Hey,
I'm working on getting OpenWrt support for the Linksys wrt350nv2, it's a
marvell orion based arm9 platform with an atheros wireless n card.
The target is running a 2.6.27 kernel with compat-wireless-2008-11-03
drivers with ath9k enabled. Hostapd 0.6.5 is used for AP mode setup
lspci shows: 01:07.0 Network controller: Atheros Communications, Inc.
AR5416 802.11a/b/g/n Wireless PCI Adapter (rev 01)
The router runs fine for about a minute or five, but then it fails; here
are two of the panics I got.
I've already asked the one responsible for wifi @ openwrt but he
suggested to post my results here
-------------------------------------------------------
Unable to handle kernel NULL pointer dereference at virtual address 00000000
pgd = c0004000
[00000000] *pgd=00000000
Internal error: Oops: 817 [#1]
Modules linked in: ehci_hcd nf_nat_tftp nf_conntrack_tftp nf_nat_irc
nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat
nf_nat xt_state nf_conntrack_ipv4 nf_conntrack ipt_REJECT xt_TCPMSS
ipt_LOG xt_multiport xt_mac xt_limit iptable_mangle iptable_filter
ip_tables xt_tcpudp x_tables ath9k usbcore mac80211 cfg80211 arc4
aes_generic deflate ecb cbc crypto_blkcipher crypto_hash cryptomgr
crypto_algapi
CPU: 0 Not tainted (2.6.27 #16)
PC is at skb_gso_segment+0x24/0x1c4
LR is at dev_hard_start_xmit+0x18c/0x274
pc : [<c0139128>] lr : [<c0139454>] psr: a0000013
sp : c0215cb4 ip : c0215cd4 fp : c0215cd0
r10: c02332e4 r9 : 00000000 r8 : c1d84620
r7 : 00000803 r6 : 00000008 r5 : c04e5840 r4 : 00000000
r3 : 00000000 r2 : c1890000 r1 : 00000803 r0 : c04e5840
Flags: NzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: a005317f Table: 00cfc000 DAC: 00000017
Process swapper (pid: 0, stack limit = 0xc0214260)
Stack: (0xc0215cb4 to 0xc0216000)
5ca0: 00000000 c04e5840
c023334c
5cc0: c1d50400 c0215cfc c0215cd4 c0139454 c0139114 c015ca00 c04e5840
c0220380
5ce0: c04e5840 c1d84620 c1d50400 c0cac0f0 c0215d1c c0215d00 c013c200
c01392d8
5d00: c04e5840 c0cac0e0 0000000e 00000000 c0215d40 c0215d20 c015cc08
c013be78
5d20: c04e5840 c0233794 c0f530c0 c04e5860 c04e5840 c0215d64 c0215d44
c015cf98
5d40: c015ca10 c1d50400 c015ca00 80000000 c04e5840 c1896048 c0215d78
c0215d68
5d60: c0159d28 c015cf00 c04e5840 c0215da4 c0215d7c c0159fa0 c0159cf4
c1d50400
5d80: c0159ce4 80000000 c1896048 c04e5840 c0233020 c1d19000 c0215de0
c0215da8
5da0: c0158910 c0159d40 c1d19000 c01585bc 80000000 c0233774 c02332cc
c04e5840
5dc0: c02332cc c04e5840 c0233020 c1d19000 00000008 c0215e0c c0215de4
c0158de8
5de0: c01585cc 00000000 c01585bc 80000000 c02332cc c04e5840 c0221cf4
c1d19000
