Extracting prog: 1m50.141075728s
Minimizing prog: 16m1.5696007s
Simplifying prog options: 2m23.849313764s
Extracting C: 30.730249988s
Simplifying C: 0s


extracting reproducer from 24 programs
testing a last program of every proc
single: executing 4 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): openat$kvm-ioctl$KVM_CREATE_VM-socket$inet_tcp-getsockopt$inet_tcp_buf-ioctl$KVM_CREATE_VCPU-ioctl$KVM_SET_LAPIC-ioctl$KVM_SET_GUEST_DEBUG_x86-ioctl$KVM_RUN-ioctl$KVM_RUN
detailed listing:
executing program 0:
r0 = openat$kvm(0xffffffffffffff9c, &(0x7f0000000180), 0x8ab43, 0x0)
r1 = ioctl$KVM_CREATE_VM(r0, 0xae01, 0x0)
r2 = socket$inet_tcp(0x2, 0x1, 0x0)
getsockopt$inet_tcp_buf(r2, 0x6, 0xd, 0x0, &(0x7f0000000100)) (async)
r3 = ioctl$KVM_CREATE_VCPU(r1, 0xae41, 0x0)
ioctl$KVM_SET_LAPIC(r3, 0x4400ae8f, 0x0) (async)
ioctl$KVM_SET_GUEST_DEBUG_x86(r3, 0x4048ae9b, &(0x7f00000005c0)={0x20003, 0x0, {[0x5, 0x6, 0x40003, 0xa, 0xfffffffffffffffe, 0x6, 0xffffffff]}}) (async)
ioctl$KVM_RUN(r3, 0xae80, 0x0) (async)
ioctl$KVM_RUN(r3, 0xae80, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-mount-openat-write-ioctl$XFS_IOC_FSGROWFSLOG-mount
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
r2 = openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r3, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)
ioctl$XFS_IOC_FSGROWFSLOG(r2, 0x4008586f, &(0x7f0000000000)={0x3, 0x2})
mount(&(0x7f00000001c0)=@filename='127.0.0.1:file0\x00', &(0x7f00000000c0)='./mnt\x00', &(0x7f0000000100)='nfs4\x00', 0x0, &(0x7f0000000140)='addr=127.0.0.1,port=2049,clientaddr=127.0.0.1,minorversion=1\x00')

program crashed: KASAN: slab-use-after-free Read in event_handler
single: successfully extracted reproducer
found reproducer with 16 syscalls
minimizing guilty program
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-mount-openat-write-ioctl$XFS_IOC_FSGROWFSLOG
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
r2 = openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r3 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r3, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)
ioctl$XFS_IOC_FSGROWFSLOG(r2, 0x4008586f, &(0x7f0000000000)={0x3, 0x2})

program crashed: KASAN: slab-use-after-free Read in event_handler
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r2, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-mount-openat
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-mount-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mkdirat-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
r2 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r2, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-openat$selinux_enforce-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
openat$selinux_enforce(0xffffffffffffff9c, &(0x7f0000000180), 0x101100, 0x0)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r2, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mmap-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2, 0x0, 0x0, 0x0, <r1=>0xffffffffffffffff})
mmap(&(0x7f00008a9000/0x13000)=nil, 0x13000, 0x1000001, 0x11, r1, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r2 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r2, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_cleanup_unlink_list
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-ioctl$vim2m_VIDIOC_EXPBUF-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
ioctl$vim2m_VIDIOC_EXPBUF(r0, 0xc0405610, &(0x7f0000000040)={0x2})
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_shutdown_connection
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-ioctl$vim2m_VIDIOC_REQBUFS-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
r0 = syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
ioctl$vim2m_VIDIOC_REQBUFS(r0, 0xc0145608, &(0x7f00000000c0)={0x1, 0x2, 0x1})
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r1 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r1, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-syz_open_dev$vim2m-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
syz_open_dev$vim2m(&(0x7f0000000100), 0x0, 0x2)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_shutdown_connection
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_shutdown_connection
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mlock-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mlock(&(0x7f0000520000/0x1000)=nil, 0x1000)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-mmap-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
mmap(&(0x7f0000000000/0x800000)=nil, 0x800000, 0xb, 0xc3072, 0xffffffffffffffff, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): setns-syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
setns(0xc9, 0x0)
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_cleanup_unlink_list
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000040)='./mnt\x00', 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_cleanup_unlink_list
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_cleanup_unlink_list
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)

