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https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git
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39fb393e21
commit 29c77550eef31b0d72a45b49eeab03b8963264e8 upstream. When perf.data is not written cleanly, we would like to process existing data as much as possible (please see f_header.data.size == 0 condition in perf_session__read_header). However, perf.data with partial data may crash perf. Specifically, we see crash in 'perf script' for NULL session->header.env.arch. Fix this by checking session->header.env.arch before using it to determine native_arch. Also split the if condition so it is easier to read. Committer notes: If it is a pipe, we already assume is a native arch, so no need to check session->header.env.arch. Signed-off-by: Song Liu <songliubraving@fb.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: kernel-team@fb.com Cc: stable@vger.kernel.org Link: http://lore.kernel.org/lkml/20211004053238.514936-1-songliubraving@fb.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
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