Prep 1.30

Signed-off-by: Alan Maguire <alan.maguire@oracle.com>

Author: alan-maguire

CMakeLists.txt

@@ -45,9 +45,9 @@ if (NOT DEFINED BUILD_SHARED_LIBS)
 endif (NOT DEFINED BUILD_SHARED_LIBS)
 
 # Just for grepping, DWARVES_VERSION isn't used anywhere anymore
-# add_definitions(-D_GNU_SOURCE -DDWARVES_VERSION="v1.29")
+# add_definitions(-D_GNU_SOURCE -DDWARVES_VERSION="v1.30")
 add_definitions(-D_GNU_SOURCE -DDWARVES_MAJOR_VERSION=1)
-add_definitions(-D_GNU_SOURCE -DDWARVES_MINOR_VERSION=29)
+add_definitions(-D_GNU_SOURCE -DDWARVES_MINOR_VERSION=30)
 find_package(DWARF REQUIRED)
 find_package(ZLIB REQUIRED)
 find_package(argp REQUIRED)

MANIFEST

@@ -58,6 +58,7 @@ changes-v1.26
 changes-v1.27
 changes-v1.28
 changes-v1.29
+changes-v1.30
 buildcmd.sh
 COPYING
 NEWS

NEWS

@@ -1,3 +1,21 @@
+v1.30
+
+06350d14776a77e1 dwarves: Fix clang warning about unused variable
+d0511b0cb24ef3f4 dwarves: Add github actions to build, test
+b4a071d99bb9e7c0 pahole: When trying to encode BTF avoid DWARF less files
+59f5409f1357dee7 dwarf_loader: Fix termination on BTF encoding error
+785b9457b2fd2864 pahole: Add a BTF feature check function
+d13f825dbed9208c man-pages: Describe attributes and remove reproducible_build
+40e82f5be9a7960a pahole: Introduce --btf_feature=attributes
+e64fd0dd22bf5395 btf_encoder: Emit type tags for bpf_arena pointers
+fe2dcd28ba9d3487 pahole: Sync with libbpf mainline
+9cabda4ae6bfadcc btf_encoder: Use __weak declarations of version-dependent libbpf API
+c5677178c8b0c426 btf_encoder: Refactor btf_encoder__tag_kfuncs()
+cfdce160433adad4 btf_encoder: Filter out __gendwarfksyms_ptr_
+a0be596ae76c720d Fix spelling error.
+9810758003ce9f8c btf_encoder: Verify 0 address DWARF variables are in ELF section
+f4b76280f81bde0b btf_encoder: Fix memory access bugs
+
 v1.29
 
 7f9c031edfc6d2f6 btf_encoder: Always initialize func_state to 0

changes-v1.30

@@ -0,0 +1,41 @@
+CI testing:
+
+- support for github CI tests to build pahole with gcc
+  and LLVM.
+- support for github CI tests to build pahole, a kernel
+  along with BTF using that pahole and run tests.
+- tests can also be run standalone; see toplevel README
+  for details.
+
+DWARF loader:
+
+- better detection of abort during thread processing.
+
+BTF encoder:
+
+- pahole now uses an improved scheme to detect presence of
+  newer libbpf functions for cases where pahole is built with
+  a non-embedded libbpf. A local weak declaration is added,
+  and if the function is non-NULL - indicating it is present -
+  the associated feature is avaialble.  BTF feature detection
+  makes use of this now and BTF features declared in pahole
+  can provide a feature check function.
+
+- Type tags are now emitted for bpf_arena pointers if the
+  attributes btf_feature is specified.
+
+- kfunc tagging has been refactored into btf_encoder__collect_kfuncs
+  to simplify from the previous two-stage collect/tag process.
+
+- To support global variables other than per-CPU variables, code
+  was added to match a variable with the relevant section.  However
+  variables in to-be-discarded sections have address value 0 and
+  appeared to be in the per-CPU section (since it starts at 0).
+  Add checks to ensure the variable really is in the relevant
+  ELF section.
+
+- To avoid expensive variable address checking in the above case,
+  filter out variables prefixed by __gendwarfksyms_ptr_ which are
+  present when CONFIG_GENDWARFKSYMS is set.
+
+- Memory access bugs reported by address sanitizer were also fixed.

rpm/SPECS/dwarves.spec

@@ -2,7 +2,7 @@
 %define libver 1
 
 Name: dwarves
-Version: 1.29
+Version: 1.30
 Release: 1%{?dist}
 License: GPL-2.0-only
 Summary: Debugging Information Manipulation Tools (pahole & friends)
@@ -79,7 +79,7 @@ rm -Rf %{buildroot}
 %files
 %doc README.ctracer
 %doc README.btf
-%doc changes-v1.29
+%doc changes-v1.30
 %doc NEWS
 %{_bindir}/btfdiff
 %{_bindir}/codiff
@@ -131,6 +131,14 @@ rm -Rf %{buildroot}
 %{_libdir}/%{libname}_reorganize.so
 
 %changelog
+* Wed Apr 9 2025 Alan Maguire <alan.maguire@oracle.com> - 1.30-1
+- Better detection of abort during DWARF loader thread processing
+- pahole now detects presence of libbpf APIs and BTF features using weak function
+  declarations when built using a shared library libbpf
+- Type tags are emitted for BPF arena pointers with new BTF "attributes" feature
+
+Signed-off-by: Alan Maguire <alan.maguuire@oracle.com> - 1.30-1
+
 * Wed Jan 15 2025 Arnaldo Carvalho de Melo <acme@redhat.com> - 1.29-1
 - Multithreading is now in the DWARF loader using a jobs queue and a pool of worker threads.
 - The BTF encoding now is always reproducible, and as fast/faster than before.