Extracting prog: 26.292503295s Minimizing prog: 20m15.337039325s Simplifying prog options: 0s Extracting C: 46.170714565s Simplifying C: 2m59.671545724s extracting reproducer from 70 programs testing a last program of every proc single: executing 20 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}}): socket$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL-sendmsg$nl_route-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-setsockopt$netlink_NETLINK_NO_ENOBUFS detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) r1 = socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r3 = socket$pppl2tp(0x18, 0x1, 0x1) r4 = socket$inet6_udp(0xa, 0x2, 0x0) r5 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r5, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r3, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r6 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r7 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r8 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r7, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r8}, 0xc) connect$pppl2tp(r6, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r6, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r2, 0x10000) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r3, 0x81f8943c, &(0x7f0000000980)={0x0, ""/256, 0x0, 0x0, 0x0, 0x0, ""/16, ""/16, ""/16, 0x0, 0x0, 0x0, 0x0}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r3, 0xc0c89425, &(0x7f0000000b80)={"81fe43a57e5f7e32ef291aa960880bd9", 0x0, r9, {0x7, 0x72bd}, {0x1, 0x9}, 0x1df3cc98, [0x8, 0x80000000, 0x6, 0x5, 0x3, 0xffffffffffffffff, 0x1b, 0x4, 0x7, 0x4, 0x4, 0x4, 0x4, 0x3, 0x4, 0x3f]}) sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000040)=@newlink={0x60, 0x10, 0xffffffffffffffff, 0x70bd28, 0x25dfdbf8, {0x0, 0x0, 0x0, 0x0, 0x37c13, 0x51a23}, [@IFLA_LINKINFO={0x40, 0x12, 0x0, 0x1, @ip6gretap={{0xe}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x14, 0x7, @loopback={0x0, 0xfffffffffffffffe}}, @IFLA_GRE_LOCAL={0x14, 0x6, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}}]}}}]}, 0x60}, 0x1, 0x0, 0x0, 0x1}, 0x20040000) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f00000006c0)={0x18, 0x4, &(0x7f0000000780)=ANY=[@ANYBLOB="d40100002000000018000000000000000000000000000000950000000000000038720a013653e84c584fdd38a1990000df9e190a587bed507002e83640d72226cbc0c89b926a"], &(0x7f0000000800)='GPL\x00', 0x5, 0xdd, &(0x7f0000000840)=""/156}, 0x80) setsockopt$netlink_NETLINK_NO_ENOBUFS(r1, 0x10e, 0x5, &(0x7f00000000c0)=0x9, 0x4) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session single: successfully extracted reproducer found reproducer with 27 syscalls minimizing guilty program 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL-sendmsg$nl_route-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) r1 = socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r3 = socket$pppl2tp(0x18, 0x1, 0x1) r4 = socket$inet6_udp(0xa, 0x2, 0x0) r5 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r5, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r3, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r6 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r7 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r8 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r7, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r8}, 0xc) connect$pppl2tp(r6, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r6, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r2, 0x10000) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r3, 0x81f8943c, &(0x7f0000000980)={0x0, ""/256, 0x0, 0x0, 0x0, 0x0, ""/16, ""/16, ""/16, 0x0, 0x0, 0x0, 0x0}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r3, 0xc0c89425, &(0x7f0000000b80)={"81fe43a57e5f7e32ef291aa960880bd9", 0x0, r9, {0x7, 0x72bd}, {0x1, 0x9}, 0x1df3cc98, [0x8, 0x80000000, 0x6, 0x5, 0x3, 0xffffffffffffffff, 0x1b, 0x4, 0x7, 0x4, 0x4, 0x4, 0x4, 0x3, 0x4, 0x3f]}) sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000040)=@newlink={0x60, 0x10, 0xffffffffffffffff, 0x70bd28, 0x25dfdbf8, {0x0, 0x0, 0x0, 0x0, 0x37c13, 0x51a23}, [@IFLA_LINKINFO={0x40, 0x12, 0x0, 0x1, @ip6gretap={{0xe}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x14, 0x7, @loopback={0x0, 0xfffffffffffffffe}}, @IFLA_GRE_LOCAL={0x14, 0x6, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}}]}}}]}, 0x60}, 0x1, 0x0, 0x0, 0x1}, 0x20040000) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f00000006c0)={0x18, 