Extracting prog: 2m37.307598815s Minimizing prog: 15m6.501332832s Simplifying prog options: 0s Extracting C: 31.100651519s Simplifying C: 15m58.602563919s 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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 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=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) program did not crash testing program (duration=47.665286328s, {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$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r0, 0x0, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f0000000000)={0xffffffffffffffff, r1, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r0, r1, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, 0x0, &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], 0x0, 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, 0x0, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) bpf$BPF_LINK_CREATE_XDP(0x1c, 0x0, 0x0) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program did not crash testing program (duration=47.665286328s, {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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=47.665286328s, {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=47.665286328s, {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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): 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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154: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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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=47.665286328s, {Threaded:false Repeat:false 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=47.665286328s, {Threaded:false Repeat:false 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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false 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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true 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: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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=47.665286328s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$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, &(0x7f00000001c0)={0x6, 0x4, &(0x7f00000002c0)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x41000, 0x64}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000000)={r1, r2, 0x25, 0x4, @void}, 0x10) syz_emit_ethernet(0xfdef, &(0x7f0000000000)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true reproducing took 38m8.895993447s repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:76fd8 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fd8230 pfn:0x76fd8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fd8230 3fffffffffffffff 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015149728, free_ts 102522981959 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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:1096 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+0xcb7/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6042 tgid 6042 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 __slab_free+0x274/0x2c0 mm/slub.c:5608 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4569 [inline] slab_alloc_node mm/slub.c:4898 [inline] kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4905 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0x83/0x570 mm/rmap.c:391 dup_mmap+0x991/0x1d90 mm/mmap.c:1803 dup_mm kernel/fork.c:1534 [inline] copy_mm+0x13b/0x4a0 kernel/fork.c:1586 copy_process+0x1f1c/0x4450 kernel/fork.c:2262 kernel_clone+0x284/0x8f0 kernel/fork.c:2723 __do_sys_clone kernel/fork.c:2864 [inline] __se_sys_clone kernel/fork.c:2848 [inline] __x64_sys_clone+0x1b6/0x230 kernel/fork.c:2848 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Modules linked in: CPU: 0 UID: 0 PID: 6065 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76fd6 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fd6318 pfn:0x76fd6 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fd6318 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015128899, free_ts 102570244849 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:317db page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880317db780 pfn:0x317db flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880317db780 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015109663, free_ts 102570264891 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:34d61 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888034d61c80 pfn:0x34d61 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888034d61c80 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015090451, free_ts 102570314787 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777fd page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777fd8c0 pfn:0x777fd flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777fd8c0 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015071471, free_ts 102570334575 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777f0 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777f0280 pfn:0x777f0 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777f0280 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015051750, free_ts 102570353957 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76fdb page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fdb280 pfn:0x76fdb flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fdb280 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015032126, free_ts 102570393231 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777f6 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777f6000 pfn:0x777f6 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777f6000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015011544, free_ts 102570434837 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:775ae page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880775aeb58 pfn:0x775ae flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880775aeb58 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014992170, free_ts 102570454563 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76c10 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076c10000 pfn:0x76c10 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076c10000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014972281, free_ts 102570474620 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:760e1 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880760e1000 pfn:0x760e1 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880760e1000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014952731, free_ts 103000185037 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6065 tgid 6065 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76119 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076119c80 pfn:0x76119 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076119c80 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014933056, free_ts 103000300922 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6065 tgid 6065 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 final repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:76fd8 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fd8230 pfn:0x76fd8 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fd8230 3fffffffffffffff 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015149728, free_ts 102522981959 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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:1096 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+0xcb7/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6042 tgid 6042 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 __slab_free+0x274/0x2c0 mm/slub.c:5608 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:350 kasan_slab_alloc include/linux/kasan.h:253 [inline] slab_post_alloc_hook mm/slub.c:4569 [inline] slab_alloc_node mm/slub.c:4898 [inline] kmem_cache_alloc_noprof+0x2bc/0x650 mm/slub.c:4905 anon_vma_alloc mm/rmap.c:94 [inline] anon_vma_fork+0x83/0x570 mm/rmap.c:391 dup_mmap+0x991/0x1d90 mm/mmap.c:1803 dup_mm kernel/fork.c:1534 [inline] copy_mm+0x13b/0x4a0 kernel/fork.c:1586 copy_process+0x1f1c/0x4450 kernel/fork.c:2262 kernel_clone+0x284/0x8f0 kernel/fork.c:2723 __do_sys_clone kernel/fork.c:2864 [inline] __se_sys_clone kernel/fork.c:2848 [inline] __x64_sys_clone+0x1b6/0x230 kernel/fork.c:2848 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Modules linked in: CPU: 0 UID: 0 PID: 6065 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76fd6 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fd6318 pfn:0x76fd6 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fd6318 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015128899, free_ts 102570244849 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:317db page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880317db780 pfn:0x317db flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880317db780 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015109663, free_ts 102570264891 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:34d61 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888034d61c80 pfn:0x34d61 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888034d61c80 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015090451, free_ts 102570314787 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777fd page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777fd8c0 pfn:0x777fd flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777fd8c0 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015071471, free_ts 102570334575 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777f0 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777f0280 pfn:0x777f0 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777f0280 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015051750, free_ts 102570353957 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76fdb page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076fdb280 pfn:0x76fdb flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076fdb280 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015032126, free_ts 102570393231 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:777f6 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880777f6000 pfn:0x777f6 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880777f6000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103015011544, free_ts 102570434837 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:775ae page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880775aeb58 pfn:0x775ae flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880775aeb58 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014992170, free_ts 102570454563 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76c10 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076c10000 pfn:0x76c10 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076c10000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014972281, free_ts 102570474620 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6056 tgid 6056 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:760e1 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880760e1000 pfn:0x760e1 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff8880760e1000 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014952731, free_ts 103000185037 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6065 tgid 6065 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0 BUG: Bad page state in process syz.0.17 pfn:76119 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888076119c80 pfn:0x76119 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) page_type: f9(unknown) raw: 00fff00000000000 0000000000000000 ffff888022efe000 0000000000000000 raw: ffff888076119c80 0000000000000001 00000000f9000000 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 6065, tgid 6065 (syz.0.17), ts 103014933056, free_ts 103000300922 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x231/0x280 mm/page_alloc.c:1858 prep_new_page mm/page_alloc.c:1866 [inline] get_page_from_freelist+0x24ba/0x2540 mm/page_alloc.c:3946 __alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5226 __alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5260 alloc_pages_bulk_noprof+0x5ff/0x7c0 mm/page_alloc.c:5180 alloc_pages_bulk_node_noprof include/linux/gfp.h:259 [inline] __page_pool_alloc_netmems_slow+0x151/0x7b0 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+0xc91/0x19b0 net/core/skbuff.c:982 netif_skb_check_for_xdp net/core/dev.c:5557 [inline] netif_receive_generic_xdp net/core/dev.c:5598 [inline] do_xdp_generic+0x76b/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f page last free pid 6065 tgid 6065 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] __free_pages_prepare mm/page_alloc.c:1402 [inline] __free_frozen_pages+0xbc7/0xd30 mm/page_alloc.c:2943 rcu_do_batch kernel/rcu/tree.c:2617 [inline] rcu_core+0x7cd/0x1070 kernel/rcu/tree.c:2869 handle_softirqs+0x22a/0x840 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0xca/0x220 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 Modules linked in: CPU: 0 UID: 0 PID: 6065 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 04/18/2026 Call Trace: dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120 bad_page+0x17f/0x1c0 mm/page_alloc.c:632 bpf_xdp_shrink_data net/core/filter.c:4211 [inline] bpf_xdp_frags_shrink_tail+0x4da/0x7d0 net/core/filter.c:4235 ____bpf_xdp_adjust_tail net/core/filter.c:4257 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4250 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:722 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x603/0x1490 net/core/dev.c:5488 netif_receive_generic_xdp net/core/dev.c:5604 [inline] do_xdp_generic+0xac5/0x12e0 net/core/dev.c:5666 tun_get_user+0x24ca/0x43e0 drivers/net/tun.c:1874 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:2001 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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f52f975d60e 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:00007fff962ec3e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000555576f02500 RCX: 00007f52f975d60e RDX: 000000000000fdef RSI: 0000200000000000 RDI: 00000000000000c8 RBP: 00007f52f9832d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f52f9a15fac R14: 00007f52f9a15fa0 R15: 00007f52f9a15fa0