Comment 23 for bug 1144322

Revision history for this message
Gurvender Bahia (gurvender-bahia) wrote : Re: Kernel Panic in 3.8.0, 3.8.1 & 3.8.2 when diconnecting from network manager, using ppp0 to connect to net

Hi

Today I downloaded kernel from: http://kernel.ubuntu.com/~jsalisbury/lp1144322
& installed these 5 packages:
linux-headers-3.7.0-030700_3.7.0-030700.201305131528_all.deb
linux-headers-3.7.0-030700-generic_3.7.0-030700.201305131528_i386.deb
linux-image-3.7.0-030700-generic_3.7.0-030700.201305131528_i386.deb
linux-source-3.7.0_3.7.0-030700.201305131528_all.deb
linux-tools-common_3.7.0-030700.201305131528_all.deb

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After installing this kernel:
1) connected to "pppoe" (using mobile phone modem over bluetooth, EDGE connecting speed-230kbps), ok
2) disconnected from pppoe, got a error & screen went to black window with text. I was able to move mouse, I pressed "CTRL+ALT+F1", then I pressed "CTRL+ALT+F7" & I was able to again see my desktop. (I was able to copy & save "kern.log", which I'm attaching below)
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one interesting line in this kern.log is:
May 15 20:13:58 HSB kernel: [ 100.190599] Kernel BUG at c106539a [verbose debug info unavailable]
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3) Tried unsuccessfully to connect to pppoe again.
4) unchecked "Enable Networking" & our old friend the Regression BUG resurfaced. I got a black window with text.
The last 2 lines of error on this screen which I wrote down are below:
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[ 303.190936] Kernel panic - not syncing: Fatal exception in interrupt
[ 303.192790] panic occurred, switching back to text console
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Now since the computer was in a complete frozen state from which I couldn't recover I had to restart the machine by pressing the START button for 30 plus seconds.