panic: WARNING: circular locking detected: kernel.fsContextMutex -> kernfs.filesystemRWMutex:
	goroutine 28921 [running]:
	gvisor.dev/gvisor/pkg/sync/locking.(*ancestorsAtomicPtrMap).RangeRepeatable(0xc0002fd100, 0xc0015df8e0)
		bazel-out/k8-fastbuild/bin/pkg/sync/locking/atomicptrmap_ancestors_unsafe.go:440 +0x1e8
	gvisor.dev/gvisor/pkg/sync/locking.checkLock(0xc000200fc0, 0xc0002fd0e0, {0x0, 0x0, 0x0})
		pkg/sync/locking/lockdep.go:112 +0x48a
	gvisor.dev/gvisor/pkg/sync/locking.AddGLock(0xc000200fc0, 0xffffffffffffffff)
		pkg/sync/locking/lockdep.go:144 +0x2ec
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*filesystemRWMutex).Lock(0xc000e876d0)
		bazel-out/k8-fastbuild/bin/pkg/sentry/fsimpl/kernfs/filesystem_mutex.go:31 +0x3c
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Dentry).DecRef(0xc0038945a0, {0x2113050, 0xc0024bd208})
		pkg/sentry/fsimpl/kernfs/kernfs.go:303 +0xaf
	gvisor.dev/gvisor/pkg/sentry/vfs.(*Dentry).DecRef(...)
		pkg/sentry/vfs/dentry.go:156
	gvisor.dev/gvisor/pkg/sentry/vfs.VirtualDentry.DecRef({0xc001061b80?, 0xc0038945a0?}, {0x2113050, 0xc0024bd208})
		pkg/sentry/vfs/vfs.go:1114 +0x6b
	gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).destroy(0xc003586580, {0x2113050, 0xc0024bd208})
		pkg/sentry/kernel/fs_context.go:73 +0x153
	gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute.(*FSContext).DecRef.func2()
		pkg/sentry/kernel/fs_context.go:87 +0x47
	gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContextRefs).DecRef(0xc003586580, 0xc0015dfda0)
		bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_refs.go:133 +0x6d
	gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).DecRef(...)
		pkg/sentry/kernel/fs_context.go:86
	gvisor.dev/gvisor/pkg/sentry/kernel.(*runExitMain).execute(0xc0024bd208?, 0xc0024bd208)
		pkg/sentry/kernel/task_exit.go:301 +0x82b
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0024bd208, 0x2127)
		pkg/sentry/kernel/task_run.go:97 +0x4ca
	created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 28919
		pkg/sentry/kernel/task_start.go:416 +0x15c
	
	known lock chain: kernfs.filesystemRWMutex -> kernel.taskMutex -> kernel.fsContextMutex
	
