March 2006 - Darwin-kernel - lists.apple.com

Re: AirPort: out of low-memory clusters
by Michael Smith 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Mar 30, 2006, at 6:15 AM, Ken Mankoff wrote: The only thing that has "fixed" anything here is restarting. = Mike _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I appear to have fixed it. I booted from the install CD and did "Repair Disk". I have now been online for 15 minutes and downloaded 700 MB without getting dropped. This email sent to site_archiver(a)lists.apple.com

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Re: Identical repeated panics
by Brian Bechtel 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:cc:in-reply-to:mime-version:content-type:content-transfer-encoding:content-disposition:references; b=q2onTEKlS5hlw4GsFQ/73feE5AintZKSxxSdY4J3mmqmZa99/xgKVZa+EE/cTkuIkHLaSblur47Bu+Hl0eBDaqOcTpUzaDsCpP99AQ8gwXf7CMHWFzbK8p5g3x0x0S0B9oFRwiSY5mt0Yy8WrmQ7emaYtJy/sQZgv5uXBoF2zSA= On 3/30/06, Joaquim Soler i Subils <joaquim.soler(a)gmail.com> wrote: > Any explanation/solution? I hope it's something interesting.... One suggestion: You have a USB serial device attached. In some of the panics, it shows the driver com.mct.driver.mctUSBSerialDriver in the backtrace. Remove that driver from /System/Library/Extensions and reboot. See if the panics stop happening. If you cannot figure out which driver is com.mct.driver.mctUSBSerialDriver, you can search the Info.plist file for each driver. Open a terminal window, and type grep -riIl com.mct.driver.mctUSBSerialDriver /System/Library/Extensions > And finally, a different, minor, but related question. How could I > get into debbuger (like MacBugs with a Mac SE from those times?). GDB is very different than the old MacsBug. A two machine debugger is the only way to completely stop the system and debug, which is what Macsbug used to do. > This month I have only found pdfs about two-machine debugger and > nothing more. If I set the corresponent boot-args in the OpenFirmware > and I press comand-power I get only another hang (without kernel > panic...). At that point, you should follow the steps described in <http://developer.apple.com/documentation/Darwin/Conceptual/KEXTConcept/KEXT…> Good luck. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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Identical repeated panics
by Joaquim Soler i Subils 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:mime-version:to:message-id:content-type:subject:date:x-mailer:from; b=iksM1tgAyJbgLeOF2BcWqSbgZkm1xug4MlaGrzd7t1q0c0FE/RGzEnBADGEQajxhYRUREcPOfGFnnMSYRcwIQSUmGKImcjBNbnyTzH1u9sMpvQCTHpiz3N470d6iPL0NXjEy0zdYvMRWaFhKKKonXsP+c2R+oLwcjMpYmnjPsOQ= Dear list members, Any explanation/solution? I hope it's something interesting.... Thank you very much, Joaquim Soler _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com I am experiencing repeated and very similar kernel panics since one month. Between one and three every day. I am using an iBook 1.33 GHz with 512 RAM (the ones updated last july) and running system 10.4.5. Also a iPod mini and a Wacom tablet with right drivers for Tiger. The panic arises with or without any of them. With or without Airport. With strom or battery. Servers, services and startups: postgresql, iCal and cocoAspell (dictionaries). No problem with them. My expecience with obscure mac troubleshotting doesn't reach the kernel levels so I decided to post this message. I haven't done a zero reinstall from the system yet because I would like first to undertand first what's going on. I have sucessfully passed the Apple Hardware Text and another complete scan of my memory with the Rember utility. And reset PRAM. If you observe the log you will see that the caller (in the log) is always the same and the adresses are always full with zeros. I haven't found any example like this one on the whole web... And no trace about any kernel module or dirty driver (as often are shown in the examples). I have never found a dumped core in /cores or anywhere (althought I edited /etc/hostconfig in order to enable them). And finally, a different, minor, but related question. How could I get into debbuger (like MacBugs with a Mac SE from those times?). This month I have only found pdfs about two-machine debugger and nothing more. If I set the corresponent boot-args in the OpenFirmware and I press comand-power I get only another hang (without kernel panic...). panic.log

