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 Post subject: Kernel panic - not syncing: Fatal exception in interrupt
PostPosted: Thu Mar 20, 2014 7:27 am 

Joined: Thu Mar 20, 2014 7:20 am
Posts: 2
Dear All,

I met a problem in L2TP function.
Please help.
My device is MIPS embedded system.
Kernel is 2.6.36 used pppol2tp
app is used openlt2p-1.8 and ppp-2.4.1

It is happened in kernel->pppol2tp_prepare_tunnel_socket->add_list

# /usr/lib/openl2tpd –Df –u 1701

CPU 1 Unable to handle kernel paging request at virtual address 00000004, epc == 801d7170, ra == 801d7160
=== MIPS MT State Dump ===
-- Global State --
MVPControl Passed: 00000005
MVPControl Read: 00000004
MVPConf0 : a8008405
-- per-VPE State --
VPE 0
VPEControl : 00008000
VPEConf0 : 802f0003
VPE0.Status : 11000301
VPE0.EPC : c02a097c uart_msg_to_tcconsole+0x20/0x180 [raeth]
VPE0.Cause : 50807c08
VPE0.Config7 : 80080500
VPE 1
VPEControl : 00008000
VPEConf0 : 806f0003
VPE1.Status : 11000301
VPE1.EPC : c2fb1ef4 k_mutex_lock+0x0/0x34 [ortp]
VPE1.Cause : 50803008
VPE1.Config7 : 80080500
-- per-TC State --
TC 0
TCStatus : 1810240d
TCBind : 00000000
TCRestart : 80016af8 r4k_wait_irqoff+0x2c/0x48
TCHalt : 00000000
TCContext : 00000000
TC 1 (current TC with VPE EPC above)
TCStatus : 00000400
TCBind : 00200000
TCRestart : 8001ff98 printk+0x4/0x34
TCHalt : 00000000
TCContext : 00140000
TC 2
TCStatus : 1890241f
TCBind : 00400000
TCRestart : 80016af8 r4k_wait_irqoff+0x2c/0x48
TCHalt : 00000000
TCContext : 00280000
TC 3
TCStatus : 18902439
TCBind : 00600001
TCRestart : 80016af8 r4k_wait_irqoff+0x2c/0x48
TCHalt : 00000000
TCContext : 003c0000
TC 4
TCStatus : 00000000
TCBind : 00800000
TCRestart : 7581b824 0x7581b824
TCHalt : 00000001
TCContext : a7d4ce2c
TC 5
TCStatus : 00000000
TCBind : 00a00000
TCRestart : 17770eca 0x17770eca
TCHalt : 00000001
TCContext : be589af8
Counter Interrupts taken per CPU (TC)
0: 0
1: 0
2: 0
3: 0
Self-IPI invocations:
0: 759
1: 1070
2: 3232
3: 6
IPIQ[0]: head = 0x0, tail = 0x0, depth = 0
IPIQ[1]: head = 0x0, tail = 0x0, depth = 0
IPIQ[2]: head = 0x0, tail = 0x0, depth = 0
IPIQ[3]: head = 0x0, tail = 0x0, depth = 0
0 Recoveries of "stolen" FPU
===========================
Oops[#1]:
Cpu 1
$ 0 : 00000000 1810203f 00000030 00000000
$ 4 : 00000014 8032f2c8 00000618 00004dda
$ 8 : 0000000d 00000003 00000001 293d3d3d
$12 : 06a54f8e 00000000 7fe68a14 ffffffff
$16 : 87db0d80 86eaf9a8 80330000 87db0d88
$20 : 85cf3e90 85ddde00 86eaf900 8779cee0
$24 : 00000001 2af98dc0
$28 : 85cf0000 85cf3e28 80380000 801d7160
Hi : 00000007
Lo : 00000000
epc : 801d7170 pppol2tp_connect+0x858/0x9b0
Tainted: P
ra : 801d7160 pppol2tp_connect+0x848/0x9b0
Status: 11000303 KERNEL EXL IE
Cause : 4080580c
BadVA : 00000004
PrId : 00019555 ((null))
Modules linked in: usblp pcmDump(P) ovdsp(P) foip(P) acodec_x(P) ortp ksocket(P) fxs3_silicon(P) slic3_silicon(P) lec(P) pcm_silicon(P) sys_mod fuse usbled_main usbserial usb_storage ohci_hcd ehci_hcd usbcore vfat fat nls_utf8 nls_cp437 nls_base sd_mod scsi_wait_scan scsi_mod hw_nat(P) igmpsnoop ebt_ip6 ebt_ip ebtable_filter ebtables sch_prio sch_htb cls_fw act_mirred rt5390ap(P) tcvlantag tc3162l2sar(P) raeth(P) brg_shortcut(P) tcportbind tcsmux module_sel(P) wlanlanisolate tccicmd(P) tcledctrl(P) ipt_REDIRECT usbledctl
Process openl2tpd (pid: 5793, threadinfo=85cf0000, task=87f88d80, tls=00000000)
Stack : 81116d54 8032f2c8 00000615 00000020 00000000 803a6ba0 ffffff7a 800b3978
87711b80 800cb634 877b62c0 7fe686d0 85cf3e90 00000026 7fe686d0 0000005b
0042f78c 00000001 00450000 801df414 803a0000 800c6804 80426174 00000000
00000000 00000000 00180000 00010000 00000000 000e0002 06a54f8e 4a040000
00000000 000071f4 00008644 0000e330 00000000 00000000 86012a00 00000001
...
Call Trace:
[<801d7170>] pppol2tp_connect+0x858/0x9b0
[<801df414>] sys_connect+0x74/0xcc
[<80004450>] stack_done+0x20/0x40


Code: 2645f2c8 24060618 aec300a8 <ac710004> 27c4b230 ae110000 0c003019 aed000ac 0c003cd2
Kernel panic - not syncing: Fatal exception in interrupt
Machine restart ...


If I mark add_list, system does not crash.


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 Post subject: Re: Kernel panic - not syncing: Fatal exception in interrupt
PostPosted: Fri Mar 21, 2014 4:15 am 

Joined: Thu Mar 20, 2014 7:20 am
Posts: 2
Dear All,

I have fixed it , thanks.

Best Regards


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