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Segmentation fault on keepalived #2350

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Anj1Krish opened this issue Oct 10, 2023 · 3 comments
Closed

Segmentation fault on keepalived #2350

Anj1Krish opened this issue Oct 10, 2023 · 3 comments

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@Anj1Krish
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Describe the bug
keepalived gave segmentation fault during reload

To Reproduce
Configured 16 dual stack VRRP instance . Did card reload on HA system . Did card reload again on new active

Expected behavior
No segmentation fault

Keepalived version
Keepalived v2.0.19 (10/19,2019)

Copyright(C) 2001-2019 Alexandre Cassen, acassen@gmail.com

Built with kernel headers for Linux 4.15.7
Running on Linux 4.14.67-yocto-standard #1 SMP Tue Sep 26 01:54:37 UTC 2023

Output of `keepalived -v`
```Keepalived v2.0.19 (10/19,2019)

Copyright(C) 2001-2019 Alexandre Cassen, <acassen@gmail.com>

Built with kernel headers for Linux 4.15.7
Running on Linux 4.14.67-yocto-standard #1 SMP Tue Sep 26 01:54:37 UTC 2023

configure options: --build=x86_64-linux --host=x86_64-poky-linux --target=x86_64-poky-linux --prefix=/usr --exec_prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/libexec --datadir=/usr/share --sysconfdir=/etc --sharedstatedir=/com --localstatedir=/var --libdir=/usr/lib --includedir=/usr/include --oldincludedir=/usr/include --infodir=/usr/share/info --mandir=/usr/share/man --disable-silent-rules --disable-dependency-tracking --with-libtool-sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot --disable-libiptc --enable-log-file --enable-json --disable-static json-c-devel --enable-libnl --disable-snmp --with-init=SYSV build_alias=x86_64-linux host_alias=x86_64-poky-linux target_alias=x86_64-poky-linux PKG_CONFIG_PATH=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot/usr/lib/pkgconfig:/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot/usr/share/pkgconfig PKG_CONFIG_LIBDIR=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot/usr/lib/pkgconfig CC=x86_64-poky-linux-gcc -m64 -march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2 --sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot CFLAGS= -O2 -pipe -g -feliminate-unused-debug-types -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0=/usr/src/debug/keepalived/2.0.19-r0 -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot= -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot-native=  LDFLAGS=-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed CPPFLAGS= CPP=x86_64-poky-linux-gcc -E --sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/recipe-sysroot -m64 -march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2

Config options:  IPTABLES_CMD LVS VRRP VRRP_AUTH JSON OLD_CHKSUM_COMPAT FIB_ROUTING FILE_LOGGING LOG_FILE_APPEND

System options:  PIPE2 SIGNALFD INOTIFY_INIT1 VSYSLOG EPOLL_CREATE1 IPV4_DEVCONF IPV6_ADVANCED_API RTA_ENCAP RTA_EXPIRES RTA_NEWDST RTA_PREF FRA_SUPPRESS_PREFIXLEN FRA_SUPPRESS_IFGROUP FRA_TUN_ID RTAX_CC_ALGO RTAX_QUICKACK RTEXT_FILTER_SKIP_STATS FRA_L3MDEV FRA_UID_RANGE RTAX_FASTOPEN_NO_COOKIE RTA_VIA FRA_OIFNAME RTA_TTL_PROPAGATE IFA_FLAGS IP_MULTICAST_ALL LWTUNNEL_ENCAP_MPLS LWTUNNEL_ENCAP_ILA NET_LINUX_IF_H_COLLISION LIBIPTC_LINUX_NET_IF_H_COLLISION IPVS_DEST_ATTR_ADDR_FAMILY IPVS_SYNCD_ATTRIBUTES IPVS_64BIT_STATS VRRP_VMAC VRRP_IPVLAN IFLA_LINK_NETNSID CN_PROC SOCK_NONBLOCK SOCK_CLOEXEC O_PATH GLOB_BRACE INET6_ADDR_GEN_MODE VRF SO_MARK SCHED_RT SCHED_RESET_ON_FORK

**Distro (please complete the following information):**
 - Name: [e.g. Fedora, Ubuntu]
 - Version: [e.g. 29]
 - Architecture: [e.g. x86_64]

**Details of any containerisation or hosted service (e.g. AWS)**
If keepalived is being run in a container or on a hosted service, provide full details

**Configuration file:**

A full copy of the configuration file, obfuscated if necessary to protect passwords and IP addresses


**Notify and track scripts**

If any notify or track scripts are in use, please provide copies of them


**System Log entries**

Full keepalived system log entries from when keepalived started

Fri Oct  6 03:08:35 2023: WARNING - keepalived was build for newer Linux 4.15.7, running on Linux 4.14.67-yocto-standard #1 SMP Tue Sep 26 01:54:37 UTC 2023
Fri Oct  6 03:08:35 2023: Command line: '/usr/sbin/keepalived' '-f' '/etc/arc/vrrpd/keepalived.conf' '-P' '-D' '-m'
Fri Oct  6 03:08:35 2023:               '--log-file=/var/log/keepalived.log' '--flush-log-file' '--release-vips'
Fri Oct  6 03:08:35 2023: Opening file '/etc/arc/vrrpd/keepalived.conf'.
