zebra: Initialize RB tree for router tables #19049
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RB tree for router table is not initializes and can have garbage values leading to crashes when zebra boots. ==52257== Invalid read of size 4 ==52257== at 0x24A683: zebra_router_table_entry_compare (zebra_router.c:46) ==52257== by 0x24A683: zebra_router_table_head_RB_COMPARE (zebra_router.c:38) ==52257== by 0x494859F: _rb_find (openbsd-tree.c:415) ==52257== by 0x24AA44: zebra_router_table_head_RB_FIND (zebra_router.h:39) ==52257== by 0x24AA44: zebra_router_get_table (zebra_router.c:131) ==52257== by 0x268AB8: zebra_vrf_table_create (zebra_vrf.c:432) ==52257== by 0x268AB8: zebra_vrf_enable (zebra_vrf.c:140) ==52257== by 0x4977036: vrf_enable (vrf.c:286) ==52257== by 0x4977036: vrf_enable (vrf.c:275) ==52257== by 0x497797D: vrf_init (vrf.c:554) ==52257== by 0x269854: zebra_vrf_init (zebra_vrf.c:645) ==52257== by 0x237315: zebra_ns_init (zebra_ns.c:252) ==52257== by 0x1BF284: main (main.c:469) ==52257== Address 0x56415741e5894875 is not stack'd, malloc'd or (recently) free'd ==52257== ==52257== ==52257== Process terminating with default action of signal 11 (SIGSEGV): dumping core ==52257== at 0x4D07EEC: __pthread_kill_implementation (pthread_kill.c:44) ==52257== by 0x4CB8FB1: raise (raise.c:26) ==52257== by 0x4961BFB: core_handler (sigevent.c:261) ==52257== by 0x4CB904F: ??? (in /usr/lib/x86_64-linux-gnu/libc.so.6) ==52257== by 0x24A682: zebra_router_table_entry_compare (zebra_router.c:46) ==52257== by 0x24A682: zebra_router_table_head_RB_COMPARE (zebra_router.c:38) ==52257== by 0x494859F: _rb_find (openbsd-tree.c:415) ==52257== by 0x24AA44: zebra_router_table_head_RB_FIND (zebra_router.h:39) ==52257== by 0x24AA44: zebra_router_get_table (zebra_router.c:131) ==52257== by 0x268AB8: zebra_vrf_table_create (zebra_vrf.c:432) ==52257== by 0x268AB8: zebra_vrf_enable (zebra_vrf.c:140) ==52257== by 0x4977036: vrf_enable (vrf.c:286) ==52257== by 0x4977036: vrf_enable (vrf.c:275) ==52257== by 0x497797D: vrf_init (vrf.c:554) ==52257== by 0x269854: zebra_vrf_init (zebra_vrf.c:645) ==52257== by 0x237315: zebra_ns_init (zebra_ns.c:252) ==52257== Ticket :#4502759 Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>
ton31337
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Jun 19, 2025
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@Mergifyio backport dev/10.4 stable/10.3 stable/10.2 stable/10.1 stable/10.0 |
✅ Backports have been created
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This was referenced Jun 20, 2025
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zebra: Initialize RB tree for router tables (backport #19049)
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zebra: Initialize RB tree for router tables (backport #19049)
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* bgpd: correct no form commands (backport FRRouting#18911) * bgpd: fix to show exist/non-exist-map in 'show run' properly FRRouting#18853 * redhat: make FRR RPM build to work on RedHat 10 (backport FRRouting#18920) * build: check for libunwind.h, not unwind.h (backport FRRouting#18912) * bgpd: use AS4B format for BGP loc-rib messages. (backport FRRouting#18936) * bgpd: fix for the validity and the presence of prefixes in the BGP VPN table. (backport FRRouting#17370) * bgpd: Force adj-rib-out updates if MRAI is kicked in (backport FRRouting#18959) * zebra: Provide SID value when sending SRv6 SID release notify message (backport FRRouting#18971) * bgpd: Fix crash when fetching statistics for bgp instance (backport FRRouting#19003) * nhrpd: fix crash when accessing invalid memory zone (backport FRRouting#18994) * zebra: Initialize RB tree for router tables (backport FRRouting#19049) * zebra: fix null pointer dereference in zebra_evpn_sync_neigh_del (backport FRRouting#19054) * zebra: fix stale NHG in kernel (backport FRRouting#18899) * bgpd: Fix incorrect stripping of transitive extended communities (backport FRRouting#19065) * lib: Fix no on-match goto NUM command (backport FRRouting#19108) * bgpd: Fix extended community check for IP non-transitive type (backport FRRouting#19097) * bgpd: Fix DEREF_OF_NULL.EX.COND in bgp_updgrp_packet (backport FRRouting#19126) * lib: revert addition of vtysh_flush() call in vty_out() (backport FRRouting#19109) * bgpd: Extract link bandwidth value from extcommunity before using for WCMP (backport FRRouting#19165) * Use ipv4 class E addresses (240.0.0.0/4) as connected routes by default (backport FRRouting#18095) * bfdd: Set bfd.LocalDiag when transitioning to AdminDown (backport FRRouting#18592) * zebra: clean up a json object leak (backport FRRouting#19192) * bgpd: Do not try to reuse freed route-maps (backport FRRouting#19191) * lib: fix routemap crash (backport FRRouting#19127) * bgpd: initialize local variable (backport FRRouting#19233) * ospfd: Use after free cleanup of lsa (backport FRRouting#19224) * vtysh: copy config from file should actually apply (backport FRRouting#19242) * bgpd : Fix compilation error in bgpd module: Update TP_ARGS for bgp (backport FRRouting#19266) * bgpd: Ensure addpath does not withdraw selected route in some situations (backport FRRouting#19210) * lib, zebra: mark singleton nexthops inactive/active on link state changes for wecmp (backport FRRouting#18947) * eigrp: validate hello packets and tlvs better (backport FRRouting#19251) * bgpd: [GR] fixed selectionDeferralTimer to display select_defer_time val FRRouting#19283 Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
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RB tree for router table is not initializes and can have garbage values leading to crashes when zebra boots.
Ticket :#4502759