Extracting prog: 22.266805378s
Minimizing prog: 2m36.369038299s
Simplifying prog options: 0s
Extracting C: 11.664940762s
Simplifying C: 1m47.992705351s


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:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program crashed: panic: UserChainTarget should never be called.
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-syz_emit_ethernet
detailed listing:
executing program 0:
socket$inet6(0xa, 0x3, 0xff)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
setsockopt$IP6T_SO_SET_REPLACE(0xffffffffffffffff, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, 0x0, 0x0)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program did not crash
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x0, 0x0, 0x0)

program did not crash
extracting C reproducer
testing compiled C program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
simplifying C reproducer
testing compiled C program (duration=30s, {Threaded:false Repeat:true RepeatTimes:0 Procs:4 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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program did not crash
testing compiled C program (duration=30s, {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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program did not crash
testing compiled C program (duration=30s, {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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): socket$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing compiled C program (duration=30s, {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$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
program crashed: panic: UserChainTarget should never be called.
testing program (duration=30s, {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$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program crashed: panic: UserChainTarget should never be called.
validation run: crashed=true
testing program (duration=30s, {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$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program crashed: panic: UserChainTarget should never be called.
validation run: crashed=true
testing program (duration=30s, {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$inet6-setsockopt$IP6T_SO_SET_REPLACE-syz_emit_ethernet
detailed listing:
executing program 0:
r0 = socket$inet6(0xa, 0x3, 0xff)
setsockopt$IP6T_SO_SET_REPLACE(r0, 0x29, 0x40, &(0x7f00000004c0)=@filter={'filter\x00', 0xe, 0x4, 0x358, 0xffffffff, 0xd0, 0x1b8, 0x0, 0xffffffff, 0xffffffff, 0x288, 0x288, 0x288, 0xffffffff, 0x4, 0x0, {[{{@uncond, 0x0, 0xa8, 0xd0}, @common=@unspec=@STANDARD={0x28, '\x00', 0x0, 0x1b8}}, {{@uncond, 0x0, 0xa8, 0xe8}, @common=@unspec=@ERROR={0x40, 'ERROR\x00', 0x0, "b60aa829396d988bc9686f9cca6b4a0a7ede93866e0a2fabb9b83fd7a935"}}, {{@ipv6={@empty, @empty}, 0x0, 0xa8, 0xd0}, @REJECT={0x28, 'REJECT\x00', 0x0, {0x4}}}], {{'\x00', 0x0, 0xa8, 0xd0}, {0x28}}}}, 0x3b8)
syz_emit_ethernet(0x4a, &(0x7f00000001c0)={@local, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "e0ffac", 0x14, 0x2c, 0x0, @remote, @local, {[], {{0x2b00, 0xfffc, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0)

program crashed: panic: UserChainTarget should never be called.
validation run: crashed=true
reproducing took 5m34.827600879s
repro crashed as (corrupted=false):
panic: UserChainTarget should never be called.

goroutine 1143 gp=0x6a43494dba40 m=18 mp=0x6a4348b5c008 [running]:
panic({0xd05280?, 0x10526f0?})
	GOROOT/src/runtime/panic.go:879 +0x15c fp=0x6a43493eff00 sp=0x6a43493efe50 pc=0x960ac
gvisor.dev/gvisor/pkg/tcpip/stack.(*UserChainTarget).Action(...)
	pkg/tcpip/stack/iptables_targets.go:174
gvisor.dev/gvisor/pkg/sentry/socket/netfilter.(*userChainTarget).Action(0x0?, 0x0?, 0x0?, 0x10?, {0x0?, 0x0?})
	<autogenerated>:1 +0x30 fp=0x6a43493eff20 sp=0x6a43493eff00 pc=0x6ffbf0
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).checkRule(0x2?, 0x1, 0x6a4348a40420, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, ...}, ...}, ...)
	pkg/tcpip/stack/iptables.go:774 +0x1b0 fp=0x6a43493f0130 sp=0x6a43493eff20 pc=0x5d4ea0
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).checkChain(0x6a4348dc6c08, 0x1, 0x6a4348a40420, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, ...}, ...}, ...)
