Hi, I have a Line6 Pod Studio UX1 card, but each time I plug it in, I get the following crash in dmesg on Ubuntu 18.04 Linux my-pc 4.20.8-042008-generic #201902121544 SMP Tue Feb 12 20:46:50 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux I've also tested this with a Fedora 30 v5.0.6-300 kernel, but still seems to happen (using liveCD). The output on the card seems to work, but none of the inputs work. I've also now tested with latest kernel available on Arch Linux Linux my-pc 5.0.9-arch1-1-ARCH #1 SMP PREEMPT Sat Apr 20 15:00:46 UTC 2019 x86_64 GNU/Linux After some further testing, I found that this issue cropped in beween v4.8.17 and v4.9-rc1. v4.8.17 - Works fine. v4.9-rc1+ - Produces crash [ 5.114276] ------------[ cut here ]------------ [ 5.114277] transfer buffer not dma capable [ 5.114293] WARNING: CPU: 1 PID: 429 at drivers/usb/core/hcd.c:1586 usb_hcd_map_urb_for_dma+0x3eb/0x5a0 [ 5.114294] Modules linked in: snd_seq_oss(+) snd_usb_toneport(+) snd_usb_line6 videobuf2_common btusb snd_seq_midi btrtl irqbypass videodev btbcm snd_hda_codec_conexant drm_kms_helper xpad snd_seq_midi_event snd_hda_codec_generic media btintel cmdlinepart drm ff_memless bluetooth snd_hda_intel i2c_algo_bit drm_panel_orientation_quirks snd_rawmidi intel_spi_platform joydev ipmi_devintf ipmi_msghandler input_leds snd_hda_codec ecdh_generic cfg80211 cfbfillrect snd_hda_core cfbimgblt cfbcopyarea thinkpad_acpi snd_hwdep rtsx_pci_ms fb_sys_fops syscopyarea snd_seq sysfillrect sysimgblt intel_spi memstick mei_me spi_nor nvram fb snd_pcm mtd mei fbdev snd_seq_device snd_timer ie31200_edac snd soundcore mac_hid sch_fq_codel parport_pc ppdev lp sunrpc parport ip_tables x_tables autofs4 hid_generic usbhid hid rtsx_pci_sdmmc psmouse ahci i2c_core r8169 rtsx_pci libahci lpc_ich realtek wmi video [ 5.114332] CPU: 1 PID: 429 Comm: systemd-udevd Not tainted 4.20.8-042008-generic #201902121544 [ 5.114333] Hardware name: LENOVO 20C600HHZA/20C600HHZA, BIOS J9ET99WW (2.19 ) 05/05/2015 [ 5.114336] RIP: 0010:usb_hcd_map_urb_for_dma+0x3eb/0x5a0 [ 5.114337] Code: 48 01 f9 48 39 ce 73 7f 80 3d c6 03 eb 00 00 41 bd f5 ff ff ff 75 a3 48 c7 c7 00 e1 d5 8d c6 05 b0 03 eb 00 01 e8 07 32 95 ff <0f> 0b 8b 53 64 eb 89 81 4b 64 00 00 02 00 e9 40 fd ff ff 4c 8b 05 [ 5.114339] RSP: 0018:ffffacc582077788 EFLAGS: 00010282 [ 5.114340] RAX: 0000000000000000 RBX: ffff9eb0282b7c00 RCX: 0000000000000006 [ 5.114341] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff9eb02e056440 [ 5.114343] RBP: ffffacc5820777a8 R08: 0000000000000001 R09: 0000000000000361 [ 5.114344] R10: 0000000000000004 R11: 0000000000000000 R12: ffff9eb02bcde000 [ 5.114345] R13: 00000000fffffff5 R14: 0000000000600000 R15: 0000000000000200 [ 5.114347] FS: 00007fbbc4c6e8c0(0000) GS:ffff9eb02e040000(0000) knlGS:0000000000000000 [ 5.114348] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 5.114349] CR2: 000055d1c2aa6008 