[PATCH v2 1/1] powerpc: fix a memory leak
kernel test robot
lkp at intel.com
Wed Nov 8 20:24:04 AEDT 2023
Hi Yuanjun,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.6 next-20231108]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Yuanjun-Gong/powerpc-fix-a-memory-leak/20230915-100832
base: linus/master
patch link: https://lore.kernel.org/r/20230915020559.3396566-1-ruc_gongyuanjun%40163.com
patch subject: [PATCH v2 1/1] powerpc: fix a memory leak
config: powerpc-allyesconfig (https://download.01.org/0day-ci/archive/20231108/202311081645.j68Cla77-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231108/202311081645.j68Cla77-lkp@intel.com/reproduce)
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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202311081645.j68Cla77-lkp@intel.com/
All errors (new ones prefixed by >>):
>> arch/powerpc/platforms/powernv/vas.c:105:15: error: expected ';' after expression
105 | rc = -ENODEV
| ^
| ;
1 error generated.
vim +105 arch/powerpc/platforms/powernv/vas.c
49
50 static int init_vas_instance(struct platform_device *pdev)
51 {
52 struct device_node *dn = pdev->dev.of_node;
53 struct vas_instance *vinst;
54 struct xive_irq_data *xd;
55 uint32_t chipid, hwirq;
56 struct resource *res;
57 int rc, cpu, vasid;
58
59 rc = of_property_read_u32(dn, "ibm,vas-id", &vasid);
60 if (rc) {
61 pr_err("No ibm,vas-id property for %s?\n", pdev->name);
62 return -ENODEV;
63 }
64
65 rc = of_property_read_u32(dn, "ibm,chip-id", &chipid);
66 if (rc) {
67 pr_err("No ibm,chip-id property for %s?\n", pdev->name);
68 return -ENODEV;
69 }
70
71 if (pdev->num_resources != 4) {
72 pr_err("Unexpected DT configuration for [%s, %d]\n",
73 pdev->name, vasid);
74 return -ENODEV;
75 }
76
77 vinst = kzalloc(sizeof(*vinst), GFP_KERNEL);
78 if (!vinst)
79 return -ENOMEM;
80
81 vinst->name = kasprintf(GFP_KERNEL, "vas-%d", vasid);
82 if (!vinst->name) {
83 kfree(vinst);
84 return -ENOMEM;
85 }
86
87 INIT_LIST_HEAD(&vinst->node);
88 ida_init(&vinst->ida);
89 mutex_init(&vinst->mutex);
90 vinst->vas_id = vasid;
91 vinst->pdev = pdev;
92
93 res = &pdev->resource[0];
94 vinst->hvwc_bar_start = res->start;
95
96 res = &pdev->resource[1];
97 vinst->uwc_bar_start = res->start;
98
99 res = &pdev->resource[2];
100 vinst->paste_base_addr = res->start;
101
102 res = &pdev->resource[3];
103 if (res->end > 62) {
104 pr_err("Bad 'paste_win_id_shift' in DT, %llx\n", res->end);
> 105 rc = -ENODEV
106 goto free_vinst;
107 }
108
109 vinst->paste_win_id_shift = 63 - res->end;
110
111 hwirq = xive_native_alloc_irq_on_chip(chipid);
112 if (!hwirq) {
113 pr_err("Inst%d: Unable to allocate global irq for chip %d\n",
114 vinst->vas_id, chipid);
115 rc = -ENOENT;
116 goto free_vinst;
117 }
118
119 vinst->virq = irq_create_mapping(NULL, hwirq);
120 if (!vinst->virq) {
121 pr_err("Inst%d: Unable to map global irq %d\n",
122 vinst->vas_id, hwirq);
123 rc = -EINVAL;
124 goto free_vinst;
125 }
126
127 xd = irq_get_handler_data(vinst->virq);
128 if (!xd) {
129 pr_err("Inst%d: Invalid virq %d\n",
130 vinst->vas_id, vinst->virq);
131 rc = -EINVAL;
132 goto free_vinst;
133 }
134
135 vinst->irq_port = xd->trig_page;
136 pr_devel("Initialized instance [%s, %d] paste_base 0x%llx paste_win_id_shift 0x%llx IRQ %d Port 0x%llx\n",
137 pdev->name, vasid, vinst->paste_base_addr,
138 vinst->paste_win_id_shift, vinst->virq,
139 vinst->irq_port);
140
141 for_each_possible_cpu(cpu) {
142 if (cpu_to_chip_id(cpu) == of_get_ibm_chip_id(dn))
143 per_cpu(cpu_vas_id, cpu) = vasid;
144 }
145
146 mutex_lock(&vas_mutex);
147 list_add(&vinst->node, &vas_instances);
148 mutex_unlock(&vas_mutex);
149
150 spin_lock_init(&vinst->fault_lock);
151 /*
152 * IRQ and fault handling setup is needed only for user space
153 * send windows.
154 */
155 if (vinst->virq) {
156 rc = vas_irq_fault_window_setup(vinst);
157 /*
158 * Fault window is used only for user space send windows.
159 * So if vinst->virq is NULL, tx_win_open returns -ENODEV
160 * for user space.
161 */
162 if (rc)
163 vinst->virq = 0;
164 }
165
166 vas_instance_init_dbgdir(vinst);
167
168 dev_set_drvdata(&pdev->dev, vinst);
169
170 return 0;
171
172 free_vinst:
173 kfree(vinst->name);
174 kfree(vinst);
175 return rc;
176
--
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