program did not crash
testing program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100), 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=34.804102087s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
program did not crash
simplifying guilty program options
testing program (duration=34.804102087s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
extracting C reproducer
testing compiled C program (duration=34.804102087s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
program did not crash
testing program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
extracting C reproducer
testing compiled C program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
program did not crash
testing program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program did not crash
validation run: crashed=false
testing program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
validation run: crashed=true
testing program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in vhci_shutdown_connection
validation run: crashed=true
testing program (duration=34.804102087s, {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}}): syz_clone-mkdirat-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./sys\x00', 0x1ff)
mount(0x0, &(0x7f0000000040)='./sys\x00', &(0x7f0000000080)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f00000000c0)='./sys/bus/platform/drivers/vhci_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000100)='vhci_hcd.0\x00', 0xa)

program crashed: KASAN: slab-use-after-free Read in event_handler
validation run: crashed=true
reproducing took 23m38.256849988s
repro crashed as (corrupted=false):
vhci_hcd vhci_hcd.0: release socket
vhci_hcd vhci_hcd.0: disconnect device
==================================================================
BUG: KASAN: slab-use-after-free in __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
BUG: KASAN: slab-use-after-free in _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
Read of size 1 at addr ffff8880279a5008 by task kworker/u32:3/5788

CPU: 3 UID: 0 PID: 5788 Comm: kworker/u32:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: usbip_event event_handler
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 __kasan_check_byte+0x36/0x50 mm/kasan/common.c:574
 kasan_check_byte include/linux/kasan.h:402 [inline]
 lock_acquire kernel/locking/lockdep.c:5842 [inline]
 lock_acquire+0x132/0x370 kernel/locking/lockdep.c:5825
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
 unset_event drivers/usb/usbip/usbip_event.c:35 [inline]
 event_handler+0x21e/0x570 drivers/usb/usbip/usbip_event.c:80
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 1:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5334 [inline]
 __kmalloc_noprof+0x322/0x820 mm/slub.c:5359
 _kmalloc_noprof include/linux/slab.h:992 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 __usb_create_hcd+0x5e/0xac0 drivers/usb/core/hcd.c:2566
 vhci_hcd_probe+0xf3/0x4e0 drivers/usb/usbip/vhci_hcd.c:1378
 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
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 platform_device_add+0x35a/0x800 drivers/base/platform.c:762
 platform_device_register_full+0x5cf/0x830 drivers/base/platform.c:902
 vhci_hcd_init+0x1a1/0x2f0 drivers/usb/usbip/vhci_hcd.c:1557
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 5928:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2677 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6692
 hcd_release drivers/usb/core/hcd.c:2690 [inline]
 kref_put include/linux/kref.h:65 [inline]
 usb_put_hcd drivers/usb/core/hcd.c:2704 [inline]
 usb_put_hcd+0x149/0x1f0 drivers/usb/core/hcd.c:2701
 vhci_hcd_remove+0x107/0x1b0 drivers/usb/usbip/vhci_hcd.c:1434
 platform_remove+0x5f/0x80 drivers/base/platform.c:1456
 device_remove+0xcb/0x180 drivers/base/dd.c:616
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
 unbind_store+0xf8/0x110 drivers/base/bus.c:244
 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

