[Madwifi-users] madwifi-ng panic on x86_64

[Robert C. <kal...@fr...>]

I've tried using madwifi-ng on my x86_64 system. Usually it can manage
DHCP, but when I try an HTTP request I get a panic. Here's the output:

ath_hal: 0.9.16.3 (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413,
RF5413, DFS)
wlan: 0.8.4.2 (Atheros/multi-bss)
ath_rate_sample: 1.2
ath_pci: 0.9.4.5 (Atheros/multi-bss)
ACPI: PCI Interrupt Link [APC4] enabled at IRQ 19
ACPI: PCI Interrupt 0000:02:07.0[A] -> Link [APC4] -> GSI 19 (level,
low) -> IRQ 217
wifi0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
wifi0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps
24Mbps 36Mbps 48Mbps 54Mbps
wifi0: H/W encryption support: WEP AES AES_CCM TKIP
wifi0: mac 7.8 phy 4.5 radio 5.6
wifi0: Use hw queue 1 for WME_AC_BE traffic
wifi0: Use hw queue 0 for WME_AC_BK traffic
wifi0: Use hw queue 2 for WME_AC_VI traffic
wifi0: Use hw queue 3 for WME_AC_VO traffic
wifi0: Use hw queue 8 for CAB traffic
wifi0: Use hw queue 9 for beacons
wifi0: Atheros 5212: mem=0xfeae0000, irq=217
Unable to handle kernel NULL pointer dereference at 0000000000000000 RIP:
<ffffffff884a9d17>{:ath_pci:ath_tx_start+3719}
PGD 1a00a067 PUD 1a054067 PMD 0
Oops: 0000 [1]
CPU 0
Modules linked in: wlan_wep wlan_scan_sta ath_pci ath_rate_sample wlan
ath_hal nvidia natsemi forcedeth
Pid: 5886, comm: wget Tainted: P      2.6.14-gentoo #1
RIP: 0010:[<ffffffff884a9d17>]
<ffffffff884a9d17>{:ath_pci:ath_tx_start+3719}
RSP: 0018:ffff81001a72d908  EFLAGS: 00010046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff81001f466000
RDX: 0000000000000000 RSI: ffff81001a5a1248 RDI: ffff81001a578000
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff81001a5a1248
R10: ffff81001f466000 R11: 0000000000000000 R12: ffff81001a5a1248
R13: ffff81001a5503a0 R14: ffff81001a5a8f78 R15: 0000000000000068
FS:  000000000053dae0(0063) GS:ffffffff80505800(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001a026000 CR4: 00000000000006e0
Process wget (pid: 5886, threadinfo ffff81001a72c000, task ffff81001fbb0850)
Stack: ffff81000000000c ffff810000000002 ffff810000000000 ffffffff00000000
       ffff810000000001 ffffffff00000000 0000000000000000 0000000000000000
       0000000000000000 ffffffff00000003
Call Trace:<ffffffff884af0b1>{:ath_pci:ath_hardstart+2481}
<ffffffff803548e2>{qdisc_restart+210}
       <ffffffff8034803f>{dev_queue_xmit+223}
<ffffffff88481d4e>{:wlan:ieee80211_hardstart+942}
       <ffffffff803480af>{dev_queue_xmit+335}
<ffffffff8034d25c>{neigh_resolve_output+540}
       <ffffffff8035fbd3>{ip_output+515}
<ffffffff8035f16d>{ip_queue_xmit+1181}
       <ffffffff80156b73>{__alloc_pages+259}
<ffffffff80159eeb>{cache_alloc_refill+667}
       <ffffffff8036ed73>{tcp_transmit_skb+1651}
<ffffffff80371449>{tcp_connect+761}
       <ffffffff80373418>{tcp_v4_connect+2040}
<ffffffff80156b73>{__alloc_pages+259}
       <ffffffff80380a0f>{inet_stream_connect+223}
<ffffffff802268f0>{sprintf+144}
       <ffffffff8033f4da>{sys_connect+122}
<ffffffff8033dff1>{sock_map_fd+321}
       <ffffffff8033efbc>{__sock_create+300}
<ffffffff8010e8e6>{system_call+126}


Code: 48 8b 03 48 85 c0 49 89 82 30 03 00 00 75 10 4c 89 d0 48 05
RIP <ffffffff884a9d17>{:ath_pci:ath_tx_start+3719} RSP <ffff81001a72d908>
CR2: 0000000000000000
 <0>Kernel panic - not syncing: Aiee, killing interrupt handler!


This isn't urgent for me, as I can get online just fine with
madwifi-old, but I'd like to help out with debugging this if I can.

-- Rob