Message ID | 20190627032532.18374-3-c0d1n61at3@gmail.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show |
Series | [Linux-kernel-mentees,v2] drm/amdkfd: Fix undefined behavior in bit shift | expand |
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h index dc067ed0b72d..ae5669272303 100644 --- a/include/uapi/linux/kfd_ioctl.h +++ b/include/uapi/linux/kfd_ioctl.h @@ -339,7 +339,7 @@ struct kfd_ioctl_acquire_vm_args { #define KFD_IOC_ALLOC_MEM_FLAGS_USERPTR (1 << 2) #define KFD_IOC_ALLOC_MEM_FLAGS_DOORBELL (1 << 3) /* Allocation flags: attributes/access options */ -#define KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE (1 << 31) +#define KFD_IOC_ALLOC_MEM_FLAGS_WRITABLE (1U << 31) #define KFD_IOC_ALLOC_MEM_FLAGS_EXECUTABLE (1 << 30) #define KFD_IOC_ALLOC_MEM_FLAGS_PUBLIC (1 << 29) #define KFD_IOC_ALLOC_MEM_FLAGS_NO_SUBSTITUTE (1 << 28)
Shifting signed 32-bit value by 31 bits is undefined. Changing most significant bit to unsigned. Changes included in v2: - use subsystem specific subject lines - CC required mailing lists Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com> --- include/uapi/linux/kfd_ioctl.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)