Fri Oct  6 03:08:35 2023: Starting VRRP child process, pid=22321
Fri Oct  6 03:09:00 2023: Keepalived_vrrp exited due to segmentation fault (SIGSEGV).
Fri Oct  6 03:09:00 2023:   Please report a bug at https://github.com/acassen/keepalived/issues
Fri Oct  6 03:09:00 2023:   and include this log from when keepalived started, a description
Fri Oct  6 03:09:00 2023:   of what happened before the crash, your configuration file and the details below.
Fri Oct  6 03:09:00 2023:   Also provide the output of keepalived -v, what Linux distro and version
Fri Oct  6 03:09:00 2023:   you are running on, and whether keepalived is being run in a container or VM.
Fri Oct  6 03:09:00 2023:   A failure to provide all this information may mean the crash cannot be investigated.
Fri Oct  6 03:09:00 2023:   If you are able to provide a stack backtrace with gdb that would really help.
Fri Oct  6 03:09:00 2023:   Source version 2.0.19
Fri Oct  6 03:09:00 2023:   Built with kernel headers for Linux 4.15.7
Fri Oct  6 03:09:00 2023:   Running on Linux 4.14.67-yocto-standard #1 SMP Tue Sep 26 01:54:37 UTC 2023
Fri Oct  6 03:09:00 2023:   Command line: '/usr/sbin/keepalived' '-f' '/etc/arc/vrrpd/keepalived.conf' '-P' '-D' '-m'
Fri Oct  6 03:09:00 2023:                 '--log-file=/var/log/keepalived.log' '--flush-log-file' '--release-vips'
Fri Oct  6 03:09:00 2023:   configure options: --build=x86_64-linux --host=x86_64-poky-linux --target=x86_64-poky-linux
Fri Oct  6 03:09:00 2023:                      --prefix=/usr --exec_prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin
Fri Oct  6 03:09:00 2023:                      --libexecdir=/usr/libexec --datadir=/usr/share --sysconfdir=/etc
Fri Oct  6 03:09:00 2023:                      --sharedstatedir=/com --localstatedir=/var --libdir=/usr/lib
Fri Oct  6 03:09:00 2023:                      --includedir=/usr/include --oldincludedir=/usr/include --infodir=/usr/share/info
Fri Oct  6 03:09:00 2023:                      --mandir=/usr/share/man --disable-silent-rules --disable-dependency-tracking
Fri Oct  6 03:09:00 2023:                      --with-libtool-sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build
Fri Oct  6 03:09:00 2023:                      -dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepaliv
Fri Oct  6 03:09:00 2023:                      ed/2.0.19-r0/recipe-sysroot --disable-libiptc --enable-log-file --enable-json
Fri Oct  6 03:09:00 2023:                      --disable-static json-c-devel --enable-libnl --disable-snmp --with-init=SYSV
Fri Oct  6 03:09:00 2023:                      build_alias=x86_64-linux host_alias=x86_64-poky-linux
Fri Oct  6 03:09:00 2023:                      target_alias=x86_64-poky-linux
Fri Oct  6 03:09:00 2023:                      PKG_CONFIG_PATH=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IB
Fri Oct  6 03:09:00 2023:                      AXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.
