);
 
-	mon_cpus = malloc(nr_cpus * sizeof(char));
-	memset(mon_cpus, 0, (nr_cpus * sizeof(char)));
+	mon_cpus = calloc(nr_cpus, sizeof(char));
+	if (!mon_cpus)
+		goto err;
 
 	for (p = cpu_list; *p; ) {
 		cpu = atoi(p);
@@ -224,7 +225,7 @@ long parse_ns_duration(char *val)
 #elif __arm__
 # define __NR_sched_setattr	380
 # define __NR_sched_getattr	381
-#elif __aarch64__
+#elif __aarch64__ || __riscv
 # define __NR_sched_setattr	274
 # define __NR_sched_getattr	275
 #elif __powerpc__