Extracting prog: 1m41.001092921s Minimizing prog: 6m35.717348736s Simplifying prog options: 0s Extracting C: 33.396894365s Simplifying C: 4m57.847906139s extracting reproducer from 30 programs testing a last program of every proc single: executing 5 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: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}}): socket$nl_netfilter-pipe-mkdirat-mount-lstat-openat-setxattr$trusted_overlay_opaque-prlimit64-sched_setscheduler-getpid-sched_setaffinity-sched_setscheduler-mmap-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-mmap$IORING_OFF_SQ_RING-open-flock-open-open-flock-flock-flock detailed listing: executing program 0: socket$nl_netfilter(0x10, 0x3, 0xc) pipe(&(0x7f00000004c0)) mkdirat(0xffffffffffffff9c, &(0x7f0000000500)='./sys\x00', 0x1ff) mount(0x0, &(0x7f0000000000)='./sys\x00', &(0x7f0000000040)='cramfs\x00', 0x66820, 0x0) lstat(&(0x7f00000005c0)='./sys\x00', &(0x7f0000000600)) openat(0xffffffffffffff9c, 0x0, 0x1, 0x0) setxattr$trusted_overlay_opaque(&(0x7f00000006c0)='./sys\x00', 0x0, 0x0, 0x0, 0x0) prlimit64(0x0, 0xe, &(0x7f0000000700)={0xa, 0x8b}, 0x0) sched_setscheduler(0x0, 0x2, &(0x7f0000000740)=0x8) r0 = getpid() sched_setaffinity(0x0, 0x8, &(0x7f0000000780)=0x2) sched_setscheduler(r0, 0x2, &(0x7f00000007c0)=0x7) mmap(&(0x7f0000ffb000/0x3000)=nil, 0x3000, 0xb635773f06ebbee1, 0x12, 0xffffffffffffffff, 0xa50eb000) socketpair$unix(0x1, 0x2, 0x0, &(0x7f0000000a80)={0xffffffffffffffff, 0xffffffffffffffff}) connect$unix(r1, &(0x7f0000000ac0)=@abs={0x0, 0x0, 0x4e20}, 0x6e) sendmmsg$unix(r2, &(0x7f0000000b40), 0x651, 0x0) recvmmsg(r1, &(0x7f0000000b80), 0x10106, 0x2, 0x0) mmap$IORING_OFF_SQ_RING(0x110c230000, 0x8000002, 0x2000007, 0x401d031, 0xffffffffffffffff, 0x0) r3 = open(&(0x7f00000000c0)='.\x00', 0x0, 0x0) flock(r3, 0x2) r4 = open(&(0x7f0000000100)='.\x00', 0x30000, 0x3) r5 = open(&(0x7f0000000180)='.\x00', 0x100000, 0x2) flock(r5, 0x1) flock(r4, 0x1) flock(r3, 0x1) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program crashed: general protection fault in logi_dj_probe single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program 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: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$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program did not crash 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: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_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: syz_usb_control_io$hid(0xffffffffffffffff, 0x0, 0x0) syz_usb_control_io$hid(0xffffffffffffffff, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, 0x0, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, 0x0, 0x0}, 0x0) program did not crash 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB], 0x0}, 0x0) program did not crash extracting C reproducer testing compiled C 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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe simplifying C reproducer testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing compiled C program (duration=30s, {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: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$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid program crashed: general protection fault in logi_dj_probe testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program crashed: general protection fault in logi_dj_probe validation run: crashed=true testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program crashed: general protection fault in logi_dj_probe validation run: crashed=true testing program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io$hid detailed listing: executing program 0: r0 = syz_usb_connect$hid(0x0, 