Out-of-bounds access in vread_hpet()

From: Richard Weinberger
Date: Tue Jun 10 2014 - 02:36:48 EST


FYI:
________________________________________________________________________________________________________
*** CID 1222081: Out-of-bounds access (ARRAY_VS_SINGLETON)
/arch/x86/vdso/vclock_gettime.c: 38 in vread_hpet()
32 #ifdef CONFIG_HPET_TIMER
33 extern u8 hpet_page
34 __attribute__((visibility("hidden")));
35
36 static notrace cycle_t vread_hpet(void)
37 {
>>> CID 1222081: Out-of-bounds access (ARRAY_VS_SINGLETON)
>>> Using "&hpet_page" as an array. This might corrupt or misinterpret adjacent memory locations.
38 return *(const volatile u32 *)(&hpet_page + HPET_COUNTER);
39 }
40 #endif
41
42 #ifndef BUILD_VDSO32
43

Thanks,
//richard
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