Package: nfs-common
Version: 1:1.3.4-6
Severity: important
X-Debbugs-Cc: foufo...@gmail.com
Dear Maintainer,
I run a kerberized nfs setup, from time to time rpc.gssd gets killed by
an ABRT signal (stacktrace bellow).
I has been a problem for a couple years now, but lately for some reason
it has become very very recurent (once a month or 2 to 2-3 times a week).
A double free is the root cause,I guess it stems from a race condition.
Upstream seem to have fixed with at lease those 3 commits (82e75b12c
07e4e94bf ed83085ff), which does not seem to have been backported to 1.3.x
-- Package-specific info:
-- rpcinfo --
program vers proto port service
100000 4 tcp 111 portmapper
100000 3 tcp 111 portmapper
100000 2 tcp 111 portmapper
100000 4 udp 111 portmapper
100000 3 udp 111 portmapper
100000 2 udp 111 portmapper
100007 3 udp 739 ypbind
100007 2 udp 739 ypbind
100007 1 udp 739 ypbind
100007 3 tcp 739 ypbind
100007 2 tcp 739 ypbind
100007 1 tcp 739 ypbind
-- /etc/default/nfs-common --
NEED_STATD=
STATDOPTS=
NEED_IDMAPD=
NEED_GSSD=
-- /etc/idmapd.conf --
[General]
Verbosity = 0
Pipefs-Directory = /run/rpc_pipefs
Domain=ads.iro.umontreal.ca
[Mapping]
Nobody-User = nobody
Nobody-Group = nogroup
-- /etc/fstab --
-- System Information:
Debian Release: 11.6
APT prefers stable-updates
APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500,
'stable-debug'), (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-20-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_CA.UTF-8, LC_CTYPE=en_CA.UTF-8 (charmap=UTF-8),
LANGUAGE=en_CA:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages nfs-common depends on:
ii adduser 3.118
ii keyutils 1.6.1-2
ii libc6 2.31-13+deb11u5
ii libcap2 1:2.44-1
ii libcom-err2 1.46.2-2
ii libdevmapper1.02.1 2:1.02.175-2.1
ii libevent-2.1-7 2.1.12-stable-1
ii libgssapi-krb5-2 1.18.3-6+deb11u3
ii libkeyutils1 1.6.1-2
ii libkrb5-3 1.18.3-6+deb11u3
ii libmount1 2.36.1-8+deb11u1
ii libnfsidmap2 0.25-6
ii libtirpc3 1.3.1-1+deb11u1
ii libwrap0 7.6.q-31
ii lsb-base 11.1.0
ii rpcbind 1.2.5-9
ii ucf 3.0043
Versions of packages nfs-common recommends:
ii python3 3.9.2-3
Versions of packages nfs-common suggests:
pn open-iscsi <none>
pn watchdog <none>
-- Configuration Files:
/etc/default/nfs-common changed [not included]
-- no debconf information
*** stacktrace
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 0x00007f27669ae537 in __GI_abort () at abort.c:79
#2 0x00007f2766a07768 in __libc_message (action=action@entry=do_abort,
fmt=fmt@entry=0x7f2766b253a5 "%s\n")
at ../sysdeps/posix/libc_fatal.c:155
#3 0x00007f2766a0ea5a in malloc_printerr (str=str@entry=0x7f2766b27748 "double
free or corruption (fasttop)") at malloc.c:5347
#4 0x00007f2766a0fd55 in _int_free (av=0x7f2744000020, p=0x7f2744005970,
have_lock=0) at malloc.c:4266
#5 0x00005570d8a15fa7 in gssd_get_single_krb5_cred (context=0x7f275c02a390,
kt=0x7f275c002300, ple=ple@entry=0x7f2760001850, nocache=0)
at krb5_util.c:427
#6 0x00005570d8a1627d in gssd_refresh_krb5_machine_credential
(hostname=0x5570da319120 "hostname", ple=0x7f2760001850,
ple@entry=0x0, service=service@entry=0x5570da331840 "*") at krb5_util.c:1302
#7 0x00005570d8a13940 in krb5_use_machine_creds (clp=clp@entry=0x5570da318d80,
uid=uid@entry=0, tgtname=tgtname@entry=0x0,
service=service@entry=0x5570da331840 "*",
rpc_clnt=rpc_clnt@entry=0x7f2757ffede8) at gssd_proc.c:536
#8 0x00005570d8a13b09 in process_krb5_upcall (clp=clp@entry=0x5570da318d80,
uid=uid@entry=0, fd=16, tgtname=tgtname@entry=0x0,
service=service@entry=0x5570da331840 "*") at gssd_proc.c:646
#9 0x00005570d8a1437f in handle_gssd_upcall (info=0x5570da331820) at
gssd_proc.c:805
#10 0x00007f2766b6aea7 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f2766a88a2f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
