Users may want to audit calls to security_create_user_ns() and access user space memory. Also create_user_ns() runs without pagefault_disabled(). Therefore, make bpf_lsm_userns_create() sleepable for mandatory access control policies. Acked-by: Alexei Starovoitov <ast@xxxxxxxxxx> Acked-by: Christian Brauner (Microsoft) <brauner@xxxxxxxxxx> Acked-by: KP Singh <kpsingh@xxxxxxxxxx> Signed-off-by: Frederick Lawler <fred@xxxxxxxxxxxxxx> --- Changes since v4: - None Changes since v3: - None Changes since v2: - Rename create_user_ns hook to userns_create Changes since v1: - None --- kernel/bpf/bpf_lsm.c | 1 + 1 file changed, 1 insertion(+) diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c index fa71d58b7ded..761998fda762 100644 --- a/kernel/bpf/bpf_lsm.c +++ b/kernel/bpf/bpf_lsm.c @@ -335,6 +335,7 @@ BTF_ID(func, bpf_lsm_task_getsecid_obj) BTF_ID(func, bpf_lsm_task_prctl) BTF_ID(func, bpf_lsm_task_setscheduler) BTF_ID(func, bpf_lsm_task_to_inode) +BTF_ID(func, bpf_lsm_userns_create) BTF_SET_END(sleepable_lsm_hooks) bool bpf_lsm_is_sleepable_hook(u32 btf_id) -- 2.30.2