0x4, &(0x7f0000000780)=ANY=[@ANYBLOB="d40100002000000018000000000000000000000000000000950000000000000038720a013653e84c584fdd38a1990000df9e190a587bed507002e83640d72226cbc0c89b926a"], &(0x7f0000000800)='GPL\x00', 0x5, 0xdd, &(0x7f0000000840)=""/156}, 0x80) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL-sendmsg$nl_route detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) r1 = socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r3 = socket$pppl2tp(0x18, 0x1, 0x1) r4 = socket$inet6_udp(0xa, 0x2, 0x0) r5 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r5, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r3, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r4, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r6 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r7 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r8 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r7, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r8}, 0xc) connect$pppl2tp(r6, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r6, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r2, 0x10000) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r3, 0x81f8943c, &(0x7f0000000980)={0x0, ""/256, 0x0, 0x0, 0x0, 0x0, ""/16, ""/16, ""/16, 0x0, 0x0, 0x0, 0x0}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r3, 0xc0c89425, &(0x7f0000000b80)={"81fe43a57e5f7e32ef291aa960880bd9", 0x0, r9, {0x7, 0x72bd}, {0x1, 0x9}, 0x1df3cc98, [0x8, 0x80000000, 0x6, 0x5, 0x3, 0xffffffffffffffff, 0x1b, 0x4, 0x7, 0x4, 0x4, 0x4, 0x4, 0x3, 0x4, 0x3f]}) sendmsg$nl_route(r1, &(0x7f0000000000)={0x0, 0x0, &(0x7f0000000180)={&(0x7f0000000040)=@newlink={0x60, 0x10, 0xffffffffffffffff, 0x70bd28, 0x25dfdbf8, {0x0, 0x0, 0x0, 0x0, 0x37c13, 0x51a23}, [@IFLA_LINKINFO={0x40, 0x12, 0x0, 0x1, @ip6gretap={{0xe}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x14, 0x7, @loopback={0x0, 0xfffffffffffffffe}}, @IFLA_GRE_LOCAL={0x14, 0x6, @ipv4={'\x00', '\xff\xff', @initdev={0xac, 0x1e, 0x1, 0x0}}}]}}}]}, 0x60}, 0x1, 0x0, 0x0, 0x1}, 0x20040000) program crashed: KASAN: use-after-free Read in l2tp_tunnel_del_work 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES-ioctl$BTRFS_IOC_GET_SUBVOL_INFO-ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r2 = socket$pppl2tp(0x18, 0x1, 0x1) r3 = socket$inet6_udp(0xa, 0x2, 0x0) r4 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r4, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r2, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r5 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r6 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r7 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r6, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r7}, 0xc) connect$pppl2tp(r5, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r5, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r1, 0x10000) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r2, 0x81f8943c, &(0x7f0000000980)={0x0, ""/256, 0x0, 0x0, 0x0, 0x0, ""/16, ""/16, ""/16, 0x0, 0x0, 0x0, 0x0}) ioctl$BTRFS_IOC_SET_RECEIVED_SUBVOL(r2, 0xc0c89425, &(0x7f0000000b80)={"81fe43a57e5f7e32ef291aa960880bd9", 0x0, r8, {0x7, 0x72bd}, {0x1, 0x9}, 0x1df3cc98, [0x8, 0x80000000, 0x6, 0x5, 0x3, 0xffffffffffffffff, 0x1b, 0x4, 0x7, 0x4, 0x4, 0x4, 0x4, 0x3, 0x4, 0x3f]}) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r2 = socket$pppl2tp(0x18, 0x1, 0x1) r3 = socket$inet6_udp(0xa, 0x2, 0x0) r4 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r4, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r2, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r5 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r6 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r7 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r6, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r7}, 0xc) connect$pppl2tp(r5, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r5, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r1, 0x10000) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r2, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-munmap$IORING_OFF_SQES detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)=0x0) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r2 = socket$pppl2tp(0x18, 0x1, 0x1) r3 = socket$inet6_udp(0xa, 0x2, 0x0) r4 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r4, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r2, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r3, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r5 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r6 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r7 