	pkg/tcpip/stack/iptables.go:705 +0xb0 fp=0x6a43493f0220 sp=0x6a43493f0130 pc=0x5d4b20
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).check(0xffffffffffffffff?, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, 0xffffffffffffffff}, {0xffffffffffffffff, ...}}, ...)
	pkg/tcpip/stack/iptables.go:650 +0xa0 fp=0x6a43493f03f0 sp=0x6a43493f0220 pc=0x5d46e0
gvisor.dev/gvisor/pkg/tcpip/stack.check(0x6a4348a40420?, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, 0xffffffffffffffff}, {0xffffffffffffffff, ...}}, ...)
	pkg/tcpip/stack/iptables.go:640 +0x58 fp=0x6a43493f04c0 sp=0x6a43493f03f0 pc=0x5d45f8
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).CheckInput(0x6a4348dc6c08, 0x6a4348a40420, {0x6a43485d0be8, 0x7})
	pkg/tcpip/stack/iptables.go:459 +0x188 fp=0x6a43493f07f0 sp=0x6a43493f04c0 pc=0x5d3c48
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally(0x6a4348c35508, {0x6a43489cc10e, 0x30, 0x72}, 0x6a4348a40420, {0x6a43485d0be8?, 0x5?})
	pkg/tcpip/network/ipv6/ipv6.go:1436 +0x88 fp=0x6a43493f0a50 sp=0x6a43493f07f0 pc=0x77c5d8
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket(0x6a4348c35508, {0x6a43489cc10e, 0x30, 0x72}, 0x6a4348a40420, {0x6a43485d0be8, 0x7})
	pkg/tcpip/network/ipv6/ipv6.go:1425 +0x4b8 fp=0x6a43493f0d40 sp=0x6a43493f0a50 pc=0x77c4f8
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0x6a4348c35508, 0x6a4348a40420)
	pkg/tcpip/network/ipv6/ipv6.go:1195 +0x740 fp=0x6a43493f12a0 sp=0x6a43493f0d40 pc=0x77a880
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0x6a43487d1b08, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/stack/nic.go:781 +0x1a0 fp=0x6a43493f12e0 sp=0x6a43493f12a0 pc=0x5e0b80
gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket(0x6a43493f1348?, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/nested/nested.go:61 +0xa8 fp=0x6a43493f1320 sp=0x6a43493f12e0 pc=0x799048
gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*Endpoint).DeliverNetworkPacket(0x6a4348ed64b0, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/packetsocket/packetsocket.go:50 +0x3c fp=0x6a43493f1350 sp=0x6a43493f1320 pc=0x79a7dc
gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound(0x6a4348ba2a80, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/channel/channel.go:208 +0x6c fp=0x6a43493f1390 sp=0x6a43493f1350 pc=0x79d9dc
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0x6a43492230b0, 0x6a4349487410)
	pkg/tcpip/link/tun/device.go:279 +0x4a4 fp=0x6a43493f1540 sp=0x6a43493f1390 pc=0x7a0194
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0x6a43489c3808?, {0x107ed00, 0x6a434914b208}, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, ...)
	pkg/sentry/devices/tundev/tundev.go:176 +0x20c fp=0x6a43493f1600 sp=0x6a43493f1540 pc=0xa74c2c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0x6a4349223040, {0x107ed00, 0x6a434914b208}, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, ...)
	pkg/sentry/vfs/file_description.go:728 +0x58 fp=0x6a43493f1680 sp=0x6a43493f1600 pc=0x416a68
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write(0x6a434914b208, 0x6a4349223040, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, {0x0?})
	pkg/sentry/syscalls/linux/sys_read_write.go:333 +0x70 fp=0x6a43493f1800 sp=0x6a43493f1680 pc=0x817490
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write(0x6a434914b208, 0x0?, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_read_write.go:304 +0x100 fp=0x6a43493f1940 sp=0x6a43493f1800 pc=0x816980
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x4e4 fp=0x6a43493f1c80 sp=0x6a43493f1940 pc=0x6a25b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x3c fp=0x6a43493f1ce0 sp=0x6a43493f1c80 pc=0x6a33dc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x58 fp=0x6a43493f1d30 sp=0x6a43493f1ce0 pc=0x6a3108
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x6a4348a32f20?)
