Merge branch 'bpf-fix-conditions-when-timer-wq-can-be-called'

Alexei Starovoitov says:

====================
bpf: Fix conditions when timer/wq can be called

From: Alexei Starovoitov <ast@kernel.org>

v2->v3:
- Add missing refcount_put
- Detect recursion of indiviual async_cb
v2: https://lore.kernel.org/bpf/20260204040834.22263-4-alexei.starovoitov@gmail.com/

v1->v2:
- Add a recursion check
v1: https://lore.kernel.org/bpf/20260204030927.171-1-alexei.starovoitov@gmail.com/
====================

Link: https://patch.msgid.link/20260204055147.54960-1-alexei.starovoitov@gmail.com
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>