5e00: c0215e40 c0215e10 c0139044 c0158b98 c0215ea0 c1c88d60 c04e5840
00000000
5e20: c1ddb4e0 00000000 c1d19380 00000000 000018eb c0215e70 c0215e44
c0193f08
5e40: c0138c08 c13e97c0 00000000 00000000 00000000 c04e5840 c189603a
c1eb7c20
5e60: 00000001 c0215e9c c0215e74 c0194158 c0193dd4 c0215e80 c0052574
c002744c
5e80: c1eb7c20 c04e5840 00000000 c1edc000 c0215ed0 c0215ea0 c0138f70
c0193f64
5ea0: c0215f64 c0217b58 c02332b0 00000001 000018eb 00000040 0001aabc
41069260
5ec0: 000018eb c0215ef0 c0215ed4 c013b5a4 c0138c08 c02332b0 00000040
00000009
5ee0: 0000012c c0215f18 c0215ef4 c013afb4 c013b528 00000001 c0229520
00000009
5f00: c0217b58 0001aabc 0001a9ec c0215f34 c0215f1c c0031abc c013af50
00000006
5f20: c021b460 00000000 c0215f44 c0215f38 c0031dec c0031a70 c0215f60
c0215f48
5f40: c001e048 c0031db8 ffffffff fdd20200 00000040 c0215fc0 c0215f64
c001e7e8
5f60: c001e010 00000000 c1ee2be0 c0214000 00000000 c001fc44 c0214000
c001cee0
5f80: c0217b58 0001aabc 41069260 0001a9ec c0215fc0 c0215fac c0215fac
c001fb1c
5fa0: c001fc48 60000013 ffffffff c022bf14 c0223f30 c0215fd0 c0215fc4
c019ddac
5fc0: c001faf4 c0215ff4 c0215fd4 c0008a34 c019dd68 c0008398 c001cee0
a0053175
5fe0: c02243ec c001d2e4 00000000 c0215ff8 00008034 c00087b8 00000000
00000000
Backtrace:
[<c0139104>] (skb_gso_segment+0x0/0x1c4) from [<c0139454>]
(dev_hard_start_xmit+0x18c/0x274)
r7:c1d50400 r6:c023334c r5:c04e5840 r4:00000000
[<c01392c8>] (dev_hard_start_xmit+0x0/0x274) from [<c013c200>]
(dev_queue_xmit+0x398/0x470)
r8:c0cac0f0 r7:c1d50400 r6:c1d84620 r5:c04e5840 r4:c0220380
[<c013be68>] (dev_queue_xmit+0x0/0x470) from [<c015cc08>]
(ip_finish_output+0x208/0x25c)
r7:00000000 r6:0000000e r5:c0cac0e0 r4:c04e5840
[<c015ca00>] (ip_finish_output+0x0/0x25c) from [<c015cf98>]
(ip_output+0xa8/0xbc)
r8:c04e5840 r7:c04e5860 r6:c0f530c0 r5:c0233794 r4:c04e5840
[<c015cef0>] (ip_output+0x0/0xbc) from [<c0159d28>]
(ip_forward_finish+0x44/0x4c)
r5:c1896048 r4:c04e5840
[<c0159ce4>] (ip_forward_finish+0x0/0x4c) from [<c0159fa0>]
(ip_forward+0x270/0x2f0)
r4:c04e5840
[<c0159d30>] (ip_forward+0x0/0x2f0) from [<c0158910>]
(ip_rcv_finish+0x354/0x378)
r7:c1d19000 r6:c0233020 r5:c04e5840 r4:c1896048
[<c01585bc>] (ip_rcv_finish+0x0/0x378) from [<c0158de8>]
(ip_rcv+0x260/0x298)
r8:00000008 r7:c1d19000 r6:c0233020 r5:c04e5840 r4:c02332cc
[<c0158b88>] (ip_rcv+0x0/0x298) from [<c0139044>]
(netif_receive_skb+0x44c/0x498)
r7:c1d19000 r6:c0221cf4 r5:c04e5840 r4:c02332cc
[<c0138bf8>] (netif_receive_skb+0x0/0x498) from [<c0193f08>]
(br_handle_frame_finish+0x144/0x190)
[<c0193dc4>] (br_handle_frame_finish+0x0/0x190) from [<c0194158>]
