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Ticket #1463 (new defect)

Opened 15 years ago

Last modified 15 years ago

SR4 driver panic on

Reported by: Assigned to:
Priority: major Milestone:
Component: madwifi: driver Version: v0.9.3.1
Keywords: kernel panic Cc:
Patch is attached: 0 Pending:



2 SR4 miniPCI cards

distance between antennas ~24 inches

adhoc mode

processor MPC 5200

kernel Bluecat

gcc version 3.4.3

Asymmetric traffic pattern (1 primary traffic generator 1.5Mbit)

After about 15 minutes I get the kernel panic below.

Dmesg output of driver loading:

ath_hal: module license 'Proprietary' taints kernel.
ath_hal: (AR5210, AR5211, AR5212, RF5111, RF5112, RF2413, RF5413, REGOPS_FUNC)
wlan: (
ath_rate_sample: 1.2 (
ath_pci: (
PCI: Enabling device 0000:00:18.0 (0000 -> 0002)
ath_pci: switching rfkill capability off
wifi0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
wifi0: H/W encryption support: WEP AES AES_CCM TKIP
wifi0: mac 10.5 phy 6.1 radio 6.3
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=0xa0000000, irq=1

Sysctl options being changed.

dev.wifi0.diversity = 0
net.ipv4.ip_forward = 1
dev.wifi0.txantenna = 1
dev.wifi0.rxantenna = 1

Kernel Panic:

skb_over_panic: text:d90a9cf0 len:1642 put:124 head:c095c000 data:c095c010 tail:c095c67a e
nd:c095c600 dev:eth0
kernel BUG in skb_over_panic at net/core/skbuff.c:93!
Oops: Exception in kernel mode, sig: 5 [#1]
NIP: C018D55C LR: C018D55C SP: C028BDF0 REGS: c028bd40 TRAP: 0700    Tainted: P
MSR: 00029032 EE: 1 PR: 0 FP: 0 ME: 1 IR/DR: 11
TASK = c024db30[0] 'swapper' THREAD: c028a000
Last syscall: 120
GPR00: C018D55C C028BDF0 C024DB30 00000075 000015CE FFFFFFFF C02A0000 C025068C
GPR08: C0250000 C0280000 00000000 C028A000 00000000 FFFFFFFB 0FFB9000 17F7A000
GPR16: 00000000 00000000 00000000 CF254000 CF258000 00000000 00000001 00000000
GPR24: 00000000 C02B0000 0000007C CF540AE0 CF0355D0 CF02C5D0 CF254220 00000000
NIP [c018d55c] skb_over_panic+0x50/0x64
LR [c018d55c] skb_over_panic+0x50/0x64
Call trace:
 [d90a9d04] ath_rx_tasklet+0x65c/0x858 [ath_pci]
 [c001ccc4] tasklet_action+0x78/0xe4
 [c001c820] __do_softirq+0x80/0xf4
 [c001c8ec] do_softirq+0x58/0x60
 [c001c9d0] irq_exit+0x5c/0x7c
 [c00062ec] do_IRQ+0x84/0x98
 [c0004abc] ret_from_except+0x0/0x14
 [c0003568] ppc6xx_idle+0xe4/0xf0
 [c0006384] cpu_idle+0x28/0x44
 [c000389c] rest_init+0x3c/0x4c
 [c028c610] start_kernel+0x158/0x184
 [000032c4] 0x32c4

Change History

07/26/07 01:39:33 changed by mentor

  • priority changed from critical to major.

08/04/07 04:00:18 changed by mentor

There has recently been a fix for a skb_over_panic in #1477. Would you verify if you are still experiencing the porblem?