diff options
| author |   Mao Wenan <maowenan@huawei.com> | 2020-04-18 09:37:35 +0800 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2020-04-26 08:40:01 -0700 |
| commit | b0b3fb6759220d4fa359e9ac486859c9d422c204 (patch) | |
| tree | 6c90dffcd354a412ab54c94ebf0d13309065cf30 /kernel/bpf/verifier.c | |
| parent | net: hns3: remove an unnecessary check in hclge_set_umv_space() (diff) | |
| download | linux-dev-b0b3fb6759220d4fa359e9ac486859c9d422c204.tar.xz linux-dev-b0b3fb6759220d4fa359e9ac486859c9d422c204.zip | |
bpf: Remove set but not used variable 'dst_known'
Fixes gcc '-Wunused-but-set-variable' warning:
kernel/bpf/verifier.c:5603:18: warning: variable ‘dst_known’
set but not used [-Wunused-but-set-variable], delete this
variable.
Signed-off-by: Mao Wenan <maowenan@huawei.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Song Liu <songliubraving@fb.com>
Link: https://lore.kernel.org/bpf/20200418013735.67882-1-maowenan@huawei.com
Diffstat (limited to 'kernel/bpf/verifier.c')
| -rw-r--r-- | kernel/bpf/verifier.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c index fa1d8245b925..15ba8bf92ca9 100644 --- a/kernel/bpf/verifier.c +++ b/kernel/bpf/verifier.c @@ -5609,7 +5609,7 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env, { struct bpf_reg_state *regs = cur_regs(env); u8 opcode = BPF_OP(insn->code); - bool src_known, dst_known; + bool src_known; s64 smin_val, smax_val; u64 umin_val, umax_val; s32 s32_min_val, s32_max_val; @@ -5631,7 +5631,6 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env, if (alu32) { src_known = tnum_subreg_is_const(src_reg.var_off); - dst_known = tnum_subreg_is_const(dst_reg->var_off); if ((src_known && (s32_min_val != s32_max_val || u32_min_val != u32_max_val)) || s32_min_val > s32_max_val || u32_min_val > u32_max_val) { @@ -5643,7 +5642,6 @@ static int adjust_scalar_min_max_vals(struct bpf_verifier_env *env, } } else { src_known = tnum_is_const(src_reg.var_off); - dst_known = tnum_is_const(dst_reg->var_off); if ((src_known && (smin_val != smax_val || umin_val != umax_val)) || smin_val > smax_val || umin_val > umax_val) { |