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r6, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r7}, 0xc) connect$pppl2tp(r5, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r5, 0x111, 0x3, 0x1, 0x4) munmap$IORING_OFF_SQES(r1, 0x10000) 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r4 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r5 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r6 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r5, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r6}, 0xc) connect$pppl2tp(r4, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) setsockopt$pppl2tp_PPPOL2TP_SO_SENDSEQ(r4, 0x111, 0x3, 0x1, 0x4) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) r4 = socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r5 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r6 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r5, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r6}, 0xc) connect$pppl2tp(r4, &(0x7f0000000680)=@pppol2tpv3={0x18, 0x1, {0x0, 0xffffffffffffffff, {0x2, 0x0, @initdev={0xac, 0x1e, 0x0, 0x0}}, 0x2, 0x1}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-bpf$PROG_BIND_MAP-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r4 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) r5 = bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r4, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) bpf$PROG_BIND_MAP(0xa, &(0x7f0000000ec0)={r5}, 0xc) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-bpf$PROG_LOAD-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) r4 = bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) bpf$PROG_LOAD(0x5, &(0x7f0000000d00)={0x11, 0x14, &(0x7f0000000dc0)=ANY=[@ANYBLOB="180000000000000000000000000000001801000020646c2100000000002020207b1af8ff00000000bfa100000000000007010000f8ffffffb702000008000000b703000000000000850000000800000018110000", @ANYRES32=r4, @ANYBLOB="0000000000000000b7080000000000007b8af8ff00000000bfa200000000000007020000f8ffffffb703000008000000b704000000000000850000000100000095"], &(0x7f0000000e80)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x0, '\x00', 0x0, @fallback, 0xffffffffffffffff, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, 0x94) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-bpf$MAP_CREATE-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) bpf$MAP_CREATE(0x0, &(0x7f0000000cc0)=ANY=[], 0x48) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-bpf$MAP_CREATE-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) bpf$MAP_CREATE(0x0, &(0x7f0000000c80)=ANY=[@ANYBLOB="06000000040000006c0f00000a"], 0x48) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-bpf$ENABLE_STATS-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) bpf$ENABLE_STATS(0x20, 0x0, 0x0) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-socket$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) socket$pppl2tp(0x18, 0x1, 0x1) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) r3 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r3, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-bpf$BPF_GET_PROG_INFO-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) socket$inet6_udp(0xa, 0x2, 0x0) r2 = bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) bpf$BPF_GET_PROG_INFO(0xf, &(0x7f00000004c0)={r2, 0xe0, &(0x7f0000000500)={0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, ""/16, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2, 0x0, &(0x7f0000000600)=[0x0, 0x0], 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x8, 0xfe, 0x0}}, 0x10) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-bpf$PROG_LOAD-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) bpf$PROG_LOAD(0x5, &(0x7f0000000280)={0xe, 0x6, &(0x7f0000000340)=@framed={{0x5, 0x0, 0x0, 0x0, 0x0, 0x71, 0x11, 0x42}, [@func={0x85, 0x0, 0x1, 0x0, 0x2}, @call={0x85, 0x0, 0x0, 0x5}, @exit], {0x95, 0x0, 0x5a5}}, &(0x7f0000000380)='GPL\x00', 0x5, 0x29e, &(0x7f00000003c0)=""/195, 0x0, 0x0, '\x00', 0x0, @sk_skb, 0xffffffffffffffff, 0x6}, 0x70) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$pppl2tp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, 0xffffffffffffffff, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-mmap-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) mmap(0x0, 0x400000, 0x3, 0x32, 0xffffffffffffffff, 0x0) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(0xffffffffffffffff, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(0xffffffffffffffff, 