Bug 42665

Summary: [BISECTED] skge: no traffic . After a dhcp attempt ifdown leads to oops
Product: Drivers Reporter: Alban Browaeys (prahal)
Component: NetworkAssignee: drivers_network (drivers_network)
Status: NEW ---    
Severity: high CC: alan, stephen, szg00000
Priority: P1    
Hardware: All   
OS: Linux   
Kernel Version: 3.3-rc1 Subsystem:
Regression: Yes Bisected commit-id:
Attachments: skge crash after attempt to setup as dhcp then ifdown

Description Alban Browaeys 2012-01-27 02:52:41 UTC 
Created attachment 72210 [details]
skge crash after attempt to setup as dhcp then ifdown

commit d0249e44432aa0ffcf710b64449b8eaa3722547e
Author: stephen hemminger <shemminger@vyatta.com>
Date:   Thu Jan 19 14:37:18 2012 +0000

    skge: check for PCI dma mapping errors
    
    Driver should check for mapping errors.
    Machines with limited DMA maps may return an error when a PCI map is
    requested (not an issue on standard x86).
    
    Also use upper/lower 32 bits macros for clarity.
    
    Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
    Signed-off-by: David S. Miller <davem@davemloft.net>


leads to failure to ifup <skge interface> if this one is setup as dhcp (static "works" but no traffic) then an ifdown leads to the attached oops.

Reverting this commit fixes both issues (traffic and ifdown) at least until mainline tree commit 87f71ae2dd7471c1b4c94100be1f218e91dc64c3 .


  *-network:2
       description: Ethernet interface
       produit: 88E8001 Gigabit Ethernet Controller
       fabriquant: Marvell Technology Group Ltd.
       identifiant matériel: d
       information bus: pci@0000:01:0d.0
       nom logique: eth0
       version: 13
       numéro de série: 00:18:f3:02:33:79
       taille: 100Mbit/s
       capacité: 1Gbit/s
       bits: 32 bits
       horloge: 66MHz
       fonctionnalités: bus_master cap_list rom ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=skge driverversion=1.14 duplex=full latency=64 maxlatency=31 mingnt=23 multicast=yes port=twisted pair promiscuous=yes speed=100Mbit/s
       ressources: irq:23 mémoire:fbff8000-fbffbfff portE/S:d400(taille=256) mémoire:fbfa0000-fbfbffff



01:0d.0 Ethernet controller: Marvell Technology Group Ltd. 88E8001 Gigabit Ethernet Controller (rev 13)
	Subsystem: ASUSTeK Computer Inc. Marvell 88E8001 Gigabit Ethernet Controller (Asus)
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 64 (5750ns min, 7750ns max), Cache Line Size: 16 bytes
	Interrupt: pin A routed to IRQ 23
	Region 0: Memory at fbff8000 (32-bit, non-prefetchable) [size=16K]
	Region 1: I/O ports at d400 [size=256]
	Expansion ROM at fbfa0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: skge

01:0d.0 0200: 11ab:4320 (rev 13)
	Subsystem: 1043:811a