syzbot

panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x2d8 pc=0xa4f7c7]

goroutine 261 gp=0xc00002d6c0 m=16 mp=0xc000305008 [running]:
panic({0x10decc0?, 0x1f35130?})
	GOROOT/src/runtime/panic.go:779 +0x158 fp=0xc000523680 sp=0xc0005235d0 pc=0x43cb78
runtime.panicmem(...)
	GOROOT/src/runtime/panic.go:261
runtime.sigpanic()
	GOROOT/src/runtime/signal_unix.go:881 +0x378 fp=0xc0005236e0 sp=0xc000523680 pc=0x456578
gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*endpoint).OnCorkOptionSet(0xc00022a308, 0x40?)
	pkg/tcpip/transport/tcp/endpoint.go:1766 +0x67 fp=0xc000523720 sp=0xc0005236e0 pc=0xa4f7c7
gvisor.dev/gvisor/pkg/tcpip.(*SocketOptions).SetCorkOption(0x1509b28?, 0xc0?)
	pkg/tcpip/socketops.go:474 +0x24 fp=0xc000523740 sp=0xc000523720 pc=0x65abe4
gvisor.dev/gvisor/pkg/sentry/socket/netstack.setSockOptTCP(0x7fbbcfebdce0?, {0x1509b28?, 0xc00067c3c0?}, {0x7fbbcfebdce0, 0xc00022a308}, 0x3, {0xc00067f3bc, 0x4, 0xc000727008?})
	pkg/sentry/socket/netstack/netstack.go:2015 +0x135 fp=0xc000523780 sp=0xc000523740 pc=0xac9635
gvisor.dev/gvisor/pkg/sentry/socket/netstack.SetSockOpt(0x835400?, {0x1509b28?, 0xc00067c3c0?}, {0x7fbbcfebdce0?, 0xc00022a308?}, 0xc00067ea88?, 0xc000523870?, {0xc00067f3bc, 0x4, 0x90})
	pkg/sentry/socket/netstack/netstack.go:1765 +0xbc fp=0xc0005237d8 sp=0xc000523780 pc=0xac8a3c
gvisor.dev/gvisor/pkg/sentry/socket/netstack.(*sock).SetSockOpt(0xc00067c3c0, 0xc00067ea88?, 0x6?, 0x3?, {0xc00067f3bc, 0x4?, 0x90?})
	pkg/sentry/socket/netstack/netstack.go:611 +0x235 fp=0xc000523880 sp=0xc0005237d8 pc=0xac33d5
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.SetSockOpt(0xc00067ea88, 0x0?, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x7f71d4a28e78}})
	pkg/sentry/syscalls/linux/sys_socket.go:551 +0x266 fp=0xc000523960 sp=0xc000523880 pc=0xb4daa6
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc00067ea88, 0x36, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x7f71d4a28e78}})
	pkg/sentry/kernel/task_syscall.go:143 +0x673 fp=0xc000523ca0 sp=0xc000523960 pc=0x9c4b73
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc00067ea88, 0x36, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x7f71d4a28e78}})
	pkg/sentry/kernel/task_syscall.go:323 +0x45 fp=0xc000523cf8 sp=0xc000523ca0 pc=0x9c5ce5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00067ea88, 0x36, {{0x3}, {0x6}, {0x3}, {0x200000c0}, {0x4}, {0x7f71d4a28e78}})
	pkg/sentry/kernel/task_syscall.go:283 +0x65 fp=0xc000523d48 sp=0xc000523cf8 pc=0x9c59e5
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc00062f520?)
	pkg/sentry/kernel/task_syscall.go:258 +0x2a5 fp=0xc000523e30 sp=0xc000523d48 pc=0x9c5765
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0004385a0?, 0xc00067ea88)
	pkg/sentry/kernel/task_run.go:263 +0xef7 fp=0xc000523f48 sp=0xc000523e30 pc=0x9b9c57
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc00067ea88, 0x7)
	pkg/sentry/kernel/task_run.go:98 +0x1e2 fp=0xc000523fc0 sp=0xc000523f48 pc=0x9b86e2
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	pkg/sentry/kernel/task_start.go:390 +0x25 fp=0xc000523fe0 sp=0xc000523fc0 pc=0x9c3465
runtime.goexit({})
	src/runtime/asm_amd64.s:1695 +0x1 fp=0xc000523fe8 sp=0xc000523fe0 pc=0x478c41
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 275
	pkg/sentry/kernel/task_start.go:390 +0xe5