From: "Štěpán Němec" <snemec@redhat.com>
To: netfilter-devel@vger.kernel.org, Pablo Neira Ayuso <pablo@netfilter.org>
Cc: Phil Sutter <phil@nwl.cc>
Subject: [PATCH nft] tests: cover baecd1cf2685 ("segtree: Fix segfault when restoring a huge interval set")
Date: Wed, 20 Oct 2021 14:42:20 +0200 [thread overview]
Message-ID: <20211020124220.489260-1-snemec@redhat.com> (raw)
Test inspired by [1] with both the set and stack size reduced by the
same power of 2, to preserve the (pre-baecd1cf2685) segfault on one
hand, and make the test successfully complete (post-baecd1cf2685) in a
few seconds even on weaker hardware on the other.
(The reason I stopped at 128kB stack size is that with 64kB I was
getting segfaults even with baecd1cf2685 applied.)
[1] https://bugzilla.redhat.com/show_bug.cgi?id=1908127
Signed-off-by: Štěpán Němec <snemec@redhat.com>
Helped-by: Phil Sutter <phil@nwl.cc>
---
.../sets/0068interval_stack_overflow_0 | 29 +++++++++++++++++++
1 file changed, 29 insertions(+)
create mode 100755 tests/shell/testcases/sets/0068interval_stack_overflow_0
diff --git a/tests/shell/testcases/sets/0068interval_stack_overflow_0 b/tests/shell/testcases/sets/0068interval_stack_overflow_0
new file mode 100755
index 000000000000..134282de2826
--- /dev/null
+++ b/tests/shell/testcases/sets/0068interval_stack_overflow_0
@@ -0,0 +1,29 @@
+#!/bin/bash
+
+set -e
+
+ruleset_file=$(mktemp)
+
+trap 'rm -f "$ruleset_file"' EXIT
+
+{
+ echo 'define big_set = {'
+ for ((i = 1; i < 255; i++)); do
+ for ((j = 1; j < 80; j++)); do
+ echo "10.0.$i.$j,"
+ done
+ done
+ echo '10.1.0.0/24 }'
+} >"$ruleset_file"
+
+cat >>"$ruleset_file" <<\EOF
+table inet test68_table {
+ set test68_set {
+ type ipv4_addr
+ flags interval
+ elements = { $big_set }
+ }
+}
+EOF
+
+( ulimit -s 128 && "$NFT" -f "$ruleset_file" )
base-commit: 2139913694a9850c9160920b2c638aac4828f9bb
--
2.33.1
next reply other threads:[~2021-10-20 12:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-20 12:42 Štěpán Němec [this message]
2021-10-20 13:13 ` [PATCH nft] tests: cover baecd1cf2685 ("segtree: Fix segfault when restoring a huge interval set") Phil Sutter
2021-10-20 13:38 ` Štěpán Němec
2021-10-20 13:53 ` Phil Sutter
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