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mirror_ubuntu-kernels/tools/bpf/resolve_btfids
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Friedrich Vock 44382b3ed6 bpf: Fix potential integer overflow in resolve_btfids 
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
2024-05-24 17:12:12 +02:00
..
.gitignore tools/resolve_btfids: Add /libsubcmd to .gitignore 2023-03-06 16:23:01 +01:00
Build tools/resolve_btfids: Compile resolve_btfids as host program 2023-02-07 22:47:16 +01:00
main.c bpf: Fix potential integer overflow in resolve_btfids 2024-05-24 17:12:12 +02:00
Makefile tools/resolve_btfids: Fix setting HOSTCFLAGS 2023-06-05 15:44:47 -07:00