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authorZecheng Li <zecheng@google.com>2025-08-25 19:54:03 +0000
committerArnaldo Carvalho de Melo <acme@redhat.com>2025-09-03 15:45:50 -0300
commit414bf79debdce9bb682b4f23f87ea97568afa67b (patch)
tree137c4589e164144edf7bc29ab16e6e35c229ff0c /tools/perf/util/python.c
parent9105df0185ea3a89e6651985e829897a8d3a94ae (diff)
perf dwarf-aux: Use signed variable types in match_var_offset
match_var_offset() compares address offsets to determine if an access falls within a variable's bounds. The offsets involved for those relative to base registers from DW_OP_breg can be negative. The current implementation uses unsigned types (u64) for these offsets, which rejects almost all negative values. Change the signature of match_var_offset() to use signed types (s64). This ensures correct behavior when addr_offset or addr_type are negative. Reviewed-by: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Zecheng Li <zecheng@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Xu Liu <xliuprof@google.com> Link: https://lore.kernel.org/r/20250825195412.223077-2-zecheng@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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