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Re: AirPort: out of low-memory clusters
by Ken Mankoff 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com -k. http://bugreport.apple.com/ --Steve Hi list, My airport connection has started acting sporadic. Very high latency, slow connection, and frequent dropping the network altogether. Where I used to detect a dozen networks in my apartment, now there are none, etc. Yesterday my disk filled up. Couldn't write to device errors. I deleted some stuff and now have 7 GB free. I have rebooted since then. There have been no other significant events that I can think of around the time this behavior started. system.log is full of this (about 10 per second): Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:30 gouda kernel[0]: AirPort: out of low-memory clusters I'm posting to this list because it appears to be a kernel level message and Google returns 0 results for this message so I don't know where else to go. System is: Powerbook G4, 10.4.5, 1.5 GB RAM (800M free) Any advice? Thanks, -k. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/sbytnar%40kagi.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… I appear to have fixed it. I booted from the install CD and did "Repair Disk". I have now been online for 15 minutes and downloaded 700 MB without getting dropped. I had previously ran Repair Disk from Disk Utility from my boot disk and it did not correct the problem. On Thu, 30 Mar 2006, Steven Bytnar wrote: I'd suggest that you fill out a bug report. You likely wont get an answer about an AirPort problem from this list. On Thu, Mar 30, 2006 at 12:11:57AM -0500, Ken Mankoff wrote: This email sent to sbytnar(a)kagi.com This email sent to site_archiver(a)lists.apple.com

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Re: AirPort: out of low-memory clusters
by Steven Bytnar 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com User-agent: Mutt/1.4i I'd suggest that you fill out a bug report. You likely wont get an answer about an AirPort problem from this list. http://bugreport.apple.com/ --Steve On Thu, Mar 30, 2006 at 12:11:57AM -0500, Ken Mankoff wrote: > Hi list, > > My airport connection has started acting sporadic. Very high > latency, slow connection, and frequent dropping the network > altogether. Where I used to detect a dozen networks in my apartment, > now there are none, etc. > > Yesterday my disk filled up. Couldn't write to device errors. I > deleted some stuff and now have 7 GB free. I have rebooted since > then. There have been no other significant events that I can think > of around the time this behavior started. > > system.log is full of this (about 10 per second): > > Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters > Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters > Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters > Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters > Mar 29 23:46:30 gouda kernel[0]: AirPort: out of low-memory clusters > > I'm posting to this list because it appears to be a kernel level > message and Google returns 0 results for this message so I don't > know where else to go. > > System is: Powerbook G4, 10.4.5, 1.5 GB RAM (800M free) > > Any advice? > > Thanks, > > -k. > _______________________________________________ > Do not post admin requests to the list. They will be ignored. > Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/darwin-kernel/sbytnar%40kagi.com > > This email sent to sbytnar(a)kagi.com _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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AirPort: out of low-memory clusters
by Ken Mankoff 30 Mar '06

30 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Hi list, system.log is full of this (about 10 per second): Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:29 gouda kernel[0]: AirPort: out of low-memory clusters Mar 29 23:46:30 gouda kernel[0]: AirPort: out of low-memory clusters System is: Powerbook G4, 10.4.5, 1.5 GB RAM (800M free) Any advice? Thanks, -k. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… My airport connection has started acting sporadic. Very high latency, slow connection, and frequent dropping the network altogether. Where I used to detect a dozen networks in my apartment, now there are none, etc. Yesterday my disk filled up. Couldn't write to device errors. I deleted some stuff and now have 7 GB free. I have rebooted since then. There have been no other significant events that I can think of around the time this behavior started. I'm posting to this list because it appears to be a kernel level message and Google returns 0 results for this message so I don't know where else to go. This email sent to site_archiver(a)lists.apple.com

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Re: Kernel panics on OSX 10.3.9 on multiple machines in Win2K network (third attempt)
by Terry Lambert 28 Mar '06

