Extracting prog: 3m41.394480177s Minimizing prog: 26m34.053586604s Simplifying prog options: 0s Extracting C: 30.640394091s Simplifying C: 22m25.923944481s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 1m40s testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data single: successfully extracted reproducer found reproducer with 5 syscalls minimizing guilty program testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: socket$inet_tcp(0x2, 0x1, 0x0) r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r0, 0x0, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={0xffffffffffffffff, r1, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r0, r1, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, 0x0, 0x0) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, 0x0, &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, 0x0, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) bpf$BPF_LINK_CREATE_XDP(0x1c, 0x0, 0x0) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program did not crash testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0x0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data simplifying C reproducer testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program did not crash testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program did not crash testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet program crashed: BUG: Bad page state in skb_pp_cow_data testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x20}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000001580)={r1, r2, 0x25, 0x2, @val=@netkit}, 0x1c) syz_emit_ethernet(0xfdef, &(0x7f0000000180)={@local, @empty, @void, {@ipv4={0x800, @gre={{0x5, 0x4, 0x2, 0x6, 0x58, 0x67, 0x0, 0x7, 0x2f, 0x0, @empty, @initdev={0xac, 0x1e, 0x1, 0x0}}, {{0x0, 0x0, 0x1, 0x1, 0x0, 0x1}, {0x1, 0x0, 0x0, 0x1}, {0x1}, {0x8, 0x88be, 0x1, {{0x8, 0x1, 0x52, 0x0, 0x0, 0x1, 0x4, 0x1}, 0x1, {0x9}}}, {0x8, 0x22eb, 0x0, {{0x6, 0x2, 0x3, 0x2, 0x1, 0x0, 0x0, 0x5}, 0x2, {0x7, 0x7, 0x0, 0x1f, 0x0, 0x0, 0x2, 0x1}}}, {0x8, 0x6558, 0x2}}}}}}, 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true reproducing took 57m11.970966947s repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:28a5d page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888028a5d000 pfn:0x28a5d flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888028a5d000 3fffffffffffffff 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687448058, free_ts 90658697752 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmems net/core/page_pool.c:667 [inline] page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1076 page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xd11/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:22fef page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x22fef flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687430090, free_ts 90658719596 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7f885 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807f885bb0 pfn:0x7f885 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807f885bb0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687413051, free_ts 90658731424 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33d4a page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033d4a330 pfn:0x33d4a flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888033d4a330 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687395870, free_ts 90658753356 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7701e page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807701e000 pfn:0x7701e flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807701e000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687379295, free_ts 90658773565 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33fb2 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033fb23c0 pfn:0x33fb2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888033fb23c0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687362515, free_ts 90658794261 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33ca7 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x33ca7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687345540, free_ts 90658816033 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:767b7 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880767b7000 pfn:0x767b7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff8880767b7000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687327503, free_ts 90658827671 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7d7e2 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807d7e2640 pfn:0x7d7e2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807d7e2640 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687304751, free_ts 90658848911 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7d56d page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7d56d flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687288536, free_ts 90658870107 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7bad5 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807bad5a00 pfn:0x7bad5 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807bad5a00 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687271636, free_ts 90658881764 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:203c8 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880203c8000 pfn:0x203c8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff8880203c8000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687254725, free_ts 90658893323 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 final repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:28a5d page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888028a5d000 pfn:0x28a5d flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888028a5d000 3fffffffffffffff 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687448058, free_ts 90658697752 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmems net/core/page_pool.c:667 [inline] page_pool_alloc_frag_netmem+0x421/0x9b0 