Description:
The current version of the daemon crashes regularly and leaves all containers in a kind of zombie state (i.e. not running, cannot be removed or killed).
In the logs I see this trace:

Dec 15 12:05:21 Hyperion dockerd[15337]: fatal error: concurrent map writes
Dec 15 12:05:21 Hyperion dockerd[15337]: goroutine 10056 [running]:
Dec 15 12:05:21 Hyperion dockerd[15337]: runtime.throw(0x5635474d5bb4, 0x15)
Dec 15 12:05:21 Hyperion dockerd[15337]: /usr/lib/go/src/runtime/panic.go:605 +0x97 fp=0xc422211820 sp=0xc422211800 pc=0x5635461005f7
Dec 15 12:05:21 Hyperion dockerd[15337]: runtime.mapassign_fast64(0x563547c54ac0, 0xc42069edb0, 0x6dc4, 0x40)
Dec 15 12:05:21 Hyperion dockerd[15337]: /usr/lib/go/src/runtime/hashmap_fast.go:519 +0x3d4 fp=0xc422211880 sp=0xc422211820 pc=0x5635460e10e4
Dec 15 12:05:21 Hyperion dockerd[15337]: github.com/docker/docker/daemon/exec.(*Store).SetPidUnlocked(...)
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/exec/exec.go:126
Dec 15 12:05:21 Hyperion dockerd[15337]: github.com/docker/docker/daemon.(*Daemon).registerExecPidUnlocked(0xc4203ec600, 0xc42054c900, 0xc421956a80)
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/exec.go:39 +0x1fd fp=0xc422211910 sp=0xc422211880 pc=0x5635473f12cd
Dec 15 12:05:21 Hyperion dockerd[15337]: github.com/docker/docker/daemon.(*Daemon).ContainerExecStart(0xc4203ec600, 0x7ff8bf246440, 0xc422061920, 0xc421456400, 0x40, 0x0, 0x0, 0x563548979880, 0xc4202fe600, 0x563548979880, ...)
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/exec.go:256 +0xa2d fp=0xc422211d60 sp=0xc422211910 pc=0x5635473f2bed
Dec 15 12:05:21 Hyperion dockerd[15337]: github.com/docker/docker/daemon.(*cmdProbe).run(0xc42110af89, 0x7ff8bf246440, 0xc422061920, 0xc4203ec600, 0xc42054c900, 0x1, 0x1, 0x0)
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/health.go:94 +0x582 fp=0xc422211ea8 sp=0xc422211d60 pc=0x5635473f5b52
Dec 15 12:05:21 Hyperion dockerd[15337]: github.com/docker/docker/daemon.monitor.func1(0x563548979800, 0xc42110af89, 0x7ff8bf246440, 0xc422061920, 0xc4203ec600, 0xc42054c900, 0xc422061980, 0xbe8508fc5915bfe4, 0x48245ec956, 0x5635489f7440)
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/health.go:198 +0xb2 fp=0xc422211f90 sp=0xc422211ea8 pc=0x56354743eb52
Dec 15 12:05:21 Hyperion dockerd[15337]: runtime.goexit()
Dec 15 12:05:21 Hyperion dockerd[15337]: /usr/lib/go/src/runtime/asm_amd64.s:2337 +0x1 fp=0xc422211f98 sp=0xc422211f90 pc=0x563546131ec1
Dec 15 12:05:21 Hyperion dockerd[15337]: created by github.com/docker/docker/daemon.monitor
Dec 15 12:05:21 Hyperion dockerd[15337]: /build/docker/src/src/github.com/docker/docker/daemon/health.go:196 +0x338
... and a ton more ...

This seems to be related to (or the same as): https://github.com/moby/moby/issues/35588


Steps to reproduce:
Not sure ... probably start enough containers. It happens to me after about 5 mins when I have about 20 running containers