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Date: Tue, 16 May 2023 16:45:20 +0800
From: kernel test robot <lkp@...el.com>
To: Brad Larson <blarson@....com>, linux-arm-kernel@...ts.infradead.org
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
linux-mmc@...r.kernel.org, linux-spi@...r.kernel.org,
adrian.hunter@...el.com, alcooperx@...il.com,
andy.shevchenko@...il.com, arnd@...db.de, blarson@....com,
brendan.higgins@...ux.dev, briannorris@...omium.org,
catalin.marinas@....com, conor+dt@...nel.org, davidgow@...gle.com,
gsomlo@...il.com, gerg@...ux-m68k.org, hal.feng@...rfivetech.com,
hasegawa-hitomi@...itsu.com, j.neuschaefer@....net, joel@....id.au,
kernel@...il.dk, krzk@...nel.org,
krzysztof.kozlowski+dt@...aro.org, lee@...nel.org,
lee.jones@...aro.org, broonie@...nel.org, p.zabel@...gutronix.de,
rdunlap@...radead.org, robh+dt@...nel.org, samuel@...lland.org
Subject: Re: [PATCH v14 8/8] soc: amd: Add support for AMD Pensando SoC
Controller
Hi Brad,
kernel test robot noticed the following build warnings:
[auto build test WARNING on e922ba281a8d84f640d8c8e18a385d032c19e185]
url: https://github.com/intel-lab-lkp/linux/commits/Brad-Larson/dt-bindings-arm-add-AMD-Pensando-boards/20230516-032312
base: e922ba281a8d84f640d8c8e18a385d032c19e185
patch link: https://lore.kernel.org/r/20230515181606.65953-9-blarson%40amd.com
patch subject: [PATCH v14 8/8] soc: amd: Add support for AMD Pensando SoC Controller
config: sh-allmodconfig (https://download.01.org/0day-ci/archive/20230516/202305161642.PZQ4S8o2-lkp@intel.com/config)
compiler: sh4-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/48a90df35083d2f3788e171ff0af01ddc8cd871b
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review Brad-Larson/dt-bindings-arm-add-AMD-Pensando-boards/20230516-032312
git checkout 48a90df35083d2f3788e171ff0af01ddc8cd871b
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=sh SHELL=/bin/bash drivers/soc/amd/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202305161642.PZQ4S8o2-lkp@intel.com/
All warnings (new ones prefixed by >>):
drivers/soc/amd/pensando-ctrl.c: In function 'penctrl_ioctl':
>> drivers/soc/amd/pensando-ctrl.c:91:36: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
91 | if (copy_from_user(tx_buf, (void __user *)msg->tx_buf, msg->len)) {
| ^
drivers/soc/amd/pensando-ctrl.c:114:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
114 | if (copy_to_user((void __user *)msg->rx_buf, rx_buf, msg->len))
| ^
vim +91 drivers/soc/amd/pensando-ctrl.c
34
35 static long
36 penctrl_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
37 {
38 void __user *in_arg = (void __user *)arg;
39 struct penctrl_device *penctrl;
40 u8 tx_buf[PENCTRL_MAX_MSG_LEN];
41 u8 rx_buf[PENCTRL_MAX_MSG_LEN];
42 struct spi_transfer t[2] = {};
43 struct penctrl_spi_xfer *msg;
44 struct spi_device *spi;
45 unsigned int num_msgs;
46 struct spi_message m;
47 u32 size;
48 int ret;
49
50 /* Check for a valid command */
51 if (_IOC_TYPE(cmd) != PENCTRL_IOC_MAGIC)
52 return -ENOTTY;
53
54 if (_IOC_NR(cmd) > PENCTRL_IOC_MAXNR)
55 return -ENOTTY;
56
57 if (((_IOC_DIR(cmd) & _IOC_READ)) && !access_ok(in_arg, _IOC_SIZE(cmd)))
58 return -EFAULT;
59
60 if (((_IOC_DIR(cmd) & _IOC_WRITE)) && !access_ok(in_arg, _IOC_SIZE(cmd)))
61 return -EFAULT;
62
63 /* Get a reference to the SPI device */
64 penctrl = filp->private_data;
65 if (!penctrl)
66 return -ESHUTDOWN;
67
68 spi = spi_dev_get(penctrl->spi);
69 if (!spi)
70 return -ESHUTDOWN;
71
72 /* Verify and prepare SPI message */
73 size = _IOC_SIZE(cmd);
74 num_msgs = size / sizeof(struct penctrl_spi_xfer);
75 if (num_msgs > 2 || size == 0 || size % sizeof(struct penctrl_spi_xfer)) {
76 ret = -EINVAL;
77 goto out_unlock;
78 }
79 msg = memdup_user((struct penctrl_spi_xfer *)arg, size);
80 if (IS_ERR(msg)) {
81 ret = PTR_ERR(msg);
82 goto out_unlock;
83 }
84 if (msg->len > PENCTRL_MAX_MSG_LEN) {
85 ret = -EINVAL;
86 goto out_unlock;
87 }
88
89 t[0].tx_buf = tx_buf;
90 t[0].len = msg->len;
> 91 if (copy_from_user(tx_buf, (void __user *)msg->tx_buf, msg->len)) {
92 ret = -EFAULT;
93 goto out_unlock;
94 }
95 if (num_msgs > 1) {
96 msg++;
97 if (msg->len > PENCTRL_MAX_MSG_LEN) {
98 ret = -EINVAL;
99 goto out_unlock;
100 }
101 t[1].rx_buf = rx_buf;
102 t[1].len = msg->len;
103 }
104 spi_message_init_with_transfers(&m, t, num_msgs);
105
106 /* Perform the transfer */
107 mutex_lock(&spi_lock);
108 ret = spi_sync(spi, &m);
109 mutex_unlock(&spi_lock);
110
111 if (ret || (num_msgs == 1))
112 goto out_unlock;
113
114 if (copy_to_user((void __user *)msg->rx_buf, rx_buf, msg->len))
115 ret = -EFAULT;
116
117 out_unlock:
118 spi_dev_put(spi);
119 return ret;
120 }
121
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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