tree 19cbda574e74db418df16baee36af0d850a333ee
parent 89aed473c58e013afc1f2fda0c1b52ea75902f64
author Sami Tolvanen <samitolvanen@google.com> 1567634200 -0700
committer Maciej Żenczykowski <maze@google.com> 1570551665 -0700

ANDROID: arm64: bpf: implement arch_bpf_jit_check_func

Implement arch_bpf_jit_check_func to check that pointers to jited BPF
functions are correctly aligned and point to the BPF JIT region. This
narrows down the attack surface on the stored pointer.

Bug: 140377409
Change-Id: I10c448eda6a8b0bf4c16ee591fc65974696216b9
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
(cherry picked from commit c10baf76063b0503e13e14fcb1652efba6635f1f)