Re: [Madwifi-devel] server crash with 0.9.2 & 0.9.3

[Stephen S. <ss...@di...>]

I'm not exactly sure on how to get these traces.  Is there docs on this?

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Thanks,

Stephen

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From: mad...@li...
[mailto:mad...@li...] On Behalf Of
Michael Taylor
Sent: Friday, March 30, 2007 12:05 PM
To: mad...@li...
Subject: Re: [Madwifi-devel] server crash with 0.9.2 & 0.9.3

=20

Please post the trace.  BTW, I *have* been able to cause a panic during
association with at least one client.  A Broadcom radio on a Laptop with
Windows XP could panic the AP if the WEP mode and key were incorrect.  I
could generate the panic (see below) every time, but it went away when
the authentication dialog had WEP specified and a proper key.  I haven't
had time yet to investigate the cause enough to file a meaningful bug
report.  Let me know if you see something similar in your logs and maybe
you can help isolate it.





Unable to handle kernel NULL pointer dereference at virtual address
000000d4
pgd =3D c0004000
[000000d4] *pgd=3D00000000
Internal error: Oops: 17 [#1]
Modules linked in: wlan_acl wlan_wep wlan_scan_ap ixp400_eth m41txx
hw_random_ix
p465 ixp400 ath_rate_sample ath_pci wlan ath_hal ip6t_multiport
ip6t_physdev
ip6
t_state ip6_conntrack ip6t_mac ip6t_LOG ip6t_REJECT ip6table_filter
ip6table_man
gle ip6_tables ipv6 ipt_multiport ipt_REJECT ipt_REDIRECT ipt_MASQUERADE
ipt_mac
ipt_physdev ipt_limit ipt_iprange ipt_LOG iptable_mangle iptable_nat
ip_conntra
ck iptable_filter ip_tables ebt_redirect ebt_mark_m ebt_pkttype ebt_snat
ebt_dna
t ebt_log ebt_vlan ebtable_broute ebtable_filter ebtable_nat ebtables
bridge
net
link_dev 8021q
CPU: 0
PC is at ieee80211_remove_wds_addr+0x2c/0x120 [wlan]
LR is at ieee80211_node_leave+0x70/0x4ac [wlan]
pc : [<bf1167e4>]    lr : [<bf117b34>]    Tainted: PF
sp : c0225be0  ip : c0225c10  fp : c0225c0c
r10: c78d316d  r9 : c78fe046  r8 : c7ede220
r7 : 60000013  r6 : c72c0220  r5 : 00000000  r4 : c78d316d
r3 : 00000011  r2 : 60000093  r1 : c78d316d  r0 : 00000044
Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  Segment kernel
Control: 39FF  Table: 04358000  DAC: 00000017
Process swapper (pid: 0, stack limit =3D 0xc02241a0)
Stack: (0xc0225be0 to 0xc0226000)
5be0: c7ede220 00000000 000000b0 c7f496c8 c78d3000 00000000 c72c0220
00000001
5c00: c0225c54 c0225c10 bf117b34 bf1167c4 c78fe046 c78d3000 c0225c54
c0225c28
5c20: bf10f52c bf115774 00000000 c72c0220 c78d3000 c78fe038 00000001
0000000d
5c40: c78fe046 c78d3000 c0225d64 c0225c58 bf111ca0 bf117ad0 c0225cb4
c0225c68
5c60: bf17bf04 bf17b390 c4744360 c7ede024 00000000 c7ede000 00000000
00000040
5c80: c0194bc8 00000000 00000000 c78d3000 00000000 00000001 00000001
00000080
5ca0: 00000000 c018742c 00000001 00000080 00000000 bf17bc7c c0225d3c
c3818980
5cc0: 00000001 00000050 c78fe020 c7ede220 0000002a 000000b0 00000001
c0195088
5ce0: c0225d24 0000000e 00000040 00000008 0000001c 00000009 00000000
000000fa
5d00: c0187638 00000001 00000000 00000000 00000007 c78802e0 00000000
000000c2
5d20: c7184aa0 00000000 c0225d44 c0225d38 c0065ac0 c0066330 00000000
000000b0
5d40: 0000002a c78fe030 00000000 c78d3000 c78d3000 c72c0220 c0225da4
c0225d68
5d60: bf144f78 bf10fde0 00006fa1 bf17cfe0 c7ede220 00006fa1 c005aa50
c78d3000
5d80: c72c0220 c78fe030 00000000 c78d3000 c7860080 c78fe020 c0225e44
c0225da8
5da0: bf1152c8 bf144f38 00006fa1 00000012 c02809b8 00040000 c0225df4
c0225dc8
5dc0: c005afc0 c00592bc c3fa6800 00000001 000000b0 00000000 00040000
c72c0000
5de0: c7ede220 00006fa1 0000002a c0225df8 c005940c c005ae94 c413f0a0
c4139800
