* bug#30396: nscd segfaults on attempt to ssh to .local host
@ 2018-02-08 18:17 George myglc2 Clemmer
2018-02-08 20:00 ` Ricardo Wurmus
2018-02-08 22:30 ` Ludovic Courtès
0 siblings, 2 replies; 12+ messages in thread
From: George myglc2 Clemmer @ 2018-02-08 18:17 UTC (permalink / raw)
To: 30396
[-- Attachment #1: Type: text/plain, Size: 3164 bytes --]
nscd segfaults on attempt to ssh to .local host ...
g1@g1 /root/con/30$ ssh e3a.local ; date
ssh: Could not resolve hostname e3a.local: Name or service not known
Thu Feb 8 13:06:23 EST 2018
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]
Feb 8 13:06:24 localhost nscd: 23430 monitoring file `/etc/hosts` (1)
Feb 8 13:06:24 localhost nscd: 23430 monitoring directory `/etc` (2)
Feb 8 13:06:24 localhost nscd: 23430 monitoring file `/etc/resolv.conf` (3)
Feb 8 13:06:24 localhost nscd: 23430 monitoring directory `/etc` (2)
Feb 8 13:06:24 localhost nscd: 23430 monitoring file `/etc/services` (4)
Feb 8 13:06:24 localhost nscd: 23430 monitoring directory `/etc` (2)
g1@g1 /root/con/30$ avahi-browse -p -a | grep e3a
+;enp3s0;IPv6;C5200n\032\064\032e3a;_printer._tcp;local
+;enp3s0;IPv4;C5200n\032\064\032e3a;_printer._tcp;local
+;enp3s0;IPv6;C5200n\032\064\032e3a;_ipps._tcp;local
+;enp3s0;IPv4;C5200n\032\064\032e3a;_ipps._tcp;local
+;enp3s0;IPv6;C5200n\032\064\032e3a;_ipp._tcp;local
+;enp3s0;IPv4;C5200n\032\064\032e3a;_ipp._tcp;local
+;enp3s0;IPv6;e3a\032\091d0\05850\05899\0585b\058d7\0587b\093;_workstation._tcp;local
+;enp3s0;IPv4;e3a\032\091d0\05850\05899\0585b\058d7\0587b\093;_workstation._tcp;local
C-c C-cGot SIGINT, quitting.
... and when attempting to connect to self ...
g1@g1 /root/con/30$ ssh g1.local ; date
ssh: Could not resolve hostname g1.local: Name or service not known
Thu Feb 8 13:06:57 EST 2018
g1@g1 /root/con/30$ cat /var/log/messages | tail
Feb 8 13:06:24 localhost nscd: 23430 monitoring directory `/etc` (2)
Feb 8 13:06:24 localhost nscd: 23430 monitoring file `/etc/services` (4)
Feb 8 13:06:24 localhost nscd: 23430 monitoring directory `/etc` (2)
Feb 8 13:06:57 localhost vmunix: [52394.019906] nscd[23436]: segfault at 0 ip 00007fd7569b6606 sp 00007fd750ece2d8 error 4 in libc-2.25.so[7fd756936000+196000]
Feb 8 13:06:58 localhost nscd: 23445 monitoring file `/etc/hosts` (1)
Feb 8 13:06:58 localhost nscd: 23445 monitoring directory `/etc` (2)
Feb 8 13:06:58 localhost nscd: 23445 monitoring file `/etc/resolv.conf` (3)
Feb 8 13:06:58 localhost nscd: 23445 monitoring directory `/etc` (2)
Feb 8 13:06:58 localhost nscd: 23445 monitoring file `/etc/services` (4)
Feb 8 13:06:58 localhost nscd: 23445 monitoring directory `/etc` (2)
g1@g1 /root/con/30$ avahi-browse -p -a | grep g1
+;enp3s0;IPv6;g1\032\091d0\05850\05899\0585b\058d7\05855\093;_workstation._tcp;local
+;enp3s0;IPv4;g1\032\091d0\05850\05899\0585b\058d7\05855\093;_workstation._tcp;local
+;enp3s0;IPv6;g1;_sftp-ssh._tcp;local
+;enp3s0;IPv4;g1;_sftp-ssh._tcp;local
+;enp3s0;IPv6;g1;_ssh._tcp;local
+;enp3s0;IPv4;g1;_ssh._tcp;local
g1@g1 ~/src/guix$ guix --version
guix (GNU Guix) 0.14.0.1427-26ecb
TIA - George
system config:
[-- Attachment #2: sys.scm --]
[-- Type: application/octet-stream, Size: 2412 bytes --]
;;; GuixSD headless server
(use-modules (gnu) (gnu system nss))
(use-service-modules
networking ssh
avahi ; avahi-service avahi (avahi-browse) nss-mdns
dbus ; dbus
virtualization ;libvirt-service-type
)
(use-package-modules
admin
base ; glibc-utf8-locales
certs
cups
disk
emacs
freeipmi
linux ; mdadm
virtualization ; qemu virt-manager
rsync
screen
ssh
version-control
wget
xorg ; xauth
)
(operating-system
(host-name "g1")
(timezone "America/New_York")
(locale "en_US.utf8")
(kernel-arguments '("console=ttyS1,115200"))
;; RAID1 root using 1 NVMe SSD + 2 HDs
(bootloader (grub-configuration (target "/dev/nvme0n1")
(terminal-outputs '(console))
