Extracting prog: 4m36.108258984s
Minimizing prog: 55m29.666131219s
Simplifying prog options: 0s
Extracting C: 37.883596234s
Simplifying C: 29m26.283310311s


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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r2=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r2}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program did not crash
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r2=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r2}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program crashed: possible deadlock in sch_direct_xmit
single: successfully extracted reproducer
found reproducer with 4 syscalls
minimizing guilty program
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX
detailed listing:
executing program 0:
socket$nl_route(0x10, 0x3, 0x0)
r0 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'erspan0\x00'})

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
socket$packet(0x11, 0x2, 0x300)
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
ioctl$sock_SIOCGIFINDEX(0xffffffffffffffff, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r1=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r1}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r0, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r1=>0x0})
sendmsg$nl_route(0xffffffffffffffff, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r1}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, 0x0)
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00'})
sendmsg$nl_route(r0, 0x0, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00'})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, 0x0}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00'})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={0x0}}, 0x0)

program did not crash
testing program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00'})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x30, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x10, 0x12, 0x0, 0x1, @gre={{0x8}, {0x4}}}]}, 0x30}}, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
simplifying C reproducer
testing compiled C program (duration=6m0s, {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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: no output from test machine
a never seen crash title: no output from test machine, ignore
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:false NetDevices:true NetReset:false Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:true UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing compiled C program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
program crashed: possible deadlock in sch_direct_xmit
testing program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r2=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r2}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program crashed: possible deadlock in sch_direct_xmit
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r2=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r2}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program crashed: possible deadlock in sch_direct_xmit
validation run: crashed=true
testing program (duration=6m0s, {Threaded:false Repeat:true 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$nl_route-socket$packet-ioctl$sock_SIOCGIFINDEX-sendmsg$nl_route
detailed listing:
executing program 0:
r0 = socket$nl_route(0x10, 0x3, 0x0)
r1 = socket$packet(0x11, 0x2, 0x300)
ioctl$sock_SIOCGIFINDEX(r1, 0x8933, &(0x7f0000000000)={'erspan0\x00', <r2=>0x0})
sendmsg$nl_route(r0, &(0x7f0000000080)={0x0, 0x0, &(0x7f0000000000)={&(0x7f0000000140)=@newlink={0x58, 0x10, 0x439, 0x0, 0x0, {0x0, 0x0, 0x0, 0x0, 0x9801}, [@IFLA_LINKINFO={0x38, 0x12, 0x0, 0x1, @gre={{0x8}, {0x2c, 0x2, 0x0, 0x1, [@IFLA_GRE_REMOTE={0x8, 0x7, @loopback}, @IFLA_GRE_OFLAGS={0x6, 0x3, 0x3d}, @IFLA_GRE_LINK={0x8, 0x1, r2}, @IFLA_GRE_TOS={0x5, 0x9, 0x1}, @IFLA_GRE_OKEY={0x8}]}}}]}, 0x58}}, 0x0)

program crashed: possible deadlock in sch_direct_xmit
validation run: crashed=true
reproducing took 1h35m5.735473259s
repro crashed as (corrupted=false):
============================================
WARNING: possible recursive locking detected
6.16.0-syzkaller-06574-gd9104cec3e8f #0 Not tainted
--------------------------------------------
kworker/0:3/5923 is trying to acquire lock:
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: sch_direct_xmit+0x153/0x4b0 net/sched/sch_generic.c:342

but task is already holding lock:
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __dev_queue_xmit+0x1676/0x3b50 net/core/dev.c:4709

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&qdisc_xmit_lock_key#3);
  lock(&qdisc_xmit_lock_key#3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

