Extracting prog: 1m0.693544329s
Minimizing prog: 11m58.418198739s
Simplifying prog options: 0s
Extracting C: 43.414183452s
Simplifying C: 5m32.361304799s


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:false 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}}): sendto$packet-syz_usb_connect$hid-syz_usb_control_io$hid-syz_usb_control_io-syz_open_dev$hiddev-ioctl$HIDIOCSREPORT
detailed listing:
executing program 0:
sendto$packet(0xffffffffffffffff, 0x0, 0x0, 0x48040, &(0x7f00000001c0)={0x11, 0x7, 0x0, 0x1, 0x6, 0x6, @link_local={0x1, 0x80, 0xc2, 0x0, 0x0, 0x1}}, 0x14)
r0 = syz_usb_connect$hid(0x0, 0x36, &(0x7f0000000180)=ANY=[@ANYBLOB="12013f00000000407f04ffff000000000001090224000100000000090400001503000000092140000001220f000905", @ANYRES64], 0x0)
syz_usb_control_io$hid(r0, 0x0, 0x0)
syz_usb_control_io(r0, &(0x7f0000000140)={0x2c, &(0x7f0000000040)=ANY=[@ANYBLOB="00000f00000009003d140f3c369197d09647190890"], 0x0, 0x0, 0x0, 0x0}, 0x0)
r1 = syz_open_dev$hiddev(&(0x7f0000000100), 0x0, 0x0)
ioctl$HIDIOCSREPORT(r1, 0x40184810, &(0x7f00000001c0)={0x2, 0xffffffff})

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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000800)=ANY=[@ANYBLOB="b80000001300e9990500000000000000fc000000000000000000000000000000fc00000000000000000000000000000000000000000000000a0030"], 0xb8}, 0x1, 0x0, 0x0, 0x14}, 0x4000)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r3, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
single: successfully extracted reproducer
found reproducer with 16 syscalls
minimizing guilty program
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000800)=ANY=[@ANYBLOB="b80000001300e9990500000000000000fc000000000000000000000000000000fc00000000000000000000000000000000000000000000000a0030"], 0xb8}, 0x1, 0x0, 0x0, 0x14}, 0x4000)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)

program did not crash
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000800)=ANY=[@ANYBLOB="b80000001300e9990500000000000000fc000000000000000000000000000000fc00000000000000000000000000000000000000000000000a0030"], 0xb8}, 0x1, 0x0, 0x0, 0x14}, 0x4000)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
ioctl$SIOCGIFMTU(r3, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program did not crash
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-sendmsg$nl_xfrm-socket$pppl2tp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000800)=ANY=[@ANYBLOB="b80000001300e9990500000000000000fc000000000000000000000000000000fc00000000000000000000000000000000000000000000000a0030"], 0xb8}, 0x1, 0x0, 0x0, 0x14}, 0x4000)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
connect$pppl2tp(r3, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, 0xffffffffffffffff, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r3, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program did not crash
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-sendmsg$nl_xfrm-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000440)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000800)=ANY=[@ANYBLOB="b80000001300e9990500000000000000fc000000000000000000000000000000fc00000000000000000000000000000000000000000000000a0030"], 0xb8}, 0x1, 0x0, 0x0, 0x14}, 0x4000)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(0xffffffffffffffff, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program did not crash
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-sendmsg$nl_route-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$netlink(0x10, 0x3, 0x0)
sendmsg$nl_route(r2, &(0x7f00000000c0)={0x0, 0x0, &(0x7f0000001140)={&(0x7f0000000100)=@newlink={0x34, 0x12, 0x503, 0x0, 0x0, {}, [@IFLA_LINKINFO={0x14, 0x12, 0x0, 0x1, @macsec={{0x4}, {0x4}}}]}, 0x34}}, 0x0)
r3 = socket$pppl2tp(0x18, 0x1, 0x1)
r4 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r3, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r3, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$netlink-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
socket$netlink(0x10, 0x3, 0x0)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r2, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
sendmsg$nl_xfrm(r1, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc0000000000"], 0xb8}}, 0x20004000)
r2 = socket$pppl2tp(0x18, 0x1, 0x1)
r3 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r2, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r2, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(0xffffffffffffffff, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300000200000000fddbdf257f0000010b9cf2065905b43b000000000000000000000000000000000000000000000004000000000a0060", @ANYRES32=0xee01, @ANYBLOB="00000000000000000400000000000000000000000000000000000000000000004000000000000000fdffffffffffffff02000000000000000000000000000000feffffffffffffff000000000000000000000000000000000000000000000000090000000000004000010200"], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x50)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-ioctl$sock_SIOCGIFINDEX-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, 0x0)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
socket$nl_xfrm(0x10, 0x3, 0x6)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc00"/27], 0xb8}, 0x1, 0x0, 0x0, 0x80}, 0x0)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
sendmsg$nl_xfrm(r0, &(0x7f0000000580)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000000)=ANY=[@ANYBLOB="b80000001300e9990000000000000000fc000000000000000100000000000000ac1e000100000000000000000000000000000000000000000a0060"], 0xb8}}, 0x0)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Write in pppol2tp_release
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-sendmsg$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$nl_xfrm(0x10, 0x3, 0x6)
sendmsg$nl_xfrm(r0, 0x0, 0x0)
r1 = socket$pppl2tp(0x18, 0x1, 0x1)
r2 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r1, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r1, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.689933334s, {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:false 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}}): socket$nl_xfrm-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
socket$nl_xfrm(0x10, 0x3, 0x6)
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue
testing program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, 0x0, 0x0)
ioctl$SIOCGIFMTU(r0, 0x8921, &(0x7f00000000c0)={'veth1_to_bridge\x00'})

