In the last six hours had two more 'Oops's followed by wedges. One time I inserted a USB stick, there was another 'Oops' and about 2 minutes last the entire system began wedging. Didn't seem to be able to write to the file system. Apps in memory and not writing to disk remain responsive. The 'Oops' is a attached, but I don't get much evidence from the wedge since the system can't write anything to the logs.
What appears to be in common is all the 'Oops' seem to related to 'sysfs'. From the info collected here could it be 'sysfs' causing all this grief? All of this grief appears to have arrive with Jaunty kernel, never seen anything like this with Intrepid. --------------- [25352.636072] usb 2-2: new high speed USB device using ehci_hcd and address 4 [...] [25357.816725] sdb: sdb1 [25357.927293] sd 5:0:0:0: [sdb] Attached SCSI removable disk [25357.927543] sd 5:0:0:0: Attached scsi generic sg2 type 0 [25358.551129] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 [25358.551135] IP: [<ffffffff8041be4b>] rb_insert_color+0x3b/0x140 [25358.551146] PGD 7a5b9067 PUD 2509b067 PMD 0 [25358.551150] Oops: 0000 [#5] SMP [25358.551154] last sysfs file: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-4/2-4:1.7/net/usb0/statistics/collisions ---------------- ** Attachment added: "Oops-on-USB-insertion.txt" http://launchpadlibrarian.net/26533862/Oops-on-USB-insertion.txt ** Summary changed: - Kernel Oops (NULL Pointer) in 2.6.28-12 + Kernel Oops (NULL Pointer) in 2.6.28-12 (sysfs problem?) ** Description changed: - The symptom was the 'CPU Frequency Scaling Monitor' quitting, and when + A range of kernel 'Oops' and eventually file system-failure crashes that + seem to involve 'sysfs'. + + One symptom was the 'CPU Frequency Scaling Monitor' quitting, and when re-started, quitting again immediately. Looking at dmesg there is a kernel NULL pointer dereference 'Oops' for every time 'CPU Frequency Scaling Monitor' died. Linux shim 2.6.28-12-generic #43-Ubuntu SMP Fri May 1 19:31:32 UTC 2009 x86_64 GNU/Linux I upgraded to the 'Ubuntu Proposed' 2.6.28-12 kernel from the standard 2.6.28-11 after experiencing daily GPU lock-ups, file system errors (auto remount read-only), and similar kernel Oops. This laptop was a rock-solid experience with Intrepid 8.10 but is sadly an unstable mess since upgrading to the Jaunty kernel and Jaunty Intel video driver. Wish there was an easy way to go back to 8.10! --------------- [10292.832256] BUG: unable to handle kernel NULL pointer dereference at 0000000000000000 [10292.832269] IP: [<0000000000000000>] 0x0 [10292.832283] PGD 0 [10292.832288] Oops: 0010 [#1] SMP [10292.832294] last sysfs file: /sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq [...] ----------------- Aaron. ProblemType: Bug Architecture: amd64 DistroRelease: Ubuntu 9.04 HibernationDevice: RESUME=/dev/mapper/shim-swap MachineType: LENOVO 2776T8M Package: linux-image-2.6.28-12-generic 2.6.28-12.43 ProcCmdLine: root=/dev/mapper/hostname-root ro quiet splash ProcEnviron: PATH=(custom, user) LANG=en_AU.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 2.6.28-12.43-generic SourcePackage: linux ** Tags added: sysfs -- Kernel Oops (NULL Pointer) in 2.6.28-12 (sysfs problem?) https://bugs.launchpad.net/bugs/374359 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
