Extracting prog: 1m13.527133037s
Minimizing prog: 14m29.600680872s
Simplifying prog options: 0s
Extracting C: 39.878936235s
Simplifying C: 16m17.485607516s


extracting reproducer from 1 programs
testing a last program of every proc
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGKEY-syz_usb_connect
detailed listing:
executing program 0:
ioctl$EVIOCGKEY(0xffffffffffffffff, 0x80404518, 0x0)
syz_usb_connect(0x0, 0x2a4, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x292, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0xb, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}, [@mdlm_detail={0x4, 0x24, 0x13, 0xf9}, @acm={0x4, 0x24, 0x2, 0x2}, @dmm={0x7, 0x24, 0x14, 0x0, 0x4}]}], [{{0x9, 0x5, 0x6, 0x0, 0x40, 0x11, 0xf, 0x3, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x3, 0xc, 0x10, 0x4, 0xc, 0xb}}, {{0x9, 0x5, 0x3, 0x0, 0x40, 0x1, 0xf, 0x7}}, {{0x9, 0x5, 0x8, 0x0, 0x8, 0x7, 0x0, 0x7, [@generic={0x2, 0x11}, @uac_iso={0x7, 0x25, 0x1, 0x3, 0x9b, 0x9}]}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x92, 0xb, 0x6, [@generic={0x2, 0xe}]}}, {{0x9, 0x5, 0x2, 0xcf3bef43991b8545, 0x200, 0xd, 0x40}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x99, 0x28, 0x0, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0x8}, @uac_iso={0x7, 0x25, 0x1, 0x1, 0x4, 0x6}]}}, {{0x9, 0x5, 0xd, 0x0, 0x10, 0x80, 0x3, 0x2, [@generic={0x2, 0x7}, @generic={0x2, 0x20}]}}, {{0x9, 0x5, 0xd, 0x8, 0x8, 0x38, 0xfe, 0x9}}, {{0x9, 0x5, 0x1, 0x0, 0x20, 0x22, 0xd, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x1, 0xd, 0xf}, @generic={0x2, 0x5}]}}, {{0x9, 0x5, 0xf, 0x8, 0x400, 0xf, 0x40, 0x6}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x5, 0x7, 0x60, 0xb9, 0x0, [], [{{0x9, 0x5, 0x0, 0x2, 0x3ff, 0x4, 0x3, 0x18}}, {{0x9, 0x5, 0xf, 0x10, 0x10, 0x9, 0xfd, 0xf, [@generic={0x2, 0x22}, @generic={0x2, 0x2}]}}, {{0x9, 0x5, 0xc, 0x4, 0x3ff, 0x5, 0x40, 0x45, [@uac_iso={0x7, 0x25, 0x1, 0x2, 0x1, 0x1}]}}, {{0x9, 0x5, 0x0, 0x1, 0x400, 0x0, 0x33, 0x4, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x4}]}}, {{0x9, 0x5, 0xf, 0x1, 0x0, 0x0, 0x4, 0x9, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x80, 0x1}, @generic={0x2, 0xa}]}}]}}, {{0x9, 0x4, 0x6c, 0x8, 0xa, 0xff, 0x4, 0x7a, 0x1f, [], [{{0x9, 0x5, 0x1, 0x0, 0x200, 0xa, 0x0, 0x5, [@generic={0x2, 0xd}, @generic={0x2, 0x7}]}}, {{0x9, 0x5, 0x0, 0xc, 0x20, 0x7f, 0x1, 0x81, [@generic={0x17, 0xe, "88f11d3f6d648e701e14340cf70ff3958d5e488c54"}, @uac_iso={0x7, 0x25, 0x1, 0x80, 0xb7, 0xff81}]}}, {{0x9, 0x5, 0x9, 0x1, 0x8, 0x1, 0x6, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x46, 0x200}]}}, {{0x9, 0x5, 0x1a, 0x0, 0x10, 0x8, 0x5, 0x5, [@generic={0x2, 0x20}]}}, {{0x9, 0x5, 0x80, 0xc, 0x20, 0x8, 0x5, 0x66}}, {{0x9, 0x5, 0x5, 0x1, 0x8, 0x76, 0x1a, 0x0, [@generic={0x2, 0x1}, @generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x5, 0x0, 0x20, 0xe, 0x4, 0x7}}, {{0x9, 0x5, 0x0, 0x10, 0x20, 0x37, 0xbf, 0xb}}, {{0x9, 0x5, 0x8, 0x8, 0x3d7, 0x26, 0x2, 0xc9}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x9, 0x2e, 0xfb}}]}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGKEY
