Hello everyone,

since a recent update on a Debian sid system, most X applications fail
to start and get killed by the kernel due to a null pointer exception.
The frame of the application window blinks shortly, then the application
gets killed, eg:

Aug 07 21:25:14 glaurung kernel: BUG: kernel NULL pointer dereference, address: 0000000000000000
Aug 07 21:25:14 glaurung kernel: #PF: supervisor read access in kernel mode
Aug 07 21:25:14 glaurung kernel: #PF: error_code(0x0000) - not-present page
Aug 07 21:25:14 glaurung kernel: PGD 0 P4D 0
Aug 07 21:25:14 glaurung kernel: Oops: 0000 [#4] PREEMPT SMP PTI
Aug 07 21:25:14 glaurung kernel: CPU: 2 PID: 2063 Comm: openttd Tainted: G D OE 6.9.10-amd64 #1 Debian 6.9.10-1
Aug 07 21:25:14 glaurung kernel: RIP: 0010:nvkm_gr_units+0x9/0x30 [nouveau]

I downgraded the kernel and the libdrm-nouveau2 package to versions I
know were functional two weeks ago, but that didn’t change the error.
What could be the problem, and what would be a possible solution?

Kind regards,
Harald

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