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| author | Jianlin Lv <Jianlin.Lv@arm.com> | 2021-02-03 22:57:02 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2021-02-08 16:25:00 -0300 |
| commit | 900547dd0fd273f03fd10cf5f48824056ddb4fdb (patch) | |
| tree | a75ca5d88739b5fc4848e52456de73c139f4dfe0 /tools/arch | |
| parent | d2e31d7e3f7a06ea5f9cd6a9c773931828641805 (diff) | |
| download | lwn-900547dd0fd273f03fd10cf5f48824056ddb4fdb.tar.gz lwn-900547dd0fd273f03fd10cf5f48824056ddb4fdb.zip | |
perf probe: Add protection to avoid endless loop
if dwarf_offdie() returns NULL, the continue statement forces the next
iteration of the loop without updating the 'off' variable. It will cause
an endless loop in the process of traversing the compile unit. So add
exception protection for looping CUs.
Signed-off-by: Jianlin Lv <Jianlin.Lv@arm.com>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Cc: jianlin.lv@arm.com
Link: http://lore.kernel.org/lkml/20210203145702.1219509-1-Jianlin.Lv@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/arch')
0 files changed, 0 insertions, 0 deletions