(br_handle_frame+0x204/0x23c)
r8:00000001 r7:c1eb7c20 r6:c189603a r5:c04e5840 r4:00000000
[<c0193f54>] (br_handle_frame+0x0/0x23c) from [<c0138f70>]
(netif_receive_skb+0x378/0x498)
r7:c1edc000 r6:00000000 r5:c04e5840 r4:c1eb7c20
[<c0138bf8>] (netif_receive_skb+0x0/0x498) from [<c013b5a4>]
(process_backlog+0x8c/0x120)
[<c013b518>] (process_backlog+0x0/0x120) from [<c013afb4>]
(net_rx_action+0x74/0x1ac)
r7:0000012c r6:00000009 r5:00000040 r4:c02332b0
[<c013af40>] (net_rx_action+0x0/0x1ac) from [<c0031abc>]
(__do_softirq+0x5c/0xd0)
[<c0031a60>] (__do_softirq+0x0/0xd0) from [<c0031dec>] (irq_exit+0x44/0x4c)
r6:00000000 r5:c021b460 r4:00000006
[<c0031da8>] (irq_exit+0x0/0x4c) from [<c001e048>]
(__exception_text_start+0x48/0x60)
[<c001e000>] (__exception_text_start+0x0/0x60) from [<c001e7e8>]
(__irq_svc+0x28/0x60)
Exception stack(0xc0215f64 to 0xc0215fac)
5f60: 00000000 c1ee2be0 c0214000 00000000 c001fc44 c0214000
c001cee0
5f80: c0217b58 0001aabc 41069260 0001a9ec c0215fc0 c0215fac c0215fac
c001fb1c
5fa0: c001fc48 60000013 ffffffff
r6:00000040 r5:fdd20200 r4:ffffffff
[<c001fae4>] (cpu_idle+0x0/0x54) from [<c019ddac>] (rest_init+0x54/0x68)
r5:c0223f30 r4:c022bf14
[<c019dd58>] (rest_init+0x0/0x68) from [<c0008a34>]
(start_kernel+0x28c/0x2fc)
[<c00087a8>] (start_kernel+0x0/0x2fc) from [<00008034>] (0x8034)
r6:c001d2e4 r5:c02243ec r4:a0053175
Code: e5933010 e1a07001 e3530000 13a03000 (15833000)
Kernel panic - not syncing: Fatal exception in interrupt
Rebooting in 3 seconds..
-----------------------------------------------------
and another one:
Unable to handle kernel paging request at virtual address 00120122
pgd = c1f20000
[00120122] *pgd=00ca8031, *pte=00000000, *ppte=00000000
Internal error: Oops: 1 [#1]
Modules linked in: ehci_hcd nf_nat_tftp nf_conntrack_tftp nf_nat_irc
nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat
nf_nat xt_state nf_conntrack_ipv4 nf_conntrack ipt_REJECT xt_TCPMSS
ipt_LOG xt_multiport xt_mac xt_limit iptable_mangle iptable_filter
ip_tables xt_tcpudp x_tables ath9k usbcore mac80211 cfg80211 arc4
aes_generic deflate ecb cbc crypto_blkcipher crypto_hash cryptomgr
crypto_algapi
CPU: 0 Not tainted (2.6.27 #16)
PC is at skb_copy_bits+0x184/0x214
LR is at __pskb_pull_tail+0x8c/0x2ac
pc : [<c01324bc>] lr : [<c0133444>] psr: 60000013
sp : c0215ca0 ip : 00000036 fp : c0215cd0
r10: c18aa070 r9 : c13693c0 r8 : 00000036
r7 : 001200d2 r6 : 00000036 r5 : 00000000 r4 : 00000000
r3 : 00000036 r2 : c18aaf60 r1 : 000004f8 r0 : c01fe7ac
Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment kernel
