Extracting prog: 3m12.949117737s Minimizing prog: 1h25m2.34823158s Simplifying prog options: 0s Extracting C: 29.672207631s Simplifying C: 16m3.980126535s 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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups single: successfully extracted reproducer found reproducer with 7 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) socket$l2tp(0x2, 0x2, 0x73) r0 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r0, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r1, 0xc0145b0e, &(0x7f0000000040)) (async) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) syz_open_dev$char_usb(0xc, 0xb4, 0x0) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) ioctl$FS_IOC_GETVERSION(0xffffffffffffffff, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r1, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) syz_usb_control_io(0xffffffffffffffff, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r1, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r0, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r1 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r1, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, 0x0) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, 0x0, 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB, @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, 0x0) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, 0x0) (async) close_range(r0, 0xffffffffffffffff, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$EVIOCGRAB-socket$l2tp-syz_usb_connect-syz_usb_control_io-syz_open_dev$char_usb-ioctl$FS_IOC_GETVERSION-close_range detailed listing: executing program 0: ioctl$EVIOCGRAB(0xffffffffffffffff, 0x40044590, &(0x7f0000000040)=0x80) r0 = socket$l2tp(0x2, 0x2, 0x73) r1 = syz_usb_connect(0x0, 0x3f, &(0x7f0000002000)=ANY=[@ANYBLOB="11010000733336088dee1adb23610000000109022d0001100000000904000003fe03010009cd8d1f000200000009050502000000001009058b1e", @ANYRESDEC=0x0], 0x0) syz_usb_control_io(r1, 0x0, &(0x7f0000000300)={0x84, &(0x7f0000001a80)=ANY=[], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}) r2 = syz_open_dev$char_usb(0xc, 0xb4, 0x0) ioctl$FS_IOC_GETVERSION(r2, 0xc0145b0e, &(0x7f0000000040)) (async) close_range(r0, 0xffffffffffffffff, 0x0) program crashed: KASAN: use-after-free Write in usb_anchor_suspend_wakeups validation run: crashed=true reproducing took 1h53m56.559490433s repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline] BUG: KASAN: use-after-free in atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline] BUG: KASAN: use-after-free in usb_anchor_suspend_wakeups+0x2c/0x74 drivers/usb/core/urb.c:942 Write of size 4 at addr ffff0000dbb0b910 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0x100 mm/kasan/report.c:524 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x260/0x2a0 mm/kasan/generic.c:189 __kasan_check_write+0x2c/0x3c mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:102 [inline] atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline] usb_anchor_suspend_wakeups+0x2c/0x74 drivers/usb/core/urb.c:942 __usb_hcd_giveback_urb+0x1f4/0x504 drivers/usb/core/hcd.c:1662 usb_hcd_giveback_urb+0x100/0x3c0 drivers/usb/core/hcd.c:1758 dummy_timer+0x61c/0x249c drivers/usb/gadget/udc/dummy_hcd.c:1994 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x44c/0xc64 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1828 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xdc kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4bc kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:733 start_kernel+0x0/0x554 init/main.c:893 start_kernel+0x4a4/0x554 init/main.c:1140 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 Allocated by task 6642: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x7c/0x94 mm/slab_common.c:1031 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] usbtmc_open+0xa8/0x78c drivers/usb/class/usbtmc.c:175 usb_open+0x1c4/0x2c4 drivers/usb/core/file.c:48 chrdev_open+0x26c/0x4f0 fs/char_dev.c:414 do_dentry_open+0x730/0xfa8 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3626 [inline] path_openat+0x1f48/0x2680 fs/namei.c:3783 do_filp_open+0x174/0x344 fs/namei.c:3810 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Freed by task 6642: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x3c/0x60 mm/kasan/generic.c:516 ____kasan_slab_free+0x148/0x1b0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x16c/0x1ec mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xc0/0x224 mm/slub.c:3700 kfree+0xd0/0x1ac mm/slab_common.c:988 usbtmc_release+0x238/0x298 drivers/usb/class/usbtmc.c:261 __fput+0x1bc/0x7c0 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x270 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000dbb0b800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 272 bytes inside of 1024-byte region [ffff0000dbb0b800, ffff0000dbb0bc00) The buggy address belongs to the physical page: page:00000000f8424965 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11bb08 