net/core/page_pool.c:1076 page_pool_alloc_netmem include/net/page_pool/helpers.h:131 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xd11/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:22fef page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x22fef flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687430090, free_ts 90658719596 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7f885 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807f885bb0 pfn:0x7f885 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807f885bb0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687413051, free_ts 90658731424 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33d4a page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033d4a330 pfn:0x33d4a flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888033d4a330 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687395870, free_ts 90658753356 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7701e page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807701e000 pfn:0x7701e flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807701e000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687379295, free_ts 90658773565 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33fb2 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888033fb23c0 pfn:0x33fb2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888033fb23c0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687362515, free_ts 90658794261 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:33ca7 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x33ca7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687345540, free_ts 90658816033 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:767b7 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880767b7000 pfn:0x767b7 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff8880767b7000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687327503, free_ts 90658827671 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7d7e2 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807d7e2640 pfn:0x7d7e2 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807d7e2640 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687304751, free_ts 90658848911 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7d56d page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7d56d flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687288536, free_ts 90658870107 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:7bad5 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807bad5a00 pfn:0x7bad5 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff88807bad5a00 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687271636, free_ts 90658881764 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 __tlb_remove_table_free mm/mmu_gather.c:228 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:291 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0 BUG: Bad page state in process syz.0.17 pfn:203c8 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880203c8000 pfn:0x203c8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff88801afb0000 0000000000000000 raw: ffff8880203c8000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6003, tgid 6003 (syz.0.17), ts 90687254725, free_ts 90658893323 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1889 prep_new_page mm/page_alloc.c:1897 [inline] get_page_from_freelist+0x24dc/0x2580 mm/page_alloc.c:3962 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5250 __alloc_pages_noprof mm/page_alloc.c:5284 [inline] alloc_pages_bulk_noprof+0x558/0x700 mm/page_alloc.c:5204 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:616 page_pool_alloc_netmem include/net/page_pool/helpers.h:128 [inline] page_pool_alloc include/net/page_pool/helpers.h:167 [inline] page_pool_dev_alloc include/net/page_pool/helpers.h:188 [inline] skb_pp_cow_data+0xcea/0x1bb0 net/core/skbuff.c:983 netif_skb_check_for_xdp net/core/dev.c:5562 [inline] netif_receive_generic_xdp net/core/dev.c:5603 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 15 tgid 15 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1433 [inline] __free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x870 kernel/softirq.c:622 run_ksoftirqd+0x36/0x60 kernel/softirq.c:1063 smpboot_thread_fn+0x541/0xa50 kernel/smpboot.c:160 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 0 UID: 0 PID: 6003 Comm: syz.0.17 Tainted: G B syzkaller #0 PREEMPT(full) Tainted: [B]=BAD_PAGE Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:676 free_page_is_bad mm/page_alloc.c:1120 [inline] __free_pages_prepare mm/page_alloc.c:1424 [inline] __free_frozen_pages+0xd62/0xdb0 mm/page_alloc.c:2978 bpf_xdp_shrink_data net/core/filter.c:4215 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4239 ____bpf_xdp_adjust_tail net/core/filter.c:4261 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4254 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:723 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5493 netif_receive_generic_xdp net/core/dev.c:5609 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5671 __netif_receive_skb_core+0x10e5/0x31a0 net/core/dev.c:6024 __netif_receive_skb_one_core net/core/dev.c:6212 [inline] __netif_receive_skb net/core/dev.c:6327 [inline] netif_receive_skb_internal net/core/dev.c:6413 [inline] netif_receive_skb+0x1fe/0xc50 net/core/dev.c:6472 tun_rx_batched+0x1de/0x790 drivers/net/tun.c:1485 tun_get_user+0x2aeb/0x3ed0 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:595 [inline] vfs_write+0x61d/0xb90 fs/read_write.c:688 ksys_write+0x150/0x270 fs/read_write.c:740 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fdc4815d04e Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08 RSP: 002b:00007ffdc62272f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555557107500 RCX: 00007fdc4815d04e RDX: 000000000000fdef RSI: 0000200000000180 RDI: 00000000000000c8 RBP: 00007fdc48232c91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc48415fac R14: 00007fdc48415fa0 R15: 00007fdc48415fa0