Hi, Ferry Toth <fntoth@xxxxxxxxx> writes: > Hi > > Op 25-07-2021 om 08:05 schreef Felipe Balbi: >> Hi, >> >> Ferry Toth <fntoth@xxxxxxxxx> writes: >>>>>>> Hardware name: Intel Corporation Merrifield/BODEGA BAY, BIOS 542 >>>>>>> 2015.01.21:18.19.48 >>>>>>> RIP: 0010:0x500000000 >>>>>>> Code: Unable to access opcode bytes at RIP 0x4ffffffd6. >>>>>>> RSP: 0018:ffffa4d00045fc28 EFLAGS: 00010046 >>>>>>> RAX: 0000000500000000 RBX: ffff8cd546aed200 RCX: 0000000000000000 >>>>>>> RDX: 0000000000000000 RSI: ffff8cd547bfcae0 RDI: ffff8cd546aed200 >>>>>>> RBP: ffff8cd547bfcae0 R08: 0000000000000000 R09: 0000000000000001 >>>>>>> R10: ffff8cd541fd28c0 R11: 0000000000000000 R12: ffff8cd547342828 >>>>>>> R13: ffff8cd546aed248 R14: 0000000000000000 R15: ffff8cd548b1d000 >>>>>>> FS: 0000000000000000(0000) GS:ffff8cd57e200000(0000) knlGS:0000000000000000 >>>>>>> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 >>>>>>> CR2: 0000000500000000 CR3: 000000000311e000 CR4: 00000000001006f0 >>>>>>> Call Trace: >>>>>>> ? dwc3_remove_requests.constprop.0+0x14d/0x170 >>>>>>> ? __dwc3_gadget_ep_disable+0x7a/0x160 >>>>>>> ? dwc3_gadget_ep_disable+0x3d/0xd0 >>>>>>> ? usb_ep_disable+0x1c/0x >>>>>>> ? u_audio_stop_capture+0x79/0x120 [u_audio] >>>>>>> ? afunc_set_alt+0x73/0x80 [usb_f_uac2] So this is triggered by a SetInterface request... >>>>>>> ? composite_setup+0x224/0x1b90 [libcomposite] >>>>>>> ? __dwc3_gadget_kick_transfer+0x160/0x400 >>>>>>> ? dwc3_gadget_ep_queue+0xf3/0x1a0 >>>>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite] >>>>>>> ? configfs_composite_setup+0x6b/0x90 [libcomposite] >>>>>>> ? dwc3_ep0_interrupt+0x459/0xa40 >>>>>>> ? dwc3_thread_interrupt+0x8ee/0xf40 >>>>>>> ? __schedule+0x235/0x6c0 >>>>>>> ? disable_irq_nosync+0x10/0x10 >>>>>>> ? irq_thread_fn+0x1b/0x60 >>>>>>> ? irq_thread+0xc0/0x160 >>>>>>> ? irq_thread_check_affinity+0x70/0x70 >>>>>>> ? irq_forced_thread_fn+0x70/0x70 >>>>>>> ? kthread+0x122/0x140 >>>>>>> ? set_kthread_struct+0x40/0x40 >>>>>>> ? ret_from_fork+0x22/0x30 >>>>>> Do you mind enabling dwc3 traces and collecting them? Trying to figure >>>>>> out how we got here. >>>>>> >>>>> I'll try if I can get the same error by booting with USB in host mode >>>>> and then switch to device mode. If so I can enable traces and collect as >>>>> you explained me before. >>>>> >>>>> I'll try before monday, as then I fly for a holiday and will not be >>>>> available before rc5. >>>> you can enable all of those with kernel cmdline :-) >>>> >>>> https://www.kernel.org/doc/html/latest/admin-guide/kernel-parameters.html >>>> >>>> you need ftrace_dump_on_oops=1 and also need the correct options on >>>> trace_buf_size and trace_event. >>>> >>> On Edison-Arduino I have a switch to go to device mode, after which >>> udev triggers a script configure gadgets through configfs. >>> >>> I tried to log following these instructions: >>> >>> https://www.kernel.org/doc/html/latest/driver-api/usb/dwc3.html#reporting-bugs <https://www.kernel.org/doc/html/latest/driver-api/usb/dwc3.html#reporting-bugs> >>> >>> Unfortunately the kernel crashes so badly I can not get to the ` cp >>> /t/trace /root/trace.txt` line (after a while the watchdog kicks). >>> >>> What