[ts-7000] TS7400 kernel panic!

["ktallevi" <>]

TS7400 board using pppd to make a connection over a GSM modem...
 
(in initial linux):

insmod bootloader.o
bootload -c "console=ttyAM0,115200 root=/dev/mtdblock/3" /mnt/root/
vmlinux.bin

(the kernel boots, we log in on the console....)

pppd call rogers

(we wait for pppd to get past the connection setup)

ping 10.0.0.1

(the following kernel panic happens)

PING 10.0.0.1 (10.0.Unable to handle kernel NULL pointer dereference
at virtual address 00000000
0.1): 56 datpgd = d0080000
a bytes
[00000000] *pgd=e10ae801, *pmd = e10ae801, *pte = 00000000, *ppte =
00000000
Internal error: Oops: 0
CPU: 0
pc : [<00000000>]    lr : [<c02ece5c>]    Tainted: PF
sp : c5085dac  ip : c03af700  fp : c031c260
r10: 00000000  r9 : c5085e3c  r8 : c10c0260
r7 : 00000054  r6 : c0386160  r5 : d00d8e00  r4 : c07c8300
r3 : 00000000  r2 : 00000000  r1 : d00d8e00  r0 : c07c8300
Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  Segment user
Control: C000317F  Table: E0080000  DAC: 00000015
Process busybox (pid: 98, stack limit = 0xc5084368)
Stack: (0xc5085dac to 0xc5086000)
5da0:                            c076c110 c07c8300 00000000 c0301b44
d00a03a0
5dc0: 00000054 c076c110 c07c8300 d00a03a0 c03012f4 fd010020 d30b62e0
0100000a
5de0: 00000040 00000000 00000003 c0230000 c10c0260 fffffff3 00000000
00000000
5e00: d00a03a0 0100000a c5085ec0 00000040 c031c5e0 c5085e48 c10c0260
00000000
5e20: 00000000 c10c0260 0100000a 00000000 00000000 00000000 00000000
c5085eb4
5e40: 648a830a c10c0260 0100000a 00000000 00000000 d00a03a0 00000040
c5085ec0
5e60: c5085e88 00000040 00000010 c5085edc 00000000 c03246d4 00000000
c10a25c0
5e80: 00000000 c02e5630 00000062 00000000 00000000 00000000 00000000
c10a25c0
5ea0: 00000000 00091b50 7ffffc64 00000040 c02e638c 7ffffc64 00000040
00000000
5ec0: c5085edc 00000010 c5085eb4 00000001 00000000 00000000 00000000
00000002
5ee0: 0100000a 00000000 00000000 00000028 c1002904 c024c8c4 d3071dc0
c5084000
5f00: 010ee01f d30754a0 c1002904 00000000 c105fa80 0003f000 d30754a0
c0247c60
5f20: 00000000 00000000 d30754a0 c5084000 d30754a0 c105fa80 00000000
0003f000
5f40: d30754a0 d30754a0 00000000 c0247cf0 d10aecfc d303ece4 c02b6e68
00000000
5f60: 0000000a 00000040 00000066 c022c704 c5084000 7ffffc9c c02e6b34
00091b50
5f80: 00000010 00000003 7ffffc64 00000040 00000000 00091b50 00000010
7ffffc64
5fa0: 00000000 c022c560 7ffffc64 c022c3c8 0000000b 7ffffc4c 00000040
00001924
5fc0: 7ffffc64 00000000 00000040 00091b64 00000001 0017f2e0 7ffffc9c
7ffffccc
5fe0: 00000000 7ffffc4c 00040114 2ac42f28 60000010 0000000b 9d980000
b5f0c035
Backtrace: frame pointer underflow
Backtrace aborted due to bad frame pointer <c031c260>
Code: bad PC value.
Kernel panic: Aiee, killing interrupt handler!
In interrupt handler - not syncing


any ideas? thanks

-Kevin




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