Extracting prog: 3m35.026878758s
Minimizing prog: 20m14.491337444s
Simplifying prog options: 3m37.883394026s
Extracting C: 31.011873658s
Simplifying C: 0s


30 programs, 3 VMs, timeouts [15s 1m40s 6m0s]
extracting reproducer from 30 programs
single: executing 5 programs separately with timeout 15s
testing program (duration=15s, {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$nl_generic-syz_genetlink_get_family_id$ethtool-sendmsg$ETHTOOL_MSG_LINKMODES_SET-bind$l2tp6-connect$inet-bpf$PROG_LOAD-socket$nl_generic-close
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), 0xffffffffffffffff)
sendmsg$ETHTOOL_MSG_LINKMODES_SET(r0, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000001c0)={&(0x7f00000005c0)=ANY=[@ANYBLOB='L\x00\x00\x00', @ANYRES16=r1, @ANYBLOB], 0x4c}}, 0x0)
bind$l2tp6(0xffffffffffffffff, &(0x7f0000000000)={0xa, 0x0, 0x0, @empty}, 0x20)
connect$inet(0xffffffffffffffff, &(0x7f0000000080)={0x2, 0x0, @loopback}, 0x10)
r2 = bpf$PROG_LOAD(0x5, &(0x7f00000000c0)={0x11, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="18000000000000000000000000040000850000002a00000095"], &(0x7f0000000200)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x90)
socket$nl_generic(0x10, 0x3, 0x10)
close(r2)

program did not crash
testing program (duration=15s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$MAP_CREATE_TAIL_CALL-socket$nl_route-socket$nl_route-socket-connect$tipc-sendmmsg$unix-syz_genetlink_get_family_id$team
detailed listing:
executing program 0:
bpf$MAP_CREATE_TAIL_CALL(0x0, &(0x7f0000000000)={0x3, 0x4, 0x4, 0xa, 0x0, 0xffffffffffffffff, 0x0, '\x00', 0x0, 0xffffffffffffffff, 0x0, 0x0, 0x20000006}, 0x48)
socket$nl_route(0x10, 0x3, 0x0)
socket$nl_route(0x10, 0x3, 0x0)
r0 = socket(0x1e, 0x1, 0x0)
connect$tipc(r0, &(0x7f0000000000)=@name={0x1e, 0x2, 0x0, {{0x1, 0x1}}}, 0x10)
sendmmsg$unix(r0, &(0x7f0000002d00)=[{{0x0, 0x0, 0x0, 0x2000000000000000}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, 0x0}}, {{0x0, 0x0, &(0x7f0000002840)=[{&(0x7f00000024c0)="90", 0xffffff1f}, {0x0}], 0x2}}], 0x5, 0x0)
syz_genetlink_get_family_id$team(&(0x7f0000000080), r0)