Control: a005317f Table: 01f20000 DAC: 00000017
Process swapper (pid: 0, stack limit = 0xc0214260)
Stack: (0xc0215ca0 to 0xc0216000)
5ca0: 00000000 c13693c0 c13693c0 c13693c0 c13693c0 c1d22400 c0c69670
00000000
5cc0: c02332e4 c0215cfc c0215cd4 c0133444 c0132348 c13693c0 c13693c0
0000000e
5ce0: c1d22400 c0c69670 00000000 c02332e4 c0215d1c c0215d00 c013bed0
c01333c8
5d00: c13693c0 c0c69660 0000000e 00000000 c0215d40 c0215d20 c015cc08
c013be78
5d20: c13693c0 c0233794 c1e30960 c13693e0 c13693c0 c0215d64 c0215d44
c015cf98
5d40: c015ca10 c1d22400 c015ca00 80000000 c13693c0 c18aa048 c0215d78
c0215d68
5d60: c0159d28 c015cf00 c13693c0 c0215da4 c0215d7c c0159fa0 c0159cf4
c1d22400
5d80: c0159ce4 80000000 c18aa048 c13693c0 c0233020 c1d19000 c0215de0
c0215da8
5da0: c0158910 c0159d40 c1d19000 c01585bc 80000000 c0233774 c02332cc
c13693c0
5dc0: c02332cc c13693c0 c0233020 c1d19000 00000008 c0215e0c c0215de4
c0158de8
5de0: c01585cc 00000000 c01585bc 80000000 c02332cc c13693c0 c0221cf4
c1d19000
5e00: c0215e40 c0215e10 c0139044 c0158b98 c0215ea0 c1c88d60 c13693c0
00000000
5e20: c1ef44e0 00000000 c1d19380 00000000 ffffce20 c0215e70 c0215e44
c0193f08
5e40: c0138c08 00000f20 00000000 ffc24270 00000000 c13693c0 c18aa03a
c0c2e1a0
5e60: 00000001 c0215e9c c0215e74 c0194158 c0193dd4 c1ff1860 c1c88eb4
c1ff17e8
5e80: c0c2e1a0 c13693c0 00000000 c1f42800 c0215ed0 c0215ea0 c0138f70
c0193f64
5ea0: 0000000a c1fa0000 c02332b0 00000001 ffffce20 00000040 0001aabc
41069260
5ec0: ffffce20 c0215ef0 c0215ed4 c013b5a4 c0138c08 c02332b0 00000040
00000009
5ee0: 0000012c c0215f18 c0215ef4 c013afb4 c013b528 00000001 c0229520
00000009
5f00: c0217b58 0001aabc 0001a9ec c0215f34 c0215f1c c0031abc c013af50
00000006
5f20: c021b460 00000000 c0215f44 c0215f38 c0031dec c0031a70 c0215f60
c0215f48
5f40: c001e048 c0031db8 ffffffff fdd20200 00000040 c0215fc0 c0215f64
c001e7e8
5f60: c001e010 00000000 c1d4ec00 c0214000 60000013 c001fc44 c0214000
c001cee0
5f80: c0217b58 0001aabc 41069260 0001a9ec c0215fc0 c0215fac c0215fac
c001fc88
5fa0: c001fb1c 60000013 ffffffff c022bf14 c0223f30 c0215fd0 c0215fc4
c019ddac
5fc0: c001faf4 c0215ff4 c0215fd4 c0008a34 c019dd68 c0008398 c001cee0
a0053175
5fe0: c02243ec c001d2e4 00000000 c0215ff8 00008034 c00087b8 00000000
00000000
Backtrace:
[<c0132338>] (skb_copy_bits+0x0/0x214) from [<c0133444>]
(__pskb_pull_tail+0x8c/0x2ac)
[<c01333b8>] (__pskb_pull_tail+0x0/0x2ac) from [<c013bed0>]
(dev_queue_xmit+0x68/0x470)
[<c013be68>] (dev_queue_xmit+0x0/0x470) from [<c015cc08>]
(ip_finish_output+0x208/0x25c)
r7:00000000 r6:0000000e r5:c0c69660 r4:c13693c0
