View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0004469 | unreal | ircd | public | 2015-11-25 15:11 | 2015-12-09 17:46 |
| Reporter | syzop | Assigned To | syzop | ||
| Priority | normal | Severity | block | Reproducibility | have not tried |
| Status | resolved | Resolution | fixed | ||
| Product Version | 4.0.0-rc3 | ||||
| Fixed in Version | 4.0.0-rc5 | ||||
| Summary | 0004469: Flood: Cannot accept connections: Operation not supported | ||||
| Description | 09:45 - reporter- has anyone else ever received 'Cannot accept connections :Operation not supported 09:45 - reporter- on 4? 09:54 -Syzop[AWAY]- no. but that isn't good :D 09:59 - reporter- Syzop[AWAY]: could it be something to do with blacklist module? 10:00 - reporter- I only log 'errors', and ircd.log is just errors about blacklist and errors that I posted above 'Cannot accept connections' .. 10:01 - reporter- but that notice was flooding, literally 1000's a minute :P 10:01 -Syzop[AWAY]- ic. was? not anymore? 10:24 - reporter- I restarted 10:56 - reporter- Syzop[AWAY]: should i put something on the bug tracker or not ? 10:56 - reporter- all i have is that 1 log file tho 10:58 - reporter- [Mon Nov 23 09:56:59 2015] - Blacklist Requests for x.x.x.x canceled () 10:58 - reporter- lots of these too 10:58 - reporter- are these 'errors'? .. 09:50 -reporter- jeeees, just seen my usage on that 1 server 09:50 -reporter- 100000x cpu past 4 hrs compared to usual | ||||
| Additional Information | (guess -rc3 but not sure) | ||||
| Tags | No tags attached. | ||||
| 3rd party modules | |||||
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This is caused by an accept() failure. I don't think accept() can return "Operation not supported" on a listener TCP socket. If that assumption is true then it means it is (no longer) a TCP listener socket.. perhaps the socket has been closed & overwritten by some other socket somehow (eg: closing wrong fd somewhere). The blacklist module does nothing with FD's. It does use c-ares extensively though, which does open & close FD's. |
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I've been hammering my server with clones (about 300-500 clones per second), with a few of them on a local blacklist. Disconnecting, connecting, constantly. No issues. (Tried also both with and without identd-check and with cached and uncached IP's) |
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Not resolved, but a workaround has been added: [unreal40 f6a58b6] Added workaround for "Cannot accept connections: Operation not supported" problem (0004469). https://github.com/unrealircd/unrealircd/commit/f6a58b60af9220fa23e7361328f99c7902e2fc06 UnrealIRCd will now close the listener and re-create it. (This assumes the problem is at an UnrealIRCd level) |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2015-11-25 15:11 | syzop | New Issue | |
| 2015-11-25 15:15 | syzop | Description Updated | |
| 2015-11-25 15:15 | syzop | Additional Information Updated | |
| 2015-11-25 15:19 | syzop | Note Added: 0018880 | |
| 2015-11-25 15:26 | syzop | Note Added: 0018881 | |
| 2015-12-09 17:43 | syzop | Description Updated | |
| 2015-12-09 17:46 | syzop | Note Added: 0018905 | |
| 2015-12-09 17:46 | syzop | Status | new => resolved |
| 2015-12-09 17:46 | syzop | Fixed in Version | => 4.0.0-rc5 |
| 2015-12-09 17:46 | syzop | Resolution | open => fixed |
| 2015-12-09 17:46 | syzop | Assigned To | => syzop |
