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Date: Wed, 30 Dec 2020 07:31:25 +0200 From: Leon Romanovsky <leon@...nel.org> To: trix@...hat.com Cc: selvin.xavier@...adcom.com, devesh.sharma@...adcom.com, dledford@...hat.com, jgg@...pe.ca, maxg@...lanox.com, galpress@...zon.com, michaelgur@...dia.com, monis@...lanox.com, gustavoars@...nel.org, linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH] RDMA/ocrdma: fix use after free in ocrdma_dealloc_ucontext_pd() On Tue, Dec 29, 2020 at 06:46:53PM -0800, trix@...hat.com wrote: > From: Tom Rix <trix@...hat.com> > > In ocrdma_dealloc_ucontext_pd() uctx->cntxt_pd is assigned to > the variable pd and then after uctx->cntxt_pd is freed, the > variable pd is passed to function _ocrdma_dealloc_pd() which > dereferences pd directly or through its call to > ocrdma_mbx_dealloc_pd(). > > Reorder the free using the variable pd. > > Fixes: 21a428a019c9 ("RDMA: Handle PD allocations by IB/core") > Signed-off-by: Tom Rix <trix@...hat.com> > --- > drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > Thanks, Reviewed-by: Leon Romanovsky <leonro@...dia.com>
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