Re: [Bug 515668] New: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware
On Aug 5, 2009, at 4:41 PM, Larry Finger wrote: > Francesco Gringoli wrote: >> On Aug 5, 2009, at 1:07 PM, Peter Lemenkov wrote: >> >>> 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. >>> >>> >> Hi Peter, >> >> many thanks. I added a note on the website. I have a few cards like >> that, I will do some tests to catch the bug. > > Francesco, > > This bug is the same as the one I reported for both my 4311 and my > 4318. When the TX status interrupt is entered for a particular cookie, > the skb is freed, and the buffer pointer is replaced with a NULL. The > kernel panic reported here is the result of detecting a NULL value for > that buffer pointer. I think the conclusion is that the firmware is > calling the interrupt routine with a cookie that was previously > reported. Why? I don't know. Even with the source to look at, firmware > is a big mystery. Hi Larry, D'oh!... so I already had some boards which displayed that behavior!! Ok ok, I will have two more (if the two minipci-e I bought will ever arrive, I'm still waiting) :-) Taking back my old laptop with PCMCIA slot. Cheers, -Francesco > > > Larry > "INFORMATIVA SUL TRATTAMENTO DEI DATI PERSONALI" I dati utilizzati per l'invio del presente messaggio sono trattati dall' Universita' degli studi di Brescia esclusivamente per finalita' istituzionali. Informazioni piu' dettagliate anche in ordine ai diritti dell'interessato sono riposte nell'informativa generale e nelle notizie pubblicate sul sito web dell'Ateneo nella sezione "privacy". Il contenuto di questo messaggio e' rivolto unicamente alle persone cui e' indirizzato e puo' contenere informazioni la cui riservatezza e' tutelata legalmente. Ne sono vietati la riproduzione, la diffusione e l'uso in mancanza di autorizzazione del destinatario. Qualora il messaggio fosse pervenuto per errore, preghiamo di eliminarlo. ___ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
Re: [Bug 515668] New: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware
Francesco Gringoli wrote: > On Aug 5, 2009, at 1:07 PM, Peter Lemenkov wrote: > >> 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. >> >> > Hi Peter, > > many thanks. I added a note on the website. I have a few cards like > that, I will do some tests to catch the bug. Francesco, This bug is the same as the one I reported for both my 4311 and my 4318. When the TX status interrupt is entered for a particular cookie, the skb is freed, and the buffer pointer is replaced with a NULL. The kernel panic reported here is the result of detecting a NULL value for that buffer pointer. I think the conclusion is that the firmware is calling the interrupt routine with a cookie that was previously reported. Why? I don't know. Even with the source to look at, firmware is a big mystery. Larry ___ Bcm43xx-dev mailing list Bcm43xx-dev@lists.berlios.de https://lists.berlios.de/mailman/listinfo/bcm43xx-dev
Re: [Bug 515668] New: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware
On Aug 5, 2009, at 1:07 PM, Peter Lemenkov wrote: > 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. > > Hi Peter, many thanks. I added a note on the website. I have a few cards like that, I will do some tests to catch the bug. Cheers, -FG > -- Forwarded message -- > From: > 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- > SERR- Latency: 64 > Interrupt: pin A routed to IRQ 11 > Region 0: Memory at c400 (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 --- Francesco Gringoli, PhD - Assistant Professor Dept. of Electrical Engineering for Automation University of Brescia via Branze, 38 25123 Brescia ITALY Ph: ++39.030.3715843 FAX: ++39.030.380014 WWW: http://www.ing.unibs.it/~gringoli "INFORMATIVA SUL TRATTAMENTO DEI DATI PERSONALI" I dati utilizzati per l'invio del presente messaggio sono trattati dall' Universita' degli studi di Brescia esclusivamente per finalita' istituzionali. Informazioni piu' dettagliate anche in ordine ai diritti dell'interessato sono riposte nell'informativa generale e nelle notizie pubblicate sul sito
Fwd: [Bug 515668] New: kernel BUG at drivers/net/wireless/b43/dma.c:1406! when using openfwwf firmware
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: 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- SERR- 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
