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net/mlx5e: Fix NULL deref in mlx5e_tir_builder_alloc()

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[ Upstream commit f25389e779 ]

In mlx5e_tir_builder_alloc() kvzalloc() may return NULL
which is dereferenced on the next line in a reference
to the modify field.

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

Fixes: a6696735d6 ("net/mlx5e: Convert TIR to a dedicated object")
Signed-off-by: Elena Salomatkina <esalomatkina@ispras.ru>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Elena Salomatkina 2024-09-24 19:00:18 +03:00 committed by Greg Kroah-Hartman
parent 1c252d6465
commit 0168ab6fbd
1 changed files with 3 additions and 0 deletions
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3
drivers/net/ethernet/mellanox/mlx5/core/en/tir.c
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@ -23,6 +23,9 @@ struct mlx5e_tir_builder *mlx5e_tir_builder_alloc(bool modify)
struct mlx5e_tir_builder *builder; struct mlx5e_tir_builder *builder;
builder = kvzalloc(sizeof(*builder), GFP_KERNEL); builder = kvzalloc(sizeof(*builder), GFP_KERNEL);
if (!builder)
return NULL;
builder->modify = modify; builder->modify = modify;
return builder; return builder;