Fri Oct  6 03:09:00 2023:                      19-r0/recipe-sysroot/usr/lib/pkgconfig:/sandbox-local/bamboo/bamboo-all-agents-buil
Fri Oct  6 03:09:00 2023:                      d/xml-data/build-dir/IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-pok
Fri Oct  6 03:09:00 2023:                      y-linux/keepalived/2.0.19-r0/recipe-sysroot/usr/share/pkgconfig
Fri Oct  6 03:09:00 2023:                      PKG_CONFIG_LIBDIR=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/
Fri Oct  6 03:09:00 2023:                      IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.
Fri Oct  6 03:09:00 2023:                      0.19-r0/recipe-sysroot/usr/lib/pkgconfig CC=x86_64-poky-linux-gcc -m64
Fri Oct  6 03:09:00 2023:                      -march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2
Fri Oct  6 03:09:00 2023:                      --sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS23
Fri Oct  6 03:09:00 2023:                      4-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/
Fri Oct  6 03:09:00 2023:                      recipe-sysroot CFLAGS= -O2 -pipe -g -feliminate-unused-debug-types
Fri Oct  6 03:09:00 2023:                      -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir
Fri Oct  6 03:09:00 2023:                      /IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2
Fri Oct  6 03:09:00 2023:                      .0.19-r0=/usr/src/debug/keepalived/2.0.19-r0
Fri Oct  6 03:09:00 2023:                      -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir
Fri Oct  6 03:09:00 2023:                      /IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2
Fri Oct  6 03:09:00 2023:                      .0.19-r0/recipe-sysroot=
Fri Oct  6 03:09:00 2023:                      -fdebug-prefix-map=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir
Fri Oct  6 03:09:00 2023:                      /IBAXOS234-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2
Fri Oct  6 03:09:00 2023:                      .0.19-r0/recipe-sysroot-native=  LDFLAGS=-Wl,-O1 -Wl,--hash-style=gnu
Fri Oct  6 03:09:00 2023:                      -Wl,--as-needed CPPFLAGS= CPP=x86_64-poky-linux-gcc -E
Fri Oct  6 03:09:00 2023:                      --sysroot=/sandbox-local/bamboo/bamboo-all-agents-build/xml-data/build-dir/IBAXOS23
Fri Oct  6 03:09:00 2023:                      4-CI3-BLD/E9-ASM/srcBuild/build/tmp/work/corei7-64-poky-linux/keepalived/2.0.19-r0/
Fri Oct  6 03:09:00 2023:                      recipe-sysroot -m64 -march=corei7 -mtune=corei7 -mfpmath=sse -msse4.2
Fri Oct  6 03:09:00 2023:   Config options: IPTABLES_CMD LVS VRRP VRRP_AUTH JSON OLD_CHKSUM_COMPAT FIB_ROUTING FILE_LOGGING
Fri Oct  6 03:09:00 2023:                   LOG_FILE_APPEND
Fri Oct  6 03:09:00 2023:   System options: PIPE2 SIGNALFD INOTIFY_INIT1 VSYSLOG EPOLL_CREATE1 IPV4_DEVCONF IPV6_ADVANCED_API
Fri Oct  6 03:09:00 2023:                   RTA_ENCAP RTA_EXPIRES RTA_NEWDST RTA_PREF FRA_SUPPRESS_PREFIXLEN FRA_SUPPRESS_IFGROUP
Fri Oct  6 03:09:00 2023:                   FRA_TUN_ID RTAX_CC_ALGO RTAX_QUICKACK RTEXT_FILTER_SKIP_STATS FRA_L3MDEV FRA_UID_RANGE
Fri Oct  6 03:09:00 2023:                   RTAX_FASTOPEN_NO_COOKIE RTA_VIA FRA_OIFNAME RTA_TTL_PROPAGATE IFA_FLAGS
Fri Oct  6 03:09:00 2023:                   IP_MULTICAST_ALL LWTUNNEL_ENCAP_MPLS LWTUNNEL_ENCAP_ILA NET_LINUX_IF_H_COLLISION
Fri Oct  6 03:09:00 2023:                   LIBIPTC_LINUX_NET_IF_H_COLLISION IPVS_DEST_ATTR_ADDR_FAMILY IPVS_SYNCD_ATTRIBUTES
