Hi Ferry, On 7/25/2021 10:57 PM, Felipe Balbi wrote: > > Hi, > > Ferry Toth <fntoth@xxxxxxxxx> writes: >>>>> 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. >>> >> I wouldn't mind but am leaving on a holiday, won't have time until 6 aug. > > not a problem, we'll still be here when you're back :-) > >> But as I am using configfs (excerpt follows) and just disabling the >> last 2 line resolves the issue, I'm guessing uac2 is the issue. Or >> exceeding the available resources. >> >> # Create directory structure >> mkdir "${GADGET_BASE_DIR}" >> cd "${GADGET_BASE_DIR}" >> mkdir -p configs/c.1/strings/0x409 >> mkdir -p strings/0x409 >> >> # Serial device >> mkdir functions/gser.usb0 >> ln -s functions/gser.usb0 configs/c.1/ >> ### >> >> # Ethernet device >> mkdir functions/eem.usb0 >> echo "${DEV_ETH_ADDR}" > functions/eem.usb0/dev_addr >> echo "${HOST_ETH_ADDR}" > functions/eem.usb0/host_addr >> ln -s functions/eem.usb0 configs/c.1/ >> >> # Mass Storage device >> mkdir functions/mass_storage.usb0 >> echo 1 > functions/mass_storage.usb0/stall >> echo 0 > functions/mass_storage.usb0/lun.0/cdrom >> echo 0 > functions/mass_storage.usb0/lun.0/ro >> echo 0 > functions/mass_storage.usb0/lun.0/nofua >> echo "${USBDISK}" > functions/mass_storage.usb0/lun.0/file >> ln -s functions/mass_storage.usb0 configs/c.1/ >> >> # UAC2 device >> mkdir functions/uac2.usb0 >> ln -s functions/uac2.usb0 configs/c.1 > > Right, either there's an actual bug in uac2, or we're running out of > FIFO space. > Are you enabling the TXFIFO flag here again? If we suspect that we're running out of FIFO space, then: - First, making sure we're explicitly enabling the TXFIFO resize flag. - Second, we should see the same warning we saw previously: dwc3 dwc3.0.auto: Fifosize(2154) > RAM size(2022) ep5in depth:115540359 Thanks Wesley Cheng -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
