Extracting prog: 5m50.200341969s Minimizing prog: 7m56.138570078s Simplifying prog options: 0s Extracting C: 1m33.769148446s Simplifying C: 20m9.30508744s 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: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_mount_image$ext4-openat$cgroup_ro-ioctl$FS_IOC_GET_ENCRYPTION_NONCE detailed listing: executing program 0: syz_mount_image$ext4(&(0x7f0000000080)='ext4\x00', &(0x7f00000001c0)='./file1\x00', 0x800714, &(0x7f00000000c0)={[{@test_dummy_encryption}]}, 0x1, 0x4c0, &(0x7f00000006c0)="$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") r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='cgroup.controllers\x00', 0x275a, 0x0) ioctl$FS_IOC_GET_ENCRYPTION_NONCE(r0, 0x8010661b, 0x0) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): unshare-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO detailed listing: executing program 0: unshare(0x20400) r0 = bpf$PROG_LOAD(0x5, &(0x7f000000e000)={0xe, 0x4, &(0x7f0000000540)=ANY=[@ANYBLOB="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"], &(0x7f0000003ff6)='GPL\x00', 0x4, 0xfd90, &(0x7f000000cf3d)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x366, 0x10, &(0x7f0000000000), 0x1dd}, 0x48) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f0000000340)={r0, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x51, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x57, 0x0, 0x8, 0x0, 0x0}}, 0x10) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program crashed: possible deadlock in rfcomm_security_cfm single: successfully extracted reproducer found reproducer with 3 syscalls minimizing guilty program testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: connect$bt_rfcomm(0xffffffffffffffff, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, 0x0, 0x0) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program did not crash testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm simplifying C reproducer testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program did not crash testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci program crashed: possible deadlock in rfcomm_security_cfm testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program crashed: possible deadlock in rfcomm_security_cfm validation run: crashed=true testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program crashed: possible deadlock in rfcomm_security_cfm validation run: crashed=true testing program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_rfcomm-connect$bt_rfcomm-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_rfcomm(0x1f, 0x1, 0x3) connect$bt_rfcomm(r0, &(0x7f0000005dc0)={0x1f, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}, 0x15}, 0xa) syz_emit_vhci(&(0x7f0000003980)=@HCI_EVENT_PKT={0x4, @hci_ev_auth_complete={{0x6, 0x3}, {0x6, 0xc8}}}, 0x6) program crashed: possible deadlock in rfcomm_security_cfm validation run: crashed=true reproducing took 39m8.59398523s repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ kworker/u5:7/4466 is trying to acquire lock: ffff800017bb6ac8 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 but task is already holding lock: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_cfm include/net/bluetooth/hci_core.h:1854 [inline] (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x280/0xa68 net/bluetooth/hci_event.c:3494 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (hci_cb_list_lock){+.+.}-{3:3}: __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hci_connect_cfm include/net/bluetooth/hci_core.h:1818 [inline] hci_remote_features_evt+0x410/0x840 net/bluetooth/hci_event.c:3734 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 -> #1 (&hdev->lock){+.+.}-{3:3}: __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 l2cap_chan_connect+0xd0/0xba0 net/bluetooth/l2cap_core.c:7284 l2cap_sock_connect+0x414/0x600 net/bluetooth/l2cap_sock.c:257 kernel_connect+0x124/0x190 net/socket.c:3555 rfcomm_session_create net/bluetooth/rfcomm/core.c:807 [inline] __rfcomm_dlc_open net/bluetooth/rfcomm/core.c:384 [inline] rfcomm_dlc_open+0x4f4/0xcf4 net/bluetooth/rfcomm/core.c:427 rfcomm_sock_connect+0x25c/0x57c net/bluetooth/rfcomm/sock.c:421 __sys_connect_file net/socket.c:2011 [inline] __sys_connect+0x28c/0x2b4 net/socket.c:2028 __do_sys_connect net/socket.c:2038 [inline] __se_sys_connect net/socket.c:2035 [inline] __arm64_sys_connect+0x7c/0x94 net/socket.c:2035 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (rfcomm_mutex){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5678 __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 hci_auth_cfm include/net/bluetooth/hci_core.h:1857 [inline] hci_auth_complete_evt+0x2e4/0xa68 net/bluetooth/hci_event.c:3494 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 other info that might help us debug this: Chain exists of: rfcomm_mutex --> &hdev->lock --> hci_cb_list_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(hci_cb_list_lock); lock(&hdev->lock); lock(hci_cb_list_lock); lock(rfcomm_mutex); *** DEADLOCK *** 4 locks held by kworker/u5:7/4466: #0: ffff0000d63bd938 ((wq_completion)hci2#2){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff800020c67c40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff0000d5b74428 (&hdev->lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x94/0xa68 net/bluetooth/hci_event.c:3462 #3: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_cfm include/net/bluetooth/hci_core.h:1854 [inline] #3: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x280/0xa68 net/bluetooth/hci_event.c:3494 stack backtrace: CPU: 1 PID: 4466 Comm: kworker/u5:7 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 Workqueue: hci2 hci_rx_work Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048 check_noncircular+0x264/0x2f8 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5678 __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 hci_auth_cfm include/net/bluetooth/hci_core.h:1857 [inline] hci_auth_complete_evt+0x2e4/0xa68 net/bluetooth/hci_event.c:3494 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 final repro crashed as (corrupted=false): ====================================================== WARNING: possible circular locking dependency detected syzkaller #0 Not tainted ------------------------------------------------------ kworker/u5:7/4466 is trying to acquire lock: ffff800017bb6ac8 (rfcomm_mutex){+.+.}-{3:3}, at: rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 but task is already holding lock: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_cfm include/net/bluetooth/hci_core.h:1854 [inline] (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x280/0xa68 net/bluetooth/hci_event.c:3494 which lock already depends on the new lock. the existing dependency chain (in reverse order) is: -> #2 (hci_cb_list_lock){+.+.}-{3:3}: __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 hci_connect_cfm include/net/bluetooth/hci_core.h:1818 [inline] hci_remote_features_evt+0x410/0x840 net/bluetooth/hci_event.c:3734 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 -> #1 (&hdev->lock){+.+.}-{3:3}: __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 l2cap_chan_connect+0xd0/0xba0 net/bluetooth/l2cap_core.c:7284 l2cap_sock_connect+0x414/0x600 net/bluetooth/l2cap_sock.c:257 kernel_connect+0x124/0x190 net/socket.c:3555 rfcomm_session_create net/bluetooth/rfcomm/core.c:807 [inline] __rfcomm_dlc_open net/bluetooth/rfcomm/core.c:384 [inline] rfcomm_dlc_open+0x4f4/0xcf4 net/bluetooth/rfcomm/core.c:427 rfcomm_sock_connect+0x25c/0x57c net/bluetooth/rfcomm/sock.c:421 __sys_connect_file net/socket.c:2011 [inline] __sys_connect+0x28c/0x2b4 net/socket.c:2028 __do_sys_connect net/socket.c:2038 [inline] __se_sys_connect net/socket.c:2035 [inline] __arm64_sys_connect+0x7c/0x94 net/socket.c:2035 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x290 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x13c/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x5c/0x134 arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x128 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 -> #0 (rfcomm_mutex){+.+.}-{3:3}: check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5678 __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 hci_auth_cfm include/net/bluetooth/hci_core.h:1857 [inline] hci_auth_complete_evt+0x2e4/0xa68 net/bluetooth/hci_event.c:3494 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850 other info that might help us debug this: Chain exists of: rfcomm_mutex --> &hdev->lock --> hci_cb_list_lock Possible unsafe locking scenario: CPU0 CPU1 ---- ---- lock(hci_cb_list_lock); lock(&hdev->lock); lock(hci_cb_list_lock); lock(rfcomm_mutex); *** DEADLOCK *** 4 locks held by kworker/u5:7/4466: #0: ffff0000d63bd938 ((wq_completion)hci2#2){+.+.}-{0:0}, at: process_one_work+0x69c/0x13bc kernel/workqueue.c:-1 #1: ffff800020c67c40 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6e8/0x13bc kernel/workqueue.c:2267 #2: ffff0000d5b74428 (&hdev->lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x94/0xa68 net/bluetooth/hci_event.c:3462 #3: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_cfm include/net/bluetooth/hci_core.h:1854 [inline] #3: ffff800017b94328 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_auth_complete_evt+0x280/0xa68 net/bluetooth/hci_event.c:3494 stack backtrace: CPU: 1 PID: 4466 Comm: kworker/u5:7 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/14/2026 Workqueue: hci2 hci_rx_work Call trace: dump_backtrace+0x1c4/0x1f0 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack+0x30/0x40 lib/dump_stack.c:88 dump_stack_lvl+0xf4/0x15c lib/dump_stack.c:106 dump_stack+0x1c/0x5c lib/dump_stack.c:113 print_circular_bug+0x148/0x1b0 kernel/locking/lockdep.c:2048 check_noncircular+0x264/0x2f8 kernel/locking/lockdep.c:2170 check_prev_add kernel/locking/lockdep.c:3095 [inline] check_prevs_add kernel/locking/lockdep.c:3214 [inline] validate_chain kernel/locking/lockdep.c:3830 [inline] __lock_acquire+0x2808/0x6634 kernel/locking/lockdep.c:5063 lock_acquire+0x20c/0x638 kernel/locking/lockdep.c:5678 __mutex_lock_common+0x1a0/0x1f3c kernel/locking/mutex.c:603 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 rfcomm_security_cfm+0x9c/0x674 net/bluetooth/rfcomm/core.c:2210 hci_auth_cfm include/net/bluetooth/hci_core.h:1857 [inline] hci_auth_complete_evt+0x2e4/0xa68 net/bluetooth/hci_event.c:3494 hci_event_func net/bluetooth/hci_event.c:7314 [inline] hci_event_packet+0x698/0xe60 net/bluetooth/hci_event.c:7366 hci_rx_work+0x310/0xa70 net/bluetooth/hci_core.c:4006 process_one_work+0x7e4/0x13bc kernel/workqueue.c:2292 worker_thread+0x8cc/0xfe8 kernel/workqueue.c:2439 kthread+0x254/0x2e0 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:850