From owner-freebsd-mips@freebsd.org  Sun Oct 25 12:22:32 2015
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Date: Sun, 25 Oct 2015 13:22:29 +0100
From: Kurt Jaeger <lists@opsec.eu>
To: freebsd-mips@freebsd.org
Subject: Edge Router Lite, 11-current and vi dumping core ?
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Hi!

I built a very recent 11-current to run on the Ubiquity Edge Router Lite,
using mkerlimage from http://rtfm.net/FreeBSD/ERL/.

If I try to invoke vi via serial console or via remote ssh session,
a crash is recorded on the serial console:

root@erl:~ # uname -a
FreeBSD erl 11.0-CURRENT FreeBSD 11.0-CURRENT #0 r289925M: Sun Oct 25 09:31:34 CET 2015     pi@fc.opsec.eu:/usr/obj/mips.mips64/usr/src/sys/ERL  mips
root@erl:~ #
[invoking vi via SSH on other session]
cpuid = 1
Oct 25 12:05:28 erl kernel: BAD_PAGE_FAULT: pid 1326 tid 100056 (vi), uid 0: pc 0x120013480 got a write fault (type 0x3) at 0x161616b98
Oct 25 12:05:28 erl kernel: Trapframe Register Dump:
Oct 25 12:05:28 erl kernel: zero: 0     at: 0x7fffffffffffffff  v0: 0x161616030 v1: 0xa
Oct 25 12:05:28 erl kernel: a0: 0x120080eb8     a1: 0x15        a2: 0x16        a3: 0x120012068
Oct 25 12:05:28 erl kernel: a4: 0x1602ea270     a5: 0x1602ffa00 a6: 0xff        a6: 0x16060d000
Oct 25 12:05:28 erl kernel: t0: 0       t1: 0   t2: 0x8 t3: 0x120013458
Oct 25 12:05:28 erl kernel: t8: 0x232   t9: 0x1 s0: 0x120011f10 s1: 0x160616000
Oct 25 12:05:28 erl kernel: s2: 0       s3: 0x16067a000 s4: 0   s5: 0x7fffffeb70
Oct 25 12:05:28 erl kernel: s6: 0x1     s7: 0   k0: 0   k1: 0
Oct 25 12:05:28 erl kernel: gp: 0x120089960     sp: 0x7fffffe838        s8: 0x160616010 ra: 0x120013458
Oct 25 12:05:28 erl kernel: sr: 0x808cb3        mullo: 0x30     mulhi: 0        badvaddr: 0x161616b98
Oct 25 12:05:28 erl kernel: cause: 0xc  pc: 0x120013480
Oct 25 12:05:28 erl kernel: Page table info for pc address 0x120013480: pde = 0x9800000005f73000, pte = 0x28000000018fe5a
Oct 25 12:05:28 erl kernel: Dumping 4 words starting at pc address 0x120013480: 
Oct 25 12:05:28 erl kernel: ac430b68 24a50001 14c5fff9 64840008
Oct 25 12:05:28 erl kernel: Page table info for bad address 0x161616b98: pde = 0x98000000050ad000, pte = 0

Any ideas on how I can debug this ?

-- 
pi@opsec.eu            +49 171 3101372                         5 years to go !