program did not crash
testing program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
extracting C reproducer
testing compiled C program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
simplifying C reproducer
testing compiled C program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.689933334s, {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:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program did not crash
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Write in pppol2tp_release
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:false 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}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing compiled C program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
testing program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
testing program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, 0x0)

program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session
validation run: crashed=true
testing program (duration=33.689933334s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$SIOCGIFMTU
detailed listing:
executing program 0:
r0 = socket$pppl2tp(0x18, 0x1, 0x1)
r1 = socket$inet6_udp(0xa, 0x2, 0x0)
connect$pppl2tp(r0, &(0x7f0000000000)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev={0xac, 0x14, 0x14, 0xb}}, 0x2}}, 0x2e)
ioctl$SIOCGIFMTU(r0, 0x8921, 0x0)

program crashed: KASAN: use-after-free Write in pppol2tp_release
validation run: crashed=true
reproducing took 21m16.740641791s
repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff88810d562150 by task syz.2.17/375

CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x194/0x2d0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xf1/0x290 net/socket.c:1389
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcd9799ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffee9375218 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffee9375300 RCX: 00007fcd9799ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000006d6f R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd97c15fac R14: 00007fcd97c15fa8 R15: 00007fcd97c15fa0
 </TASK>

Allocated by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbe0 net/l2tp/l2tp_core.c:1609
 pppol2tp_connect+0xbef/0x1620 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2000 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2017
 __do_sys_connect net/socket.c:2027 [inline]
 __se_sys_connect net/socket.c:2024 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2024
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3f0/0x4e0 net/l2tp/l2tp_core.c:1582
 pppol2tp_release+0x185/0x2d0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xf1/0x290 net/socket.c:1389
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88810d562000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff88810d562000, ffff88810d562200)

