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Mark-PK Tsai authored
If we disable the compiler's auto-initialization feature, if -fplugin-arg-structleak_plugin-byref or -ftrivial-auto-var-init=pattern are disabled, arch_hw_breakpoint may be used before initialization after: 9a4903dd ("perf/hw_breakpoint: Split attribute parse and commit") On our ARM platform, the struct step_ctrl in arch_hw_breakpoint, which used to be zero-initialized by kzalloc(), may be used in arch_install_hw_breakpoint() without initialization. Signed-off-by:
Mark-PK Tsai <mark-pk.tsai@mediatek.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alix Wu <alix.wu@mediatek.com> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: YJ Chiang <yj.chiang@mediatek.com> Link: https://lkml.kernel.org/r/20190906060115.9460-1-mark-pk.tsai@mediatek.com [ Minor edits. ] Signed-off-by:
Ingo Molnar <mingo@kernel.org>
310aa0a2