linux-kernel - Re: [PATCH] drm/msm: fix msm_gem_vma_new() allocations for managed GPUVMs

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <qpde4x3tcultagjpflm6u4xulm5b3xs6ek54kek3sriyrneefk@tgygc5zeoxfk>
Date: Sat, 23 Aug 2025 16:50:22 +0300
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Rob Clark <rob.clark@....qualcomm.com>
Cc: Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Matthew Brost <matthew.brost@...el.com>,
        Himal Prasad Ghimiray <himal.prasad.ghimiray@...el.com>,
        Danilo Krummrich <dakr@...nel.org>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Danct12 <danct12@...root.org>
Subject: Re: [PATCH] drm/msm: fix msm_gem_vma_new() allocations for managed
 GPUVMs

On Fri, Aug 22, 2025 at 05:14:02PM -0700, Rob Clark wrote:
> On Fri, Aug 22, 2025 at 5:12 PM Dmitry Baryshkov
> <dmitry.baryshkov@....qualcomm.com> wrote:
> >
> > Since commit 3309323241fb ("drm/gpuvm: Kill drm_gpuva_init()") MSM
> > driver fails to init, failing with "[drm:msm_gpu_init] *ERROR* could not
> > allocate memptrs: -22" errors. The mentioned commit reworked the
> > function, but didn't take into account that op_map is initialized at the
> > top of the function, while ranges might change if GPUVM is managed by
> > the kernel.
> >
> > Move op_mode initialization after finalizing all addresses and right
> > before the drm_gpuva_init_from_op() call.
> >
> > Reported-by: Danct12 <danct12@...root.org>
> > Fixes: 3309323241fb ("drm/gpuvm: Kill drm_gpuva_init()")
> > Suggested-by: Rob Clark <robin.clark@....qualcomm.com>
> > Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
> > ---
> >  drivers/gpu/drm/msm/msm_gem_vma.c | 13 +++++++------
> >  1 file changed, 7 insertions(+), 6 deletions(-)
> >
> 
> Thanks,
> 
> Reviewed-by: Rob Clark <rob.clark@....qualcomm.com>

I'll also need Acked-by to merge through drm-misc-next, where the
offending commit is.


-- 
With best wishes
Dmitry