ELBA-2025-20221

ELBA-2025-20221 - dwarves bug fix update

Type:	BUG
Impact:	NA
Release Date:	2025-04-08

Description

[1.28-1]
- Build new dwarves release, depends on libbpf-devel v1.5 [Orabug: 37277258]

[1.27-2]
- Backport upstream bugfixes for clang builds
Resolves: RHEL-54022

[1.27-1]
- Resolves: RHEL-30780
- New release: v1.26
- When expanding types using 'pahole -E' do it for union and struct typedefs and for enums too.
- Print number of holes, bit holes and bit paddings in class member types.
- Introduce --contains_enumerator=ENUMERATOR_NAME:
- Fix pretty printing using DWARF, waiting for a CU with both class (-C) and a specified 'type_enum'.
- Add support for DW_TAG_constant in the DWARF loader, first seen in Go DWARF.
- Fix loading DW_TAG_subroutine_type generated by the Go compiler.
- Fix loading of 32-bit signed enums from BTF.
- Add 'pahole --btf_features' to allow consumers to specify an opt-in set of features they want to use in BTF encoding.
- Parallelize loading BTF and DWARF, speeding up a bit btfdiff.
- Do type expansion to cover 'private' types and enumerations in btfdiff.
- New release: v1.27
- Reproducible parallel builds: multiple runs with different number of loading/encoding threads produce the same result.
- Inject kfunc decl tags into BTF from the BTF IDs ELF section in the Linux kernel vmlinux file.
- Sanitize unsupported DWARF int type with greater-than-16 byte, as BTF doesn't support it.
- Initial support for BTF_KIND_DECL_TAG in the BTF loader, adding support in pfunct output.
- Fix hole discovery with inheritance in C++.

[1.25-1]
- Resolves: rhbz#2190484
- Build with system libbpf
- New release: v1.25
- Support for DW_TAG_unspecified_type more generally.
- Make sure struct member offsets are in ascending order. Rust BTF needs this.
- Support C atomic types (DW_TAG_atomic_type).
- Initial support for DW_TAG_LLVM_annotation, used for BTF type tags, for __rcu, __user, etc
- Exclude functions with the same name (static functions in different CUs), inconsistent prototypes or not following calling convention.
- Allow generation of BTF for optimized functions, those that end with a .isra*, .constprop*.
- Support 'pahole --lang=/--lang_exclude=asm'
- Support --compile from DWARF in addition to from BTF.
- Exclude RUST CUs in 'btfdiff', as those are not yet being BTF encoded.

Updated Packages

Release/Architecture	Filename	sha256	Superseded By Advisory	Channel Label
Oracle Linux 9 (aarch64)	dwarves-1.28-1.el9.src.rpm	e414c93007b76208c433512663a6fed6c8c5cacb883ea628e586e921c72207ce	-	ol9_aarch64_developer_UEKR8
	dwarves-1.28-1.el9.aarch64.rpm	1efc322292b0f5b22f964c3b5c4732c214851dc09baafb128dd6064454f15d0c	-	ol9_aarch64_developer_UEKR8
	libdwarves1-1.28-1.el9.aarch64.rpm	56c20dd082e88d2bc5609fa7c7064f46714e93b8ba7b29b244745a3952606f0e	-	ol9_aarch64_developer_UEKR8
Oracle Linux 9 (x86_64)	dwarves-1.28-1.el9.src.rpm	e414c93007b76208c433512663a6fed6c8c5cacb883ea628e586e921c72207ce	-	ol9_x86_64_developer_UEKR8
	dwarves-1.28-1.el9.x86_64.rpm	04d371c8a10605bd62d180290c9dc9876ad23afcd3e206ee686e9f4173b0e83f	-	ol9_x86_64_developer_UEKR8
	libdwarves1-1.28-1.el9.x86_64.rpm	6ec9dbbb9b80eb856984b9bc60db9274c3cc3e33ae5c1ff1fb6e4dfe90ba4b60	-	ol9_x86_64_developer_UEKR8

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