Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2022-10-03

We've added 10 non-merge commits during the last 23 day(s) which contain
a total of 14 files changed, 130 insertions(+), 69 deletions(-).

The main changes are:

1) Fix dynptr helper API to gate behind CAP_BPF given it was not intended
   for unprivileged BPF programs, from Kumar Kartikeya Dwivedi.

2) Fix need_wakeup flag inheritance from umem buffer pool for shared xsk
   sockets, from Jalal Mostafa.

3) Fix truncated last_member_type_id in btf_struct_resolve() which had a
   wrong storage type, from Lorenz Bauer.

4) Fix xsk back-pressure mechanism on tx when amount of produced
   descriptors to CQ is lower than what was grabbed from xsk tx ring,
   from Maciej Fijalkowski.

5) Fix wrong cgroup attach flags being displayed to effective progs,
   from Pu Lehui.

* https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  xsk: Inherit need_wakeup flag for shared sockets
  bpf: Gate dynptr API behind CAP_BPF
  selftests/bpf: Adapt cgroup effective query uapi change
  bpftool: Fix wrong cgroup attach flags being assigned to effective progs
  bpf, cgroup: Reject prog_attach_flags array when effective query
  bpf: Ensure correct locking around vulnerable function find_vpid()
  bpf: btf: fix truncated last_member_type_id in btf_struct_resolve
  selftests/xsk: Add missing close() on netns fd
  xsk: Fix backpressure mechanism on Tx
  MAINTAINERS: Add include/linux/tnum.h to BPF CORE
====================

Link: https://lore.kernel.org/r/20221003201957.13149-1-daniel@iogearbox.net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 5 insertions, 2 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 59a217ca2dfd..4eff7fc7ae58 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -1233,7 +1233,7 @@ enum {
 
 /* Query effective (directly attached + inherited from ancestor cgroups)
  * programs that will be executed for events within a cgroup.
- * attach_flags with this flag are returned only for directly attached programs.
+ * attach_flags with this flag are always returned 0.
  */
 #define BPF_F_QUERY_EFFECTIVE	(1U << 0)
 
@@ -1432,7 +1432,10 @@ union bpf_attr {
 		__u32		attach_flags;
 		__aligned_u64	prog_ids;
 		__u32		prog_cnt;
-		__aligned_u64	prog_attach_flags; /* output: per-program attach_flags */
+		/* output: per-program attach_flags.
+		 * not allowed to be set during effective query.
+		 */
+		__aligned_u64	prog_attach_flags;
 	} query;
 
 	struct { /* anonymous struct used by BPF_RAW_TRACEPOINT_OPEN command */