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net/mlx4: Check retval of mlx4_bitmap_init 

If mlx4_bitmap_init fails, mlx4_bitmap_alloc_range will dereference
the NULL pointer (bitmap->table).

Make sure, that mlx4_bitmap_alloc_range called in no error case.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Fixes: d57febe1a4 ("net/mlx4: Add A0 hybrid steering")
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Peter Kosyh <pkosyh@yandex.ru>
Link: https://lore.kernel.org/r/20221117152806.278072-1-pkosyh@yandex.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Peter Kosyh 2022-11-17 18:28:06 +03:00 committed by Jakub Kicinski
parent f700741405
commit 594c61ffc7
1 changed files with 2 additions and 1 deletions
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3
drivers/net/ethernet/mellanox/mlx4/qp.c
View File

@ -697,7 +697,8 @@ static int mlx4_create_zones(struct mlx4_dev *dev,
err = mlx4_bitmap_init(*bitmap + k, 1,
MLX4_QP_TABLE_RAW_ETH_SIZE - 1, 0,
0);
mlx4_bitmap_alloc_range(*bitmap + k, 1, 1, 0);
if (!err)
mlx4_bitmap_alloc_range(*bitmap + k, 1, 1, 0);
}
if (err)