Friedrich Vock e5138f43c9 bpf: Fix potential integer overflow in resolve_btfids ... [ Upstream commit 44382b3ed6b2787710c8ade06c0e97f5970a47c8 ] err is a 32-bit integer, but elf_update returns an off_t, which is 64-bit at least on 64-bit platforms. If symbols_patch is called on a binary between 2-4GB in size, the result will be negative when cast to a 32-bit integer, which the code assumes means an error occurred. This can wrongly trigger build failures when building very large kernel images. Fixes: fbbb68de80 ("bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object") Signed-off-by: Friedrich Vock <friedrich.vock@gmx.de> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20240514070931.199694-1-friedrich.vock@gmx.de Signed-off-by: Sasha Levin <sashal@kernel.org>		2024-06-16 13:39:50 +02:00
..
.gitignore	tools/resolve_btfids: Add /libbpf to .gitignore	2021-02-12 13:08:26 -08:00
Build	bpf: Add resolve_btfids tool to resolve BTF IDs in ELF object	2020-07-13 10:42:02 -07:00
Makefile	tools/resolve_btfids: Do not print any commands when building silently	2022-02-08 18:34:12 +01:00
main.c	bpf: Fix potential integer overflow in resolve_btfids	2024-06-16 13:39:50 +02:00