tree: https://github.com/0day-ci/linux/commits/Geliang-Tang/mptcp-unify-MPTCP_P... head: 3f09f774b312ce644f099fbd6c937a55557282de commit: c02de26a91832f767c707764154cbce3ad8dd459 [8/15] mptcp: introduce token KUNIT self-tests config: c6x-randconfig-s031-20200612 (attached as .config) compiler: c6x-elf-gcc (GCC) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.1-250-g42323db3-dirty git checkout c02de26a91832f767c707764154cbce3ad8dd459 # save the attached .config to linux build tree make W=1 C=1 ARCH=c6x CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) vim +68 net/mptcp/token_test.c 59 60 static void mptcp_token_test_msk_basic(struct kunit *test) 61 { 62 struct inet_connection_sock *icsk = build_icsk(test); 63 struct mptcp_subflow_context *ctx = build_ctx(test); 64 struct mptcp_sock *msk = build_msk(test); 65 struct mptcp_sock *null_msk = NULL; 66 struct sock *sk; 67 69 ctx->conn = (struct sock*)msk; 70 sk = (struct sock*)msk; 71 72 KUNIT_ASSERT_EQ(test, 0, 73 mptcp_token_new_connect((struct sock *)icsk)); 74 KUNIT_EXPECT_NE(test, 0, (int)ctx->token); 75 KUNIT_EXPECT_EQ(test, ctx->token, msk->token); 76 KUNIT_EXPECT_PTR_EQ(test, msk, mptcp_token_get_sock(ctx->token)); 77 KUNIT_EXPECT_EQ(test, 2, (int)refcount_read(&sk->sk_refcnt)); 78 79 mptcp_token_destroy(msk); 80 KUNIT_EXPECT_PTR_EQ(test, null_msk, mptcp_token_get_sock(ctx->token)); 81 } 82 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org