Fri Oct  6 03:09:00 2023:                   IPVS_64BIT_STATS VRRP_VMAC VRRP_IPVLAN IFLA_LINK_NETNSID CN_PROC SOCK_NONBLOCK
Fri Oct  6 03:09:00 2023:                   SOCK_CLOEXEC O_PATH GLOB_BRACE INET6_ADDR_GEN_MODE VRF SO_MARK SCHED_RT
Fri Oct  6 03:09:00 2023:                   SCHED_RESET_ON_FORK
Fri Oct  6 03:09:00 2023: VRRP child process(22321) died: Respawning
Fri Oct  6 03:09:00 2023: Starting VRRP child process, pid=23991


**Did keepalived coredump?**

Yes , but symbol table was not proper. I tried to take the diff of _start and tried to get the correct symbols manually

[New LWP 22321]
Core was generated by `/usr/sbin/keepalived -f /etc/arc/vrrpd/keepalived.conf -P -D -m --log-file=/var'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x0000561e115e7280 in ?? ()
#0  0x0000561e115e7280 in ?? ()
#1  0x0000561e115c2097 in ?? ()
#2  0x0000561e115c212a in ?? ()
#3  0x0000561e115c24ca in ?? ()
#4  0x0000561e115c2bcb in ?? ()
#5  0x0000561e115bf88f in ?? ()
#6  0x0000561e115f0166 in ?? ()
#7  0x0000561e115e3f05 in ?? ()
#8  0x0000561e115d5baf in ?? ()
#9  0x0000561e115d621b in ?? ()
#10 0x0000561e115ba21a in ?? ()
#11 0x00007fba1bce4ad7 in __libc_start_main () from /lib/libc.so.6
#12 0x0000561e115b805a in ?? ()

Thread 1 (LWP 22321):
#0  0x0000561e115e7280 in ?? ()
No symbol table info available.
#1  0x0000561e115c2097 in ?? ()
No symbol table info available.
#2  0x0000561e115c212a in ?? ()
No symbol table info available.
#3  0x0000561e115c24ca in ?? ()
No symbol table info available.
#4  0x0000561e115c2bcb in ?? ()
No symbol table info available.
#5  0x0000561e115bf88f in ?? ()
No symbol table info available.
#6  0x0000561e115f0166 in ?? ()
No symbol table info available.
#7  0x0000561e115e3f05 in ?? ()
No symbol table info available.
#8  0x0000561e115d5baf in ?? ()
No symbol table info available.
#9  0x0000561e115d621b in ?? ()
No symbol table info available.
#10 0x0000561e115ba21a in ?? ()
No symbol table info available.
#11 0x00007fba1bce4ad7 in __libc_start_main () from /lib/libc.so.6
No symbol table info available.
#12 0x0000561e115b805a in ?? ()
No symbol table info available.

**Additional context**
The bt somewhat looks like below :
keepalived_main
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/main.c:2042
vrrp_signal_init
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/vrrp/vrrp_daemon.c:729
start_vrrp
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/vrrp/vrrp_daemon.c:529
vrrp_complete_instance
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/vrrp/vrrp.c:2730
netlink_link_add_vmac
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/vrrp/vrrp_vmac.c:305
netlink_parse_info
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/keepalived_netlink.c:1329
netlink_broadcast_filter
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/keepalived_netlink.c:2299
netlink_link_filter
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/keepalived_netlink.c:1953
update_interface_flags
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/keepalived_netlink.c:1546
process_if_status_change
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/core/keepalived_netlink.c:1508
try_up_instance
/usr/src/debug/keepalived/2.0.19-r0/keepalived-2.0.19/keepalived/vrrp/vrrp_scheduler.c:682

The keepalived vrrp had given the following error too : 


Fri Oct  6 03:08:35 2023: Registering Kernel netlink reflector
Fri Oct  6 03:08:35 2023: Registering Kernel netlink command channel
Fri Oct  6 03:08:35 2023: Opening file '/etc/arc/vrrpd/keepalived.conf'.
