I have some proprietary kernel module.
And suddenly my system crashed in kdb with such bug:
BUG: bad page state in process <kworker_name> pfn:37751
page:<page_address> count:-1 mapcount:0 mapping:00000000 index:0x0
...
page dumped because: nonzero _count
So how should one understand what exactly does it mean? Unfortunately I can't find any info in the Internet about this bug.
What does pfn:37751 and count:-1 mean? What conclusions can be drawn?
Sorry if obvious.