On Mon, Oct 19, 2020 at 04:39:54PM -0400, Mark Johnston wrote: > > I think vmspace_exit() should issue a release fence with the cmpset and > an acquire fence when handling the refcnt == 1 case, but I don't see why > that would make a difference here. So, if you can test a debug patch, > this one will yield a bit more debug info. If you can provide access to > a vmcore and kernel debug symbols, that'd be even better. >
I haven't seen an invalid pmap panic since the report of October 5th. Your patch applied cleanly on the Pi3 running HEAD at r366780M, the M being due to patches supplied by Kyle Evans applied to M sys/arm/broadcom/bcm2835/bcm2835_mbox.c M sys/arm/broadcom/bcm2835/bcm2835_sdhci.c M sys/arm/broadcom/bcm2835/bcm2835_vcbus.c M sys/arm/broadcom/bcm2835/bcm2835_vcbus.h AIUI, they're something to do with DMA for peripherals. They've caused no obvious trouble, if you anticipate conflicts let me know and I'll remove them I've never seen either a vmcore file or debug symbols on this machine. A sequence of instructions to generate the data needed would be helpful. Thanks for reading! bob prohaska _______________________________________________ freebsd-current@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
