#2431: bus_unmap_single gets called with wrong length on some tx code paths
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 Reporter:  i...@total-knowledge.com  |             Type:  defect  
   Status:  new                       |         Priority:  critical
Component:  madwifi: driver           |          Version:  trunk   
 Keywords:                            |   Patch_attached:  1       
  Pending:  0                         |  
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 I've run into a problem with madwifi trunk,
 running on arm platform. Following sequence of
 events leads to an oops.

 Two machines are configured using commands below
 (one as sta, one as an AP)

 wlanconfig ath0 create wlandev wifi0 wlanmode $MODE
 iwconfig ath0 channel 149 essid something; ifconfig ath0 up
 brctl addbr br0
 brctl addif br0 ath0;
 brctl addif br0 eth0
 ifconfig br0 $IP

 After that some data passes around the station crashes
 while trying to unmap data after TX processing.

 Attached patch fixes the problem.

 Note: I'm running linux-2.6.35.4, on ixp465-based platform.
 eth0 is running ixp4xx-eth driver which ships with the kernel.
 I do not know if the condition is reproducible with other
 hardware/software combinations.

-- 
Ticket URL: <http://madwifi-project.org/ticket/2431>
madwifi-project.org <http://madwifi-project.org/>
Multiband Atheros Driver for Wireless Fidelity
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