linux-kernel - Re: [PATCH] checkpatch: add uninitialized pointer with _

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Message-ID: <aPiG_F5EBQUjZqsl@stanley.mountain>
Date: Wed, 22 Oct 2025 10:25:48 +0300
From: Dan Carpenter <dan.carpenter@...aro.org>
To: Ally Heev <allyheev@...il.com>
Cc: Dwaipayan Ray <dwaipayanray1@...il.com>,
	Lukas Bulwahn <lukas.bulwahn@...il.com>,
	Joe Perches <joe@...ches.com>, Jonathan Corbet <corbet@....net>,
	Andy Whitcroft <apw@...onical.com>, workflows@...r.kernel.org,
	linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
	David Hunter <david.hunter.linux@...il.com>,
	Shuah Khan <skhan@...uxfoundation.org>, linux-pm@...r.kernel.org,
	Viresh Kumar <vireshk@...nel.org>, Nishanth Menon <nm@...com>,
	Stephen Boyd <sboyd@...nel.org>
Subject: Re: [PATCH] checkpatch: add uninitialized pointer with __free
 attribute check

I made a list of the warnings this generates (on Monday's linux-next).

None of the warnings are real bugs.  Every single one of these has the
assignment as the first statement after the declaration block.  We have
had bugs because of this before but Smatch and (I think) Clang detect
them so they don't last for long.

regards,
dan carpenter

arch/powerpc/platforms/82xx/km82xx.c:30:
crypto/asymmetric_keys/x509_cert_parser.c:63:
crypto/asymmetric_keys/x509_public_key.c:151:
drivers/firmware/arm_scmi/shmem.c:199:
drivers/net/ethernet/intel/ice/ice_flow.c:1576:
drivers/net/ethernet/intel/idpf/idpf_virtchnl.c:1015:
drivers/net/ethernet/microsoft/mana/gdma_main.c:1508:
drivers/net/wireless/intel/iwlwifi/fw/uefi.c:821:
drivers/net/wireless/intel/iwlwifi/mld/d3.c:1788:
drivers/opp/core.c:1413:
drivers/opp/core.c:1480:
drivers/opp/core.c:1797:
drivers/opp/core.c:1888:
drivers/opp/core.c:2874:
drivers/opp/core.c:2935:
drivers/opp/core.c:2989:
drivers/opp/core.c:3065:
drivers/opp/core.c:3085:
drivers/opp/core.c:3104:
drivers/opp/core.c:312:
drivers/opp/core.c:330:
drivers/opp/core.c:412:
drivers/opp/core.c:450:
drivers/opp/core.c:608:
drivers/opp/cpu.c:157:
drivers/opp/cpu.c:204:
drivers/opp/cpu.c:59:
drivers/opp/of.c:1272:
drivers/opp/of.c:1331:
drivers/opp/of.c:1428:
drivers/opp/of.c:1469:
drivers/opp/of.c:149:
drivers/opp/of.c:1505:
drivers/opp/of.c:174:
drivers/opp/of.c:276:
drivers/opp/of.c:352:
drivers/opp/of.c:409:
drivers/opp/of.c:48:
drivers/opp/of.c:98:
drivers/scsi/scsi_debug.c:2964:
drivers/tee/qcomtee/call.c:648:
fs/overlayfs/params.c:451: