CC: [email protected] CC: [email protected] TO: Eli Cohen <[email protected]> CC: "Michael S. Tsirkin" <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 704f4cba43d4ed31ef4beb422313f1263d87bc55 commit: 71ab6a7cfbae27f86a3901daab10bfe13b3a1e3a vdpa/mlx5: Fix possible failure in umem size calculation date: 3 weeks ago :::::: branch date: 4 hours ago :::::: commit date: 3 weeks ago config: x86_64-randconfig-m001-20210723 (attached as .config) compiler: gcc-10 (Ubuntu 10.3.0-1ubuntu1~20.04) 10.3.0 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> New smatch warnings: drivers/vdpa/mlx5/net/mlx5_vnet.c:638 set_umem_size() error: uninitialized symbol 'p_a'. drivers/vdpa/mlx5/net/mlx5_vnet.c:638 set_umem_size() error: uninitialized symbol 'p_b'. Old smatch warnings: drivers/vdpa/mlx5/net/mlx5_vnet.c:715 umem_destroy() error: potentially dereferencing uninitialized 'umem'. drivers/vdpa/mlx5/net/mlx5_vnet.c:2058 mlx5_vdpa_dev_add() error: uninitialized symbol 'pfmdev'. vim +/p_a +638 drivers/vdpa/mlx5/net/mlx5_vnet.c 1a86b377aa2147 Eli Cohen 2020-08-04 613 71ab6a7cfbae27 Eli Cohen 2021-05-30 614 static void set_umem_size(struct mlx5_vdpa_net *ndev, struct mlx5_vdpa_virtqueue *mvq, int num, 1a86b377aa2147 Eli Cohen 2020-08-04 615 struct mlx5_vdpa_umem **umemp) 1a86b377aa2147 Eli Cohen 2020-08-04 616 { 1a86b377aa2147 Eli Cohen 2020-08-04 617 struct mlx5_core_dev *mdev = ndev->mvdev.mdev; 1a86b377aa2147 Eli Cohen 2020-08-04 618 int p_a; 1a86b377aa2147 Eli Cohen 2020-08-04 619 int p_b; 1a86b377aa2147 Eli Cohen 2020-08-04 620 1a86b377aa2147 Eli Cohen 2020-08-04 621 switch (num) { 1a86b377aa2147 Eli Cohen 2020-08-04 622 case 1: 1a86b377aa2147 Eli Cohen 2020-08-04 623 p_a = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_1_buffer_param_a); 1a86b377aa2147 Eli Cohen 2020-08-04 624 p_b = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_1_buffer_param_b); 1a86b377aa2147 Eli Cohen 2020-08-04 625 *umemp = &mvq->umem1; 1a86b377aa2147 Eli Cohen 2020-08-04 626 break; 1a86b377aa2147 Eli Cohen 2020-08-04 627 case 2: 1a86b377aa2147 Eli Cohen 2020-08-04 628 p_a = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_2_buffer_param_a); 1a86b377aa2147 Eli Cohen 2020-08-04 629 p_b = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_2_buffer_param_b); 1a86b377aa2147 Eli Cohen 2020-08-04 630 *umemp = &mvq->umem2; 1a86b377aa2147 Eli Cohen 2020-08-04 631 break; 1a86b377aa2147 Eli Cohen 2020-08-04 632 case 3: 1a86b377aa2147 Eli Cohen 2020-08-04 633 p_a = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_3_buffer_param_a); 1a86b377aa2147 Eli Cohen 2020-08-04 634 p_b = MLX5_CAP_DEV_VDPA_EMULATION(mdev, umem_3_buffer_param_b); 1a86b377aa2147 Eli Cohen 2020-08-04 635 *umemp = &mvq->umem3; 1a86b377aa2147 Eli Cohen 2020-08-04 636 break; 1a86b377aa2147 Eli Cohen 2020-08-04 637 } 71ab6a7cfbae27 Eli Cohen 2021-05-30 @638 (*umemp)->size = p_a * mvq->num_ent + p_b; 1a86b377aa2147 Eli Cohen 2020-08-04 639 } 1a86b377aa2147 Eli Cohen 2020-08-04 640 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/[email protected]
.config.gz
Description: application/gzip
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