diff options
Diffstat (limited to 'tools/perf/util/thread.c')
| -rw-r--r-- | tools/perf/util/thread.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/tools/perf/util/thread.c b/tools/perf/util/thread.c index aa9c58bbf9d3..9409d32dce04 100644 --- a/tools/perf/util/thread.c +++ b/tools/perf/util/thread.c @@ -294,6 +294,11 @@ int thread__set_comm_from_proc(struct thread *thread) if (!(snprintf(path, sizeof(path), "%d/task/%d/comm", thread__pid(thread), thread__tid(thread)) >= (int)sizeof(path)) && procfs__read_str(path, &comm, &sz) == 0) { + /* sz==0: read got nothing, e.g. race during exit teardown */ + if (sz == 0) { + free(comm); + return -1; + } comm[sz - 1] = '\0'; err = thread__set_comm(thread, comm, 0); } |