Date: Fri, 05 Jun 2026 08:22:58 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 295869] virtual_oss unkillable Message-ID: <bug-295869-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295869 Bug ID: 295869 Summary: virtual_oss unkillable Product: Base System Version: 15.1-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: bsd@orsolic.org I'm running virtual_oss for changing between internal card (dsp2) and USB (dsp5) on FreeBSD 15.1-RC2. virtual_oss worked for days, switched sound between internal and external card for Firefox, mpv, WINE. I was toying with 2nd USB card (dsp6) which is RP2040 MCU with DSPi firmware, but I am not sure if that provoked this. That "sound card" produces sound on other FreeBSD PC without virtual_oss. On this system trying to play something with mpv will result in stuck audio output - no sound, timestamps are frozen, but there are no errors. Tried to stop virtual_oss but it is still in the list of processes. Closed all application which use sound, still unkillable. # cat /dev/sndstat Installed devices: pcm0: <ATI R6xx (HDMI)> (play) pcm1: <ATI R6xx (HDMI)> (play) pcm2: <Realtek ALCS1200A (Rear Analog 5.1/2.0)> (play/rec) default pcm3: <Realtek ALCS1200A (Front Analog)> (play/rec) pcm4: <Realtek ALCS1200A (Rear Digital)> (play) pcm5: <Jieli Technology USB Composite Device> (play/rec) pcm6: <WeebLabs ASDF Weeb Labs DSPi> (play) Installed devices from userspace: dsp: <virtual_oss device> (play/rec) # grep virtual_oss /etc/rc.conf virtual_oss_enable="YES" virtual_oss_dsp="-i 8 -c 2 -S -r 48000 -b 16 -s 16ms -f /dev/dsp2 -d dsp -t dsp.ctl" # ps aux | grep virtual_oss root 3548 0.0 0.1 85464 23860 - D<Es Mon13 71:45.94 /usr/sbin/virtual_oss -B -D /var/run/virtual_oss/dsp.pid -i 8 -c 2 -S -r 48000 -b 16 -s 16ms -f /dev/dsp2 -d dsp -t dsp.ctl Process is in unkillable state (D). It is single process in that state # ps -axl | grep ' D' 0 0 0 2 -15 0 0 7952 - DLs - 97:52.90 [kernel] 0 3 0 9 -15 0 0 272 crypto_w DL - 0:00.00 [crypto] 0 4 0 5 -15 0 0 80 - DL - 1:44.40 [cam] 0 5 0 4 -54 0 0 16 - DL - 0:00.00 [busdma] 0 6 0 13 0 0 0 5216 t->zthr_ DL - 15:12.33 [zfskern] 0 7 0 12 -15 0 0 16 - DL - 0:42.40 [rand_harvestq] 0 8 0 14 -15 0 0 48 psleep DL - 17:02.62 [pagedaemon] 0 9 0 15 -15 0 0 16 psleep DL - 3:02.29 [vmdaemon] 0 10 0 13 -15 0 0 16 audit_wo DL - 0:00.00 [audit] 0 13 0 8 0 0 0 48 - DL - 0:00.09 [geom] 0 14 0 5 -54 0 0 240 - DL - 32:57.17 [usb] 0 15 0 10 -15 0 0 128 psleep DL - 0:08.65 [bufdaemon] 0 16 0 12 -15 0 0 16 vlruwt DL - 0:01.64 [vnlru] 0 17 0 10 -7 0 0 16 syncer DL - 0:03.86 [syncer] 0 18 0 15 -15 0 0 16 - DL - 4:15.73 [racctd] 0 2182 0 15 -15 0 0 256 sleep DL - 0:00.00 [ng_queue] 0 3319 0 13 -15 0 0 16 pftm DL - 1:08.50 [pf purge] 0 3548 1 15 -40 0 85464 23860 W D<Es - 71:45.88 /usr/sbin/virtual_oss -B -D /var/run/virtual_oss/dsp.pid -i 8 -c 2 -S -r 48000 -b 16 -s 16ms -f /dev/dsp2 -d dsp -t dsp.ctl # procstat -b 3548 PID COMM OSREL PATH # procstat -f 3548 procstat: kinfo_getfile(): No such process PID COMM FD T V FLAGS REF OFFSET PRO NAME # fstat -p 3548 USER CMD PID FD MOUNT INUM MODE SZ|DV R/W fstat: kinfo_getfile(): No such process # procstat -k 3548 PID TID COMM TDNAME KSTACK # procstat -v 3548 PID START END PRT RES PRES REF SHD FLAG TP PATH # procstat -t 3548 PID TID COMM TDNAME CPU PRI STATE WCHAN 3548 101546 virtual_oss - -1 16 sleep W -- You are receiving this mail because: You are the assignee for the bug.home | help
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