Hi, Indeed booting with pci=noaer (as suggested in the other bug) works around this issue as well. I'll use that for the time being.
Thanks for working on it! // David On 2015-12-29 16:58, Bjorn Helgaas wrote: > On Fri, Dec 18, 2015 at 11:30:33AM +0100, David Henningsson wrote: >> Hi Linux PCI maintainers, >> >> My dmesg gets filled with a few lines repeated over and over again: >> >> pcieport 0000:00:1c.0: AER: Corrected error received: id=00e0 >> pcieport 0000:00:1c.0: can't find device of ID00e0 >> pcieport 0000:00:1c.0: AER: Corrected error received: id=00e0 >> pcieport 0000:00:1c.0: PCIe Bus Error: severity=Corrected, >> type=Physical Layer, id=00e0(Receiver ID) >> pcieport 0000:00:1c.0: device [8086:9d14] error >> status/mask=00000001/00002000 >> pcieport 0000:00:1c.0: [ 0] Receiver Error >> >> This happens 10-30 times per second (!), so dmesg fills up quickly. >> The bug is present in both vanilla and Ubuntu kernels. > > This is a pretty obvious bug in our AER code. We normally clear > correctable errors by writing the PCI_ERR_COR_STATUS register in > handle_error_source(). The execution path looks like this: > > aer_isr_one_error > aer_print_port_info > if (find_source_device()) > aer_process_err_devices > handle_error_source > pci_write_config_dword(dev, PCI_ERR_COR_STATUS, ...) > > In this case, find_source_device() printed "can't find device of > ID00e0" [sic] and returned false, so we don't call > aer_process_err_devices(). The error is never cleared, so > we discover it again and again. > > I'll work on fixing this. Incidentally, there's another report > with similar symptoms here: > > https://bugzilla.kernel.org/show_bug.cgi?id=109691 > > Bjorn > -- David Henningsson, Canonical Ltd. https://launchpad.net/~diwic ** Bug watch added: Linux Kernel Bug Tracker #109691 http://bugzilla.kernel.org/show_bug.cgi?id=109691 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1521173 Title: AER: Corrected error received: id=00e0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1521173/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
