Alan Maguire 8e64c387c9 libbpf: Add identical pointer detection to btf_dedup_is_equiv() ... Recently as a side-effect of commit ac053946f5 ("compiler.h: introduce TYPEOF_UNQUAL() macro") issues were observed in deduplication between modules and kernel BTF such that a large number of kernel types were not deduplicated so were found in module BTF (task_struct, bpf_prog etc). The root cause appeared to be a failure to dedup struct types, specifically those with members that were pointers with __percpu annotations. The issue in dedup is at the point that we are deduplicating structures, we have not yet deduplicated reference types like pointers. If multiple copies of a pointer point at the same (deduplicated) integer as in this case, we do not see them as identical. Special handling already exists to deal with structures and arrays, so add pointer handling here too. Reported-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Alan Maguire <alan.maguire@oracle.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20250429161042.2069678-1-alan.maguire@oracle.com		2025-04-29 10:16:23 -07:00
..
api	libapi: Add missing header with NAME_MAX define to io_dir.h	2025-03-13 00:29:36 -07:00
bpf	libbpf: Add identical pointer detection to btf_dedup_is_equiv()	2025-04-29 10:16:23 -07:00
perf	perf tools changes for v6.15	2025-03-31 08:52:33 -07:00
subcmd	perf tools changes for v6.13	2024-11-26 14:54:00 -08:00
symbol	tools: Drop nonsensical -O6	2024-09-11 13:08:36 -03:00
thermal	tools: Remove redundant quiet setup	2025-02-18 16:27:43 -03:00
argv_split.c
bitmap.c	lib/interval_tree: add test case for interval_tree_iter_xxx() helpers	2025-03-17 12:17:00 -07:00
cmdline.c	memblock test: fix implicit declaration of function 'memparse'	2024-08-06 08:21:25 +03:00
ctype.c
find_bit.c	tools: sync find_bit() implementation	2022-09-21 12:21:44 -07:00
hweight.c
list_sort.c	tools/lib/list_sort: remove unnecessary header includes	2024-11-05 17:12:33 -08:00
rbtree.c	tools lib rbtree: pick some improvements from the kernel rbtree code	2024-05-08 08:41:27 -07:00
slab.c	lib/rbtree: enable userland test suite for rbtree related data structure	2025-03-17 12:17:00 -07:00
str_error_r.c
string.c	perf annotate: Add disasm_line__parse() to parse raw instruction for powerpc	2024-07-31 16:12:59 -03:00
vsprintf.c
zalloc.c