The commit f7866c3587337731 ("bpf: Fix null pointer dereference in
resolve_prog_type() for BPF_PROG_TYPE_EXT") fixed a NULL pointer panic, but
does not support my case[0] that I want to update attached freplace prog to
PROG_ARRAY map.
This patchset fixes it to support updating attached freplace prog to
PROG_ARRAY map.
[0] https://lore.kernel.org/bpf/20240602122421.50892-1-hffilwlqm@xxxxxxxxx/
RFC PATCH -> v1:
* Respin the PATCH with updating its message.
Leon Hwang (2):
bpf: Fix updating attached freplace prog to PROG_ARRAY map
selftests/bpf: Add testcase for updating attached freplace prog to
PROG_ARRAY map
include/linux/bpf_verifier.h | 4 +-
.../selftests/bpf/prog_tests/tailcalls.c | 76 ++++++++++++++++++-
.../selftests/bpf/progs/tailcall_freplace.c | 33 ++++++++
.../testing/selftests/bpf/progs/tc_bpf2bpf.c | 23 ++++++
4 files changed, 133 insertions(+), 3 deletions(-)
create mode 100644 tools/testing/selftests/bpf/progs/tailcall_freplace.c
create mode 100644 tools/testing/selftests/bpf/progs/tc_bpf2bpf.c
--
2.44.0