0x81f8943c, &(0x7f0000000980)) 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-syz_io_uring_setup-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) syz_io_uring_setup(0x10b, &(0x7f0000000100)={0x0, 0xda88, 0x9, 0x1, 0x3}, &(0x7f00000001c0), &(0x7f0000000200), &(0x7f0000000240)) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-syz_clone-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) syz_clone(0x11, 0x0, 0x0, 0x0, 0x0, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-syz_clone-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) syz_clone(0x48411, 0x0, 0x0, 0x0, 0x0, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$nl_route-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) socket$nl_route(0x10, 0x3, 0x0) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session 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$inet-setsockopt$inet_opts-getsockopt$inet_opts-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) getsockopt$inet_opts(r0, 0x0, 0x4, 0xfffffffffffffffe, &(0x7f0000000940)) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$inet-setsockopt$inet_opts-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$inet(0x2, 0x2, 0x0) setsockopt$inet_opts(r0, 0x0, 0x4, &(0x7f0000000900)="8907040400", 0x5) r1 = socket$pppl2tp(0x18, 0x1, 0x1) r2 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r1, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r2, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r1, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue 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$inet-socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: socket$inet(0x2, 0x2, 0x0) r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Write in pppol2tp_release 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$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, &(0x7f0000000980)) program crashed: KASAN: use-after-free Read in rcu_cblist_dequeue 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$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, 0x0, 0x0) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, &(0x7f0000000980)) 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$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, 0x0) program crashed: KASAN: use-after-free Write in pppol2tp_release extracting C reproducer testing compiled C 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$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program crashed: KASAN: use-after-free Write in pppol2tp_release simplifying C reproducer testing compiled C program (duration=30s, {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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program crashed: KASAN: use-after-free Write in pppol2tp_release testing compiled C program (duration=30s, {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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program crashed: KASAN: use-after-free Write in pppol2tp_release testing compiled C program (duration=30s, {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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session testing compiled C program (duration=30s, {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:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program did not crash testing compiled C program (duration=30s, {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:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$pppl2tp-socket$inet6_udp-connect$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program did not crash testing compiled C program (duration=30s, {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:false 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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session testing program (duration=30s, {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:false 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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, 0x0) program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue validation run: crashed=true testing program (duration=30s, {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:false 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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, 0x0) program crashed: KASAN: use-after-free Write in rcu_segcblist_enqueue validation run: crashed=true testing program (duration=30s, {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:false 