panic: Incrementing non-positive count 0xc0012bcae8 on nsfs.Inode

goroutine 651 gp=0xc001424a80 m=7 mp=0xc000580008 [running]:
panic({0x240f680?, 0xc001289f20?})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/go/src/runtime/panic.go:802 +0x168 fp=0xc000c9d2c0 sp=0xc000c9d210 pc=0x4bc328
gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs.(*inodeRefs).IncRef(0xc0012bcae8)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/fsimpl/nsfs/inode_refs.go:82 +0x23d fp=0xc000c9d350 sp=0xc000c9d2c0 pc=0x103d75d
gvisor.dev/gvisor/pkg/sentry/kernel.(*PIDNamespace).IncRef(...)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/threads.go:258
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).GetPIDNamespace(...)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/threads.go:577
gvisor.dev/gvisor/pkg/sentry/kernel.(*namespaceSet).initFromTask(0xc000c9d480, 0xc001416008, 0xc0015d4c88, 0x20000000)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_clone.go:532 +0x24b fp=0xc000c9d3d8 sp=0xc000c9d350 pc=0x13c086b
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Setns(0xc001416008, 0xc001355900, 0x20000000)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_clone.go:612 +0x60c fp=0xc000c9d5d0 sp=0xc000c9d3d8 pc=0x13c1aec
gvisor.dev/gvisor/pkg/sentry/syscalls/linux.Setns(0xc001416008, 0xffffffff?, {{0x4}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/syscalls/linux/sys_thread.go:479 +0x29f fp=0xc000c9d690 sp=0xc000c9d5d0 pc=0x1830f5f
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).executeSyscall(0xc001416008, 0x134, {{0x4}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_syscall.go:143 +0xff1 fp=0xc000c9d940 sp=0xc000c9d690 pc=0x140b731
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallInvoke(0xc001416008, 0x134, {{0x4}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_syscall.go:323 +0xc5 fp=0xc000c9d9e8 sp=0xc000c9d940 pc=0x140e665
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscallEnter(0xc001416008, 0x134, {{0x4}, {0x20000000}, {0x0}, {0x0}, {0x0}, {0x0}})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_syscall.go:283 +0x107 fp=0xc000c9da58 sp=0xc000c9d9e8 pc=0x140db27
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).doSyscall(0xc001416008)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_syscall.go:258 +0x907 fp=0xc000c9db80 sp=0xc000c9da58 pc=0x140d407
gvisor.dev/gvisor/pkg/sentry/kernel.(*runApp).execute(0xc001416008?, 0xc001416008)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_run.go:258 +0x30ec fp=0xc000c9de68 sp=0xc000c9db80 pc=0x13effac
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).run(0xc001416008, 0x58)
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_run.go:89 +0x6e7 fp=0xc000c9dfb0 sp=0xc000c9de68 pc=0x13ec587
gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start.gowrap1()
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x45 fp=0xc000c9dfe0 sp=0xc000c9dfb0 pc=0x1408545
runtime.goexit({})
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/go/src/runtime/asm_amd64.s:1693 +0x1 fp=0xc000c9dfe8 sp=0xc000c9dfe0 pc=0x4c5b81
created by gvisor.dev/gvisor/pkg/sentry/kernel.(*Task).Start in goroutine 524
	/syzkaller/.cache/bazel/_bazel_root/3cda29e0ad466371615d977190968f26/sandbox/linux-sandbox/9/execroot/_main/gopath/src/gvisor.dev/gvisor/pkg/sentry/kernel/task_start.go:416 +0x1be