Mischa, Vineet, Looking at ARC PMU driver I've got an impression that its static arc_pmu is left uninitialized, which possibly leads to Oops once registered callbacks are invoked. I don't have neither ARC toolchain nor hardware to test it, so I may be missing something. Below is the fix for it.
Thanks. -- Max ---8<--- From: Max Filippov <[email protected]> Subject: [PATCH] arc: fix use of uninitialized arc_pmu static arc_pmu in the arch/arc/kernel/perf_event.c is not initialized as it's shadowed by a local variable of the same name in the arc_pmu_device_probe. Signed-off-by: Max Filippov <[email protected]> --- arch/arc/kernel/perf_event.c | 1 - 1 file changed, 1 deletion(-) diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c index fd2ec50..57b58f5 100644 --- a/arch/arc/kernel/perf_event.c +++ b/arch/arc/kernel/perf_event.c @@ -266,7 +266,6 @@ static int arc_pmu_add(struct perf_event *event, int flags) static int arc_pmu_device_probe(struct platform_device *pdev) { - struct arc_pmu *arc_pmu; struct arc_reg_pct_build pct_bcr; struct arc_reg_cc_build cc_bcr; int i, j, ret; -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
