Extracting prog: 1m42.345187178s Minimizing prog: 27m27.572294041s Simplifying prog options: 0s Extracting C: 1m1.546189894s Simplifying C: 22m14.068198994s extracting reproducer from 51 programs first checking the prog from the crash report single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program crashed: WARNING in __dev_queue_xmit single: successfully extracted reproducer found reproducer with 9 syscalls minimizing guilty program testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00'}) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) socket$nl_generic(0x10, 0x3, 0x10) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, 0x0, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) ioctl$ifreq_SIOCGIFINDEX_wireguard(0xffffffffffffffff, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r3, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r1, &(0x7f0000000210)="01", 0x1) r2 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r2, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r3, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) read(r1, &(0x7f0000800000)=""/8, 0x8) r2 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r2, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r3, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) write(0xffffffffffffffff, &(0x7f0000000210)="01", 0x1) read(0xffffffffffffffff, &(0x7f0000800000)=""/8, 0x8) r1 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r1, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r2, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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}}): setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: setsockopt$packet_tx_ring(0xffffffffffffffff, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, 0xffffffffffffffff, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r1, &(0x7f0000000210)="01", 0x1) read(r0, &(0x7f0000800000)=""/8, 0x8) r2 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r2, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(0xffffffffffffffff, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r3, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, 0x0, 0x0) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(0x0, 0x0) write(0xffffffffffffffff, &(0x7f0000000210)="01", 0x1) read(0xffffffffffffffff, &(0x7f0000800000)=""/8, 0x8) r1 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r1, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r2, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, 0x0, 0x0) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210), 0x0) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, 0x0, 0x0) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, 0x0) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, 0x0, 0x1, 0x0, 0x0, @multicast}, 0x14) program did not crash testing program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00'}) sendto$packet(r0, 0x0, 0x0, 0x4000010, 0x0, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=45.426700018s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit simplifying C reproducer testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:namespace SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:namespace 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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program did not crash testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program did not crash testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing compiled C program (duration=45.426700018s, {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: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$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet program crashed: WARNING in __dev_queue_xmit testing program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program crashed: WARNING in __dev_queue_xmit validation run: crashed=true testing program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program crashed: WARNING in __dev_queue_xmit validation run: crashed=true testing program (duration=45.426700018s, {Threaded:false Repeat:false RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-setsockopt$packet_tx_ring-mmap-pipe2-write-read-socket$nl_generic-ioctl$ifreq_SIOCGIFINDEX_wireguard-sendto$packet detailed listing: executing program 0: r0 = socket$packet(0x11, 0x2, 0x300) setsockopt$packet_tx_ring(r0, 0x107, 0xd, &(0x7f0000000080)=@req={0x800000, 0x1, 0x1000, 0x800}, 0x10) mmap(&(0x7f0000800000/0x800000)=nil, 0x800000, 0x3, 0x11, r0, 0x0) pipe2(&(0x7f0000000200)={0x0, 0x0}, 0x0) write(r2, &(0x7f0000000210)="01", 0x1) read(r1, &(0x7f0000800000)=""/8, 0x8) r3 = socket$nl_generic(0x10, 0x3, 0x10) ioctl$ifreq_SIOCGIFINDEX_wireguard(r3, 0x8933, &(0x7f0000000280)={'wg0\x00', 0x0}) sendto$packet(r0, 0x0, 0x0, 0x4000010, &(0x7f0000000000)={0x11, 0x10, r4, 0x1, 0x0, 0x0, @multicast}, 0x14) program crashed: WARNING in __dev_queue_xmit validation run: crashed=true reproducing took 58m0.201485273s repro crashed as (corrupted=false): ------------[ cut here ]------------ skb_assert_len WARNING: ./include/linux/skbuff.h:2753 at skb_assert_len include/linux/skbuff.h:2753 [inline], CPU#1: syz.0.17/5858 WARNING: ./include/linux/skbuff.h:2753 at __dev_queue_xmit+0x1fb8/0x3820 net/core/dev.c:4781, CPU#1: syz.0.17/5858 Modules linked in: CPU: 1 UID: 0 PID: 5858 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:skb_assert_len include/linux/skbuff.h:2753 [inline] RIP: 0010:__dev_queue_xmit+0x1fbf/0x3820 net/core/dev.c:4781 Code: 48 c7 44 24 10 00 00 00 00 e9 50 fe ff ff e8 28 45 26 f8 90 0f 0b 90 e9 d6 e1 ff ff 48 8d 3d 48 00 c6 06 48 c7 c6 7c bf 43 8e <67> 48 0f b9 3a 80 3d ee 0a a0 06 01 0f 85 86 03 00 00 e8 fa 44 26 RSP: 0018:ffffc9000302f660 EFLAGS: 00010246 RAX: ffffffff89a09fa1 RBX: ffff888072e33210 RCX: 0000000000000000 RDX: ffff8880304add00 RSI: ffffffff8e43bf7c RDI: ffffffff9066bdc0 RBP: ffffc9000302f910 R08: ffff8880320fa8a7 R09: 1ffff1100641f514 R10: dffffc0000000000 R11: ffffed100641f515 R12: dffffc0000000000 R13: 1ffff92000605eec R14: 0000000000000000 R15: ffff888072e33210 FS: 00005555691ef500(0000) GS:ffff888125055000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000080 CR3: 0000000071c02000 CR4: 00000000003526f0 Call Trace: tpacket_snd net/packet/af_packet.c:2907 [inline] packet_sendmsg+0x1f38/0x4e80 net/packet/af_packet.c:3134 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc81c19e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe08a96328 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc81c425fa0 RCX: 00007fc81c19e0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fc81c235024 R08: 0000200000000000 R09: 0000000000000014 R10: 0000000004000010 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc81c425fac R14: 00007fc81c425fa0 R15: 00007fc81c425fa0 ---------------- Code disassembly (best guess): 0: 48 c7 44 24 10 00 00 movq $0x0,0x10(%rsp) 7: 00 00 9: e9 50 fe ff ff jmp 0xfffffe5e e: e8 28 45 26 f8 call 0xf826453b 13: 90 nop 14: 0f 0b ud2 16: 90 nop 17: e9 d6 e1 ff ff jmp 0xffffe1f2 1c: 48 8d 3d 48 00 c6 06 lea 0x6c60048(%rip),%rdi # 0x6c6006b 23: 48 c7 c6 7c bf 43 8e mov $0xffffffff8e43bf7c,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 80 3d ee 0a a0 06 01 cmpb $0x1,0x6a00aee(%rip) # 0x6a00b24 36: 0f 85 86 03 00 00 jne 0x3c2 3c: e8 .byte 0xe8 3d: fa cli 3e: 44 rex.R 3f: 26 es final repro crashed as (corrupted=false): ------------[ cut here ]------------ skb_assert_len WARNING: ./include/linux/skbuff.h:2753 at skb_assert_len include/linux/skbuff.h:2753 [inline], CPU#1: syz.0.17/5858 WARNING: ./include/linux/skbuff.h:2753 at __dev_queue_xmit+0x1fb8/0x3820 net/core/dev.c:4781, CPU#1: syz.0.17/5858 Modules linked in: CPU: 1 UID: 0 PID: 5858 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:skb_assert_len include/linux/skbuff.h:2753 [inline] RIP: 0010:__dev_queue_xmit+0x1fbf/0x3820 net/core/dev.c:4781 Code: 48 c7 44 24 10 00 00 00 00 e9 50 fe ff ff e8 28 45 26 f8 90 0f 0b 90 e9 d6 e1 ff ff 48 8d 3d 48 00 c6 06 48 c7 c6 7c bf 43 8e <67> 48 0f b9 3a 80 3d ee 0a a0 06 01 0f 85 86 03 00 00 e8 fa 44 26 RSP: 0018:ffffc9000302f660 EFLAGS: 00010246 RAX: ffffffff89a09fa1 RBX: ffff888072e33210 RCX: 0000000000000000 RDX: ffff8880304add00 RSI: ffffffff8e43bf7c RDI: ffffffff9066bdc0 RBP: ffffc9000302f910 R08: ffff8880320fa8a7 R09: 1ffff1100641f514 R10: dffffc0000000000 R11: ffffed100641f515 R12: dffffc0000000000 R13: 1ffff92000605eec R14: 0000000000000000 R15: ffff888072e33210 FS: 00005555691ef500(0000) GS:ffff888125055000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000000080 CR3: 0000000071c02000 CR4: 00000000003526f0 Call Trace: tpacket_snd net/packet/af_packet.c:2907 [inline] packet_sendmsg+0x1f38/0x4e80 net/packet/af_packet.c:3134 sock_sendmsg_nosec+0x13a/0x180 net/socket.c:775 __sock_sendmsg net/socket.c:790 [inline] __sys_sendto+0x408/0x5a0 net/socket.c:2252 __do_sys_sendto net/socket.c:2259 [inline] __se_sys_sendto net/socket.c:2255 [inline] __x64_sys_sendto+0xde/0x100 net/socket.c:2255 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc81c19e0d9 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe08a96328 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fc81c425fa0 RCX: 00007fc81c19e0d9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00007fc81c235024 R08: 0000200000000000 R09: 0000000000000014 R10: 0000000004000010 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc81c425fac R14: 00007fc81c425fa0 R15: 00007fc81c425fa0 ---------------- Code disassembly (best guess): 0: 48 c7 44 24 10 00 00 movq $0x0,0x10(%rsp) 7: 00 00 9: e9 50 fe ff ff jmp 0xfffffe5e e: e8 28 45 26 f8 call 0xf826453b 13: 90 nop 14: 0f 0b ud2 16: 90 nop 17: e9 d6 e1 ff ff jmp 0xffffe1f2 1c: 48 8d 3d 48 00 c6 06 lea 0x6c60048(%rip),%rdi # 0x6c6006b 23: 48 c7 c6 7c bf 43 8e mov $0xffffffff8e43bf7c,%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 80 3d ee 0a a0 06 01 cmpb $0x1,0x6a00aee(%rip) # 0x6a00b24 36: 0f 85 86 03 00 00 jne 0x3c2 3c: e8 .byte 0xe8 3d: fa cli 3e: 44 rex.R 3f: 26 es