Extracting prog: 1m12.289399675s Minimizing prog: 12m46.527347694s Simplifying prog options: 1m25.172595387s Extracting C: 36.520629285s Simplifying C: 0s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 45s testing program (duration=45s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async, rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program crashed: DATA RACE in buffer.(*ViewList).Remove single: successfully extracted reproducer found reproducer with 2 syscalls minimizing guilty program testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async, rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, 0x0, 0x0) (async, rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB], 0x0) (async, rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async, rerun: 64) syz_emit_ethernet(0x0, 0x0, 0x0) (rerun: 64) program did not crash testing program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async, rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) program did not crash extracting C reproducer testing compiled C program (duration=1m25.095163867s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet program crashed: DATA RACE in buffer.(*Buffer).PullUp a never seen crash title: DATA RACE in buffer.(*Buffer).PullUp, ignore simplifying guilty program options testing program (duration=1m25.095163867s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:10 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 LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): syz_emit_ethernet-syz_emit_ethernet detailed listing: executing program 0: syz_emit_ethernet(0x46, &(0x7f0000000000)=ANY=[@ANYBLOB="ffffffffffffffffffffffff86dd6060626000102c00fe8000000000000000000000000000bbfe8000000000000000000000000000aa11000001"], 0x0) (async, rerun: 64) syz_emit_ethernet(0x52, &(0x7f00000007c0)={@broadcast, @local, @void, {@ipv6={0x86dd, @tcp={0x0, 0x6, "1927f2", 0x1c, 0x2c, 0x0, @remote, @local, {[@routing={0x0, 0x0, 0x0, 0xe}], {{0x8000, 0x0, 0x41424344, 0x41424344, 0x0, 0x0, 0x5}}}}}}}, 0x0) (rerun: 64) program did not crash reproducing took 16m0.509988231s repro crashed as (corrupted=false): WARNING: DATA RACE Write at 0x00c0018b4148 by goroutine 5616: gvisor.dev/gvisor/pkg/buffer.(*ViewList).Remove() bazel-out/k8-fastbuild/bin/pkg/buffer/view_list.go:190 +0xe4 gvisor.dev/gvisor/pkg/buffer.(*Buffer).removeView() pkg/buffer/buffer.go:36 +0x46 gvisor.dev/gvisor/pkg/buffer.(*Buffer).advanceRead() pkg/buffer/buffer.go:128 +0x8f gvisor.dev/gvisor/pkg/buffer.(*Buffer).TrimFront() pkg/buffer/buffer.go:83 +0xa9 gvisor.dev/gvisor/pkg/tcpip/stack.MergeFragment() pkg/tcpip/stack/packet_buffer.go:607 +0x96 gvisor.dev/gvisor/pkg/tcpip/network/internal/fragmentation.(*reassembler).process() pkg/tcpip/network/internal/fragmentation/reassembler.go:174 +0x11a4 gvisor.dev/gvisor/pkg/tcpip/network/internal/fragmentation.(*Fragmentation).Process() pkg/tcpip/network/internal/fragmentation/fragmentation.go:201 +0xb08 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processFragmentExtHdr() pkg/tcpip/network/ipv6/ipv6.go:1870 +0xb47 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeader() pkg/tcpip/network/ipv6/ipv6.go:1455 +0x848 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeaders() pkg/tcpip/network/ipv6/ipv6.go:1509 +0x484 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally() pkg/tcpip/network/ipv6/ipv6.go:1397 +0x198 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket() pkg/tcpip/network/ipv6/ipv6.go:1376 +0x4b7 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket() pkg/tcpip/network/ipv6/ipv6.go:1146 +0xcd4 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket() pkg/tcpip/stack/nic.go:769 +0x1ea gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket() pkg/tcpip/link/nested/nested.go:61 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*endpoint).DeliverNetworkPacket() pkg/tcpip/link/packetsocket/packetsocket.go:47 +0x5e gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound() pkg/tcpip/link/channel/channel.go:207 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write() pkg/tcpip/link/tun/device.go:250 +0x805 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write() pkg/sentry/devices/tundev/tundev.go:163 +0x591 