Merge branch 'bpf-add-bpf_stream_print_stack-kfunc'

Merge branch 'bpf-add-bpf_stream_print_stack-kfunc'

Emil Tsalapatis says:

====================
bpf: Add bpf_stream_print_stack kfunc

Add a new bpf_stream_print_stack kfunc for printing a BPF program stack
into a BPF stream. Update the verifier to allow the new kfunc to be
called with BPF spinlocks held, along with bpf_stream_vprintk.

Patchset spun out of the larger libarena + ASAN patchset.
(https://lore.kernel.org/bpf/20260127181610.86376-1-emil@etsalapatis.com/)

Changeset:
	- Update bpf_stream_print_stack to take stream_id arg (Kumar)
	- Added selftest for the bpf_stream_print_stack
	- Add selftest for calling the streams kfuncs under lock

v2->v1: (https://lore.kernel.org/bpf/20260202193311.446717-1-emil@etsalapatis.com/)
	- Updated Signed-off-by to be consistent with past submissions
	- Updated From email to be consistent with Signed-off-by

Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Signed-off-by: Emil Tsalapatis <emil@etsalapatis.com>
====================

Link: https://patch.msgid.link/20260203180424.14057-1-emil@etsalapatis.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>