Hi, I recently dusted off some sparc systems, to help testing latest versions and such (https://www.youtube.com/watch?v=10q2OxHAzQ4&t=500s). On my Ultra 30 I get some BUG printk in dmesg: [ 0.000145] PROMLIB: Sun IEEE Boot Prom 'OBP 3.9.5 1997/04/11 10:03' [ 0.000168] PROMLIB: Root node compatible: [ 0.000251] Linux version 4.16.2-dist (root@xxxxxxxxxxxxxxxxxxxxxx) (gcc version 5.3.0 (GCC)) #1 SMP Tue Apr 17 08:21:44 Local time zone must be set--see zic [ 0.000828] bootconsole [earlyprom0] enabled [ 0.000835] ARCH: SUN4U … [ 3290.076290] BUG: Bad rss-counter state mm:00000000e37e5ba7 idx:1 val:1 [ 3290.080937] BUG: non-zero pgtables_bytes on freeing mm: 8192 -- René Rebe, ExactCODE GmbH, Lietzenburger Str. 42, DE-10789 Berlin https://exactcode.com | https://t2sde.org | https://rene.rebe.de -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html