[Bug 51049] Sea of Thieves crash when entering a lobby

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=51049

--- Comment #3 from Hans Leidekker <hans at meelstraat.net> ---
(In reply to Alistair Leslie-Hughes from comment #2)
> Created attachment 69916 [details]
> +secur32 log without staging fix
> 
> AS you can see in the log 
> 0x00007f8f765227b0 schan_InitializeSecurityContextW+0x560
> [Z:\home\alesliehughes\source\wine-alesliehughes\dlls\secur32\schannel.c:
> 926] in secur32: cmpq        $d,0x0000000000000070(%rax)
> 926             else if (!is_dtls_context(ctx)) return
> SEC_E_INCOMPLETE_MESSAGE;
> 
> This is the point of failure since in this case ctx is NULL. (The handle has
> been freed).
> 
> Limiting the log to thread 05e4, shows that the InitializeSecurityContextW
> is called multiple times with the same handle, including after a
> DeleteSecurityContext.

It deletes the context after the second call to InitializeSecurityContext,
which correctly fails because a NULL input buffer is passed. It then calls
InitializeSecurityContext a third time with the freed context, which might be
the result of poor error handling.

So the question is why a NULL input buffer is passed in the second call. It
should hold the response from the server to the token produced with the first
call.

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