Most recent kernel where this bug did *NOT* occur: Unknown, never noticed it in 2.6.20-15-generic (Ubuntu) Distribution: Ubuntu Hardware Environment HP Compaq nc6320 Software Environment: Gnome Problem Description: Kernel oops in dmesg: Steps to reproduce: Unknown Other stuff: As it looks filesystem related, the output of mount: /dev/sda2 on / type ext3 (rw,errors=remount-ro,commit=600) proc on /proc type proc (rw,noexec,nosuid,nodev) /sys on /sys type sysfs (rw,noexec,nosuid,nodev) varrun on /var/run type tmpfs (rw,noexec,nosuid,nodev,mode=0755) varlock on /var/lock type tmpfs (rw,noexec,nosuid,nodev,mode=1777) procbususb on /proc/bus/usb type usbfs (rw) udev on /dev type tmpfs (rw,mode=0755) devshm on /dev/shm type tmpfs (rw) devpts on /dev/pts type devpts (rw,gid=5,mode=620) lrm on /lib/modules/2.6.22-5-generic/volatile type tmpfs (rw) binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc (rw,noexec,nosuid,nodev)
Created attachment 11651 [details] dmesg output showing the Oops (twice)
Similar to http://bugzilla.kernel.org/show_bug.cgi?id=8473 . Can you try Andrew's debug patch (at this URL): http://marc.info/?l=linux-mm-commits&m=118077338207970&w=2
So far I've not been able to reproduce that Oops, or get any output from the debug patch. I'd been poking about a bit with lshw and gnome-session, (flicking between console and X11 quite a bit) when it occurred before, and have not seen it since.
I had the Akpm's patch (and since 2.6.22-rc3 there is some diagnostic with a stack dump there). Haven't seen the bug since the -rc3.
I remember exactly same backtrace and it was flipping tty fops. *** This bug has been marked as a duplicate of bug 8473 ***