[PATCH v1 0/2] Build ID mmap related fixes
From: Ian Rogers
Date: Fri Aug 22 2025 - 20:00:50 EST
Now that build ID mmap is the default I was seeing hangs during event
synthesis in the perftool-testsuite_report. The hang was happening due
to data pages giving block device file paths and opening the file to
read a build ID was blocking in the open. In investigating this issue
a bug in symbol-minimal was found. These 2 patches fix both issues. As
the issues are present in v6.17-rc2, I think it would be worthwhile to
add the patches as v6.17 fixes.
Ian Rogers (2):
perf symbol-minimal: Fix ehdr reading in filename__read_build_id
perf symbol: Add blocking argument to filename__read_build_id
tools/perf/bench/inject-buildid.c | 2 +-
tools/perf/builtin-buildid-cache.c | 8 ++--
tools/perf/builtin-inject.c | 4 +-
tools/perf/tests/sdt.c | 2 +-
tools/perf/util/build-id.c | 4 +-
tools/perf/util/debuginfo.c | 8 +++-
tools/perf/util/dsos.c | 4 +-
tools/perf/util/symbol-elf.c | 9 +++--
tools/perf/util/symbol-minimal.c | 59 +++++++++++++++---------------
tools/perf/util/symbol.c | 8 ++--
tools/perf/util/symbol.h | 2 +-
tools/perf/util/synthetic-events.c | 2 +-
12 files changed, 58 insertions(+), 54 deletions(-)
--
2.51.0.rc2.233.g662b1ed5c5-goog