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IDProjectCategoryView StatusDate SubmittedLast Update
0001064Zandronum[All Projects] Bugpublic2012-09-26 02:312014-06-12 20:27
ReporterAlexMax 
Assigned To 
PrioritynormalSeverityminorReproducibilityunable to reproduce
StatusfeedbackResolutionopen 
PlatformLinuxOSUbuntuOS Version10.04 x86
Product Version1.0 
Target VersionFixed in Version 
Summary0001064: Denial of Service causes lockup instead of graceful crash.
DescriptionPretty much exactly what it says on the tin. One of my servers was hit with a program that seemed to rapidly have clients connect and disconnect from various IP addresses with random names, and this occurred until the program finally froze. I consider the program locking up a bug, since ideally it would at least crash gracefully so it could be automatically restarted.
Additional InformationHere is the strace output from the locked-up process:

gettimeofday({1348626188, 367165}, NULL) = 0
recvfrom(12, 0x8eebaa0, 131072, 0, 0xbfe4d298, 0xbfe4d2a8) = -1 EAGAIN (Resource
 temporarily unavailable)
nanosleep({0, 1000000}, NULL) = 0

These three system calls are repeated 10,000,000 times a second. Perhaps this might provide some insight into what is going on.
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-  Notes
User avatar (0004809)
AlexMax (developer)
2012-09-26 02:34

Disregard the initial symptoms. I can't actually confirm why the server went down, only that it did lock up and I got some strace output that might be useful.
User avatar (0009163)
Watermelon (developer)
2014-06-12 20:27

Is this still an issue?

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- Issue History
Date Modified Username Field Change
2012-09-26 02:31 AlexMax New Issue
2012-09-26 02:34 AlexMax Note Added: 0004809
2014-06-12 20:27 Watermelon Note Added: 0009163
2014-06-12 20:27 Watermelon Status new => feedback






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