head:00000000f8424965 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 dead000000000100 dead000000000122 ffff0000c0002780 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000dbb0b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dbb0b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000dbb0b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000dbb0b980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dbb0ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Unable to handle kernel paging request at virtual address dfff800000000012 KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000012] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : dev_driver_string drivers/base/core.c:2357 [inline] pc : __dev_printk+0x70/0x1a0 drivers/base/core.c:4957 lr : __dev_printk+0x2c/0x1a0 drivers/base/core.c:4954 sp : ffff800008007770 x29: ffff800008007770 x28: dfff800000000000 x27: 1fffe0001871e948 x26: 1fffe0001b761700 x25: 0000000000000033 x24: dfff800000000000 x23: ffff800008007800 x22: 0000000000000097 x21: ffff8000129a7e41 x20: 000000000000002f x19: ffff800008007820 x18: ffff800011abbcc0 x17: 0000000000000000 x16: ffff8000082e7b1c x15: 0000000000000000 x14: 00000000ffffff98 x13: 0000000000ff0100 x12: 0000000000ff0100 x11: ff0080000be92268 x10: 0000000000000000 x9 : 0000000000000001 x8 : 0000000000000012 x7 : 0000000000000000 x6 : ffff8000084a2290 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020 x2 : ffff800008007820 x1 : 000000000000002f x0 : ffff8000129a7e40 Call trace: dev_driver_string drivers/base/core.c:2357 [inline] __dev_printk+0x70/0x1a0 drivers/base/core.c:4957 _dev_err+0xec/0x138 drivers/base/core.c:4999 usbtmc_read_bulk_cb+0x214/0x394 drivers/usb/class/usbtmc.c:787 __usb_hcd_giveback_urb+0x2e0/0x504 drivers/usb/core/hcd.c:1675 usb_hcd_giveback_urb+0x100/0x3c0 drivers/usb/core/hcd.c:1758 dummy_timer+0x61c/0x249c drivers/usb/gadget/udc/dummy_hcd.c:1994 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x44c/0xc64 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1828 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xdc kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4bc kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:733 start_kernel+0x0/0x554 init/main.c:893 start_kernel+0x4a4/0x554 init/main.c:1140 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 Code: 35000948 9101a296 394002b9 d343fec8 (38786908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 35000948 cbnz w8, 0x128 4: 9101a296 add x22, x20, #0x68 8: 394002b9 ldrb w25, [x21] c: d343fec8 lsr x8, x22, #3 * 10: 38786908 ldrb w8, [x8, x24] <-- trapping instruction final repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline] BUG: KASAN: use-after-free in atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline] BUG: KASAN: use-after-free in usb_anchor_suspend_wakeups+0x2c/0x74 drivers/usb/core/urb.c:942 Write of size 4 at addr ffff0000dbb0b910 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf8/0x160 lib/dump_stack.c:106 print_address_description+0x88/0x218 mm/kasan/report.c:316 print_report+0x50/0x68 mm/kasan/report.c:420 kasan_report+0xa8/0x100 mm/kasan/report.c:524 check_region_inline mm/kasan/generic.c:-1 [inline] kasan_check_range+0x260/0x2a0 mm/kasan/generic.c:189 __kasan_check_write+0x2c/0x3c mm/kasan/shadow.c:37 instrument_atomic_read_write include/linux/instrumented.h:102 [inline] atomic_inc include/linux/atomic/atomic-instrumented.h:190 [inline] usb_anchor_suspend_wakeups+0x2c/0x74 drivers/usb/core/urb.c:942 __usb_hcd_giveback_urb+0x1f4/0x504 drivers/usb/core/hcd.c:1662 usb_hcd_giveback_urb+0x100/0x3c0 drivers/usb/core/hcd.c:1758 dummy_timer+0x61c/0x249c drivers/usb/gadget/udc/dummy_hcd.c:1994 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x44c/0xc64 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1828 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xdc kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4bc kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:733 start_kernel+0x0/0x554 init/main.c:893 start_kernel+0x4a4/0x554 init/main.c:1140 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 Allocated by task 6642: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x28/0x34 mm/kasan/generic.c:505 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0xa0/0xb8 mm/kasan/common.c:383 kasan_kmalloc include/linux/kasan.h:211 [inline] kmalloc_trace+0x7c/0x94 mm/slab_common.c:1031 kmalloc include/linux/slab.h:563 [inline] kzalloc include/linux/slab.h:699 [inline] usbtmc_open+0xa8/0x78c drivers/usb/class/usbtmc.c:175 usb_open+0x1c4/0x2c4 drivers/usb/core/file.c:48 chrdev_open+0x26c/0x4f0 fs/char_dev.c:414 do_dentry_open+0x730/0xfa8 fs/open.c:882 vfs_open+0x7c/0x90 fs/open.c:1013 do_open fs/namei.c:3626 [inline] path_openat+0x1f48/0x2680 fs/namei.c:3783 do_filp_open+0x174/0x344 fs/namei.c:3810 do_sys_openat2+0x128/0x3d8 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __arm64_sys_openat+0x120/0x154 fs/open.c:1345 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x138 