(terminal-inputs '(serial console))
(serial-speed 115200)
))
(initrd (lambda (file-systems . rest) (apply base-initrd file-systems
#:extra-modules '("raid1")
rest)))
(mapped-devices (list (mapped-device
(source '("/dev/nvme0n1p1" "/dev/sda1" "/dev/sdb1"))
(target "/dev/md3")
(type raid-device-mapping))))
(file-systems (cons (file-system
(title 'device)
(device "/dev/md3")
(mount-point "/")
(type "ext4")
(dependencies mapped-devices))
%base-file-systems))
(swap-devices '("/dev/nvme0n1p2" ))
(users (cons* (user-account (name "g1")
(group "users")
(supplementary-groups '("wheel" "kvm" "libvirt"))
(home-directory (string-append "/home/" name)))
%base-user-accounts))
(packages (cons*
nss-certs
cups
emacs-no-x-toolkit
emacs-guix
emacs-zenburn-theme
freeipmi
git
glibc-utf8-locales
gnu-make
mdadm
magit
openssh
parted
qemu
rsync
screen
smartmontools
tree
virt-manager
wget
xauth
%base-packages))
(name-service-switch %mdns-host-lookup-nss)
(services (cons* (avahi-service)
(dbus-service)
(dhcp-client-service) ;needed for multicast
(ntp-service)
(service openssh-service-type (openssh-configuration
(x11-forwarding? #t)))
(agetty-service (agetty-configuration (tty "ttyS1")
(baud-rate "115200")))
(service libvirt-service-type ; virt-manager
(libvirt-configuration
(unix-sock-group "libvirt")
(tls-port "16555")))
%base-services)))
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 18:17 bug#30396: nscd segfaults on attempt to ssh to .local host George myglc2 Clemmer
@ 2018-02-08 20:00 ` Ricardo Wurmus
2018-02-08 22:30 ` Ludovic Courtès
1 sibling, 0 replies; 12+ messages in thread
From: Ricardo Wurmus @ 2018-02-08 20:00 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
Hi George,
> nscd segfaults on attempt to ssh to .local host ...
is this on GuixSD or on a foreign distro?
--
Ricardo
GPG: BCA6 89B6 3655 3801 C3C6 2150 197A 5888 235F ACAC
https://elephly.net
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 18:17 bug#30396: nscd segfaults on attempt to ssh to .local host George myglc2 Clemmer
2018-02-08 20:00 ` Ricardo Wurmus
@ 2018-02-08 22:30 ` Ludovic Courtès
2018-02-08 22:59 ` Ludovic Courtès
2018-02-08 23:22 ` George myglc2 Clemmer
1 sibling, 2 replies; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-08 22:30 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
Hi,
George myglc2 Clemmer <myglc2@gmail.com> skribis:
> g1@g1 /root/con/30$ ssh e3a.local ; date
> ssh: Could not resolve hostname e3a.local: Name or service not known
> Thu Feb 8 13:06:23 EST 2018
>
> 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.
What does this print:
guix gc -R $(readlink -f /run/current-system) | grep nss-mdns
?
Thanks,
Ludo’.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 22:30 ` Ludovic Courtès
@ 2018-02-08 22:59 ` Ludovic Courtès
2018-02-09 10:36 ` Ludovic Courtès
2018-02-09 14:18 ` Ludovic Courtès
2018-02-08 23:22 ` George myglc2 Clemmer
1 sibling, 2 replies; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-08 22:59 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
ludo@gnu.org (Ludovic Courtès) skribis:
> George myglc2 Clemmer <myglc2@gmail.com> skribis:
>
>> g1@g1 /root/con/30$ 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---
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 22:30 ` Ludovic Courtès
2018-02-08 22:59 ` Ludovic Courtès
@ 2018-02-08 23:22 ` George myglc2 Clemmer
1 sibling, 0 replies; 12+ messages in thread
From: George myglc2 Clemmer @ 2018-02-08 23:22 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: 30396
Hello,
On 02/08/2018 at 22:30 Ludovic Courtès writes:
> Hi,
>
> George myglc2 Clemmer <myglc2@gmail.com> skribis:
>
>> g1@g1 /root/con/30$ ssh e3a.local ; date
>> ssh: Could not resolve hostname e3a.local: Name or service not known
>> Thu Feb 8 13:06:23 EST 2018
>>
>> 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.
