Bug 12957
| Summary: | rpc.rusersd dumps core with signal 11 when receiving rusers command from HP-UX | ||
|---|---|---|---|
| Product: | Base System | Reporter: | Andre Albsmeier <Andre.Albsmeier> |
| Component: | bin | Assignee: | freebsd-bugs (Nobody) <bugs> |
| Status: | Closed FIXED | ||
| Severity: | Affects Only Me | ||
| Priority: | Normal | ||
| Version: | 3.2-STABLE | ||
| Hardware: | Any | ||
| OS: | Any | ||
This PR can be closed. I can't reproduce the problem anymore. -Andre State Changed From-To: open->closed Closed at submitter's request. |
On the HP machine we run the "rusers" command. We see some output of users being logged in at remote machines. After about 1 minute, rpc.rusersd on the FreeBSD machine crashes with signal 11. This has been observed on multiple FreeBSD machines. When "rusers" is being run on a FreeBSD machine, everything works. I don't know if the HP-UX rusers command does something wrong; however, the daemon should not crash under FreeBSD. Fix: Unknown. I can easily reproduce the problem, so if someone got fixes/patches I will try them out happily. Here is the gdb session I ran on the corefile: root@schlappy:/>gdb /usr/libexec/rpc.rusersd rpc.rusersd.core GNU gdb 4.18 Copyright 1998 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Type "show copying" to see the conditions. There is absolutely no warranty for GDB. Type "show warranty" for details. This GDB was configured as "i386-unknown-freebsd"... Core was generated by `rpc.rusersd'. Program terminated with signal 11, Segmentation fault. Reading symbols from /usr/lib/librpcsvc.so.2...done. Reading symbols from /usr/lib/libutil.so.2...done. Reading symbols from /usr/lib/libc.so.3...done. Reading symbols from /usr/libexec/ld-elf.so.1...done. #0 0x280cd97a in xdr_string () from /usr/lib/libc.so.3 (gdb) where #0 0x280cd97a in xdr_string () from /usr/lib/libc.so.3 #1 0x28067540 in xdr_utmp () from /usr/lib/librpcsvc.so.2 #2 0x2806758f in xdr_utmpidle () from /usr/lib/librpcsvc.so.2 #3 0x280b8036 in xdr_array () from /usr/lib/libc.so.3 #4 0x2806763c in xdr_utmpidlearr () from /usr/lib/librpcsvc.so.2 #5 0x280c93ba in xdr_accepted_reply () from /usr/lib/libc.so.3 #6 0x280cd91c in xdr_union () from /usr/lib/libc.so.3 #7 0x280c94d4 in xdr_replymsg () from /usr/lib/libc.so.3 #8 0x280ab636 in svcudp_create () from /usr/lib/libc.so.3 #9 0x280abf27 in svc_sendreply () from /usr/lib/libc.so.3 #10 0x80491bc in rusers_service (rqstp=0xbfbfdc98, transp=0x804e000) at /src/src-3/libexec/rpc.rusersd/rusers_proc.c:388 #11 0x280ac3aa in svc_getreqset2 () from /usr/lib/libc.so.3 #12 0x28089690 in svc_run () from /usr/lib/libc.so.3 #13 0x8048c45 in main (argc=1, argv=0xbfbfdd54) at /src/src-3/libexec/rpc.rusersd/rusersd.c:109 #14 0x8048a3d in _start () How-To-Repeat: Set up a 3.2-STABLE machine with rpc.rusersd enabled. Issue a "rusers" command on a HP-UX 10.20 machine which is attached to the same wire. Meanwhile, do a "tail -f /var/log/messages" on the FreeBSD machine and wait.