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perf-record: Check correct pid when forking

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When forking the child to be traced, we should check the correct
return value from fork() and not a local variable which is otherwise
unused.

Signed-off-by: Borislav Petkov <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Arnaldo Carvalho de Melo <[email protected]>
Cc: Paul Mackerras <[email protected]>
Cc: Tom Zanussi <[email protected]>
Cc: Stephane Eranian <[email protected]>
LKML-Reference: <[email protected]>
Signed-off-by: Frederic Weisbecker <[email protected]>
This commit is contained in:
Borislav Petkov 2010-05-31 23:18:18 +02:00 • committed by Frederic Weisbecker
commit 2fb750e825
1 changed files with 1 additions and 2 deletions
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3
tools/perf/builtin-record.c
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@ -503,7 +503,6 @@ static int __cmd_record(int argc, const char **argv)
{
int i, counter;
struct stat st;
pid_t pid = 0;
int flags;
int err;
unsigned long waking = 0;
@ -572,7 +571,7 @@ static int __cmd_record(int argc, const char **argv)
if (forks) {
child_pid = fork();
if (pid < 0) {
if (child_pid < 0) {
perror("failed to fork");
exit(-1);
}