Re: earmv7hf panic

[tlaronde%polynum.com@localhost]

Hello,

On Thu, Jul 18, 2019 at 03:45:46PM +0200, Manuel Bouyer wrote:
> Hello,
> I updated a olimex lime2 board (allwinner A20) with an up to date kernel,
> and it panics with:
> 
> [   4.6949594] panic: VFP fault at 0x80073d78 in non-user mode
> [   4.6949594] cpu1: Begin traceback...
> [   4.7049580] 0x99eebb9c: netbsd:db_panic+0x14
> [   4.7049580] 0x99eebbb4: netbsd:vpanic+0x194
> [   4.7149586] 0x99eebbcc: netbsd:snprintf
> [   4.7149586] 0x99eebc7c: netbsd:vfp_attach
> [   4.7249615] 0x99eebd34: netbsd:undefinedinstruction+0x10c
> [   4.7249615] 0x99eebdf4: netbsd:address_exception_entry+0x5c
> [   4.7349674] 0x99eebe54: netbsd:pcu_load+0x17c
> [   4.7349674] 0x99eebef4: netbsd:vfp_handler+0x50
> [   4.7449618] 0x99eebfac: netbsd:undefinedinstruction+0x10c
> [   4.7549647] cpu1: End traceback...
> Stopped in pid 2.1 (sh) at      netbsd:cpu_Debugger+0x4:        bx      r14
> 
> (it can also happen on cpu0).
> 
> Another board with a different userland doen't have this problem.
> Also, rebooting with an older kernel avoid the problem.
> I tried booting from tftp or from local sdcard, with uboot or EFI, with
> the same result.
> Any idea ?
> 

Just for the record, since I'm playing with an Olimex Lime2, too.

I use a netbsd-current from 2019-07-12 (19:42 GMT) and have seen no
problem yet. My userland is, for the moment, just the basic sets and
rc.conf is just a trimmed down version with the minimum (dhcpcd, ntpd,
sshd, devpubd, wscons).

I will configure for compilation (since some packages I need can't be
cross-compiled) and after that will use more than the basic sets.

There have been reports with bad linked objects and, if I'm not
mistaken, specifically with c++ libraries. A problem with the building
framework. (I have found a bug report for FreeBSD where they were
linking with a start code that went supplementary to the csu start
code---for the record too, since I don't know if this is the problem;
but symptoms were the same).

FWIW,
-- 
        Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
                     http://www.kergis.com/
                       http://www.sbfa.fr/
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