From 3244d6ee01b52122a95e695b4c2866a398980362 Mon Sep 17 00:00:00 2001 From: Andrii Nakryiko Date: Thu, 3 Dec 2020 12:46:22 -0800 Subject: [PATCH] bpf: Keep module's btf_data_size intact after load Having real btf_data_size stored in struct module is benefitial to quickly determine which kernel modules have associated BTF object and which don't. There is no harm in keeping this info, as opposed to keeping invalid pointer. Fixes: a5b690c3b0b7 ("bpf: Sanitize BTF data pointer after module is loaded") Signed-off-by: Andrii Nakryiko Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20201203204634.1325171-3-andrii@kernel.org --- kernel/module.c | 1 - 1 file changed, 1 deletion(-) diff --git a/kernel/module.c b/kernel/module.c index 18f259d61d147..c3a9e972d3b25 100644 --- a/kernel/module.c +++ b/kernel/module.c @@ -3712,7 +3712,6 @@ static noinline int do_init_module(struct module *mod) #ifdef CONFIG_DEBUG_INFO_BTF_MODULES /* .BTF is not SHF_ALLOC and will get removed, so sanitize pointer */ mod->btf_data = NULL; - mod->btf_data_size = 0; #endif /* * We want to free module_init, but be aware that kallsyms may be -- 2.39.5