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From bc2bfe4b68d213c74c634e87dee0116c066209e4 Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Wed, 27 Apr 2022 14:46:47 +0200
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Subject: [PATCH] rule: memleak in __do_add_setelems()
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2073287
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Upstream Status: nftables commit b6d50bfde21b5
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commit b6d50bfde21b5a24a606cbf22137e04e8e0f195d
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Author: Pablo Neira Ayuso <pablo@netfilter.org>
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Date: Thu Apr 30 14:18:45 2020 +0200
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rule: memleak in __do_add_setelems()
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This patch invokes interval_map_decompose() with named sets:
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==3402== 2,352 (128 direct, 2,224 indirect) bytes in 1 blocks are definitely lost in loss record 9 of 9
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==3402== at 0x483577F: malloc (vg_replace_malloc.c:299)
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==3402== by 0x48996A8: xmalloc (utils.c:36)
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==3402== by 0x4899778: xzalloc (utils.c:65)
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==3402== by 0x487CB46: expr_alloc (expression.c:45)
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==3402== by 0x487E2A0: mapping_expr_alloc (expression.c:1140)
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==3402== by 0x4898AA8: interval_map_decompose (segtree.c:1095)
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==3402== by 0x4872BDF: __do_add_setelems (rule.c:1569)
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==3402== by 0x4872BDF: __do_add_setelems (rule.c:1559)
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==3402== by 0x4877936: do_command (rule.c:2710)
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==3402== by 0x489F1CB: nft_netlink.isra.5 (libnftables.c:42)
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==3402== by 0x489FB07: nft_run_cmd_from_filename (libnftables.c:508)
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==3402== by 0x10A9AA: main (main.c:455)
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Fixes: dd44081d91ce ("segtree: Fix add and delete of element in same batch")
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Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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---
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src/rule.c | 3 ++-
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1 file changed, 2 insertions(+), 1 deletion(-)
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diff --git a/src/rule.c b/src/rule.c
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index f7d888b..b2aa1d7 100644
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--- a/src/rule.c
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+++ b/src/rule.c
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@@ -1511,7 +1511,8 @@ static int __do_add_setelems(struct netlink_ctx *ctx, struct set *set,
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if (mnl_nft_setelem_add(ctx, set, expr, flags) < 0)
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return -1;
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- if (set->init != NULL &&
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+ if (!set_is_anonymous(set->flags) &&
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+ set->init != NULL &&
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set->flags & NFT_SET_INTERVAL &&
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set->desc.field_count <= 1) {
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interval_map_decompose(expr);
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--
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2.34.1
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