Last potentially related work creation:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
 insert_work+0x36/0x230 kernel/workqueue.c:2226
 __queue_work+0x9bc/0x12b0 kernel/workqueue.c:2401
 queue_work_on+0x1a9/0x1e0 kernel/workqueue.c:2452
 queue_work include/linux/workqueue.h:699 [inline]
 usb_hcd_giveback_urb+0x330/0x4a0 drivers/usb/core/hcd.c:1758
 usb_rh_urb_dequeue drivers/usb/core/hcd.c:845 [inline]
 unlink1+0x418/0x510 drivers/usb/core/hcd.c:1580
 usb_hcd_unlink_urb+0x131/0x210 drivers/usb/core/hcd.c:1617
 usb_kill_urb drivers/usb/core/urb.c:716 [inline]
 usb_kill_urb+0x121/0x320 drivers/usb/core/urb.c:703
 hub_quiesce+0x1e9/0x320 drivers/usb/core/hub.c:1412
 hub_suspend+0x4ab/0x9e0 drivers/usb/core/hub.c:4008
 usb_suspend_interface drivers/usb/core/driver.c:1323 [inline]
 usb_suspend_both+0x288/0x950 drivers/usb/core/driver.c:1446
 usb_runtime_suspend+0x49/0x120 drivers/usb/core/driver.c:2000
 __rpm_callback+0xc8/0x620 drivers/base/power/runtime.c:406
 rpm_callback+0x16a/0x1b0 drivers/base/power/runtime.c:460
 rpm_suspend+0x2f4/0x11a0 drivers/base/power/runtime.c:698
 __pm_runtime_suspend+0xba/0x1a0 drivers/base/power/runtime.c:1167
 pm_runtime_put_sync_autosuspend include/linux/pm_runtime.h:740 [inline]
 usb_new_device.cold+0xd61/0x115c drivers/usb/core/hub.c:2727
 register_root_hub+0x4e6/0x639 drivers/usb/core/hcd.c:990
 usb_add_hcd.cold+0xccd/0x1158 drivers/usb/core/hcd.c:2987
 vhci_hcd_probe+0x14b/0x4e0 drivers/usb/usbip/vhci_hcd.c:1388
 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
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 platform_device_add+0x35a/0x800 drivers/base/platform.c:762
 platform_device_register_full+0x5cf/0x830 drivers/base/platform.c:902
 vhci_hcd_init+0x1a1/0x2f0 drivers/usb/usbip/vhci_hcd.c:1557
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Second to last potentially related work creation:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
 insert_work+0x36/0x230 kernel/workqueue.c:2226
 __queue_work+0x9bc/0x12b0 kernel/workqueue.c:2401
 queue_work_on+0x1a9/0x1e0 kernel/workqueue.c:2452
 queue_work include/linux/workqueue.h:699 [inline]
 usb_hcd_giveback_urb+0x3b8/0x4a0 drivers/usb/core/hcd.c:1760
 rh_call_control drivers/usb/core/hcd.c:706 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:817 [inline]
 usb_hcd_submit_urb+0xab7/0x2150 drivers/usb/core/hcd.c:1538
 usb_submit_urb+0x827/0x19b0 drivers/usb/core/urb.c:586
 usb_start_wait_urb+0x10e/0x580 drivers/usb/core/message.c:62
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x328/0x4b0 drivers/usb/core/message.c:167
 get_port_status drivers/usb/core/hub.c:607 [inline]
 hub_ext_port_status+0x152/0x600 drivers/usb/core/hub.c:624
 usb_hub_port_status drivers/usb/core/hub.c:674 [inline]
 hub_activate+0x6e5/0x1c40 drivers/usb/core/hub.c:1185
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff8880279a4000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 4104 bytes inside of
 freed 8192-byte region [ffff8880279a4000, ffff8880279a6000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x279a0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801bc43180 dead000000000122 0000000000000000
raw: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801bc43180 dead000000000122 0000000000000000
head: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 7746279016, free_ts 7596447672
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3266 [inline]
 allocate_slab mm/slub.c:3380 [inline]
 new_slab+0xa2/0x640 mm/slub.c:3426
 refill_objects+0xe3/0x410 mm/slub.c:7310
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4675
 alloc_from_pcs mm/slub.c:4773 [inline]
 slab_alloc_node mm/slub.c:4905 [inline]
 __kmalloc_cache_noprof+0x479/0x6c0 mm/slub.c:5485
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 rd_alloc_device+0x5e/0xc0 drivers/target/target_core_rd.c:274
 target_alloc_device+0xa8/0x1a50 drivers/target/target_core_device.c:721
 core_dev_setup_virtual_lun0+0xff/0x260 drivers/target/target_core_device.c:1088
 target_core_init_configfs+0x327/0x6a0 drivers/target/target_core_configfs.c:3816
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
page last free pid 34 tgid 34 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_pages_prepare+0x586/0xd80 mm/page_alloc.c:1451
 __free_contig_range_common+0x14f/0x250 mm/page_alloc.c:6897
 __free_contig_range mm/page_alloc.c:6942 [inline]
 free_pages_bulk+0x12a/0x200 mm/page_alloc.c:5257
 vm_area_free_pages+0xad/0x2b0 mm/vmalloc.c:3439
 vfree mm/vmalloc.c:3488 [inline]
 vfree+0x107/0x750 mm/vmalloc.c:3462
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3392
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff8880279a4f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880279a4f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880279a5000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8880279a5080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880279a5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
vhci_hcd vhci_hcd.0: release socket
vhci_hcd vhci_hcd.0: disconnect device
==================================================================
BUG: KASAN: slab-use-after-free in __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
BUG: KASAN: slab-use-after-free in _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
Read of size 1 at addr ffff8880279a5008 by task kworker/u32:3/5788

