panic: expected socket to exist at '!N' in abstract socket namespace goroutine 260 [running]: panic({0x10d9d60?, 0xc000867550?}) GOROOT/src/runtime/panic.go:1017 +0x3ac fp=0xc0008cf408 sp=0xc0008cf358 pc=0x43a72c gvisor.dev/gvisor/pkg/sentry/inet.(*AbstractSocketNamespace).Remove(0xc00019ca38, {0xc0004a6541, 0x6b}, {0x15519e0?, 0xc00081e240}) pkg/sentry/inet/abstract_socket_namespace.go:141 +0x22a fp=0xc0008cf4e8 sp=0xc0008cf408 pc=0x94e1ca gvisor.dev/gvisor/pkg/sentry/socket/unix.(*Socket).DecRef.func1() pkg/sentry/socket/unix/unix.go:120 +0xb7 fp=0xc0008cf538 sp=0xc0008cf4e8 pc=0xaff377 gvisor.dev/gvisor/pkg/sentry/socket/unix.(*socketRefs).DecRef(0xc00064a5f8?, 0xc00064a5b0) bazel-out/k8-fastbuild/bin/pkg/sentry/socket/unix/socket_refs.go:132 +0x75 fp=0xc0008cf5a0 sp=0xc0008cf538 pc=0xafeaf5 gvisor.dev/gvisor/pkg/sentry/socket/unix.(*Socket).DecRef(0xc00081e240?, {0x155fab8?, 0xc0006d9500?}) pkg/sentry/socket/unix/unix.go:116 +0x6b fp=0xc0008cf5e0 sp=0xc0008cf5a0 pc=0xaff28b gvisor.dev/gvisor/pkg/sentry/socket/unix.(*Socket).Release(0xc0002474d0?, {0x155fab8?, 0xc0006d9500?}) pkg/sentry/socket/unix/unix.go:132 +0x27 fp=0xc0008cf608 sp=0xc0008cf5e0 pc=0xaff407 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef.func1() pkg/sentry/vfs/file_description.go:197 +0x305 fp=0xc0008cf6e8 sp=0xc0008cf608 pc=0x77e245 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescriptionRefs).DecRef(0x153e778?, 0xc00064a760) bazel-out/k8-fastbuild/bin/pkg/sentry/vfs/file_description_refs.go:132 +0x75 fp=0xc0008cf750 sp=0xc0008cf6e8 pc=0x7846d5 gvisor.dev/gvisor/pkg/sentry/vfs.(*FileDescription).DecRef(0x97b853?, {0x155fab8?, 0xc0006d9500?}) pkg/sentry/vfs/file_description.go:161 +0x55 fp=0xc0008cf790 sp=0xc0008cf750 pc=0x77def5 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).drop(0xc00057a100?, {0x155fab8, 0xc0006d9500}, 0xc00081e240) pkg/sentry/kernel/fd_table.go:137 +0x1c5 fp=0xc0008cf810 sp=0xc0008cf790 pc=0x97a405 gvisor.dev/gvisor/pkg/sentry/kernel.(*FDTable).NewFDAt(0xc0006d9500?, {0x155fab8, 0xc0006d9500}, 0xc?, 0x0?, {0x0?}) pkg/sentry/kernel/fd_table.go:321 +0x66 fp=0xc0008cf858 sp=0xc0008cf810 pc=0x97b606 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).NewFDAt(...) pkg/sentry/kernel/task.go:778 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.dup3(0xc0006d9500, 0x2?, 0x3, 0x0?) pkg/sentry/syscalls/linux/sys_file.go:572 +0x113 fp=0xc0008cf8e8 sp=0xc0008cf858 pc=0xb28793 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Dup3(0xc0006d9500?, 0x8?, {{0x4}, {0x3}, {0x0}, {0x0}, {0x7f8c7e8279c7}, {0x557f43b40338}}) pkg/sentry/syscalls/linux/sys_file.go:558 +0x7a fp=0xc0008cf910 sp=0xc0008cf8e8 pc=0xb2865a gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0006d9500, 0x124, {{0x4}, {0x3}, {0x0}, {0x0}, {0x7f8c7e8279c7}, {0x557f43b40338}}) pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc0008cfc50 sp=0xc0008cf910 pc=0x9cbf0b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0006d9500, 0xc00070a690?, {{0x4}, {0x3}, {0x0}, {0x0}, {0x7f8c7e8279c7}, {0x557f43b40338}}) pkg/sentry/kernel/task_syscall.go:322 +0x4e fp=0xc0008cfcb0 sp=0xc0008cfc50 pc=0x9cd50e gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x7f4a13a1dc60?, 0x7f4a9a9e8108?, {{0x4}, {0x3}, {0x0}, {0x0}, {0x7f8c7e8279c7}, {0x557f43b40338}}) pkg/sentry/kernel/task_syscall.go:282 +0x74 fp=0xc0008cfd10 sp=0xc0008cfcb0 pc=0x9cd0d4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000738820?) pkg/sentry/kernel/task_syscall.go:257 +0x3a8 fp=0xc0008cfe08 sp=0xc0008cfd10 pc=0x9ccdc8 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0001e1000?, 0xc0006d9500) pkg/sentry/kernel/task_run.go:269 +0x1405 fp=0xc0008cff48 sp=0xc0008cfe08 pc=0x9beec5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0006d9500, 0x9) pkg/sentry/kernel/task_run.go:98 +0x262 fp=0xc0008cffc0 sp=0xc0008cff48 pc=0x9bd3e2 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:391 +0x25 fp=0xc0008cffe0 sp=0xc0008cffc0 pc=0x9ca405 runtime.goexit() src/runtime/asm_amd64.s:1650 +0x1 fp=0xc0008cffe8 sp=0xc0008cffe0 pc=0x471241 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 72 pkg/sentry/kernel/task_start.go:391 +0xf8