Extracting prog: 5m7.761296345s Minimizing prog: 10m11.206568214s Simplifying prog options: 0s Extracting C: 1m8.941158185s Simplifying C: 16m12.223433594s extracting reproducer from 65 programs testing a last program of every proc single: executing 16 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-bpf$PROG_LOAD-bpf$MAP_CREATE_CONST_STR-syz_init_net_socket$nl_generic-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$nfc-sendmsg$NFC_CMD_GET_TARGET-syz_genetlink_get_family_id$nfc-syz_genetlink_get_family_id$nbd-sendmsg$NBD_CMD_RECONFIGURE-syz_init_net_socket$nl_generic-syz_genetlink_get_family_id$netlbl_unlabel-sendmsg$NLBL_UNLABEL_C_STATICADD-sendmsg$NLBL_UNLABEL_C_STATICREMOVE-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-socketpair$tipc-unshare-socket-setsockopt$inet6_group_source_req-socket-setsockopt$inet6_group_source_req-setsockopt$inet6_group_source_req-close-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$MAP_UPDATE_CONST_STR-bpf$PROG_BIND_MAP detailed listing: executing program 0: r0 = bpf$PROG_LOAD(0x5, &(0x7f00000005c0)={0x0, 0xc, &(0x7f0000000440)=ANY=[@ANYBLOB="1800000000000000000000000000000085000000070000001801000020756c2500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b70300000000a5df850000002d00000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94) bpf$PROG_LOAD(0x5, &(0x7f00000007c0)={0x11, 0xc, &(0x7f0000000440)=ANY=[], &(0x7f00000001c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x2, '\x00', 0x0, @fallback=0x17, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, r0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value}, 0x94) bpf$MAP_CREATE_CONST_STR(0x0, &(0x7f0000000340)={0x2, 0x4, 0x8, 0x1, 0x80, 0x0, 0x0, '\x00', 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, @void, @value, @void, @value}, 0x48) r1 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r2 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r3 = syz_genetlink_get_family_id$nfc(&(0x7f0000000180), r2) sendmsg$NFC_CMD_GET_TARGET(r2, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f00000001c0)={0x14, r3, 0x1}, 0x14}}, 0x0) syz_genetlink_get_family_id$nfc(&(0x7f0000000300), r2) r4 = syz_genetlink_get_family_id$nbd(&(0x7f0000000000), r2) sendmsg$NBD_CMD_RECONFIGURE(r1, &(0x7f0000001740)={0x0, 0x0, &(0x7f0000000280)={&(0x7f0000000080)=ANY=[@ANYBLOB='(\x00\x00\x00', @ANYRES16=r4, @ANYBLOB="0100000000000000000003000000080001"], 0x28}}, 0x0) r5 = syz_init_net_socket$nl_generic(0x10, 0x3, 0x10) r6 = syz_genetlink_get_family_id$netlbl_unlabel(&(0x7f00000002c0), r5) sendmsg$NLBL_UNLABEL_C_STATICADD(r5, &(0x7f0000000200)={0x0, 0x0, &(0x7f0000000100)={&(0x7f0000000040)={0x4c, r6, 0x201, 0x70bd26, 0xfffffffe, {0x3, 0x0, 0x26}, [@NLBL_UNLABEL_A_IPV4ADDR={0x8, 0x4, @empty=0x3a26}, @NLBL_UNLABEL_A_IFACE={0x14, 0x6, 'sit0\x00'}, @NLBL_UNLABEL_A_IPV6ADDR={0x14, 0x7, @ipv4={'\x00', '\xff\xff', @loopback}}, @NLBL_UNLABEL_A_IPV4MASK={0x8, 0x5, @dev={0xac, 0x14, 0x14, 0x2c}}]}, 0x4c}, 0x8, 0x3000000000002}, 0x4) sendmsg$NLBL_UNLABEL_C_STATICREMOVE(r1, &(0x7f0000000940)={0x0, 0x0, &(0x7f0000000900)={&(0x7f00000008c0)={0x28, r6, 0x400, 0x70bd2a, 0x25dfdbfd, {}, [@NLBL_UNLABEL_A_IPV6MASK={0x14, 0x3, @initdev={0xfe, 0x88, '\x00', 0x0, 0x0}}]}, 0x28}, 0x1, 0x0, 0x0, 0x4000}, 0x804) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, 0x0, 0x0) socketpair$tipc(0x1e, 0x5, 0x0, &(0x7f0000000500)={0xffffffffffffffff}) unshare(0x6a040000) r8 = socket(0x80000000000000a, 0x2, 0x0) setsockopt$inet6_group_source_req(r8, 0x29, 0x2e, &(0x7f0000000200)={0x0, {{0xa, 0x0, 0x0, @mcast1={0xff, 0x7}}}, {{0xa, 0x0, 0x0, @remote}}}, 0x108) r9 = socket(0x80000000000000a, 0x2, 0x0) setsockopt$inet6_group_source_req(r9, 0x29, 0x2a, &(0x7f0000000200)={0x0, {{0xa, 0x0, 0x0, @mcast1={0xff, 0x7}}}, {{0xa, 0x0, 0x0, @remote}}}, 0x108) setsockopt$inet6_group_source_req(r9, 0x29, 