Extracting prog: 6m2.077143526s
Minimizing prog: 12m8.16354596s
Simplifying prog options: 0s
Extracting C: 1m13.917745496s
Simplifying C: 19m16.643312851s


30 programs, timeouts [30s 1m40s 6m0s]
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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socketpair$nbd-sendmmsg$inet
detailed listing:
executing program 0:
socketpair$nbd(0x1, 0x1, 0x0, &(0x7f0000000180)={0xffffffffffffffff, <r0=>0xffffffffffffffff})
sendmmsg$inet(r0, &(0x7f00000040c0)=[{{0x0, 0x0, &(0x7f0000000dc0)=[{0x0}, {0x0}, {0x0}, {0x0}, {0x0}], 0x5}}, {{&(0x7f0000000e80)={0x2, 0x4e24, @multicast2}, 0x10, &(0x7f00000010c0), 0x0, &(0x7f0000004200)=ANY=[], 0x80}}, {{&(0x7f00000022c0)={0x2, 0x4e20, @multicast1}, 0x10, 0x0, 0x0, &(0x7f00000037c0)}}], 0x3, 0x800)

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$nl_netfilter-sendmsg$NFT_BATCH
detailed listing:
executing program 0:
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$NFT_BATCH(r0, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000100)={{0x14}, [@NFT_MSG_NEWSET={0x44, 0x9, 0xa, 0x401, 0x0, 0x0, {0x7}, [@NFTA_SET_ID={0x8}, @NFTA_SET_NAME={0x9, 0x2, 'syz1\x00'}, @NFTA_SET_TABLE={0x9, 0x1, 'syz0\x00'}, @NFTA_SET_KEY_LEN={0x8, 0x5, 0x1, 0x0, 0xc}, @NFTA_SET_DATA_TYPE={0x8}]}], {0x14, 0x10, 0x1, 0x0, 0x0, {0x0, 0x84}}}, 0x6c}}, 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_generic-syz_genetlink_get_family_id$nl80211-ioctl$sock_SIOCGIFINDEX_80211-sendmsg$NL80211_CMD_SET_INTERFACE
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000080), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000040)={'wlan0\x00', <r2=>0x0})
sendmsg$NL80211_CMD_SET_INTERFACE(r0, &(0x7f0000000100)={0x0, 0x0, &(0x7f0000000140)={&(0x7f0000000680)={0x28, r1, 0x5, 0x70bd2d, 0x0, {{}, {@val={0x8, 0x3, r2}, @void}}, [@mon_options=[@NL80211_ATTR_MNTR_FLAGS={0x4}], @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x6}]}, 0x28}, 0x1, 0x0, 0x0, 0x14}, 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 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, &(0x7f0000000a00)=[{{0x0, 0x0, 0x0}, 0x7}], 0x1, 0x2026, 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=1m0.259540273s, {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, &(0x7f0000000a00)=[{{0x0, 0x0, 0x0}, 0x7}], 0x1, 0x2026, 0x0)

program did not crash
testing program (duration=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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=1m0.259540273s, {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 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=1m0.259540273s, {Threaded:false 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 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=1m0.259540273s, {Threaded:false 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 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=1m0.259540273s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 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=1m0.259540273s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 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 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=1m0.259540273s, {Threaded:false Repeat:true 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=1m0.259540273s, {Threaded:false Repeat:true 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=1m0.259540273s, {Threaded:false Repeat:true 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: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: KASAN: use-after-free Read in release_sock
a never seen crash title: KASAN: use-after-free Read in release_sock, ignore
testing compiled C program (duration=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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=1m0.259540273s, {Threaded:false Repeat:true 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: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 38m40.801778962s
repro crashed as (corrupted=false):
=====================================
WARNING: bad unlock balance detected!
5.15.167-syzkaller #0 Not tainted
-------------------------------------
kworker/u5:2/4025 is trying to release lock (&chan->lock) at:
[<ffff800010e32abc>] l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline]
[<ffff800010e32abc>] l2cap_conless_channel net/bluetooth/l2cap_core.c:7770 [inline]
[<ffff800010e32abc>] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7823
but there are no more locks to release!

other info that might help us debug this:
2 locks held by kworker/u5:2/4025:
 #0: ffff0000cbe5e138 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
 #1: ffff80001ff57c00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285

stack backtrace:
CPU: 1 PID: 4025 Comm: kworker/u5:2 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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+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:7770 [inline]
 l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7823
 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8535
 hci_acldata_packet net/bluetooth/hci_core.c:4969 [inline]
 hci_rx_work+0x3a0/0x7c4 net/bluetooth/hci_core.c:5160
 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
==================================================================
BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
BUG: KASAN: use-after-free in do_raw_spin_lock+0x244/0x35c kernel/locking/spinlock_debug.c:114
Read of size 4 at addr ffff0000d8e0a08c by task kworker/u5:2/4025

