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5 months ago Logs are required for review from WSL team
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Open similar issues:
- Use pin_user_pages_fast instead of get_user_pages_fast in create_existing_sysmem(drivers/hv/dxgkrnl/dxgvmbus.c) (#11095), similarity score: 0.77
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floracqj
OneBlue
Windows Version
Microsoft Windows [Version 10.0.22631.3527]
WSL Version
2.2.4.0
Are you using WSL 1 or WSL 2?
Kernel Version
5.15.153.1
Distro Version
Ubuntu 22.04
Other Software
No response
Repro Steps
use dxgkio_create_allocation and the CPU memory to create a GPU allocation. the CPU memory is invalid.
Expected Behavior
create_existing_sysmem() check vma sanity first and doesn't try to pin/get_user_pages_fast() if the sanity test fails. It's better to have checks like: do { vma = vma_lookup(mm, start); if (!vma) { // trace error and return } start = min(end, vma->vm_end); } while (start < end);
Actual Behavior
create_existing_sysmem() try to pin/get_user_pages() with invalid vma and get error log: [ 2565.965121] misc dxg: dxgk: create_existing_sysmem: get_user_pages_fast failed: 103 [ 2565.966084] misc dxg: dxgk: dxgkio_create_allocation: Ioctl failed: -12
Diagnostic Logs
No response