(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Tue, 14 Jul 2009 18:33:04 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13772 > > Summary: khubd bug: unable to handle kernel NULL pointer > dereference > Product: Drivers > Version: 2.5 > Kernel Version: 2.6.30 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: USB > AssignedTo: greg@xxxxxxxxx > ReportedBy: tony@xxxxxxxxxx > CC: tony@xxxxxxxxxx > Regression: No There's some additional info int he bugzilla report. It is a regression (2.6.26 was OK). I'll change the bugzilla entry to reflect this. We seem to have had several reports similar to this one recently. > > This issue occurs occasionally just removing usb drives, but can be stimulated > to occur in about 30 seconds by alternatively plugging and unplugging two usb > flash drives repeatedly (plug/unplug one drive every 2-5 seconds). Once this > error occurs, no other USB connection events are reported in dmesg or via hal. > > usb 4-1: USB disconnect, address 33 > BUG: unable to handle kernel NULL pointer dereference at 00000008 > IP: [<c02562c4>] device_del+0x8/0x124 > *pde = 00000000 > Oops: 0000 [#1] SMP > last sysfs file: > /sys/devices/pci0000:00/0000:00:1d.7/usb4/4-1/4-1:1.0/host33/target33:0:0/33:0:0:0/type > Modules linked in: usb_storage ipv6 fuse pci_hotplug mmc_block i915 drm intelfb > i2c_algo_bit acpi_cpufreq freq_table joydev pcmcia yenta_socket rsrc_nonstatic > pcmcia_core container rtc_cmos rtc_core rtc_lib video output battery > panasonic_laptop ac button processor psmouse serio_raw pcspkr iTCO_wdt > snd_intel8x0m i2c_i801 snd_intel8x0 snd_ac97_codec ac97_bus i2c_core snd_pcm > snd_timer snd intel_agp soundcore snd_page_alloc agpgart evdev ext3 jbd mbcache > dm_mirror dm_region_hash dm_log dm_snapshot dm_mod sd_mod crc_t10dif pata_acpi > ata_piix ata_generic libata sdhci_pci sdhci 8139cp mmc_core 8139too led_class > mii scsi_mod ehci_hcd uhci_hcd usbcore thermal fan > > Pid: 706, comm: khubd Not tainted (2.6.30-strike #1) CF-18KJHZXBM > EIP: 0060:[<c02562c4>] EFLAGS: 00010286 CPU: 0 > EIP is at device_del+0x8/0x124 > EAX: 00000008 EBX: 00000008 ECX: f1c558ac EDX: f854cee7 > ESI: f1c558ac EDI: 00000008 EBP: f73dbdc8 ESP: f73dbdbc > DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068 > Process khubd (pid: 706, ti=f73da000 task=f6863140 task.ti=f73da000) > Stack: > 00000000 f1c558ac 00000008 f73dbddc f854cefc f1c558ac f8552d70 f842db9c > f73dbdec f8415fa6 f1c558ac f8552d70 f73dbdfc c0257f84 f1c558ac f1c558e0 > f73dbe0c c0258036 00000000 f1c558ac f73dbe20 c02577b2 f1c558ac f1c558b4 > Call Trace: > [<f854cefc>] ? sd_remove+0x15/0x50 [sd_mod] > [<f8415fa6>] ? scsi_bus_remove+0x29/0x2f [scsi_mod] > [<c0257f84>] ? __device_release_driver+0x58/0x75 > [<c0258036>] ? device_release_driver+0x18/0x23 > [<c02577b2>] ? bus_remove_device+0x83/0x9a > [<c02563ac>] ? device_del+0xf0/0x124 > [<f84161d4>] ? __scsi_remove_device+0x34/0x62 [scsi_mod] > [<f8413eed>] ? scsi_forget_host+0x30/0x4f [scsi_mod] > [<f840e6a0>] ? scsi_remove_host+0x67/0xd3 [scsi_mod] > [<f8f0b626>] ? quiesce_and_remove_host+0x56/0x88 [usb_storage] > [<f8f0b6fe>] ? usb_stor_disconnect+0xe/0x18 [usb_storage] > [<f8064843>] ? usb_unbind_interface+0x4a/0xbb [usbcore] > [<c0257f84>] ? __device_release_driver+0x58/0x75 > [<c0258036>] ? device_release_driver+0x18/0x23 > [<c02577b2>] ? bus_remove_device+0x83/0x9a > [<c02563ac>] ? device_del+0xf0/0x124 > [<f8062483>] ? usb_disable_device+0x5c/0xba [usbcore] > [<f805e827>] ? usb_disconnect+0x73/0xda [usbcore] > [<f805f530>] ? hub_thread+0x535/0xdd1 [usbcore] > [<c0122170>] ? default_wake_function+0xb/0xd > [<c011a237>] ? __wake_up_common+0x35/0x5b > [<c0137ffb>] ? autoremove_wake_function+0x0/0x33 > [<f805effb>] ? hub_thread+0x0/0xdd1 [usbcore] > [<f805effb>] ? hub_thread+0x0/0xdd1 [usbcore] > [<c0137d04>] ? kthread+0x45/0x6b > [<c0137cbf>] ? kthread+0x0/0x6b > [<c010332f>] ? kernel_thread_helper+0x7/0x10 > Code: c0 74 19 83 c6 08 89 c3 eb 07 89 f0 e8 ef c7 f6 ff 8b 03 89 da > 83 c3 14 85 c0 75 ee 5e 5f 5b 5e 5f 5d c3 55 89 e5 57 56 53 89 c3 > <8b> 38 8b 40 44 85 c0 74 12 8b 40 38 89 d9 ba 02 00 00 00 83 c0 > EIP: [<c02562c4>] device_del+0x8/0x124 SS:ESP 0068:f73dbdbc > CR2: 0000000000000008 > ---[ end trace 671d828ecb4c19c6 ]--- > sd 33:0:0:0: [sdb] READ CAPACITY failed > sd 33:0:0:0: [sdb] Result: hostbyte=DID_NO_CONNECT driverbyte=DRIVER_OK > sd 33:0:0:0: [sdb] Sense not available. > sd 33:0:0:0: [sdb] Write Protect is off > sd 33:0:0:0: [sdb] Mode Sense: 00 00 00 00 > sd 33:0:0:0: [sdb] Assuming drive cache: write through > sd 33:0:0:0: [sdb] Attached SCSI removable disk > usb-storage: device scan complete > > I've really got to use at least the 2.6.30 kernel because of the new video card > support for Intel, so I'm really interested in testing any patches available > for this kernel or newer. Thanks in advance! > > -- > Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
