TIPC can return a misleading POLLOUT indication to poll() or select(), indicating that a socket which is in a transmit congested state can be written to without blocking.
The TIPC project team typically releases patches for problems only if the fix has not yet been incorporated into a later release of TIPC. The team usually advises TIPC users to upgrade their systems to the latest release of TIPC, rather than trying to fix individuals issues, so that they may benefit from all of the fixes and improvements that have been developed for TIPC.
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This problem has been fixed in TIPC 1.7.6-rc2.
why don't have patch to this problem?
The TIPC project team typically releases patches for problems only if the fix has not yet been incorporated into a later release of TIPC. The team usually advises TIPC users to upgrade their systems to the latest release of TIPC, rather than trying to fix individuals issues, so that they may benefit from all of the fixes and improvements that have been developed for TIPC.