detailed listing:
executing program 0:
ioctl$EVIOCGKEY(0xffffffffffffffff, 0x80404518, 0x0)

program did not crash
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x2a4, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x292, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0xb, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}, [@mdlm_detail={0x4, 0x24, 0x13, 0xf9}, @acm={0x4, 0x24, 0x2, 0x2}, @dmm={0x7, 0x24, 0x14, 0x0, 0x4}]}], [{{0x9, 0x5, 0x6, 0x0, 0x40, 0x11, 0xf, 0x3, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x3, 0xc, 0x10, 0x4, 0xc, 0xb}}, {{0x9, 0x5, 0x3, 0x0, 0x40, 0x1, 0xf, 0x7}}, {{0x9, 0x5, 0x8, 0x0, 0x8, 0x7, 0x0, 0x7, [@generic={0x2, 0x11}, @uac_iso={0x7, 0x25, 0x1, 0x3, 0x9b, 0x9}]}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x92, 0xb, 0x6, [@generic={0x2, 0xe}]}}, {{0x9, 0x5, 0x2, 0xcf3bef43991b8545, 0x200, 0xd, 0x40}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x99, 0x28, 0x0, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0x8}, @uac_iso={0x7, 0x25, 0x1, 0x1, 0x4, 0x6}]}}, {{0x9, 0x5, 0xd, 0x0, 0x10, 0x80, 0x3, 0x2, [@generic={0x2, 0x7}, @generic={0x2, 0x20}]}}, {{0x9, 0x5, 0xd, 0x8, 0x8, 0x38, 0xfe, 0x9}}, {{0x9, 0x5, 0x1, 0x0, 0x20, 0x22, 0xd, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x1, 0xd, 0xf}, @generic={0x2, 0x5}]}}, {{0x9, 0x5, 0xf, 0x8, 0x400, 0xf, 0x40, 0x6}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x5, 0x7, 0x60, 0xb9, 0x0, [], [{{0x9, 0x5, 0x0, 0x2, 0x3ff, 0x4, 0x3, 0x18}}, {{0x9, 0x5, 0xf, 0x10, 0x10, 0x9, 0xfd, 0xf, [@generic={0x2, 0x22}, @generic={0x2, 0x2}]}}, {{0x9, 0x5, 0xc, 0x4, 0x3ff, 0x5, 0x40, 0x45, [@uac_iso={0x7, 0x25, 0x1, 0x2, 0x1, 0x1}]}}, {{0x9, 0x5, 0x0, 0x1, 0x400, 0x0, 0x33, 0x4, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x4}]}}, {{0x9, 0x5, 0xf, 0x1, 0x0, 0x0, 0x4, 0x9, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x80, 0x1}, @generic={0x2, 0xa}]}}]}}, {{0x9, 0x4, 0x6c, 0x8, 0xa, 0xff, 0x4, 0x7a, 0x1f, [], [{{0x9, 0x5, 0x1, 0x0, 0x200, 0xa, 0x0, 0x5, [@generic={0x2, 0xd}, @generic={0x2, 0x7}]}}, {{0x9, 0x5, 0x0, 0xc, 0x20, 0x7f, 0x1, 0x81, [@generic={0x17, 0xe, "88f11d3f6d648e701e14340cf70ff3958d5e488c54"}, @uac_iso={0x7, 0x25, 0x1, 0x80, 0xb7, 0xff81}]}}, {{0x9, 0x5, 0x9, 0x1, 0x8, 0x1, 0x6, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x46, 0x200}]}}, {{0x9, 0x5, 0x1a, 0x0, 0x10, 0x8, 0x5, 0x5, [@generic={0x2, 0x20}]}}, {{0x9, 0x5, 0x80, 0xc, 0x20, 0x8, 0x5, 0x66}}, {{0x9, 0x5, 0x5, 0x1, 0x8, 0x76, 0x1a, 0x0, [@generic={0x2, 0x1}, @generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x5, 0x0, 0x20, 0xe, 0x4, 0x7}}, {{0x9, 0x5, 0x0, 0x10, 0x20, 0x37, 0xbf, 0xb}}, {{0x9, 0x5, 0x8, 0x8, 0x3d7, 0x26, 0x2, 0xc9}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x9, 0x2e, 0xfb}}]}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program did not crash
