Extracting prog: 35.86769965s Minimizing prog: 25m26.042688864s Simplifying prog options: 0s Extracting C: 1m6.013334569s Simplifying C: 6m29.685688958s extracting reproducer from 20 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED-write$dsp-openat$adsp1-ppoll-openat$audio1-read$dsp detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) write$dsp(r2, &(0x7f0000002200)='\x00\x00\x00\x00', 0x4) r3 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000300), 0x200, 0x0) ppoll(&(0x7f0000000340)=[{r3, 0x8108}], 0x1, 0x0, 0x0, 0x0) r4 = openat$audio1(0xffffffffffffff9c, &(0x7f0000000380), 0x0, 0x0) read$dsp(r4, &(0x7f0000001400), 0x1000) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe single: successfully extracted reproducer found reproducer with 14 syscalls minimizing guilty program testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED-write$dsp-openat$adsp1-ppoll-openat$audio1 detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) write$dsp(r2, &(0x7f0000002200)='\x00\x00\x00\x00', 0x4) r3 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000300), 0x200, 0x0) ppoll(&(0x7f0000000340)=[{r3, 0x8108}], 0x1, 0x0, 0x0, 0x0) openat$audio1(0xffffffffffffff9c, &(0x7f0000000380), 0x0, 0x0) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED-write$dsp-openat$adsp1-ppoll detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) write$dsp(r2, &(0x7f0000002200)='\x00\x00\x00\x00', 0x4) r3 = openat$adsp1(0xffffffffffffff9c, &(0x7f0000000300), 0x200, 0x0) ppoll(&(0x7f0000000340)=[{r3, 0x8108}], 0x1, 0x0, 0x0, 0x0) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED-write$dsp-openat$adsp1 detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) write$dsp(r2, &(0x7f0000002200)='\x00\x00\x00\x00', 0x4) openat$adsp1(0xffffffffffffff9c, &(0x7f0000000300), 0x200, 0x0) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED-write$dsp detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) write$dsp(r2, &(0x7f0000002200)='\x00\x00\x00\x00', 0x4) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS-ioctl$SNDCTL_DSP_SPEED detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) ioctl$SNDCTL_DSP_SPEED(r2, 0xc0045002, &(0x7f0000000280)=0xac44) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1-ioctl$SNDCTL_DSP_CHANNELS detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) r2 = openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) ioctl$SNDCTL_DSP_CHANNELS(r2, 0xc0045006, &(0x7f0000000240)=0x2) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write-openat$dsp1 detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) openat$dsp1(0xffffffffffffff9c, &(0x7f0000000200), 0x20080, 0x0) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) write(0xffffffffffffffff, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r0, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000100)='snd_dummy\x00', 0xa) r0 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r0, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount-openat-write-openat-write detailed listing: executing program 0: mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, 0x0, 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, 0x0, &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', 0x0, 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, 0x0, 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100), 0x0) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, 0x0, 0x0) program did not crash testing program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180), 0x0) program did not crash extracting C reproducer testing compiled C program (duration=45.42615346s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe simplifying C reproducer testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing compiled C program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe testing program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe validation run: crashed=true testing program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe validation run: crashed=true testing program (duration=45.42615346s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write-openat-write detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='sysfs\x00', 0x0, 0x0) r0 = openat(0xffffffffffffff9c, &(0x7f0000000080)='./sys/bus/platform/devices/pcspkr/driver_override\x00', 0x1, 0x0) write(r0, &(0x7f0000000100)='snd_dummy\x00', 0xa) r1 = openat(0xffffffffffffff9c, &(0x7f0000000140)='./sys/bus/platform/drivers/snd_dummy/bind\x00', 0x1, 0x0) write(r1, &(0x7f0000000180)='pcspkr\x00', 0x7) program crashed: UBSAN: array-index-out-of-bounds in snd_dummy_probe validation run: crashed=true reproducing took 37m8.219678689s repro crashed as (corrupted=false): ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in sound/drivers/dummy.c:1020:54 index -1 is out of range for type 'char *[8]' CPU: 1 UID: 0 PID: 5833 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x30 lib/ubsan.c:233 __ubsan_handle_out_of_bounds+0xcc/0xf0 lib/ubsan.c:455 snd_dummy_probe+0xcac/0x1200 sound/drivers/dummy.c:1020 platform_probe+0x106/0x1d0 drivers/base/platform.c:1439 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 device_driver_attach+0xd1/0x220 drivers/base/dd.c:1203 bind_store+0xf4/0x190 drivers/base/bus.c:267 drv_attr_store+0x74/0xb0 drivers/base/bus.c:125 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6245d9e019 Code: ff 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 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc171080b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6246025fa0 RCX: 00007f6245d9e019 RDX: 0000000000000007 RSI: 0000200000000180 RDI: 0000000000000004 RBP: 00007f6245e3500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6246025fac R14: 00007f6246025fa0 R15: 00007f6246025fa0 ---[ end trace ]--- final repro crashed as (corrupted=false): ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in sound/drivers/dummy.c:1020:54 index -1 is out of range for type 'char *[8]' CPU: 1 UID: 0 PID: 5833 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/16/2026 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x30 lib/ubsan.c:233 __ubsan_handle_out_of_bounds+0xcc/0xf0 lib/ubsan.c:455 snd_dummy_probe+0xcac/0x1200 sound/drivers/dummy.c:1020 platform_probe+0x106/0x1d0 drivers/base/platform.c:1439 call_driver_probe drivers/base/dd.c:628 [inline] really_probe+0x241/0xa60 drivers/base/dd.c:706 __driver_probe_device+0x20e/0x450 drivers/base/dd.c:868 device_driver_attach+0xd1/0x220 drivers/base/dd.c:1203 bind_store+0xf4/0x190 drivers/base/bus.c:267 drv_attr_store+0x74/0xb0 drivers/base/bus.c:125 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:145 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:345 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x6ac/0x1050 fs/read_write.c:687 ksys_write+0x12a/0x250 fs/read_write.c:739 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x115/0x870 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6245d9e019 Code: ff 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 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc171080b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f6246025fa0 RCX: 00007f6245d9e019 RDX: 0000000000000007 RSI: 0000200000000180 RDI: 0000000000000004 RBP: 00007f6245e3500c R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f6246025fac R14: 00007f6246025fa0 R15: 00007f6246025fa0 ---[ end trace ]---