From: Johnny Liu johnliu@nvidia.com
stable inclusion from stable-v6.6.2 commit 6ff845320605bcb496a4cc6ea5ede9af1cffd89f category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I8IW7G
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...
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[ Upstream commit e889a311f74f4ae8bd40755a2c58d02e1c684fef ]
Original implementation over allocates the memory size for the contexts list. The size of memory for the contexts list is based on the number of iommu groups specified in the device tree.
Fixes: 8aa5bcb61612 ("gpu: host1x: Add context device management code") Signed-off-by: Johnny Liu johnliu@nvidia.com Signed-off-by: Mikko Perttunen mperttunen@nvidia.com Signed-off-by: Thierry Reding treding@nvidia.com Link: https://patchwork.freedesktop.org/patch/msgid/20230901115910.701518-1-cyndis... Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Zheng Zengkai zhengzengkai@huawei.com --- drivers/gpu/host1x/context.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/host1x/context.c b/drivers/gpu/host1x/context.c index a3f336edd991..955c971c528d 100644 --- a/drivers/gpu/host1x/context.c +++ b/drivers/gpu/host1x/context.c @@ -34,10 +34,10 @@ int host1x_memory_context_list_init(struct host1x *host1x) if (err < 0) return 0;
- cdl->devs = kcalloc(err, sizeof(*cdl->devs), GFP_KERNEL); + cdl->len = err / 4; + cdl->devs = kcalloc(cdl->len, sizeof(*cdl->devs), GFP_KERNEL); if (!cdl->devs) return -ENOMEM; - cdl->len = err / 4;
for (i = 0; i < cdl->len; i++) { ctx = &cdl->devs[i];