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bpf: Handle allocation failure in acquire_lock_state

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The acquire_lock_state function needs to handle possible NULL values
returned by acquire_reference_state, and return -ENOMEM.

Fixes: 769b0f1c82 ("bpf: Refactor {acquire,release}_reference_state")
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20250206105435.2159977-24-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
This commit is contained in:
Kumar Kartikeya Dwivedi 2025-02-06 02:54:31 -08:00 • committed by Alexei Starovoitov
parent 310794c219
commit 8784714d7f
1 changed files with 2 additions and 0 deletions
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kernel/bpf/verifier.c
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@ -1501,6 +1501,8 @@ static int acquire_lock_state(struct bpf_verifier_env *env, int insn_idx, enum r
struct bpf_reference_state *s;
s = acquire_reference_state(env, insn_idx);
if (!s)
return -ENOMEM;
s->type = type;
s->id = id;
s->ptr = ptr;