5e00: 0000004c 0000004d c4746d20 c4156c48 00057000 00000c20 00000002
c78d3000
5e20: 00000000 c72c0220 00006fa1 0000002a c7860080 ffffffff c0225e7c
c0225e48
5e40: bf115614 bf113c88 c0225e7c c0225e58 bf1176b4 bf116c6c 00000000
00000000
5e60: c0286dc4 c0286df0 0000000a c7ede220 c0225edc c0225e80 bf14c33c
bf115598
5e80: bf1481d0 bf0e6778 00000001 11ff6fb0 c0225eac 0000002a ffc00090
c4268000
5ea0: c7953890 c7ede000 00000001 11ff6fb0 c4268000 c7edf604 00000000
c0286dc4
5ec0: c0286df0 0000000a ffffffff c0286da0 c0225efc c0225ee0 c0075b9c
bf14ba80
5ee0: ffffffff c0224000 00000100 00000001 c0225f24 c0225f00 c0075670
c0075b18
5f00: c0224000 00000000 10000000 c005b838 c0225f70 c0280580 c0225f3c
c0225f28
5f20: c007574c c0075628 0000001c c0280c10 c0225f6c c0225f40 c005afbc
c0075720
5f40: 00040000 c005b880 c0225fa4 0000001f 10000000 c005b838 60000013
00026118
5f60: c0225fcc c0225f70 c005940c c005ae94 c414b540 c42b6b00 00000000
00000000
5f80: c005b834 c0224000 c02899fc c029bf7c 000261a8 69054202 00026118
c0225fcc
5fa0: c0225fb8 c0225fb8 c005b8cc c005b838 60000013 ffffffff 00000000
c02800bc
5fc0: c0225ffc c0225fd0 c0008954 c005b894 c0008488 00000000 00000000
c0281518
5fe0: 00000000 000039fd c0281500 c0227010 00000000 c0226000 0000809c
c00087f0
Backtrace:
[<bf1167b8>] (ieee80211_remove_wds_addr+0x0/0x120 [wlan]) from
[<bf117b34>]
(iee
e80211_node_leave+0x70/0x4ac [wlan])
r7 =3D 00000001  r6 =3D C72C0220  r5 =3D 00000000  r4 =3D C78D3000
[<bf117ac4>] (ieee80211_node_leave+0x0/0x4ac [wlan]) from [<bf111ca0>]
(ieee8021
1_recv_mgmt+0x1ecc/0x3ea8 [wlan])
[<bf10fdd4>] (ieee80211_recv_mgmt+0x0/0x3ea8 [wlan]) from [<bf144f78>]
(ath_recv
_mgmt+0x4c/0x264 [ath_pci])
[<bf144f2c>] (ath_recv_mgmt+0x0/0x264 [ath_pci]) from [<bf1152c8>]
(ieee80211_in
put+0x164c/0x1910 [wlan])
[<bf113c7c>] (ieee80211_input+0x0/0x1910 [wlan]) from [<bf115614>]
(ieee80211_in
put_all+0x88/0x174 [wlan])
[<bf11558c>] (ieee80211_input_all+0x0/0x174 [wlan]) from [<bf14c33c>]
(ath_rx_ta
sklet+0x8c8/0xa40 [ath_pci])
[<bf14ba74>] (ath_rx_tasklet+0x0/0xa40 [ath_pci]) from [<c0075b9c>]
(tasklet_act
ion+0x90/0xe4)
[<c0075b0c>] (tasklet_action+0x0/0xe4) from [<c0075670>]
(___do_softirq+0x54/0xf
8)
r6 =3D 00000001  r5 =3D 00000100  r4 =3D C0224000
[<c007561c>] (___do_softirq+0x0/0xf8) from [<c007574c>]
(__do_softirq+0x38/0x58)
[<c0075714>] (__do_softirq+0x0/0x58) from [<c005afbc>]
(asm_do_IRQ+0x134/0x158)
r5 =3D C0280C10  r4 =3D 0000001C
[<c005ae88>] (asm_do_IRQ+0x0/0x158) from [<c005940c>]
(__irq_svc+0x2c/0xa0)
[<c005b888>] (cpu_idle+0x0/0x60) from [<c0008954>]
(start_kernel+0x170/0x1b4)
r5 =3D C02800BC  r4 =3D 00000000
[<c00087e4>] (start_kernel+0x0/0x1b4) from [<0000809c>] (0x809c)
Code: e10f7000 e3872080 e121f002 e0800103 (e5905090)
=20
<0>Kernel panic - not syncing: Aiee, killing interrupt handler!



Stephen Shaw wrote:=20

I unfortunately don't have any proof, but here are the details.  Maybe
there is something that I'm not aware of.

=20

We have several servers in the wild and all of them have a netgear
WG311T in them as an AP.(netgear 108 mbps pci card)  The servers that
are not using wireless, but have it enables never crash.  They seem to
never give us problems.  However, those that are using the wireless tend
to crash randomly(requiring a hard reboot).  To complicate things even
more, not all of the server that use wireless crash.  Maybe it is just
the wireless adapters connecting to our server?

Server details:

Centos

Kernel 2.6.9-42.smp

Madwifi 0.9.3

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Thanks,

Stephen

=20

Sorry for the real lack of information.

=20

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