>
> What does this print:
>
> guix gc -R $(readlink -f /run/current-system) | grep nss-mdns
g1@g1 ~$ guix gc -R $(readlink -f /run/current-system) | grep nss-mdns
/gnu/store/ms17fp783xqngzad0b38q97q73f9kaii-nss-mdns-0.11
> Perhaps “ssh -6 e3a.local” works?
Nope ...
g1@g1 ~$ ssh -6 e3a.local ; date
ssh: Could not resolve hostname e3a.local: Name or service not known
Thu Feb 8 18:18:31 EST 2018
g1@g1 ~$ cat /var/log/messages | tail
Feb 8 18:18:19 localhost nscd: 580 monitoring directory `/etc` (2)
Feb 8 18:18:19 localhost nscd: 580 monitoring file `/etc/services` (4)
Feb 8 18:18:19 localhost nscd: 580 monitoring directory `/etc` (2)
Feb 8 18:18:31 localhost vmunix: [71087.823297] nscd[587]: segfault at 0 ip 00007f71cfc43606 sp 00007f71c9f5a2d8 error 4 in libc-2.25.so[7f71cfbc3000+196000]
Feb 8 18:18:32 localhost nscd: 591 monitoring file `/etc/hosts` (1)
Feb 8 18:18:32 localhost nscd: 591 monitoring directory `/etc` (2)
Feb 8 18:18:32 localhost nscd: 591 monitoring file `/etc/resolv.conf` (3)
Feb 8 18:18:32 localhost nscd: 591 monitoring directory `/etc` (2)
Feb 8 18:18:32 localhost nscd: 591 monitoring file `/etc/services` (4)
Feb 8 18:18:32 localhost nscd: 591 monitoring directory `/etc` (2)
Thanks - George
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 22:59 ` Ludovic Courtès
@ 2018-02-09 10:36 ` Ludovic Courtès
2018-02-09 14:18 ` Ludovic Courtès
1 sibling, 0 replies; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-09 10:36 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
I’ve forwarded it upstream:
https://github.com/lathiat/nss-mdns/issues/26
Ludo’.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-08 22:59 ` Ludovic Courtès
2018-02-09 10:36 ` Ludovic Courtès
@ 2018-02-09 14:18 ` Ludovic Courtès
2018-02-09 17:29 ` George myglc2 Clemmer
2018-02-09 19:53 ` George myglc2 Clemmer
1 sibling, 2 replies; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-09 14:18 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
Hi,
For now I’ve pushed a workaround in
a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29, which basically downgrades to
0.10 until upstream comes up with a fix.
Ludo’.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-09 14:18 ` Ludovic Courtès
@ 2018-02-09 17:29 ` George myglc2 Clemmer
2018-02-09 19:53 ` George myglc2 Clemmer
1 sibling, 0 replies; 12+ messages in thread
From: George myglc2 Clemmer @ 2018-02-09 17:29 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: 30396
On 02/09/2018 at 14:18 Ludovic Courtès writes:
> For now I’ve pushed a workaround in
> a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29, which basically downgrades to
> 0.10 until upstream comes up with a fix.
OK, I knew it needed to go upstream but I also thought it must have
worked at some point. Thank you for the workaround ;-) - George
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-09 14:18 ` Ludovic Courtès
2018-02-09 17:29 ` George myglc2 Clemmer
@ 2018-02-09 19:53 ` George myglc2 Clemmer
2018-02-09 21:56 ` Ludovic Courtès
1 sibling, 1 reply; 12+ messages in thread
From: George myglc2 Clemmer @ 2018-02-09 19:53 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: 30396
On 02/09/2018 at 14:18 Ludovic Courtès writes:
> For now I’ve pushed a workaround in
> a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29, which basically downgrades to
> 0.10 until upstream comes up with a fix.
