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| author | David Ahern <dsahern@gmail.com> | 2013-05-26 02:24:46 +0200 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2013-05-28 15:24:04 +0200 |
| commit | 6ca5f3081f903e2b25e58a061ddad486f846561e (patch) | |
| tree | 10ba490bc80b175c410569fa0c33b745b797c255 /tools/perf/builtin-kvm.c | |
| parent | perf evsel: Fix printing of perf_event_paranoid message (diff) | |
| download | linux-6ca5f3081f903e2b25e58a061ddad486f846561e.tar.xz linux-6ca5f3081f903e2b25e58a061ddad486f846561e.zip | |
perf kvm: Handle realloc failures
Save previous pointer and free on failure.
Signed-off-by: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Runzhen Wang <runzhen@linux.vnet.ibm.com>
Cc: Xiao Guangrong <xiaoguangrong@linux.vnet.ibm.com>
Link: http://lkml.kernel.org/r/1369527896-3650-7-git-send-email-dsahern@gmail.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-kvm.c')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 533501e2b07c..24b78aecc928 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -328,6 +328,7 @@ static int kvm_events_hash_fn(u64 key) static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) { int old_max_vcpu = event->max_vcpu; + void *prev; if (vcpu_id < event->max_vcpu) return true; @@ -335,9 +336,11 @@ static bool kvm_event_expand(struct kvm_event *event, int vcpu_id) while (event->max_vcpu <= vcpu_id) event->max_vcpu += DEFAULT_VCPU_NUM; + prev = event->vcpu; event->vcpu = realloc(event->vcpu, event->max_vcpu * sizeof(*event->vcpu)); if (!event->vcpu) { + free(prev); pr_err("Not enough memory\n"); return false; } |