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x21b, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x209, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0xb, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}, [@mdlm_detail={0x4, 0x24, 0x13, 0xf9}, @acm={0x4, 0x24, 0x2, 0x2}, @dmm={0x7, 0x24, 0x14, 0x0, 0x4}]}], [{{0x9, 0x5, 0x6, 0x0, 0x40, 0x11, 0xf, 0x3, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x3, 0xc, 0x10, 0x4, 0xc, 0xb}}, {{0x9, 0x5, 0x3, 0x0, 0x40, 0x1, 0xf, 0x7}}, {{0x9, 0x5, 0x8, 0x0, 0x8, 0x7, 0x0, 0x7, [@generic={0x2, 0x11}, @uac_iso={0x7, 0x25, 0x1, 0x3, 0x9b, 0x9}]}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x92, 0xb, 0x6, [@generic={0x2, 0xe}]}}, {{0x9, 0x5, 0x2, 0xcf3bef43991b8545, 0x200, 0xd, 0x40}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x99, 0x28, 0x0, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0x8}, @uac_iso={0x7, 0x25, 0x1, 0x1, 0x4, 0x6}]}}, {{0x9, 0x5, 0xd, 0x0, 0x10, 0x80, 0x3, 0x2, [@generic={0x2, 0x7}, @generic={0x2, 0x20}]}}, {{0x9, 0x5, 0xd, 0x8, 0x8, 0x38, 0xfe, 0x9}}, {{0x9, 0x5, 0x1, 0x0, 0x20, 0x22, 0xd, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x1, 0xd, 0xf}, @generic={0x2, 0x5}]}}, {{0x9, 0x5, 0xf, 0x8, 0x400, 0xf, 0x40, 0x6}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x5, 0x7, 0x60, 0xb9, 0x0, [], [{{0x9, 0x5, 0x0, 0x2, 0x3ff, 0x4, 0x3, 0x18}}, {{0x9, 0x5, 0xf, 0x10, 0x10, 0x9, 0xfd, 0xf, [@generic={0x2, 0x22}, @generic={0x2, 0x2}]}}, {{0x9, 0x5, 0xc, 0x4, 0x3ff, 0x5, 0x40, 0x45, [@uac_iso={0x7, 0x25, 0x1, 0x2, 0x1, 0x1}]}}, {{0x9, 0x5, 0x0, 0x1, 0x400, 0x0, 0x33, 0x4, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x4}]}}, {{0x9, 0x5, 0xf, 0x1, 0x0, 0x0, 0x4, 0x9, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x80, 0x1}, @generic={0x2, 0xa}]}}]}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x1d3, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1c1, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0xb, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}, [@mdlm_detail={0x4, 0x24, 0x13, 0xf9}, @acm={0x4, 0x24, 0x2, 0x2}, @dmm={0x7, 0x24, 0x14, 0x0, 0x4}]}], [{{0x9, 0x5, 0x6, 0x0, 0x40, 0x11, 0xf, 0x3, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x3, 0xc, 0x10, 0x4, 0xc, 0xb}}, {{0x9, 0x5, 0x3, 0x0, 0x40, 0x1, 0xf, 0x7}}, {{0x9, 0x5, 0x8, 0x0, 0x8, 0x7, 0x0, 0x7, [@generic={0x2, 