Bug 55229
| Summary: | ypbind hangs if any hostname in /etc/yp.conf is unknown | ||
|---|---|---|---|
| Product: | [Retired] Red Hat Linux | Reporter: | Need Real Name <eric.hagberg> |
| Component: | ypbind | Assignee: | Alexander Larsson <alexl> |
| Status: | CLOSED DUPLICATE | QA Contact: | Ben Levenson <benl> |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | 7.1 | ||
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | i386 | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | 2002-03-19 15:46:57 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
From Bugzilla Helper: User-Agent: Mozilla/4.0 (compatible; MSIE 6.0b; Windows 98) Description of problem: If any of the hosts listed in the /etc/yp.conf file are not known, ypbind will hang. In our particular example, the yp.conf has many lines of the form "domain NISDOMAIN server HOSTNAME." In fact, if any of those "HOSTNAME" entries aren't found through dns lookups (gethostbyname), ypbind will hang. An "strace -o $file -f -s 256 ypbind" shows this at the end of the file, after waiting a _long_ time and then hitting Cntrl-C: 21041 write(4, "\2\0\0\0\4\0\0\0\16\0\0\0", 12) = 12 21041 write(4, "pisvm2.ms.com\0", 14) = 14 21041 read(4, "\2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\377\377\377\377\377\377\377 \377\ 0\0\0\0\1\0\0\0", 32) = 32 21041 close(4) = 0 21041 open("/usr/share/locale/en_US/LC_MESSAGES/ypbind-mt.mo", O_RDONLY) = -1 EN OENT (No such file or directory) 21041 open("/usr/share/locale/en/LC_MESSAGES/ypbind-mt.mo", O_RDONLY) = -1 ENOEN T (No such file or directory) 21041 brk(0x8056000) = 0x8056000 21041 time([1004212306]) = 1004212306 21041 open("/etc/localtime", O_RDONLY) = 4 21041 fstat64(4, {st_mode=S_IFREG|0644, st_size=817, ...}) = 0 21041 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, - 1, 0) = 0x40025000 21041 read(4, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\3\0\0 \0\0\ 0\0\0\224\0\0\0\3\0\0\0\f\236\246\36p\237\272\353`\240\206\0p\241\232 \315`\313\2 10\360p\322`\373\340\372\370X\360\373\350;\340\374\330:\360\375\310\35\340 \376\2 70\34\360\377\247\377\340\0\227\376\360\1\207\341\340\2w\340\360 \3p\376`\4`\375p \5P\340`\6@\337p\0070\302`\7\215\31p\t\20\244`\t\255\224\360\n\360 \206`\v\340\20 5p\f\331\242\340\r\300gp\16\271\204\340\17\251\203\360\20\231f\340\21 \211e\360\2 2yH\340\23iG\360\24Y*\340\25I)\360\026"..., 4096) = 817 21041 close(4) 21041 munmap(0x40025000, 4096) = 0 21041 rt_sigaction(SIGPIPE, {0x400318c0, [], 0x4000000}, {SIG_DFL}, 8) = 0 21041 socket(PF_UNIX, SOCK_DGRAM, 0) = 4 21041 fcntl64(0x4, 0x2, 0x1, 0x2) = 0 21041 connect(4, {sin_family=AF_UNIX, path="/dev/log"}, 16) = 0 21041 send(4, "<11>Oct 27 15:51:46 ypbind: Unknown host: pisvm2.ms.com", 55, 0) = 55 21041 rt_sigaction(SIGPIPE, {SIG_DFL}, NULL, 8) = 0 21041 rt_sigprocmask(SIG_SETMASK, NULL, [32], 8) = 0 21041 rt_sigsuspend([] <unfinished ...> 21041 --- SIGINT (Interrupt) --- 21041 +++ killed by SIGINT +++ Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. take a working yp.conf file and replace a known with an unknown host 2. stop ypbind 3. start ypbind Actual Results: ypbind hangs Expected Results: ypbind should discard hosts that are not known and use as many valid hosts as it can find, up to the maximum as defined in the source code. Additional info: