powerpc/bpf: Validate branch ranges
Add checks to ensure that we never emit branch instructions with truncated branch offsets. Suggested-by:Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Tested-by:
Johan Almbladh <johan.almbladh@anyfinetworks.com> Reviewed-by:
Christophe Leroy <christophe.leroy@csgroup.eu> Acked-by:
Song Liu <songliubraving@fb.com> Acked-by:
Johan Almbladh <johan.almbladh@anyfinetworks.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/71d33a6b7603ec1013c9734dd8bdd4ff5e929142.1633464148.git.naveen.n.rao@linux.vnet.ibm.com
parent
4549c3ea