0x11}, @uac_iso={0x7, 0x25, 0x1, 0x3, 0x9b, 0x9}]}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x92, 0xb, 0x6, [@generic={0x2, 0xe}]}}, {{0x9, 0x5, 0x2, 0xcf3bef43991b8545, 0x200, 0xd, 0x40}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x99, 0x28, 0x0, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0x8}, @uac_iso={0x7, 0x25, 0x1, 0x1, 0x4, 0x6}]}}, {{0x9, 0x5, 0xd, 0x0, 0x10, 0x80, 0x3, 0x2, [@generic={0x2, 0x7}, @generic={0x2, 0x20}]}}, {{0x9, 0x5, 0xd, 0x8, 0x8, 0x38, 0xfe, 0x9}}, {{0x9, 0x5, 0x1, 0x0, 0x20, 0x22, 0xd, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x1, 0xd, 0xf}, @generic={0x2, 0x5}]}}, {{0x9, 0x5, 0xf, 0x8, 0x400, 0xf, 0x40, 0x6}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x1c4, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x1b2, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0xb, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}], [{{0x9, 0x5, 0x6, 0x0, 0x40, 0x11, 0xf, 0x3, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0x3, 0xc, 0x10, 0x4, 0xc, 0xb}}, {{0x9, 0x5, 0x3, 0x0, 0x40, 0x1, 0xf, 0x7}}, {{0x9, 0x5, 0x8, 0x0, 0x8, 0x7, 0x0, 0x7, [@generic={0x2, 0x11}, @uac_iso={0x7, 0x25, 0x1, 0x3, 0x9b, 0x9}]}}, {{0x9, 0x5, 0xe, 0x0, 0x20, 0x92, 0xb, 0x6, [@generic={0x2, 0xe}]}}, {{0x9, 0x5, 0x2, 0xcf3bef43991b8545, 0x200, 0xd, 0x40}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x99, 0x28, 0x0, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0x8}, @uac_iso={0x7, 0x25, 0x1, 0x1, 0x4, 0x6}]}}, {{0x9, 0x5, 0xd, 0x0, 0x10, 0x80, 0x3, 0x2, [@generic={0x2, 0x7}, @generic={0x2, 0x20}]}}, {{0x9, 0x5, 0xd, 0x8, 0x8, 0x38, 0xfe, 0x9}}, {{0x9, 0x5, 0x1, 0x0, 0x20, 0x22, 0xd, 0xe, [@uac_iso={0x7, 0x25, 0x1, 0x1, 0xd, 0xf}, @generic={0x2, 0x5}]}}, {{0x9, 0x5, 0xf, 0x8, 0x400, 0xf, 0x40, 0x6}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x139, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x127, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}, [@obex={0x5, 0x24, 0x15, 0x7}, @dmm={0x7, 0x24, 0x14, 0xb, 0x9}, @mbim_extended={0x8, 0x24, 0x1c, 0x8, 0xcd, 0x4e3}]}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0x0, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x125, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x113, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0xf, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}}], [{{0x9, 0x5, 0xc, 0x10, 0x0, 0xf8, 0x9, 0x7}}, {{0x9, 0x5, 0x8, 0x2, 0x20, 0x0, 0xb, 0xc9, [@uac_iso={0x7, 0x25, 0x1, 0x3, 0x81, 0xebb8}]}}, {{0x9, 0x5, 0xa, 0x0, 0x20, 0xef, 0x9, 0x8}}, {{0x9, 0x5, 0x9, 0x10, 0x3bf, 0x1, 0x4, 0x2}}, {{0x9, 0x5, 0xa, 0xc, 0x400, 0x8, 0x10, 0x9, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x4ce12af02eac2600, 0x0, 0x200, 0xb, 0x1, 0x6, [@uac_iso={0x7, 0x25, 