Extracting prog: 1m48.612284144s
Minimizing prog: 10m41.511312158s
Simplifying prog options: 2m38.798597318s
Extracting C: 22.702917418s
Simplifying C: 0s
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: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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program crashed: general protection fault in set_link_state
single: successfully extracted reproducer
found reproducer with 5 syscalls
minimizing guilty program
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
write(0xffffffffffffffff, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-mount-openat-write
detailed listing:
executing program 0:
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x0, 0x0, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, 0x0, 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, 0x0, &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', 0x0, 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, 0x0, 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, 0x0, 0x0)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200), 0x0)
program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
extracting C reproducer
testing compiled C program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
program crashed: general protection fault in dummy_udc_start
a never seen crash title: general protection fault in dummy_udc_start, ignore
simplifying guilty program options
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {Threaded:true 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program crashed: general protection fault in set_link_state
validation run: crashed=true
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program crashed: general protection fault in set_link_state
validation run: crashed=true
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program did not crash
validation run: crashed=false
testing program (duration=42.904469472s, {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:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect-mkdirat-mount-openat-write
detailed listing:
executing program 0:
syz_usb_connect(0x0, 0x24, &(0x7f00000010c0)={{0x12, 0x1, 0x110, 0xfe, 0x68, 0x2b, 0x20, 0x46d, 0x890, 0xee6e, 0x1, 0x2, 0x3, 0x1, [{{0x9, 0x2, 0x12, 0x1, 0x8, 0xa, 0x40, 0x8, "", [{{0x9, 0x4, 0xca, 0x4, 0x0, 0x2, 0x6, 0x0, 0x4}}]}}]}}, 0x0)
mkdirat(0xffffffffffffff9c, &(0x7f0000000000)='./mysys\x00', 0x1ff)
mount(0x0, &(0x7f0000000080)='./mysys\x00', &(0x7f00000000c0)='sysfs\x00', 0x0, 0x0)
r0 = openat(0xffffffffffffff9c, &(0x7f0000000100)='./mysys/bus/platform/drivers/dummy_hcd/unbind\x00', 0x1, 0x0)
write(r0, &(0x7f0000000200)='dummy_hcd.0', 0xb)
program crashed: general protection fault in set_link_state
validation run: crashed=true
reproducing took 23m36.607272186s
repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 412 Comm: syz.0.17 Not tainted syzkaller #0 0b31bef96cff8e44f9e14c4f768eb06c85e3b290
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:set_link_state+0x2a/0x1240 drivers/usb/gadget/udc/dummy_hcd.c:435
Code: 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 60 49 89 fd 48 bb 00 00 00 00 00 fc ff df e8 dd 01 ce fd 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 b8 c4 26 fe 4d 8b 75 00 49 8d 95 93
RSP: 0018:ffffc90000eef718 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ef1300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000eef7a0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001ddee0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881062d4000
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6e0e0e90 CR3: 000000010c38a000 CR4: 00000000003526b0
Call Trace:
dummy_pullup+0xd1/0x130 drivers/usb/gadget/udc/dummy_hcd.c:914
usb_gadget_disconnect_locked+0x151/0x400 drivers/usb/gadget/udc/core.c:780
gadget_unbind_driver+0xaf/0x3f0 drivers/usb/gadget/udc/core.c:1670
device_remove drivers/base/dd.c:567 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4ad/0x830 drivers/base/dd.c:1295
driver_detach+0x1f5/0x2d0 drivers/base/dd.c:1358
bus_remove_driver+0x254/0x2b0 drivers/base/bus.c:744
driver_unregister+0x79/0xb0 drivers/base/driver.c:274
usb_gadget_unregister_driver+0x52/0x80 drivers/usb/gadget/udc/core.c:1736
raw_release+0xdb/0x280 drivers/usb/gadget/legacy/raw_gadget.c:463
__fput+0x208/0xa30 fs/file_table.c:447
____fput+0x20/0x30 fs/file_table.c:475
task_work_run+0x1e8/0x260 kernel/task_work.c:246
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xa46/0x2850 kernel/exit.c:955
do_group_exit+0x21f/0x2f0 kernel/exit.c:1098
get_signal+0x134c/0x1490 kernel/signal.c:2933
arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x57/0xb0 kernel/entry/common.c:218
do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa255b9df99
Code: Unable to access opcode bytes at 0x7fa255b9df6f.
