bpf: Delete unused variable

'cnt' is set, but not used. Delete it.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202604111401.eqzyF2kx-lkp@intel.com/
Fixes: 2c167d91775b ("bpf: change logging scheme for live stack analysis")
Link: https://lore.kernel.org/r/20260411141447.45932-1-alexei.starovoitov@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/kernel/bpf/liveness.c b/kernel/bpf/liveness.c
index 9bb6574d73feb97c094453175b4cb3655e11ead4..59d990237cbd266bb98b9ee6e273cfd7130bdc1e 100644 (file)
--- a/kernel/bpf/liveness.c
+++ b/kernel/bpf/liveness.c
@@ -306,7 +306,7 @@ static inline bool update_insn(struct bpf_verifier_env *env,
 /* Fixed-point computation of @live_before marks */
 static void update_instance(struct bpf_verifier_env *env, struct func_instance *instance)
 {
-       u32 i, frame, po_start, po_end, cnt;
+       u32 i, frame, po_start, po_end;
        int *insn_postorder = env->cfg.insn_postorder;
        struct bpf_subprog_info *subprog;
        bool changed;
@@ -315,10 +315,8 @@ static void update_instance(struct bpf_verifier_env *env, struct func_instance *
        subprog = &env->subprog_info[instance->subprog];
        po_start = subprog->postorder_start;
        po_end = (subprog + 1)->postorder_start;
-       cnt = 0;
        /* repeat until fixed point is reached */
        do {
-               cnt++;
                changed = false;
                for (frame = 0; frame <= instance->depth; frame++) {
                        if (!instance->frames[frame])