Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 3 Feb 2003 10:39:15 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: [BUG] vmalloc, kmalloc - 2.4.x |
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On 3 Feb 2003, Grzegorz Jaskiewicz wrote:
> few days ago i started to port driver for our hardware in company from > windows to linux. It is simple ISA card, which gives me interrupt each > 8ms. So i can check it state and latch some sort of watchdog on it - > saying that i am still running (just for security, if system hangs card > is blocking all inputs/outputs). > > But anyway, i was collecting all data from the card in dynamically > allocated memory. This gives me at least 300 * 20 bytes allocated. i > have sigle small allocation running on each interrupt. > > Driver is working fine under win2k even if i collect as much as 10000 > allocations, afterwards system uses loads of processor. > > Linux (2.4.19 ,2.4.20, 2.4.21-pre[1,2,3,4] i tried so far) gives me oups > arount 80th allocation. > > >From http://hit-six.co.uk/~gj/testmod.tar.bz2 you can download simple > module that shows what happends. But be carefull, it oupses very fast ! > > system is running up2dated Debian(stable), and i am using gcc version: > gcc version 2.95.4 20011002
I doubt that there is a bug in vmalloc or kmalloc as you state because the machine wouldn't work at all. So, I tried to download your sources. The file web-page claims that it's a ".bz2" file. However, once downloaded, it becomes a "*.tar.tar" file (whatever that is). An attempt to extract it with `tar` as `tar -xzf` fails, as does `tar -xf`. Attempts to un-bz2 it with bzip2 or even bzip2recover fails also.
So, if you want some help finding the problems, please email me a 'tar.gz` file directly.
Cheers, Dick Johnson Penguin : Linux version 2.4.18 on an i686 machine (797.90 BogoMips). Why is the government concerned about the lunatic fringe? Think about it.
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