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Mon, 04 Nov 2024 10:34:37 -0800 (PST) Received: from Emma ([2401:4900:1c97:5a7:5054:ff:fe53:2787]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-2e92fc0087asm10185650a91.47.2024.11.04.10.34.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 04 Nov 2024 10:34:37 -0800 (PST) From: Karan Sanghavi Date: Mon, 04 Nov 2024 18:34:22 +0000 Subject: [PATCH] RAS/AMD/ATL: Fix unintended sign extension issue from coverity Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20241104-coverity1593397signextension-v1-1-4cfae6532140@gmail.com> X-B4-Tracking: v=1; b=H4sIAK0TKWcC/x3MQQ5AMBBA0avIrDUxRairiAU1mE0rrTRE3N2w/ Iv3b4gUmCJ02Q2BEkf2TgLzDOw2upUUz9KgC10hFpWyPok4LqxNWZom8uroPMh9UDWtNZO2Guc aQRZ7oIXPf98Pz/MC9+VVFm4AAAA= To: Yazen Ghannam , Tony Luck , Borislav Petkov Cc: linux-edac@vger.kernel.org, linux-kernel@vger.kernel.org, Shuah Khan , Karan Sanghavi X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; a=ed25519-sha256; t=1730745275; l=982; i=karansanghvi98@gmail.com; s=20241017; h=from:subject:message-id; bh=xkyANICZW1kiYDTrWIyd8eKXgxkDF0Yd/a8mxZXj8eI=; b=J+UQsh270gZBqOES8cP2KldJBwUtaVzLqyCZP1sWXO0af9CUOG5szgduspOIB1rL2pB0BcOlV dtyFT3uNR3RBkqiB1vnM/sfgmXz+gp+Hk67XzU50pyd9uWJOAh8DHcg X-Developer-Key: i=karansanghvi98@gmail.com; a=ed25519; pk=UAcbefT1C06npNVDJHdgpPqTm4WE9IhaA1fmJb3A37Y= Explicit cast pc to u32 to avoid sign extension while left shift Issue reported by coverity with CID: 1593397 Signed-off-by: Karan Sanghavi --- Coverity Link:=20 https://scan7.scan.coverity.com/#/project-view/51975/11354?selectedIssue=3D= 1593397 --- drivers/ras/amd/atl/umc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/ras/amd/atl/umc.c b/drivers/ras/amd/atl/umc.c index dc8aa12f63c8..916c867faaf8 100644 --- a/drivers/ras/amd/atl/umc.c +++ b/drivers/ras/amd/atl/umc.c @@ -293,7 +293,7 @@ static unsigned long convert_dram_to_norm_addr_mi300(un= signed long addr) } =20 /* PC bit */ - addr |=3D pc << bit_shifts.pc; + addr |=3D (u32)pc << bit_shifts.pc; =20 /* SID bits */ for (i =3D 0; i < NUM_SID_BITS; i++) { --- base-commit: 81983758430957d9a5cb3333fe324fd70cf63e7e change-id: 20241104-coverity1593397signextension-78c9b2c21d51 Best regards, --=20 Karan Sanghavi