Extracting prog: 1m9.039366763s Minimizing prog: 8m9.39996195s Simplifying prog options: 0s Extracting C: 38.521709146s Simplifying C: 17m12.392477835s 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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) program crashed: WARNING in hci_conn_timeout 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: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}}): bpf$MAP_CREATE-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, 0x0, 0x0) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(0x0, 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(0x0, 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB], 0xa) 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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout simplifying C reproducer testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {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: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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false 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}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci program crashed: WARNING in hci_conn_timeout testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) program crashed: WARNING in hci_conn_timeout validation run: crashed=true testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) program crashed: WARNING in hci_conn_timeout validation run: crashed=true testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE-syz_emit_vhci-syz_emit_vhci detailed listing: executing program 0: bpf$MAP_CREATE(0x0, &(0x7f0000000000)=@base={0x5, 0x3, 0x3800, 0x7, 0x11}, 0x48) syz_emit_vhci(&(0x7f0000000540)=ANY=[@ANYBLOB="043e1f0a"], 0x22) syz_emit_vhci(&(0x7f0000000000)=ANY=[@ANYBLOB="040e079c0814"], 0xa) program crashed: WARNING in hci_conn_timeout validation run: crashed=true reproducing took 30m5.111803577s repro crashed as (corrupted=false): kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 ------------[ cut here ]------------ WARNING: net/bluetooth/hci_conn.c:649 at hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649, CPU#0: kworker/u9:1/4732 Modules linked in: CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_conn_timeout pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 lr : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 sp : ffff8000959d7b20 x29: ffff8000959d7b20 x28: ffff0000c935a800 x27: ffff0000ce394a50 x26: dfff800000000000 x25: ffff0000d3e55880 x24: ffff0000c935a808 x23: ffff0000c6736168 x22: dfff800000000000 x21: 00000000ffffffff x20: ffff0000ce394a50 x19: ffff0000ce394000 x18: 00000000ffffffff x17: 0000000000000003 x16: ffff800089797000 x15: ffff80008b44b000 x14: ffff80008bc832b0 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff600019c72803 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff80008b46a020 x4 : 0000000000000008 x3 : ffff800085b05194 x2 : 00000000ffffffff x1 : ffff0000d3e55880 x0 : 0000000000000000 Call trace: hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 (P) process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 irq event stamp: 3040 hardirqs last enabled at (3039): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:219 [inline] hardirqs last enabled at (3039): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:229 hardirqs last disabled at (3040): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483 softirqs last enabled at (2934): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698 softirqs last disabled at (2930): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (2930): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:697 ---[ end trace 0000000000000000 ]--- sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 final repro crashed as (corrupted=false): kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 ------------[ cut here ]------------ WARNING: net/bluetooth/hci_conn.c:649 at hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649, CPU#0: kworker/u9:1/4732 Modules linked in: CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Not tainted syzkaller #0 PREEMPT Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_conn_timeout pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 lr : hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 sp : ffff8000959d7b20 x29: ffff8000959d7b20 x28: ffff0000c935a800 x27: ffff0000ce394a50 x26: dfff800000000000 x25: ffff0000d3e55880 x24: ffff0000c935a808 x23: ffff0000c6736168 x22: dfff800000000000 x21: 00000000ffffffff x20: ffff0000ce394a50 x19: ffff0000ce394000 x18: 00000000ffffffff x17: 0000000000000003 x16: ffff800089797000 x15: ffff80008b44b000 x14: ffff80008bc832b0 x13: 0000000000000001 x12: 0000000000000000 x11: 0000000000000000 x10: ffff600019c72803 x9 : 0000000000000000 x8 : 0000000000000000 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff80008b46a020 x4 : 0000000000000008 x3 : ffff800085b05194 x2 : 00000000ffffffff x1 : ffff0000d3e55880 x0 : 0000000000000000 Call trace: hci_conn_timeout+0xfc/0x20c net/bluetooth/hci_conn.c:649 (P) process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 irq event stamp: 3040 hardirqs last enabled at (3039): [] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:219 [inline] hardirqs last enabled at (3039): [] _raw_spin_unlock_irq+0x30/0x80 kernel/locking/spinlock.c:229 hardirqs last disabled at (3040): [] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:483 softirqs last enabled at (2934): [] __alloc_skb+0x1c0/0x610 net/core/skbuff.c:698 softirqs last disabled at (2930): [] local_bh_disable include/linux/bottom_half.h:20 [inline] softirqs last disabled at (2930): [] __alloc_skb+0x1a8/0x610 net/core/skbuff.c:697 ---[ end trace 0000000000000000 ]--- sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 1 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408 sysfs: cannot create duplicate filename '/devices/virtual/bluetooth/hci0/hci0:0' CPU: 0 UID: 0 PID: 4732 Comm: kworker/u9:1 Tainted: G W syzkaller #0 PREEMPT Tainted: [W]=WARN Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/23/2026 Workqueue: hci0 hci_rx_work Call trace: show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C) __dump_stack+0x30/0x40 lib/dump_stack.c:94 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120 dump_stack+0x1c/0x28 lib/dump_stack.c:129 sysfs_warn_dup+0x9c/0xb8 fs/sysfs/dir.c:30 sysfs_create_dir_ns+0x190/0x1f4 fs/sysfs/dir.c:63 create_dir lib/kobject.c:73 [inline] kobject_add_internal+0x290/0x6f0 lib/kobject.c:240 kobject_add_varg+0x9c/0xe8 lib/kobject.c:374 kobject_add+0x110/0x1c8 lib/kobject.c:426 device_add+0x394/0x9e0 drivers/base/core.c:3699 hci_conn_add_sysfs+0xbc/0x1e8 net/bluetooth/hci_sysfs.c:61 le_conn_complete_evt+0xc84/0x122c net/bluetooth/hci_event.c:5892 hci_le_enh_conn_complete_evt+0x114/0x3d8 net/bluetooth/hci_event.c:5948 hci_le_meta_evt+0x2b0/0x46c net/bluetooth/hci_event.c:7612 hci_event_func net/bluetooth/hci_event.c:7884 [inline] hci_event_packet+0x4c0/0x9c8 net/bluetooth/hci_event.c:7938 hci_rx_work+0x2f4/0xd78 net/bluetooth/hci_core.c:4087 process_one_work kernel/workqueue.c:3396 [inline] process_scheduled_works+0x91c/0x1250 kernel/workqueue.c:3479 worker_thread+0x798/0xbd0 kernel/workqueue.c:3560 kthread+0x304/0x3d4 kernel/kthread.c:436 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:854 kobject: kobject_add_internal failed for hci0:0 with -EEXIST, don't try to register things with the same name in the same directory. Bluetooth: hci0: failed to register connection device Bluetooth: hci0: unexpected event for opcode 0x1408