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([110.9.142.4]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c866325d1d3sm6505293a12.11.2026.06.14.09.15.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 Jun 2026 09:15:47 -0700 (PDT) From: Sang-Heon Jeon To: Rob Herring , Saravana Kannan , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer Cc: devicetree@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, Sang-Heon Jeon Subject: [PATCH 1/3] of/fdt: fix misleading elfcorehdr reservation success message Date: Mon, 15 Jun 2026 01:15:01 +0900 Message-ID: <20260614161503.2219681-2-ekffu200098@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260614161503.2219681-1-ekffu200098@gmail.com> References: <20260614161503.2219681-1-ekffu200098@gmail.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit fdt_reserve_elfcorehdr() does not check the return value of memblock_reserve(), so a success message is falsely printed when the reservation fails. Check the return value and warn on failure instead. Signed-off-by: Sang-Heon Jeon --- drivers/of/fdt.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 26f66046cc32..d985c07d7c5c 100644 --- a/drivers/of/fdt.c +++ b/drivers/of/fdt.c @@ -479,7 +479,10 @@ static void __init fdt_reserve_elfcorehdr(void) return; } - memblock_reserve(elfcorehdr_addr, elfcorehdr_size); + if (memblock_reserve(elfcorehdr_addr, elfcorehdr_size)) { + pr_warn("Failed to reserve memory for elfcorehdr\n"); + return; + } pr_info("Reserving %llu KiB of memory at 0x%llx for elfcorehdr\n", elfcorehdr_size >> 10, elfcorehdr_addr); -- 2.43.0