Commit-ID: 6ca5f3081f903e2b25e58a061ddad486f846561e Gitweb: http://git.kernel.org/tip/6ca5f3081f903e2b25e58a061ddad486f846561e Author: David Ahern <[email protected]> AuthorDate: Sat, 25 May 2013 18:24:46 -0600 Committer: Arnaldo Carvalho de Melo <[email protected]> CommitDate: Tue, 28 May 2013 16:24:04 +0300
perf kvm: Handle realloc failures Save previous pointer and free on failure. Signed-off-by: David Ahern <[email protected]> Cc: Frederic Weisbecker <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Jiri Olsa <[email protected]> Cc: Namhyung Kim <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Runzhen Wang <[email protected]> Cc: Xiao Guangrong <[email protected]> Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Arnaldo Carvalho de Melo <[email protected]> --- tools/perf/builtin-kvm.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index 533501e..24b78ae 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; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