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write() pkg/sentry/vfs/file_description.go:679 +0x144 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write() pkg/sentry/syscalls/linux/sys_read_write.go:347 +0xa4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write() pkg/sentry/syscalls/linux/sys_read_write.go:316 +0x38e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:143 +0xb9e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:323 +0x84 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:283 +0xc6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:258 +0x549 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:269 +0x2294 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:97 +0x41a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x44 Previous read at 0x00c0018b4148 by goroutine 5619: gvisor.dev/gvisor/pkg/buffer.(*ViewList).Front() bazel-out/k8-fastbuild/bin/pkg/buffer/view_list.go:52 +0x33 gvisor.dev/gvisor/pkg/buffer.(*Buffer).PullUp() pkg/buffer/buffer.go:313 +0x118 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).headerView() pkg/tcpip/stack/packet_buffer.go:364 +0x184 gvisor.dev/gvisor/pkg/tcpip/stack.PacketHeader.Slice() pkg/tcpip/stack/packet_buffer.go:504 +0x58 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeaders() pkg/tcpip/network/ipv6/ipv6.go:1508 +0x448 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally() pkg/tcpip/network/ipv6/ipv6.go:1397 +0x198 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket() pkg/tcpip/network/ipv6/ipv6.go:1376 +0x4b7 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket() pkg/tcpip/network/ipv6/ipv6.go:1146 +0xcd4 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket() pkg/tcpip/stack/nic.go:769 +0x1ea gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket() pkg/tcpip/link/nested/nested.go:61 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*endpoint).DeliverNetworkPacket() pkg/tcpip/link/packetsocket/packetsocket.go:47 +0x5e gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound() pkg/tcpip/link/channel/channel.go:207 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write() pkg/tcpip/link/tun/device.go:250 +0x805 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write() pkg/sentry/devices/tundev/tundev.go:163 +0x591 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write() pkg/sentry/vfs/file_description.go:679 +0x144 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write() pkg/sentry/syscalls/linux/sys_read_write.go:347 +0xa4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write() pkg/sentry/syscalls/linux/sys_read_write.go:316 +0x38e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:143 +0xb9e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:323 +0x84 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:283 +0xc6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:258 +0x549 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:269 +0x2294 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:97 +0x41a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x44 final repro crashed as (corrupted=false): WARNING: DATA RACE Write at 0x00c0018b4148 by goroutine 5616: gvisor.dev/gvisor/pkg/buffer.(*ViewList).Remove() bazel-out/k8-fastbuild/bin/pkg/buffer/view_list.go:190 +0xe4 gvisor.dev/gvisor/pkg/buffer.(*Buffer).removeView() pkg/buffer/buffer.go:36 +0x46 gvisor.dev/gvisor/pkg/buffer.(*Buffer).advanceRead() pkg/buffer/buffer.go:128 +0x8f gvisor.dev/gvisor/pkg/buffer.(*Buffer).TrimFront() pkg/buffer/buffer.go:83 +0xa9 gvisor.dev/gvisor/pkg/tcpip/stack.MergeFragment() pkg/tcpip/stack/packet_buffer.go:607 +0x96 gvisor.dev/gvisor/pkg/tcpip/network/internal/fragmentation.(*reassembler).process() pkg/tcpip/network/internal/fragmentation/reassembler.go:174 +0x11a4 gvisor.dev/gvisor/pkg/tcpip/network/internal/fragmentation.