[LinuxPPS] Kernel Oops on 2.26.21

[Don Weeks]

I am doing some embedded work with Cavium Octeon (MIPS) which supplies a
2.26.21 kernel. I grabbed the lastest (might be the problem) kernel patches
for Linux PPS and added them to the .21 kernel. Everything compiles fine and
the pps driver comes up:

2009-12-10,21:29:28.617,kern,info,localhost,kernel,LinuxPPS API ver. 1
registered
2009-12-10,21:29:28.617,kern,info,localhost,kernel,Software ver. 5.3.6 -
Copyright 2005-2007 Rodolfo Giometti <giometti at linux.it>


However, on loading the ktimer driver, I get the following oops:

Code: 144000b1 00000000 dfa60000 <80c30000> 1060017b 02e0802d 24020025
10620021 0212102b
CPU 9 Unable to handle kernel paging request at virtual address
0000000000000000, epc == ffffffff802e05d8, ra == ffffffff80382ef4
Oops[#2]:
Cpu 9
$ 0 : 0000000000000000 0000000000000000 0000000000000000 ffffffff80382bf8
$ 4 : a80000006c3e4558 0000000000000014 0000000000000000 a80000005ecb7c70
$ 8 : c000000000208bd0 0000000000000001 a80000041c18a6d8 0000000000000005
$12 : 0000000000000000 ffffffff802e1eec 0000000000210000 ffffffff807aa5b8
$16 : a80000006c3e4400 a800000069834a00 a80000006c3e456c 0000000000000000
$20 : a80000005ecb7c70 000000000fb00001 0000000000000026 a80000006c3e4558
$24 : 0000000000000000 0000000000000020
$28 : a80000005ecb4000 a80000005ecb7bc0 0000000000000014 ffffffff80382ef4
Hi : 000000000000007d
Lo : fffffffffdfdfe7b
epc : ffffffff802e05d8 vsnprintf+0x58/0x798 Tainted: P
ra : ffffffff80382ef4 device_create+0xc4/0x160
Status: 1000cce3 KX SX UX KERNEL EXL IE
Cause : 00000008
BadVA : 0000000000000000
PrId : 000d0409
Modules linked in: ktimer cavgpio(P) pps_core ipip xt_dscp nfsd exportfs
xt_TCPMSS xt_tcpmss xt_string xt_statistic xt_state xt_sctp xt_realm
xt_quota xt_policy xt_pkttype xt_physdev xt_NFQUEUE xt_NFLOG xt_multiport
xt_MARK xt_mark xt_mac xt_limit xt_length xt_helper xt_hashlimit xt_esp
xt_dccp xt_conntrack xt_connmark xt_connbytes xt_comment tun sch_tbf
sch_prio sch_ingress sch_htb sch_dsmark qosmPktMonitor_driver(P) nf_nat_sip
nf_conntrack_sip ipv6 ipt_ULOG ipt_TTL ipt_ttl ipt_TOS ipt_tos ipt_SAME
ipt_REJECT ipt_REDIRECT ipt_recent ipt_owner ipt_NETMAP ipt_MASQUERADE
ipt_LOG ipt_iprange ipt_ECN ipt_ecn ipt_CLUSTERIP ipt_ah ipt_addrtype
iptable_nat nf_nat nf_conntrack_ipv4 nf_conntrack nfnetlink iptable_mangle
iptable_filter ip_tables tunnel4 ip6_tables cls_u32 cls_tcindex act_police
Process modprobe (pid: 30207, threadinfo=a80000005ecb4000,
task=a80000006695c1c0)
Stack : 0000000000000000 c000000000235c00 a80000006c3e4400 a800000069834a00
fffffffffffffff4 0000000000000000 0000000000000000 000000000fb00001
0000000000000026 0000000000000026 ffffffff801981d0 ffffffff80382ef4
a80000005ecb7c70 ffffffff803893a4 a80000041c18a600 a80000041c18a6d8
0000000000000000 c000000000210000 c000000000210000 ffffffff80570000
c0000000002072f8 ffffffff80570000 c000000000208bd0 0000000000000001
a80000041c18a6d8 0000000000000005 0000000000000000 c000000000235b30
a80000041c18a600 c000000000210000 c0000000002083ec c0000000002082a4
0000000000000000 0000000100100100 c000000000235c00 c000000000236688
c000000000230000 c000000000235c00 c000000000217eb0 c00000000020f000
...
Call Trace:
[<ffffffff802e05d8>] vsnprintf+0x58/0x798
[<ffffffff80382ef4>] device_create+0xc4/0x160
[<c0000000002072f8>] pps_register_cdev+0x180/0x1e0 [pps_core]
[<c0000000002083ec>] pps_register_source+0x414/0x530 [pps_core]
[<c00000000010c078>] pps_ktimer_init+0x78/0x1a8 [ktimer]
[<ffffffff80199940>] sys_init_module+0x1c8/0x1cd8
[<ffffffff80154494>] handle_sys+0x154/0x174


Code: 144000b1 00000000 dfa60000 <80c30000> 1060017b 02e0802d 24020025
10620021 0212102b

I looked at the archive from the wiki and the 21 patches are vastly
different than the code I picked up. Any help would be appreciated.
       Don
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://ml.enneenne.com/pipermail/linuxpps/attachments/20091211/d081c7f6/attachment.htm