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From 9a41628f4206efe645f5a058a7d71a4503b5869a Mon Sep 17 00:00:00 2001
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From: Phil Sutter <psutter@redhat.com>
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Date: Tue, 21 Feb 2023 19:50:41 +0100
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Subject: [PATCH] optimize: Clarify chain_optimize() array allocations
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2160049
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Upstream Status: nftables commit b83a0416cdc88
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commit b83a0416cdc881c6ac35739cd858e4fe5fb2e04f
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Author: Phil Sutter <phil@nwl.cc>
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Date: Tue Jan 10 22:13:44 2023 +0100
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optimize: Clarify chain_optimize() array allocations
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Arguments passed to sizeof() where deemed suspicious by covscan due to
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the different type. Consistently specify size of an array 'a' using
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'sizeof(*a) * nmemb'.
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For the statement arrays in stmt_matrix, even use xzalloc_array() since
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the item count is fixed and therefore can't be zero.
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Fixes: fb298877ece27 ("src: add ruleset optimization infrastructure")
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Signed-off-by: Phil Sutter <phil@nwl.cc>
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Signed-off-by: Phil Sutter <psutter@redhat.com>
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---
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src/optimize.c | 7 ++++---
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1 file changed, 4 insertions(+), 3 deletions(-)
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diff --git a/src/optimize.c b/src/optimize.c
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index 6514cbb..baa6abc 100644
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--- a/src/optimize.c
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+++ b/src/optimize.c
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@@ -918,10 +918,11 @@ static int chain_optimize(struct nft_ctx *nft, struct list_head *rules)
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ctx->num_rules++;
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}
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- ctx->rule = xzalloc(sizeof(ctx->rule) * ctx->num_rules);
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- ctx->stmt_matrix = xzalloc(sizeof(struct stmt *) * ctx->num_rules);
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+ ctx->rule = xzalloc(sizeof(*ctx->rule) * ctx->num_rules);
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+ ctx->stmt_matrix = xzalloc(sizeof(*ctx->stmt_matrix) * ctx->num_rules);
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for (i = 0; i < ctx->num_rules; i++)
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- ctx->stmt_matrix[i] = xzalloc(sizeof(struct stmt *) * MAX_STMTS);
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+ ctx->stmt_matrix[i] = xzalloc_array(MAX_STMTS,
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+ sizeof(**ctx->stmt_matrix));
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merge = xzalloc(sizeof(*merge) * ctx->num_rules);
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--
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2.39.2
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