0x1, 0x4, 0x3, 0x7fff}]}}, {{0x9, 0x5, 0x8, 0x3, 0x8, 0x0, 0x8, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x82, 0x5, 0x1}]}}, {{0x9, 0x5, 0x9, 0xc, 0x10, 0x6, 0x1, 0x2}}, {{0x9, 0x5, 0x0, 0x2, 0x20, 0xa, 0x1, 0xf6}}, {{0x9, 0x5, 0x7, 0x1, 0x20, 0x1, 0x6, 0x87, [@generic={0x2, 0x23}]}}, {{0x9, 0x5, 0xe, 0x10, 0x1bb, 0xc5, 0x5, 0x2, [@generic={0x2, 0xa}]}}, {{0x9, 0x5, 0x8, 0x2, 0x200, 0xe, 0x4, 0x3, [@uac_iso={0x7, 0x25, 0x1, 0x81, 0x4, 0x1}]}}, {{0x9, 0x5, 0x0, 0x10, 0x3ff, 0xc6, 0x73, 0x8, [@generic={0x2, 0x4}]}}, {{0x9, 0x5, 0xe, 0x7, 0x40, 0x9, 0x7, 0x80, [@uac_iso={0x7, 0x25, 0x1, 0x0, 0x7}]}}, {{0x9, 0x5, 0x3, 0x4, 0x10, 0xf, 0x8d, 0x81}}]}}, {{0x9, 0x4, 0x0, 0x1, 0x0, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x73, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x61, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0x0, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}}]}}, {{0x9, 0x4, 0x0, 0x1, 0x0, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0, 0x6, [{0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}, {0x0, 0x0}]})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x73, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x61, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0x0, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}}]}}, {{0x9, 0x4, 0x0, 0x1, 0x0, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, 0x0)

program did not crash
testing program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x73, &(0x7f0000000380)={{0x12, 0x1, 0x300, 0xb2, 0x55, 0xfa, 0x8, 0x424, 0xc001, 0x1c8f, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x61, 0x4, 0x0, 0x1, 0x20, 0x6, [{{0x9, 0x4, 0xc7, 0xe, 0x0, 0xed, 0x77, 0x6, 0x2, [@uac_as, @cdc_ncm={{0x5}, {0x5}, {0xd, 0x24, 0xf, 0x1, 0x9a, 0x9a9, 0x4, 0x6}, {0x6, 0x24, 0x1a, 0x0, 0x2}}]}}, {{0x9, 0x4, 0x0, 0x1, 0x0, 0x75, 0xec, 0x4f, 0x5, [@cdc_ecm={{0x5}, {0x5, 0x24, 0x0, 0x7}, {0xd, 0x24, 0xf, 0x1, 0xc0, 0x134, 0xa3f, 0x2}}]}}, {{0x9, 0x4, 0x36, 0xa, 0x0, 0x7, 0x60, 0xb9}}, {{0x9, 0x4, 0x6c, 0x8, 0x0, 0xff, 0x4, 0x7a, 0x1f}}]}}]}}, &(0x7f0000001180)={0x0, 0x0, 0x0, 0x0})

program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
extracting C reproducer
testing compiled C program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
simplifying C reproducer
testing compiled C program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program did not crash
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
testing compiled C program (duration=53.821638898s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect
program crashed: KASAN: slab-use-after-free Read in hdm_disconnect
reproducing took 32m40.49238534s
repro crashed as (corrupted=false):
usb 1-1: SerialNumber: syz
usb 1-1: config 0 descriptor??
