panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0x8d32f9] goroutine 195908 [running]: panic({0x1040680, 0x1e6e780}) GOROOT/src/runtime/panic.go:941 +0x397 fp=0xc00a667578 sp=0xc00a6674b8 pc=0x435837 runtime.panicmem(...) GOROOT/src/runtime/panic.go:220 runtime.sigpanic() GOROOT/src/runtime/signal_unix.go:818 +0x336 fp=0xc00a6675c8 sp=0xc00a667578 pc=0x44c236 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).IncUsers(0x8cfde5?) pkg/sentry/mm/lifecycle.go:246 +0x19 fp=0xc00a6675d0 sp=0xc00a6675c8 pc=0x8d32f9 gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).getMemoryManager(0xc007f03420) pkg/sentry/kernel/task_usermem.go:353 +0x8f fp=0xc00a6675f0 sp=0xc00a6675d0 pc=0xa2ff6f gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInBytes(0xc007f03420, 0x44d632?, {0xc00319e944, 0x10, 0x90}) pkg/sentry/kernel/task_usermem.go:361 +0x7d fp=0xc00a667690 sp=0xc00a6675f0 pc=0xa3005d gvisor.dev/gvisor/pkg/sentry/kernel.makeIovec({0x1404e38?, 0xc007f03420?}, 0xc00319e000, 0xc00997e000?, {0xc00319e944, 0xc00a667768?, 0x90}) pkg/sentry/kernel/task_usermem.go:261 +0x50 fp=0xc00a6676c8 sp=0xc00a667690 pc=0xa2f6f0 gvisor.dev/gvisor/pkg/sentry/kernel.copyInIovecs({0x1404e38, 0xc007f03420}, 0xc00319e000, 0x20000440, 0x2) pkg/sentry/kernel/task_usermem.go:231 +0x286 fp=0xc00a667768 sp=0xc00a6676c8 pc=0xa2f526 gvisor.dev/gvisor/pkg/sentry/kernel.(*taskCopyContext).CopyInIovecs(0x0?, 0x0?, 0xa08040?) pkg/sentry/kernel/task_usermem.go:387 +0x3a fp=0xc00a6677a0 sp=0xc00a667768 pc=0xa3057a gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.doProcessVMReadWrite(0xc00319e000, 0xc004ebf500, 0xc00361b560?, 0x0?, 0xc00a667948?, 0xaabfe5?) pkg/sentry/syscalls/linux/vfs2/mmap.go:162 +0x153 fp=0xc00a667898 sp=0xc00a6677a0 pc=0xcf2c33 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.processVMRW(0x561be05dbf88?, {{0x168c}, {0x200002c0}, {0x2}, {0x20000440}, {0x2}, {0x0}}, 0x0) pkg/sentry/syscalls/linux/vfs2/mmap.go:155 +0x205 fp=0xc00a667908 sp=0xc00a667898 pc=0xcf29e5 gvisor.dev/gvisor/pkg/sentry/syscalls/linux/vfs2.ProcessVMReadv(0xc0074bea80?, {{0x168c}, {0x200002c0}, {0x2}, {0x20000440}, {0x2}, {0x0}}) pkg/sentry/syscalls/linux/vfs2/mmap.go:109 +0x45 fp=0xc00a667958 sp=0xc00a667908 pc=0xcf2725 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0074bea80, 0x136, {{0x168c}, {0x200002c0}, {0x2}, {0x20000440}, {0x2}, {0x0}}) pkg/sentry/kernel/task_syscall.go:142 +0x80b fp=0xc00a667c98 sp=0xc00a667958 pc=0xa2b86b gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0074bea80, 0xc00125c4e0?, {{0x168c}, {0x200002c0}, {0x2}, {0x20000440}, {0x2}, {0x0}}) pkg/sentry/kernel/task_syscall.go:322 +0x54 fp=0xc00a667cf8 sp=0xc00a667c98 pc=0xa2ce54 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc00038a040?, 0xc00a667e40?, {{0x168c}, {0x200002c0}, {0x2}, {0x20000440}, {0x2}, {0x0}}) pkg/sentry/kernel/task_syscall.go:282 +0x85 fp=0xc00a667d58 sp=0xc00a667cf8 pc=0xa2ca45 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0029a2bb0?) pkg/sentry/kernel/task_syscall.go:257 +0x3ac fp=0xc00a667e50 sp=0xc00a667d58 pc=0xa2c70c gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc006b87b80?, 0xc0074bea80) pkg/sentry/kernel/task_run.go:253 +0x1125 fp=0xc00a667f60 sp=0xc00a667e50 pc=0xa1e4c5 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0074bea80, 0x16c7) pkg/sentry/kernel/task_run.go:94 +0x1ec fp=0xc00a667fc0 sp=0xc00a667f60 pc=0xa1cd0c gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.func1() pkg/sentry/kernel/task_start.go:370 +0x2a fp=0xc00a667fe0 sp=0xc00a667fc0 pc=0xa29d0a runtime.goexit() src/runtime/asm_amd64.s:1571 +0x1 fp=0xc00a667fe8 sp=0xc00a667fe0 pc=0x469321 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start pkg/sentry/kernel/task_start.go:370 +0x105