0x34, &(0x7f0000000180)=ANY=[@ANYBLOB="12010002000000406d042bc500240102000109022200010100a03209040000010300000009211101000122150007058103"], 0x0) syz_usb_control_io$hid(r0, 0x0, 0x0) syz_usb_control_io$hid(r0, &(0x7f00000006c0)={0x24, 0x0, 0x0, &(0x7f0000000700)=ANY=[@ANYBLOB="0022150000000600ff0901a10185201500260c017508910e8102c0"], 0x0}, 0x0) program crashed: general protection fault in logi_dj_probe validation run: crashed=true reproducing took 16m36.21142073s repro crashed as (corrupted=false): usb 3-1: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=24.00 usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 3-1: Product: syz usb 3-1: Manufacturer: syz general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 1 PID: 233 Comm: kworker/1:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:logi_dj_probe+0x66f/0xf40 drivers/hid/hid-logitech-dj.c:1803 Code: 3e c5 fd 49 83 c7 40 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3f dc 0a fe 4d 8b 37 49 83 c6 28 4c 89 f0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 a3 08 00 00 41 8b 0e 49 81 c5 e0 18 00 00 RSP: 0018:ffffc90000d36bc8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff888120c12880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d36c18 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520001a6c9c R12: 0000000000000000 R13: ffff888109438000 R14: 0000000000000028 R15: ffff888113c6a040 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8527c716a0 CR3: 000000012bdc8000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hid_device_probe+0x273/0x410 drivers/hid/hid-core.c:2694 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 hid_add_device+0x3b8/0x580 drivers/hid/hid-core.c:2848 usbhid_probe+0xc12/0xff0 drivers/hid/usbhid/hid-core.c:1443 usb_probe_interface+0x621/0xb30 drivers/usb/core/driver.c:397 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 usb_set_configuration+0x1a01/0x1f70 drivers/usb/core/message.c:2223 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238 usb_probe_device+0x154/0x260 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 usb_new_device+0x9f4/0x1500 drivers/usb/core/hub.c:2684 hub_port_connect drivers/usb/core/hub.c:5594 [inline] hub_port_connect_change drivers/usb/core/hub.c:5734 [inline] port_event drivers/usb/core/hub.c:5898 [inline] hub_event+0x27fb/0x4310 drivers/usb/core/hub.c:5980 process_one_work+0x717/0xc30 kernel/workqueue.c:2302 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:logi_dj_probe+0x66f/0xf40 drivers/hid/hid-logitech-dj.c:1803 Code: 3e c5 fd 49 83 c7 40 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3f dc 0a fe 4d 8b 37 49 83 c6 28 4c 89 f0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 a3 08 00 00 41 8b 0e 49 81 c5 e0 18 00 00 RSP: 0018:ffffc90000d36bc8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff888120c12880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d36c18 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520001a6c9c R12: 0000000000000000 R13: ffff888109438000 R14: 0000000000000028 R15: ffff888113c6a040 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005627a5dbd1c0 CR3: 000000010fd36000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3e c5 fd 49 ds (bad) 4: 83 c7 40 add $0x40,%edi 7: 4c 89 f8 mov %r15,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 12: 74 08 je 0x1c 14: 4c 89 ff mov %r15,%rdi 17: e8 3f dc 0a fe call 0xfe0adc5b 1c: 4d 8b 37 mov (%r15),%r14 1f: 49 83 c6 28 add $0x28,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 a3 08 00 00 jne 0x8d9 36: 41 8b 0e mov (%r14),%ecx 39: 49 81 c5 e0 18 00 00 add $0x18e0,%r13 final repro crashed as (corrupted=false): usb 3-1: New USB device found, idVendor=046d, idProduct=c52b, bcdDevice=24.00 usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 3-1: Product: syz usb 3-1: Manufacturer: syz general protection