+++ This bug was initially created as a clone of Bug #1901880 +++ Description of problem: Segfault is seen with the below trace. This patch fixes the issue by checking 'ovnsb_idl_txn' is not NULL before continuing in the function send_garp_locally(). #0 ovsdb_idl_txn_insert (txn=0x0, class=0x64b170 <sbrec_table_classes+816>, uuid=0x0) at ../lib/ovsdb-idl.c:3504 #1 0x000000000041b068 in mac_binding_add (ovnsb_idl_txn=ovnsb_idl_txn@entry=0x0, sbrec_mac_binding_by_lport_ip=sbrec_mac_binding_by_lport_ip@entry=0xf6a7e0, logical_port=0xfd0d70 "lr0-pub", dp=0xfd0f20, ea=..., ip=0xf67be0 "172.24.4.221") at ../controller/pinctrl.c:3877 #2 0x000000000041b18b in send_garp_locally (ovnsb_idl_txn=ovnsb_idl_txn@entry=0x0, sbrec_mac_binding_by_lport_ip=sbrec_mac_binding_by_lport_ip@entry=0xf6a7e0, local_datapaths=local_datapaths@entry=0xf766f0, in_pb=in_pb@entry=0xfd3370, ea=..., ip=3708033196) at ../controller/pinctrl.c:3913 #3 0x000000000041d1be in send_garp_rarp_update (ovnsb_idl_txn=ovnsb_idl_txn@entry=0x0, sbrec_mac_binding_by_lport_ip=sbrec_mac_binding_by_lport_ip@entry=0xf6a7e0, local_datapaths=local_datapaths@entry=0xf766f0, binding_rec=0xfd3370, nat_addresses=nat_addresses@entry=0x7ffdb9295b80) at ../controller/pinctrl.c:4118 #4 0x0000000000425c88 in send_garp_rarp_prepare (active_tunnels=0xf76770, local_datapaths=0xf766f0, chassis=0xfdb4e0, br_int=<optimized out>, sbrec_mac_binding_by_lport_ip=0xf6a7e0, sbrec_port_binding_by_name=0xf6a090, sbrec_port_binding_by_datapath=<optimized out>, ovnsb_idl_txn=0x0) at ../controller/pinctrl.c:5491 #5 pinctrl_run (ovnsb_idl_txn=0x0, sbrec_datapath_binding_by_key=<optimized out>, sbrec_port_binding_by_datapath=<optimized out>, sbrec_port_binding_by_key=<optimized out>, sbrec_port_binding_by_name=0xf6a090, sbrec_mac_binding_by_lport_ip=0xf6a7e0, sbrec_igmp_groups=0xf6ab90, sbrec_ip_multicast_opts=0xf6a9c0, dns_table=0xf33960, ce_table=0xf33960, svc_mon_table=0xf33960, br_int=0xf67d50, chassis=0xfdb4e0, local_datapaths=0xf766f0, active_tunnels=0xf76770) at ../controller/pinctrl.c:3169 #6 0x0000000000408e91 in main (argc=<optimized out>, argv=<optimized out>) at ../controller/ovn-controller.c:2789 Originally reported upstream: http://patchwork.ozlabs.org/project/ovn/patch/20201126085207.645479-1-numans@ovn.org/ This BZ is to track the downstream backport.
@dceara Thank you so much for your verifying the bug through code inspection. I am marking this bug as verified. Thanks. Zhiqiang Fang
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (ovn2.11 bug fix and enhancement update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:0408