Extracting prog: 4m44.566526576s
Minimizing prog: 36m13.209130681s
Simplifying prog options: 0s
Extracting C: 1m57.191698542s
Simplifying C: 23m28.361430109s


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}}): openat$qat_adf_ctl-prctl$PR_SCHED_CORE-sendmsg$nl_route_sched-prlimit64-sched_setscheduler-getpid-sched_setaffinity-mmap-socketpair$unix-connect$unix-sendmmsg$unix-sched_setaffinity-recvmmsg-madvise-mount$binder-socketpair$unix-socket$kcm-ioctl$SNDRV_CTL_IOCTL_ELEM_READ-ioctl$IOCTL_STOP_ACCEL_DEV
detailed listing:
executing program 0:
r0 = openat$qat_adf_ctl(0xffffffffffffff9c, &(0x7f0000000240), 0x0, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
sendmsg$nl_route_sched(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000040)={&(0x7f00000000c0)=@newtaction={0xa4, 0x30, 0x1, 0x0, 0x25dfdbfc, {}, [{0x90, 0x1, [@m_ct={0x44, 0x2, 0x0, 0x0, {{0x7}, {0x1c, 0x2, 0x0, 0x1, [@TCA_CT_PARMS={0x18, 0x1, {0x9d, 0x11e41e7a, 0x20000000, 0x0, 0x100000f}}]}, {0x4}, {0xc, 0x7, {0x0, 0x1}}, {0xc, 0x8, {0x0, 0x2}}}}, @m_ife={0x48, 0x1, 0x0, 0x0, {{0x8}, {0x20, 0x2, 0x0, 0x1, [@TCA_IFE_PARMS={0x1c}]}, {0x4}, {0xc}, {0xc}}}]}]}, 0xa4}, 0x1, 0x0, 0x0, 0x804}, 0x0)
prlimit64(0x0, 0xe, &(0x7f0000000140)={0x8, 0x8b}, 0x0)
sched_setscheduler(0x0, 0x1, &(0x7f0000000080)=0x7)
r1 = getpid()
sched_setaffinity(0x0, 0x8, &(0x7f00000002c0)=0x2)
mmap(&(0x7f0000000000/0xb36000)=nil, 0xb36000, 0xb635773f06ebbeef, 0x8031, 0xffffffffffffffff, 0x0)
socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000280)={<r2=>0xffffffffffffffff, <r3=>0xffffffffffffffff})
connect$unix(r2, &(0x7f000057eff8)=@file={0x0, './file0\x00'}, 0x6e)
sendmmsg$unix(r3, &(0x7f0000000000), 0x400000000000041, 0x0)
sched_setaffinity(r1, 0x8, &(0x7f0000000240)=0x2)
recvmmsg(r2, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
madvise(&(0x7f0000bdc000/0x4000)=nil, 0x86ac726dff2f4713, 0xa)
mount$binder(0x0, &(0x7f0000000340)='./file0\x00', &(0x7f0000000400), 0x1000840, &(0x7f0000000440)=ANY=[@ANYBLOB="6d50783d303030303030303030303030e89a23553f95f74e93f2"])
socketpair$unix(0x1, 0x1, 0x0, &(0x7f0000000040))
socket$kcm(0x29, 0x5, 0x0)
ioctl$SNDRV_CTL_IOCTL_ELEM_READ(0xffffffffffffffff, 0xc2c45512, &(0x7f0000000640)={{0x7, 0x0, 0x0, 0x0, 'syz0\x00'}, 0x0, [0x0, 0xffffffff, 0xffbf, 0x8, 0xfffffffd, 0x80000001, 0x0, 0xfffffffe, 0xfffffffd, 0xfffffffc, 0x0, 0x400006, 0x0, 0x0, 0x0, 0x9, 0x0, 0xfffffffd, 0x9, 0x0, 0x0, 0x0, 0x4, 0x0, 0x0, 0x0, 0x0, 0x1, 0x0, 0x0, 0x0, 0xfffffffd, 0x0, 0x0, 0x7, 0x0, 0x0, 0x5, 0x0, 0x2, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x9, 0x40, 0x7fffffff, 0x0, 0x0, 0x2000, 0x6, 0x0, 0x8000, 0x0, 0x0, 0x0, 0x8, 0x0, 0x4, 0x20000000, 0x2, 0x3, 0x0, 0x0, 0x4, 0x0, 0x68, 0x0, 0x20000000, 0x3, 0x7fff, 0x0, 0x800, 0x402, 0x0, 0x8, 0x4, 0x8, 0x0, 0x0, 0x0, 0x7, 0x0, 0x408, 0x0, 0x0, 0x9, 0x101, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x7, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x6, 0xffffffff, 0x0, 0x0, 0x0, 0x0, 0x4, 0xfffffffd, 0x8000, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8000000, 0xfffffffc]})
ioctl$IOCTL_STOP_ACCEL_DEV(r0, 0x541b, 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}}): syz_init_net_socket$bt_hci-bind$bt_hci-socketpair$unix-connect$unix-sendmmsg$unix-recvmmsg-prctl$PR_SCHED_CORE-sched_setattr-inotify_init-socket$alg-bind$alg-setsockopt$ALG_SET_KEY-readlinkat-socket$nl_route-sendmsg$nl_route-bpf$BPF_RAW_TRACEPOINT_OPEN-bpf$PROG_LOAD-bpf$BPF_RAW_TRACEPOINT_OPEN-socket$netlink-openat$uhid-close_range-setsockopt$ALG_SET_KEY
detailed listing:
executing program 0:
syz_init_net_socket$bt_hci(0x1f, 0x3, 0x1)
bind$bt_hci(0xffffffffffffffff, &(0x7f0000000000)={0x1f, 0xffffffffffffffff, 0x3}, 0x6)
