Page 4 of 4 FirstFirst ... 234
Results 31 to 35 of 35

Thread: sudo fails and Kernel bug

  1. #31
    Join Date
    Mar 2010
    Location
    Squidbilly-Land
    Beans
    22,154
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: sudo fails and Kernel bug

    Code:
    Aug 22 09:27:33 Arctic kernel: [ 3070.906282]  ? ath9k_wmi_cmd+0x1a5/0x1c0 [ath9k_htc]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906287]  skb_release_all+0x26/0x30
    Aug 22 09:27:33 Arctic kernel: [ 3070.906293]  kfree_skb+0x32/0xa0
    Aug 22 09:27:33 Arctic kernel: [ 3070.906301]  ath9k_wmi_cmd+0x1a5/0x1c0 [ath9k_htc]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906311]  ath9k_regread+0x48/0x70 [ath9k_htc]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906332]  ar9285_hw_pa_cal+0x317/0x520 [ath9k_hw]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906348]  ar9002_hw_pa_cal+0x36/0x60 [ath9k_hw]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906362]  ar9002_hw_calibrate+0x102/0x440 [ath9k_hw]
    Aug 22 09:27:33 Arctic kernel: [ 3070.906372]  ath9k_htc_ani_work+0x118/0x1a0 [ath9k_htc]
    Is the crash.
    ath9k is the driver for that wifi USB device. So, yes, the driver or kernel has a bug that is causing the crash. Drivers are loaded into the kernel for performance reasons, but a mistake that bring down the entire machine.

    There could be other issues in other drivers, but this is certainly one. From memory, the bug link above says the kernel is accessing the driver memory that has been freed already. Usually, kernel code wouldn't be specialized for loading, using, unloading and driver, so any problem for this device would be expected to impact every other similar device too. That doesn't appear to be the situations, so I'm strongly guessing the problem is in the driver software and the kernel you have just happens to do things in a way that causes this bug to crash the system.

    Those are my guesses. I could be wrong. My memory could be off, but the fix is a newer kernel which seems to be available, just not in the distribution yet.

  2. #32
    Join Date
    Feb 2011
    Location
    Coquitlam, B.C. Canada
    Beans
    2,886
    Distro
    Ubuntu Development Release

    Re: sudo fails and Kernel bug

    Quote Originally Posted by hans12345 View Post
    and this is what you suggest?
    linux-generic-hwe-20.04_5.4.0.44.48_amd64.deb 5.4.0.44.48 amd64 Ubuntu Proposed Main Official
    Yes.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  3. #33
    Join Date
    Aug 2007
    Location
    Luxembourg
    Beans
    232
    Distro
    Ubuntu 20.04 Focal Fossa

    Re: sudo fails and Kernel bug

    Still no new crash !

  4. #34
    Join Date
    Mar 2010
    Location
    Squidbilly-Land
    Beans
    22,154
    Distro
    Ubuntu Mate 16.04 Xenial Xerus

    Re: sudo fails and Kernel bug

    Quote Originally Posted by hans12345 View Post
    Still no new crash !
    Seems solved. Please use the "thread tools" button near the top to mark it that way.

  5. #35
    Join Date
    Aug 2007
    Location
    Luxembourg
    Beans
    232
    Distro
    Ubuntu 20.04 Focal Fossa

    Thumbs up Re: sudo fails and Kernel bug

    Quote Originally Posted by TheFu View Post
    Seems solved. Please use the "thread tools" button near the top to mark it that way.
    Yes, it is fixed.

    Thanks TheFu, I would never have found the cause of the problem without your help.

Page 4 of 4 FirstFirst ... 234

Tags for this Thread

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •