On Sun, Feb 18, 2018 at 05:31:44PM +0100, Heinrich Rebehn wrote:
> >Synopsis: Kernel panic when writing to /dev/audio
> >Category: Kernel
> >Environment:
> System : OpenBSD 6.2
> Details : OpenBSD 6.2-current (GENERIC) #1: Sun Feb 18 16:46:14
> CET 2018
>
> [email protected]:/usr/src/sys/arch/arm64/compile/GENERIC
>
> Architecture: OpenBSD.arm64
> Machine : arm64
> >Description:
> Kernel panic when writing to /dev/audio (USB audio)
> >How-To-Repeat:
> cd /dev; cat urandom > audio, or use sox' play(1) command to play any
> mp3 audio
> >Fix:
> None, i am not familiar with kernel debugging/fixing
>
Hi,
looks like you know how to compile kernels,
i'm curious if the simple diff below 'fixes' it.
-Artturi
diff --git sys/dev/usb/dwc2/dwc2.c sys/dev/usb/dwc2/dwc2.c
index 1c0ccba0e25..29c0ca1316d 100644
--- sys/dev/usb/dwc2/dwc2.c
+++ sys/dev/usb/dwc2/dwc2.c
@@ -1298,7 +1298,7 @@ dwc2_device_start(struct usbd_xfer *xfer)
xfer->actlen = 0;
KASSERT(xfertype != UE_ISOCHRONOUS ||
- xfer->nframes < DWC2_MAXISOCPACKETS);
+ xfer->nframes <= DWC2_MAXISOCPACKETS);
KASSERTMSG(xfer->nframes == 0 || xfertype == UE_ISOCHRONOUS,
"nframes %d xfertype %d\n", xfer->nframes, xfertype);
> SENDBUG: dmesg, pcidump, acpidump and usbdevs are attached.
> SENDBUG: Feel free to delete or use the -D flag if they contain sensitive
> information.
>
> dmesg:
> OpenBSD 6.2-current (GENERIC) #1: Sun Feb 18 16:46:14 CET 2018
> [email protected]:/usr/src/sys/arch/arm64/compile/GENERIC
> real mem = 964767744 (920MB)
> avail mem = 908701696 (866MB)
> mainbus0 at root: Raspberry Pi 3 Model B Rev 1.2
> cpu0 at mainbus0 mpidr 0: ARM Cortex-A53 r0p4
> efi0 at mainbus0: UEFI 2.0.5
> efi0: Das U-boot rev 0x0
> simplefb0 at mainbus0: 656x416
> wsdisplay0 at simplefb0 mux 1
> wsdisplay0: screen 0-5 added (std, vt100 emulation)
> simplebus0 at mainbus0: "soc"
> syscon0 at simplebus0: "syscon"
> bcmintc0 at simplebus0
> bcmdog0 at simplebus0
> pluart0 at simplebus0
> bcmaux0 at simplebus0
> com0 at simplebus0: ns16550, no working fifo
> com0: console
> dwctwo0 at simplebus0
> agtimer0 at simplebus0: tick rate 19200 KHz
> simplebus1 at mainbus0: "clocks"
> usb0 at dwctwo0: USB revision 2.0
> uhub0 at usb0 configuration 1 interface 0 "Broadcom DWC2 root hub" rev
> 2.00/1.00 addr 1
> uhub1 at uhub0 port 1 configuration 1 interface 0 "Standard Microsystems
> product 0x9514" rev 2.00/2.00 addr 2
> smsc0 at uhub1 port 1 configuration 1 interface 0 "Standard Microsystems
> SMSC9512/14" rev 2.00/2.00 addr 3
> smsc0: address b8:27:eb:8d:8e:a8
> ukphy0 at smsc0 phy 1: Generic IEEE 802.3u media interface, rev. 3: OUI
> 0x0001f0, model 0x000c
> uaudio0 at uhub1 port 3 configuration 1 interface 0 "ABC C-Media USB Audio
> Device" rev 1.10/1.00 addr 4
> uaudio0: audio rev 1.00, 8 mixer controls
> audio0 at uaudio0
> uhidev0 at uhub1 port 3 configuration 1 interface 3 "ABC C-Media USB Audio
> Device" rev 1.10/1.00 addr 4
> uhidev0: iclass 3/0
> uhid0 at uhidev0: input=4, output=4, feature=0
> umass0 at uhub1 port 4 configuration 1 interface 0 "JetFlash Mass Storage
> Device" rev 2.10/11.00 addr 5
> umass0: using SCSI over Bulk-Only
> scsibus0 at umass0: 2 targets, initiator 0
> sd0 at scsibus0 targ 1 lun 0: <JetFlash, Transcend 16GB, 1100> SCSI4 0/direct
> removable serial.856410005Y2I6Q9SV6N0
> sd0: 15064MB, 512 bytes/sector, 30851072 sectors
> vscsi0 at root
> scsibus1 at vscsi0: 256 targets
> softraid0 at root
> scsibus2 at softraid0: 256 targets
> bootfile: sd0a:/bsd
> boot device: sd0
> root on sd0a (24d0157b87573f8c.a) swap on sd0b dump on sd0b
> WARNING: / was not properly unmounted
> WARNING: CHECK AND RESET THE DATE!
>
> usbdevs:
> Controller /dev/usb0:
> addr 1: high speed, self powered, config 1, DWC2 root hub(0x0000),
> Broadcom(0x0000), rev 1.00
> port 1 addr 2: high speed, self powered, config 1, product 0x9514(0x9514),
> Standard Microsystems(0x0424), rev 2.00
> port 1 addr 3: high speed, self powered, config 1, SMSC9512/14(0xec00),
> Standard Microsystems(0x0424), rev 2.00
> port 2 powered
> port 3 addr 4: full speed, power 100 mA, config 1, C-Media USB Audio
> Device(0x0008), ABC(0x0d8c), rev 1.00
> port 4 addr 5: high speed, power 300 mA, config 1, Mass Storage
> Device(0x1000), JetFlash(0x8564), rev 11.00, iSerialNumber 01TC5Y2I6Q9SV6N0
> port 5 powered
>
> pcidump:
>
> acpidump:
>
>
> login: panic: kernel diagnostic assertion "xfertype != UE_ISOCHRONOUS ||
> xfer->nframes < DWC2_MAXISOCP1
> Stopped at panic+0x154: TID PID UID PRFLAGS PFLAGS
> C
> PU COMMAND
> *419441 22975 0 0x100003 0 0 cat
> db_enter() at panic+0x150
> panic() at dwc2_device_start+0x448
> dwc2_device_start() at usbd_transfer+0x144
> usbd_transfer() at uaudio_trigger_output+0x120
> uaudio_trigger_output() at audio_start_do+0x94
> audio_start_do() at audio_write+0x1d4
> audio_write() at audiowrite+0x5c
> https://www.openbsd.org/ddb.html describes the minimum info required in bug
> reports. Insufficient info makes it difficult to find and fix bugs.
> ddb> ps
> PID TID PPID UID S FLAGS WAIT COMMAND
> *22975 419441 5689 0 7 0x100003 cat
> 5689 467652 35953 0 3 0x83 wait bash
> 35953 389800 76291 0 3 0x92 select sshd
> 55493 253406 1 0 3 0x100083 ttyin getty
> 97168 494148 1 0 3 0x100098 poll cron
> 10255 431749 1 110 3 0x100090 poll sndiod
> 79222 108616 1 99 3 0x100090 poll sndiod
> 61309 292664 59971 95 3 0x100092 kqread smtpd
> 55188 161108 59971 103 3 0x100092 kqread smtpd
> 3057 518445 59971 95 3 0x100092 kqread smtpd
> 96047 27174 59971 95 3 0x100092 kqread smtpd
> 62496 434645 59971 95 3 0x100092 kqread smtpd
> 86341 293036 59971 95 3 0x100092 kqread smtpd
> 59971 218445 1 0 3 0x100080 kqread smtpd
> 76291 269291 1 0 3 0x80 select sshd
> 43366 347618 1 0 3 0x100080 poll ntpd
> 53308 487670 18663 83 3 0x100092 poll ntpd
> 18663 139799 1 83 3 0x100092 poll ntpd
> 46385 231748 81846 74 3 0x100092 bpf pflogd
> 81846 179519 1 0 3 0x80 netio pflogd
> 5987 339260 90176 73 3 0x100090 kqread syslogd
> 90176 288179 1 0 3 0x100082 netio syslogd
> 26715 191971 1 77 3 0x100090 poll dhclient
> 46511 488471 1 0 3 0x80 poll dhclient
> 89838 99419 67154 115 3 0x100092 kqread slaacd
> 74675 410858 67154 115 3 0x100092 kqread slaacd
> 67154 112738 1 0 3 0x80 kqread slaacd
> 35000 80939 0 0 3 0x14200 pgzero zerothread
> 1930 360823 0 0 3 0x14200 aiodoned aiodoned
> 7795 131091 0 0 3 0x14200 syncer update
> 9439 93014 0 0 3 0x14200 cleaner cleaner
> 86999 116209 0 0 3 0x14200 reaper reaper
> 27002 169944 0 0 3 0x14200 pgdaemon pagedaemon
