On 8/15/23 13:58, Stanislav Fomichev wrote:
On 08/15, thinker.li@xxxxxxxxx wrote:
From: Kui-Feng Lee <thinker.li@xxxxxxxxx>
+bpf_prog_run_array_cg_cb(const struct cgroup_bpf *cgrp,
+ enum cgroup_bpf_attach_type atype,
+ const void *ctx, bpf_prog_run_fn run_prog,
+ int retval, u32 *ret_flags,
+ int (*progs_cb)(void *, const struct bpf_prog_array *),
+ void *progs_cb_arg)
{
const struct bpf_prog_array_item *item;
const struct bpf_prog *prog;
const struct bpf_prog_array *array;
struct bpf_run_ctx *old_run_ctx;
struct bpf_cg_run_ctx run_ctx;
+ bool do_sleepable;
u32 func_ret;
+ int err;
+
+ do_sleepable =
+ atype == CGROUP_SETSOCKOPT || atype == CGROUP_GETSOCKOPT;
run_ctx.retval = retval;
migrate_disable();
- rcu_read_lock();
+ if (do_sleepable) {
+ might_fault();
+ rcu_read_lock_trace();
+ } else
+ rcu_read_lock();
nit: wrap 'else' branch with {} braces as well
Got it!