socketpair$unix(0x1, 0x3, 0x0, &(0x7f0000000080)={<r0=>0xffffffffffffffff, <r1=>0xffffffffffffffff})
connect$unix(r0, &(0x7f000057eff8)=@abs, 0x6e)
sendmmsg$unix(r1, &(0x7f00000bd000), 0x318, 0x0)
recvmmsg(r0, &(0x7f00000000c0), 0x10106, 0x2, 0x0)
prctl$PR_SCHED_CORE(0x3e, 0x1, 0x0, 0x2, 0x0)
sched_setattr(0x0, &(0x7f0000000100)={0x38, 0x5, 0x0, 0x2, 0x0, 0xb49, 0x9, 0x8, 0x0, 0x3}, 0x0)
inotify_init()
r2 = socket$alg(0x26, 0x5, 0x0)
bind$alg(r2, &(0x7f0000000140)={0x26, 'rng\x00', 0x0, 0x0, 'drbg_pr_ctr_aes192\x00'}, 0x58)
setsockopt$ALG_SET_KEY(r2, 0x117, 0x1, 0x0, 0x0)
readlinkat(r2, 0x0, &(0x7f00000040c0)=""/4096, 0x1000)
r3 = socket$nl_route(0x10, 0x3, 0x0)
sendmsg$nl_route(r3, &(0x7f0000000280)={0x0, 0x0, 0x0}, 0x48010)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f00000000c0)={0x0}, 0x18)
r4 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0xc, &(0x7f0000000480)=ANY=[@ANYBLOB="18000000000000000000000000000000850000006d000000180100002020702500000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000005000000b70300000000000085000000"], &(0x7f0000001480)='GPL\x00', 0x5, 0x0, 0x0, 0x41100, 0x0, '\x00', 0x0, @fallback=0x26, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
bpf$BPF_RAW_TRACEPOINT_OPEN(0x11, &(0x7f0000000000)={&(0x7f0000000380)='kfree\x00', r4, 0x0, 0x4804}, 0x18)
r5 = socket$netlink(0x10, 0x3, 0x0)
openat$uhid(0xffffffffffffff9c, &(0x7f0000000400), 0x2, 0x0)
close_range(r5, 0xffffffffffffffff, 0x0)
setsockopt$ALG_SET_KEY(r2, 0x117, 0x1, &(0x7f0000000100), 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}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r2, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
single: successfully extracted reproducer
found reproducer with 13 syscalls
minimizing guilty program
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
socket$inet(0x2, 0x2, 0x1)
r0 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r1, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r1, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r1, 0x60}], 0x3, 0x0, 0x0, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r2, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
close_range(r0, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r2, 0x90004)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-syz_init_net_socket$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
listen(r2, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-socket$nl_generic-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
socket$nl_generic(0x10, 0x3, 0x10)
bind$bt_l2cap(0xffffffffffffffff, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(0xffffffffffffffff, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {0xffffffffffffffff, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-socket$nl_netfilter-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
socket$nl_netfilter(0x10, 0x3, 0xc)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r2, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-sendmsg$IPSET_CMD_CREATE-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = socket$nl_netfilter(0x10, 0x3, 0xc)
sendmsg$IPSET_CMD_CREATE(r1, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000480)=ANY=[@ANYBLOB="4c00000002060108000034e40000000000000000050001000600000005000400000000000900020073797a3100000000050005000200000c12000300686173683a6e65742c706f7274"], 0x4c}}, 0x2)
r2 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r2, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r2, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r2, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-socket$nl_netfilter-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
socket$nl_netfilter(0x10, 0x3, 0xc)