0x2b, &(0x7f0000000200)={0x0, {{0xa, 0x0, 0x0, @mcast1={0xff, 0x7}}}, {{0xa, 0x0, 0x0, @ipv4={'\x00', '\xff\xff', @empty}, 0x80000}}}, 0x108) close(r9) r10 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000240)={0x11, 0x8, &(0x7f0000000000)=@framed={{0x18, 0x0, 0x0, 0x0, 0x7ff, 0x0, 0x0, 0x0, 0x3}, [@kfunc={0x85, 0x0, 0x2, 0x0, 0x2}, @map_idx_val={0x18, 0x4, 0x6, 0x0, 0x2, 0x0, 0x0, 0x0, 0x5}, @initr0={0x18, 0x0, 0x0, 0x0, 0xf70, 0x0, 0x0, 0x0, 0x3}]}, &(0x7f0000000040)='GPL\x00', 0x7, 0x0, 0x0, 0x40f00, 0x4, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x8, &(0x7f0000000080)={0x4, 0x4}, 0x8, 0x10, 0x0, 0x0, 0x0, 0x0, 0x3, &(0x7f00000000c0)=[0x1, 0xffffffffffffffff, r7, 0xffffffffffffffff, 0x1, 0x1, 0xffffffffffffffff, 0x1], &(0x7f0000000100)=[{0x4, 0x3, 0xe, 0xb}, {0x5, 0x2, 0xf, 0xc}, {0x5, 0x1, 0x2, 0x3}], 0x10, 0x0, @void, @value}, 0x94) bpf$MAP_UPDATE_CONST_STR(0x2, &(0x7f0000000340)={{0xffffffffffffffff, 0xffffffffffffffff}, &(0x7f0000000140), &(0x7f0000000300)='%pI4 \x00'}, 0x20) bpf$PROG_BIND_MAP(0x23, &(0x7f0000000380)={r10, r11}, 0xc) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-setsockopt$inet_tcp_int-bind$inet-connect$inet-setsockopt$inet_tcp_TCP_REPAIR_OPTIONS-setsockopt$inet_tcp_TCP_CONGESTION-setsockopt$inet_tcp_TCP_REPAIR-sendto$inet-recvfrom$inet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) setsockopt$inet_tcp_int(r0, 0x6, 0x210000000013, &(0x7f00000000c0)=0x100000001, 0x4) bind$inet(r0, &(0x7f0000000080)={0x2, 0x4e21, @broadcast}, 0x10) connect$inet(r0, &(0x7f0000000180)={0x2, 0x4e21, @local}, 0x10) setsockopt$inet_tcp_TCP_REPAIR_OPTIONS(r0, 0x6, 0x16, &(0x7f0000000240)=[@mss, @sack_perm, @timestamp, @mss={0x2, 0x1}, @window, @window={0x3, 0x0, 0xfffc}, @timestamp, @timestamp], 0x8) setsockopt$inet_tcp_TCP_CONGESTION(r0, 0x6, 0xd, &(0x7f0000000040)='nv\x00', 0x3) setsockopt$inet_tcp_TCP_REPAIR(r0, 0x6, 0x13, &(0x7f00000001c0), 0xc7) sendto$inet(r0, &(0x7f0000000000), 0xffffffffffffff94, 0x0, 0x0, 0x0) recvfrom$inet(r0, &(0x7f0000000080)=""/8, 0xfffffffffffffd0b, 0x712, 0x0, 0xfffffffffffffd25) 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-recvmmsg-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) recvmmsg(r0, &(0x7f0000000000)=[{{0x0, 0x0, 0x0}, 0x8}], 0x1, 0x0, 0x0) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB="02c8000c00080002"], 0x11) program crashed: WARNING: bad unlock balance in l2cap_recv_frame single: successfully extracted reproducer found reproducer with 4 syscalls minimizing guilty program testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-recvmmsg detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) recvmmsg(r0, &(0x7f0000000000)=[{{0x0, 0x0, 0x0}, 0x8}], 0x1, 0x0, 0x0) program did not crash testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB="02c8000c00080002"], 0x11) program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB="02c8000c00080002"], 0x11) program did not crash testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): connect$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: connect$bt_l2cap(0xffffffffffffffff, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB="02c8000c00080002"], 0x11) program did not crash testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, 0x0, 0x0) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB="02c8000c00080002"], 0x11) program did not crash testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) syz_emit_vhci(0x0, 0x11) program did not crash testing program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci detailed listing: executing program 0: r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x3, 0x0) connect$bt_l2cap(r0, &(0x7f0000000040)={0x1f, 0x0, @fixed={'\xaa\xaa\xaa\xaa\xaa', 0x10}}, 0xf) syz_emit_vhci(&(0x7f00000000c0)=ANY=[@ANYBLOB], 0x11) program did not crash extracting C reproducer testing