28 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Mar 28, 2006, at 1:52 AM, Ochal Christophe wrote: From the looks of things, at least one of the machines (looks like the laptop) has bad memory. I'd have to check the machine, but it was delivered without any AV software to the costumer, i'll see what i can find out -- Terry _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… On Mon, 2006-03-27 at 18:34 -0800, Terry Lambert wrote: The machine has been tested at our office, no reproducable crashes occured, even under heavy systemload, hardware test also didn't pick up on any ram issue's. This is potentially a thermal or power issue, where your test environment differs from the deployment environment. You can ignore this part of the response, if the machine does not have mismatched memory speed, and it's not third party. It was only one of the failures that looked like that. The weird thing is that all 4 machines started experiancing the same kernel panics on the same day, the only known change i know of, is that the SAN's connected to the Win2K server have been moved to a different location (fysical move), and their network manager insists nothing else was changed, nor were there any updates applied to the server. Since this also happened the 8th of March (the day the kernel panics started occurring on all four macs) leads me to think that it's really a software issue/glitch somewhere, i'm in the dark however, when it comes to solving these. Then whatever's in the middle that wasn't, or isn't in the middle that was, is likely the culprit. It's also possible that there was data corruption on the server itself as a result of physical shock during the mode, and that's now being passed on to the client machines, which are barfing on it. You didn't give the number of machines having the smbfs KEXT in the panic traceback, but if it's more than onem, then this is likely the case. In general clients try to be immune to the server sending them bad things, but you can't always catch everything. The other machine looks to be running a third party KEXT, which is leaking memory in one of the zones (my guess would be AntiVirus software, since in the past they tried to replace system call entry points with their own code drived from OpenDarwin; if we made a change in one of those routines in a point release, they inevitably lead to memory leaks/panics because of the stale code not *exactly* matching the update version). The only way would be two machine debugging, and asking it what's loaded where, so you could resolve a couple of those addresses. Even then, you'd have to get a controlled reproduction of the problem (don't know how hard that would be). It also looks like someone has tuned some of the administrative limits on the number of open fd's up on one of the machines, far past the amount of memory available for such things (a couple of the panics are NULL pointer dererferences following an allocation failure in the M_FILE zoen, which would not occur unless the administrative limits on the machine had been explicitly changed). Where would one change such a setting? Typically, in the server administration settings on the machine. The normal place this is set for SMB in a Samba server, for example, is in its configuration file, or via a GUI configuration tool. The specific limit you are looking for is the hard limit in the setrlimit in the value of RLIMIT_NOFILE, which could be raised as high as 10240, but that number is generally excessive unless you have a large amount of memory in the machine to enable to handle that many open files, and the level of client load (number of smbd processes) that that would entail. The typical failure mode is to try to set this to "unlimited", which is usually one of the allowable options. There are a number of resources available on the web and on developer.apple.com that deal with MacOS X server tuning (e.g. put the last four words there into google and look around a bit). This email sent to site_archiver(a)lists.apple.com

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Re: OpenFirmware memory management?
by Joshua LeVasseur 28 Mar '06

28 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com Joshua On Mar 27, 2006, at 19:36 , Andrei Warkentin wrote: Hello, Thank you for your time. Andrei Evgenievich Warkentin andrey.warkentin(a)gmail.com Cell: (+1) (847) 321-15-55 _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/jtl%40ira.uka.de _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… Don't use open firmware in your kernel, as you don't know what OF is doing behind the scenes. Quiesce open firmware, and have your kernel take control of the processor. If you need a debugger, then consider keeping OF around as a debug console. For a debug console, you can restore the OF environment each time you need to execute an OF callback; this includes restoring the hash table, the segments, etc. that are used by OF. I highly recommend to avoid mixing your kernel's virtual memory infrastructure with OF's; give them different hash tables, segment IDs, etc. Last time I looked at the Darwin boot logic, I noticed that it also avoids using OF, and instead relies on the boot loader to copy the device tree into a canonical format in memory. I'm not sure who else I can approach with this question. I am trying to write a "kernel", and I am fairly confused on the PowerPC front . This is on a 1.33 Ghz iBook, so its a G4 and the OF version is 4.9.3f0. Since the IR and DR bits are set, OF operates in virt- mode. I tried putting it in real-mode, but the machine never booted up again and I needed to perform an uber-reset to get it going again. Right now I've gotten to the point where I'd like control over the virtual memory. I am not familiar with PowerPC MMU, so I was thinking of (at first) relying on claim(...). However, I realized that I still don't know how the address space is utilized by OpenFirmware. Are all mappings identity mappings? So, if OF loaded by kernel at linear 2MB, is it also at 2MB physical? If it is not identity mapped, what ranges are in active use by OF and are to be avoided? Whenever I figure out my way around the PowerPC MMU, is making OF use my routines really as easy as calling set-callback? My only reference are the PowerPC bindings which are more than ten years old, so I'm not sure. Will OF automagically remap all its existing mappings using my routines, or will I be responsible for that? I'd like to keep the client interface functional, as it is currently the only way I can do console output. Is it possible for me to (non-destructively) modify the interrupt/ exception vectors while OF is still in control of VM? (assuming I don't touch ISI/DSI vectors, of course). This email sent to jtl(a)ira.uka.de This email sent to site_archiver(a)lists.apple.com

