Fix interrupted scans #832
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Fix SC-177 On some cases, the parallel scan is disabled and, the max_running_processes variable is set to 1, while the current number of running process is grether than 1. Therefore, condition in the while loop are not satisfied and never wait for free slot. At the end, the process table is full, and this produced the host scan process to stop, because not free slot for a new process.
This allows to handle the the error in a different way as for fork() issues (-1).
Because ERR_CANT_FORK should be used when there are resource issues, and when the system is not being able to fork a new processes. ERR_NO_FREE_SLOT is an internal error of the host scan process, which could be in most cases a temporal issue. We don't stop the host scan process. We just try again until the process table has a free slot.
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Improve messages and docstrings. Set warning log level instead of debug log level for plugin_launch error messages.
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Fix interrupted scans (backport #832)
jjnicola
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Aug 9, 2021
Fix interrupted scans (backport #832)
jjnicola
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Aug 9, 2021
Fix interrupted scans (backport #832)
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SC-177
What:
Check if the max running process was reached or even exceed, when waiting for running a new plugin.
Why:
Fix an issue which produced interrupted scan, because a host not being scan 100%
How:
Not easy to reproduce. It depends on the system, scan config and mainly on the target system (some plugins must be trigger in a especial order). Good luck.
Checklist: