Messages in this thread | | | Date | Tue, 21 Sep 2021 16:25:58 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH] perf daemon: Avoid msan warnings on send_cmd |
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Em Tue, Sep 21, 2021 at 10:45:45AM -0700, Ian Rogers escreveu: > On Wed, Jun 16, 2021 at 10:55 PM Ian Rogers <irogers@google.com> wrote: > > > As a full union is always sent, ensure all bytes of the union are > > initialized with memset to avoid msan warnings of use of uninitialized > > memory. > > > > An example warning from the daemon test: > > > > Uninitialized bytes in __interceptor_write at offset 71 inside > > [0x7ffd98da6280, 72) > > ==11602==WARNING: MemorySanitizer: use-of-uninitialized-value > > #0 0x5597edccdbe4 in ion tools/lib/perf/lib.c:18:6 > > #1 0x5597edccdbe4 in writen tools/lib/perf/lib.c:47:9 > > #2 0x5597ed221d30 in send_cmd tools/perf/builtin-daemon.c:1376:22 > > #3 0x5597ed21b48c in cmd_daemon tools/perf/builtin-daemon.c > > #4 0x5597ed1d6b67 in run_builtin tools/perf/perf.c:313:11 > > #5 0x5597ed1d6036 in handle_internal_command tools/perf/perf.c:365:8 > > #6 0x5597ed1d6036 in run_argv tools/perf/perf.c:409:2 > > #7 0x5597ed1d6036 in main tools/perf/perf.c:539:3 > > > > SUMMARY: MemorySanitizer: use-of-uninitialized-value > > tools/lib/perf/lib.c:18:6 in ion > > Exiting > > > > Signed-off-by: Ian Rogers <irogers@google.com> > > > > This one appears to still be outstanding. Ping.
Thanks, applied.
- Arnaldo
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