> 78386 146948 0 0 3 0x14200 bored crynlk
> 71716 214983 0 0 3 0x14200 bored crypto
> 63505 380144 0 0 3 0x14200 usbtsk usbtask
> 70205 106443 0 0 3 0x14200 usbatsk usbatsk
> 97567 374047 0 0 3 0x14200 bored dwc2
> 86482 325590 0 0 3 0x14200 bored softnet
> 48572 19531 0 0 3 0x14200 bored systqmp
> 98789 134774 0 0 3 0x14200 bored systq
> 36876 246705 0 0 3 0x40014200 bored softclock
> 81598 422523 0 0 3 0x40014200 idle0
> 83526 462821 0 0 3 0x14200 kmalloc kmthread
> 1 154280 0 0 3 0x82 wait init
> 0 0 -1 0 3 0x10200 scheduler swapper
> ddb> trace
> db_enter() at panic+0x150
> panic() at dwc2_device_start+0x448
> dwc2_device_start() at usbd_transfer+0x144
> usbd_transfer() at uaudio_trigger_output+0x120
> uaudio_trigger_output() at audio_start_do+0x94
> audio_start_do() at audio_write+0x1d4
> audio_write() at audiowrite+0x5c
> audiowrite() at spec_write+0xa4
> spec_write() at VOP_WRITE+0x4c
> VOP_WRITE() at vn_write+0xe4
> vn_write() at dofilewritev+0x1c4
> dofilewritev() at sys_write+0xa0
> sys_write() at svc_handler+0x1bc
> svc_handler() at do_el0_sync+0xe0
> do_el0_sync() at handle_el0_sync+0x68
> handle_el0_sync() at 0x7f59761e8
> --- trap ---
> ddb> boot dump
> syncing disks... 6 5 done
> WARNING: not updating battery clock
>
> dump to dev 4,1 not possible
> rebooting...
>
>
> U-Boot 2017.11 (Dec 02 2017 - 03:42:26 -0700)
>
> DRAM: 948 MiB
> RPI 3 Model B (0xa02082)
> MMC: sdhci@7e300000: 0
> reading uboot.env
> In: serial
> Out: vidconsole
> Err: vidconsole
> Net: No ethernet found.
> starting USB...
> USB0: Core Release: 2.80a
> scanning bus 0 for devices... 5 USB Device(s) found
> scanning usb for storage devices... 1 Storage Device(s) found
> Hit any key to stop autoboot: 0
>
> Device 0: Vendor: JetFlash Rev: 1100 Prod: Transcend 16GB
> Type: Removable Hard Disk
> Capacity: 15064.0 MB = 14.7 GB (30851072 x 512)
> ... is now current device
> Scanning usb 0:1...
> Found EFI removable media binary efi/boot/bootaa64.efi
> Scanning disk [email protected]...
> Scanning disk usb_mass_storage.lun0...
> Found 2 disks
> reading efi/boot/bootaa64.efi
> 82748 bytes read in 80 ms (1009.8 KiB/s)
> ## Starting EFI application at 01000000 ...
> >> OpenBSD/arm64 BOOTAA64 0.11
> boot>
> booting sd0a:/bsd: 3927280+587192+577992+805976
> [280187+96+460944+245212]=0x842eb0
> type 0x0 pa 0x0 va 0x0 pages 0x1 attr 0x8
> type 0x7 pa 0x1000 va 0x0 pages 0x1ff attr 0x8
> type 0x2 pa 0x200000 va 0x200000 pages 0x4000 attr 0x8
> type 0x7 pa 0x4200000 va 0x0 pages 0x3e00 attr 0x8
> type 0x4 pa 0x8000000 va 0x8000000 pages 0x6 attr 0x8
> type 0x7 pa 0x8007000 va 0x0 pages 0x31814 attr 0x8
> type 0x2 pa 0x3981b000 va 0x3981b000 pages 0x4 attr 0x8
> type 0x2 pa 0x3981f000 va 0x3981f000 pages 0x4 attr 0x8
> type 0x2 pa 0x39823000 va 0x39823000 pages 0x4 attr 0x8
> type 0x2 pa 0x39827000 va 0x39827000 pages 0x4 attr 0x8
>
>
> <etc>
>
>
