diff options
| author | Sasha Levin <sashal@kernel.org> | 2026-10-19 17:10:04 -0400 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-10-20 00:14:28 +0000 |
| commit | 63be110a96aea4d0b5d5fe34cbd3ecf0819e14a3 (patch) | |
| tree | 09be04880b01fc3144e490b80c7068093960eaba /kernel/bpf | |
| parent | 0867b7bfa9de65674c6e599fa21b762b71011b14 (diff) | |
bpf: Drop unused entries from special_kfunc_list again
Commit 6f033615ef8f ("bpf: Trim special_kfunc_list in verifier") dropped
bpf_arena_reserve_pages, bpf_stream_vprintk and bpf_stream_print_stack
from special_kfunc_list once nothing used them anymore, but commit
ab7fff217fd1 ("bpf: Check helper and kfunc arguments in one path")
brought all three back without adding any users.
Besides being dead, the bpf_arena_reserve_pages entry can't be resolved
on 32-bit and !MMU kernels, which don't build arena.o, and since commit
201a454df948 ("resolve_btfids: Fix the --fatal_warnings exit status")
the resulting resolve_btfids warning fails the build with
CONFIG_WERROR=y:
WARN: resolve_btfids: unresolved symbol bpf_arena_reserve_pages
Drop the three entries again.
Fixes: ab7fff217fd1 ("bpf: Check helper and kfunc arguments in one path")
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://patch.msgid.link/20261019211006.2574350-2-sashal@kernel.org
Diffstat (limited to 'kernel/bpf')
| -rw-r--r-- | kernel/bpf/verifier.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index 015dc1bccebe..d49b7ea2c002 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -13612,10 +13612,7 @@ enum special_kfunc_type { KF_bpf_call_rcu_tasks_trace, KF_bpf_arena_alloc_pages, KF_bpf_arena_free_pages, - KF_bpf_arena_reserve_pages, KF_bpf_session_is_return, - KF_bpf_stream_vprintk, - KF_bpf_stream_print_stack, }; BTF_ID_LIST(special_kfunc_list) @@ -13707,14 +13704,11 @@ BTF_ID(func, bpf_call_rcu) BTF_ID(func, bpf_call_rcu_tasks_trace) BTF_ID(func, bpf_arena_alloc_pages) BTF_ID(func, bpf_arena_free_pages) -BTF_ID(func, bpf_arena_reserve_pages) #ifdef CONFIG_BPF_EVENTS BTF_ID(func, bpf_session_is_return) #else BTF_ID_UNUSED #endif -BTF_ID(func, bpf_stream_vprintk) -BTF_ID(func, bpf_stream_print_stack) static bool is_bpf_cast_to_kern_ctx_kfunc(const struct bpf_call_arg_meta *meta) { |