Duplicate SMB file_ids leading to Windows client cache poisoning

Steven Engelhardt steven.engelhardt at relativity.com
Wed Dec 8 19:17:33 UTC 2021

>>> While trying to roll out recent versions of Samba, we believe we have discovered a bug in Samba related to SMB file id generation which can lead to Windows SMB clients to observe wrong data.
>> Could you share any test code/scripts you have for this so we can ensure we have a good regression test for this when we fix it ?
> Attached a few files, hope they get through.

Oops, I forgot one... here is statres, which we use to estimate the resolution of the system's stat(2) timestamps.

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