panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x0 pc=0xb3f0d0] goroutine 2070 gp=0xc004d3a380 m=3 mp=0xc0000cce08 [running]: panic({0x1770da0?, 0x2721140?}) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:804 +0x154 fp=0xc001e25490 sp=0xc001e253e0 pc=0x477f44 runtime.panicmem(...) bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/panic.go:262 runtime.sigpanic() bazel-out/aarch64-fastbuild/bin/external/io_bazel_rules_go/stdlib_/src/runtime/signal_unix.go:900 +0x300 fp=0xc001e254f0 sp=0xc001e25490 pc=0x47a7c0 gvisor.dev/gvisor/pkg/sentry/mm.vmaIterator.Start(...) bazel-out/aarch64-fastbuild/bin/pkg/sentry/mm/vma_set.go:1476 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).madviseMutateVMAs(0xc004d97008, 0x20bdc000, 0x86ac726dff2f4713, 0xc001e25658) pkg/sentry/mm/syscalls.go:1264 +0x210 fp=0xc001e25610 sp=0xc001e25500 pc=0xb3f0d0 gvisor.dev/gvisor/pkg/sentry/mm.(*MemoryManager).SetDontFork(...) pkg/sentry/mm/syscalls.go:1292 gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Madvise(0xc002dfd908, 0x0?, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}}) pkg/sentry/syscalls/linux/sys_mmap.go:186 +0x114 fp=0xc001e256a0 sp=0xc001e25610 pc=0xf6fef4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc002dfd908, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:143 +0x694 fp=0xc001e25950 sp=0xc001e256a0 pc=0xd67b64 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc002dfd908, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:323 +0x50 fp=0xc001e25a00 sp=0xc001e25950 pc=0xd69270 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc002dfd908, 0xe9, {{0x20bdc000}, {0x86ac726dff2f4713}, {0xa}, {0x0}, {0x0}, {0x0}}) pkg/sentry/kernel/task_syscall.go:283 +0x78 fp=0xc001e25a70 sp=0xc001e25a00 pc=0xd68d98 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc002dfd908) pkg/sentry/kernel/task_syscall.go:258 +0x3c0 fp=0xc001e25ba0 sp=0xc001e25a70 pc=0xd68a30 gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc002dfd908?, 0xc002dfd908) pkg/sentry/kernel/task_run.go:269 +0x15d4 fp=0xc001e25e50 sp=0xc001e25ba0 pc=0xd592d4 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc002dfd908, 0x1eb) pkg/sentry/kernel/task_run.go:97 +0x398 fp=0xc001e25fa0 sp=0xc001e25e50 pc=0xd574a8 gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1() pkg/sentry/kernel/task_start.go:400 +0x44 fp=0xc001e25fd0 sp=0xc001e25fa0 pc=0xd66024 runtime.goexit({}) src/runtime/asm_arm64.s:1223 +0x4 fp=0xc001e25fd0 sp=0xc001e25fd0 pc=0x4813a4 created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1549 pkg/sentry/kernel/task_start.go:400 +0x13c