Messages in this thread |  | | From | Chenghai Huang <> | | Subject | [PATCH v6 0/4] uacce: driver fixes for memory leaks and state management | | Date | Tue, 2 Dec 2025 14:12:52 +0800 |
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This patch series addresses several issues in the uacce: 1.Fix cdev handling in the cleanup path. 2.Fix sysfs file creation conditions. 3.Add error reporting for unsupported mremap operations. 4.Ensuring safe queue release with proper state management.
--- Changes in v6: - In patch 1, if cdev_device_add() fails, it will automatically free the cdev, however, we need to set uacce->cdev to NULL to prevent cdev_device_del() from being called. - Link to v5: https://lore.kernel.org/all/20251111093536.3729-1-huangchenghai2@huawei.com/
Changes in v5: - There is no memory leak issue when cdev_device_add fails, but it is necessary to check a flag to avoid calling cdev_device_del during abnormal exit. - Link to v4: https://lore.kernel.org/all/20251022021149.1771168-1-huangchenghai2@huawei.com/
Changes in v4: - Revert the interception of sysfs creation for isolate_strategy. - Link to v3: https://lore.kernel.org/all/20251021135003.786588-1-huangchenghai2@huawei.com/
Changes in v3: - Move the checks for the 'isolate_strategy_show' and 'isolate_strategy_store' functions to their respective call sites. - Use kobject_put to release the cdev memory instead of modifying cdev to be a static structure member. - Link to v2: https://lore.kernel.org/all/20250916144811.1799687-1-huangchenghai2@huawei.com/
Changes in v2: - Use cdev_init to allocate cdev memory to ensure that memory leaks are avoided. - Supplement the reason for intercepting the remapping operation. - Add "cc: stable@vger.kernel.org" to paths with fixed. - Link to v1: https://lore.kernel.org/all/20250822103904.3776304-1-huangchenghai2@huawei.com/
Chenghai Huang (2): uacce: fix isolate sysfs check condition uacce: ensure safe queue release with state management
Wenkai Lin (1): uacce: fix cdev handling in the cleanup path
Yang Shen (1): uacce: implement mremap in uacce_vm_ops to return -EPERM
drivers/misc/uacce/uacce.c | 48 +++++++++++++++++++++++++++++++------- 1 file changed, 40 insertions(+), 8 deletions(-)
-- 2.33.0
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