On 28 Apr, To: stable@freebsd.org wrote:
> I've been upgrading my 8.4-STABLE machines to r264698 and haven't had
> any issues until I tried to upgrade my laptop. I was previously running
> r259528 without any problems, but it now hangs during boot. It's a hard
> hang and the machine doesn't respond to anything, including Caps Lock.
> I took a picture of the screen and compared it to dmesg.boot from
> booting kernel.old and the boot messages appear to be identical up to
> the point where the hang occurs.
I received a hint offline to look at r262226, which tweaked
sys/dev/pci/pci.c. A r262225 kernel boots fine, but r262226 hangs.
I didn't suspect that commit because realloc_bars is set to 0.
I see that there is already a PR for this: kern/kern/188534.
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