RDMA/mlx5: Fix memory leak in GET_DATA_DIRECT_SYSFS_PATH handler

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[ Upstream commit 9b9d253908 ]

The UVERBS_HANDLER(MLX5_IB_METHOD_GET_DATA_DIRECT_SYSFS_PATH) function
allocates memory for the device path using kobject_get_path(). If the
length of the device path exceeds the output buffer length, the function
returns -ENOSPC but does not free the allocated memory, resulting in a
memory leak.

Add a kfree() call to the error path to ensure the allocated memory is
properly freed.

Compile tested only. Issue found using a prototype static analysis tool
and code review.

Fixes: ec7ad65309 ("RDMA/mlx5: Introduce GET_DATA_DIRECT_SYSFS_PATH ioctl")
Signed-off-by: Zilin Guan <zilin@seu.edu.cn>
Link: https://patch.msgid.link/20260126074801.627898-1-zilin@seu.edu.cn
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Zilin Guan 2026-01-26 07:48:01 +00:00 • committed by Sasha Levin

parent d533425ac1

commit ee998cdbff

1 changed files with 2 additions and 2 deletions

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drivers/infiniband/hw/mlx5/std_types.c

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