CPU: 3 UID: 0 PID: 5788 Comm: kworker/u32:3 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Workqueue: usbip_event event_handler
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x100/0x190 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:378 [inline]
 print_report+0x13d/0x4b0 mm/kasan/report.c:482
 kasan_report+0xdf/0x1c0 mm/kasan/report.c:595
 __kasan_check_byte+0x36/0x50 mm/kasan/common.c:574
 kasan_check_byte include/linux/kasan.h:402 [inline]
 lock_acquire kernel/locking/lockdep.c:5842 [inline]
 lock_acquire+0x132/0x370 kernel/locking/lockdep.c:5825
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:132 [inline]
 _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:166
 unset_event drivers/usb/usbip/usbip_event.c:35 [inline]
 event_handler+0x21e/0x570 drivers/usb/usbip/usbip_event.c:80
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

Allocated by task 1:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
 kasan_kmalloc include/linux/kasan.h:263 [inline]
 __do_kmalloc_node mm/slub.c:5334 [inline]
 __kmalloc_noprof+0x322/0x820 mm/slub.c:5359
 _kmalloc_noprof include/linux/slab.h:992 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 __usb_create_hcd+0x5e/0xac0 drivers/usb/core/hcd.c:2566
 vhci_hcd_probe+0xf3/0x4e0 drivers/usb/usbip/vhci_hcd.c:1378
 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
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 platform_device_add+0x35a/0x800 drivers/base/platform.c:762
 platform_device_register_full+0x5cf/0x830 drivers/base/platform.c:902
 vhci_hcd_init+0x1a1/0x2f0 drivers/usb/usbip/vhci_hcd.c:1557
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Freed by task 5928:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_save_track+0x14/0x30 mm/kasan/common.c:78
 kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
 poison_slab_object mm/kasan/common.c:253 [inline]
 __kasan_slab_free+0x5f/0x80 mm/kasan/common.c:285
 kasan_slab_free include/linux/kasan.h:235 [inline]
 slab_free_hook mm/slub.c:2677 [inline]
 slab_free mm/slub.c:6377 [inline]
 kfree+0x22b/0x6c0 mm/slub.c:6692
 hcd_release drivers/usb/core/hcd.c:2690 [inline]
 kref_put include/linux/kref.h:65 [inline]
 usb_put_hcd drivers/usb/core/hcd.c:2704 [inline]
 usb_put_hcd+0x149/0x1f0 drivers/usb/core/hcd.c:2701
 vhci_hcd_remove+0x107/0x1b0 drivers/usb/usbip/vhci_hcd.c:1434
 platform_remove+0x5f/0x80 drivers/base/platform.c:1456
 device_remove+0xcb/0x180 drivers/base/dd.c:616
 __device_release_driver drivers/base/dd.c:1349 [inline]
 device_release_driver_internal+0x44e/0x620 drivers/base/dd.c:1372
 unbind_store+0xf8/0x110 drivers/base/bus.c:244
 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