r1 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r1, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r1, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r1, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-socket$inet-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = socket$inet(0x2, 0x2, 0x1)
r1 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r1, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r1, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r1, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(r0, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-socket$inet-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
socket$inet(0x2, 0x2, 0x6a113fc2)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$PROG_LOAD-syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
bpf$PROG_LOAD(0x5, &(0x7f00000006c0)={0x4, 0x5, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94)
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, 0x0, 0x0)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(0x0, 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(0x0, 0x0, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program did not crash
testing program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0), 0x0, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
simplifying C reproducer
testing compiled C program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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 CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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: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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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: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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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: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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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:false IEEE802154:true 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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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:false IEEE802154:true 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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing compiled C program (duration=45.555179839s, {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:false IEEE802154:true 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$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program did not crash
testing compiled C program (duration=45.555179839s, {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:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
testing program (duration=45.555179839s, {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:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
validation run: crashed=true
testing program (duration=45.555179839s, {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:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: wild-memory-access Read in l2cap_connect_cfm
validation run: crashed=true
testing program (duration=45.555179839s, {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:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_init_net_socket$bt_l2cap-bind$bt_l2cap-listen-syz_emit_vhci-ppoll-close_range
detailed listing:
executing program 0:
r0 = syz_init_net_socket$bt_l2cap(0x1f, 0x5, 0x0)
bind$bt_l2cap(r0, &(0x7f0000000000)={0x1f, 0x0, @any, 0x4, 0x1}, 0xe)
listen(r0, 0x90004)
syz_emit_vhci(&(0x7f0000000100)=ANY=[@ANYBLOB="043e130100c90001"], 0x16)
ppoll(&(0x7f00000000c0)=[{0xffffffffffffffff, 0x80}, {}, {r0, 0x60}], 0x3, 0x0, 0x0, 0x0)
close_range(0xffffffffffffffff, 0xffffffffffffffff, 0x0)