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Freed by task 6642: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x3c/0x60 mm/kasan/generic.c:516 ____kasan_slab_free+0x148/0x1b0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:177 [inline] slab_free_hook mm/slub.c:1729 [inline] slab_free_freelist_hook+0x16c/0x1ec mm/slub.c:1755 slab_free mm/slub.c:3687 [inline] __kmem_cache_free+0xc0/0x224 mm/slub.c:3700 kfree+0xd0/0x1ac mm/slab_common.c:988 usbtmc_release+0x238/0x298 drivers/usb/class/usbtmc.c:261 __fput+0x1bc/0x7c0 fs/file_table.c:320 ____fput+0x20/0x30 fs/file_table.c:348 task_work_run+0x1ec/0x270 kernel/task_work.c:203 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x1f70/0x2b0c arch/arm64/kernel/signal.c:1137 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x98/0x138 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 The buggy address belongs to the object at ffff0000dbb0b800 which belongs to the cache kmalloc-1k of size 1024 The buggy address is located 272 bytes inside of 1024-byte region [ffff0000dbb0b800, ffff0000dbb0bc00) The buggy address belongs to the physical page: page:00000000f8424965 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11bb08 head:00000000f8424965 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 dead000000000100 dead000000000122 ffff0000c0002780 raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000dbb0b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dbb0b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000dbb0b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000dbb0b980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000dbb0ba00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== Unable to handle kernel paging request at virtual address dfff800000000012 KASAN: null-ptr-deref in range [0x0000000000000090-0x0000000000000097] Mem abort info: ESR = 0x0000000096000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x06: level 2 translation fault Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 [dfff800000000012] address between user and kernel address ranges Internal error: Oops: 0000000096000006 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025 pstate: 824000c5 (Nzcv daIF +PAN -UAO +TCO -DIT -SSBS BTYPE=--) pc : dev_driver_string drivers/base/core.c:2357 [inline] pc : __dev_printk+0x70/0x1a0 drivers/base/core.c:4957 lr : __dev_printk+0x2c/0x1a0 drivers/base/core.c:4954 sp : ffff800008007770 x29: ffff800008007770 x28: dfff800000000000 x27: 1fffe0001871e948 x26: 1fffe0001b761700 x25: 0000000000000033 x24: dfff800000000000 x23: ffff800008007800 x22: 0000000000000097 x21: ffff8000129a7e41 x20: 000000000000002f x19: ffff800008007820 x18: ffff800011abbcc0 x17: 0000000000000000 x16: ffff8000082e7b1c x15: 0000000000000000 x14: 00000000ffffff98 x13: 0000000000ff0100 x12: 0000000000ff0100 x11: ff0080000be92268 x10: 0000000000000000 x9 : 0000000000000001 x8 : 0000000000000012 x7 : 0000000000000000 x6 : ffff8000084a2290 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000020 x2 : ffff800008007820 x1 : 000000000000002f x0 : ffff8000129a7e40 Call trace: dev_driver_string drivers/base/core.c:2357 [inline] __dev_printk+0x70/0x1a0 drivers/base/core.c:4957 _dev_err+0xec/0x138 drivers/base/core.c:4999 usbtmc_read_bulk_cb+0x214/0x394 drivers/usb/class/usbtmc.c:787 __usb_hcd_giveback_urb+0x2e0/0x504 drivers/usb/core/hcd.c:1675 usb_hcd_giveback_urb+0x100/0x3c0 drivers/usb/core/hcd.c:1758 dummy_timer+0x61c/0x249c drivers/usb/gadget/udc/dummy_hcd.c:1994 __run_hrtimer kernel/time/hrtimer.c:1747 [inline] __hrtimer_run_queues+0x44c/0xc64 kernel/time/hrtimer.c:1811 hrtimer_run_softirq+0x160/0x400 kernel/time/hrtimer.c:1828 handle_softirqs+0x318/0xc6c kernel/softirq.c:596 __do_softirq+0x14/0x20 kernel/softirq.c:630 ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 call_on_irq_stack+0x30/0x48 arch/arm64/kernel/entry.S:897 do_softirq_own_stack+0x20/0x2c arch/arm64/kernel/irq.c:85 invoke_softirq kernel/softirq.c:477 [inline] __irq_exit_rcu+0x23c/0x43c kernel/softirq.c:679 irq_exit_rcu+0x14/0x84 kernel/softirq.c:691 __el1_irq arch/arm64/kernel/entry-common.c:472 [inline] el1_interrupt+0x38/0x54 arch/arm64/kernel/entry-common.c:486 el1h_64_irq_handler+0x18/0x24 arch/arm64/kernel/entry-common.c:491 el1h_64_irq+0x64/0x68 arch/arm64/kernel/entry.S:581 arch_local_irq_enable+0xc/0x18 arch/arm64/include/asm/irqflags.h:35 default_idle_call+0x68/0xdc kernel/sched/idle.c:109 cpuidle_idle_call kernel/sched/idle.c:191 [inline] do_idle+0x1d8/0x4bc kernel/sched/idle.c:303 cpu_startup_entry+0x5c/0x74 kernel/sched/idle.c:401 rest_init+0x2d4/0x2f0 init/main.c:733 start_kernel+0x0/0x554 init/main.c:893 start_kernel+0x4a4/0x554 init/main.c:1140 __primary_switched+0xb8/0xc0 arch/arm64/kernel/head.S:468 Code: 35000948 9101a296 394002b9 d343fec8 (38786908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: 35000948 cbnz w8, 0x128 4: 9101a296 add x22, x20, #0x68 8: 394002b9 ldrb w25, [x21] c: d343fec8 lsr x8, x22, #3 * 10: 38786908 ldrb w8, [x8, x24] <-- trapping instruction