On Wed, 26 Jun 2019, Christophe Leroy wrote: > Hi Finn, > > On 06/26/2019 02:06 AM, Finn Thain wrote: > > Hi Christophe, > > > > I received a report of a regression between v5.0 and v5.1 which causes > > the current release to crash during boot with a machine check > > exception. Please see console log below. > > > > Stan (whom I've Cc'd) tells me that this happens on every attempt to > > boot. I asked him to try 'git bisect'. The results are given below. > > Can you see anything in commit 93c4a162b014 that might explain this? > > Might be a false positive. That commit has a problem, but that problem > is fixed by 4622a2d43101 ("powerpc/6xx: fix setup and use of > SPRN_SPRG_PGDIR for hash32") > > I would bet your problem is related to commit f7354ccac844 ("powerpc/32: > Remove CURRENT_THREAD_INFO and rename TI_CPU"). That problem is fixed by > commit 397d2300b08c ("powerpc/32s: fix flush_hash_pages() on SMP") > upstream, and in linux 5.1.4 by commit fda49aec2515 on > stable/linux-5.1.y >
I see. I've just discovered that this issue has already been covered on this list. I should have done a bit more research. > Can you test ? > Stan did some more tests and confirmed that the problem has been fixed in 397d2300b08c and stable/linux-5.1.y. Thanks. -- > Thanks > Christophe >