Potential race condition. Unable to use tsh: the given private and public keys do not form a valid keypair

[fungiboletus]

Expected behavior:
It should work.

Current behavior:
It crashes with the following error messages:

 tsh version --debug
[KEYSTORE]  ERRO the given private and public keys do not form a valid keypair client/keystore.go:310
[CLIENT]    DEBU the given private and public keys do not form a valid keypair client/api.go:1056
Failed to fetch proxy version: the given private and public keys do not form a valid keypair
Teleport v10.2.2 git: go1.19.1

tsh logout --debug 
ERRO [KEYSTORE]  the given private and public keys do not form a valid keypair client/keystore.go:310
DEBU [CLIENT]    the given private and public keys do not form a valid keypair client/api.go:1056

ERROR REPORT:
Original Error: *trace.CompareFailedError the given private and public keys do not form a valid keypair
Stack Trace:
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/api/utils/keys/privatekey.go:225 github.com/gravitational/teleport/api/utils/keys.ParseKeyPair
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/api/utils/keys/privatekey.go:209 github.com/gravitational/teleport/api/utils/keys.LoadKeyPair
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/lib/client/keystore.go:308 github.com/gravitational/teleport/lib/client.(*FSLocalKeyStore).GetKey
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/lib/client/api.go:945 github.com/gravitational/teleport/lib/client.ReadProfileStatus
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/lib/client/api.go:1054 github.com/gravitational/teleport/lib/client.Status
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/tool/tsh/tsh.go:1679 main.onLogout
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/tool/tsh/tsh.go:999 main.Run
	/private/tmp/teleport-20220916-10028-11awu4w/teleport-10.2.2/tool/tsh/tsh.go:444 main.main
	/opt/homebrew/Cellar/go/1.19.1/libexec/src/runtime/proc.go:250 runtime.main
	/opt/homebrew/Cellar/go/1.19.1/libexec/src/runtime/asm_arm64.s:1172 runtime.goexit
User Message: the given private and public keys do not form a valid keypair

Bug details:

• Teleport version 10.2.2
• Recreation steps ???
• Debug logs

Reseting the ~/.tsh folder fixes the issue. I tried to see the diff of a working ~/.tsh folder with the broken one and I cannot see anything obvious. The files do not seem to be heavily corrupted. It could be very bad luck with one bit corruption somewhere, but I think it's better to report the issue in case more people experience it.

I'm suspecting it is a race condition error. I start VSCode with my Kubernetes plugin, and teleport starts the teleport login flow in the browser 3 times in parallel. It works most of the time but perhaps the race condition happens when writing the public and private keys files.

[samrees]

This bug hits when you're using Lens, as it ends up launching one refresh per context programmatically. When there's a valid single sign-on session in the browser, they then complete in parallel as well.

[webvictim]

Should be fixed by #26102