program crashed: KASAN: use-after-free Read in l2cap_connect_cfm
validation run: crashed=true
reproducing took 1h12m49.768172503s
repro crashed as (corrupted=false):
 </TASK>
kobject_add_internal failed for hci0:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
==================================================================
BUG: KASAN: use-after-free in l2cap_conn_ready net/bluetooth/l2cap_core.c:1758 [inline]
BUG: KASAN: use-after-free in l2cap_connect_cfm+0x6ff/0x10d0 net/bluetooth/l2cap_core.c:8320
Read of size 8 at addr ffff88807bfde488 by task kworker/u5:1/4264

CPU: 0 PID: 4264 Comm: kworker/u5:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1758 [inline]
 l2cap_connect_cfm+0x6ff/0x10d0 net/bluetooth/l2cap_core.c:8320
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 4264:
 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 mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 l2cap_chan_create+0x4c/0x730 net/bluetooth/l2cap_core.c:469
 l2cap_sock_alloc+0x13a/0x200 net/bluetooth/l2cap_sock.c:1882
 l2cap_sock_new_connection_cb+0xd1/0x1c0 net/bluetooth/l2cap_sock.c:1479
 l2cap_connect_cfm+0x35d/0x10d0 net/bluetooth/l2cap_core.c:8303
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Freed by task 4357:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4564
 l2cap_sock_cleanup_listen+0xea/0x270 net/bluetooth/l2cap_sock.c:1462
 l2cap_sock_release+0x66/0x1e0 net/bluetooth/l2cap_sock.c:1420
 __sock_release net/socket.c:649 [inline]
 sock_close+0xd5/0x240 net/socket.c:1336
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88807bfde000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1160 bytes inside of
 2048-byte region [ffff88807bfde000, ffff88807bfde800)
The buggy address belongs to the page:
page:ffffea0001eff600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7bfd8
head:ffffea0001eff600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888016842000
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 4264, ts 80764463869, free_ts 80463257214
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 alloc_slab_page mm/slub.c:1780 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc_trace+0x1a5/0x2a0 mm/slub.c:3250
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 l2cap_chan_create+0x4c/0x730 net/bluetooth/l2cap_core.c:469
 l2cap_sock_alloc+0x13a/0x200 net/bluetooth/l2cap_sock.c:1882
 l2cap_sock_new_connection_cb+0xd1/0x1c0 net/bluetooth/l2cap_sock.c:1479
 l2cap_connect_cfm+0x35d/0x10d0 net/bluetooth/l2cap_core.c:8303
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 free_slab mm/slub.c:2020 [inline]
 discard_slab mm/slub.c:2026 [inline]
 __unfreeze_partials+0x1a5/0x200 mm/slub.c:2512
 put_cpu_partial+0x12d/0x190 mm/slub.c:2592
 qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
 ptlock_alloc+0x1c/0x60 mm/memory.c:5556
 ptlock_init include/linux/mm.h:2241 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2268 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0xc5/0x2f0 arch/x86/mm/pgtable.c:33
 do_fault_around mm/memory.c:4237 [inline]
 do_read_fault mm/memory.c:4258 [inline]
 do_fault mm/memory.c:4392 [inline]
 handle_pte_fault mm/memory.c:4650 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x2518/0x43c0 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606

Memory state around the buggy address:
 ffff88807bfde380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807bfde400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807bfde480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88807bfde500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807bfde580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
 </TASK>
kobject_add_internal failed for hci0:201 with -EEXIST, don't try to register things with the same name in the same directory.
Bluetooth: hci0: failed to register connection device
==================================================================
BUG: KASAN: use-after-free in l2cap_conn_ready net/bluetooth/l2cap_core.c:1758 [inline]
BUG: KASAN: use-after-free in l2cap_connect_cfm+0x6ff/0x10d0 net/bluetooth/l2cap_core.c:8320
Read of size 8 at addr ffff88807bfde488 by task kworker/u5:1/4264

CPU: 0 PID: 4264 Comm: kworker/u5:1 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
Workqueue: hci0 hci_rx_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106
 print_address_description+0x60/0x2d0 mm/kasan/report.c:248
 __kasan_report mm/kasan/report.c:434 [inline]
 kasan_report+0xdf/0x130 mm/kasan/report.c:451
 l2cap_conn_ready net/bluetooth/l2cap_core.c:1758 [inline]
 l2cap_connect_cfm+0x6ff/0x10d0 net/bluetooth/l2cap_core.c:8320
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>

Allocated by task 4264:
 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 mm/kasan/common.c:513 [inline]
 __kasan_kmalloc+0xb5/0xf0 mm/kasan/common.c:522
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 l2cap_chan_create+0x4c/0x730 net/bluetooth/l2cap_core.c:469
 l2cap_sock_alloc+0x13a/0x200 net/bluetooth/l2cap_sock.c:1882
 l2cap_sock_new_connection_cb+0xd1/0x1c0 net/bluetooth/l2cap_sock.c:1479
 l2cap_connect_cfm+0x35d/0x10d0 net/bluetooth/l2cap_core.c:8303
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287

Freed by task 4357:
 kasan_save_stack mm/kasan/common.c:38 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:46
 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360
 ____kasan_slab_free+0xd5/0x110 mm/kasan/common.c:366
 kasan_slab_free include/linux/kasan.h:230 [inline]
 slab_free_hook mm/slub.c:1710 [inline]
 slab_free_freelist_hook+0xea/0x170 mm/slub.c:1736
 slab_free mm/slub.c:3504 [inline]
 kfree+0xef/0x2a0 mm/slub.c:4564
 l2cap_sock_cleanup_listen+0xea/0x270 net/bluetooth/l2cap_sock.c:1462
 l2cap_sock_release+0x66/0x1e0 net/bluetooth/l2cap_sock.c:1420
 __sock_release net/socket.c:649 [inline]
 sock_close+0xd5/0x240 net/socket.c:1336
 __fput+0x234/0x930 fs/file_table.c:311
 task_work_run+0x125/0x1a0 kernel/task_work.c:188
 tracehook_notify_resume include/linux/tracehook.h:189 [inline]
 exit_to_user_mode_loop+0x10f/0x130 kernel/entry/common.c:181
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:214
 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
 syscall_exit_to_user_mode+0x16/0x40 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0

