diff mbox series

[bpf-next] bpf: Define sock security related BTF IDs under CONFIG_SECURITY_NETWORK

Message ID 20221217062144.2507222-1-houtao@huaweicloud.com (mailing list archive)
State Accepted
Commit cc074822465d18a2d39e0b3e2b48b6766a568db2
Delegated to: BPF
Headers show
Series [bpf-next] bpf: Define sock security related BTF IDs under CONFIG_SECURITY_NETWORK | expand

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Context Check Description
netdev/tree_selection success Clearly marked for bpf-next
netdev/fixes_present success Fixes tag not required for -next series
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netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 2 this patch: 2
netdev/cc_maintainers warning 2 maintainers not CCed: revest@chromium.org jackmanb@chromium.org
netdev/build_clang success Errors and warnings before: 1 this patch: 1
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
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netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 10 lines checked
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Commit Message

Hou Tao Dec. 17, 2022, 6:21 a.m. UTC 
From: Hou Tao <houtao1@huawei.com>

There are warnings reported from resolve_btfids when building vmlinux
with CONFIG_SECURITY_NETWORK disabled:

  WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_free_security
  WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_alloc_security

So only define BTF IDs for these LSM hooks when CONFIG_SECURITY_NETWORK
is enabled.

Signed-off-by: Hou Tao <houtao1@huawei.com>
---
 kernel/bpf/bpf_lsm.c | 2 ++
 1 file changed, 2 insertions(+)

Comments

Yonghong Song Dec. 17, 2022, 4:25 p.m. UTC | #1 
On 12/16/22 10:21 PM, Hou Tao wrote:
> From: Hou Tao <houtao1@huawei.com>
> 
> There are warnings reported from resolve_btfids when building vmlinux
> with CONFIG_SECURITY_NETWORK disabled:
> 
>    WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_free_security
>    WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_alloc_security
> 
> So only define BTF IDs for these LSM hooks when CONFIG_SECURITY_NETWORK
> is enabled.
> 
> Signed-off-by: Hou Tao <houtao1@huawei.com>

LGTM. I think this patch should go to bpf tree.

Acked-by: Yonghong Song <yhs@fb.com>
patchwork-bot+netdevbpf@kernel.org Dec. 19, 2022, 9:10 p.m. UTC | #2 
Hello:

This patch was applied to bpf/bpf.git (master)
by Daniel Borkmann <daniel@iogearbox.net>:

On Sat, 17 Dec 2022 14:21:44 +0800 you wrote:
> From: Hou Tao <houtao1@huawei.com>
> 
> There are warnings reported from resolve_btfids when building vmlinux
> with CONFIG_SECURITY_NETWORK disabled:
> 
>   WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_free_security
>   WARN: resolve_btfids: unresolved symbol bpf_lsm_sk_alloc_security
> 
> [...]

Here is the summary with links:
  - [bpf-next] bpf: Define sock security related BTF IDs under CONFIG_SECURITY_NETWORK
    https://git.kernel.org/bpf/bpf/c/cc074822465d

You are awesome, thank you!
diff mbox series

Patch

diff --git a/kernel/bpf/bpf_lsm.c b/kernel/bpf/bpf_lsm.c
index 9ea42a45da47..a4a41ee3e80b 100644
--- a/kernel/bpf/bpf_lsm.c
+++ b/kernel/bpf/bpf_lsm.c
@@ -351,8 +351,10 @@  BTF_ID(func, bpf_lsm_bpf_prog_alloc_security)
 BTF_ID(func, bpf_lsm_bpf_prog_free_security)
 BTF_ID(func, bpf_lsm_file_alloc_security)
 BTF_ID(func, bpf_lsm_file_free_security)
+#ifdef CONFIG_SECURITY_NETWORK
 BTF_ID(func, bpf_lsm_sk_alloc_security)
 BTF_ID(func, bpf_lsm_sk_free_security)
+#endif /* CONFIG_SECURITY_NETWORK */
 BTF_ID(func, bpf_lsm_task_free)
 BTF_SET_END(untrusted_lsm_hooks)