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in hdm_disconnect+0xf8/0x190 drivers/most/most_usb.c:1125
Read of size 8 at addr ffff0000dc3558a8 by task kworker/1:1/28

CPU: 1 UID: 0 PID: 28 Comm: kworker/1:1 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x198/0x550 mm/kasan/report.c:521
 kasan_report+0xd8/0x138 mm/kasan/report.c:634
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 hdm_disconnect+0xf8/0x190 drivers/most/most_usb.c:1125
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Allocated by task 28:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x2cc/0x428 mm/slub.c:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 hdm_probe+0xa4/0x1044 drivers/most/most_usb.c:959
 usb_probe_interface+0x598/0xa40 drivers/usb/core/driver.c:396
 really_probe+0x38c/0x8fc drivers/base/dd.c:658
 __driver_probe_device+0x194/0x374 drivers/base/dd.c:800
 driver_probe_device+0x78/0x330 drivers/base/dd.c:830
 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:958
 bus_for_each_drv+0x228/0x2bc drivers/base/bus.c:462
 __device_attach+0x2b4/0x434 drivers/base/dd.c:1030
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1079
 bus_probe_device+0x178/0x240 drivers/base/bus.c:537
 device_add+0x728/0xa6c drivers/base/core.c:3666
 usb_set_configuration+0x15cc/0x1b38 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8c/0x148 drivers/usb/core/generic.c:250
 usb_probe_device+0x1a4/0x348 drivers/usb/core/driver.c:291
 really_probe+0x38c/0x8fc drivers/base/dd.c:658
 __driver_probe_device+0x194/0x374 drivers/base/dd.c:800
 driver_probe_device+0x78/0x330 drivers/base/dd.c:830
 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:958
 bus_for_each_drv+0x228/0x2bc drivers/base/bus.c:462
 __device_attach+0x2b4/0x434 drivers/base/dd.c:1030
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1079
 bus_probe_device+0x178/0x240 drivers/base/bus.c:537
 device_add+0x728/0xa6c drivers/base/core.c:3666
 usb_new_device+0x908/0x14ac drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5533 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x2454/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Freed by task 28:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x64/0x8c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x180/0x478 mm/slub.c:4757
 release_mdev+0x20/0x30 drivers/most/most_usb.c:932
 device_release+0x8c/0x1ac
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2a8/0x41c lib/kobject.c:737
 put_device drivers/base/core.c:3774 [inline]
 device_unregister+0x3c/0xcc drivers/base/core.c:3897
 most_deregister_interface+0x3e0/0x42c drivers/most/core.c:1402
 hdm_disconnect+0xe0/0x190 drivers/most/most_usb.c:1123
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

The buggy address belongs to the object at ffff0000dc354000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 6312 bytes inside of
 freed 8192-byte region [ffff0000dc354000, ffff0000dc356000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11c350
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c0002280 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 05ffc00000000040 ffff0000c0002280 dead000000000122 0000000000000000
head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 05ffc00000000003 fffffdffc370d401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000dc355780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000dc355800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000dc355880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff0000dc355900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000dc355980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 28 at lib/refcount.c:28 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
Modules linked in:
CPU: 1 UID: 0 PID: 28 Comm: kworker/1:1 Tainted: G    B              6.14.0-rc7-syzkaller-ga2392f333575 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
lr : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
sp : ffff800097e57200
x29: ffff800097e57200 x28: 0000000000000000 x27: ffff0000d91b9000
x26: 1fffe0001b86a807 x25: dfff800000000000 x24: ffff8000927afb10
x23: 1fffe0001b86a8a1 x22: ffff0000dc35403c x21: 0000000000000003
x20: ffff0000dc354038 x19: ffff800092f0b000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008b7285ac x15: ffff700011f87b50
x14: 1ffff00011f87b50 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000000002 x10: 0000000000ff0100 x9 : 31ef428a8b9ab100
x8 : 31ef428a8b9ab100 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800097e569b8 x4 : ffff80008fcafb00 x3 : ffff8000804a79e8
x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 (P)
 __refcount_sub_and_test include/linux/refcount.h:275 [inline]
 __refcount_dec_and_test include/linux/refcount.h:307 [inline]
 refcount_dec_and_test include/linux/refcount.h:325 [inline]
 kref_put include/linux/kref.h:64 [inline]
 kobject_put+0x1a0/0x41c lib/kobject.c:737
 put_device+0x28/0x40 drivers/base/core.c:3774
 hdm_disconnect+0x178/0x190 drivers/most/most_usb.c:1130
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 40221
hardirqs last  enabled at (40221): [<ffff8000803d5a40>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1533 [inline]
hardirqs last  enabled at (40221): [<ffff8000803d5a40>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5132
hardirqs last disabled at (40220): [<ffff80008b7d1df0>] __schedule+0x2bc/0x257c kernel/sched/core.c:6668
softirqs last  enabled at (35894): [<ffff8000803128a4>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (35894): [<ffff8000803128a4>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589
softirqs last disabled at (35877): [<ffff800080020dbc>] __do_softirq+0x14/0x20 kernel/softirq.c:595
---[ end trace 0000000000000000 ]---

final repro crashed as (corrupted=false):
usb 1-1: SerialNumber: syz
usb 1-1: config 0 descriptor??