The buggy address belongs to the physical page:
page:ffffea0004355800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d560
head:ffffea0004355800 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 8, tgid 8 (kworker/u4:0), ts 28026971189, free_ts 27022853655
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4585
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5929
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2020
 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 neigh_alloc net/core/neighbour.c:494 [inline]
 ___neigh_create+0x6f6/0x1e20 net/core/neighbour.c:648
 __neigh_create+0x31/0x40 net/core/neighbour.c:737
 ip6_finish_output2+0xa56/0x18a0 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5f9/0xbb0 net/ipv6/ip6_output.c:216
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1fa/0x410 net/ipv6/ip6_output.c:237
 dst_output include/net/dst.h:453 [inline]
 ip6_local_out+0x20f/0x3e0 net/ipv6/output_core.c:161
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x7f8/0x800 mm/page_alloc.c:3620
 free_unref_page+0x95/0x540 mm/page_alloc.c:3718
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6019
 __vunmap+0x9c0/0xb80 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xa35/0x2660 kernel/exit.c:886
 do_group_exit+0x225/0x2e0 kernel/exit.c:1029
 get_signal+0x13b5/0x1520 kernel/signal.c:2891
 arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff88810d562000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810d562080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88810d562100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88810d562180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810d562200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================

final repro crashed as (corrupted=false):
==================================================================
BUG: KASAN: use-after-free in instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
BUG: KASAN: use-after-free in atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
BUG: KASAN: use-after-free in __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
BUG: KASAN: use-after-free in mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
Write of size 8 at addr ffff88810d562150 by task syz.2.17/375

CPU: 0 PID: 375 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106
 print_address_description+0x71/0x200 mm/kasan/report.c:316
 print_report+0x4a/0x60 mm/kasan/report.c:420
 kasan_report+0x122/0x150 mm/kasan/report.c:524
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x249/0x2a0 mm/kasan/generic.c:189
 __kasan_check_write+0x14/0x20 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:102 [inline]
 atomic_long_try_cmpxchg_acquire include/linux/atomic/atomic-instrumented.h:1779 [inline]
 __mutex_trylock_fast kernel/locking/mutex.c:176 [inline]
 mutex_lock+0x86/0x1b0 kernel/locking/mutex.c:295
 pppol2tp_release+0x194/0x2d0 net/l2tp/l2tp_ppp.c:441
 __sock_release net/socket.c:652 [inline]
 sock_close+0xf1/0x290 net/socket.c:1389
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fcd9799ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffee9375218 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffee9375300 RCX: 00007fcd9799ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 0000000000006d6f R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b33120000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd97c15fac R14: 00007fcd97c15fa8 R15: 00007fcd97c15fa0
 </TASK>

Allocated by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_alloc_info+0x25/0x30 mm/kasan/generic.c:505
 ____kasan_kmalloc mm/kasan/common.c:380 [inline]
 __kasan_kmalloc+0x95/0xb0 mm/kasan/common.c:389
 kasan_kmalloc include/linux/kasan.h:212 [inline]
 __do_kmalloc_node mm/slab_common.c:938 [inline]
 __kmalloc+0xb1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 l2tp_session_create+0x38/0xbe0 net/l2tp/l2tp_core.c:1609
 pppol2tp_connect+0xbef/0x1620 net/l2tp/l2tp_ppp.c:771
 __sys_connect_file net/socket.c:2000 [inline]
 __sys_connect+0x3da/0x460 net/socket.c:2017
 __do_sys_connect net/socket.c:2027 [inline]
 __se_sys_connect net/socket.c:2024 [inline]
 __x64_sys_connect+0x7a/0x90 net/socket.c:2024
 x64_sys_call+0x88d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

Freed by task 375:
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 kasan_save_free_info+0x31/0x50 mm/kasan/generic.c:516
 ____kasan_slab_free+0x132/0x180 mm/kasan/common.c:242
 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:250
 kasan_slab_free include/linux/kasan.h:178 [inline]
 slab_free_hook mm/slub.c:1750 [inline]
 slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1776
 slab_free mm/slub.c:3712 [inline]
 __kmem_cache_free+0xb7/0x1b0 mm/slub.c:3728
 kfree+0x6f/0xf0 mm/slab_common.c:990
 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline]
 l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193
 l2tp_session_delete+0x3f0/0x4e0 net/l2tp/l2tp_core.c:1582
 pppol2tp_release+0x185/0x2d0 net/l2tp/l2tp_ppp.c:438
 __sock_release net/socket.c:652 [inline]
 sock_close+0xf1/0x290 net/socket.c:1389
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2

