Hi Michael, On Thu, Dec 26, 2019 at 11:04:12AM -0800, Michael Cheponis wrote:
> what does this mean? (Received last night on RPi 3B+ that has been h/w > stable): > > panic: kernel diagnostic assertion "uvmexp.swpgonly + npages <= > uvmexp.swpginuse" failed: file "/c/usr/src/sys/uvm/uvm_pager.c", line 472 > > load averages: 3.32, 3.72, 3.93; up 0+11:45:09 > 09:54:27 UTC > 63 processes: 6 runnable, 53 sleeping, 4 on CPU > CPU0 states: 68.6% user, 0.0% nice, 27.6% system, 3.8% interrupt, 0.0% > idle > CPU1 states: 94.3% user, 0.0% nice, 5.7% system, 0.0% interrupt, 0.0% > idle > CPU2 states: 89.5% user, 0.0% nice, 10.5% system, 0.0% interrupt, 0.0% > idle > CPU3 states: 74.0% user, 0.0% nice, 17.3% system, 8.7% interrupt, 0.0% > idle > Memory: 403M Act, 204M Inact, 13M Wired, 31M Exec, 259M File, 15M Free > Swap: 3425M Total, 7912K Used, 3418M Free > > [ 1.0000000] NetBSD 9.99.17 (GENERIC) #2: Wed Nov 13 09:59:13 UTC 2019 > [ 1.0000000] [email protected]: > /c/usr/src/sys/arch/evbarm/compile/obj/GENERIC > > after reboot: > > # swapctl -l > Device 1K-blocks Used Avail Capacity Priority > /dev/ld0b 131072 0 131072 0% 1 > /swapfile 3376384 0 3376384 0% 2 > Total 3507456 0 3507456 0 > > So it seems like there was plenty of Swap available. I just removed this assertion with rev 1.118 of src/sys/uvm/uvm_pager.c. The assertion itself is not safe and can race on a multi-CPU machine. Andrew