usb 1-1: USB disconnect, device number 2
==================================================================
BUG: KASAN: slab-use-after-free in hdm_disconnect+0xf8/0x190 drivers/most/most_usb.c:1125
Read of size 8 at addr ffff0000dc3558a8 by task kworker/1:1/28

CPU: 1 UID: 0 PID: 28 Comm: kworker/1:1 Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0x198/0x550 mm/kasan/report.c:521
 kasan_report+0xd8/0x138 mm/kasan/report.c:634
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 hdm_disconnect+0xf8/0x190 drivers/most/most_usb.c:1125
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Allocated by task 28:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:562
 poison_kmalloc_redzone mm/kasan/common.c:377 [inline]
 __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:394
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __kmalloc_cache_noprof+0x2cc/0x428 mm/slub.c:4325
 kmalloc_noprof include/linux/slab.h:901 [inline]
 kzalloc_noprof include/linux/slab.h:1037 [inline]
 hdm_probe+0xa4/0x1044 drivers/most/most_usb.c:959
 usb_probe_interface+0x598/0xa40 drivers/usb/core/driver.c:396
 really_probe+0x38c/0x8fc drivers/base/dd.c:658
 __driver_probe_device+0x194/0x374 drivers/base/dd.c:800
 driver_probe_device+0x78/0x330 drivers/base/dd.c:830
 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:958
 bus_for_each_drv+0x228/0x2bc drivers/base/bus.c:462
 __device_attach+0x2b4/0x434 drivers/base/dd.c:1030
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1079
 bus_probe_device+0x178/0x240 drivers/base/bus.c:537
 device_add+0x728/0xa6c drivers/base/core.c:3666
 usb_set_configuration+0x15cc/0x1b38 drivers/usb/core/message.c:2210
 usb_generic_driver_probe+0x8c/0x148 drivers/usb/core/generic.c:250
 usb_probe_device+0x1a4/0x348 drivers/usb/core/driver.c:291
 really_probe+0x38c/0x8fc drivers/base/dd.c:658
 __driver_probe_device+0x194/0x374 drivers/base/dd.c:800
 driver_probe_device+0x78/0x330 drivers/base/dd.c:830
 __device_attach_driver+0x2a8/0x4f4 drivers/base/dd.c:958
 bus_for_each_drv+0x228/0x2bc drivers/base/bus.c:462
 __device_attach+0x2b4/0x434 drivers/base/dd.c:1030
 device_initial_probe+0x24/0x34 drivers/base/dd.c:1079
 bus_probe_device+0x178/0x240 drivers/base/bus.c:537
 device_add+0x728/0xa6c drivers/base/core.c:3666
 usb_new_device+0x908/0x14ac drivers/usb/core/hub.c:2663
 hub_port_connect drivers/usb/core/hub.c:5533 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x2454/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

Freed by task 28:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:576
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x64/0x8c mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4609 [inline]
 kfree+0x180/0x478 mm/slub.c:4757
 release_mdev+0x20/0x30 drivers/most/most_usb.c:932
 device_release+0x8c/0x1ac
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2a8/0x41c lib/kobject.c:737
 put_device drivers/base/core.c:3774 [inline]
 device_unregister+0x3c/0xcc drivers/base/core.c:3897
 most_deregister_interface+0x3e0/0x42c drivers/most/core.c:1402
 hdm_disconnect+0xe0/0x190 drivers/most/most_usb.c:1123
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862

The buggy address belongs to the object at ffff0000dc354000
 which belongs to the cache kmalloc-8k of size 8192
The buggy address is located 6312 bytes inside of
 freed 8192-byte region [ffff0000dc354000, ffff0000dc356000)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11c350
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c0002280 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 05ffc00000000040 ffff0000c0002280 dead000000000122 0000000000000000
head: 0000000000000000 0000000000020002 00000000f5000000 0000000000000000
head: 05ffc00000000003 fffffdffc370d401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000dc355780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000dc355800: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000dc355880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                  ^
 ffff0000dc355900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000dc355980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
------------[ cut here ]------------
refcount_t: underflow; use-after-free.