The buggy address belongs to the object at ffff88810d562000
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 336 bytes inside of
 512-byte region [ffff88810d562000, ffff88810d562200)

The buggy address belongs to the physical page:
page:ffffea0004355800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10d560
head:ffffea0004355800 order:2 compound_mapcount:0 compound_pincount:0
flags: 0x4000000000010200(slab|head|zone=1)
raw: 4000000000010200 0000000000000000 dead000000000122 ffff888100042f00
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x152a20(GFP_ATOMIC|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_HARDWALL), pid 8, tgid 8 (kworker/u4:0), ts 28026971189, free_ts 27022853655
 set_page_owner include/linux/page_owner.h:33 [inline]
 post_alloc_hook+0x1f5/0x210 mm/page_alloc.c:2672
 prep_new_page+0x1c/0x110 mm/page_alloc.c:2679
 get_page_from_freelist+0x2d12/0x2d80 mm/page_alloc.c:4585
 __alloc_pages+0x1fa/0x610 mm/page_alloc.c:5929
 alloc_slab_page+0x6e/0xf0 include/linux/gfp.h:-1
 allocate_slab mm/slub.c:1967 [inline]
 new_slab+0x98/0x3d0 mm/slub.c:2020
 ___slab_alloc+0x6bd/0xb20 mm/slub.c:3177
 __slab_alloc+0x5e/0xa0 mm/slub.c:3263
 slab_alloc_node mm/slub.c:3348 [inline]
 __kmem_cache_alloc_node+0x203/0x2c0 mm/slub.c:3423
 __do_kmalloc_node mm/slab_common.c:937 [inline]
 __kmalloc+0xa1/0x1e0 mm/slab_common.c:951
 kmalloc include/linux/slab.h:568 [inline]
 kzalloc include/linux/slab.h:699 [inline]
 neigh_alloc net/core/neighbour.c:494 [inline]
 ___neigh_create+0x6f6/0x1e20 net/core/neighbour.c:648
 __neigh_create+0x31/0x40 net/core/neighbour.c:737
 ip6_finish_output2+0xa56/0x18a0 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x5f9/0xbb0 net/ipv6/ip6_output.c:216
 NF_HOOK_COND include/linux/netfilter.h:294 [inline]
 ip6_output+0x1fa/0x410 net/ipv6/ip6_output.c:237
 dst_output include/net/dst.h:453 [inline]
 ip6_local_out+0x20f/0x3e0 net/ipv6/output_core.c:161
page last free stack trace:
 reset_page_owner include/linux/page_owner.h:26 [inline]
 free_pages_prepare mm/page_alloc.c:1580 [inline]
 free_pcp_prepare mm/page_alloc.c:1654 [inline]
 free_unref_page_prepare+0x7f8/0x800 mm/page_alloc.c:3620
 free_unref_page+0x95/0x540 mm/page_alloc.c:3718
 free_the_page mm/page_alloc.c:863 [inline]
 __free_pages+0x67/0x100 mm/page_alloc.c:6019
 __vunmap+0x9c0/0xb80 mm/vmalloc.c:2739
 __vfree mm/vmalloc.c:2788 [inline]
 vfree+0x61/0x90 mm/vmalloc.c:2819
 kcov_put kernel/kcov.c:437 [inline]
 kcov_close+0x2b/0x50 kernel/kcov.c:533
 __fput+0x1fc/0x8f0 fs/file_table.c:320
 ____fput+0x15/0x20 fs/file_table.c:348
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0xa35/0x2660 kernel/exit.c:886
 do_group_exit+0x225/0x2e0 kernel/exit.c:1029
 get_signal+0x13b5/0x1520 kernel/signal.c:2891
 arch_do_signal_or_restart+0xd1/0x1140 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x7a/0xb0 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303

Memory state around the buggy address:
 ffff88810d562000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810d562080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88810d562100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff88810d562180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88810d562200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================