program did not crash
testing program (duration=15s, {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}}): mmap-openat$cgroup_ro-openat$cgroup_ro-bpf$MAP_CREATE_TAIL_CALL-bpf$PROG_LOAD-bpf$BPF_PROG_TEST_RUN-ioctl$FS_IOC_SETFLAGS-openat$cgroup_ro-openat$cgroup_ro-write$binfmt_script-write$cgroup_type
detailed listing:
executing program 0:
mmap(&(0x7f0000000000/0x400000)=nil, 0x400041, 0x3000003, 0x200000006c832, 0xffffffffffffffff, 0x0)
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000040)='memory.events\x00', 0x275a, 0x0)
r0 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f00000002c0)='memory.events\x00', 0x7a05, 0x1700)
bpf$MAP_CREATE_TAIL_CALL(0x0, &(0x7f0000001e00)={0x3, 0x4, 0x4, 0xa, 0x0, 0xffffffffffffffff, 0xb20, '\x00', 0x0, 0xffffffffffffffff, 0x3, 0x5, 0x4}, 0x48)
r1 = bpf$PROG_LOAD(0x5, &(0x7f0000000200)={0x4, 0xe, &(0x7f00000012c0)=ANY=[@ANYBLOB="b7020000910c4d00bfa30000000000000703000000feffff7a0af0ff0000000079a4f0ff00000000b7060000ffffffff2d6405000000000065040400010001010404000009000000b7030000000000006a0a00fe000000008500000032000000b700000001000000950000000000000075cdc4b57b0c65752a3ad50000ba7ddd0000cb4500639100002000000000000000ff7f0000b52f17cee19d0001000000000000000000cb04fcbb0b9bafe3ba431351a58a885ba9918d37b056b9bbd11b6b9f6cf7db6d574620260000000000008062938f65aac33c4d620de2c9b7dc10d7d31306f57606b83b994fb484510bef2e4872f5c2fe6faaf75e5cc47c739bb39aad16cc75fe369258673b5df11cc2afb53611cc32a790bc0b80e80eae8f5e64be2c9d2d29db3d36dd015c7bd3f15aa6aadbeab2a01685108e61aa000000000000000000000000008b798b4f7458d1863cc67c4c6a06e828e5216f601b19db1af1b5d356d0f062137d866d11be4ba3f0151fdbbd4e97d62ecc645e143a60f1c6edc76609073909826151e2b42bf0ed0c8cef3ba20400a00c87c493db845b10e9468bda6f82881eb8c9cfa72b08eecc952a3fd2c46f3c1cde71a19d1a2982492a210e00d2bfea3b8d188df2eff8d56aaae7d32a2e183722537395019f02ec4b85f60000faca088de9b26797a8446b16c28d85f225992dbdd5bb01ba51508951c7a7d6ca09f9c3a12912715649c2b1c7192a4251b59d378d0616a48c7957e122765c8b7e89eddfc3783f6c9129a7c5f8ee4191dc152f638f7eb12f63be72a3d817b324d6e417b1c2cbfdcada0a16e31790e26cf19588a7e0496ee2782224cf30f810da86cf1a3204f4c9404f5d7321a4fefc4d1cf9ffffffffffffff950000006b42077ca60fdecb2717e21f8f187b1866108b668c71e26032176066599783568628f0309c3a01716d3706e1fa89917e131f4034a8383e99c3568fd04201b37cd92ca6ebf94a6c880e9e7dc91e2b2d8310f7032775cfd756d2f87b039d5430b3c6643e9146d2478ce31344b554aca78a0000000000000000000000000000137c06e0597a54fb1ec52a8c44a6d8ec2a839bad84f98e01acae55898409fc0d6e2387d0f990e0aa4d2c9ed60a61e3ea4868066d2b9ef3b1b507f49287267ea77d7d286639228c537f92510475f6a4e4d7089b336df3e25990002e3e8e7724c731e8f37f0f3ee24e598740c593f96ceae65a7d3275e8584de7beba41017523c56ef44a8c326a7a247ccb16ffb435cf4b85bdbcd4facc7bfa3f4c475c33f71b6b20a78b935d063a2a9800995367a94bc39c7a5e6e8adc7698968c49e48ad2b52f12ef51f1417af0bd2b610b34c022befd95e5fa9233f412a05ea3be44e9"], &(0x7f0000000340)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, 0x0, 0xffffffffffffffff, 0x8, &(0x7f0000000000), 0x8, 0x10, &(0x7f0000000100), 0x10}, 0x14)
bpf$BPF_PROG_TEST_RUN(0xa, &(0x7f0000000240)={r1, 0x1f2f, 0xf, 0x3253, &(0x7f00000007c0)="9f44948721919580684010a408a9", 0x0, 0x241, 0x0, 0xb1, 0x0, &(0x7f0000000700)="389ceff69d08b0af1cc71b6262d50660bbaf31a7f8cd6a6f911beb65d5fe6b54bf21a66489121f24fefd198059288c9b735e1898e77a7469489a249292c02a72bc193a3008ebdbf4e9dd4ee8fcceef55402c913c8dd0ebece1330aaa93ece835c5044a246a5967e3acd7c950b3b19f351830e545eb9bc3a9c6dd22ce97f1f857cfe8b68a2370b69ea336006b589368f92deb68f3dfc6f2bfee09f8342da437fce5dcdf658e453e3132bb42067575318c39"}, 0x23)
ioctl$FS_IOC_SETFLAGS(r0, 0x40086602, &(0x7f0000000000))
r2 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000140)='memory.events\x00', 0x7a05, 0x1700)
r3 = openat$cgroup_ro(r2, &(0x7f0000000080)='cpuacct.usage_sys\x00', 0x275a, 0x0)
write$binfmt_script(r3, &(0x7f0000000100), 0xfecc)
write$cgroup_type(r2, &(0x7f0000000000), 0x182000)