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$pppl2tp-ioctl$BTRFS_IOC_GET_SUBVOL_INFO detailed listing: executing program 0: r0 = socket$pppl2tp(0x18, 0x1, 0x1) r1 = socket$inet6_udp(0xa, 0x2, 0x0) connect$pppl2tp(r0, &(0x7f0000000640)=@pppol2tpv3={0x18, 0x1, {0x3, r1, {0x2, 0x0, @dev}, 0x2}}, 0x2e) ioctl$BTRFS_IOC_GET_SUBVOL_INFO(r0, 0x81f8943c, 0x0) program crashed: KASAN: use-after-free Read in pppol2tp_sock_to_session validation run: crashed=true reproducing took 26m25.621752558s repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 net/l2tp/l2tp_ppp.c:156 Read of size 4 at addr ffff88812b23b400 by task syz.2.17/370 CPU: 0 PID: 370 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x10f/0x150 mm/kasan/report.c:444 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308 pppol2tp_sock_to_session+0x1a0/0x1b0 net/l2tp/l2tp_ppp.c:156 pppol2tp_release+0x150/0x2b0 net/l2tp/l2tp_ppp.c:435 __sock_release net/socket.c:649 [inline] sock_close+0xb8/0x200 net/socket.c:1336 __fput+0x22b/0x900 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:184 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:217 __syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:310 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1e728d71d9 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:00007ffcd803e4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffcd803e5e0 RCX: 00007f1e728d71d9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000006a82 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e72b5efac R14: 00007f1e72b5efa8 R15: 00007f1e72b5efa0 Allocated by task 370: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc mm/kasan/common.c:512 [inline] __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc+0x13d/0x2c0 mm/slub.c:4436 kmalloc include/linux/slab.h:624 [inline] kzalloc include/linux/slab.h:750 [inline] l2tp_session_create+0x39/0xb60 net/l2tp/l2tp_core.c:1616 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:772 __sys_connect_file net/socket.c:1923 [inline] __sys_connect+0x3cb/0x450 net/socket.c:1940 __do_sys_connect net/socket.c:1950 [inline] __se_sys_connect net/socket.c:1947 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:1947 x64_sys_call+0x7c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 10: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4a/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1728 [inline] slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754 slab_free mm/slub.c:3526 [inline] kfree+0xc4/0x270 mm/slub.c:4588 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline] l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193 l2tp_session_delete+0x3a9/0x4a0 net/l2tp/l2tp_core.c:1589 l2tp_tunnel_closeall net/l2tp/l2tp_core.c:1235 [inline] l2tp_tunnel_del_work+0x180/0x3d0 net/l2tp/l2tp_core.c:1273 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475 kthread+0x3f5/0x4f0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff88812b23b400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes inside of 512-byte region [ffff88812b23b400, ffff88812b23b600) The buggy address belongs to the page: page:ffffea0004ac8e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12b238 head:ffffea0004ac8e00 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 60, ts 27312745475, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1937 [inline] new_slab+0xa0/0x4d0 mm/slub.c:2000 ___slab_alloc+0x3ac/0x840 mm/slub.c:3033 __slab_alloc+0x49/0x90 mm/slub.c:3120 slab_alloc_node mm/slub.c:3211 [inline] slab_alloc mm/slub.c:3255 [inline] __kmalloc+0x16a/0x2c0 mm/slub.c:4432 kmalloc include/linux/slab.h:624 [inline] kzalloc include/linux/slab.h:750 [inline] neigh_alloc net/core/neighbour.c:438 [inline] ___neigh_create+0x6fb/0x1c50 net/core/neighbour.c:591 __neigh_create+0x31/0x40 net/core/neighbour.c:679 ip6_finish_output2+0xae3/0x1790 net/ipv6/ip6_output.c:129 __ip6_finish_output+0x623/0x7e0 net/ipv6/ip6_output.c:203 ip6_finish_output+0x31/0x220 net/ipv6/ip6_output.c:213 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1fa/0x410 net/ipv6/ip6_output.c:236 dst_output include/net/dst.h:453 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0x7f8/0xd00 net/ipv6/ndisc.c:513 ndisc_send_ns+0x879/0xb10 net/ipv6/ndisc.c:655 page_owner free stack trace missing Memory state around the buggy address: ffff88812b23b300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812b23b380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88812b23b400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812b23b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812b23b500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ------------[ cut here ]------------ WARNING: CPU: 0 PID: 370 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 net/l2tp/l2tp_ppp.c:156 Modules linked in: CPU: 0 PID: 370 Comm: syz.2.17 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 net/l2tp/l2tp_ppp.c:156 Code: 5d c3 e8 8c ab 0a fd be 02 00 00 00 eb 0a e8 80 ab 0a fd be 01 00 00 00 4c 89 f7 e8 73 2e f1 fd e9 0f ff ff ff e8 69 ab 0a fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 58 ab 0a fd 4c 89 f7 be 03 RSP: 0018:ffffc90000b47d10 EFLAGS: 00010293 RAX: ffffffff845f2ff7 RBX: ffff8881100f3000 RCX: ffff88812907e400 RDX: 0000000000000000 RSI: 000000000aae3d40 RDI: 000000000c04eb7d RBP: ffffc90000b47d30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff0e1904c R12: dffffc0000000000 R13: dffffc0000000000 R14: 000000000aae3d40 R15: ffff88812b23b400 FS: 00005555815a6500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000640 CR3: 000000010d547000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pppol2tp_release+0x150/0x2b0 net/l2tp/l2tp_ppp.c:435 __sock_release net/socket.c:649 [inline] sock_close+0xb8/0x200 net/socket.c:1336 __fput+0x22b/0x900 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:184 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:217 __syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:310 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1e728d71d9 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:00007ffcd803e4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffcd803e5e0 RCX: 00007f1e728d71d9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000006a82 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e72b5efac R14: 00007f1e72b5efa8 R15: 00007f1e72b5efa0 ---[ end trace 558b1e5c802d7ef1 ]--- final repro crashed as (corrupted=false): ================================================================== BUG: KASAN: use-after-free in pppol2tp_sock_to_session+0x1a0/0x1b0 net/l2tp/l2tp_ppp.c:156 Read of size 4 at addr ffff88812b23b400 by task syz.2.17/370 CPU: 0 PID: 370 Comm: syz.2.17 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 Call Trace: __dump_stack+0x21/0x30 lib/dump_stack.c:88 dump_stack_lvl+0x110/0x170 lib/dump_stack.c:106 print_address_description+0x7f/0x2c0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:427 [inline] kasan_report+0x10f/0x150 mm/kasan/report.c:444 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report_generic.c:308 pppol2tp_sock_to_session+0x1a0/0x1b0 net/l2tp/l2tp_ppp.c:156 pppol2tp_release+0x150/0x2b0 net/l2tp/l2tp_ppp.c:435 __sock_release net/socket.c:649 [inline] sock_close+0xb8/0x200 net/socket.c:1336 __fput+0x22b/0x900 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:184 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:217 __syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:310 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1e728d71d9 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:00007ffcd803e4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffcd803e5e0 RCX: 00007f1e728d71d9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000006a82 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e72b5efac R14: 00007f1e72b5efa8 R15: 00007f1e72b5efa0 Allocated by task 370: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:45 [inline] set_alloc_info mm/kasan/common.c:433 [inline] ____kasan_kmalloc mm/kasan/common.c:512 [inline] __kasan_kmalloc+0xd4/0x100 mm/kasan/common.c:521 kasan_kmalloc include/linux/kasan.h:227 [inline] __kmalloc+0x13d/0x2c0 mm/slub.c:4436 kmalloc include/linux/slab.h:624 [inline] kzalloc include/linux/slab.h:750 [inline] l2tp_session_create+0x39/0xb60 net/l2tp/l2tp_core.c:1616 pppol2tp_connect+0xbf5/0x1640 net/l2tp/l2tp_ppp.c:772 __sys_connect_file net/socket.c:1923 [inline] __sys_connect+0x3cb/0x450 net/socket.c:1940 __do_sys_connect net/socket.c:1950 [inline] __se_sys_connect net/socket.c:1947 [inline] __x64_sys_connect+0x7a/0x90 net/socket.c:1947 x64_sys_call+0x7c/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:43 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 Freed by task 10: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4a/0x70 mm/kasan/common.c:45 kasan_set_free_info+0x23/0x40 mm/kasan/generic.c:370 ____kasan_slab_free+0x125/0x160 mm/kasan/common.c:365 __kasan_slab_free+0x11/0x20 mm/kasan/common.c:373 kasan_slab_free include/linux/kasan.h:193 [inline] slab_free_hook mm/slub.c:1728 [inline] slab_free_freelist_hook+0xc2/0x190 