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perf evsel: Ensure the fallback message is always written to

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[ Upstream commit 24937ee839 ]

The fallback message is unconditionally printed in places like
record__open().

If no fallback is attempted this can lead to printing uninitialized
data, crashes, etc.

Fixes: c0a54341c0 ("perf evsel: Introduce event fallback method")
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Howard Chu <howardchu95@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Ian Rogers 2025-09-18 10:24:15 -07:00 • committed by Greg Kroah-Hartman
commit 8887629b27
1 changed files with 7 additions and 5 deletions
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