This is the error that was spamming my system logs:
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Feb 14 18:16:27 mezzani kernel: pcieport 0000:00:01.2: AER: Correctable error message received from 0000:06:00.0
Feb 14 18:16:27 mezzani kernel: nvme 0000:06:00.0: PCIe Bus Error: severity=Correctable, type=Physical Layer, (Receiver ID)
Feb 14 18:16:27 mezzani kernel: nvme 0000:06:00.0:   device [1344:5407] error status/mask=00000001/00002000
Feb 14 18:16:27 mezzani kernel: nvme 0000:06:00.0:    [ 0] RxErr                  (First)




These are the kernel args I used before:
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Feb 14 18:11:37 mezzani kernel: Command line: BOOT_IMAGE=(hd0,gpt2)/vmlinuz-6.18.9-200.fc43.x86_64 root=UUID=57472dac-2e30-4cf6-a700-5d9b2321704a ro rootflags=subvol=root rhgb quiet rd.driver.blacklist=nouveau modprobe.blacklist=nouveau





These are the newer kernel args I'm using (added pcie_aspm.policy=default):
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Feb 14 21:50:11 mezzani kernel: Command line: BOOT_IMAGE=(hd0,gpt2)/vmlinuz-6.18.9-200.fc43.x86_64 root=UUID=57472dac-2e30-4cf6-a700-5d9b2321704a ro rootflags=subvol=root rhgb quiet rd.driver.blacklist=nouveau modprobe.blacklist=nouveau pcie_aspm.policy=default