The buggy address belongs to the object at ffff88807bfde000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 1160 bytes inside of
 2048-byte region [ffff88807bfde000, ffff88807bfde800)
The buggy address belongs to the page:
page:ffffea0001eff600 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x7bfd8
head:ffffea0001eff600 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888016842000
raw: 0000000000000000 0000000080080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 4264, ts 80764463869, free_ts 80463257214
 prep_new_page mm/page_alloc.c:2426 [inline]
 get_page_from_freelist+0x1b77/0x1c60 mm/page_alloc.c:4192
 __alloc_pages+0x1e1/0x470 mm/page_alloc.c:5487
 alloc_slab_page mm/slub.c:1780 [inline]
 allocate_slab mm/slub.c:1917 [inline]
 new_slab+0xc0/0x4b0 mm/slub.c:1980
 ___slab_alloc+0x81e/0xdf0 mm/slub.c:3013
 __slab_alloc mm/slub.c:3100 [inline]
 slab_alloc_node mm/slub.c:3191 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc_trace+0x1a5/0x2a0 mm/slub.c:3250
 kmalloc include/linux/slab.h:604 [inline]
 kzalloc include/linux/slab.h:735 [inline]
 l2cap_chan_create+0x4c/0x730 net/bluetooth/l2cap_core.c:469
 l2cap_sock_alloc+0x13a/0x200 net/bluetooth/l2cap_sock.c:1882
 l2cap_sock_new_connection_cb+0xd1/0x1c0 net/bluetooth/l2cap_sock.c:1479
 l2cap_connect_cfm+0x35d/0x10d0 net/bluetooth/l2cap_core.c:8303
 hci_connect_cfm include/net/bluetooth/hci_core.h:1505 [inline]
 le_conn_complete_evt+0xdaf/0x1590 net/bluetooth/hci_event.c:5439
 hci_le_conn_complete_evt net/bluetooth/hci_event.c:5464 [inline]
 hci_le_meta_evt+0x289/0x3b80 net/bluetooth/hci_event.c:6186
 hci_event_packet+0xe05/0x12f0 net/bluetooth/hci_event.c:6535
 hci_rx_work+0x255/0xa10 net/bluetooth/hci_core.c:5160
 process_one_work+0x863/0x1000 kernel/workqueue.c:2310
 worker_thread+0xaa8/0x12a0 kernel/workqueue.c:2457
 kthread+0x436/0x520 kernel/kthread.c:334
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1340 [inline]
 free_pcp_prepare mm/page_alloc.c:1391 [inline]
 free_unref_page_prepare+0x637/0x6c0 mm/page_alloc.c:3317
 free_unref_page+0x94/0x280 mm/page_alloc.c:3396
 free_slab mm/slub.c:2020 [inline]
 discard_slab mm/slub.c:2026 [inline]
 __unfreeze_partials+0x1a5/0x200 mm/slub.c:2512
 put_cpu_partial+0x12d/0x190 mm/slub.c:2592
 qlist_free_all+0x35/0x90 mm/kasan/quarantine.c:176
 kasan_quarantine_reduce+0x150/0x160 mm/kasan/quarantine.c:283
 __kasan_slab_alloc+0x2f/0xd0 mm/kasan/common.c:444
 kasan_slab_alloc include/linux/kasan.h:254 [inline]
 slab_post_alloc_hook+0x4c/0x380 mm/slab.h:519
 slab_alloc_node mm/slub.c:3225 [inline]
 slab_alloc mm/slub.c:3233 [inline]
 kmem_cache_alloc+0x100/0x290 mm/slub.c:3238
 ptlock_alloc+0x1c/0x60 mm/memory.c:5556
 ptlock_init include/linux/mm.h:2241 [inline]
 pgtable_pte_page_ctor include/linux/mm.h:2268 [inline]
 __pte_alloc_one include/asm-generic/pgalloc.h:66 [inline]
 pte_alloc_one+0xc5/0x2f0 arch/x86/mm/pgtable.c:33
 do_fault_around mm/memory.c:4237 [inline]
 do_read_fault mm/memory.c:4258 [inline]
 do_fault mm/memory.c:4392 [inline]
 handle_pte_fault mm/memory.c:4650 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x2518/0x43c0 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357
 handle_page_fault arch/x86/mm/fault.c:1445 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606

Memory state around the buggy address:
 ffff88807bfde380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807bfde400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88807bfde480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88807bfde500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88807bfde580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================