Messages in this thread | | | Date | Fri, 29 Jun 2018 19:55:30 -0500 | From | Segher Boessenkool <> | Subject | Re: [Update] Regression in 4.18 - 32-bit PowerPC crashes on boot - bisected to commit 1d40a5ea01d5 |
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On Fri, Jun 29, 2018 at 02:01:46PM -0700, Linus Torvalds wrote: > On Fri, Jun 29, 2018 at 1:42 PM Larry Finger <Larry.Finger@lwfinger.net> wrote: > But the real question is what the problem was the *first* time around. > I assume that has scrolled off the screen? This part: > > _exception_pkey+0x58/0x128 > ret_from_except_full+0x0/0x4 > --- interrupt: 700 at free_pgd_range+0x19c/0x30c > LR = free_pgd_range+0x19c/0x30c > free_pgtables+0xa/0xb > exit_mnap+0xf4/0x16c > mmput+0x64/0xf0 > > Does reverting that commit 1d40a5ea01d5 make everything work for you? > Because if so, judging by the deafening silence on this so far, I > think that's what we should do. > > That said, can some ppc person who knows the 32-bit ppc code and maybe > knows what that "interrupt: 700" means talk about that oddity in the > trace, please?
700 is "program interrupt"; here it probably means a BUG() happened (which does a trap instruction, which causes a 700). The stuff that scrolled away should tell more.
Segher
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