Hello,All! Here is a bug report regarding DMA issues with openfwwf ver. 5.2 . I suspect, that this is a known issue, but anyway, maybe this bugzilla ticket will add something important.
---------- Forwarded message ---------- From: <bugzi...@redhat.com> Date: 2009/8/5 Subject: [Bug 515668] New: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware To: lemen...@gmail.com Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. Summary: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware https://bugzilla.redhat.com/show_bug.cgi?id=515668 Summary: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware Product: Fedora Version: 11 Platform: i686 OS/Version: Linux Status: NEW Severity: urgent Priority: low Component: b43-openfwwf AssignedTo: lemen...@gmail.com ReportedBy: arethus...@gmail.com QAContact: extras...@fedoraproject.org CC: lemen...@gmail.com Estimated Hours: 0.0 Classification: Fedora User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.1) Gecko/20090717 Fedora/3.5.1-3.fc11 Firefox/3.5.1 I am using a Linksys PCMCIA wireless card, which is model WPC54GS at version 2, on a Fedora 11 system installed on a Thinkpad T42. When I am using the b43 kernel module in conjunction with the b43-openfwwf firmware, I frequently observe the system panic when there is heavy amounts of network activity on the wireless card interface. Empirically, this issue only seems to happen when the card is associated with the residential wireless network broadcast by the Actiontec MI424WR wireless router, and it does not occur when using the Broadcom firmware extracted according to the instructions from http://www.linuxwireless.org/en/users/Drivers/b43#device_firmware. I can most consistently cause a crash by using the speed testing service at http://www.speedtest.net/ to stress test the wireless interface. Reproducible: Always Steps to Reproduce: 1. Install b43-openfwwf to get the wireless card operational. 2. Visit http://www.speedtest.net/ for an easy way to stress test the card. 3. Start a speed test. The kernel should panic shortly after the test is begun. Actual Results: The system halts with a kernel panic. Expected Results: The system should not crash. I captured the resulting kernel panic using netconsole, since the system did not switch to a text console when the panic occurred. The information from lspci -vv regarding the card is: 03:00.0 Network controller: Broadcom Corporation BCM4318 [AirForce One 54g] 802.11g Wireless LAN Controller (rev 02) Subsystem: Linksys Device 0049 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx- Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx- Latency: 64 Interrupt: pin A routed to IRQ 11 Region 0: Memory at c4000000 (32-bit, non-prefetchable) [size=8K] Kernel driver in use: b43-pci-bridge Kernel modules: ssb -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. You are the assignee for the bug. -- With best regards, Peter Lemenkov. _______________________________________________ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
