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Old 09-24-2012, 01:36 PM   #1
chikidu
LQ Newbie
 
Registered: Sep 2012
Distribution: Debian squeeze
Posts: 9

Rep: Reputation: Disabled
Bug: unable to handle kernel NULL pointer dereference at 0000000000000020

Hi everybody!
Well the problem is the following. The other day I was trying to install compat-wireless, so I had to install the linux-headers package. After installing that package I made sure that the /lib/firmware/build exist and then I started compiling compat-wireless, how ever I was unable to install it.
Since I did that I'm unable to boot, when linux is loading it stop working showing me this:

Code:
Starting Hardware abstraction layer: hald[    19.168205] Bug: unable to handle kernel NULL pointer dereference at 0000000000000020
[    19.169342] IP: [<ffffffff8119bdc9>] swiotlb_bounce+0x35/0x39
[    19.170502] PGD: 0
[    19.171632] Oops: 0002 [#1] SMP
But sometimes it doesn't happen that, and it loads the graphic enviorment but it crashes after a few seconds. Some other times I get the following error:

Code:
[     17.893181]   [<ffffffff81053d6f>]  ? __do_softirq+0xdd/0xa6
[     17.894459]   [<ffffffffa017bb7f>]  ? rtl8192_interrupt+0x2cf/0x430  [r8192_pci]
[     17.895728]   [<ffffffff81011cac>]  ? call_softirq+0x1c/0x30
[     17.897028]   [<ffffffff8101322b>] ?  do_softirq+0x3f/0x7c
[     17.898276]   [<ffffffff81053bdf>]  ? irq_exit+0x36/0x76
[     17.899514]   [<ffffffff81012922>]  ? do_IRQ+0xa0/0xb6
[     17.900756]   [<ffffffff810114d3>]  ? ret_from_intr+0x0/0x11
[     17.901983]   <EOI>   [<ffffffff8102afff>]  ? hpet_legacy_next_event+0x0/0x3f
[     17.903228]   [<ffffffff810168c1>]  ? sched_clock+0x5/0x8
[     17.904464]   [<ffffffffa0169509>]  ? acpit_idle_enter_bm+0x27d/0x2af  [processor]
[     17.905715]   [<ffffffffa0169502>]  ? acpit_idle_enter_bm+0x276/0x2af  [processor]
[     17.906941]   [<ffffffff8123a2c6>]  ? cpuidle_idle_call+0x94/0xee
[     17.908173]   [<ffffffff8100fe97>]  ? cpu_idle+0xa2/0xda
[     17.909420]   [<ffffffff8151c140>]  ? early_idt_handler+0x0/0x71
[     17.910658]   [<ffffffff8151ccdd>]  ? start_kernel+0x3dc/0x3e8
[     17.911943]   [<ffffffff8151c3b7>]  ? x86_64_start_kernel+0xf9/0x106
[     17.913214]   [drm:drm_fb_helper_panic]  *ERROR* panic occurred, switching back to text console
[     17.914509]   BUG: scheduling while atomic: swapper/0/0x10000100
[     17.915807]   Modules linked in: uinput tuse loop snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq snd_timer i915 uvcvideo drm_kms_helper videodev v411_compat snd_seq_device drm v412_compat_ioct132 snd i2c_algo_bit soundcore psmouse r8192_pci(C) snd_page_alloc video evdev i2c_core rfkill button processor output pcspkr serio_raw battery ac ext3 jbd mbcache sg sd_mod crc_t10dif sr_mod cdrom fan ahci sdhci_pci sdhci uhci_hcd libata thermal thermal_sys scsi_mod r8169 ehci_hcd mii m mc_core led_class usbcore nls_base [last unloaded: scsi_wait_scan]
[      17.917209]  CPU 0:
[      17.917209]  Modules linked in: uinput tuse loop snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq snd_timer i915 uvcvideo drm_kms_helper videodev v411_compat snd_seq_device drm v412_compat_ioct132 snd i2c_algo_bit soundcore psmouse r8192_pci(C) snd_page_alloc video evdev i2c_core rfkill button processor output pcspkr serio_raw battery ac ext3 jbd mbcache sg sd_mod crc_t10dif sr_mod cdrom fan ahci sdhci_pci sdhci uhci_hcd libata thermal thermal_sys scsi_mod r8169 ehci_hcd mii m mc_core led_class usbcore nls_base [last unloaded: scsi_wait_scan]
[      17.917209]  Pid: 0, comm: swapper Tainted: G     D  C 2.6.32-5-amd  #1 Satellite M505
[      17.917209]  RIP: 0010: [<ffffffffa0169509>]    [<ffffffffa0169509>]  acpi_idle_enter_bm+0x27d/0x2af  [processor]
[      17.917209]  RSP: 0018:ffffffff8142fe88     EFLAGS:  00000246
[      17.917209]  RAX: 0000000000010360  RBX:  ffff88013eb565c0  RCX:  0000000420e9c840
[      17.917209]  RBP: ffffffff810114ce  R08:  ffffffff810168c1  R09:  ffff88013eb5600c
[      17.917209]  R10: 12b725a1bb42e89  R11: ffffffff8102afff  R12: 0000000000000000
[      17.917209]  R13: 0000000000000800  R14: ffffffff8106f6b7  R15: 0000000000000092
[      17.917209]  FS:   0000000000000000(0000)  GS:ffff880005200000(0000)  kn1GS:0000000000000000
[      17.917209]  CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[      17.917209]  CR2: 0000000000000020  CR3: 0000000001001000 CR4: 0000000000406f0
[      17.917209]  DR0: 0000000000000000  DR1: 0000000000000000  DR2: 0000000000000000 
[      17.917209]  DR3: 0000000000000000  DR6: 00000000ffff0ff0  DR7: 0000000000000400
[      17.917209]  Call Trace:
[      17.917209]    [<ffffffffa0169502>] ? acpi_idle_enter_bm+0x276/0x2af  [processor]
[      17.917209]    [<ffffffff8123a2c6>] ? cpuidle_idle_call+0x94/0xee
[      17.917209]    [<ffffffff8100fe97>] ? cpu_idle+0xa2/0xda
[      17.917209]    [<ffffffff8151c140>]  ? early_idt_handler+0x0/0x71
[      17.917209]    [<ffffffff8151ccdd>]  ? start_kernel+0x3dc/0x3e8
[      17.917209]    [<ffffffff8151c3b7>]  ? x86_64_start_kernel+0xf9/0x106
I'd really apreciate some help.
I think this is caused by compat-wireless but I don't know how to fix it.
I can just boot in rescue mode.
I use Debian Squeeze and my kernel version is: 2.6.32-5-amd64

