This commit is essentially tar -xf v.1.1.0.tar.gz, and unfortunately, is a rubber stamp.
f80252032c63b4d0993f4439d059c9bb2684a6c5
adds our older elftoolchain headers and comments out usdt (Userland Statically Defined Tracing) handling from libbpf. elftoolchain doesn't support gelf_getnote which is needed by usdt handling. Since we don't leverage usdt, it seemed reasonable to just comment out the usage. Also, this commit upgrades some deprecated function use in unit tests.
f588fd78820e0cd4c6da4455e78964e978669647
When testing the above commits it was revealed that our tty_write probes were failing. Previously, when a buffer was passed to write and an iovec needed to be generated in kernel, nr_segs of iov_iter would be set to 1. Starting in 6.0, a new field was added to the iov_iter, ubuf. Here's the commit. Later this commit, stopped initializing nr_segs to one. So, single segmented iovecs were being ignored by our tty_write probe.
Starting in 6.0 BTF added a new kind: https://elixir.bootlin.com/linux/v6.0/source/tools/lib/bpf/btf.h#L319 Our current BTF handling fails when it encounters these type of entries, and thus our probes fail to load. This PR fixes this by updating our libbpf to v1.1.0.
There are three initial commits:
6b2668b843880faa1d1f3e86839d86cc5e8a29d3
This commit is essentially
tar -xf v.1.1.0.tar.gz, and unfortunately, is a rubber stamp.f80252032c63b4d0993f4439d059c9bb2684a6c5
adds our older elftoolchain headers and comments out usdt (Userland Statically Defined Tracing) handling from libbpf. elftoolchain doesn't support
gelf_getnotewhich is needed by usdt handling. Since we don't leverage usdt, it seemed reasonable to just comment out the usage. Also, this commit upgrades some deprecated function use in unit tests.f588fd78820e0cd4c6da4455e78964e978669647
When testing the above commits it was revealed that our tty_write probes were failing. Previously, when a buffer was passed to write and an iovec needed to be generated in kernel,
nr_segsof iov_iter would be set to 1. Starting in 6.0, a new field was added to theiov_iter,ubuf. Here's the commit. Later this commit, stopped initializingnr_segsto one. So, single segmented iovecs were being ignored by our tty_write probe.