WaaG BSOD occur after Windows Update #8755
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yichongt
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Feb 21, 2025
In current code process, hyperv data in struct vm_arch is never cleared during VM shutdown and is retained to next VM launch. As the enabled bit of hypercall_page msr is not clear, hypercall page might cause fatal error such as Windows VM BSOD during VM restart and memory remapping. Hyperv page destory function can ensure hyperv page is destory during each VM shutdown so hyperv related config such as hypercall page is established correctly during each VM launch. Tracked-On: projectacrn#8755 Signed-off-by: Yichong Tang <[email protected]>
acrnsi-robot
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Mar 10, 2025
In current code process, hyperv data in struct vm_arch is never cleared during VM shutdown and is retained to next VM launch. As the enabled bit of hypercall_page msr is not clear, hypercall page might cause fatal error such as Windows VM BSOD during VM restart and memory remapping. Hyperv page destory function can ensure hyperv page is destory during each VM shutdown so hyperv related config such as hypercall page is established correctly during each VM launch. Tracked-On: #8755 Signed-off-by: Yichong Tang <[email protected]>
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Describe the bug
WaaG BSOD occur after Windows security update and reboot. Error code is 0xc0000225 without extra information. If there is recovery partition in WaaG image, it will enter recovery environment.
Platform
Issue is reproduced on RPL-P, ADL and TGL.
Codebase
ACRN master and release_3.3
Scenario
Industry
To Reproduce
Steps to reproduce the behavior:
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