A customer using a device with USBDEVFS is reporting following backtrace (it seems to be a rather generic issue related to linux usb 3.0 in general): According to him this problem is reproducible as soon as he starts the data transfer, is there anything known about that? He is using 3.12.0-031200-generic Dec 24 14:22:39 homenas kernel: [ 1469.818460] xhci_hcd 0000:0f:00.0: ERROR Transfer event TRB DMA ptr not part of current TD Dec 24 14:30:39 homenas kernel: [ 1469.822450] xhci_hcd 0000:0f:00.0: ERROR Transfer event TRB DMA ptr not part of current TD Dec 24 14:30:39 homenas kernel: last message repeated 16 times Dec 24 14:30:39 homenas kernel: [ 1469.822450] xhci_hcd 0000:0f:00.0: WARN Successful completion on short TX Dec 24 14:30:39 homenas kernel: [ 1469.822450] xhci_hcd 0000:0f:00.0: WARN Successful completion on short TX Dec 24 14:30:39 homenas kernel: [ 1469.822450] xhci_hcd 0000:0f:00.0: URB transfer length is wrong, xHC issue? req. len = 46080, act. len = 1382400 Dec 24 14:30:39 homenas kernel: [ 1469.822450] BUG: unable to handle kernel NULL pointer dereference at 0000000000000004 Dec 24 14:30:39 homenas kernel: [ 1469.822450] IP: [] finish_td+0x13f/0x250 Dec 24 14:30:39 homenas kernel: [ 1469.822450] PGD 0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] Oops: 0000 [#1] SMP Dec 24 14:30:39 homenas kernel: [ 1469.822450] Modules linked in: videodev pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) dm_crypt snd_hda_codec_ca0132 snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi dm_multipath psmouse scsi_dh snd_rawmidi serio_raw sb_edac snd_seq_midi_event edac_core snd_seq snd_timer snd_seq_device lpc_ich snd bnep rfcomm soundcore snd_page_alloc bluetooth mei_me mei mac_hid ppdev nfsd w83627ehf hwmon_vid nfs_acl auth_rpcgss coretemp nfs fscache lockd lp parport sunrpc raid10 raid456 async_pq async_xor async_memcpy async_raid6_recov async_tx raid0 multipath linear btrfs raid6_pq xor libcrc32c osst st raid1 tg3 mptsas firewire_ohci ptp mxm_wmi firewire_core ahci mptscsih pps_core crc_itu_t libahci mpt2sas mptbase wmi scsi_transport_sas raid_class [last unloaded: vmnet] Dec 24 14:30:39 homenas kernel: [ 1469.822450] CPU: 0 PID: 0 Comm: swapper/0 Tainted: GF O 3.12.0-031200-generic #201311031935 Dec 24 14:30:39 homenas kernel: [ 1469.822450] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./X79 Extreme9, BIOS P3.30 01/28/2013 Dec 24 14:30:39 homenas kernel: [ 1469.822450] task: ffffffff81c144a0 ti: ffffffff81c00000 task.ti: ffffffff81c00000 Dec 24 14:30:39 homenas kernel: [ 1469.822450] RIP: 0010:[] [] finish_td+0x13f/0x250 Dec 24 14:30:39 homenas kernel: [ 1469.822450] RSP: 0018:ffff88102fc03ca8 EFLAGS: 00010046 Dec 24 14:30:39 homenas kernel: [ 1469.822450] RAX: ffff880f865d2b10 RBX: ffff880f865d2b00 RCX: 0000000000000006 Dec 24 14:30:39 homenas kernel: [ 1469.822450] RDX: ffff880f865d2b10 RSI: 0000000000000007 RDI: 0000000000000046 Dec 24 14:30:39 homenas kernel: [ 1469.822450] RBP: ffff88102fc03d08 R08: 000000000000000a R09: 0000000000000000 Dec 24 14:30:39 homenas kernel: [ 1469.822450] R10: 00000000000006fd R11: 00000000000006fc R12: ffff880fd2de0000 Dec 24 14:30:39 homenas kernel: [ 1469.822450] R13: ffff880fd32b1780 R14: 0000000000000000 R15: ffff880fd5c5f000 Dec 24 14:30:39 homenas kernel: [ 1469.822450] FS: 0000000000000000(0000) GS:ffff88102fc00000(0000) knlGS:0000000000000000 Dec 24 14:30:39 homenas kernel: [ 1469.822450] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Dec 24 14:30:39 homenas kernel: [ 1469.822450] CR2: 0000000000000004 CR3: 0000000001c0d000 CR4: 00000000000407f0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] Stack: Dec 24 14:30:39 homenas kernel: [ 1469.822450] ffff88102fc03ce8 ffff880fd0bc8000 ffff88102fc03d00 ffff880fd268d1a0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] ffff88102fc03df4 0000000100000002 ffff880fd32b1780 ffff880f865d2b00 Dec 24 14:30:39 homenas kernel: [ 1469.822450] ffff880fd268d1a0 ffff880fd5c5f000 ffff880fd2de0000 ffff880fd2c497b0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] Call Trace: Dec 24 14:30:39 homenas kernel: [ 1469.822450] Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] process_bulk_intr_td+0x116/0x2d0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] handle_tx_event+0x656/0xb50 Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] ? __queue_work+0x3b0/0x3c0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] ? call_timer_fn+0x46/0x160 Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] xhci_handle_event+0x1db/0x2a0 Dec 24 14:30:39 homenas kernel: [ 1469.822450] [] ? run_timer_softirq+0x1b2/0x300 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] xhci_irq+0x120/0x1f0 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] xhci_msi_irq+0x11/0x20 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] handle_irq_event_percpu+0x5d/0x210 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] handle_irq_event+0x48/0x70 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] ? native_apic_msr_eoi_write+0x14/0x20 Dec 24 14:30:39 homenas kernel: [ 1470.312076] [] handle_edge_irq+0x77/0x110 -- 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