FWIW, nss-mdns-0.10 segfaults also ...
g1@g1 ~$ ssh g1.local ; date
ssh: Could not resolve hostname g1.local: Name or service not known
Fri Feb 9 14:52:20 EST 2018
g1@g1 ~$ tail /var/log/messages
Feb 9 14:51:51 localhost nscd: 17817 monitoring directory `/etc` (2)
Feb 9 14:52:20 localhost vmunix: [ 5922.252421] nscd[17823]: segfault at 0 ip 00007f85c0287606 sp 00007f85ba79f2d8 error 4 in libc-2.25.so[7f85c0207000+196000]
Feb 9 14:52:21 localhost nscd: 17829 monitoring file `/etc/hosts` (1)
g1@g1 ~$ avahi-browse -p -a | grep g1
+;enp3s0;IPv6;g1;_ssh._tcp;local
+;enp3s0;IPv4;g1;_ssh._tcp;local
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-09 19:53 ` George myglc2 Clemmer
@ 2018-02-09 21:56 ` Ludovic Courtès
2018-02-10 15:36 ` myglc2
0 siblings, 1 reply; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-09 21:56 UTC (permalink / raw)
To: George myglc2 Clemmer; +Cc: 30396
George myglc2 Clemmer <myglc2@gmail.com> skribis:
> On 02/09/2018 at 14:18 Ludovic Courtès writes:
>
>> For now I’ve pushed a workaround in
>> a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29, which basically downgrades to
>> 0.10 until upstream comes up with a fix.
>
> FWIW, nss-mdns-0.10 segfaults also ...
Are you sure you reconfigured to after this commit and rebooted or
otherwise had the nscd service upgraded? You can double- or
triple-check, it’s never too much. :-)
If after that you’re sure it’s still crashing, can you try (as root):
herd stop nscd
mv /var/cache/nscd/hosts{,.bak}
herd start nscd
Does it make a difference?
Thanks,
Ludo’.
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-09 21:56 ` Ludovic Courtès
@ 2018-02-10 15:36 ` myglc2
2018-02-15 9:38 ` Ludovic Courtès
0 siblings, 1 reply; 12+ messages in thread
From: myglc2 @ 2018-02-10 15:36 UTC (permalink / raw)
To: Ludovic Courtès; +Cc: 30396
On 02/09/2018 at 22:56 Ludovic Courtès writes:
> George myglc2 Clemmer <myglc2@gmail.com> skribis:
>
>> On 02/09/2018 at 14:18 Ludovic Courtès writes:
>>
>>> For now I’ve pushed a workaround in
>>> a68fdfea96370c8a4b95af1fcd6e2fd7eb72da29, which basically downgrades to
>>> 0.10 until upstream comes up with a fix.
>>
>> FWIW, nss-mdns-0.10 segfaults also ...
ARGH!... my mistake, I was looking at ...
g1@g1 ~$ guix gc -R $(readlink -f /run/current-system) | grep nss-mdns
/gnu/store/mvjz94idlcralc0bmqvrbrxx89w0narf-nss-mdns-0.10
... bug I had not rebooted/restarted herd. Many thanks - George
^ permalink raw reply [flat|nested] 12+ messages in thread
* bug#30396: nscd segfaults on attempt to ssh to .local host
2018-02-10 15:36 ` myglc2
@ 2018-02-15 9:38 ` Ludovic Courtès
0 siblings, 0 replies; 12+ messages in thread
From: Ludovic Courtès @ 2018-02-15 9:38 UTC (permalink / raw)
To: myglc2; +Cc: 30396-done
Hi,
It’s definitely fixed with the upgrade to nss-mdns 0.12:
https://git.savannah.gnu.org/cgit/guix.git/commit/?id=9859b5c190b43a2d53f03f1ac71bad20c74b632b
Ludo’.
^ permalink raw reply [flat|nested] 12+ messages in thread
end of thread, other threads:[~2018-02-15 9:39 UTC | newest]
Thread overview: 12+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-02-08 18:17 bug#30396: nscd segfaults on attempt to ssh to .local host George myglc2 Clemmer
2018-02-08 20:00 ` Ricardo Wurmus
2018-02-08 22:30 ` Ludovic Courtès
2018-02-08 22:59 ` Ludovic Courtès
2018-02-09 10:36 ` Ludovic Courtès
2018-02-09 14:18 ` Ludovic Courtès
2018-02-09 17:29 ` George myglc2 Clemmer
2018-02-09 19:53 ` George myglc2 Clemmer
2018-02-09 21:56 ` Ludovic Courtès
2018-02-10 15:36 ` myglc2
2018-02-15 9:38 ` Ludovic Courtès
2018-02-08 23:22 ` George myglc2 Clemmer
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