Re: [PATCH v2] KVM: s390: selftest: memop: Fix undefined behavior

On 1/11/24 10:48, Nina Schoetterl-Glausch wrote:

If an integer's type has x bits, shifting the integer left by x or more is undefined behavior. This can happen in the rotate function when attempting to do a rotation of the whole value by 0.

Fixes: 0dd714bfd200 ("KVM: s390: selftest: memop: Add cmpxchg tests") Signed-off-by: Nina Schoetterl-Glausch nsg@linux.ibm.com

Acked-by: Janosch Frank frankja@linux.ibm.com