zebra: Initialize RB tree for router tables (backport #19049) #19055
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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> (cherry picked from commit 183783a)
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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
This is an automatic backport of pull request #19049 done by Mergify.