	====== kernfs.filesystemRWMutex -> kernel.taskMutex =====
	goroutine 244 [running]:
	gvisor.dev/gvisor/pkg/sentry/kernel.(*taskMutex).Lock(0xc0002e89a0)
		bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/task_mutex.go:35 +0x3c
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).GetNetworkNamespace(0xc0002e8008)
		pkg/sentry/kernel/task_net.go:48 +0x3c
	gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskNetDir(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc0002e8008)
		pkg/sentry/fsimpl/proc/task_net.go:47 +0x2d3
	gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*filesystem).newTaskInode(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc0002e8008, 0xc00042e2a0, 0x1, 0x0)
		pkg/sentry/fsimpl/proc/task.go:77 +0x15a5
	gvisor.dev/gvisor/pkg/sentry/fsimpl/proc.(*tasksInode).Lookup(0xc000652c08, {0x2113050, 0xc0002e8008}, {0x1ed2dd3, 0x1})
		pkg/sentry/fsimpl/proc/tasks.go:147 +0x4aa
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).revalidateChildLocked(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc0000049e0, 0xc000692000, {0x1ed2dd3, 0x1})
		pkg/sentry/fsimpl/kernfs/filesystem.go:127 +0x358
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).stepExistingLocked(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc000254d88, 0xc000692000)
		pkg/sentry/fsimpl/kernfs/filesystem.go:74 +0x33c
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).walkExistingLocked(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc000254d88)
		pkg/sentry/fsimpl/kernfs/filesystem.go:197 +0xc5
	gvisor.dev/gvisor/pkg/sentry/fsimpl/kernfs.(*Filesystem).ReadlinkAt(0xc0001fc600, {0x2113050, 0xc0002e8008}, 0xc000254d88)
		pkg/sentry/fsimpl/kernfs/filesystem.go:696 +0x136
	gvisor.dev/gvisor/pkg/sentry/vfs.(*VirtualFilesystem).ReadlinkAt(0xc0000049e0, {0x2113050, 0xc0002e8008}, 0xc000680180, 0xc0007e3588)
		pkg/sentry/vfs/vfs.go:512 +0xed
	gvisor.dev/gvisor/pkg/sentry/syscalls/linux.readlinkat(0xc0002e8008, 0xffffff9c, 0xc0000b8070, 0xc0000cad00, 0x80)
		pkg/sentry/syscalls/linux/sys_file.go:1096 +0x26c
	gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Readlinkat(0xc0002e8008, 0xc00063a090?, {{0xffffffffffffff9c}, {0xc0000b8070}, {0xc0000cad00}, {0x80}, {0x0}, {0x0}})
		pkg/sentry/syscalls/linux/sys_file.go:1067 +0x46
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc0002e8008, 0x10b, {{0xffffffffffffff9c}, {0xc0000b8070}, {0xc0000cad00}, {0x80}, {0x0}, {0x0}})
		pkg/sentry/kernel/task_syscall.go:143 +0x94c
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc0002e8008, 0x10b, {{0xffffffffffffff9c}, {0xc0000b8070}, {0xc0000cad00}, {0x80}, {0x0}, {0x0}})
		pkg/sentry/kernel/task_syscall.go:323 +0x72
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc0002e8008, 0x10b, {{0xffffffffffffff9c}, {0xc0000b8070}, {0xc0000cad00}, {0x80}, {0x0}, {0x0}})
		pkg/sentry/kernel/task_syscall.go:283 +0x94
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc0002e8008)
		pkg/sentry/kernel/task_syscall.go:258 +0x490
	gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc0002e8008?, 0xc0002e8008)
		pkg/sentry/kernel/task_run.go:269 +0x1ec9
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc0002e8008, 0x1)
		pkg/sentry/kernel/task_run.go:97 +0x4ca
	created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 1
		pkg/sentry/kernel/task_start.go:416 +0x15c
	
	====== kernel.taskMutex -> kernel.fsContextMutex =====
	goroutine 284 [running]:
	gvisor.dev/gvisor/pkg/sentry/kernel.(*fsContextMutex).Lock(0xc00066e108)
		bazel-out/k8-fastbuild/bin/pkg/sentry/kernel/fs_context_mutex.go:33 +0x3c
	gvisor.dev/gvisor/pkg/sentry/kernel.(*FSContext).Fork(0xc00066e100)
		pkg/sentry/kernel/fs_context.go:95 +0x53
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Unshare(0xc000464588, 0x20000)
		pkg/sentry/kernel/task_clone.go:706 +0x12d2
	gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Unshare(0xc000464588, 0xc00063b270?, {{0x20000}, {0x7}, {0x7f5eae862af0}, {0x0}, {0x0}, {0x563ce0ce66c0}})
		pkg/sentry/syscalls/linux/sys_thread.go:453 +0x4f
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc000464588, 0x110, {{0x20000}, {0x7}, {0x7f5eae862af0}, {0x0}, {0x0}, {0x563ce0ce66c0}})
		pkg/sentry/kernel/task_syscall.go:143 +0x94c
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc000464588, 0x110, {{0x20000}, {0x7}, {0x7f5eae862af0}, {0x0}, {0x0}, {0x563ce0ce66c0}})
		pkg/sentry/kernel/task_syscall.go:323 +0x72
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc000464588, 0x110, {{0x20000}, {0x7}, {0x7f5eae862af0}, {0x0}, {0x0}, {0x563ce0ce66c0}})
		pkg/sentry/kernel/task_syscall.go:283 +0x94
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc000464588)
		pkg/sentry/kernel/task_syscall.go:258 +0x490
	gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc000464588?, 0xc000464588)
		pkg/sentry/kernel/task_run.go:269 +0x1ec9
	gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc000464588, 0x10)
		pkg/sentry/kernel/task_run.go:97 +0x4ca
	created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 295
		pkg/sentry/kernel/task_start.go:416 +0x15c