Control: tag -1 moreinfo On Mon, 2020-10-05 at 01:05 +0100, Piotr Drozdek wrote: > Package: src:linux > Version: 5.7.10-1~bpo10+1 > Severity: normal > > Dear Maintainer, > > *** Reporter, please consider answering these questions, where appropriate *** > > * What led up to the situation? > > Running normally for 30 days already > > * What exactly did you do (or not do) that was effective (or > ineffective)? > > Did nothing, running as normal. Process glances is running in the screen > session and it's providing data to InfluxDB + Grafana. Process glances may or > may not have it's own bugs, but it should not crash with BUG messages I > experienced Indeed it should not. > * What was the outcome of this action? > total glances crash, process had to be restarted by script > > * What outcome did you expect instead? > no crash > > *** End of the template - remove these template lines *** > > dmesg: > [Sat Oct 3 07:18:41 2020] swap_info_get: Bad swap offset entry 3fffffffffeff This looks like a page table entry that was supposed to be clear, but has one bit set. That caused it to be interpreted as a swap entry, and because swap offsets are stored inverted on x86 it was decoded to an offset with all but one bit set. Such a bit flip could be caused by a software bug, but could equally be a hardware fault. It's probably worth doing a RAM test (memtest86+) and checking that the CPU is properly cooled. > [Sat Oct 3 07:18:41 2020] BUG: Bad page map in process glances pte:00020000 > pmd:344a58067 > [Sat Oct 3 07:18:41 2020] addr:00007f39fe53b000 vm_flags:08000070 > anon_vma:0000000000000000 mapping:ffff9ab88678bfd8 index:174 > [Sat Oct 3 07:18:41 2020] file:_sfc64.cpython-37m-x86_64-linux-gnu.so > fault:filemap_fault mmap:btrfs_file_mmap [btrfs] readpage:btrfs_readpage > [btrfs] > [Sat Oct 3 07:18:41 2020] CPU: 11 PID: 1342447 Comm: glances Tainted: P > OE 5.7.0-0.bpo.2-amd64 #1 Debian 5.7.10-1~bpo10+1 [...] You are using the nvidia proprietary driver, and that could also be to blame. Please test whether the issue is reproducible without this driver. Ben. -- Ben Hutchings If you seem to know what you are doing, you'll be given more to do.
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