Bug 2025345

Created attachment 1842908 [details]
kernel-5.14.18 dmesg

1. Please describe the problem:
After upgrading to kernel 5.12.x, I started getting these errors in dmesg:
[    4.070813] kernel: nouveau 0000:01:00.0: ce: ucode exceeds falcon limit(s)
[    4.070815] kernel: nouveau 0000:01:00.0: ce: init failed, -22
[    4.070818] kernel: nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 10312c [ PRIVRING ]
[   48.235115] kernel: nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 103048 [ PRIVRING ]

2. What is the Version-Release number of the kernel:
All kernels starting from
5.12.6-300.fc34.x86_64
and up to
5.14.18-300.fc35.x86_64

3. Did it work previously in Fedora? If so, what kernel version did the issue
   *first* appear?  Old kernels are available for download at
   https://koji.fedoraproject.org/koji/packageinfo?packageID=8 :
Yes. The errors are not present under 5.11.21-300.fc34.x86_64 or earlier.

4. Can you reproduce this issue? If so, please provide the steps to reproduce
   the issue below:
Yes. Boot the system with 5.12.x or newer kernel.

5. Does this problem occur with the latest Rawhide kernel? To install the
   Rawhide kernel, run ``sudo dnf install fedora-repos-rawhide`` followed by
   ``sudo dnf update --enablerepo=rawhide kernel``:
No. It seems to be fixed in 5.16-rc1. Upstream bug report says the same.

6. Are you running any modules that not shipped with directly Fedora's kernel?:
No.

7. Please attach the kernel logs. You can get the complete kernel log
   for a boot with ``journalctl --no-hostname -k > dmesg.txt``. If the
   issue occurred on a previous boot, use the journalctl ``-b`` flag.
Attached.