11 locks held by kworker/0:3/5923:
 #0: ffff88814c20f948 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
 #0: ffff88814c20f948 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
 #1: ffffc90004017bc0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
 #1: ffffc90004017bc0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
 #2: ffff8880278fb538 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2d/0xd60 net/ipv6/mcast.c:2697
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1de/0xd80 net/ipv6/mcast.c:1832
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: ip6_finish_output2+0x701/0x16a0 net/ipv6/ip6_output.c:126
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:892 [inline]
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27b/0x3b50 net/core/dev.c:4638
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __dev_queue_xmit+0x1676/0x3b50 net/core/dev.c:4709
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x452/0x1160 net/ipv4/ip_output.c:228
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270 net/ipv4/arp.c:662
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:892 [inline]
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27b/0x3b50 net/core/dev.c:4638
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:197 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:4089 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0x138a/0x3b50 net/core/dev.c:4679

stack backtrace:
CPU: 0 UID: 0 PID: 5923 Comm: kworker/0:3 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: mld mld_ifc_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3895
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 __netif_tx_lock include/linux/netdevice.h:4656 [inline]
 sch_direct_xmit+0x153/0x4b0 net/sched/sch_generic.c:342
 __dev_xmit_skb net/core/dev.c:4102 [inline]
 __dev_queue_xmit+0x1857/0x3b50 net/core/dev.c:4679
 NF_HOOK+0x30d/0x3a0 include/linux/netfilter.h:318
 arp_xmit+0x16c/0x270 net/ipv4/arp.c:664
 arp_solicit+0xc1d/0xe60 net/ipv4/arp.c:392
 neigh_probe net/core/neighbour.c:1098 [inline]
 __neigh_event_send+0xf70/0x1560 net/core/neighbour.c:1271
 neigh_event_send_probe include/net/neighbour.h:471 [inline]
 neigh_event_send include/net/neighbour.h:477 [inline]
 neigh_resolve_output+0x198/0x750 net/core/neighbour.c:1579
 neigh_output include/net/neighbour.h:547 [inline]
 ip_finish_output2+0xd3d/0x1160 net/ipv4/ip_output.c:235
 iptunnel_xmit+0x592/0xa40 net/ipv4/ip_tunnel_core.c:84
 ip_tunnel_xmit+0x1c41/0x2390 net/ipv4/ip_tunnel.c:859
 __gre_xmit net/ipv4/ip_gre.c:488 [inline]
 ipgre_xmit+0x89e/0xc50 net/ipv4/ip_gre.c:692
 __netdev_start_xmit include/linux/netdevice.h:5219 [inline]
 netdev_start_xmit include/linux/netdevice.h:5228 [inline]
 xmit_one net/core/dev.c:3827 [inline]
 dev_hard_start_xmit+0x2d4/0x830 net/core/dev.c:3843
 __dev_queue_xmit+0x1b8d/0x3b50 net/core/dev.c:4713
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0x11fe/0x16a0 net/ipv6/ip6_output.c:141
 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318
 mld_sendpack+0x800/0xd80 net/ipv6/mcast.c:1860
 mld_send_cr net/ipv6/mcast.c:2159 [inline]
 mld_ifc_work+0x83e/0xd60 net/ipv6/mcast.c:2698
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

final repro crashed as (corrupted=false):
============================================
WARNING: possible recursive locking detected
6.16.0-syzkaller-06574-gd9104cec3e8f #0 Not tainted
--------------------------------------------
kworker/0:3/5923 is trying to acquire lock:
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
ffff88807bd37958 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: sch_direct_xmit+0x153/0x4b0 net/sched/sch_generic.c:342

but task is already holding lock:
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __dev_queue_xmit+0x1676/0x3b50 net/core/dev.c:4709

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&qdisc_xmit_lock_key#3);
  lock(&qdisc_xmit_lock_key#3);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

