在 2023/4/13 16:23, Leon Romanovsky 写道:
On Mon, Apr 10, 2023 at 11:08:15PM +0800, Zhu Yanjun wrote:
在 2023/4/4 14:38, Zhu Yanjun 写道:
From: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
In the function rxe_create_qp(), rxe_qp_from_init() is called to
initialize qp, internally things like rxe_init_task are not setup until
rxe_qp_init_req().
If an error occures before this point then the unwind will call
rxe_cleanup() and eventually to rxe_qp_do_cleanup()/rxe_cleanup_task()
which will oops when trying to access the uninitialized spinlock.
If rxe_init_task is not executed, rxe_cleanup_task will not be called.
Reported-by: syzbot+cfcc1a3c85be15a40cba@xxxxxxxxxxxxxxxxxxxxxxxxx
Link: https://syzkaller.appspot.com/bug?id=fd85757b74b3eb59f904138486f755f71e090df8
Fixes: 8700e3e7c485 ("Soft RoCE driver")
Fixes: 2d4b21e0a291 ("IB/rxe: Prevent from completer to operate on non valid QP")
Signed-off-by: Zhu Yanjun <yanjun.zhu@xxxxxxxxx>
---
V1 -> V2: Remove memset functions;
Gently ping
It doesn't apply to rdma-next.
The latest commit is based on rdma-next:
https://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
Branch: remotes/origin/wip/leon-for-next
Thanks,
Zhu Yanjun
Thanks
