| johanbr | cwillu: kernel oopses when it tries to allocate memory | 00:05 |
|---|---|---|
| johanbr | what are you doing when that happens? | 00:05 |
| cwillu | johanbr, I'll come back to the machine and it's locked up (monitors are in stand-by, can't ssh in, etc) | 00:15 |
| cwillu | so my best answer is "nothing" :p | 00:15 |
| johanbr | what was it doing at the time? | 00:15 |
| cwillu | happens every couple days | 00:15 |
| cwillu | again, as far as I know, there is nothing out of the ordinary running at that time | 00:15 |
| johanbr | basically idle? | 00:17 |
| cwillu | yep | 00:17 |
| cwillu | I _do_ have a daily backup happening, but I turned it off for a couple days, still experienced this hang | 00:17 |
| johanbr | that shouldn't happen | 00:20 |
| johanbr | oopsing when allocating memory makes me think "RAM problem" | 00:21 |
| johanbr | have you run memtest? | 00:21 |
| cwillu | I ran memtest on it for about 24 hours a week or two ago | 00:21 |
| cwillu | no errors | 00:21 |
| cwillu | 64bit cpu running a 32bit install, in case that's relevant | 00:22 |
| johanbr | how much ram? | 00:22 |
| cwillu | 2 gigs | 00:22 |
| johanbr | hmm... no immediate guess | 00:24 |
| johanbr | do you have other oopses captured? | 00:24 |
| cwillu | this was the first netconsole capture I've done on it, but it lives long enough to write to the log files | 00:27 |
| cwillu | May 21 13:02:43 ralph-desktop kernel: [423191.559094] BUG: unable to handle kernel NULL pointer dereference at 00000001 | 00:27 |
| cwillu | looks like I've got a couple dozen in /var/log/kern.log.*.gz | 00:29 |
| cwillu | q | 00:29 |
| johanbr | what's the line corresponding to [129075.799432] IP: [<c01bffcf>] __kmalloc+0x6f/0x1b0 ? | 00:30 |
| cwillu | this started after upgrading to jaunty, the issue remains under the 2.6.30 kernels as well | 00:30 |
| cwillu | one sec | 00:30 |
| cwillu | May 21 13:02:43 ralph-desktop kernel: [423191.559103] IP: [<c01b8099>] kmem_cache_alloc+0x49/0xb0 | 00:30 |
| cwillu | that one's off 2.6.28-12-generic | 00:31 |
| johanbr | okay | 00:31 |
| cwillu | actually, give me one sec | 00:31 |
| cwillu | I just lied to you :p | 00:31 |
| cwillu | oh, nevermind, I didn't lie | 00:31 |
| johanbr | :) | 00:31 |
| johanbr | seems like it consistently crashes when trying to allocate memory | 00:31 |
| cwillu | May 29 00:32:59 ralph-desktop kernel: [567299.666278] IP: [<c01c44c7>] __kmalloc+0x67/0x180 is the one that actually matches the second one I linked above | 00:32 |
| johanbr | alright... same thing, basically | 00:32 |
| cwillu | but kmem_cache_alloc shows up on some of them too | 00:32 |
| cwillu | will jaunty boot under a 8.10 kernel? | 00:33 |
| johanbr | that should work | 00:33 |
| johanbr | but you said it showed up under 2,6,28? | 00:33 |
| cwillu | yes | 00:33 |
| johanbr | oh, never mind... | 00:34 |
| cwillu | I'm thinking "regression added in 2.6.28 that hasn't been noticed consistently yet", but my thoughts are suspect :p | 00:34 |
| johanbr | it didn't happen in intrepid? | 00:34 |
| cwillu | not that I know of | 00:34 |
| johanbr | have you run intrepid since the bug first started appearing? | 00:35 |
| cwillu | no | 00:35 |
| johanbr | a bug in the kernel memory allocation would've been quickly noticed | 00:35 |
| johanbr | so I still suspect some kind of hardware problem | 00:35 |
| cwillu | I updated to jaunty because of the improved wacom handling (was basically unusable in intrepid due to how intrepid's xserver handled hotplugging), a day or two later he started complaining about lockups | 00:35 |
