panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x8d32f9] goroutine 522 [running]: panic({0x1040680, 0x1e6e780}) GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc000d17578 sp=0xc000d174b8 pc=0x435837 runtime.panicmem(...) GOROOT/src/runtime/panic.go:220 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc000d175c8 sp=0xc000d17578 pc=0x44c236 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0x140f6b0?) pkg/sentry/mm/lifecycle.go:246 +0x19 fp=0xc000d175d0 sp=0xc000d175c8 pc=0x8d32f9 gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc0005176a0) pkg/sentry/kernel/task_usermem.go:353 +0x8f fp=0xc000d175f0 sp=0xc000d175d0 pc=0xa2ff6f gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc0005176a0, 0x44d632?, {0xc000753e44, 0x10, 0x90}) pkg/sentry/kernel/task_usermem.go:361 +0x7d fp=0xc000d17690 sp=0xc000d175f0 pc=0xa3005d gvisor.dev/gvisor/pkg/sentry/kernel.makeIovec({0x1404e38?, 0xc0005176a0?}, 0xc000753500, 0xc000d17748?, {0xc000753e44, 0xc000d17768?, 0x90}) pkg/sentry/kernel/task_usermem.go:261 +0x50 fp=0xc000d176c8 sp=0xc000d17690 pc=0xa2f6f0 gvisor.dev/gvisor/pkg/sentry/kernel.copyInIovecs({0x1404e38, 0xc0005176a0}, 0xc000753500, 0x20000a00, 0x4) pkg/sentry/kernel/task_usermem.go:231 +0x286 fp=0xc000d17768 sp=0xc000d176c8 pc=0xa2f526 gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInIovecs(0xc0009423c0?, 0xc000d17818?, 0x8349ef?) pkg/sentry/kernel/task_usermem.go:387 +0x3a fp=0xc000d177a0 sp=0xc000d17768 pc=0xa3057a gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc000971500, 0xc000753500, 0x7f55cd3e5000?, 0x0?, 0xc000d178f4?, 0xc000d178f8?) pkg/sentry/syscalls/linux/vfs2/mmap.go:166 +0x190 fp=0xc000d17898 sp=0xc000d177a0 pc=0xcf2c70 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x0?, {{0x2d}, {0x20000700}, {0x3}, {0x20000a00}, {0x4}, {0x0}}, 0x1) pkg/sentry/syscalls/linux/vfs2/mmap.go:152 +0x1cf fp=0xc000d17908 sp=0xc000d17898 pc=0xcf29af gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMWritev(0x0?, {{0x2d}, {0x20000700}, {0x3}, {0x20000a00}, {0x4}, {0x0}}) pkg/sentry/syscalls/linux/vfs2/mmap.go:114 +0x45 fp=0xc000d17958 sp=0xc000d17908 pc=0xcf27a5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000971500, 0x137, {{0x2d}, {0x20000700}, {0x3}, {0x20000a00}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc000d17c98 sp=0xc000d17958 pc=0xa2b86b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000971500, 0x85?, {{0x2d}, {0x20000700}, {0x3}, {0x20000a00}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc000d17cf8 sp=0xc000d17c98 pc=0xa2ce54 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0x8bfd4f?, 0x0?, {{0x2d}, {0x20000700}, {0x3}, {0x20000a00}, {0x4}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc000d17d58 sp=0xc000d17cf8 pc=0xa2ca45 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000557e10?) pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc000d17e50 sp=0xc000d17d58 pc=0xa2c70c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0009e6b00?, 0xc000971500) pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc000d17f60 sp=0xc000d17e50 pc=0xa1e4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000971500, 0x2c) pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc000d17fc0 sp=0xc000d17f60 pc=0xa1cd0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc000d17fe0 sp=0xc000d17fc0 pc=0xa29d0a runtime.goexit() src/runtime/asm_amd64.s:1571 +0x1 fp=0xc000d17fe8 sp=0xc000d17fe0 pc=0x469321 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:370 +0x105