	pkg/sentry/kernel/task_syscall.go:258 +0x238 fp=0x6a43493f1e10 sp=0x6a43493f1d30 pc=0x6a2ec8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x6a4349028900?, 0x6a434914b208)
	pkg/sentry/kernel/task_run.go:258 +0xd04 fp=0x6a43493f1f10 sp=0x6a43493f1e10 pc=0x6993a4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x6a434914b208, 0x5b)
	pkg/sentry/kernel/task_run.go:89 +0x1a8 fp=0x6a43493f1fb0 sp=0x6a43493f1f10 pc=0x6981f8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:531 +0x20 fp=0x6a43493f1fd0 sp=0x6a43493f1fb0 pc=0x6a1330
runtime.goexit({})
	src/runtime/asm_arm64.s:1447 +0x4 fp=0x6a43493f1fd0 sp=0x6a43493f1fd0 pc=0x9e984
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 917
	pkg/sentry/kernel/task_start.go:531 +0xc0

final repro crashed as (corrupted=false):
panic: UserChainTarget should never be called.

goroutine 1143 gp=0x6a43494dba40 m=18 mp=0x6a4348b5c008 [running]:
panic({0xd05280?, 0x10526f0?})
	GOROOT/src/runtime/panic.go:879 +0x15c fp=0x6a43493eff00 sp=0x6a43493efe50 pc=0x960ac
gvisor.dev/gvisor/pkg/tcpip/stack.(*UserChainTarget).Action(...)
	pkg/tcpip/stack/iptables_targets.go:174
gvisor.dev/gvisor/pkg/sentry/socket/netfilter.(*userChainTarget).Action(0x0?, 0x0?, 0x0?, 0x10?, {0x0?, 0x0?})
	<autogenerated>:1 +0x30 fp=0x6a43493eff20 sp=0x6a43493eff00 pc=0x6ffbf0
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).checkRule(0x2?, 0x1, 0x6a4348a40420, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, ...}, ...}, ...)
	pkg/tcpip/stack/iptables.go:774 +0x1b0 fp=0x6a43493f0130 sp=0x6a43493eff20 pc=0x5d4ea0
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).checkChain(0x6a4348dc6c08, 0x1, 0x6a4348a40420, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, ...}, ...}, ...)
	pkg/tcpip/stack/iptables.go:705 +0xb0 fp=0x6a43493f0220 sp=0x6a43493f0130 pc=0x5d4b20
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).check(0xffffffffffffffff?, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, 0xffffffffffffffff}, {0xffffffffffffffff, ...}}, ...)
	pkg/tcpip/stack/iptables.go:650 +0xa0 fp=0x6a43493f03f0 sp=0x6a43493f0220 pc=0x5d46e0
gvisor.dev/gvisor/pkg/tcpip/stack.check(0x6a4348a40420?, {{0x6a434963a808, 0x4, 0x4}, {0xffffffffffffffff, 0x1, 0x2, 0x0, 0xffffffffffffffff}, {0xffffffffffffffff, ...}}, ...)
