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perf machine: Fix __machine__findnew_thread() error path

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When thread__init_map_groups() fails, a new thread should be removed
from the rbtree since it's gonna be freed.  Also update last match cache
only if the function succeeded.

Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1420763892-15535-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2015-01-09 09:38:12 +09:00 committed by Arnaldo Carvalho de Melo
parent c6e5e9fbc3
commit 260d819e3a
1 changed files with 3 additions and 1 deletions
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4
tools/perf/util/machine.c
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@ -389,7 +389,6 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
if (th != NULL) {
rb_link_node(&th->rb_node, parent, p);
rb_insert_color(&th->rb_node, &machine->threads);
machine->last_match = th;
/*
* We have to initialize map_groups separately
@ -400,9 +399,12 @@ static struct thread *__machine__findnew_thread(struct machine *machine,
* leader and that would screwed the rb tree.
*/
if (thread__init_map_groups(th, machine)) {
rb_erase(&th->rb_node, &machine->threads);
thread__delete(th);
return NULL;
}
machine->last_match = th;
}
return th;