CR3: 000000042abf2006 CR4: 00000000001606e0 [ 5.114350] Call Trace: [ 5.114355] usb_hcd_submit_urb+0x497/0xc70 [ 5.114358] ? __switch_to_asm+0x40/0x70 [ 5.114360] ? __switch_to_asm+0x34/0x70 [ 5.114362] ? __switch_to_asm+0x40/0x70 [ 5.114364] ? __switch_to_asm+0x34/0x70 [ 5.114367] ? __switch_to+0x471/0x4e0 [ 5.114369] ? __switch_to_asm+0x34/0x70 [ 5.114371] ? usb_alloc_urb+0x1a/0x30 [ 5.114373] usb_submit_urb+0x2f2/0x5a0 [ 5.114376] usb_start_wait_urb+0x6e/0x180 [ 5.114378] usb_control_msg+0xdc/0x140 [ 5.114383] line6_read_data+0xec/0x200 [snd_usb_line6] [ 5.114386] line6_read_serial_number+0x1b/0x20 [snd_usb_line6] [ 5.114389] toneport_init+0x9a/0x220 [snd_usb_toneport] [ 5.114393] line6_probe+0x2f1/0x460 [snd_usb_line6] [ 5.114395] ? line6_toneport_disconnect+0x70/0x70 [snd_usb_toneport] [ 5.114398] toneport_probe+0x35/0x40 [snd_usb_toneport] [ 5.114401] usb_probe_interface+0xf1/0x300 [ 5.114405] really_probe+0xfe/0x3b0 [ 5.114407] driver_probe_device+0xba/0x100 [ 5.114409] __driver_attach+0xe4/0x110 [ 5.114411] ? driver_probe_device+0x100/0x100 [ 5.114413] bus_for_each_dev+0x79/0xc0 [ 5.114417] ? kmem_cache_alloc_trace+0x15e/0x1e0 [ 5.114419] driver_attach+0x1e/0x20 [ 5.114422] bus_add_driver+0x159/0x230 [ 5.114424] driver_register+0x70/0xc0 [ 5.114426] usb_register_driver+0x7f/0x140 [ 5.114428] ? 0xffffffffc02f1000 [ 5.114431] toneport_driver_init+0x23/0x1000 [snd_usb_toneport] [ 5.114434] do_one_initcall+0x4a/0x1c4 [ 5.114436] ? _cond_resched+0x19/0x30 [ 5.114438] ? kmem_cache_alloc_trace+0x15e/0x1e0 [ 5.114441] do_init_module+0x60/0x220 [ 5.114444] load_module+0x16bb/0x1920 [ 5.114447] __do_sys_finit_module+0xbd/0x120 [ 5.114449] ? __do_sys_finit_module+0xbd/0x120 [ 5.114452] __x64_sys_finit_module+0x1a/0x20 [ 5.114454] do_syscall_64+0x5a/0x110 [ 5.114456] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 5.114458] RIP: 0033:0x7fbbc56f3219 [ 5.114460] Code: 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 47 fc 0c 00 f7 d8 64 89 01 48 [ 5.114461] RSP: 002b:00007ffcd2692b38 EFLAGS: 00000246 ORIG_RAX: 0000000000000139 [ 5.114463] RAX: ffffffffffffffda RBX: 000055b7b7649160 RCX: 00007fbbc56f3219 [ 5.114464] RDX: 0000000000000000 RSI: 00007fbbc55d7cad RDI: 000000000000000f [ 5.114465] RBP: 00007fbbc55d7cad R08: 0000000000000000 R09: 0000000000000000 [ 5.114466] R10: 000000000000000f R11: 0000000000000246 R12: 0000000000000000 [ 5.114467] R13: 000055b7b7625220 R14: 0000000000020000 R15: 000055b7b7649160 [ 5.114470] ---[ end trace 4f385244c87aeb99 ]--- [ 5.114474] snd_usb_toneport 1-6:1.0: receive length failed (error -11) [ 5.114779] snd_usb_toneport 1-6:1.0: read request failed (error -32) [ 5.114783] snd_usb_toneport 1-6:1.0: write request failed (error -11) [ 5.115836] snd_usb_toneport 1-6:1.0: Line 6 POD Studio UX1 now attached [ 5.115876] usbcore: registered new interface driver snd_usb_toneport Kind Regards, Christo Gouws
