test: Move valgrind.supp to the other sanitizer_suppressions files

diff --git a/ci/test/wrap-valgrind.sh b/ci/test/wrap-valgrind.sh
index e351cf24..4ed3f2d6 100755
--- a/ci/test/wrap-valgrind.sh
+++ b/ci/test/wrap-valgrind.sh
@@ -12,7 +12,7 @@ for b_name in "${BASE_OUTDIR}/bin"/*; do
       echo "Wrap $b ..."
       mv "$b" "${b}_orig"
       echo '#!/usr/bin/env bash' > "$b"
-      echo "exec valgrind --gen-suppressions=all --quiet --error-exitcode=1 --suppressions=${BASE_ROOT_DIR}/contrib/valgrind.supp \"${b}_orig\" \"\$@\"" >> "$b"
+      echo "exec valgrind --gen-suppressions=all --quiet --error-exitcode=1 --suppressions=${BASE_ROOT_DIR}/test/sanitizer_suppressions/valgrind.supp \"${b}_orig\" \"\$@\"" >> "$b"
       chmod +x "$b"
     done
 done
diff --git a/contrib/valgrind.supp b/contrib/valgrind.supp
deleted file mode 100644
index c7a890aa..00000000
--- a/contrib/valgrind.supp
+++ /dev/null
@@ -1,52 +0,0 @@
-# This valgrind suppressions file includes known Valgrind warnings in our
-# dependencies that cannot be fixed in-tree.
-#
-# Example use:
-# $ valgrind --suppressions=contrib/valgrind.supp build/bin/test_bitcoin
-# $ valgrind --suppressions=contrib/valgrind.supp --leak-check=full \
-#       --show-leak-kinds=all build/bin/test_bitcoin
-#
-# To create suppressions for found issues, use the --gen-suppressions=all option:
-# $ valgrind --suppressions=contrib/valgrind.supp --leak-check=full \
-#       --show-leak-kinds=all --gen-suppressions=all --show-reachable=yes \
-#       --error-limit=no build/bin/test_bitcoin
-#
-# Note that suppressions may depend on OS and/or library versions.
-# Tested on aarch64 and x86_64 with Ubuntu Noble system libs, using clang-16
-# and GCC, without gui.
-{
-   Suppress leaks on shutdown
-   Memcheck:Leak
-   ...
-   fun:_Z8ShutdownR11NodeContext
-}
-{
-   Suppress leveldb leak
-   Memcheck:Leak
-   match-leak-kinds: reachable
-   fun:_Znwm
-   ...
-   fun:_ZN7leveldb6DBImpl14BackgroundCallEv
-}
-{
-   Suppress leveldb leak
-   Memcheck:Leak
-   fun:_Znwm
-   ...
-   fun:GetCoin
-}
-{
-   Suppress LogInstance still reachable memory warning
-   Memcheck:Leak
-   match-leak-kinds: reachable
-   fun:_Znwm
-   fun:_Z11LogInstancev
-}
-{
-   Suppress BCLog::Logger::StartLogging() still reachable memory warning
-   Memcheck:Leak
-   match-leak-kinds: reachable
-   fun:malloc
-   ...
-   fun:_ZN5BCLog6Logger12StartLoggingEv
-}
diff --git a/doc/developer-notes.md b/doc/developer-notes.md
index 97ffc0cd..31ffd370 100644
--- a/doc/developer-notes.md
+++ b/doc/developer-notes.md
@@ -384,13 +384,13 @@ other input.
 
 Valgrind is a programming tool for memory debugging, memory leak detection, and
 profiling. The repo contains a Valgrind suppressions file
-([`valgrind.supp`](https://github.com/bitcoin/bitcoin/blob/master/contrib/valgrind.supp))
+([`valgrind.supp`](/test/sanitizer_suppressions/valgrind.supp))
 which includes known Valgrind warnings in our dependencies that cannot be fixed
 in-tree. Example use:
 
 ```shell
-$ valgrind --suppressions=contrib/valgrind.supp build/bin/test_bitcoin
-$ valgrind --suppressions=contrib/valgrind.supp --leak-check=full \
+$ valgrind --suppressions=test/sanitizer_suppressions/valgrind.supp build/bin/test_bitcoin
+$ valgrind --suppressions=test/sanitizer_suppressions/valgrind.supp --leak-check=full \
       --show-leak-kinds=all build/bin/test_bitcoin --log_level=test_suite
 $ valgrind -v --leak-check=full build/bin/bitcoind -printtoconsole
 $ ./build/test/functional/test_runner.py --valgrind
diff --git a/test/functional/test_framework/util.py b/test/functional/test_framework/util.py
index b9a76aef..d246a744 100644
--- a/test/functional/test_framework/util.py
+++ b/test/functional/test_framework/util.py
@@ -251,7 +251,7 @@ class Binaries:
     def __init__(self, paths, bin_dir, *, use_valgrind=False):
         self.paths = paths
         self.bin_dir = bin_dir
-        suppressions_file = pathlib.Path(__file__).resolve().parents[3] / "contrib" / "valgrind.supp"
+        suppressions_file = pathlib.Path(__file__).resolve().parents[3] / "test" / "sanitizer_suppressions" / "valgrind.supp"
         self.valgrind_cmd = [
             "valgrind",
             f"--suppressions={suppressions_file}",
diff --git a/test/sanitizer_suppressions/valgrind.supp b/test/sanitizer_suppressions/valgrind.supp
new file mode 100644
index 00000000..584cdcf7
--- /dev/null
+++ b/test/sanitizer_suppressions/valgrind.supp
@@ -0,0 +1,52 @@
+# This valgrind suppressions file includes known Valgrind warnings in our
+# dependencies that cannot be fixed in-tree.
+#
+# Example use:
+# $ valgrind --suppressions=test/sanitizer_suppressions/valgrind.supp build/bin/test_bitcoin
+# $ valgrind --suppressions=test/sanitizer_suppressions/valgrind.supp --leak-check=full \
+#       --show-leak-kinds=all build/bin/test_bitcoin
+#
+# To create suppressions for found issues, use the --gen-suppressions=all option:
+# $ valgrind --suppressions=test/sanitizer_suppressions/valgrind.supp --leak-check=full \
+#       --show-leak-kinds=all --gen-suppressions=all --show-reachable=yes \
+#       --error-limit=no build/bin/test_bitcoin
+#
+# Note that suppressions may depend on OS and/or library versions.
+# Tested on aarch64 and x86_64 with Ubuntu Noble system libs, using clang-16
+# and GCC, without gui.
+{
+   Suppress leaks on shutdown
+   Memcheck:Leak
+   ...
+   fun:_Z8ShutdownR11NodeContext
+}
+{
+   Suppress leveldb leak
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:_Znwm
+   ...
+   fun:_ZN7leveldb6DBImpl14BackgroundCallEv
+}
+{
+   Suppress leveldb leak
+   Memcheck:Leak
+   fun:_Znwm
+   ...
+   fun:GetCoin
+}
+{
+   Suppress LogInstance still reachable memory warning
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:_Znwm
+   fun:_Z11LogInstancev
+}
+{
+   Suppress BCLog::Logger::StartLogging() still reachable memory warning
+   Memcheck:Leak
+   match-leak-kinds: reachable
+   fun:malloc
+   ...
+   fun:_ZN5BCLog6Logger12StartLoggingEv
+}