(*Fragmentation).Process() pkg/tcpip/network/internal/fragmentation/fragmentation.go:201 +0xb08 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processFragmentExtHdr() pkg/tcpip/network/ipv6/ipv6.go:1870 +0xb47 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeader() pkg/tcpip/network/ipv6/ipv6.go:1455 +0x848 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeaders() pkg/tcpip/network/ipv6/ipv6.go:1509 +0x484 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally() pkg/tcpip/network/ipv6/ipv6.go:1397 +0x198 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket() pkg/tcpip/network/ipv6/ipv6.go:1376 +0x4b7 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket() pkg/tcpip/network/ipv6/ipv6.go:1146 +0xcd4 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket() pkg/tcpip/stack/nic.go:769 +0x1ea gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket() pkg/tcpip/link/nested/nested.go:61 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*endpoint).DeliverNetworkPacket() pkg/tcpip/link/packetsocket/packetsocket.go:47 +0x5e gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound() pkg/tcpip/link/channel/channel.go:207 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write() pkg/tcpip/link/tun/device.go:250 +0x805 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write() pkg/sentry/devices/tundev/tundev.go:163 +0x591 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write() pkg/sentry/vfs/file_description.go:679 +0x144 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write() pkg/sentry/syscalls/linux/sys_read_write.go:347 +0xa4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write() pkg/sentry/syscalls/linux/sys_read_write.go:316 +0x38e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:143 +0xb9e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:323 +0x84 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:283 +0xc6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:258 +0x549 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:269 +0x2294 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:97 +0x41a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x44 Previous read at 0x00c0018b4148 by goroutine 5619: gvisor.dev/gvisor/pkg/buffer.(*ViewList).Front() bazel-out/k8-fastbuild/bin/pkg/buffer/view_list.go:52 +0x33 gvisor.dev/gvisor/pkg/buffer.(*Buffer).PullUp() pkg/buffer/buffer.go:313 +0x118 gvisor.dev/gvisor/pkg/tcpip/stack.(*PacketBuffer).headerView() pkg/tcpip/stack/packet_buffer.go:364 +0x184 gvisor.dev/gvisor/pkg/tcpip/stack.PacketHeader.Slice() pkg/tcpip/stack/packet_buffer.go:504 +0x58 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).processExtensionHeaders() pkg/tcpip/network/ipv6/ipv6.go:1508 +0x448 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).deliverPacketLocally() pkg/tcpip/network/ipv6/ipv6.go:1397 +0x198 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).handleValidatedPacket() pkg/tcpip/network/ipv6/ipv6.go:1376 +0x4b7 gvisor.dev/gvisor/pkg/tcpip/network/ipv6.(*endpoint).HandlePacket() pkg/tcpip/network/ipv6/ipv6.go:1146 +0xcd4 gvisor.dev/gvisor/pkg/tcpip/stack.(*nic).DeliverNetworkPacket() pkg/tcpip/stack/nic.go:769 +0x1ea gvisor.dev/gvisor/pkg/tcpip/link/nested.(*Endpoint).DeliverNetworkPacket() pkg/tcpip/link/nested/nested.go:61 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/packetsocket.(*endpoint).DeliverNetworkPacket() pkg/tcpip/link/packetsocket/packetsocket.go:47 +0x5e gvisor.dev/gvisor/pkg/tcpip/link/channel.(*Endpoint).InjectInbound() pkg/tcpip/link/channel/channel.go:207 +0xc1 gvisor.dev/gvisor/pkg/tcpip/link/tun.(*Device).Write() pkg/tcpip/link/tun/device.go:250 +0x805 gvisor.dev/gvisor/pkg/sentry/devices/tundev.(*tunFD).Write() pkg/sentry/devices/tundev/tundev.go:163 +0x591 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).Write() pkg/sentry/vfs/file_description.go:679 +0x144 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.write() pkg/sentry/syscalls/linux/sys_read_write.go:347 +0xa4 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Write() pkg/sentry/syscalls/linux/sys_read_write.go:316 +0x38e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall() pkg/sentry/kernel/task_syscall.go:143 +0xb9e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke() pkg/sentry/kernel/task_syscall.go:323 +0x84 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter() pkg/sentry/kernel/task_syscall.go:283 +0xc6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall() pkg/sentry/kernel/task_syscall.go:258 +0x549 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute() pkg/sentry/kernel/task_run.go:269 +0x2294 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run() pkg/sentry/kernel/task_run.go:97 +0x41a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x44