program did not crash
testing program (duration=15s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD-socket$packet-ioctl$sock_SIOCGIFINDEX-setsockopt$packet_int-setsockopt$packet_int-sendto$packet
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)
r8 = socket$packet(0x11, 0x3, 0x300)
ioctl$sock_SIOCGIFINDEX(r8, 0x8933, &(0x7f0000000040)={'batadv_slave_1\x00', <r9=>0x0})
setsockopt$packet_int(r8, 0x107, 0x14, &(0x7f0000000480)=0x102, 0x4)
setsockopt$packet_int(r8, 0x107, 0xf, &(0x7f0000000080)=0xf3e, 0x62)
sendto$packet(r8, &(0x7f00000000c0)="3f035808260712002c3a1e0089e9aaa911d7c2290f0086dd1327c9167c643c4a1b7880610cc96655b1b141ab059b24d0fbc50df71548a3f6c5609063382a0c152bfdf9435e3ffe46", 0xe90c, 0xa0c4, &(0x7f0000000540)={0xa, 0x0, r9, 0x1, 0x0, 0x6, @multicast}, 0x14)

program crashed: KASAN: slab-use-after-free Read in l2tp_tunnel_del_work
single: successfully extracted reproducer
found reproducer with 24 syscalls
minimizing guilty program
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD-socket$packet-ioctl$sock_SIOCGIFINDEX-setsockopt$packet_int-setsockopt$packet_int
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)
r8 = socket$packet(0x11, 0x3, 0x300)
ioctl$sock_SIOCGIFINDEX(r8, 0x8933, &(0x7f0000000040)={'batadv_slave_1\x00'})
setsockopt$packet_int(r8, 0x107, 0x14, &(0x7f0000000480)=0x102, 0x4)
setsockopt$packet_int(r8, 0x107, 0xf, &(0x7f0000000080)=0xf3e, 0x62)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD-socket$packet-ioctl$sock_SIOCGIFINDEX-setsockopt$packet_int
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)
r8 = socket$packet(0x11, 0x3, 0x300)
ioctl$sock_SIOCGIFINDEX(r8, 0x8933, &(0x7f0000000040)={'batadv_slave_1\x00'})
setsockopt$packet_int(r8, 0x107, 0x14, &(0x7f0000000480)=0x102, 0x4)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD-socket$packet-ioctl$sock_SIOCGIFINDEX
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)
r8 = socket$packet(0x11, 0x3, 0x300)
ioctl$sock_SIOCGIFINDEX(r8, 0x8933, &(0x7f0000000040)={'batadv_slave_1\x00'})

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD-socket$packet
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)
socket$packet(0x11, 0x3, 0x300)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool-bpf$PROG_LOAD
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)
bpf$PROG_LOAD(0x5, &(0x7f0000000b40)={0x11, 0x8, 0x0, 0x0}, 0x90)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE-syz_genetlink_get_family_id$ethtool
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)
syz_genetlink_get_family_id$ethtool(&(0x7f0000000000), r0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet-sendmsg$NL80211_CMD_NEW_INTERFACE
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
r1 = syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00', <r2=>0x0})
r3 = socket$kcm(0x10, 0x2, 0x4)
r4 = socket$pppl2tp(0x18, 0x1, 0x1)
r5 = socket$pppl2tp(0x18, 0x1, 0x1)
r6 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r5, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r6, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r4, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r7 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r7, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r7, 0x0)
getsockopt$bt_BT_SECURITY(r4, 0x111, 0x2, 0x0, 0x20001100)
close(r3)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r3, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)
sendmsg$NL80211_CMD_NEW_INTERFACE(r0, &(0x7f0000000240)={0x0, 0x0, &(0x7f0000000200)={&(0x7f0000000180)={0x44, r1, 0x1, 0x0, 0x0, {{}, {@void, @val={0x8, 0x3, r2}, @val={0xc}}}, [@NL80211_ATTR_IFNAME={0x14, 0x4, 'syzkaller1\x00'}, @NL80211_ATTR_IFTYPE={0x8, 0x5, 0x9}]}, 0x44}}, 0x0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm-sendmsg$inet
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
r1 = socket$kcm(0x10, 0x2, 0x4)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r4, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r5, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r5, 0x0)
getsockopt$bt_BT_SECURITY(r2, 0x111, 0x2, 0x0, 0x20001100)
close(r1)
socket$kcm(0x10, 0x2, 0x0)
sendmsg$inet(r1, &(0x7f0000000040)={0x0, 0x0, &(0x7f00000011c0)=[{&(0x7f0000000140)="5c00000011006bcc9e3be35c6e17aa31076b876c1d0000007ea60864160af36514001ac0040002000c000000040000000064bc24eab556a705251e618294ff0051f60a84c9f4d4938037e786a6d0001000000e4509c5bbcd72c6c953", 0x5c}], 0x1, 0x0, 0x0, 0x1f00c00e}, 0x0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close-socket$kcm
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
r1 = socket$kcm(0x10, 0x2, 0x4)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r4, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r5, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r5, 0x0)
getsockopt$bt_BT_SECURITY(r2, 0x111, 0x2, 0x0, 0x20001100)
close(r1)
socket$kcm(0x10, 0x2, 0x0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY-close
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
r1 = socket$kcm(0x10, 0x2, 0x4)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r4, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r5 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r5, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r5, 0x0)
getsockopt$bt_BT_SECURITY(r2, 0x111, 0x2, 0x0, 0x20001100)
close(r1)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap-getsockopt$bt_BT_SECURITY
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r4, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r4, 0x0)
getsockopt$bt_BT_SECURITY(r1, 0x111, 0x2, 0x0, 0x20001100)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script-mmap
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r4, &(0x7f0000000100), 0xfecc)
mmap(&(0x7f0000000000/0x3000)=nil, 0x3000, 0x1, 0x12, r4, 0x0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro-write$binfmt_script
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
r4 = openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)
write$binfmt_script(r4, &(0x7f0000000100), 0xfecc)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp-openat$cgroup_ro
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)
openat$cgroup_ro(0xffffffffffffff9c, &(0x7f0000000080)='memory.events\x00', 0x275a, 0x0)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)

program did not crash
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$pppl2tp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, 0xffffffffffffffff, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$kcm-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
socket$kcm(0x10, 0x2, 0x4)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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$sock_SIOCGIFINDEX_80211-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
ioctl$sock_SIOCGIFINDEX_80211(r0, 0x8933, &(0x7f0000000140)={'wlan0\x00'})
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r3, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
syz_genetlink_get_family_id$nl80211(&(0x7f0000000100), 0xffffffffffffffff)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$nl_generic-socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
socket$nl_generic(0x10, 0x3, 0x10)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
testing program (duration=22.5s, {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$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, 0x0, 0x0)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=22.5s, {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$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
program did not crash
simplifying guilty program options
testing program (duration=22.5s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
extracting C reproducer
testing compiled C program (duration=22.5s, {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}}): socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
program did not crash
testing program (duration=22.5s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program did not crash
testing program (duration=22.5s, {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}}): socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet_udp(0x2, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000980)=@pppol2tpin6={0x18, 0x1, {0x0, r2, 0x1, 0x0, 0x0, 0x0, {0xa, 0x0, 0x0, @local}}}, 0x32)
connect$pppl2tp(r0, &(0x7f0000000980)=@pppol2tp={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @empty}, 0x1, 0x3}}, 0x26)

program crashed: KASAN: slab-use-after-free Write in l2tp_session_delete
extracting C reproducer
testing compiled C program (duration=22.5s, {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}}): socket$pppl2tp-socket$pppl2tp-socket$inet_udp-connect$pppl2tp-connect$pppl2tp
program did not crash
reproducing took 28m48.341514839s
repro crashed as (corrupted=false):
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
BUG: KASAN: slab-use-after-free in l2tp_session_delete+0x28/0x9e0 net/l2tp/l2tp_core.c:1639
Write of size 8 at addr ffff88802df94008 by task kworker/u8:7/1098

