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I just hit a segfault when doing `perf report -g srcline`.
Valgrind pointed me at this code as the culprit:
==8359== Invalid read of size 8
==8359== at 0x3096D9: map__rip_2objdump (map.c:430)
==8359== by 0x2FC1A3: match_chain_srcline (callchain.c:645)
==8359== by 0x2FC1A3: match_chain (callchain.c:700)
==8359== by 0x2FC1A3: append_chain (callchain.c:895)
==8359== by 0x2FC1A3: append_chain_children (callchain.c:846)
==8359== by 0x2FF719: callchain_append (callchain.c:944)
==8359== by 0x2FF719: hist_entry__append_callchain (callchain.c:1058)
==8359== by 0x32FA06: iter_add_single_cumulative_entry (hist.c:908)
==8359== by 0x33195C: hist_entry_iter__add (hist.c:1050)
==8359== by 0x258F65: process_sample_event (builtin-report.c:204)
==8359== by 0x30D60C: perf_session__deliver_event (session.c:1310)
==8359== by 0x30D60C: ordered_events__deliver_event (session.c:119)
==8359== by 0x310D12: __ordered_events__flush (ordered-events.c:210)
==8359== by 0x310D12: ordered_events__flush.part.3 (ordered-events.c:277)
==8359== by 0x30DD3C: perf_session__process_user_event (session.c:1349)
==8359== by 0x30DD3C: perf_session__process_event (session.c:1475)
==8359== by 0x30FC3C: __perf_session__process_events (session.c:1867)
==8359== by 0x30FC3C: perf_session__process_events (session.c:1921)
==8359== by 0x25A985: __cmd_report (builtin-report.c:575)
==8359== by 0x25A985: cmd_report (builtin-report.c:1054)
==8359== by 0x2B9A80: run_builtin (perf.c:296)
==8359== Address 0x70 is not stack'd, malloc'd or (recently) free'd
This patch fixes the issue.
Signed-off-by: Milian Wolff <milian.wolff@kdab.com>
[ Remove dependency from another change ]
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yao Jin <yao.jin@linux.intel.com>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170524062129.32529-2-namhyung@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
7d4df089d7