Extracting prog: 2m21.058868462s Minimizing prog: 17m22.123512131s Simplifying prog options: 0s Extracting C: 1m15.748171224s Simplifying C: 17m24.531009212s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data 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=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: socket$inet_tcp(0x2, 0x1, 0x0) r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r0, 0x0, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {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, &(0x7f0000000300)={0xffffffffffffffff, r1, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r0, r1, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {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, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, 0x0, &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], 0x0, 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, 0x0) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, 0x0, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00'}) bpf$BPF_LINK_CREATE_XDP(0x1c, 0x0, 0x0) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program did not crash testing program (duration=47.238806568s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet_tcp-bpf$BPF_PROG_RAW_TRACEPOINT_LOAD-ioctl$sock_SIOCGIFINDEX-bpf$BPF_LINK_CREATE_XDP-syz_emit_ethernet detailed listing: executing program 0: r0 = socket$inet_tcp(0x2, 0x1, 0x0) r1 = bpf$BPF_PROG_RAW_TRACEPOINT_LOAD(0x5, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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=47.238806568s, {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, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=47.238806568s, {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, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true testing program (duration=47.238806568s, {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, &(0x7f0000000040)={0x6, 0x4, &(0x7f0000000400)=ANY=[@ANYBLOB="180200002343ffff0000000000000000850000004100000095"], &(0x7f00000000c0)='GPL\x00', 0x0, 0x0, 0x0, 0x0, 0x28}, 0x94) ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000180)={'syz_tun\x00', 0x0}) bpf$BPF_LINK_CREATE_XDP(0x1c, &(0x7f0000000300)={r1, r2, 0x25, 0x2, @val=@perf_event={0xff}}, 0x18) syz_emit_ethernet(0x11dc0, &(0x7f00000004c0)=ANY=[], 0x0) program crashed: BUG: Bad page state in skb_pp_cow_data validation run: crashed=true reproducing took 41m36.819081322s repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:79e9b page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888079e9bdc0 pfn:0x79e9b flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888079e9bdc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376699250, free_ts 101955351190 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:7db23 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807db23a00 pfn:0x7db23 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff88807db23a00 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376689248, free_ts 101955374034 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:75ffc page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ffc flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376679287, free_ts 101955396513 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:75ee3 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ee3 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376669462, free_ts 101955408987 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:327c5 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880327c58c0 pfn:0x327c5 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff8880327c58c0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376659464, free_ts 101955431649 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:77c31 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x77c31 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376649558, free_ts 101955458047 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:7f880 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7f880 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376639585, free_ts 101955470686 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:758a4 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880758a4000 pfn:0x758a4 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff8880758a4000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376629515, free_ts 101955483764 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:23716 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888023716cc0 pfn:0x23716 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888023716cc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376618810, free_ts 101957268766 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:71eb1 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb1000 pfn:0x71eb1 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888071eb1000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376608898, free_ts 101957282730 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:71eb0 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb0dc0 pfn:0x71eb0 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888071eb0dc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376599036, free_ts 101957296391 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 final repro crashed as (corrupted=false): BUG: Bad page state in process syz.0.17 pfn:79e9b page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888079e9bdc0 pfn:0x79e9b flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888079e9bdc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376699250, free_ts 101955351190 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:7db23 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88807db23a00 pfn:0x7db23 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff88807db23a00 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376689248, free_ts 101955374034 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:75ffc