to do next? >> Pass ftrace_dump_on_oops to kernel cmdline. >> > No sure if I did this right, on oops everything is pushed to console > (115k2 serial), I hope nothing essential is lost. > > I copied the screen buffer to file see attached. Thank you, I bet it took quite a some time :-) Anyway, looking at the logs around Set Interface requests, we can track every endpoint that's disabled. I'll take a guess and assume we're failing at the last Set Interface, that means we should have something odd with ep6in, but everything looks fine in the trace output: [ 75.823107] irq/14-d-596 0d... 42789194us : dwc3_gadget_ep_enable: ep6in: mps 192/346 streams 16 burst 0 ring 0/0 flags E:swbp:< [ 75.835472] irq/14-d-596 0d... 42789198us : dwc3_alloc_request: ep6in: req 0000000002c71409 length 0/0 zsI ==> 0 [ 75.846416] irq/14-d-596 0d... 42789202us : dwc3_ep_queue: ep6in: req 0000000002c71409 length 0/192 zsI ==> -115 [ 75.857360] irq/14-d-596 0d... 42789204us : dwc3_alloc_request: ep6in: req 00000000a324f5d0 length 0/0 zsI ==> 0 [ 75.868301] irq/14-d-596 0d... 42789206us : dwc3_ep_queue: ep6in: req 00000000a324f5d0 length 0/192 zsI ==> -115 [ 75.879244] irq/14-d-596 0d... 42789209us : dwc3_event: event (000020c2): ep0in: Transfer Not Ready [0] (Not Active) [Status Phase] [ 75.891880] irq/14-d-596 0d... 42789211us : dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 0 ctrl 00000c33 (HLcs:SC:status2) [ 75.989131] irq/14-d-596 0d... 42789224us : dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful [ 76.096261] irq/14-d-596 0d... 42789272us : dwc3_event: event (0000c042): ep0in: Transfer Complete (sIL) [Status Phase] [ 76.107834] irq/14-d-596 0d... 42789275us : dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 0 ctrl 00000c32 (hLcs:SC:status2) [ 76.122944] irq/14-d-596 0d... 42789277us : dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 0/0 zsI ==> 0 [ 76.134160] irq/14-d-596 0d... 42789280us : dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 8 ctrl 00000c23 (HLcs:SC:setup) [ 76.231322] irq/14-d-596 0d... 42789292us : dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful [ 76.297418] kworker/-23 0d... 42789670us : dwc3_ep_queue: ep3in: req 0000000029586135 length 0/96 ZsI ==> -115 [ 76.308278] kworker/-23 0d... 42789695us : dwc3_prepare_trb: ep3in: trb 00000000b81213d6 (E1:D0) buf 0000000003b7a800 size 96 ctrl 00000811 (Hlcs:sC:normal) [ 76.395294] kworker/-23 0d... 42789707us : dwc3_gadget_ep_cmd: ep3in: cmd 'Update Transfer' [60007] params 00000000 00000000 00000000 --> status: Successful [ 76.471900] irq/14-d-596 0d... 42789842us : dwc3_event: event (0000c040): ep0out: Transfer Complete (sIL) [Setup Phase] [ 76.489308] irq/14-d-596 0d... 42789845us : dwc3_ctrl_req: Set Interface(Intf = 5, Alt.Setting = 0) [ 76.505650] irq/14-d-596 0d... 42789851us : dwc3_ep_dequeue: ep6in: req 0000000002c71409 length 0/192 zsI ==> -115 [ 76.523315] irq/14-d-596 0d... 42789854us : dwc3_gadget_giveback: ep6in: req 0000000002c71409 length 0/192 zsI ==> -104 [ 76.541427] irq/14-d-596 0d... 42789857us : dwc3_free_request: ep6in: req 0000000002c71409 length 0/192 zsI ==> -104 [ 76.559267] irq/14-d-596 0d... 42789859us : dwc3_ep_dequeue: