RDMA/rxe: Fix "kernel NULL pointer dereference" error
authorZhu Yanjun <yanjun.zhu@linux.dev>
Mon, 22 Aug 2022 01:16:13 +0000 (21:16 -0400)
committerLeon Romanovsky <leonro@nvidia.com>
Wed, 31 Aug 2022 06:53:12 +0000 (09:53 +0300)
commita625ca30eff806395175ebad3ac1399014bdb280
tree7e5e33b711d83b0304e0833bca99f96e76551fb2
parentbfb3bde95479e7072839564ec90dbf5d00bfb9b1
RDMA/rxe: Fix "kernel NULL pointer dereference" error

When rxe_queue_init in the function rxe_qp_init_req fails,
both qp->req.task.func and qp->req.task.arg are not initialized.

Because of creation of qp fails, the function rxe_create_qp will
call rxe_qp_do_cleanup to handle allocated resource.

Before calling __rxe_do_task, both qp->req.task.func and
qp->req.task.arg should be checked.

Fixes: 8700e3e7c485 ("Soft RoCE driver")
Link: https://lore.kernel.org/r/20220822011615.805603-2-yanjun.zhu@linux.dev
Reported-by: syzbot+ab99dc4c6e961eed8b8e@syzkaller.appspotmail.com
Signed-off-by: Zhu Yanjun <yanjun.zhu@linux.dev>
Reviewed-by: Li Zhijian <lizhijian@fujitsu.com>
Reviewed-by: Bob Pearson <rpearsonhpe@gmail.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
drivers/infiniband/sw/rxe/rxe_qp.c