Fri Oct  6 03:08:35 2023: (VI_1_3200_6_la7.3200) the first IPv6 VIP address must be link local
Fri Oct  6 03:08:35 2023: Assigned address 132.33.0.6 for interface la7.3200
Fri Oct  6 03:08:35 2023: Assigned address fe80::4665:7fff:fe07:2702 for interface la7.3200
Fri Oct  6 03:08:35 2023: (VI_1_3200_6_la7.3200): Success creating VMAC interface vrrp.1
Fri Oct  6 03:08:35 2023: Netlink: error: Cannot allocate memory(12), type=RTM_NEWADDR(20), seq=1696586922, pid=0
Fri Oct  6 03:08:35 2023: Adding link-local address to vmac failed
@pqarmitage
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Collaborator

It appears that your keepalived is build on a system with Linux 4.15.7 kernel headers, but you are running on a kernel with 4.14.67 headers. This is not valid, since keepalived determines what kernel functionality is available based on the kernel headers it is built against. It may not matter in this case, but it might be the cause of your problem.

Another potential issue is that the version of keepalived you are running is very nearly 4 years old, and we might have fixed the issue between then and now (however, I have not seen this problem before and so it is unlikely).

What is most interesting is the log message:
Fri Oct 6 03:08:35 2023: Netlink: error: Cannot allocate memory(12), type=RTM_NEWADDR(20), seq=1696586922, pid=0
This would seem to suggest that the kernel is not able to allocate memory, which in turn suggests that your system is in a very bad way. I can well imagine that keepalived may not handle a failure to add a link local address to a VMAC, since we have probably never seen an ENOMEM error at that point.

I think you need to resolve the Netlink "Cannot allocate memory" error, and ensure that keepalived is not built with newer kernel than it is being run on. I will try some test code to see what happens if a link-local address is not added, and see if I can generate a segfault. It would also be helpful if you could provide a copy of your configuration.

@Anj1Krish
Copy link
Author

Thanks for looking into the issue . Copy of the configs given below:

global_defs
{
vrrp_version 3
enable_script_security
script_user root
}
vrrp_sync_group VI_1_3200_la7.3200
{
group {
VI_1_3200_6_la7.3200
VI_1_3200_4_la7.3200
}
}
vrrp_instance VI_1_3200_6_la7.3200
{
interface la7.3200
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 51
advert_int 1
virtual_ipaddress
{
1032::100
}
}
vrrp_instance VI_1_3200_4_la7.3200
{
interface la7.3200
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 51
advert_int 1
virtual_ipaddress
{
132.33.0.10
}
}
vrrp_sync_group VI_1_3201_la7.3201
{
group {
VI_1_3201_6_la7.3201
VI_1_3201_4_la7.3201
}
}
vrrp_instance VI_1_3201_6_la7.3201
{
interface la7.3201
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 51
advert_int 1
virtual_ipaddress
{
1033::100
}
}
vrrp_instance VI_1_3201_4_la7.3201
{
interface la7.3201
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 51
advert_int 1
virtual_ipaddress
{
133.34.0.10
}
}
vrrp_sync_group VI_1_3202_la7.3202
{
group {
VI_1_3202_6_la7.3202
VI_1_3202_4_la7.3202
}
}
vrrp_instance VI_1_3202_6_la7.3202
{
interface la7.3202
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 52
advert_int 1
