https://bugs.freedesktop.org/show_bug.cgi?id=108381
Bug ID: 108381
Summary: amdgpu_bo_import and amdgpu_bo_free are not paired
which leaks amdgpu_bo
Product: Mesa
Version: 18.2
Hardware: All
OS: Linux (All)
Status: NEW
Severity: major
Priority: medium
Component: Drivers/Gallium/radeonsi
Assignee: [email protected]
Reporter: [email protected]
QA Contact: [email protected]
Created attachment 142039
--> https://bugs.freedesktop.org/attachment.cgi?id=142039&action=edit
sample code to reproduce the issue
amdgpu_bo is reference counted, libdrm expects the number of calls to
amdgpu_bo_import must be equal to amdgpu_bo_free.
When importing prime fd into mesa, amdgpu_bo_from_handle will be called, which
calls amdgpu_bo_import to get the unique handle (which in fact is a pointer to
amdgpu_bo), then wrapped into amdgpu_winsys_bo object.
The problem is amdgpu_winsys_bo is also reference counted, if one tries to
import the same prime fd for multiple times, amdgpu_bo_import will be called
for multiple times, but only one amdgpu_winsys_bo will be created, so
amdgpu_bo_free will be called for only once, eventually leaks memory.
I have attached a sample code to reproduce this issue.
a possible solution is to call amdgpu_bo_free after amdgpu_bo_import if
result.buf_handle can be found in ws->bo_export_table, which will balance the
number of calls to amdgpu_bo_import and amdgpu_bo_free.
--
You are receiving this mail because:
You are the assignee for the bug._______________________________________________
dri-devel mailing list
[email protected]
https://lists.freedesktop.org/mailman/listinfo/dri-devel
