* [PATCH -next] gpu: host1x: fix error return code in host1x_memory_context_list_init()
@ 2022-07-14 3:11 ` Yang Yingliang
0 siblings, 0 replies; 2+ messages in thread
From: Yang Yingliang @ 2022-07-14 3:11 UTC (permalink / raw)
To: linux-kernel, linux-tegra, dri-devel; +Cc: thierry.reding, mperttunen
If context device has no IOMMU, the 'cdl->devs' is freed in error path,
but host1x_memory_context_list_init() doesn't return an error code, so
the module can be loaded successfully, when it's unloading, the
host1x_memory_context_list_free() is called in host1x_remove(), it will
cause double free. Return an error code to fix this.
Fixes: 8aa5bcb61612 ("gpu: host1x: Add context device management code")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/gpu/host1x/context.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/host1x/context.c b/drivers/gpu/host1x/context.c
index b08cf11f9a66..5cf9b98bedd0 100644
--- a/drivers/gpu/host1x/context.c
+++ b/drivers/gpu/host1x/context.c
@@ -74,6 +74,7 @@ int host1x_memory_context_list_init(struct host1x *host1x)
if (!fwspec || !device_iommu_mapped(&ctx->dev)) {
dev_err(host1x->dev, "Context device %d has no IOMMU!\n", i);
device_del(&ctx->dev);
+ err = -EOPNOTSUPP;
goto del_devices;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH -next] gpu: host1x: fix error return code in host1x_memory_context_list_init()
@ 2022-07-14 3:11 ` Yang Yingliang
0 siblings, 0 replies; 2+ messages in thread
From: Yang Yingliang @ 2022-07-14 3:11 UTC (permalink / raw)
To: linux-kernel, linux-tegra, dri-devel; +Cc: thierry.reding, mperttunen
If context device has no IOMMU, the 'cdl->devs' is freed in error path,
but host1x_memory_context_list_init() doesn't return an error code, so
the module can be loaded successfully, when it's unloading, the
host1x_memory_context_list_free() is called in host1x_remove(), it will
cause double free. Return an error code to fix this.
Fixes: 8aa5bcb61612 ("gpu: host1x: Add context device management code")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/gpu/host1x/context.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/gpu/host1x/context.c b/drivers/gpu/host1x/context.c
index b08cf11f9a66..5cf9b98bedd0 100644
--- a/drivers/gpu/host1x/context.c
+++ b/drivers/gpu/host1x/context.c
@@ -74,6 +74,7 @@ int host1x_memory_context_list_init(struct host1x *host1x)
if (!fwspec || !device_iommu_mapped(&ctx->dev)) {
dev_err(host1x->dev, "Context device %d has no IOMMU!\n", i);
device_del(&ctx->dev);
+ err = -EOPNOTSUPP;
goto del_devices;
}
--
2.25.1
^ permalink raw reply related [flat|nested] 2+ messages in thread
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2022-07-14 3:11 [PATCH -next] gpu: host1x: fix error return code in host1x_memory_context_list_init() Yang Yingliang
2022-07-14 3:11 ` Yang Yingliang
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