l...@gnu.org (Ludovic Courtès) skribis: > George myglc2 Clemmer <myg...@gmail.com> skribis: > >> g1@g1 /root/con/30$ ssh e3a.local ; date >> ssh: Could not resolve hostname e3a.local: Name or service not known
Perhaps “ssh -6 e3a.local” works? >> g1@g1 /root/con/30$ cat /var/log/messages | tail >> Feb 8 13:06:00 localhost dhclient: DHCPDISCOVER on enp4s0 to >> 255.255.255.255 port 67 interval 5 >> Feb 8 13:06:05 localhost dhclient: No DHCPOFFERS received. >> Feb 8 13:06:05 localhost dhclient: No working leases in persistent database >> - sleeping. >> Feb 8 13:06:23 localhost vmunix: [52360.780268] nscd[23423]: segfault at 0 >> ip 00007fb14a3c1606 sp 00007fb1446d82d8 error 4 in >> libc-2.25.so[7fb14a341000+196000] > > ‘nss-mdns’ was upgraded two weeks ago from 0.10 to 0.11. I can > reproduce the crash with 0.11 on x86_64. Stack trace below. It may be that “gethostbyname4_r” in nss-mdns returns an entry with a NULL name. “getent hosts something.local” works, so the getaddrinfo part of nss-mdns works correctly, I think. Ludo’. --8<---------------cut here---------------start------------->8--- Core was generated by `/gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd -f /gnu/store/'. Program terminated with signal SIGSEGV, Segmentation fault. #0 strlen () at ../sysdeps/x86_64/strlen.S:106 106 ../sysdeps/x86_64/strlen.S: Dosiero aŭ dosierujo ne ekzistas. [Current thread is 1 (Thread 0x7fee65a4b700 (LWP 32659))] (gdb) bt #0 strlen () at ../sysdeps/x86_64/strlen.S:106 #1 0x000055a0e3263883 in addhstaiX (db=db@entry=0x55a0e3472340 <dbs+704>, fd=fd@entry=13, req=req@entry=0x7fee65a4a8c0, key=key@entry=0x7fee65a4ab10, uid=uid@entry=4294967295, he=he@entry=0x0, dh=0x0) at aicache.c:174 #2 0x000055a0e326432e in addhstai (db=db@entry=0x55a0e3472340 <dbs+704>, fd=fd@entry=13, req=req@entry=0x7fee65a4a8c0, key=key@entry=0x7fee65a4ab10, uid=uid@entry=4294967295) at aicache.c:571 #3 0x000055a0e325857a in handle_request (uid=4294967295, pid=<optimized out>, key=0x7fee65a4ab10, req=0x7fee65a4a8c0, fd=13) at connections.c:1275 #4 nscd_run_worker (p=<optimized out>) at connections.c:1762 #5 0x00007fee6b66e454 in start_thread (arg=0x7fee65a4b700) at pthread_create.c:456 #6 0x00007fee6b1987cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 (gdb) bt full #0 strlen () at ../sysdeps/x86_64/strlen.S:106 No locals. #1 0x000055a0e3263883 in addhstaiX (db=db@entry=0x55a0e3472340 <dbs+704>, fd=fd@entry=13, req=req@entry=0x7fee65a4a8c0, key=key@entry=0x7fee65a4ab10, uid=uid@entry=4294967295, he=he@entry=0x0, dh=0x0) at aicache.c:174 atmem = {next = 0x55a0e3472800 <readylist_lock>, name = 0x0, family = 1801920929, addr = {32750, 0, 2, 1801929696}, scopeid = 32750} at = 0x7fee65a4a7e0 addrs = <optimized out> family = <optimized out> status = {-1, -1} naddrs = 2 canon = 0x0 canonlen = <optimized out> cp = <optimized out> addrslen = 0 fct4 = <optimized out> dataset = 0x0 hosts_database = 0x55a0e42025d0 nip = 0x55a0e4202610 no_more = 0 rc6 = 0 rc4 = 0 herrno = 0 old_res_options = 705 tmpbuf6len = 1024 tmpbuf6 = 0x7fee65a4a2e0 "pluto.local" tmpbuf4len = <optimized out> tmpbuf4 = <optimized out> ttl = 2147483647 total = 0 key_copy = 0x0 alloca_used = false timeout = 9223372036854775807 __PRETTY_FUNCTION__ = "addhstaiX" #2 0x000055a0e326432e in addhstai (db=db@entry=0x55a0e3472340 <dbs+704>, fd=fd@entry=13, req=req@entry=0x7fee65a4a8c0, key=key@entry=0x7fee65a4ab10, uid=uid@entry=4294967295) at aicache.c:571 No locals. #3 0x000055a0e325857a in handle_request (uid=4294967295, pid=<optimized out>, key=0x7fee65a4ab10, req=0x7fee65a4a8c0, fd=13) at connections.c:1275 db = 0x55a0e3472340 <dbs+704> #4 nscd_run_worker (p=<optimized out>) at connections.c:1762 keybuf = "pluto.local", '\000' <repeats 1013 times> fd = 13 pid = <optimized out> it = <optimized out> req = {version = 2, type = GETAI, key_len = 12} uid = 4294967295 buf = '\000' <repeats 255 times> #5 0x00007fee6b66e454 in start_thread (arg=0x7fee65a4b700) at pthread_create.c:456 __res = <optimized out> pd = 0x7fee65a4b700 now = <optimized out> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140661884237568, -461186331514265124, 140724270282382, 140724270282383, 0, 140661884237568, 451840114903196124, 451872565911724508}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}} not_first_call = <optimized out> pagesize_m1 = <optimized out> sp = <optimized out> freesize = <optimized out> __PRETTY_FUNCTION__ = "start_thread" #6 0x00007fee6b1987cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97 No locals. --8<---------------cut here---------------end--------------->8--- Valgrind output: --8<---------------cut here---------------start------------->8--- ==532== Thread 4: ==532== Conditional jump or move depends on uninitialised value(s) ==532== at 0x11B865: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== ==532== Conditional jump or move depends on uninitialised value(s) ==532== at 0x11B859: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== ==532== Use of uninitialised value of size 8 ==532== at 0x11B85B: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== ==532== Use of uninitialised value of size 8 ==532== at 0x11B848: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== ==532== Use of uninitialised value of size 8 ==532== at 0x4C2D932: strlen (in /gnu/store/4zm43sqyiffcmpkyv7j9lmxxsby6c9mk-valgrind-3.13.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==532== by 0x11B882: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== ==532== Invalid read of size 1 ==532== at 0x4C2D932: strlen (in /gnu/store/4zm43sqyiffcmpkyv7j9lmxxsby6c9mk-valgrind-3.13.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==532== by 0x11B882: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) ==532== Address 0x0 is not stack'd, malloc'd or (recently) free'd ==532== ==532== ==532== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==532== Access not within mapped region at address 0x0 ==532== at 0x4C2D932: strlen (in /gnu/store/4zm43sqyiffcmpkyv7j9lmxxsby6c9mk-valgrind-3.13.0/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==532== by 0x11B882: addhstaiX (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x11C32D: addhstai (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x110579: nscd_run_worker (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/sbin/nscd) ==532== by 0x4E3D453: start_thread (in /gnu/store/3h31zsqxjjg52da5gp3qmhkh4x8klhah-glibc-2.25/lib/libpthread-2.25.so) --8<---------------cut here---------------end--------------->8---