WARNING: CPU: 1 PID: 28 at lib/refcount.c:28 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
Modules linked in:
CPU: 1 UID: 0 PID: 28 Comm: kworker/1:1 Tainted: G    B              6.14.0-rc7-syzkaller-ga2392f333575 #0
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: usb_hub_wq hub_event
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
lr : refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28
sp : ffff800097e57200
x29: ffff800097e57200 x28: 0000000000000000 x27: ffff0000d91b9000
x26: 1fffe0001b86a807 x25: dfff800000000000 x24: ffff8000927afb10
x23: 1fffe0001b86a8a1 x22: ffff0000dc35403c x21: 0000000000000003
x20: ffff0000dc354038 x19: ffff800092f0b000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008b7285ac x15: ffff700011f87b50
x14: 1ffff00011f87b50 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000000002 x10: 0000000000ff0100 x9 : 31ef428a8b9ab100
x8 : 31ef428a8b9ab100 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800097e569b8 x4 : ffff80008fcafb00 x3 : ffff8000804a79e8
x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000
Call trace:
 refcount_warn_saturate+0x1c8/0x20c lib/refcount.c:28 (P)
 __refcount_sub_and_test include/linux/refcount.h:275 [inline]
 __refcount_dec_and_test include/linux/refcount.h:307 [inline]
 refcount_dec_and_test include/linux/refcount.h:325 [inline]
 kref_put include/linux/kref.h:64 [inline]
 kobject_put+0x1a0/0x41c lib/kobject.c:737
 put_device+0x28/0x40 drivers/base/core.c:3774
 hdm_disconnect+0x178/0x190 drivers/most/most_usb.c:1130
 usb_unbind_interface+0x22c/0x7ec drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x440/0x698 drivers/base/dd.c:1296
 device_release_driver+0x28/0x38 drivers/base/dd.c:1319
 bus_remove_device+0x314/0x3b4 drivers/base/bus.c:579
 device_del+0x480/0x828 drivers/base/core.c:3855
 usb_disable_device+0x354/0x760 drivers/usb/core/message.c:1418
 usb_disconnect+0x290/0x808 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5373 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5673 [inline]
 port_event drivers/usb/core/hub.c:5833 [inline]
 hub_event+0x1918/0x4280 drivers/usb/core/hub.c:5915
 process_one_work+0x810/0x1638 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x9b4/0xeec kernel/workqueue.c:3400
 kthread+0x65c/0x7b0 kernel/kthread.c:464
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:862
irq event stamp: 40221
hardirqs last  enabled at (40221): [<ffff8000803d5a40>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1533 [inline]
hardirqs last  enabled at (40221): [<ffff8000803d5a40>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5132
hardirqs last disabled at (40220): [<ffff80008b7d1df0>] __schedule+0x2bc/0x257c kernel/sched/core.c:6668
softirqs last  enabled at (35894): [<ffff8000803128a4>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (35894): [<ffff8000803128a4>] handle_softirqs+0xb44/0xd34 kernel/softirq.c:589
softirqs last disabled at (35877): [<ffff800080020dbc>] __do_softirq+0x14/0x20 kernel/softirq.c:595
---[ end trace 0000000000000000 ]---