From 3cd0accb5051e900ab343d5fa7c59360c0c1a812 Mon Sep 17 00:00:00 2001 From: Donald Sharp Date: Fri, 31 Mar 2023 09:08:23 -0400 Subject: [PATCH] zebra: Cleanup ctx leak on shutdown and turn off event two things: On shutdown cleanup any events associated with the update walker. Also do not allow new events to be created. Fixes this mem-leak: ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790:Direct leak of 8 byte(s) in 1 object(s) allocated from: ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #0 0x7f0dd0b08037 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #1 0x7f0dd06c19f9 in qcalloc lib/memory.c:105 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #2 0x55b42fb605bc in rib_update_ctx_init zebra/zebra_rib.c:4383 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #3 0x55b42fb6088f in rib_update zebra/zebra_rib.c:4421 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #4 0x55b42fa00344 in netlink_link_change zebra/if_netlink.c:2221 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #5 0x55b42fa24622 in netlink_information_fetch zebra/kernel_netlink.c:399 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #6 0x55b42fa28c02 in netlink_parse_info zebra/kernel_netlink.c:1183 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #7 0x55b42fa24951 in kernel_read zebra/kernel_netlink.c:493 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #8 0x7f0dd0797f0c in event_call lib/event.c:1995 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #9 0x7f0dd0684fd9 in frr_run lib/libfrr.c:1185 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #10 0x55b42fa30caa in main zebra/main.c:465 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- #11 0x7f0dd01b5d09 in __libc_start_main ../csu/libc-start.c:308 ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790- ./msdp_topo1.test_msdp_topo1/r2.zebra.asan.1117790-SUMMARY: AddressSanitizer: 8 byte(s) leaked in 1 allocation(s). Signed-off-by: Donald Sharp --- zebra/main.c | 2 ++ zebra/rib.h | 1 + zebra/zebra_rib.c | 19 +++++++++++++++++++ 3 files changed, 22 insertions(+) diff --git a/zebra/main.c b/zebra/main.c index 78932bfced44..81a30664453a 100644 --- a/zebra/main.c +++ b/zebra/main.c @@ -185,6 +185,8 @@ static void sigint(void) */ zebra_routemap_finish(); + rib_update_finish(); + list_delete(&zrouter.client_list); /* Indicate that all new dplane work has been enqueued. When that diff --git a/zebra/rib.h b/zebra/rib.h index 0e897881e440..26425a331fed 100644 --- a/zebra/rib.h +++ b/zebra/rib.h @@ -323,6 +323,7 @@ enum rib_update_event { RIB_UPDATE_OTHER, RIB_UPDATE_MAX }; +void rib_update_finish(void); int route_entry_update_nhe(struct route_entry *re, struct nhg_hash_entry *new_nhghe); diff --git a/zebra/zebra_rib.c b/zebra/zebra_rib.c index 7a9d0c0ed621..ceb0640553a0 100644 --- a/zebra/zebra_rib.c +++ b/zebra/zebra_rib.c @@ -4410,6 +4410,22 @@ static void rib_update_handler(struct event *thread) */ static struct event *t_rib_update_threads[RIB_UPDATE_MAX]; +void rib_update_finish(void) +{ + int i; + + for (i = RIB_UPDATE_KERNEL; i < RIB_UPDATE_MAX; i++) { + if (event_is_scheduled(t_rib_update_threads[i])) { + struct rib_update_ctx *ctx; + + ctx = EVENT_ARG(t_rib_update_threads[i]); + + rib_update_ctx_fini(&ctx); + EVENT_OFF(t_rib_update_threads[i]); + } + } +} + /* Schedule a RIB update event for all vrfs */ void rib_update(enum rib_update_event event) { @@ -4418,6 +4434,9 @@ void rib_update(enum rib_update_event event) if (event_is_scheduled(t_rib_update_threads[event])) return; + if (zebra_router_in_shutdown()) + return; + ctx = rib_update_ctx_init(0, event); event_add_event(zrouter.master, rib_update_handler, ctx, 0,