Messages in this thread | | | Subject | Re: [PATCH V5] rxe: Fix a sleep-in-atomic bug in post_one_send | From | Doug Ledford <> | Date | Tue, 13 Jun 2017 17:01:52 -0400 |
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On Mon, 2017-06-05 at 20:23 +0800, Jia-Ju Bai wrote: > The driver may sleep under a spin lock, and the function call path > is: > post_one_send (acquire the lock by spin_lock_irqsave) > init_send_wqe > copy_from_user --> may sleep > > There is no flow that makes "qp->is_user" true, and copy_from_user > may > cause bug when a non-user pointer is used. So the lines of > copy_from_user > and check of "qp->is_user" are removed. > > Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Thanks, applied.
-- Doug Ledford <dledford@redhat.com> GPG KeyID: B826A3330E572FDD Key fingerprint = AE6B 1BDA 122B 23B4 265B 1274 B826 A333 0E57 2FDD
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