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Diffstat (limited to 'CHANGELOG')
| -rw-r--r-- | CHANGELOG | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/CHANGELOG b/CHANGELOG index f4f901e2fd05..63af22f087da 100644 --- a/CHANGELOG +++ b/CHANGELOG @@ -1,3 +1,73 @@ +# Changes in version 7.4.0: + +### Breaking change + +- Kernel configuration options related to bpfilter (namely: CONFIG_BPFILTER and +CONFIG_BPFILTER_UMH) are no longer checked with bpftool feature probe, following +bpfilter's removal in recent kernels. (e725e62) + +### New features + +The information displayed for BPF links (bpftool link list) keeps getting enriched: + +- Display uprobe_multi links. (dd0b761) +- Display cookie for perf event link probes. (25df69b) +- Display cookie for kprobe_multi links. (4263cc0) + +Other features: + +- Generate shadow variables for struct_ops maps in program skeletons. Shadow types +allow skeleton users to easily access the fields of struct_ops maps at runtime. +An example program using shadow types is also added to the bpftool-gen manual +page. (fc0ad76, 579d6b0) + +- Mark orphaned programs as such when listing programs. Orphaned programs are +programs removed in IRQ context, on their way to be unloaded from kernel memory, +but possibly passing through audit hooks. Such programs would only be listed on +recent kernels. (5b0a3a4) + +- Recognize arena map types (a09e203) and global variables (73a2c7e), and support +the addr_space_cast instruction in the disassembler for translated programs, +used for working with arena maps (c305ebf). + +### Bug fixes + +- In the mirror repository, fix the detection of clang-bpf-co-re (for skeletons +support) for some clang versions. (515739f) + +- Displaying PIDs for processes holding references to BPF links when listing +links with bpftool link list on older kernels broke in v7.3.0, because the +internal program pid_iter would fail to load. Fix the program to ensure that +pid_iter loads and PIDs are displayed. (3214350) + +- When loading the internal pid_iter program for displaying PIDs of processes +holding file descriptors to BPF programs, we would suppress the logs from +libbpf. Display them when running bpftool in debug mode (--debug). (0cb4aaf) + +### Other internal changes + +- Silence build warning from calloc() appearing with recent versions of GCC +(supporting -Wcalloc-transposed-args). (c4cc180) + +- Use POSIX's version of basename() for more portability. (6e0d7d0) + +- Improve bpftool's bootstrap build by skipping compilation for some unnecessary +object files (3dc1ac6) and passing more relevant values in HOST_CFLAGS and +HOST_LDFLAGS (c1adf4a). This also results in more accurate results when listing +features with bpftool version for the boostrap bpftool binary. + +### Known bugs + +- Command bpftool cgroup tree may be broken when running with kernels under +v6.1. (#41) + +- When loading multiple programs with bpftool prog loadall and passing a +directory name for pinning them that is not located under an existing bpffs, +bpftool attempts to mount a new bpffs on the parent of the directory rather than +on the directory itself, possibly leading to a portion of the file arborescence +to be unexpectedly hidden by the mount. (#100) + + # Changes in version 7.3.0: ### Deprecation |