View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0004419 | unreal | ircd | public | 2015-09-18 18:25 | 2015-10-26 10:27 |
| Reporter | syzop | Assigned To | syzop | ||
| Priority | normal | Severity | block | Reproducibility | have not tried |
| Status | resolved | Resolution | fixed | ||
| Product Version | 3.4-beta4 | ||||
| Target Version | 4.0.0-rc1 | Fixed in Version | 4.0.0-rc2 | ||
| Summary | 0004419: epoll error & REHASH never succeeds - remote includes bug? | ||||
| Description | 1) boot 2) add new listen block 3) /REHASH. All is good. 4) Then /REHASH again [Fri Sep 18 18:19:58 2015] - [BUG?] epoll returned error 2 (No such file or directory) And... rehash never succeeds subsequent /REHASH says "A rehash is already in progress" | ||||
| Tags | No tags attached. | ||||
| 3rd party modules | |||||
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This issue has something to do with remote includes. In my tests it's writing some data and then closing fd #14, causing the epoll error. This fd #14 is the listener, so shouldn't be closed. Fd #14 was previously used to retrieve a remote include (via HTTPS), and then to copy a file. Seems the curl code to finish the remote include thing is called too late and doing some unnecessary closing. write(14, "\25\3\3\0\32\206\303`\346:\255b.)\356\314HnRx\317,\304o\0260`\320\373;X", 31) = 31 close(14) = 0 open("/home/syzop/unrealircd/cache/f7579c5cba0233f2d308651ca6822254", O_WRONLY|O_CREAT, 0600) = 14 write(14, "help test {\n\t\"ok seems it succee"..., 110) = 110 close(14) = 0 socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 14 setsockopt(14, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 setsockopt(14, SOL_SOCKET, SO_RCVBUF, [8192], 4) = 0 setsockopt(14, SOL_SOCKET, SO_SNDBUF, [8192], 4) = 0 fcntl(14, F_GETFL) = 0x2 (flags O_RDWR) fcntl(14, F_SETFL, O_RDWR|O_NONBLOCK) = 0 bind(14, {sa_family=AF_INET, sin_port=htons(5123), sin_addr=inet_addr("0.0.0.0")}, 16) = 0 listen(14, 128) = 0 epoll_ctl(8, EPOLL_CTL_ADD, 14, {EPOLLIN, {u32=8659008, u64=8659008}}) = 0 poll([{fd=14, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}], 1, 0) = 0 (Timeout) write(14, "\27\3\3\0\224\235&N2\353\321\314\23\370\22\314\36*\200\230\0351\243\3076\247\327\24\6\346\346\201"..., 153) = -1 EPIPE (Broken pipe) [MARK] close(14) = 0 [MARK] ..etc... The last two lines with MARK are wrong. Fd was closed long before and re-used for 2 other purposes already... |
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Workaround for libcurl bug. Fixes 0004419. This caused an un-/REHASH'able server if you used remote includes (epoll_ctl error) and were adding new listen blocks at runtime, for example. https://github.com/unrealircd/unrealircd/commit/243045a887e0b755d028de138848610e36646ee5 See also related case from another libcurl user: http://curl.haxx.se/mail/tracker-2014-04/0038.html (be sure to read entire thread) |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2015-09-18 18:25 | syzop | New Issue | |
| 2015-09-18 18:25 | syzop | Assigned To | => syzop |
| 2015-09-18 18:25 | syzop | Status | new => confirmed |
| 2015-10-10 15:28 | syzop | Note Added: 0018739 | |
| 2015-10-17 14:37 | syzop | Severity | major => block |
| 2015-10-17 14:37 | syzop | Summary | epoll error & REHASH never succeeds => epoll error & REHASH never succeeds - remote includes bug? |
| 2015-10-26 10:26 | syzop | Note Added: 0018788 | |
| 2015-10-26 10:26 | syzop | Status | confirmed => resolved |
| 2015-10-26 10:26 | syzop | Fixed in Version | => 4.0.0-rc2 |
| 2015-10-26 10:26 | syzop | Resolution | open => fixed |