fault, probably for non-canonical address 0xdffffc0000000005: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000028-0x000000000000002f] CPU: 1 PID: 233 Comm: kworker/1:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/15/2026 Workqueue: usb_hub_wq hub_event RIP: 0010:logi_dj_probe+0x66f/0xf40 drivers/hid/hid-logitech-dj.c:1803 Code: 3e c5 fd 49 83 c7 40 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3f dc 0a fe 4d 8b 37 49 83 c6 28 4c 89 f0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 a3 08 00 00 41 8b 0e 49 81 c5 e0 18 00 00 RSP: 0018:ffffc90000d36bc8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff888120c12880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d36c18 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520001a6c9c R12: 0000000000000000 R13: ffff888109438000 R14: 0000000000000028 R15: ffff888113c6a040 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8527c716a0 CR3: 000000012bdc8000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hid_device_probe+0x273/0x410 drivers/hid/hid-core.c:2694 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 hid_add_device+0x3b8/0x580 drivers/hid/hid-core.c:2848 usbhid_probe+0xc12/0xff0 drivers/hid/usbhid/hid-core.c:1443 usb_probe_interface+0x621/0xb30 drivers/usb/core/driver.c:397 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 usb_set_configuration+0x1a01/0x1f70 drivers/usb/core/message.c:2223 usb_generic_driver_probe+0x91/0x150 drivers/usb/core/generic.c:238 usb_probe_device+0x154/0x260 drivers/usb/core/driver.c:294 call_driver_probe drivers/base/dd.c:-1 [inline] really_probe+0x2d7/0x9a0 drivers/base/dd.c:639 __driver_probe_device+0x193/0x270 drivers/base/dd.c:808 driver_probe_device+0x54/0x3e0 drivers/base/dd.c:838 __device_attach_driver+0x2e9/0x4a0 drivers/base/dd.c:966 bus_for_each_drv+0x192/0x220 drivers/base/bus.c:429 __device_attach+0x2b0/0x420 drivers/base/dd.c:1038 device_initial_probe+0x1a/0x20 drivers/base/dd.c:1087 bus_probe_device+0xc0/0x1f0 drivers/base/bus.c:489 device_add+0xb0b/0xec0 drivers/base/core.c:3698 usb_new_device+0x9f4/0x1500 drivers/usb/core/hub.c:2684 hub_port_connect drivers/usb/core/hub.c:5594 [inline] hub_port_connect_change drivers/usb/core/hub.c:5734 [inline] port_event drivers/usb/core/hub.c:5898 [inline] hub_event+0x27fb/0x4310 drivers/usb/core/hub.c:5980 process_one_work+0x717/0xc30 kernel/workqueue.c:2302 worker_thread+0xa4d/0x11d0 kernel/workqueue.c:2449 kthread+0x281/0x320 kernel/kthread.c:386 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:logi_dj_probe+0x66f/0xf40 drivers/hid/hid-logitech-dj.c:1803 Code: 3e c5 fd 49 83 c7 40 4c 89 f8 48 c1 e8 03 80 3c 18 00 74 08 4c 89 ff e8 3f dc 0a fe 4d 8b 37 49 83 c6 28 4c 89 f0 48 c1 e8 03 <0f> b6 04 18 84 c0 0f 85 a3 08 00 00 41 8b 0e 49 81 c5 e0 18 00 00 RSP: 0018:ffffc90000d36bc8 EFLAGS: 00010206 RAX: 0000000000000005 RBX: dffffc0000000000 RCX: ffff888120c12880 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000d36c18 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffff520001a6c9c R12: 0000000000000000 R13: ffff888109438000 R14: 0000000000000028 R15: ffff888113c6a040 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005627a5dbd1c0 CR3: 000000010fd36000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 3e c5 fd 49 ds (bad) 4: 83 c7 40 add $0x40,%edi 7: 4c 89 f8 mov %r15,%rax a: 48 c1 e8 03 shr $0x3,%rax e: 80 3c 18 00 cmpb $0x0,(%rax,%rbx,1) 12: 74 08 je 0x1c 14: 4c 89 ff mov %r15,%rdi 17: e8 3f dc 0a fe call 0xfe0adc5b 1c: 4d 8b 37 mov (%r15),%r14 1f: 49 83 c6 28 add $0x28,%r14 23: 4c 89 f0 mov %r14,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 0f b6 04 18 movzbl (%rax,%rbx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 a3 08 00 00 jne 0x8d9 36: 41 8b 0e mov (%r14),%ecx 39: 49 81 c5 e0 18 00 00 add $0x18e0,%r13