perf probe: Avoid calling freeing routine multiple times for same pointer
authorArnaldo Carvalho de Melo <acme@redhat.com>
Thu, 18 Jul 2019 14:28:37 +0000 (11:28 -0300)
committerArnaldo Carvalho de Melo <acme@redhat.com>
Tue, 23 Jul 2019 12:04:41 +0000 (09:04 -0300)
commitd95daf5accf4a72005daa13fbb1d1bd8709f2861
tree4c6159175f2ed1f7afbaba8cd4aa714d86f03002
parentdf8350ed56a26f502a9636f37faf699a12ee906e
perf probe: Avoid calling freeing routine multiple times for same pointer

When perf_add_probe_events() we call cleanup_perf_probe_events() for the
pev pointer it receives, then, as part of handling this failure the main
'perf probe' goes on and calls cleanup_params() and that will again call
cleanup_perf_probe_events()for the same pointer, so just set nevents to
zero when handling the failure of perf_add_probe_events() to avoid the
double free.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Link: https://lkml.kernel.org/n/tip-x8qgma4g813z96dvtw9w219q@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
tools/perf/builtin-probe.c