Arnaldo,
Could you please consider applying this?
Thanks,
Namhyung
On Tue, 18 Nov 2014 13:30:28 +0900, Namhyung Kim wrote:
> Jiri reported that the commit 96d78059d6d9 ("perf tools: Make vmlinux
> short name more like kallsyms short name") segfaults on perf script.
>
> When processing kernel mmap event, it should access the 'kernel'
> variable as sometimes it cannot find a matching dso from build-id
> table so 'dso' might be invalid.
>
> Reported-by: Jiri Olsa <jo...@redhat.com>
> Tested-by: Jiri Olsa <jo...@redhat.com>
> Signed-off-by: Namhyung Kim <namhy...@kernel.org>
> ---
> tools/perf/util/machine.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
> index 52e94902afb1..85033d80fd6a 100644
> --- a/tools/perf/util/machine.c
> +++ b/tools/perf/util/machine.c
> @@ -1106,8 +1106,8 @@ static int machine__process_kernel_mmap_event(struct
> machine *machine,
> if (__machine__create_kernel_maps(machine, kernel) < 0)
> goto out_problem;
>
> - if (strstr(dso->long_name, "vmlinux"))
> - dso__set_short_name(dso, "[kernel.vmlinux]", false);
> + if (strstr(kernel->long_name, "vmlinux"))
> + dso__set_short_name(kernel, "[kernel.vmlinux]", false);
>
> machine__set_kernel_mmap_len(machine, event);
--
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