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UPSTREAM: bpf: Remove set but not used variable 'dst_known'

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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.

Change-Id: Ic56d889441142d88d0723552ac20410bc3ac2e66
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
This commit is contained in:
Mao Wenan 2020-04-18 09:37:35 +08:00 • committed by basamaryan
commit 324491b42f
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GPG key ID: 210D5384FB2A5885
1 changed files with 1 additions and 3 deletions
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4
kernel/bpf/verifier.c
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@ -5792,7 +5792,7 @@ 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;
@ -5813,7 +5813,6 @@ 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) {
@ -5825,7 +5824,6 @@ 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) {