The commit f7866c358733 ("bpf: Fix null pointer dereference in resolve_prog_type() for BPF_PROG_TYPE_EXT")
fixed a NULL pointer dereference panic, but didn't fix the issue that
fails to update attached freplace prog to prog_array map.
This patch fixes the issue.
v2 -> v3:
* Address comments from Yonghong:
* Use 12 alphanums for commit ID.
* Keep commit subject in the same line.
* Remove some unnecessary empty lines.
v1 -> v2:
* Address comments from Yonghong:
* Check then return prog->aux->saved_dst_prog_type.
* Remove ASSERT_GE() that checks prog_fd and map_fd.
* Remove #include "bpf_legacy.h".
* Fix some code style issues.
RFC PATCH -> v1:
* Respin the PATCH with updated 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 | 65 ++++++++++++++++++-
.../selftests/bpf/progs/tailcall_freplace.c | 23 +++++++
.../testing/selftests/bpf/progs/tc_bpf2bpf.c | 22 +++++++
4 files changed, 111 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
