36 lines
1.3 KiB
Diff
36 lines
1.3 KiB
Diff
From: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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To: bpf@vger.kernel.org
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Cc: Alexei Starovoitov <ast@kernel.org>,
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Daniel Borkmann <daniel@iogearbox.net>,
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Andrii Nakryiko <andrii@kernel.org>
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Subject: [PATCH bpf-next] selftests/bpf: Fix OOB write in test_verifier
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Date: Tue, 14 Dec 2021 07:18:00 +0530 [thread overview]
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Message-ID: <20211214014800.78762-1-memxor@gmail.com> (raw)
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The commit referenced below added fixup_map_timer support (to create a
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BPF map containing timers), but failed to increase the size of the
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map_fds array, leading to out of bounds write. Fix this by changing
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MAX_NR_MAPS to 22.
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Fixes: e60e6962c503 ("selftests/bpf: Add tests for restricted helpers")
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Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
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---
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tools/testing/selftests/bpf/test_verifier.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/tools/testing/selftests/bpf/test_verifier.c b/tools/testing/selftests/bpf/test_verifier.c
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index ad5d30bafd93..33e2ecb3bef9 100644
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--- a/tools/testing/selftests/bpf/test_verifier.c
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+++ b/tools/testing/selftests/bpf/test_verifier.c
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@@ -54,7 +54,7 @@
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#define MAX_INSNS BPF_MAXINSNS
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#define MAX_TEST_INSNS 1000000
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#define MAX_FIXUPS 8
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-#define MAX_NR_MAPS 21
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+#define MAX_NR_MAPS 22
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#define MAX_TEST_RUNS 8
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#define POINTER_VALUE 0xcafe4all
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#define TEST_DATA_LEN 64
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--
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2.34.1
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