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kern/55702: panic: kernel diagnostic assertion "(pg->flags & PG_PAGEOUT) == 0" failed
>Synopsis: panic: kernel diagnostic assertion "(pg->flags & PG_PAGEOUT) == 0" failed
>Arrival-Date: Wed Oct 07 21:10:00 +0000 2020
NetBSD 9.99.73 NetBSD 9.99.73 (GENERIC) #0: Tue Oct 6 16:39:23 UTC 2020 mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
Copying ~ 600 GB of data using rsync (with flags: -aH)
read-only mounted ffs filesystem on a cgd on a SATA drive ("spinning rust") plugged to a notebook using usb-sata adapter (connected to xhci)
zfs filesystem on a cgd on a SSD drive
results (happened two times in a row after 10 - 20 GB of transferred data) in the following panic:
kernel diagnostic assertion "(pg->flags & PG_PAGEOUT) == 0" failed: file "/home/source/ab/HEAD/src/sys/uvm/uvm_page.c", line 1616
The assertion was added in the following commit ~ 16 years ago:
"uvm_page_unbusy: add assertions and comments about PG_RELEASED anon pages."
The system has a dual-core CPU, 16 GB RAM and 16 GB of swap (vm.swap_encrypt=1). There was no other significant activity during the copying.
I have photos of the panic, backtrace and registers. Backtrace:
The panic occurred twice in a row so I believe I can trigger it again if more information is required, please let me know what information you need in that case.
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