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File 1244-erts-Fix-valgrind-uninitialized-data-warning-in-re-i.patch of Package erlang
From def757fa10f6d2ecd315f6ab3ccfa1cb27756a49 Mon Sep 17 00:00:00 2001 From: Sverker Eriksson <sverker@erlang.org> Date: Mon, 1 Feb 2021 17:21:24 +0100 Subject: [PATCH] erts: Fix valgrind uninitialized data warning in re:inspect triggered by re_SUITE:error_info (some times). Make sure binary is at least 4 bytes long so we can read incorrect magic_number and bail out. --- erts/emulator/beam/erl_bif_re.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/erts/emulator/beam/erl_bif_re.c b/erts/emulator/beam/erl_bif_re.c index 568534cab2..0428b4e348 100644 --- a/erts/emulator/beam/erl_bif_re.c +++ b/erts/emulator/beam/erl_bif_re.c @@ -1502,7 +1502,7 @@ re_inspect_2(BIF_ALIST_2) tp = tuple_val(BIF_ARG_1); if (tp[1] != am_re_pattern || is_not_small(tp[2]) || is_not_small(tp[3]) || is_not_small(tp[4]) || - is_not_binary(tp[5])) { + is_not_binary(tp[5]) || binary_size(tp[5]) < 4) { goto error; } if (BIF_ARG_2 != am_namelist) { -- 2.26.2
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