Fix Use-After-Free in Hisilicon QM Driver (crypto: hisilicon/qm)

From this webpage screenshot, we can extract the following key information about the vulnerability: 1. Vulnerability Description: - Issue Description: When the accelerator core reports a memory error, the master ooo cannot be fully shut down. Therefore, the driver must inject a q0 error immediately after stopping the queue to shut down the master ooo. - Fix: After stopping the queue, memory may be released, causing the device to access freed memory. The fix involves injecting the error before stopping the queue to ensure the device does not access released memory. 2. Fix Code: - Code Changes: New functions and logic were added to handle the injection of q0 errors. - Specific Modifications: - Added the function to set the VF error state. - Modified the function to handle q0 error injection. - Modified the and functions to prepare for VF reset. - Modified the function to check the master ooo status. 3. Scope of Fix: - Files Modified: The file was modified. - Lines Changed: 47 lines were modified, including 24 insertions and 23 deletions. 4. Fix Contributors: - Author: Weili Qian - Committer: Greg Kroah-Hartman - Sign-offs: Weili Qian, Herbert Xu, Sasha Levin 5. Related Patches: - Upstream Patch: b04f06fc0243600665b3b50253869533b7938468 - Fix Patch: 6c6dd5802c2d ("crypto: hisilicon/qm - add controller reset interface") This information indicates that the issue where the master ooo could not be fully shut down when the accelerator core reported a memory error has been resolved by injecting a q0 error before stopping the queue.

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Fix Use-After-Free in Hisilicon QM Driver (crypto: hisilicon/qm)