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authorAndrii Nakryiko <andrii@kernel.org>2020-12-03 12:46:22 -0800
committerAlexei Starovoitov <ast@kernel.org>2020-12-03 17:38:20 -0800
commit2fe8890848c799515a881502339a0a7b2b555988 (patch)
tree34b719c69071e4b17daf35bf48c42263176c82e8
parent12cc126df82c96c89706aa207ad27c56f219047c (diff)
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: 607c543f939d ("bpf: Sanitize BTF data pointer after module is loaded") Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20201203204634.1325171-3-andrii@kernel.org
-rw-r--r--kernel/module.c1
1 files changed, 0 insertions, 1 deletions
diff --git a/kernel/module.c b/kernel/module.c
index 18f259d61d14..c3a9e972d3b2 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