Thank you for your help.
Last edited by chikidu; 09-25-2012 at 11:46 AM.
 
Old 09-26-2012, 06:47 PM   #2
smallpond
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Registered: Feb 2011
Location: Massachusetts, USA
Distribution: Fedora
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rtl8192 is Realtek wifi. The driver should be r8192se_pci for on-board, or r8192s_usb for a USB device. What is compat_wireless and why do you need to compile it?
 
Old 09-26-2012, 07:09 PM   #3
chikidu
LQ Newbie
 
Registered: Sep 2012
Distribution: Debian squeeze
Posts: 9

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by smallpond View Post
rtl8192 is Realtek wifi. The driver should be r8192se_pci for on-board, or r8192s_usb for a USB device. What is compat_wireless and why do you need to compile it?
Yeah I know that rtl8192 is Realtek wifi, however I need compat-wireless in order to use an usb network adapter that has a chipset RT2870/RT3070, it should work with the driver rt2800usb. Compat-wireless is a Linux project that allows you to download many drivers, in case you donīt have any other option. You can check it out here http://linuxwireless.org/en/users/Download/stable/
The instructions to install it come right there.
Hope you can help me out.
Thanks
 
Old 09-26-2012, 07:36 PM   #4
smallpond
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Registered: Feb 2011
Location: Massachusetts, USA
Distribution: Fedora
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looks like compat-wireless-2.6.32.16.tar.bz2 is the oldest version in their archive, last updated June 2010. If you need something newer and more stable you might need to run a newer kernel.
 
Old 09-26-2012, 07:43 PM   #5
chikidu
LQ Newbie
 
Registered: Sep 2012
Distribution: Debian squeeze
Posts: 9

Original Poster
Rep: Reputation: Disabled
Quote:
Originally Posted by smallpond View Post
looks like compat-wireless-2.6.32.16.tar.bz2 is the oldest version in their archive, last updated June 2010. If you need something newer and more stable you might need to run a newer kernel.
Yeah it's the oldest stable version indeed, I wouldn't like to install a newer kernel because, in debians case, the one I have is the latest stable version right? And I'm kind of new using Linux so I think it's better if I use a stable version.
The problem I have right now is that I'm not able to boot ad I've now idea of how to fix it
 
  


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