CPU: 1 PID: 1098 Comm: kworker/u8:7 Not tainted 6.10.0-rc4-syzkaller-00836-gb0d3969d2b4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: l2tp l2tp_tunnel_del_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
 l2tp_session_delete+0x28/0x9e0 net/l2tp/l2tp_core.c:1639
 l2tp_tunnel_closeall net/l2tp/l2tp_core.c:1302 [inline]
 l2tp_tunnel_del_work+0x1cb/0x330 net/l2tp/l2tp_core.c:1334
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 5232:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4122 [inline]
 __kmalloc_noprof+0x1f9/0x400 mm/slub.c:4135
 kmalloc_noprof include/linux/slab.h:664 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 l2tp_session_create+0x3b/0xc20 net/l2tp/l2tp_core.c:1675
 pppol2tp_connect+0xca3/0x17a0 net/l2tp/l2tp_ppp.c:782
 __sys_connect_file net/socket.c:2049 [inline]
 __sys_connect+0x2df/0x310 net/socket.c:2066
 __do_sys_connect net/socket.c:2076 [inline]
 __se_sys_connect net/socket.c:2073 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2073
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 16:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4437 [inline]
 kfree+0x149/0x360 mm/slub.c:4558
 __sk_destruct+0x58/0x5f0 net/core/sock.c:2191
 rcu_do_batch kernel/rcu/tree.c:2535 [inline]
 rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2809
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:3072 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:3176
 pppol2tp_release+0x24b/0x350 net/l2tp/l2tp_ppp.c:457
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbc/0x240 net/socket.c:1421
 __fput+0x406/0x8b0 fs/file_table.c:422
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802df94000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 8 bytes inside of
 freed 1024-byte region [ffff88802df94000, ffff88802df94400)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802df95000 pfn:0x2df90
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000040 ffff888015041dc0 ffffea0001f55000 0000000000000003
raw: ffff88802df95000 000000000010000e 00000001ffffefff 0000000000000000
head: 00fff00000000040 ffff888015041dc0 ffffea0001f55000 0000000000000003
head: ffff88802df95000 000000000010000e 00000001ffffefff 0000000000000000
head: 00fff00000000003 ffffea0000b7e401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4940, tgid 4940 (sshd), ts 42698281154, free_ts 35088022936
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468
 prep_new_page mm/page_alloc.c:1476 [inline]
 get_page_from_freelist+0x2e43/0x2f00 mm/page_alloc.c:3420
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4678
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2265
 allocate_slab+0x5a/0x2f0 mm/slub.c:2428
 new_slab mm/slub.c:2481 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667
 __slab_alloc+0x58/0xa0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3989 [inline]
 __do_kmalloc_node mm/slub.c:4121 [inline]
 __kmalloc_noprof+0x257/0x400 mm/slub.c:4135
 kmalloc_noprof include/linux/slab.h:664 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 tomoyo_init_log+0x1b3e/0x2050 security/tomoyo/audit.c:275
 tomoyo_supervisor+0x38a/0x11f0 security/tomoyo/common.c:2089
 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
 tomoyo_env_perm+0x178/0x210 security/tomoyo/environ.c:63
 tomoyo_environ security/tomoyo/domain.c:672 [inline]
 tomoyo_find_next_domain+0x1384/0x1cf0 security/tomoyo/domain.c:878
 tomoyo_bprm_check_security+0x115/0x180 security/tomoyo/tomoyo.c:102
 security_bprm_check+0x65/0x90 security/security.c:1191
 search_binary_handler fs/exec.c:1785 [inline]
 exec_binprm fs/exec.c:1839 [inline]
 bprm_execve+0xa56/0x17c0 fs/exec.c:1891
 do_execveat_common+0x553/0x700 fs/exec.c:1998
page last free pid 4900 tgid 4900 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1088 [inline]
 free_unref_page+0xd22/0xea0 mm/page_alloc.c:2583
 discard_slab mm/slub.c:2527 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:2995
 put_cpu_partial+0x17c/0x250 mm/slub.c:3070
 __slab_free+0x2ea/0x3d0 mm/slub.c:4307
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3941 [inline]
 slab_alloc_node mm/slub.c:4001 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4008
 getname_flags+0xbd/0x4f0 fs/namei.c:139
 user_path_at_empty+0x2c/0x60 fs/namei.c:2928
 user_path_at include/linux/namei.h:58 [inline]
 do_faccessat+0x5e5/0xb80 fs/open.c:490
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802df93f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802df93f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802df94000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88802df94080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802df94100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================