virtual_ipaddress
{
1034::100
}
}
vrrp_instance VI_1_3202_4_la7.3202
{
interface la7.3202
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 52
advert_int 1
virtual_ipaddress
{
134.35.0.10
}
}
vrrp_sync_group VI_1_3203_la7.3203
{
group {
VI_1_3203_6_la7.3203
VI_1_3203_4_la7.3203
}
}
vrrp_instance VI_1_3203_6_la7.3203
{
interface la7.3203
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 53
advert_int 1
virtual_ipaddress
{
1035::100
}
}
vrrp_instance VI_1_3203_4_la7.3203
{
interface la7.3203
virtual_router_id 1
use_vmac
garp_master_refresh 60
priority 53
advert_int 1
virtual_ipaddress
{
135.36.0.100
}
}
vrrp_sync_group VI_2_3204_la7.3204
{
group {
VI_2_3204_6_la7.3204
VI_2_3204_4_la7.3204
}
}
vrrp_instance VI_2_3204_6_la7.3204
{
interface la7.3204
virtual_router_id 2
use_vmac
garp_master_refresh 60
priority 54
advert_int 1
virtual_ipaddress
{
1036::100
}
}
vrrp_instance VI_2_3204_4_la7.3204
{
interface la7.3204
virtual_router_id 2
use_vmac
garp_master_refresh 60
priority 54
advert_int 1
virtual_ipaddress
{
136.37.0.100
}
}
vrrp_sync_group VI_2_3205_la7.3205
{
group {
VI_2_3205_6_la7.3205
VI_2_3205_4_la7.3205
}
}
vrrp_instance VI_2_3205_6_la7.3205
{
interface la7.3205
virtual_router_id 2
use_vmac
garp_master_refresh 60
priority 55
advert_int 1
virtual_ipaddress
{
1037::100
}
}
vrrp_instance VI_2_3205_4_la7.3205
{
interface la7.3205
virtual_router_id 2
use_vmac
garp_master_refresh 60
priority 55
advert_int 1
virtual_ipaddress
{
137.38.0.100
}
}
vrrp_sync_group VI_3_3206_la7.3206
{
group {
VI_3_3206_6_la7.3206
VI_3_3206_4_la7.3206
}
}
vrrp_instance VI_3_3206_6_la7.3206
{
interface la7.3206
virtual_router_id 3
use_vmac
garp_master_refresh 60
priority 56
advert_int 1
virtual_ipaddress
{
1038::100
}
}
vrrp_instance VI_3_3206_4_la7.3206
{
interface la7.3206
virtual_router_id 3
use_vmac
garp_master_refresh 60
priority 56
advert_int 1
virtual_ipaddress
{
138.39.0.100
}
}
vrrp_sync_group VI_3_3207_la7.3207
{
group {
VI_3_3207_6_la7.3207
VI_3_3207_4_la7.3207
}
}
vrrp_instance VI_3_3207_6_la7.3207
{
interface la7.3207
virtual_router_id 3
use_vmac
garp_master_refresh 60
priority 10
advert_int 1
virtual_ipaddress
{
1039::100
}
}
vrrp_instance VI_3_3207_4_la7.3207
{
interface la7.3207
virtual_router_id 3
use_vmac
garp_master_refresh 60
priority 10
advert_int 1
virtual_ipaddress
{
139.40.0.100
}
}
vrrp_sync_group VI_4_3208_la7.3208
{
group {
VI_4_3208_6_la7.3208
VI_4_3208_4_la7.3208
}
}
vrrp_instance VI_4_3208_6_la7.3208
{
interface la7.3208
virtual_router_id 4
use_vmac
garp_master_refresh 60
priority 110
advert_int 1
virtual_ipaddress
{
2047::100
}
}
vrrp_instance VI_4_3208_4_la7.3208
{
interface la7.3208
virtual_router_id 4
use_vmac
garp_master_refresh 60
priority 110
advert_int 1
virtual_ipaddress
{
140.41.0.100
}
}
vrrp_sync_group VI_4_3209_la7.3209
{
group {
VI_4_3209_6_la7.3209
VI_4_3209_4_la7.3209
}
}
vrrp_instance VI_4_3209_6_la7.3209
{
interface la7.3209
virtual_router_id 4
use_vmac
garp_master_refresh 60
priority 102
advert_int 1
virtual_ipaddress
{
1041::100
}
}
vrrp_instance VI_4_3209_4_la7.3209
{
interface la7.3209
virtual_router_id 4
use_vmac
garp_master_refresh 60
priority 102
advert_int 1
virtual_ipaddress
{
141.42.0.100
}
}
vrrp_sync_group VI_5_3210_la7.3210
{
group {
