Commits on Feb 22, 2024

1. btf: fix race due to concurrent read access …

   Up until the introduction of lazy copying, reading from a Spec
   concurrently was safe. Now a read may trigger a copy and a write
   into the Spec, therefore causing a race on mutableTypes.
   
   Fix this by introducing a mutex which protects access to the
   mutable state. We need to be a bit careful here: copying in
   mutableTypes.add happens piecemeal, so we need to take a lock
   for the whole duration of modifyGraph.
   
   Signed-off-by: Lorenz Bauer <lmb@isovalent.com>

   

   lmb committed Feb 22, 2024
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