final repro crashed as (corrupted=false):
wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50
wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50
==================================================================
BUG: KASAN: slab-use-after-free in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: slab-use-after-free in test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
BUG: KASAN: slab-use-after-free in l2tp_session_delete+0x28/0x9e0 net/l2tp/l2tp_core.c:1639
Write of size 8 at addr ffff88802df94008 by task kworker/u8:7/1098

CPU: 1 PID: 1098 Comm: kworker/u8:7 Not tainted 6.10.0-rc4-syzkaller-00836-gb0d3969d2b4d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: l2tp l2tp_tunnel_del_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x169/0x550 mm/kasan/report.c:488
 kasan_report+0x143/0x180 mm/kasan/report.c:601
 kasan_check_range+0x282/0x290 mm/kasan/generic.c:189
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 test_and_set_bit include/asm-generic/bitops/instrumented-atomic.h:71 [inline]
 l2tp_session_delete+0x28/0x9e0 net/l2tp/l2tp_core.c:1639
 l2tp_tunnel_closeall net/l2tp/l2tp_core.c:1302 [inline]
 l2tp_tunnel_del_work+0x1cb/0x330 net/l2tp/l2tp_core.c:1334
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd70 kernel/workqueue.c:3393
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Allocated by task 5232:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4122 [inline]
 __kmalloc_noprof+0x1f9/0x400 mm/slub.c:4135
 kmalloc_noprof include/linux/slab.h:664 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 l2tp_session_create+0x3b/0xc20 net/l2tp/l2tp_core.c:1675
 pppol2tp_connect+0xca3/0x17a0 net/l2tp/l2tp_ppp.c:782
 __sys_connect_file net/socket.c:2049 [inline]
 __sys_connect+0x2df/0x310 net/socket.c:2066
 __do_sys_connect net/socket.c:2076 [inline]
 __se_sys_connect net/socket.c:2073 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2073
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Freed by task 16:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2196 [inline]
 slab_free mm/slub.c:4437 [inline]
 kfree+0x149/0x360 mm/slub.c:4558
 __sk_destruct+0x58/0x5f0 net/core/sock.c:2191
 rcu_do_batch kernel/rcu/tree.c:2535 [inline]
 rcu_core+0xafd/0x1830 kernel/rcu/tree.c:2809
 handle_softirqs+0x2c4/0x970 kernel/softirq.c:554
 run_ksoftirqd+0xca/0x130 kernel/softirq.c:928
 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Last potentially related work creation:
 kasan_save_stack+0x3f/0x60 mm/kasan/common.c:47
 __kasan_record_aux_stack+0xac/0xc0 mm/kasan/generic.c:541
 __call_rcu_common kernel/rcu/tree.c:3072 [inline]
 call_rcu+0x167/0xa70 kernel/rcu/tree.c:3176
 pppol2tp_release+0x24b/0x350 net/l2tp/l2tp_ppp.c:457
 __sock_release net/socket.c:659 [inline]
 sock_close+0xbc/0x240 net/socket.c:1421
 __fput+0x406/0x8b0 fs/file_table.c:422
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