RSP: 002b:00007fa256a9a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: 000000000000000b RBX: 00007fa255e25fa0 RCX: 00007fa255b9df99
RDX: 000000000000000b RSI: 0000200000000200 RDI: 0000000000000004
RBP: 00007fa255c34ec4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa255e26038 R14: 00007fa255e25fa0 R15: 00007ffd09c10fd8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:set_link_state+0x2a/0x1240 drivers/usb/gadget/udc/dummy_hcd.c:435
Code: 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 60 49 89 fd 48 bb 00 00 00 00 00 fc ff df e8 dd 01 ce fd 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 b8 c4 26 fe 4d 8b 75 00 49 8d 95 93
RSP: 0018:ffffc90000eef718 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ef1300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000eef7a0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001ddee0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881062d4000
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6e0e0e90 CR3: 000000010c38a000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 55 push %rbp
1: 48 89 e5 mov %rsp,%rbp
4: 41 57 push %r15
6: 41 56 push %r14
8: 41 55 push %r13
a: 41 54 push %r12
c: 53 push %rbx
d: 48 83 ec 60 sub $0x60,%rsp
11: 49 89 fd mov %rdi,%r13
14: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx
1b: fc ff df
1e: e8 dd 01 ce fd call 0xfdce0200
23: 4c 89 e8 mov %r13,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ef mov %r13,%rdi
33: e8 b8 c4 26 fe call 0xfe26c4f0
38: 4d 8b 75 00 mov 0x0(%r13),%r14
3c: 49 rex.WB
3d: 8d .byte 0x8d
3e: 95 xchg %eax,%ebp
3f: 93 xchg %eax,%ebx
final repro crashed as (corrupted=false):
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 412 Comm: syz.0.17 Not tainted syzkaller #0 0b31bef96cff8e44f9e14c4f768eb06c85e3b290
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:set_link_state+0x2a/0x1240 drivers/usb/gadget/udc/dummy_hcd.c:435
Code: 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 60 49 89 fd 48 bb 00 00 00 00 00 fc ff df e8 dd 01 ce fd 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 b8 c4 26 fe 4d 8b 75 00 49 8d 95 93
RSP: 0018:ffffc90000eef718 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ef1300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000eef7a0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001ddee0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881062d4000
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6e0e0e90 CR3: 000000010c38a000 CR4: 00000000003526b0
Call Trace:
dummy_pullup+0xd1/0x130 drivers/usb/gadget/udc/dummy_hcd.c:914
usb_gadget_disconnect_locked+0x151/0x400 drivers/usb/gadget/udc/core.c:780
gadget_unbind_driver+0xaf/0x3f0 drivers/usb/gadget/udc/core.c:1670
device_remove drivers/base/dd.c:567 [inline]
__device_release_driver drivers/base/dd.c:1272 [inline]
device_release_driver_internal+0x4ad/0x830 drivers/base/dd.c:1295
driver_detach+0x1f5/0x2d0 drivers/base/dd.c:1358
bus_remove_driver+0x254/0x2b0 drivers/base/bus.c:744
driver_unregister+0x79/0xb0 drivers/base/driver.c:274
usb_gadget_unregister_driver+0x52/0x80 drivers/usb/gadget/udc/core.c:1736
raw_release+0xdb/0x280 drivers/usb/gadget/legacy/raw_gadget.c:463
__fput+0x208/0xa30 fs/file_table.c:447
____fput+0x20/0x30 fs/file_table.c:475
task_work_run+0x1e8/0x260 kernel/task_work.c:246
exit_task_work include/linux/task_work.h:43 [inline]
do_exit+0xa46/0x2850 kernel/exit.c:955
do_group_exit+0x21f/0x2f0 kernel/exit.c:1098
get_signal+0x134c/0x1490 kernel/signal.c:2933
arch_do_signal_or_restart+0xbc/0x700 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x57/0xb0 kernel/entry/common.c:218
do_syscall_64+0x63/0xf0 arch/x86/entry/common.c:84
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7fa255b9df99
Code: Unable to access opcode bytes at 0x7fa255b9df6f.
RSP: 002b:00007fa256a9a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: 000000000000000b RBX: 00007fa255e25fa0 RCX: 00007fa255b9df99
RDX: 000000000000000b RSI: 0000200000000200 RDI: 0000000000000004
RBP: 00007fa255c34ec4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa255e26038 R14: 00007fa255e25fa0 R15: 00007ffd09c10fd8
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:set_link_state+0x2a/0x1240 drivers/usb/gadget/udc/dummy_hcd.c:435
Code: 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 60 49 89 fd 48 bb 00 00 00 00 00 fc ff df e8 dd 01 ce fd 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 ef e8 b8 c4 26 fe 4d 8b 75 00 49 8d 95 93
RSP: 0018:ffffc90000eef718 EFLAGS: 00010046
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffff888117ef1300
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000eef7a0 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520001ddee0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffff8881062d4000
FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe6e0e0e90 CR3: 000000010c38a000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 55 push %rbp
1: 48 89 e5 mov %rsp,%rbp
4: 41 57 push %r15
6: 41 56 push %r14
8: 41 55 push %r13
a: 41 54 push %r12
c: 53 push %rbx
d: 48 83 ec 60 sub $0x60,%rsp
11: 49 89 fd mov %rdi,%r13
14: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx
1b: fc ff df
1e: e8 dd 01 ce fd call 0xfdce0200
23: 4c 89 e8 mov %r13,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 4c 89 ef mov %r13,%rdi
33: e8 b8 c4 26 fe call 0xfe26c4f0
38: 4d 8b 75 00 mov 0x0(%r13),%r14
3c: 49 rex.WB
3d: 8d .byte 0x8d
3e: 95 xchg %eax,%ebp
3f: 93 xchg %eax,%ebx