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RT-AC5300 " External imprecise Data abort" errors

Discussion in 'ASUS AC Routers & Adapters' started by corgi, Jul 11, 2019.

  1. corgi

    corgi Occasional Visitor

    Joined:
    May 11, 2019
    Messages:
    10
    AC5300, latest firmware 3.0.0.4.384_45717 - Master

    AC5300, AI mesh node

    Recently and seemingly at random times, the entire system log fills with errors that look like this:


    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x7e3ffea0, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:00 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:01 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:02 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:02 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:03 kernel: External imprecise Data abort at addr=0x15004, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:04 kernel: External imprecise Data abort at addr=0x2aeb9424, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:04 kernel: External imprecise Data abort at addr=0x2ace15ab, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:04 kernel: External imprecise Data abort at addr=0x2ace15ab, fsr=0x1406, pc=0x80051be8 lr=0x80051be4 ignored.
    Jul 10 23:49:04 kernel: External imprecise Data abort at addr=0x2ace15ab, fsr=0x1406, pc=0x8005cd9c lr=0x80099470 ignored.
    Jul 10 23:49:04 kernel: External imprecise Data abort at addr=0x2ace15ab, fsr=0x1406, pc=0x2aae9370 lr=0x2d3b8 ignored.

    When this starts happening (no idea what's causing this as the logs don't indicate anything before it starts) the entire GUI slows down to a crawl, and the wifi becomes problematic. You can't connect to the wifi (it will say the correct password is incorrect) and router itself can slow down to the point where internet connection is lost over wired connections.

    Can someone explain what these errors are and how they are being caused? Some other threads hypothesized that their routers were hacked. Is this being generated by a feature on the AC5300 that can be safely disabled somehow? The only fix for this is a full reboot of the router. It is using the latest firmware on the asus website though this error isnt unique to this particular router model.

    I already RMA'd one AC5300 which had similar issues. The configuration is default without minimum install. I have not tried Merlin's alpha AImesh enabled firmware and this issue makes me wonder if its AImesh related and whether setting it back up as an master + AP router would eliminate this issue with less hassle.
     
    Last edited: Jul 11, 2019
  2. OzarkEdge

    OzarkEdge Very Senior Member

    Joined:
    Feb 14, 2018
    Messages:
    1,621
    Location:
    USA
    Perhaps failing hardware, or a bad firmware install.

    My shot in the dark would be to re-install the firmware, reset to factory defaults, configure minimally from scratch, and see how it performs... in that order.

    OE
     
    L&LD likes this.
  3. sfx2000

    sfx2000 Part of the Furniture

    Joined:
    Aug 11, 2011
    Messages:
    14,222
    Location:
    San Diego, CA
    Data Aborts - at a low level, something is try to read or write to an illegal memory location.

    as @OzarkEdge mentions - try a rescue reflash with factory firmware, and reconfigure.
     
  4. corgi

    corgi Occasional Visitor

    Joined:
    May 11, 2019
    Messages:
    10
    Is it normal to have one or two a day rather than the entire log being filled?