linux-kernel - Re: [PATCH] RDMA/uverbs: Check for null return of kmalloc

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Date:   Mon, 3 Jan 2022 13:56:06 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Jiasheng Jiang <jiasheng@...as.ac.cn>
Cc:     dledford@...hat.com, jgg@...pe.ca, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDMA/uverbs: Check for null return of kmalloc_array

On Fri, Dec 31, 2021 at 05:33:15PM +0800, Jiasheng Jiang wrote:
> Because of the possible failure of the allocation, data might be NULL
> pointer and will cause the dereference of the NULL pointer later.
> Therefore, it might be better to check it and return -ENOMEM.
> 
> Fixes: 6884c6c4bd09 ("RDMA/verbs: Store the write/write_ex uapi entry points in the uverbs_api")
> Signed-off-by: Jiasheng Jiang <jiasheng@...as.ac.cn>
> ---
>  drivers/infiniband/core/uverbs_uapi.c | 3 +++
>  1 file changed, 3 insertions(+)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>