** Changed in: linux-oem-6.5 (Ubuntu Jammy)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2047461
Title:
drm: Update file owner during use
Status in linux package in Ubuntu:
In Progress
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Invalid
Status in linux-oem-6.5 source package in Jammy:
Fix Committed
Status in linux source package in Mantic:
In Progress
Status in linux-oem-6.5 source package in Mantic:
Invalid
Status in linux source package in Noble:
In Progress
Status in linux-oem-6.5 source package in Noble:
Invalid
Bug description:
[Impact]
Our testing tools need to check the app runs on which GPU, and now it only
shows the processes as Xorg or XWayland
$ cat /sys/kernel/debug/dri/0/clients
command pid dev master a uid magic
Xorg 2344 0 y y 0 0
Xorg 2344 0 n y 0 2
Xorg 2344 0 n y 0 3
Xorg 2344 0 n y 0 4
[Fix]
The commit from v6.7-rc1 fixes the issue
$ cat /sys/kernel/debug/dri/0/clients
command tgid dev master a uid magic
Xorg 830 0 y y 0 0
xfce4-session 880 0 n y 0 1
xfwm4 943 0 n y 0 2
neverball 1095 0 n y 0 3
[Test case]
1. check processes by 'cat /sys/kernel/debug/dri/0/clients'
2. runs glxgears(specify the GPU if needed)
3. check the precesses again and there should be a 'glxgears' process
[Where problems could occur]
This commit added some protections on read/write and only changes the
process' pid, the worst case is that the process got the wrong pid as its owner.
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