perf probe: Fix coredump introduced by probe module option
perf will coredump if the user doesn't give the "-m" option in probe command, this patch fixes it. [root@localhost perf]# ./perf probe --add='PROBE' Segmentation fault (core dumped) Cc: Ingo Molnar <mingo@elte.hu> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1311602888-2389-1-git-send-email-bookjovi@gmail.com Signed-off-by: Jovi Zhang <bookjovi@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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@ -1820,11 +1820,15 @@ static int convert_to_probe_trace_events(struct perf_probe_event *pev,
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ret = -ENOMEM;
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ret = -ENOMEM;
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goto error;
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goto error;
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}
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}
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tev->point.module = strdup(module);
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if (tev->point.module == NULL) {
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if (module) {
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ret = -ENOMEM;
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tev->point.module = strdup(module);
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goto error;
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if (tev->point.module == NULL) {
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ret = -ENOMEM;
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goto error;
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}
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}
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}
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tev->point.offset = pev->point.offset;
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tev->point.offset = pev->point.offset;
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tev->point.retprobe = pev->point.retprobe;
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tev->point.retprobe = pev->point.retprobe;
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tev->nargs = pev->nargs;
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tev->nargs = pev->nargs;
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