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[77.7.4.134]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4995e9f0230sm118673445e9.6.2026.08.08.05.37.34 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Sat, 08 Aug 2026 05:37:34 -0700 (PDT) From: Karl Mehltretter To: Andrew Morton Cc: Karl Mehltretter , Wei Yang , linux-kernel@vger.kernel.org, llvm@lists.linux.dev Subject: [PATCH] lib/interval_tree: fix allocation warning messages Date: Sat, 8 Aug 2026 14:36:08 +0200 Message-Id: <20260808123608.73613-1-kmehltretter@gmail.com> X-Mailer: git-send-email 2.39.5 (Apple Git-154) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" WARN_ON_ONCE() takes a condition, not a message. The string literals are always true, so the warnings still trigger but the messages are never printed. Use WARN_ONCE(1, ...) instead to print the messages and keep the once-only behavior. Found with a Coccinelle script. Clang's -Wstring-conversion also flags such calls but is not enabled in kernel builds. Fixes: 82114e45131f ("lib/interval_tree: add test case for interval_tree_it= er_xxx() helpers") Assisted-by: Claude:claude-fable-5 coccinelle Signed-off-by: Karl Mehltretter Reviewed-by: Wei Yang --- lib/interval_tree_test.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/lib/interval_tree_test.c b/lib/interval_tree_test.c index eba2d3e28980..b0b07270ce7c 100644 --- a/lib/interval_tree_test.c +++ b/lib/interval_tree_test.c @@ -140,13 +140,13 @@ static int intersection_range_check(void) =20 intxn1 =3D bitmap_alloc(nnodes, GFP_KERNEL); if (!intxn1) { - WARN_ON_ONCE("Failed to allocate intxn1\n"); + WARN_ONCE(1, "Failed to allocate intxn1\n"); return -ENOMEM; } =20 intxn2 =3D bitmap_alloc(nnodes, GFP_KERNEL); if (!intxn2) { - WARN_ON_ONCE("Failed to allocate intxn2\n"); + WARN_ONCE(1, "Failed to allocate intxn2\n"); bitmap_free(intxn1); return -ENOMEM; } --=20 2.39.5 (Apple Git-154)