The buggy address belongs to the object at ffff88802df94000
 which belongs to the cache kmalloc-1k of size 1024
The buggy address is located 8 bytes inside of
 freed 1024-byte region [ffff88802df94000, ffff88802df94400)

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff88802df95000 pfn:0x2df90
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
ksm flags: 0xfff00000000040(head|node=0|zone=1|lastcpupid=0x7ff)
page_type: 0xffffefff(slab)
raw: 00fff00000000040 ffff888015041dc0 ffffea0001f55000 0000000000000003
raw: ffff88802df95000 000000000010000e 00000001ffffefff 0000000000000000
head: 00fff00000000040 ffff888015041dc0 ffffea0001f55000 0000000000000003
head: ffff88802df95000 000000000010000e 00000001ffffefff 0000000000000000
head: 00fff00000000003 ffffea0000b7e401 ffffffffffffffff 0000000000000000
head: 0000000000000008 0000000000000000 00000000ffffffff 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 0xd2040(__GFP_IO|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC), pid 4940, tgid 4940 (sshd), ts 42698281154, free_ts 35088022936
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468
 prep_new_page mm/page_alloc.c:1476 [inline]
 get_page_from_freelist+0x2e43/0x2f00 mm/page_alloc.c:3420
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4678
 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:296 [inline]
 alloc_slab_page+0x5f/0x120 mm/slub.c:2265
 allocate_slab+0x5a/0x2f0 mm/slub.c:2428
 new_slab mm/slub.c:2481 [inline]
 ___slab_alloc+0xcd1/0x14b0 mm/slub.c:3667
 __slab_alloc+0x58/0xa0 mm/slub.c:3757
 __slab_alloc_node mm/slub.c:3810 [inline]
 slab_alloc_node mm/slub.c:3989 [inline]
 __do_kmalloc_node mm/slub.c:4121 [inline]
 __kmalloc_noprof+0x257/0x400 mm/slub.c:4135
 kmalloc_noprof include/linux/slab.h:664 [inline]
 kzalloc_noprof include/linux/slab.h:778 [inline]
 tomoyo_init_log+0x1b3e/0x2050 security/tomoyo/audit.c:275
 tomoyo_supervisor+0x38a/0x11f0 security/tomoyo/common.c:2089
 tomoyo_audit_env_log security/tomoyo/environ.c:36 [inline]
 tomoyo_env_perm+0x178/0x210 security/tomoyo/environ.c:63
 tomoyo_environ security/tomoyo/domain.c:672 [inline]
 tomoyo_find_next_domain+0x1384/0x1cf0 security/tomoyo/domain.c:878
 tomoyo_bprm_check_security+0x115/0x180 security/tomoyo/tomoyo.c:102
 security_bprm_check+0x65/0x90 security/security.c:1191
 search_binary_handler fs/exec.c:1785 [inline]
 exec_binprm fs/exec.c:1839 [inline]
 bprm_execve+0xa56/0x17c0 fs/exec.c:1891
 do_execveat_common+0x553/0x700 fs/exec.c:1998
page last free pid 4900 tgid 4900 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1088 [inline]
 free_unref_page+0xd22/0xea0 mm/page_alloc.c:2583
 discard_slab mm/slub.c:2527 [inline]
 __put_partials+0xeb/0x130 mm/slub.c:2995
 put_cpu_partial+0x17c/0x250 mm/slub.c:3070
 __slab_free+0x2ea/0x3d0 mm/slub.c:4307
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x9e/0x140 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:322
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3941 [inline]
 slab_alloc_node mm/slub.c:4001 [inline]
 kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4008
 getname_flags+0xbd/0x4f0 fs/namei.c:139
 user_path_at_empty+0x2c/0x60 fs/namei.c:2928
 user_path_at include/linux/namei.h:58 [inline]
 do_faccessat+0x5e5/0xb80 fs/open.c:490
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Memory state around the buggy address:
 ffff88802df93f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff88802df93f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88802df94000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                      ^
 ffff88802df94080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88802df94100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================