Programming :: Netlink Sockets In Kernel And Ethernet Driver - Kernel Crash
Aug 31, 2010
I write the network driver. Transmission of packets in user space I do through netlink socket`s. In user space there is a handling of packets and their transmission on other device (however, it isn't important).
Problem in that any time, packets through the driver in system, and is reverse, are transferred normally. But then there comes the moment when the kernel crash. If to look in syslog it seems to me that comes deadlock. Also I think that it is related with netlink socket`s.
I can't find the information on that anywhere how correctly to use netlink socket`s in kernel space. Can at you will any a reason into the account of synchronization of sockets and the driver in kernel space?
I am looking for a way to delete the systems default gateway from the routing table via the NETLINK API.Unfortunately, the documentation I found about NETLINK is incomplete.There are some basics (communicating with the kernel, reading the routing table) but not much more.Does anyone know the packet format for deleting a routing table entry, especially deleting the default gateway? I can set or change the default gateway with the following parameters (there are more, but I left out all the non-essential ones):
I am trying to retrieve an interface's MAC address using netlink address. I got to a point, where I am able to parse the reply for 'RTM_GETLINK' till 'case IFLA_ADDRESS'. After that, I have no idea to print the MAC address.
my problem is on installing nvidia driver on fc12 32bit but, first of all, as i understood the pae kernel requires more than 4gb of ram,i have a 2.2 ghz cpu with 2 gb ram,but when i run command:uname -r it answers: 126.96.36.199-127.PAE [i have fc12 32 bit] when we try to download linux we have a 32bit edition or 64bit edition,do we have an edition which is only for pae? or when we install for example the 32bit edition on a computer with more than 4gb of ram then the kernel automatically will change to be a pae kernel??
With the recent upgrade kernel, my ATI driver can no longer work. After upgrading to the new kernel, upon reboot I would get stuck at the "checking battery status" and can't boot into kubuntu.
I'm running Kubuntu 10.10 64 on intel i5 with radeon hd 4870.
So I thought I messed something up since I was fooling around with conky script the day before. I did a clean install of kubuntu 10.10 64 and reset all my settings and my files. At this point, everything works smoothly and I can reboot multiple times without a problem.
I proceeded to install the Radeon catalyst driver following the documentation, which worked perfectly for me on the previous kernel. After rebooting, I can no longer get pass the "checking battery state" black screen. I had to boot into safe book, uninstall all fglrx and also delete xorg.conf to be able to boot back in normally.
I installed the latest kernel liquorix (2.6.35) but when i want to install the Nvidia driver downloaded on the Nvidia website (256.53), i have an error message because Nvidia doesn't found the kernel source tree.
I install linux-image-2.6.35-6.dmz.2-liquorix-686_2.6.35-16_i386.deb, linux-headers-2.6.35-6.dmz.2-liquorix-686_2.6.35-16_i386.deb and build-essential. I don't understand why the installation doesn't works.
I am learning about net filters and I am practicing some sample programs on it. I am very new to this and I have a general query. I got the packet to a desired function using PRE_ROUTING hook. Now how do I frame a packet from this point? I am just trying to simulate a echo client server program in the kernel level using these hooks. Any useful info on sockets in the kernel level?
i am trying learn to program linux kernel modules and smoothly transition in device driver programming. I have a year and a half worth of programming in C and have been using linux for years!! But my question is how do i compile a module? I got as far as coding it but am stuck as of now.
I would like to get my Slackware 11 to work with the Broadcom NetLink BCM5787 onboard Ethernet Cards (x2). I have downloaded the tg3 driver from the Broadcom site. I copied and extracted the driver onto the Linux harddisk. When I wanted to build it I got the message, tg3_compat.h: error : redefinition of 'msecs_to_jiffies'previous delay.h : error: definition 'msecs_to jiffies" was here"
i'm using this guide videos - howto: debian linux kernel compilation, part 1 and the author says i need kernel 2.6.26 this version of kernel doesnt longer exist in kernel.org website and the only 2.6.26 i found is a patch here. should i use the patch? or download another version of kernel?
The best word that suits me to introduce is I am a novice! :-) but it is the difficult part get over with the new things and learnings!
Well once such situation made me introduce me to you is "Kernel Crash". I've recently installed Fedora 14 64 bit version on my HP HDX premium series, since then this Kernel crash is chasing me down! code...
Since I updated the Kernel I have the problem that the NIC crashes, with following failure:
May 9 08:53:26 server kernel: [ 292.704044] ------------[ cut here ]------------ May 9 08:53:26 server kernel: [ 292.704054] WARNING: at /usr/src/packages/BUILD/kernel-desktop-188.8.131.52/linux-2.6.37/net/sched/sch_generic.c:258 dev_watchdog+0x233/0x240()
I wasn't using my laptop for at least a few hours, but when I looked at it, it had seemed to crash. I am hoping to figure out what caused this, and to prevent it from happening again. I believe it has something to do with drm or b43 as that is what I could decipher from the screen. I have checked some logs and found nothing irregular. I do not want this to happen again. I am running kernel 184.108.40.206 with no patches and a custom config tailored to my processor. The reason I am running 220.127.116.11 is because of support for my Wifi.
I using only Livecd CentOS 5.4 and my system crash in day about ~3-5 times , so I tired and want to know why this happen. (before I used live-cd 5.3 about 3 weeks and this problem still was. info : Linux livecd. localdomain 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 athlon i386 GNU/Linux.I load system perfect and If I just browsing then I will have crash after 5 hours latter , but if I install wine , xmms,lame,xmms-mp3,k3b-mp3,flash-plugin and after installing software I will look movies from internet , or lisining music on xmms mp3 format - my system UPTIME max will be ~30 minutes or less..And I want to ask, or in Live-cd I can start Firewall ? Becouse I think it's not started and then I try to ENABLE its looks like not responding.