	pkg/tcpip/stack/iptables.go:640 +0x58 fp=0x6a43493f04c0 sp=0x6a43493f03f0 pc=0x5d45f8
gvisor.dev/gvisor/pkg/tcpip/stack.(*IPTables).CheckInput(0x6a4348dc6c08, 0x6a4348a40420, {0x6a43485d0be8, 0x7})
	pkg/tcpip/stack/iptables.go:459 +0x188 fp=0x6a43493f07f0 sp=0x6a43493f04c0 pc=0x5d3c48
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally(0x6a4348c35508, {0x6a43489cc10e, 0x30, 0x72}, 0x6a4348a40420, {0x6a43485d0be8?, 0x5?})
	pkg/tcpip/network/ipv6/ipv6.go:1436 +0x88 fp=0x6a43493f0a50 sp=0x6a43493f07f0 pc=0x77c5d8
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket(0x6a4348c35508, {0x6a43489cc10e, 0x30, 0x72}, 0x6a4348a40420, {0x6a43485d0be8, 0x7})
	pkg/tcpip/network/ipv6/ipv6.go:1425 +0x4b8 fp=0x6a43493f0d40 sp=0x6a43493f0a50 pc=0x77c4f8
gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket(0x6a4348c35508, 0x6a4348a40420)
	pkg/tcpip/network/ipv6/ipv6.go:1195 +0x740 fp=0x6a43493f12a0 sp=0x6a43493f0d40 pc=0x77a880
gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket(0x6a43487d1b08, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/stack/nic.go:781 +0x1a0 fp=0x6a43493f12e0 sp=0x6a43493f12a0 pc=0x5e0b80
gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket(0x6a43493f1348?, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/nested/nested.go:61 +0xa8 fp=0x6a43493f1320 sp=0x6a43493f12e0 pc=0x799048
gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*Endpoint).DeliverNetworkPacket(0x6a4348ed64b0, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/packetsocket/packetsocket.go:50 +0x3c fp=0x6a43493f1350 sp=0x6a43493f1320 pc=0x79a7dc
gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound(0x6a4348ba2a80, 0x86dd, 0x6a4348a40420)
	pkg/tcpip/link/channel/channel.go:208 +0x6c fp=0x6a43493f1390 sp=0x6a43493f1350 pc=0x79d9dc
gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write(0x6a43492230b0, 0x6a4349487410)
	pkg/tcpip/link/tun/device.go:279 +0x4a4 fp=0x6a43493f1540 sp=0x6a43493f1390 pc=0x7a0194
gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write(0x6a43489c3808?, {0x107ed00, 0x6a434914b208}, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, ...)
	pkg/sentry/devices/tundev/tundev.go:176 +0x20c fp=0x6a43493f1600 sp=0x6a43493f1540 pc=0xa74c2c
gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write(0x6a4349223040, {0x107ed00, 0x6a434914b208}, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, ...)
	pkg/sentry/vfs/file_description.go:728 +0x58 fp=0x6a43493f1680 sp=0x6a43493f1600 pc=0x416a68
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write(0x6a434914b208, 0x6a4349223040, {{0x10749b8, 0x6a434908e008}, {0x0, 0x1, 0x200001c0, 0x4a}, {0x0}}, {0x0?})
	pkg/sentry/syscalls/linux/sys_read_write.go:333 +0x70 fp=0x6a43493f1800 sp=0x6a43493f1680 pc=0x817490
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write(0x6a434914b208, 0x0?, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/syscalls/linux/sys_read_write.go:304 +0x100 fp=0x6a43493f1940 sp=0x6a43493f1800 pc=0x816980
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:143 +0x4e4 fp=0x6a43493f1c80 sp=0x6a43493f1940 pc=0x6a25b4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:323 +0x3c fp=0x6a43493f1ce0 sp=0x6a43493f1c80 pc=0x6a33dc
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x6a434914b208, 0x40, {{0xc8}, {0x200001c0}, {0x4a}, {0x0}, {0x0}, {0x0}})
	pkg/sentry/kernel/task_syscall.go:283 +0x58 fp=0x6a43493f1d30 sp=0x6a43493f1ce0 pc=0x6a3108
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0x6a4348a32f20?)
	pkg/sentry/kernel/task_syscall.go:258 +0x238 fp=0x6a43493f1e10 sp=0x6a43493f1d30 pc=0x6a2ec8
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x6a4349028900?, 0x6a434914b208)
	pkg/sentry/kernel/task_run.go:258 +0xd04 fp=0x6a43493f1f10 sp=0x6a43493f1e10 pc=0x6993a4
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0x6a434914b208, 0x5b)
	pkg/sentry/kernel/task_run.go:89 +0x1a8 fp=0x6a43493f1fb0 sp=0x6a43493f1f10 pc=0x6981f8
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:531 +0x20 fp=0x6a43493f1fd0 sp=0x6a43493f1fb0 pc=0x6a1330
runtime.goexit({})
	src/runtime/asm_arm64.s:1447 +0x4 fp=0x6a43493f1fd0 sp=0x6a43493f1fd0 pc=0x9e984
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 917
	pkg/sentry/kernel/task_start.go:531 +0xc0