CPU: 1 PID: 4025 Comm: kworker/u5:2 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308
 debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
 do_raw_spin_lock+0x244/0x35c kernel/locking/spinlock_debug.c:114
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x12c/0x1c4 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 __lock_sock+0x170/0x2d4 net/core/sock.c:2701
 lock_sock_nested+0x138/0x1ec net/core/sock.c:3255
 lock_sock include/net/sock.h:1676 [inline]
 l2cap_sock_recv_cb+0x5c/0x1c0 net/bluetooth/l2cap_sock.c:1499
 l2cap_conless_channel net/bluetooth/l2cap_core.c:7769 [inline]
 l2cap_recv_frame+0xeb4/0x6c28 net/bluetooth/l2cap_core.c:7823
 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8535
 hci_acldata_packet net/bluetooth/hci_core.c:4969 [inline]
 hci_rx_work+0x3a0/0x7c4 net/bluetooth/hci_core.c:5160
 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

Allocated by task 4266:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x29c/0x4c8 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 sk_prot_alloc+0xc4/0x1f0 net/core/sock.c:1863
 sk_alloc+0x40/0x3e0 net/core/sock.c:1916
 l2cap_sock_alloc net/bluetooth/l2cap_sock.c:1861 [inline]
 l2cap_sock_create+0x140/0x33c net/bluetooth/l2cap_sock.c:1907
 bt_sock_create+0x14c/0x248 net/bluetooth/af_bluetooth.c:130
 __sock_create+0x43c/0x884 net/socket.c:1486
 sock_create net/socket.c:1537 [inline]
 __sys_socket+0x168/0x310 net/socket.c:1579
 __do_sys_socket net/socket.c:1588 [inline]
 __se_sys_socket net/socket.c:1586 [inline]
 __arm64_sys_socket+0x7c/0x94 net/socket.c:1586
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Freed by task 4266:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0x178/0x410 mm/slub.c:4559
 sk_prot_free net/core/sock.c:1899 [inline]
 __sk_destruct+0x418/0x600 net/core/sock.c:1985
 sk_destruct net/core/sock.c:2000 [inline]
 __sk_free+0x37c/0x4e8 net/core/sock.c:2011
 sk_free+0x68/0xdc net/core/sock.c:2022
 sock_put include/net/sock.h:1921 [inline]
 l2cap_sock_kill+0x114/0x228 net/bluetooth/l2cap_sock.c:1258
 l2cap_sock_release+0x138/0x1b4 net/bluetooth/l2cap_sock.c:1429
 __sock_release net/socket.c:649 [inline]
 sock_close+0xb8/0x1fc net/socket.c:1336
 __fput+0x1c4/0x800 fs/file_table.c:280
 ____fput+0x20/0x30 fs/file_table.c:308
 task_work_run+0x130/0x1e4 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000d8e0a000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 140 bytes inside of
 2048-byte region [ffff0000d8e0a000, ffff0000d8e0a800)
The buggy address belongs to the page:
page:00000000ab999386 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118e08
head:00000000ab999386 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002900
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d8e09f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d8e0a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d8e0a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff0000d8e0a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d8e0a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
=====================================
WARNING: bad unlock balance detected!
5.15.167-syzkaller #0 Not tainted
-------------------------------------
kworker/u5:2/4025 is trying to release lock (&chan->lock) at:
[<ffff800010e32abc>] l2cap_chan_unlock include/net/bluetooth/l2cap.h:860 [inline]
[<ffff800010e32abc>] l2cap_conless_channel net/bluetooth/l2cap_core.c:7770 [inline]
[<ffff800010e32abc>] l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7823
but there are no more locks to release!

other info that might help us debug this:
2 locks held by kworker/u5:2/4025:
 #0: ffff0000cbe5e138 ((wq_completion)hci0#2){+.+.}-{0:0}, at: process_one_work+0x66c/0x11b8 kernel/workqueue.c:2283
 #1: ffff80001ff57c00 ((work_completion)(&hdev->rx_work)){+.+.}-{0:0}, at: process_one_work+0x6ac/0x11b8 kernel/workqueue.c:2285

stack backtrace:
CPU: 1 PID: 4025 Comm: kworker/u5:2 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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+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:7770 [inline]
 l2cap_recv_frame+0xf60/0x6c28 net/bluetooth/l2cap_core.c:7823
 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8535
 hci_acldata_packet net/bluetooth/hci_core.c:4969 [inline]
 hci_rx_work+0x3a0/0x7c4 net/bluetooth/hci_core.c:5160
 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
==================================================================
BUG: KASAN: use-after-free in debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
BUG: KASAN: use-after-free in do_raw_spin_lock+0x244/0x35c kernel/locking/spinlock_debug.c:114
Read of size 4 at addr ffff0000d8e0a08c by task kworker/u5:2/4025