page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ffc flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376679287, free_ts 101955396513 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:75ee3 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x75ee3 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376669462, free_ts 101955408987 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:327c5 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880327c58c0 pfn:0x327c5 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff8880327c58c0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376659464, free_ts 101955431649 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:77c31 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x77c31 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376649558, free_ts 101955458047 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:7f880 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888000000000 pfn:0x7f880 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888000000000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376639585, free_ts 101955470686 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 __tlb_remove_table_free mm/mmu_gather.c:227 [inline] tlb_remove_table_rcu+0x85/0x100 mm/mmu_gather.c:290 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:758a4 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff8880758a4000 pfn:0x758a4 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff8880758a4000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376629515, free_ts 101955483764 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:23716 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888023716cc0 pfn:0x23716 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888023716cc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376618810, free_ts 101957268766 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:71eb1 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb1000 pfn:0x71eb1 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888071eb1000 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376608898, free_ts 101957282730 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003 BUG: Bad page state in process syz.0.17 pfn:71eb0 page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff888071eb0dc0 pfn:0x71eb0 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 dead000000000040 ffff888020aeb000 0000000000000000 raw: ffff888071eb0dc0 0000000000000001 00000000ffffffff 0000000000000000 page dumped because: page_pool leak page_owner tracks the page as allocated page last allocated via order 0, migratetype Unmovable, gfp_mask 0x2820(GFP_ATOMIC|__GFP_NOWARN), pid 6017, tgid 6017 (syz.0.17), ts 102376599036, free_ts 101957296391 set_page_owner include/linux/page_owner.h:32 [inline] post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850 prep_new_page mm/page_alloc.c:1858 [inline] get_page_from_freelist+0x2365/0x2440 mm/page_alloc.c:3884 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5183 __alloc_pages_noprof mm/page_alloc.c:5217 [inline] alloc_pages_bulk_noprof+0x560/0x710 mm/page_alloc.c:5137 alloc_pages_bulk_node_noprof include/linux/gfp.h:254 [inline] __page_pool_alloc_netmems_slow+0x14c/0x710 net/core/page_pool.c:612 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+0xb47/0x13e0 net/core/skbuff.c:952 netif_skb_check_for_xdp net/core/dev.c:5469 [inline] netif_receive_generic_xdp net/core/dev.c:5510 [inline] do_xdp_generic+0x699/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 page last free pid 23 tgid 23 stack trace: reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1394 [inline] __free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2906 rcu_do_batch kernel/rcu/tree.c:2605 [inline] rcu_core+0xcab/0x1770 kernel/rcu/tree.c:2861 handle_softirqs+0x286/0x870 kernel/softirq.c:622 run_ksoftirqd+0x9b/0x100 kernel/softirq.c:1063 smpboot_thread_fn+0x542/0xa60 kernel/smpboot.c:160 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Modules linked in: CPU: 1 UID: 0 PID: 6017 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 10/02/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 bad_page+0x180/0x1c0 mm/page_alloc.c:649 free_page_is_bad mm/page_alloc.c:1082 [inline] free_pages_prepare mm/page_alloc.c:1386 [inline] __free_frozen_pages+0xce2/0xd30 mm/page_alloc.c:2906 bpf_xdp_shrink_data net/core/filter.c:4190 [inline] bpf_xdp_frags_shrink_tail+0x4f7/0x7f0 net/core/filter.c:4214 ____bpf_xdp_adjust_tail net/core/filter.c:4236 [inline] bpf_xdp_adjust_tail+0x1d6/0x220 net/core/filter.c:4229 bpf_prog_5d7dc57dfd7f985a+0x1e/0x24 __bpf_prog_run include/linux/filter.h:721 [inline] bpf_prog_run_xdp include/net/xdp.h:696 [inline] bpf_prog_run_generic_xdp+0x606/0x13d0 net/core/dev.c:5400 netif_receive_generic_xdp net/core/dev.c:5516 [inline] do_xdp_generic+0x9f7/0x11a0 net/core/dev.c:5578 __netif_receive_skb_core+0x18f4/0x4380 net/core/dev.c:5929 __netif_receive_skb_one_core net/core/dev.c:6117 [inline] __netif_receive_skb+0x72/0x380 net/core/dev.c:6232 netif_receive_skb_internal net/core/dev.c:6318 [inline] netif_receive_skb+0x1cb/0x790 net/core/dev.c:6377 tun_rx_batched+0x1b9/0x730 drivers/net/tun.c:1485 tun_get_user+0x2b65/0x3e90 drivers/net/tun.c:1953 tun_chr_write_iter+0x113/0x200 drivers/net/tun.c:1999 new_sync_write fs/read_write.c:593 [inline] vfs_write+0x5c9/0xb30 fs/read_write.c:686 ksys_write+0x145/0x250 fs/read_write.c:738 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f1abcd8d97f Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 f9 92 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 4c 93 02 00 48 RSP: 002b:00007ffd8234fcb0 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f1abcfe5fa0 RCX: 00007f1abcd8d97f RDX: 0000000000011dc0 RSI: 00002000000004c0 RDI: 00000000000000c8 RBP: 00007f1abce11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000011dc0 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f1abcfe5fa0 R14: 00007f1abcfe5fa0 R15: 0000000000000003