linux-kernel - Potential NULL pointer deference in RDMA

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Date:   Wed, 9 Oct 2019 21:44:58 -0700
From:   Yizhuo Zhai <yzhai003@....edu>
To:     Moni Shoua <monis@...lanox.com>,
        Doug Ledford <dledford@...hat.com>,
        Jason Gunthorpe <jgg@...pe.ca>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org, Zhiyun Qian <zhiyunq@...ucr.edu>,
        Chengyu Song <csong@...ucr.edu>
Subject: Potential NULL pointer deference in RDMA

Hi All:
drivers/infiniband/sw/rxe/rxe_verbs.c:
The function to_rdev() could return NULL, but no caller in this file
checks the return value but directly dereference them, which seems
potentially unsafe. Callers include rxe_query_device(),
rxe_query_port(), rxe_query_pkey(), etc.

-- 
Kind Regards,

Yizhuo Zhai

Computer Science, Graduate Student
University of California, Riverside