[<c015ca00>] (ip_finish_output+0x0/0x25c) from [<c015cf98>]
(ip_output+0xa8/0xbc)
r8:c13693c0 r7:c13693e0 r6:c1e30960 r5:c0233794 r4:c13693c0
[<c015cef0>] (ip_output+0x0/0xbc) from [<c0159d28>]
(ip_forward_finish+0x44/0x4c)
r5:c18aa048 r4:c13693c0
[<c0159ce4>] (ip_forward_finish+0x0/0x4c) from [<c0159fa0>]
(ip_forward+0x270/0x2f0)
r4:c13693c0
[<c0159d30>] (ip_forward+0x0/0x2f0) from [<c0158910>]
(ip_rcv_finish+0x354/0x378)
r7:c1d19000 r6:c0233020 r5:c13693c0 r4:c18aa048
[<c01585bc>] (ip_rcv_finish+0x0/0x378) from [<c0158de8>]
(ip_rcv+0x260/0x298)
r8:00000008 r7:c1d19000 r6:c0233020 r5:c13693c0 r4:c02332cc
[<c0158b88>] (ip_rcv+0x0/0x298) from [<c0139044>]
(netif_receive_skb+0x44c/0x498)
r7:c1d19000 r6:c0221cf4 r5:c13693c0 r4:c02332cc
[<c0138bf8>] (netif_receive_skb+0x0/0x498) from [<c0193f08>]
(br_handle_frame_finish+0x144/0x190)
[<c0193dc4>] (br_handle_frame_finish+0x0/0x190) from [<c0194158>]
(br_handle_frame+0x204/0x23c)
r8:00000001 r7:c0c2e1a0 r6:c18aa03a r5:c13693c0 r4:00000000
[<c0193f54>] (br_handle_frame+0x0/0x23c) from [<c0138f70>]
(netif_receive_skb+0x378/0x498)
r7:c1f42800 r6:00000000 r5:c13693c0 r4:c0c2e1a0
[<c0138bf8>] (netif_receive_skb+0x0/0x498) from [<c013b5a4>]
(process_backlog+0x8c/0x120)
[<c013b518>] (process_backlog+0x0/0x120) from [<c013afb4>]
(net_rx_action+0x74/0x1ac)
r7:0000012c r6:00000009 r5:00000040 r4:c02332b0
[<c013af40>] (net_rx_action+0x0/0x1ac) from [<c0031abc>]
(__do_softirq+0x5c/0xd0)
[<c0031a60>] (__do_softirq+0x0/0xd0) from [<c0031dec>] (irq_exit+0x44/0x4c)
r6:00000000 r5:c021b460 r4:00000006
[<c0031da8>] (irq_exit+0x0/0x4c) from [<c001e048>]
(__exception_text_start+0x48/0x60)
[<c001e000>] (__exception_text_start+0x0/0x60) from [<c001e7e8>]
(__irq_svc+0x28/0x60)
Exception stack(0xc0215f64 to 0xc0215fac)
5f60: 00000000 c1d4ec00 c0214000 60000013 c001fc44 c0214000
c001cee0
5f80: c0217b58 0001aabc 41069260 0001a9ec c0215fc0 c0215fac c0215fac
c001fc88
5fa0: c001fb1c 60000013 ffffffff
r6:00000040 r5:fdd20200 r4:ffffffff
[<c001fae4>] (cpu_idle+0x0/0x54) from [<c019ddac>] (rest_init+0x54/0x68)
r5:c0223f30 r4:c022bf14
[<c019dd58>] (rest_init+0x0/0x68) from [<c0008a34>]
(start_kernel+0x28c/0x2fc)
[<c00087a8>] (start_kernel+0x0/0x2fc) from [<00008034>] (0x8034)
r6:c001d2e4 r5:c02243ec r4:a0053175
Code: e59f008c e59f1090 da000000 ebfbeaa1 (e5973050)
Kernel panic - not syncing: Fatal exception in interrupt
Rebooting in 3 seconds..
--
Dirk Teurlings BICT
Upexia
w: http://www.upexia.nl
e: info@xxxxxxxxx
t: +31 (0) 85 210 2015
a: De Stoutheuvel 109
p: 5632 MX Eindhoven
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