ep6in: req 00000000a324f5d0 length 0/192 zsI ==> -115 [ 76.576937] irq/14-d-596 0d... 42789861us : dwc3_gadget_giveback: ep6in: req 00000000a324f5d0 length 0/192 zsI ==> -104 [ 76.595046] irq/14-d-596 0d... 42789862us : dwc3_free_request: ep6in: req 00000000a324f5d0 length 0/192 zsI ==> -104 [ 76.612892] irq/14-d-596 0d... 42789865us : dwc3_gadget_ep_disable: ep6in: mps 192/346 streams 16 burst 0 ring 0/0 flags E:swbp:< [ 76.665535] irq/14-d-596 0d... 42789873us : dwc3_event: event (000020c2): ep0in: Transfer Not Ready [0] (Not Active) [Status Phase] [ 76.684716] irq/14-d-596 0d... 42789875us : dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 0 ctrl 00000c33 (HLcs:SC:status2) [ 76.819195] irq/14-d-596 0d... 42789886us : dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful [ 76.926324] irq/14-d-596 0d... 42789930us : dwc3_event: event (0000c042): ep0in: Transfer Complete (sIL) [Status Phase] [ 76.937892] irq/14-d-596 0d... 42789933us : dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 0 ctrl 00000c32 (hLcs:SC:status2) [ 76.953003] irq/14-d-596 0d... 42789935us : dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 0/0 zsI ==> 0 [ 76.964217] irq/14-d-596 0d... 42789938us : dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 8 ctrl 00000c23 (HLcs:SC:setup) [ 77.061379] irq/14-d-596 0d... 42789950us : dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful [ 77.168595] irq/14-d-596 0d... 42790509us : dwc3_event: event (0000c040): ep0out: Transfer Complete (sIL) [Setup Phase] [ 77.180159] irq/14-d-596 0d... 42790512us : dwc3_ctrl_req: Get String Descriptor(Index = 18, Length = 255) [ 77.190578] irq/14-d-596 0d... 42790537us : dwc3_prepare_trb: ep0in: trb 000000004c0ae319 (E0:D0) buf 0000000003b68000 size 36 ctrl 00000c53 (HLcs:SC:data) [ 77.287648] irq/14-d-596 0d... 42790550us : dwc3_gadget_ep_cmd: ep0in: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful [ 77.333107] irq/14-d-596 0d... 42790557us : dwc3_event: event (000010c2): ep0in: Transfer Not Ready [0] (Not Active) [Data Phase] [ 77.407223] irq/14-d-596 0d... 42790575us : dwc3_event: event (000090c2): ep0in: Transfer Not Ready [0] (Active) [Data Phase] [ 77.480985] irq/14-d-596 0d... 42790588us : dwc3_event: event (0000c042): ep0in: Transfer Complete (sIL) [Data Phase] [ 77.492376] irq/14-d-596 0d... 42790590us : dwc3_complete_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 0000000003b68000 size 0 ctrl 00000c52 (hLcs:SC:data) [ 77.507221] irq/14-d-596 0d... 42790595us : dwc3_gadget_giveback: ep0out: req 00000000cb1bd3cd length 36/36 ZsI ==> 0 [ 77.518609] irq/14-d-596 0d... 42790597us : dwc3_event: event (000020c0): ep0out: Transfer Not Ready [0] (Not Active) [Status Phase] [ 77.531332] irq/14-d-596 0d... 42790598us : dwc3_prepare_trb: ep0out: trb 000000004c0ae319 (E0:D0) buf 000000001bded000 size 0 ctrl 00000c43 (HLcs:SC:status3) [ 77.628669] irq/14-d-596 0d... 42790609us : dwc3_gadget_ep_cmd: ep0out: cmd 'Start Transfer' [406] params 00000000 1bded000 00000000 --> status: Successful Do you mind adding a few prints in dwc3_remove_requests to tell us which endpoint is being processed? Then we'll know for sure which one caused the crash. -- balbi