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Re: Test email
by Quinn 28 Mar '06

28 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com S+E -- Quinn "The Eskimo!" <http://www.apple.com/developer/> Apple Developer Technical Support * Networking, Communications, Hardware _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… At 17:19 +0100 24/3/06, Ochal Christophe wrote: Since i'm not receiving anything, i might aswell test it again Last Friday the lists.apple.com folks updated to a new server. It took a while for the mail to catch up with the change. Everything should be OK now. This email sent to site_archiver(a)lists.apple.com

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Re: Kernel panics on OSX 10.3.9 on multiple machines in Win2K network (third attempt)
by Ochal Christophe 28 Mar '06

28 Mar '06

site_archiver(a)lists.apple.com Delivered-To: darwin-kernel(a)lists.apple.com On Mon, 2006-03-27 at 18:34 -0800, Terry Lambert wrote: > On Mar 27, 2006, at 12:58 PM, Ochal Christophe wrote: > > > Hi all, > > > > First & foremost, my apologies if this gets through multiple times, i > > tried reaching the mailinglist from another email account & failed > > miserably. > > > > Recently, one of my clients started experiancing kernel panics on > > all > > of his macs (2 powerbooks & 2 G5's). All machines run OSX 10.3.9 > > These > > are the kernel panic logs: Machine 1 (PowerBook): ********* > > You are supposed to file a bug for this sort of thing; this list is > not for technical support questions. I tried filing a bug, but wasn't able to log into the bugreporter, will try again later tonight. > From the looks of things, at least one of the machines (looks like > the laptop) has bad memory. The machine has been tested at our office, no reproducable crashes occured, even under heavy systemload, hardware test also didn't pick up on any ram issue's. The weird thing is that all 4 machines started experiancing the same kernel panics on the same day, the only known change i know of, is that the SAN's connected to the Win2K server have been moved to a different location (fysical move), and their network manager insists nothing else was changed, nor were there any updates applied to the server. Since this also happened the 8th of March (the day the kernel panics started occurring on all four macs) leads me to think that it's really a software issue/glitch somewhere, i'm in the dark however, when it comes to solving these. In the 8 years i've been working with & on macs i never had a problem like this > The other machine looks to be running a third party KEXT, which is > leaking memory in one of the zones (my guess would be AntiVirus > software, since in the past they tried to replace system call entry > points with their own code drived from OpenDarwin; if we made a change > in one of those routines in a point release, they inevitably lead to > memory leaks/panics because of the stale code not *exactly* matching > the update version). I'd have to check the machine, but it was delivered without any AV software to the costumer, i'll see what i can find out > It also looks like someone has tuned some of the administrative limits > on the number of open fd's up on one of the machines, far past the > amount of memory available for such things (a couple of the panics are > NULL pointer dererferences following an allocation failure in the > M_FILE zoen, which would not occur unless the administrative limits on > the machine had been explicitly changed). Where would one change such a setting? > If you want help beyond that, you will need to file a bug, and likely > need to be prepared for two machine debugging. I'm willing to do that, however, the costumer seems to be expecting all this to be for free, and fixable in a matter of days *sigh* > Since you are running Panther, however, it's unlikely that the answer > will be something other than "Upgrade to Tiger; most of this code was > rewritten". That route has already been suggested to the costumer, but rejected because "it would cost money" _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel(a)lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.… This email sent to site_archiver(a)lists.apple.com

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