compiled C program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame simplifying C reproducer testing compiled C program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program did not crash testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program did not crash testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame testing compiled C program (duration=53.190975021s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none 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:true Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-connect$bt_l2cap-syz_emit_vhci program crashed: WARNING: bad unlock balance in l2cap_recv_frame reproducing took 32m40.132490099s repro crashed as (corrupted=false): ===================================== WARNING: bad unlock balance detected! 5.15.179-syzkaller #0 Not tainted ------------------------------------- kworker/u5:2/4023 is trying to release lock (&chan->lock) at: [] l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline] [] l2cap_conless_channel net/bluetooth/l2cap_core.c:7766 [inline] [] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7819 but there are no more locks to release! other info that might help us debug this: 2 locks held by kworker/u5:2/4023: #0: ffff0000cabe3938 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001f9d7c00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 stack backtrace: CPU: 1 PID: 4023 Comm: kworker/u5:2 Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: hci0 hci_rx_work Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_unlock_imbalance_bug+0x250/0x2a4 kernel/locking/lockdep.c:5065 __lock_release kernel/locking/lockdep.c:-1 [inline] lock_release+0x4b8/0xa1c kernel/locking/lockdep.c:5643 __mutex_unlock_slowpath+0xe0/0x6d4 kernel/locking/mutex.c:851 mutex_unlock+0x8c/0xe0 kernel/locking/mutex.c:536 l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline] l2cap_conless_channel net/bluetooth/l2cap_core.c:7766 [inline] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7819 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8531 hci_acldata_packet net/bluetooth/hci_core.c:4973 [inline] hci_rx_work+0x3a8/0x830 net/bluetooth/hci_core.c:5165 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 final repro crashed as (corrupted=false): ===================================== WARNING: bad unlock balance detected! 5.15.179-syzkaller #0 Not tainted ------------------------------------- kworker/u5:2/4023 is trying to release lock (&chan->lock) at: [] l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline] [] l2cap_conless_channel net/bluetooth/l2cap_core.c:7766 [inline] [] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7819 but there are no more locks to release! other info that might help us debug this: 2 locks held by kworker/u5:2/4023: #0: ffff0000cabe3938 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283 #1: ffff80001f9d7c00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285 stack backtrace: CPU: 1 PID: 4023 Comm: kworker/u5:2 Not tainted 5.15.179-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: hci0 hci_rx_work Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 print_unlock_imbalance_bug+0x250/0x2a4 kernel/locking/lockdep.c:5065 __lock_release kernel/locking/lockdep.c:-1 [inline] lock_release+0x4b8/0xa1c kernel/locking/lockdep.c:5643 __mutex_unlock_slowpath+0xe0/0x6d4 kernel/locking/mutex.c:851 mutex_unlock+0x8c/0xe0 kernel/locking/mutex.c:536 l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline] l2cap_conless_channel net/bluetooth/l2cap_core.c:7766 [inline] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7819 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8531 hci_acldata_packet net/bluetooth/hci_core.c:4973 [inline] hci_rx_work+0x3a8/0x830 net/bluetooth/hci_core.c:5165 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870