| johanbr | does the machine have swap? | 00:36 |
| cwillu | yes | 00:36 |
| johanbr | could also be a disk problem | 00:36 |
| johanbr | if you have some unpartitioned space (or an expendable partition) you could try using a different swap partition | 00:37 |
| * cwillu turns off swap and warns him of potentially odd behaviour :p | 00:37 | |
| johanbr | you can also do that :) | 00:38 |
| johanbr | how often does the bug strike? | 00:38 |
| cwillu | once a day, once every couple days | 00:42 |
| johanbr | alright | 00:43 |
| johanbr | at the moment, I don't have any other ideas | 00:43 |
| johanbr | try running without swap for a while and see if that changes anything | 00:43 |
| cwillu | will do | 00:45 |
| Sarvatt | is the PAE x86 server kernel getting the axe? | 05:00 |
| zeroprog | hey guys im trying to find the docs on my device....i did lsusb and found WinChipHead but when i google it the only sites that appear are in some asian language.....is there any other way i can figure out what i need to write the driver | 09:30 |
| CarlFK | log_buf_len=nSets the size of the printk ring buffer, in bytes. Format: { n | nk | nM } n must be a power of two. The default size is set in the kernel config file. http://www.kernel.org/doc/Documentation/kernel-parameters.txt | 15:59 |
| CarlFK | Um... I don't see it in juser@dell30:~$ grep -i log_buf /boot/config-2.6.28-11-generic | 16:00 |
| CarlFK | CONFIG_LOG_BUF_SHIFT=17 | 16:00 |
| CarlFK | "The default size is set in the kernel config file." sounds odd. | 16:01 |
| darthanubis | I need an 8.10 kernel config, or a 9.10 kernel config | 17:26 |
| mohan_ | hi.. | 17:54 |
| mohan_ | i am using ubuntu jaunty.. | 17:54 |
| mohan_ | any latest RT kernel ? | 17:54 |
| mohan_ | hi.. anybody pls.. | 17:56 |
| mohan_ | i need RT kernel for jaunty.. | 17:57 |
| mohan_ | the current RT kernel hangs my system.. :( | 17:57 |
| mohan_ | hey.. | 18:02 |
| mohan_ | anybody here? | 18:02 |
| cwillu | mohan_... should stick around longer next time :( | 22:04 |
| darthanubis | https://bugs.launchpad.net/ubuntu/+source/virtualbox-ose/+bug/347487 | 22:40 |
| ubot3 | Malone bug 347487 in virtualbox-ose "starting virtual machine in virtualbox-ose freezes system" [Medium,Confirmed] | 22:40 |
| arielCo | hello, is this a good place for questions about upgrading my kernel? | 22:46 |
| arielCo | I'm going to upgrade to 2.6.30, downloaded from kernel.ubuntu.com, but the package description warns me that I may want to install the -generic metapackage instead, and I cannot find it. Is it really necessary? | 22:52 |
| darthanubis | arielCo, nothing is REALLY necessary | 22:56 |
| darthanubis | arielCo, https://wiki.ubuntu.com/KernelMainlineBuilds | 22:56 |
| arielCo | @darthanubis: going | 22:56 |
| darthanubis | ?? | 22:57 |
| arielCo | Okay, that's what I did the last time I tried (2.6.29). That time, the b44 driver did not autoload on boot and I had to type 'modprobe b44' every time I booted. | 22:58 |
| johanbr | that's unrelated to not installing the -generic package | 23:16 |
| arielCo | Johan, thanks. Do you know where can I find info on autoloading / hw detection? I'm about to upgrade via dpkg, and I want to understand the issue so I can transmit simple instructions to anyone doing the same :) | 23:22 |
| === lifeless is now known as all | ||
| === all is now known as lifeless | ||
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