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drm/msm/gem: Validate lazy VM in GEM_NEW

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Otherwise creating a _NO_SHARE BO before any BOs are mapped could cause
a NPE.

Reported-by: Sashiko <sashiko-bot@kernel.org>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/743104/
Message-ID: <20260729155609.20190-14-robin.clark@oss.qualcomm.com>
This commit is contained in:
Rob Clark
2026-07-29 08:55:50 -07:00
parent df68029e63
commit a6d87a272b
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/drm/msm/msm_gem.c
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@@ -1140,9 +1140,13 @@ int msm_gem_new_handle(struct drm_device *dev, struct drm_file *file,
int ret;
if (flags & MSM_BO_NO_SHARE) {
struct msm_drm_private *priv = dev->dev_private;
struct msm_context *ctx = file->driver_priv;
struct drm_gpuvm *vm = msm_context_vm(dev, ctx);
if (!priv->gpu || !vm)
return UERR(EINVAL, dev, "not supported with shared VM");
r_obj = drm_gpuvm_resv_obj(vm);
}