sync: Pull latest bpftool changes from kernel

Syncing latest bpftool commits from kernel repository.
Baseline bpf-next commit:   21aeabb68258ce17b91af113a768760b3a491d93
Checkpoint bpf-next commit: de7342228b7343774d6a9981c2ddbfb5e201044b
Baseline bpf commit:        27861fc720be2c39b861d8bdfb68287f54de6855
Checkpoint bpf commit:      4d920ed684392ae064af62957d6f5a90312dfaf6

Jiapeng Chong (1):
  bpftool: Remove duplicate string.h header

KP Singh (4):
  bpf: Implement exclusive map creation
  bpf: Return hashes of maps in BPF_OBJ_GET_INFO_BY_FD
  bpf: Implement signature verification for BPF programs
  bpftool: Add support for signing BPF programs

Mykyta Yatsenko (1):
  bpf: bpf task work plumbing

Quentin Monnet (2):
  bpftool: Search for tracefs at /sys/kernel/tracing first
  bpftool: Add bash completion for program signing options

Rong Tao (1):
  bpf: Finish constification of 1st parameter of bpf_d_path()

Tao Chen (2):
  bpftool: Add HELP_SPEC_OPTIONS in token.c
  bpftool: Fix UAF in get_delegate_value

Tom Stellard (1):
  bpftool: Fix -Wuninitialized-const-pointer warnings with clang >= 21

Yuan Chen (2):
  bpftool: Refactor kernel config reading into common helper
  bpftool: Add CET-aware symbol matching for x86_64 architectures

 bash-completion/bpftool  |  26 +++--
 docs/bpftool-gen.rst     |  13 ++-
 docs/bpftool-prog.rst    |  14 ++-
 include/uapi/linux/bpf.h |  24 ++++-
 src/Makefile             |   6 +-
 src/btf_dumper.c         |   2 +-
 src/cgroup.c             |   4 +
 src/common.c             |  93 +++++++++++++++++
 src/feature.c            |  86 +---------------
 src/gen.c                |  68 ++++++++++++-
 src/link.c               |  54 +++++++++-
 src/main.c               |  26 ++++-
 src/main.h               |  20 ++++
 src/prog.c               |  31 +++++-
 src/sign.c               | 211 +++++++++++++++++++++++++++++++++++++++
 src/token.c              |  91 +++++++----------
 src/tracelog.c           |  11 +-
 17 files changed, 609 insertions(+), 171 deletions(-)
 create mode 100644 src/sign.c

Signed-off-by: Quentin Monnet <[email protected]>

Author: qmonnet

BPF-CHECKPOINT-COMMIT

@@ -1 +1 @@
-27861fc720be2c39b861d8bdfb68287f54de6855
+4d920ed684392ae064af62957d6f5a90312dfaf6

CHECKPOINT-COMMIT

@@ -1 +1 @@
-21aeabb68258ce17b91af113a768760b3a491d93
+de7342228b7343774d6a9981c2ddbfb5e201044b