Last potentially related work creation:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
 insert_work+0x36/0x230 kernel/workqueue.c:2226
 __queue_work+0x9bc/0x12b0 kernel/workqueue.c:2401
 queue_work_on+0x1a9/0x1e0 kernel/workqueue.c:2452
 queue_work include/linux/workqueue.h:699 [inline]
 usb_hcd_giveback_urb+0x330/0x4a0 drivers/usb/core/hcd.c:1758
 usb_rh_urb_dequeue drivers/usb/core/hcd.c:845 [inline]
 unlink1+0x418/0x510 drivers/usb/core/hcd.c:1580
 usb_hcd_unlink_urb+0x131/0x210 drivers/usb/core/hcd.c:1617
 usb_kill_urb drivers/usb/core/urb.c:716 [inline]
 usb_kill_urb+0x121/0x320 drivers/usb/core/urb.c:703
 hub_quiesce+0x1e9/0x320 drivers/usb/core/hub.c:1412
 hub_suspend+0x4ab/0x9e0 drivers/usb/core/hub.c:4008
 usb_suspend_interface drivers/usb/core/driver.c:1323 [inline]
 usb_suspend_both+0x288/0x950 drivers/usb/core/driver.c:1446
 usb_runtime_suspend+0x49/0x120 drivers/usb/core/driver.c:2000
 __rpm_callback+0xc8/0x620 drivers/base/power/runtime.c:406
 rpm_callback+0x16a/0x1b0 drivers/base/power/runtime.c:460
 rpm_suspend+0x2f4/0x11a0 drivers/base/power/runtime.c:698
 __pm_runtime_suspend+0xba/0x1a0 drivers/base/power/runtime.c:1167
 pm_runtime_put_sync_autosuspend include/linux/pm_runtime.h:740 [inline]
 usb_new_device.cold+0xd61/0x115c drivers/usb/core/hub.c:2727
 register_root_hub+0x4e6/0x639 drivers/usb/core/hcd.c:990
 usb_add_hcd.cold+0xccd/0x1158 drivers/usb/core/hcd.c:2987
 vhci_hcd_probe+0x14b/0x4e0 drivers/usb/usbip/vhci_hcd.c:1388
 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
 driver_probe_device+0x4a/0x140 drivers/base/dd.c:898
 __device_attach_driver+0x1df/0x320 drivers/base/dd.c:1026
 bus_for_each_drv+0x159/0x1e0 drivers/base/bus.c:500
 __device_attach+0x1e4/0x4d0 drivers/base/dd.c:1098
 device_initial_probe+0xaf/0xd0 drivers/base/dd.c:1153
 bus_probe_device+0x64/0x160 drivers/base/bus.c:620
 device_add+0x121d/0x1970 drivers/base/core.c:3772
 platform_device_add+0x35a/0x800 drivers/base/platform.c:762
 platform_device_register_full+0x5cf/0x830 drivers/base/platform.c:902
 vhci_hcd_init+0x1a1/0x2f0 drivers/usb/usbip/vhci_hcd.c:1557
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Second to last potentially related work creation:
 kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
 kasan_record_aux_stack+0xa7/0xc0 mm/kasan/generic.c:556
 insert_work+0x36/0x230 kernel/workqueue.c:2226
 __queue_work+0x9bc/0x12b0 kernel/workqueue.c:2401
 queue_work_on+0x1a9/0x1e0 kernel/workqueue.c:2452
 queue_work include/linux/workqueue.h:699 [inline]
 usb_hcd_giveback_urb+0x3b8/0x4a0 drivers/usb/core/hcd.c:1760
 rh_call_control drivers/usb/core/hcd.c:706 [inline]
 rh_urb_enqueue drivers/usb/core/hcd.c:817 [inline]
 usb_hcd_submit_urb+0xab7/0x2150 drivers/usb/core/hcd.c:1538
 usb_submit_urb+0x827/0x19b0 drivers/usb/core/urb.c:586
 usb_start_wait_urb+0x10e/0x580 drivers/usb/core/message.c:62
 usb_internal_control_msg drivers/usb/core/message.c:117 [inline]
 usb_control_msg+0x328/0x4b0 drivers/usb/core/message.c:167
 get_port_status drivers/usb/core/hub.c:607 [inline]
 hub_ext_port_status+0x152/0x600 drivers/usb/core/hub.c:624
 usb_hub_port_status drivers/usb/core/hub.c:674 [inline]
 hub_activate+0x6e5/0x1c40 drivers/usb/core/hub.c:1185
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