mm/slub.c:1754 slab_free mm/slub.c:3526 [inline] kfree+0xc4/0x270 mm/slub.c:4588 l2tp_session_free net/l2tp/l2tp_core.c:168 [inline] l2tp_session_put+0xaf/0x1a0 net/l2tp/l2tp_core.c:193 l2tp_session_delete+0x3a9/0x4a0 net/l2tp/l2tp_core.c:1589 l2tp_tunnel_closeall net/l2tp/l2tp_core.c:1235 [inline] l2tp_tunnel_del_work+0x180/0x3d0 net/l2tp/l2tp_core.c:1273 process_one_work+0x6c8/0xbb0 kernel/workqueue.c:2328 worker_thread+0xaa0/0x1250 kernel/workqueue.c:2475 kthread+0x3f5/0x4f0 kernel/kthread.c:337 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287 The buggy address belongs to the object at ffff88812b23b400 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 0 bytes inside of 512-byte region [ffff88812b23b400, ffff88812b23b600) The buggy address belongs to the page: page:ffffea0004ac8e00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12b238 head:ffffea0004ac8e00 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 60, ts 27312745475, free_ts 0 set_page_owner include/linux/page_owner.h:33 [inline] post_alloc_hook+0x192/0x1b0 mm/page_alloc.c:2607 prep_new_page+0x1c/0x110 mm/page_alloc.c:2613 get_page_from_freelist+0x2c3a/0x2cd0 mm/page_alloc.c:4487 __alloc_pages+0x1a2/0x460 mm/page_alloc.c:5824 alloc_slab_page mm/slub.c:-1 [inline] allocate_slab mm/slub.c:1937 [inline] new_slab+0xa0/0x4d0 mm/slub.c:2000 ___slab_alloc+0x3ac/0x840 mm/slub.c:3033 __slab_alloc+0x49/0x90 mm/slub.c:3120 slab_alloc_node mm/slub.c:3211 [inline] slab_alloc mm/slub.c:3255 [inline] __kmalloc+0x16a/0x2c0 mm/slub.c:4432 kmalloc include/linux/slab.h:624 [inline] kzalloc include/linux/slab.h:750 [inline] neigh_alloc net/core/neighbour.c:438 [inline] ___neigh_create+0x6fb/0x1c50 net/core/neighbour.c:591 __neigh_create+0x31/0x40 net/core/neighbour.c:679 ip6_finish_output2+0xae3/0x1790 net/ipv6/ip6_output.c:129 __ip6_finish_output+0x623/0x7e0 net/ipv6/ip6_output.c:203 ip6_finish_output+0x31/0x220 net/ipv6/ip6_output.c:213 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x1fa/0x410 net/ipv6/ip6_output.c:236 dst_output include/net/dst.h:453 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0x7f8/0xd00 net/ipv6/ndisc.c:513 ndisc_send_ns+0x879/0xb10 net/ipv6/ndisc.c:655 page_owner free stack trace missing Memory state around the buggy address: ffff88812b23b300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88812b23b380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff88812b23b400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff88812b23b480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff88812b23b500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ------------[ cut here ]------------ WARNING: CPU: 0 PID: 370 at net/l2tp/l2tp_ppp.c:156 pppol2tp_sock_to_session+0x167/0x1b0 net/l2tp/l2tp_ppp.c:156 Modules linked in: CPU: 0 PID: 370 Comm: syz.2.17 Tainted: G B syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:pppol2tp_sock_to_session+0x167/0x1b0 net/l2tp/l2tp_ppp.c:156 Code: 5d c3 e8 8c ab 0a fd be 02 00 00 00 eb 0a e8 80 ab 0a fd be 01 00 00 00 4c 89 f7 e8 73 2e f1 fd e9 0f ff ff ff e8 69 ab 0a fd <0f> 0b 48 89 df e8 ef 00 00 00 eb bd e8 58 ab 0a fd 4c 89 f7 be 03 RSP: 0018:ffffc90000b47d10 EFLAGS: 00010293 RAX: ffffffff845f2ff7 RBX: ffff8881100f3000 RCX: ffff88812907e400 RDX: 0000000000000000 RSI: 000000000aae3d40 RDI: 000000000c04eb7d RBP: ffffc90000b47d30 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff0e1904c R12: dffffc0000000000 R13: dffffc0000000000 R14: 000000000aae3d40 R15: ffff88812b23b400 FS: 00005555815a6500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000640 CR3: 000000010d547000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pppol2tp_release+0x150/0x2b0 net/l2tp/l2tp_ppp.c:435 __sock_release net/socket.c:649 [inline] sock_close+0xb8/0x200 net/socket.c:1336 __fput+0x22b/0x900 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:184 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:217 __syscall_exit_to_user_mode_work kernel/entry/common.c:299 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:310 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f1e728d71d9 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:00007ffcd803e4f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007ffcd803e5e0 RCX: 00007f1e728d71d9 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 0000000000006a82 R08: 0000000000000001 R09: 0000000000000000 R10: 0000001b32d20000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f1e72b5efac R14: 00007f1e72b5efa8 R15: 00007f1e72b5efa0 ---[ end trace 558b1e5c802d7ef1 ]---