Jim reported:
UBSAN: Undefined behaviour in arch/x86/events/intel/core.c:3708:12
shift exponent 35 is too large for 32-bit type 'long unsigned int'
The use of 'unsigned long' type obviously is not correct here, make it
'unsigned long long' instead.
Fixes: 2c33645d366d ("perf/x86: Honor the architectural performance monitoring
version")
Reported-by: Jim Cromie <[email protected]>
Signed-off-by: Andrey Ryabinin <[email protected]>
---
arch/x86/events/intel/core.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c
index a6fd4db..5210eaa 100644
--- a/arch/x86/events/intel/core.c
+++ b/arch/x86/events/intel/core.c
@@ -3708,7 +3708,7 @@ __init int intel_pmu_init(void)
c->idxmsk64 |= (1ULL << x86_pmu.num_counters) -
1;
}
c->idxmsk64 &=
- ~(~0UL << (INTEL_PMC_IDX_FIXED +
x86_pmu.num_counters_fixed));
+ ~(~0ULL << (INTEL_PMC_IDX_FIXED +
x86_pmu.num_counters_fixed));
c->weight = hweight64(c->idxmsk64);
}
}
--
2.7.3