The buggy address belongs to the object at ffff8880279a4000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 4104 bytes inside of
 freed 8192-byte region [ffff8880279a4000, ffff8880279a6000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x279a0
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 00fff00000000040 ffff88801bc43180 dead000000000122 0000000000000000
raw: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000
head: 00fff00000000040 ffff88801bc43180 dead000000000122 0000000000000000
head: 0000000000000000 0000000800020002 00000000f5000000 0000000000000000
head: 00fff00000000003 fffffffffffffe01 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0xd20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 1, tgid 1 (swapper/0), ts 7746279016, free_ts 7596447672
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0xfd/0x120 mm/page_alloc.c:1859
 prep_new_page mm/page_alloc.c:1867 [inline]
 get_page_from_freelist+0xf48/0x3530 mm/page_alloc.c:3946
 __alloc_frozen_pages_noprof+0x299/0x2dc0 mm/page_alloc.c:5304
 alloc_slab_page mm/slub.c:3266 [inline]
 allocate_slab mm/slub.c:3380 [inline]
 new_slab+0xa2/0x640 mm/slub.c:3426
 refill_objects+0xe3/0x410 mm/slub.c:7310
 refill_sheaf mm/slub.c:2804 [inline]
 __pcs_replace_empty_main+0x376/0x680 mm/slub.c:4675
 alloc_from_pcs mm/slub.c:4773 [inline]
 slab_alloc_node mm/slub.c:4905 [inline]
 __kmalloc_cache_noprof+0x479/0x6c0 mm/slub.c:5485
 _kmalloc_noprof include/linux/slab.h:988 [inline]
 _kzalloc_noprof include/linux/slab.h:1309 [inline]
 rd_alloc_device+0x5e/0xc0 drivers/target/target_core_rd.c:274
 target_alloc_device+0xa8/0x1a50 drivers/target/target_core_device.c:721
 core_dev_setup_virtual_lun0+0xff/0x260 drivers/target/target_core_device.c:1088
 target_core_init_configfs+0x327/0x6a0 drivers/target/target_core_configfs.c:3816
 do_one_initcall+0x11d/0x700 init/main.c:1347
 do_initcall_level init/main.c:1409 [inline]
 do_initcalls init/main.c:1425 [inline]
 do_basic_setup init/main.c:1445 [inline]
 kernel_init_freeable+0x6ea/0x7b0 init/main.c:1658
 kernel_init+0x1f/0x1e0 init/main.c:1548
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
page last free pid 34 tgid 34 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 __free_pages_prepare mm/page_alloc.c:1406 [inline]
 free_pages_prepare+0x586/0xd80 mm/page_alloc.c:1451
 __free_contig_range_common+0x14f/0x250 mm/page_alloc.c:6897
 __free_contig_range mm/page_alloc.c:6942 [inline]
 free_pages_bulk+0x12a/0x200 mm/page_alloc.c:5257
 vm_area_free_pages+0xad/0x2b0 mm/vmalloc.c:3439
 vfree mm/vmalloc.c:3488 [inline]
 vfree+0x107/0x750 mm/vmalloc.c:3462
 delayed_vfree_work+0x56/0x80 mm/vmalloc.c:3392
 process_one_work+0xa23/0x1940 kernel/workqueue.c:3322
 process_scheduled_works kernel/workqueue.c:3405 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3486
 kthread+0x370/0x450 kernel/kthread.c:436
 ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245

Memory state around the buggy address:
 ffff8880279a4f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880279a4f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8880279a5000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff8880279a5080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8880279a5100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================