(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Sat, 15 Aug 2009 10:44:40 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13988 > > Summary: Oops and NULL pointer with USB disk > Product: IO/Storage > Version: 2.5 > Kernel Version: 2.6.30.4 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Serial ATA > AssignedTo: jgarzik@xxxxxxxxx > ReportedBy: subcon@xxxxxxx > Regression: No > Something for everyone here! > Connected an IDE disk to an USB adapter and got lots of the following messages: > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > > Eventually it times out and gives a call trace. (dmesg below) > When I unplugged the disk I got a NULL pointer dereference. (also in dmesg > below) > > I am running Arch Linux with stock kernel. Kernel config can be found here: > http://repos.archlinux.org/viewvc.cgi/kernel26/repos/core-x86_64/ > > PS: This disk might be broken. > > > Initializing USB Mass Storage driver... > scsi8 : SCSI emulation for USB Mass Storage devices > usbcore: registered new interface driver usb-storage > USB Mass Storage support registered. > usb-storage: device found at 2 > usb-storage: waiting for device to settle before scanning > scsi 8:0:0:0: Direct-Access SAMSUNG SP0411N 0-11 PQ: 0 ANSI: 2 > CCS > sd 8:0:0:0: Attached scsi generic sg2 type 0 > sd 8:0:0:0: [sdb] 78242976 512-byte hardware sectors: (40.0 GB/37.3 GiB) > sd 8:0:0:0: [sdb] Write Protect is off > sd 8:0:0:0: [sdb] Mode Sense: 00 38 00 00 > sd 8:0:0:0: [sdb] Assuming drive cache: write through > sd 8:0:0:0: [sdb] Assuming drive cache: write through > sdb:<6>sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > usb-storage: device scan complete > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > INFO: task async/0:3992 blocked for more than 120 seconds. > "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > async/0 D ffff8801353bb8d0 0 3992 2 > ffff8801353bb8d0 0000000000000046 ffff880124f2cf00 0000000088d0e6cd > ffff880124dfd000 ffff880137c0f7f0 ffff8801353bbb70 00000000000111c0 > 000000000000cb68 ffff8801353bbb70 ffff8801282b2730 0000000088d0e6cd > Call Trace: > [<ffffffff802bf790>] ? sync_page+0x0/0x80 > [<ffffffff8054e529>] ? schedule+0x29/0x70 > [<ffffffff8054e5dd>] ? io_schedule+0x6d/0xd0 > [<ffffffff802bf7dd>] ? sync_page+0x4d/0x80 > [<ffffffff8054ec3a>] ? __wait_on_bit_lock+0x5a/0xc0 > [<ffffffff80330a30>] ? blkdev_readpage+0x0/0x40 > [<ffffffff802bf72c>] ? __lock_page+0x6c/0x90 > [<ffffffff8026c880>] ? wake_bit_function+0x0/0x70 > [<ffffffff802bff5c>] ? read_cache_page_async+0x19c/0x1b0 > [<ffffffff803bd444>] ? string+0x64/0x130 > [<ffffffff802bff89>] ? read_cache_page+0x19/0x80 > [<ffffffff8036575a>] ? read_dev_sector+0x3a/0xc0 > [<ffffffff8036a037>] ? read_lba+0xa7/0xe0 > [<ffffffff8036a411>] ? efi_partition+0xe1/0x8b0 > [<ffffffff8054d50b>] ? printk+0x50/0x6d > [<ffffffff8036679a>] ? rescan_partitions+0x1ca/0x3f0 > [<ffffffff803312c2>] ? __blkdev_get+0x1a2/0x3c0 > [<ffffffff80365955>] ? register_disk+0x175/0x1a0 > [<ffffffff803a6ac2>] ? blk_register_region+0x32/0x50 > [<ffffffff803a6d24>] ? add_disk+0x94/0x170 > [<ffffffffa0168021>] ? sd_probe_async+0x1b1/0x320 [sd_mod] > [<ffffffff80275042>] ? async_thread+0x112/0x280 > [<ffffffff802495c0>] ? default_wake_function+0x0/0x40 > [<ffffffff80274f30>] ? async_thread+0x0/0x280 > [<ffffffff8026c204>] ? kthread+0x64/0xc0 > [<ffffffff8024af20>] ? schedule_tail+0x30/0x80 > [<ffffffff8020d4fa>] ? child_rip+0xa/0x20 > [<ffffffff8026c1a0>] ? kthread+0x0/0xc0 > [<ffffffff8020d4f0>] ? child_rip+0x0/0x20 We seem to be spending vast amounts of time retrying reads agains a dud device. > ... > > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > sd 8:0:0:0: [sdb] Sense Key : 0x0 [current] > sd 8:0:0:0: [sdb] ASC=0x0 ASCQ=0x0 > usb 2-3: USB disconnect, address 2 > sd 8:0:0:0: [sdb] Unhandled error code > sd 8:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00 > end_request: I/O error, dev sdb, sector 0 > Buffer I/O error on device sdb, logical block 0 > scsi 8:0:0:0: [sdb] Unhandled error code > scsi 8:0:0:0: [sdb] Result: hostbyte=0x07 driverbyte=0x00 > end_request: I/O error, dev sdb, sector 0 > Buffer I/O error on device sdb, logical block 0 > ldm_validate_partition_table(): Disk read failed. > unable to read partition table Eventually we get the IO error. > BUG: unable to handle kernel NULL pointer dereference at 0000000000000010 > IP: [<ffffffff803a7158>] disk_part_iter_next+0x138/0x160 > PGD bd713067 PUD bd6c2067 PMD 0 > Oops: 0000 [#1] PREEMPT SMP > last sysfs file: > /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-3/2-3:1.0/host8/target8:0:0/8:0:0:0/bsg/8:0:0:0/dev > CPU 1 > Modules linked in: usb_storage usbhid hid usblp uvcvideo videodev v4l1_compat > v4l2_compat_ioctl32 snd_usb_audio snd_usb_lib snd_rawmidi > snd_hda_codec_intelhdmi snd_hda_codec_idt snd_seq_dummy fan snd_seq_oss > snd_seq_midi_event snd_seq snd_seq_device battery ac snd_hda_intel > snd_hda_codec snd_hwdep snd_pcm snd_timer uhci_hcd cpufreq_ondemand snd > soundcore snd_page_alloc ehci_hcd usbcore acpi_cpufreq sg e1000e heci(C) > psmouse thermal button iTCO_wdt iTCO_vendor_support serio_raw i2c_i801 evdev > freq_table processor coretemp rtc_cmos rtc_core rtc_lib dm_mod sd_mod sr_mod > cdrom pata_acpi ata_generic ata_piix ahci libata scsi_mod reiserfs i915 > i2c_algo_bit video output drm i2c_core intel_agp > Pid: 3992, comm: async/0 Tainted: G C 2.6.30-ARCH #1 > RIP: 0010:[<ffffffff803a7158>] [<ffffffff803a7158>] > disk_part_iter_next+0x138/0x160 > RSP: 0000:ffff880124f19dc0 EFLAGS: 00010246 > RAX: ffff880124dffc00 RBX: ffff880124f19df0 RCX: 0000000000000000 > RDX: 0000000000000000 RSI: ffff880124dffc00 RDI: 0000000000000000 > RBP: ffff88013b588a80 R08: 0000000000000000 R09: ffffffff805f9bf5 > R10: 0000000000000000 R11: 0000000000000000 R12: ffff880124dffc58 > R13: 0000000000000000 R14: ffff880124dfd120 R15: ffff88012345fc10 > FS: 0000000000000000(0000) GS:ffff88002803b000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > CR2: 0000000000000010 CR3: 00000000bd7a8000 CR4: 00000000000406e0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 > Process async/0 (pid: 3992, threadinfo ffff880124f18000, task ffff8801353bb8d0) > Stack: > ffff88013b588a80 0000000088d0e6cd ffff880124dffc00 ffff88013b588a80 > ffff880124dffc58 ffffffff803658e3 ffff880124dffc00 0000000000000000 > 0000000000000001 0000000088d0e6cd ffff880124dffc00 ffff880124dffc00 > Call Trace: > [<ffffffff803658e3>] ? register_disk+0x103/0x1a0 > [<ffffffff803a6d24>] ? add_disk+0x94/0x170 > [<ffffffffa0168021>] ? sd_probe_async+0x1b1/0x320 [sd_mod] > [<ffffffff80275042>] ? async_thread+0x112/0x280 > [<ffffffff802495c0>] ? default_wake_function+0x0/0x40 > [<ffffffff80274f30>] ? async_thread+0x0/0x280 > [<ffffffff8026c204>] ? kthread+0x64/0xc0 > [<ffffffff8024af20>] ? schedule_tail+0x30/0x80 > [<ffffffff8020d4fa>] ? child_rip+0xa/0x20 > [<ffffffff8026c1a0>] ? kthread+0x0/0xc0 > [<ffffffff8020d4f0>] ? child_rip+0x0/0x20 > Code: 38 48 83 c4 10 5b 5d 41 5c c3 66 0f 1f 84 00 00 00 00 00 48 8d 7d 10 e8 > 17 82 0b 00 48 89 6b 08 44 01 63 10 eb a5 0f 1f 44 00 00 <8b> 77 10 41 bc 01 00 > 00 00 e9 2b ff ff ff e8 45 7e ea ff e8 a0 > RIP [<ffffffff803a7158>] disk_part_iter_next+0x138/0x160 > RSP <ffff880124f19dc0> > CR2: 0000000000000010 And disk_part_iter_next() goes splat. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