Sound disappears as soon as I try to use an application e.g. News Video Fox, CNN, BBC or playing a video disk or cd disk, and a kernel module crash is reported (listed below from logs) After this happens no sound, and the desktop freezes (X11 only Linux is fine). Restarting X obviously do not solve the problem.
It seems that Fedora 12 has sever problems with Intel Sound cards.
I guess it is not really a Kernel developers problem but more the authors for the sound module causing the crash. I already reported it through the popup to "kernel-oops" by clicking on the "black screen" popup reporting the crash on FC12.
Here follows the logs containing the crash info.
WARNING: at sound/pci/hda/hda_intel.c:565 azx_send_cmd+0x36/0x1df [snd_hda_intel]() (Tainted: G W ) Hardware name: Macmini2,1 BUG?
Running Karmic on my laptop, I get very occasional kernel panics (suspect it has something to do with the Broadcom WiFi because it only seems to happen with heavy network traffic or HDD access), but just my lucky, this time it Panic'd on me during my recent update -> linux-kernel 2.6.31-20. My system still 'works', but I get the following when doing any other updates, now:
Code: sudo dpkg --configure -a [sudo] password for tango: Setting up linux-image-2.6.31-20-generic (2.6.31-20.57) ... dpkg (subprocess): unable to execute installed post-installation script: Exec format error dpkg: error processing linux-image-2.6.31-20-generic (--configure): subprocess installed post-installation script returned error exit status 2 dpkg: dependency problems prevent configuration of linux-image-generic: linux-image-generic depends on linux-image-2.6.31-20-generic; however: Package linux-image-2.6.31-20-generic is not configured yet. dpkg: error processing linux-image-generic (--configure): dependency problems - leaving unconfigured dpkg: dependency problems prevent configuration of linux-generic: linux-generic depends on linux-image-generic (= 18.104.22.168.33); however: Package linux-image-generic is not configured yet. dpkg: error processing linux-generic (--configure): dependency problems - leaving unconfigured Errors were encountered while processing: linux-image-2.6.31-20-generic linux-image-generic linux-generic
Now I cannot seem to get rid of that, and of course, I am stuck in the prior version. Granted everything 'works' - but it bothers me. What's the best way to go about tracking down and hashing out a problem like this?
I'm using Squeeze and icedove and iceweasel and I've installed the package linux-image-2.6.36-2.dmz.2-liquorix-686. It works fine on my Dell 1521 Inspiron laptop with only one exception. If I'm surfing the web or checking my mail via a wired internet connection I'm fine... if I'm surfing the web or checking my mail via a wifi connection everything is fine... but if I happen to forget to connect to a wifi connection, and I'm in a situation where a wired connection is not available, I can start iceweasel (it doesn't do anything constructive), but checking my mail with icedove (simply starting the program) crashes my computer.
If I boot up with the 2.6.32-5 kernel, the one that's in the regular debian repository, I can not duplicate the crash. Somewhere I read that the liquorix kernels are optimized for a desktop computer. Is this my problem? Is it something else?
During the crash my screen goes to a text console and I see syslogd messages on the screen -- which I cannot reproduce here.
I'm running Scientific Linux 5.5 (equivalent to CentOS 5.5), and over the past two weeks, I have had a problem with my root partition filling up, preventing anyone from logging into the server.After searching for large files, and finding none, I was mystified when du told me that the root partition had only 660 MB of disk space used, whilst df showed it full. The problem was this: the /var/crash directory had been filled up by an 8GB crash file. Now, I'm a 'proper' sysadmin and make sure that /var has its own mount point, so the crash should not have touched the root partition at all. Except it did - instead of writing to /var/crash on /dev/mapper/VolGroup00-LogVol04 which is mounted as /var, it wrote the file to /dev/md0 directly, so when all the file systems were mounted, those files were hidden under the mounted /var.
Code: [Sun May 22 04:02:06 2011] [notice] SIGHUP received. Attempting to restart (98) Address already in use: make_sock: could not bind to address 0.0.0.0:80 no listening sockets available, shutting down Unable to open logs
Above message is from /etc/httpd/logs/error_log.1. Saturday morning I reinstall my server. After finish, no error. I can access my HTTP server. Monday morning it has crashed. I don't know what is the meaning about this message.
I have a fresh installation from the demo ISO image of F14 running on an Acer TravelMate 4200. The system is a Dual Boot with win Vista. Windows Vista runs without any problems but when using F14 a kernal crash constantly occurs and it then hard freezes or hangs and the machine needs to be cold booted. There is nothing in particular that I am doing either, the problem happens when the machine is idol or when I am working in various apps.
The F14 system is completely up to date running kernel version 22.214.171.124-91.fc14.i686. The following error below is from the automatic bug reporting tool and I have reported this using the tool:
Package: kernel Latest Crash:Sat 04 Jun 2011 14:55:00 Command: not_applicable Reason: BUG: unable to handle kernel NULL pointer dereference at 000000f8 Comment: None Bug Reports:
I'm using centos 5.4 on an Hp Compaq 500B, 4GB ram,I have just installed centos when i try to boot the pc it says "memory for crash kernel not in permissible range, pci not using mmconfig" then it shuts down after a while.
I've installed LINUX for the very first time and when i rebooted it, i found this message on my screen "Memory for crashkernel notwithin permissible range" I tried all my attempt like given memory to kernel with this command "crashkernel=64M@16M" but no luck... Finally i tried to boot into single user mode might be it helped me..but same results