11 locks held by kworker/0:3/5923:
 #0: ffff88814c20f948 ((wq_completion)mld){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3213 [inline]
 #0: ffff88814c20f948 ((wq_completion)mld){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 kernel/workqueue.c:3321
 #1: ffffc90004017bc0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3214 [inline]
 #1: ffffc90004017bc0 ((work_completion)(&(&idev->mc_ifc_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 kernel/workqueue.c:3321
 #2: ffff8880278fb538 (&idev->mc_lock){+.+.}-{4:4}, at: mld_ifc_work+0x2d/0xd60 net/ipv6/mcast.c:2697
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #3: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: mld_sendpack+0x1de/0xd80 net/ipv6/mcast.c:1832
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #4: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: ip6_finish_output2+0x701/0x16a0 net/ipv6/ip6_output.c:126
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:892 [inline]
 #5: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27b/0x3b50 net/core/dev.c:4638
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: spin_lock include/linux/spinlock.h:351 [inline]
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __netif_tx_lock include/linux/netdevice.h:4656 [inline]
 #6: ffff888033477d58 (&qdisc_xmit_lock_key#3){+...}-{3:3}, at: __dev_queue_xmit+0x1676/0x3b50 net/core/dev.c:4709
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #7: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: ip_finish_output2+0x452/0x1160 net/ipv4/ip_output.c:228
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
 #8: ffffffff8e13c4e0 (rcu_read_lock){....}-{1:3}, at: arp_xmit+0x23/0x270 net/ipv4/arp.c:662
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: rcu_read_lock_bh include/linux/rcupdate.h:892 [inline]
 #9: ffffffff8e13c540 (rcu_read_lock_bh){....}-{1:3}, at: __dev_queue_xmit+0x27b/0x3b50 net/core/dev.c:4638
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: spin_trylock include/linux/spinlock.h:361 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: qdisc_run_begin include/net/sch_generic.h:197 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_xmit_skb net/core/dev.c:4089 [inline]
 #10: ffff888031b07258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock#3){+...}-{3:3}, at: __dev_queue_xmit+0x138a/0x3b50 net/core/dev.c:4679

stack backtrace:
CPU: 0 UID: 0 PID: 5923 Comm: kworker/0:3 Not tainted 6.16.0-syzkaller-06574-gd9104cec3e8f #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: mld mld_ifc_work
Call Trace:
 <TASK>
 dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
 print_deadlock_bug+0x28b/0x2a0 kernel/locking/lockdep.c:3041
 check_deadlock kernel/locking/lockdep.c:3093 [inline]
 validate_chain+0x1a3f/0x2140 kernel/locking/lockdep.c:3895
 __lock_acquire+0xab9/0xd20 kernel/locking/lockdep.c:5237
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 __netif_tx_lock include/linux/netdevice.h:4656 [inline]
 sch_direct_xmit+0x153/0x4b0 net/sched/sch_generic.c:342
 __dev_xmit_skb net/core/dev.c:4102 [inline]
 __dev_queue_xmit+0x1857/0x3b50 net/core/dev.c:4679
 NF_HOOK+0x30d/0x3a0 include/linux/netfilter.h:318
 arp_xmit+0x16c/0x270 net/ipv4/arp.c:664
 arp_solicit+0xc1d/0xe60 net/ipv4/arp.c:392
 neigh_probe net/core/neighbour.c:1098 [inline]
 __neigh_event_send+0xf70/0x1560 net/core/neighbour.c:1271
 neigh_event_send_probe include/net/neighbour.h:471 [inline]
 neigh_event_send include/net/neighbour.h:477 [inline]
 neigh_resolve_output+0x198/0x750 net/core/neighbour.c:1579
 neigh_output include/net/neighbour.h:547 [inline]
 ip_finish_output2+0xd3d/0x1160 net/ipv4/ip_output.c:235
 iptunnel_xmit+0x592/0xa40 net/ipv4/ip_tunnel_core.c:84
 ip_tunnel_xmit+0x1c41/0x2390 net/ipv4/ip_tunnel.c:859
 __gre_xmit net/ipv4/ip_gre.c:488 [inline]
 ipgre_xmit+0x89e/0xc50 net/ipv4/ip_gre.c:692
 __netdev_start_xmit include/linux/netdevice.h:5219 [inline]
 netdev_start_xmit include/linux/netdevice.h:5228 [inline]
 xmit_one net/core/dev.c:3827 [inline]
 dev_hard_start_xmit+0x2d4/0x830 net/core/dev.c:3843
 __dev_queue_xmit+0x1b8d/0x3b50 net/core/dev.c:4713
 neigh_output include/net/neighbour.h:547 [inline]
 ip6_finish_output2+0x11fe/0x16a0 net/ipv6/ip6_output.c:141
 NF_HOOK+0x9e/0x380 include/linux/netfilter.h:318
 mld_sendpack+0x800/0xd80 net/ipv6/mcast.c:1860
 mld_send_cr net/ipv6/mcast.c:2159 [inline]
 mld_ifc_work+0x83e/0xd60 net/ipv6/mcast.c:2698
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0xae1/0x17b0 kernel/workqueue.c:3321
 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3402
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>