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Date: Fri, 14 Feb 2020 11:20:39 -0500 From: Sasha Levin <sashal@...nel.org> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org Cc: YueHaibing <yuehaibing@...wei.com>, Ben Skeggs <bskeggs@...hat.com>, Sasha Levin <sashal@...nel.org>, dri-devel@...ts.freedesktop.org, nouveau@...ts.freedesktop.org Subject: [PATCH AUTOSEL 4.9 099/141] drm/nouveau: Fix copy-paste error in nouveau_fence_wait_uevent_handler From: YueHaibing <yuehaibing@...wei.com> [ Upstream commit 1eb013473bff5f95b6fe1ca4dd7deda47257b9c2 ] Like other cases, it should use rcu protected 'chan' rather than 'fence->channel' in nouveau_fence_wait_uevent_handler. Fixes: 0ec5f02f0e2c ("drm/nouveau: prevent stale fence->channel pointers, and protect with rcu") Signed-off-by: YueHaibing <yuehaibing@...wei.com> Signed-off-by: Ben Skeggs <bskeggs@...hat.com> Signed-off-by: Sasha Levin <sashal@...nel.org> --- drivers/gpu/drm/nouveau/nouveau_fence.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_fence.c b/drivers/gpu/drm/nouveau/nouveau_fence.c index 4bb9ab892ae19..78e521d00251c 100644 --- a/drivers/gpu/drm/nouveau/nouveau_fence.c +++ b/drivers/gpu/drm/nouveau/nouveau_fence.c @@ -158,7 +158,7 @@ nouveau_fence_wait_uevent_handler(struct nvif_notify *notify) fence = list_entry(fctx->pending.next, typeof(*fence), head); chan = rcu_dereference_protected(fence->channel, lockdep_is_held(&fctx->lock)); - if (nouveau_fence_update(fence->channel, fctx)) + if (nouveau_fence_update(chan, fctx)) ret = NVIF_NOTIFY_DROP; } spin_unlock_irqrestore(&fctx->lock, flags); -- 2.20.1
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