CPU: 1 PID: 4025 Comm: kworker/u5:2 Not tainted 5.15.167-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
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
 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0x174/0x1e4 mm/kasan/report.c:451
 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308
 debug_spin_lock_before kernel/locking/spinlock_debug.c:85 [inline]
 do_raw_spin_lock+0x244/0x35c kernel/locking/spinlock_debug.c:114
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline]
 _raw_spin_lock_bh+0x12c/0x1c4 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:368 [inline]
 __lock_sock+0x170/0x2d4 net/core/sock.c:2701
 lock_sock_nested+0x138/0x1ec net/core/sock.c:3255
 lock_sock include/net/sock.h:1676 [inline]
 l2cap_sock_recv_cb+0x5c/0x1c0 net/bluetooth/l2cap_sock.c:1499
 l2cap_conless_channel net/bluetooth/l2cap_core.c:7769 [inline]
 l2cap_recv_frame+0xeb4/0x6c28 net/bluetooth/l2cap_core.c:7823
 l2cap_recv_acldata+0x4f4/0x163c net/bluetooth/l2cap_core.c:8535
 hci_acldata_packet net/bluetooth/hci_core.c:4969 [inline]
 hci_rx_work+0x3a0/0x7c4 net/bluetooth/hci_core.c:5160
 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

Allocated by task 4266:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:434 [inline]
 ____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
 __kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
 kasan_kmalloc include/linux/kasan.h:264 [inline]
 __kmalloc+0x29c/0x4c8 mm/slub.c:4407
 kmalloc include/linux/slab.h:596 [inline]
 sk_prot_alloc+0xc4/0x1f0 net/core/sock.c:1863
 sk_alloc+0x40/0x3e0 net/core/sock.c:1916
 l2cap_sock_alloc net/bluetooth/l2cap_sock.c:1861 [inline]
 l2cap_sock_create+0x140/0x33c net/bluetooth/l2cap_sock.c:1907
 bt_sock_create+0x14c/0x248 net/bluetooth/af_bluetooth.c:130
 __sock_create+0x43c/0x884 net/socket.c:1486
 sock_create net/socket.c:1537 [inline]
 __sys_socket+0x168/0x310 net/socket.c:1579
 __do_sys_socket net/socket.c:1588 [inline]
 __se_sys_socket net/socket.c:1586 [inline]
 __arm64_sys_socket+0x7c/0x94 net/socket.c:1586
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

Freed by task 4266:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4c/0x84 mm/kasan/common.c:46
 kasan_set_free_info+0x28/0x4c mm/kasan/generic.c:360
 ____kasan_slab_free+0x118/0x164 mm/kasan/common.c:366
 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:374
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1705 [inline]
 slab_free_freelist_hook+0x128/0x1ec mm/slub.c:1731
 slab_free mm/slub.c:3499 [inline]
 kfree+0x178/0x410 mm/slub.c:4559
 sk_prot_free net/core/sock.c:1899 [inline]
 __sk_destruct+0x418/0x600 net/core/sock.c:1985
 sk_destruct net/core/sock.c:2000 [inline]
 __sk_free+0x37c/0x4e8 net/core/sock.c:2011
 sk_free+0x68/0xdc net/core/sock.c:2022
 sock_put include/net/sock.h:1921 [inline]
 l2cap_sock_kill+0x114/0x228 net/bluetooth/l2cap_sock.c:1258
 l2cap_sock_release+0x138/0x1b4 net/bluetooth/l2cap_sock.c:1429
 __sock_release net/socket.c:649 [inline]
 sock_close+0xb8/0x1fc net/socket.c:1336
 __fput+0x1c4/0x800 fs/file_table.c:280
 ____fput+0x20/0x30 fs/file_table.c:308
 task_work_run+0x130/0x1e4 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946
 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline]
 el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584

The buggy address belongs to the object at ffff0000d8e0a000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 140 bytes inside of
 2048-byte region [ffff0000d8e0a000, ffff0000d8e0a800)
The buggy address belongs to the page:
page:00000000ab999386 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118e08
head:00000000ab999386 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0002900
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000d8e09f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000d8e0a000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000d8e0a080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff0000d8e0a100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff0000d8e0a180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================