This is a note to let you know that I've just added the patch titled
bpf: Fix sparse warning for bpf_kptr_xchg_proto
to the 5.18-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
bpf-fix-sparse-warning-for-bpf_kptr_xchg_proto.patch
and it can be found in the queue-5.18 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5b74c690e1c55953ec99fd9dab74f72dbee4fe95 Mon Sep 17 00:00:00 2001
From: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
Date: Thu, 12 May 2022 01:16:51 +0530
Subject: bpf: Fix sparse warning for bpf_kptr_xchg_proto
From: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
commit 5b74c690e1c55953ec99fd9dab74f72dbee4fe95 upstream.
Kernel Test Robot complained about missing static storage class
annotation for bpf_kptr_xchg_proto variable.
sparse: symbol 'bpf_kptr_xchg_proto' was not declared. Should it be static?
This caused by missing extern definition in the header. Add it to
suppress the sparse warning.
Fixes: c0a5a21c25f3 ("bpf: Allow storing referenced kptr in map")
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@xxxxxxxxx>
Link: https://lore.kernel.org/r/20220511194654.765705-2-memxor@xxxxxxxxx
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
include/linux/bpf.h | 1 +
1 file changed, 1 insertion(+)
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -2228,6 +2228,7 @@ extern const struct bpf_func_proto bpf_f
extern const struct bpf_func_proto bpf_loop_proto;
extern const struct bpf_func_proto bpf_strncmp_proto;
extern const struct bpf_func_proto bpf_copy_from_user_task_proto;
+extern const struct bpf_func_proto bpf_kptr_xchg_proto;
const struct bpf_func_proto *tracing_prog_func_proto(
enum bpf_func_id func_id, const struct bpf_prog *prog);
Patches currently in stable-queue which might be from memxor@xxxxxxxxx are
queue-5.18/bpf-allow-storing-referenced-kptr-in-map.patch
queue-5.18/bpf-move-check_ptr_off_reg-before-check_map_access.patch
queue-5.18/bpf-tag-argument-to-be-released-in-bpf_func_proto.patch
queue-5.18/bpf-adapt-copy_map_value-for-multiple-offset-case.patch
queue-5.18/bpf-wire-up-freeing-of-referenced-kptr.patch
queue-5.18/bpf-fix-sparse-warning-for-bpf_kptr_xchg_proto.patch
queue-5.18/bpf-populate-pairs-of-btf_id-and-destructor-kfunc-in.patch
queue-5.18/bpf-suppress-passing-zero-to-ptr_err-warning.patch
queue-5.18/bpf-allow-storing-unreferenced-kptr-in-map.patch
queue-5.18/bpf-make-btf_find_field-more-generic.patch