VI_5_3210_6_la7.3210
VI_5_3210_4_la7.3210
}
}
vrrp_instance VI_5_3210_6_la7.3210
{
interface la7.3210
virtual_router_id 5
use_vmac
garp_master_refresh 60
priority 103
advert_int 1
virtual_ipaddress
{
1042::100
}
}
vrrp_instance VI_5_3210_4_la7.3210
{
interface la7.3210
virtual_router_id 5
use_vmac
garp_master_refresh 60
priority 103
advert_int 1
virtual_ipaddress
{
142.43.0.100
}
}
vrrp_sync_group VI_5_3211_la7.3211
{
group {
VI_5_3211_6_la7.3211
VI_5_3211_4_la7.3211
}
}
vrrp_instance VI_5_3211_6_la7.3211
{
interface la7.3211
virtual_router_id 5
use_vmac
garp_master_refresh 60
priority 104
advert_int 1
virtual_ipaddress
{
1043::100
}
}
vrrp_instance VI_5_3211_4_la7.3211
{
interface la7.3211
virtual_router_id 5
use_vmac
garp_master_refresh 60
priority 104
advert_int 1
virtual_ipaddress
{
143.44.0.100
}
}
vrrp_sync_group VI_6_3212_la7.3212
{
group {
VI_6_3212_6_la7.3212
VI_6_3212_4_la7.3212
}
}
vrrp_instance VI_6_3212_6_la7.3212
{
interface la7.3212
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 105
advert_int 1
virtual_ipaddress
{
1044::100
}
}
vrrp_instance VI_6_3212_4_la7.3212
{
interface la7.3212
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 105
advert_int 1
virtual_ipaddress
{
144.45.0.100
}
}
vrrp_sync_group VI_6_3213_la7.3213
{
group {
VI_6_3213_6_la7.3213
VI_6_3213_4_la7.3213
}
}
vrrp_instance VI_6_3213_6_la7.3213
{
interface la7.3213
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 106
advert_int 1
virtual_ipaddress
{
1045::100
}
}
vrrp_instance VI_6_3213_4_la7.3213
{
interface la7.3213
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 106
advert_int 1
virtual_ipaddress
{
145.46.0.100
}
}
vrrp_sync_group VI_6_3214_la7.3214
{
group {
VI_6_3214_6_la7.3214
VI_6_3214_4_la7.3214
}
}
vrrp_instance VI_6_3214_6_la7.3214
{
interface la7.3214
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 106
advert_int 1
virtual_ipaddress
{
1046::100
}
}
vrrp_instance VI_6_3214_4_la7.3214
{
interface la7.3214
virtual_router_id 6
use_vmac
garp_master_refresh 60
priority 106
advert_int 1
virtual_ipaddress
{
146.47.0.100
}
}
vrrp_sync_group VI_7_3215_la7.3215
{
group {
VI_7_3215_6_la7.3215
VI_7_3215_4_la7.3215
}
}
vrrp_instance VI_7_3215_6_la7.3215
{
interface la7.3215
virtual_router_id 7
use_vmac
garp_master_refresh 60
priority 10
advert_int 1
virtual_ipaddress
{
1048::100
}
}
vrrp_instance VI_7_3215_4_la7.3215
{
interface la7.3215
virtual_router_id 7
use_vmac
garp_master_refresh 60
priority 10
advert_int 1
virtual_ipaddress
{
147.48.0.100
}
}

@pqarmitage
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I have simulated failing to add a link-local address to the VMAC for VI_1_3200_6_la7.3200, since I cannot reproduce the ENOMEM problem. Although I have not been able to reproduce the segfault, it is clear that the code is not handling the failure to add the link-local address.

Commit 0b3265b handles failure to add an IPv6 link-local address to a VMAC. Commit e73702a stops an error being logged for failure to send an advert after the IPv6 link-local address has been removed from the VMAC (this isn't directly relevant to this issue, but the problem was noticed when testing this issue).

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@pqarmitage @Anj1Krish