panic: unknown error *tcpip.ErrMalformedHeader goroutine 17593 [running]: panic(0xfd3b80, 0xc001a209e0) GOROOT/src/runtime/panic.go:1064 +0x545 fp=0xc0006316a0 sp=0xc0006315d8 pc=0x437265 gvisor.dev/gvisor/pkg/syserr.TranslateNetstackError(0x131fca0, 0x1ae7d48, 0xc0009415e0) pkg/syserr/netstack.go:134 +0x88a fp=0xc0006316f8 sp=0xc0006316a0 pc=0x70164a gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*socketOpsCommon).SendMsg(0xc000119660, 0xc001352000, 0x132abe0, 0xc001d54000, 0x0, 0x1, 0x0, 0x0, 0x100, 0xc001b36840, ...) pkg/sentry/socket/netstack/netstack.go:2854 +0x545 fp=0xc000631868 sp=0xc0006316f8 pc=0xb2e965 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.sendTo(0xc001352000, 0x3, 0x0, 0x0, 0x0, 0x200012c0, 0xc000000010, 0x0, 0x0, 0x0) pkg/sentry/syscalls/linux/vfs2/socket.go:1113 +0x417 fp=0xc000631a98 sp=0xc000631868 pc=0xda3537 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.SendTo(0xc001352000, 0x3, 0x0, 0x0, 0x0, 0x200012c0, 0x10, 0x0, 0x0, 0x0, ...) pkg/sentry/syscalls/linux/vfs2/socket.go:1126 +0x71 fp=0xc000631af8 sp=0xc000631a98 pc=0xda3971 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001352000, 0x2c, 0x3, 0x0, 0x0, 0x0, 0x200012c0, 0x10, 0xddc677, 0x11b2520, ...) pkg/sentry/kernel/task_syscall.go:104 +0x13c fp=0xc000631c58 sp=0xc000631af8 pc=0x9d301c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001352000, 0x2c, 0x3, 0x0, 0x0, 0x0, 0x200012c0, 0x10, 0x200012c0, 0x10) pkg/sentry/kernel/task_syscall.go:239 +0x66 fp=0xc000631ce0 sp=0xc000631c58 pc=0x9d41e6 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001352000, 0x2c, 0x3, 0x0, 0x0, 0x0, 0x200012c0, 0x10, 0x0, 0x0) pkg/sentry/kernel/task_syscall.go:199 +0x98 fp=0xc000631d40 sp=0xc000631ce0 pc=0x9d3d98 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001352000, 0x2, 0xc001352000) pkg/sentry/kernel/task_syscall.go:174 +0x15c fp=0xc000631e10 sp=0xc000631d40 pc=0x9d373c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0x0, 0xc001352000, 0x1300b40, 0x0) pkg/sentry/kernel/task_run.go:282 +0xc45 fp=0xc000631f60 sp=0xc000631e10 pc=0x9c7b45 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001352000, 0x204) pkg/sentry/kernel/task_run.go:97 +0x1af fp=0xc000631fd0 sp=0xc000631f60 pc=0x9c680f runtime.goexit() src/runtime/asm_amd64.s:1374 +0x1 fp=0xc000631fd8 sp=0xc000631fd0 pc=0x4709a1 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:323 +0xfe