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From: Dan Carpenter <dan.carpenter@linaro.org>
To: oe-kbuild@lists.linux.dev, Harry Austen <hpausten@protonmail.com>,
	Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Michal Simek <monstr@monstr.eu>
Cc: lkp@intel.com, oe-kbuild-all@lists.linux.dev,
	Shubhrajyoti Datta <shubhrajyoti.datta@amd.com>,
	linux-clk@vger.kernel.org, devicetree@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Harry Austen <hpausten@protonmail.com>
Subject: Re: [PATCH v4 2/2] clk: clocking-wizard: add user clock monitor support
Date: Thu, 19 Feb 2026 09:52:14 +0300	[thread overview]
Message-ID: <202602151704.qepyfVlc-lkp@intel.com> (raw)
In-Reply-To: <20260214180933.42143-3-hpausten@protonmail.com>

Hi Harry,

kernel test robot noticed the following build warnings:

url:    https://github.com/intel-lab-lkp/linux/commits/Harry-Austen/dt-bindings-clock-xilinx-add-description-of-user-monitor-interrupt/20260215-021554
base:   ea7282e99ead6d2a294cef40acd2a29ada3ab71d
patch link:    https://lore.kernel.org/r/20260214180933.42143-3-hpausten%40protonmail.com
patch subject: [PATCH v4 2/2] clk: clocking-wizard: add user clock monitor support
config: microblaze-randconfig-r072-20260215 (https://download.01.org/0day-ci/archive/20260215/202602151704.qepyfVlc-lkp@intel.com/config)
compiler: microblaze-linux-gcc (GCC) 14.3.0
smatch version: v0.5.0-8994-gd50c5a4c

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
| Closes: https://lore.kernel.org/r/202602151704.qepyfVlc-lkp@intel.com/

smatch warnings:
drivers/clk/xilinx/clk-xlnx-clock-wizard.c:1183 clk_wzrd_user_mon_work() error: dereferencing freed memory 'dump' (line 1182)

vim +/dump +1183 drivers/clk/xilinx/clk-xlnx-clock-wizard.c

68614f228e6cbe Harry Austen 2026-02-14  1176  static void clk_wzrd_user_mon_work(struct work_struct *work)
68614f228e6cbe Harry Austen 2026-02-14  1177  {
68614f228e6cbe Harry Austen 2026-02-14  1178  	struct clk_wzrd *clk_wzrd = container_of(work, struct clk_wzrd, work.work);
68614f228e6cbe Harry Austen 2026-02-14  1179  	u32 *dump = vmalloc(WZRD_NUM_DUMP_REGS * sizeof(*dump));
68614f228e6cbe Harry Austen 2026-02-14  1180  
68614f228e6cbe Harry Austen 2026-02-14  1181  	ioread32_rep(clk_wzrd->base, dump, WZRD_NUM_DUMP_REGS);
68614f228e6cbe Harry Austen 2026-02-14 @1182  	dev_coredumpv(&clk_wzrd->pdev->dev, dump, WZRD_NUM_DUMP_REGS * sizeof(*dump), GFP_KERNEL);
68614f228e6cbe Harry Austen 2026-02-14 @1183  	iowrite32(dump[WZRD_INTR_STATUS / sizeof(*dump)], clk_wzrd->base + WZRD_INTR_STATUS);
                                                          ^^^^
dev_coredumpv() can free dump.

68614f228e6cbe Harry Austen 2026-02-14  1184  }
68614f228e6cbe Harry Austen 2026-02-14  1185  
-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



  reply	other threads:[~2026-02-19  6:52 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-14 18:10 [PATCH v4 0/2] clk: clocking-wizard: add user clock monitor support Harry Austen
2026-02-14 18:10 ` [PATCH v4 1/2] dt-bindings: clock: xilinx: add description of user monitor interrupt Harry Austen
2026-02-14 20:39   ` Krzysztof Kozlowski
2026-02-14 20:57     ` Harry Austen
2026-02-14 20:59       ` Krzysztof Kozlowski
2026-02-14 21:09         ` Harry Austen
2026-02-15  8:45   ` Krzysztof Kozlowski
2026-02-14 18:10 ` [PATCH v4 2/2] clk: clocking-wizard: add user clock monitor support Harry Austen
2026-02-19  6:52   ` Dan Carpenter [this message]
2026-02-20 14:33     ` Harry Austen

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