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authorJakub Hrozek <jhrozek@redhat.com>2012-09-12 19:23:48 +0200
committerJakub Hrozek <jhrozek@redhat.com>2012-09-13 16:51:38 +0200
commitd25e7c659361ebd794ef011dc9305543f266e8c4 (patch)
tree7203927b13d500ce1b41c12db712625bfe6f5f15 /po
parent3c79852d5d5ba4111c0535bafea43450dba8ed12 (diff)
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FO: Check server validity before setting status
The list of resolved servers is allocated on the back end context and kept in the fo_service structure. However, a single request often resolves a server and keeps a pointer until the end of a request and only then gives feedback about the server based on the request result. This presents a big race condition in case the SRV resolution is used. When there are requests coming in in parallel, it is possible that an incoming request will invalidate a server until another request that holds a pointer to the original server is able to give a feedback. This patch simply checks if a server is in the list of servers maintained by a service before reading its status. https://fedorahosted.org/sssd/ticket/1364
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