Re: Kernel crash at boot time or reboot on ARM64/Hikey

[Daniel Lezcano <daniel.lezcano@linaro.org>]

On Wed, Mar 15, 2017 at 02:42:50PM -0700, Linus Torvalds wrote:
> Should be fixed in current Git already..
> 

The v4.11-rc2 still has the issue.

At appears at boot time or when rebooting and spits a lot of traces:

[ ... ]

** 2467 printk messages dropped ** [   11.218861] 8540: ffff8000223e8550 ffff0000081a7634 ffff8000223e8560 ffff0000081a7634
** 2465 printk messages dropped ** [   11.229744] b980: ffff8000223fb990 ffff0000081a7634 ffff8000223fb9a0 ffff0000081a7634
** 2469 printk messages dropped ** [   11.240638] ee40: ffff80002240ee50 ffff0000081a7634 ffff80002240ee60 ffff0000081a7634
** 2464 printk messages dropped ** [   11.251519] 2260: ffff800022422270 ffff0000081a7634 ffff800022422280 ffff0000081a7634
** 2471 printk messages dropped ** [   11.262418] 5760: ffff800022435770 ffff0000081a7634 ffff800022435780 ffff0000081a7634
** 2468 printk messages dropped ** [   11.273302] 8c00: ffff800022448c10 ffff0000081a7634 ffff800022448c20 ffff0000081a7634
** 2467 printk messages dropped ** [   11.284187] c080: ffff80002245c090 ffff0000081a7634 ffff80002245c0a0 ffff0000081a7634
** 2466 printk messages dropped ** [   11.295069] f4e0: ffff80002246f4f0 ffff0000081a7634 ffff80002246f500 ffff0000081a7634
** 2468 printk messages dropped ** [   11.305967] 2980: ffff800022482990 ffff0000081a7634 ffff8000224829a0 ffff0000081a7634
** 2465 printk messages dropped ** [   11.316851] 5dc0: ffff800022495dd0 ffff0000081a7634 ffff800022495de0 ffff0000081a7634
** 2469 printk messages dropped ** [   11.327742] 9280: ffff8000224a9290 ffff0000081a7634 ffff8000224a92a0 ffff0000081a7634
** 2469 printk messages dropped ** [   11.338625] c740: ffff8000224bc750 ffff0000081a7634 ffff8000224bc760 ffff0000081a7634
** 2471 printk messages dropped ** [   11.349521] fc40: ffff8000224cfc50 ffff0000081a7634 ffff8000224cfc60 ffff0000081a7634

[ ... ]

>      Linus
> 
> On Mar 15, 2017 14:40, "Daniel Lezcano" <daniel.lezcano@linaro.org> wrote:
> 
> >
> > Hi Kirill,
> >
> > I'm facing an issue with my ARM64/Hikey board. The kernel crashes after
> > booting
> > when running services. With the linaro toolchain, the same happens but
> > when I
> > reboot the system.
> >
> > It is hard to see a clear error, as randomly the console shows an infinite
> > dump, a couple of lines saying "Invalid address".
> >
> > I have been asking Vincent to test if its board was crashing and it
> > appears the
> > same happens.
> >
> > After git bisecting, I found this commit is the offending one.
> >
> > c2febafc67734a62196c1b9dfba926412d4077ba is the first bad commit
> > commit c2febafc67734a62196c1b9dfba926412d4077ba
> > Author: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> > Date:   Thu Mar 9 17:24:07 2017 +0300
> >
> >     mm: convert generic code to 5-level paging
> >
> >     Convert all non-architecture-specific code to 5-level paging.
> >
> >     It's mostly mechanical adding handling one more page table level in
> >     places where we deal with pud_t.
> >
> >     Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> >     Acked-by: Michal Hocko <mhocko@suse.com>
> >     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
> >
> > :040000 040000 492678235575b71f88062912e3d2a8f0983a7ab1
> > 1e17bdef1b1ecae4261dd431bc4be67107dfdd5b M      drivers
> > :040000 040000 13e1ad3cf4523bab0e62efe9afa846c53b2738fc
> > 183b6407eea0f34e5132dc67aaae1d8e3e23e555 M      fs
> > :040000 040000 1f90d08acc5850318753d5958f615e3b2a484ec7
> > dcdc7cce85ddbc5b5ef68fcfc77bb2809b4e1115 M      include
> > :040000 040000 9b3446e04a8d7939962c2df710f6113eea696a50
> > f6e627b0d378f0a00d2987fdd0c7b215306e6e3c M      lib
> > :040000 040000 77b15108634671b2286fcefcd3009ea96ba41543
> > 6fc93cb7cb991c2c26b50ce7762ba469e5d4f367 M      mm
> >
> > Was this issue already spotted ?
> >
> > Thanks in advance
> >
> >   -- Daniel
> >
> > --
> >
> >  <http://www.linaro.org/> Linaro.org │ Open source software for ARM SoCs
> >
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> >

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