Hello. I have such a problem: sometimes during a file download (archive, directory, it doesn't matter) either to the cloud or external resources (less often on a local network), Kernel Panic occurs. Managed to get a core dump. Its contents are:

crash: invalid kernel virtual address: 0 type: "fill_thread_info" crash: invalid task address: ffff8801f99d1380 crash: invalid kernel virtual address: 0 type: "fill_thread_info" crash: invalid task address: ffff8801f99d0780 KERNEL: /usr/lib/debug/vmlinux-4.3.0-0.bpo.1-amd64 DUMPFILE: /var/crash/201605021719/dump.201605021719 [PARTIAL DUMP] CPUS: 4 DATE: Mon May 2 17:19:22 2016 UPTIME: 03:39:47 LOAD AVERAGE: 0.22, 0.49, 0.45 TASKS: 485 NODENAME: Debian-PC RELEASE: 4.3.0-0.bpo.1-amd64 VERSION: #1 SMP Debian 4.3.5-1~bpo8+1 (2016-02-23) MACHINE: x86_64 (3192 Mhz) MEMORY: 7.8 GB PANIC: "BUG: unable to handle kernel paging request at ffff8801f9a43000" PID: 0 COMMAND: "swapper/2" TASK: ffff88023223a180 (1 of 4) [THREAD_INFO: ffff880232240000] CPU: 2 STATE: TASK_RUNNING (PANIC)

At first I thought it was about Zswap. Cut it off - the situation has not changed. This does not happen often, so it is impossible to give an approximate periodicity. Maybe a week everything works fine, and then fall. Debian 8.4 system, kernel 4.3 (tried newer ones, but Crash does not read their dumps). The system is also updated from backports.

  • Well, this is clearly not the whole dump. As you get the whole, immediately send it to linuha torvald. - Sergey

1 answer 1

Maybe the disk fell on which SWAP partition is located?

  • Check out how zSwap works. Good thing :) - Vasily Barbashev
  • @ Vasily Barbashev, how can a good thing save you from failing to read? I do not understand. - sergw