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Date: Tue, 6 Oct 2015 06:02:32 +0800
From: kbuild test robot <lkp@...el.com>
To: Benjamin Gaignard <benjamin.gaignard@...aro.org>
Cc: kbuild-all@...org, linux-media@...r.kernel.org,
linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org,
daniel.vetter@...ll.ch, robdclark@...il.com, treding@...dia.com,
sumit.semwal@...aro.org, tom.cooksey@....com,
daniel.stone@...labora.com, linux-security-module@...r.kernel.org,
xiaoquan.li@...antecorp.com, tom.gall@...aro.org,
linaro-mm-sig@...ts.linaro.org,
Benjamin Gaignard <benjamin.gaignard@...aro.org>
Subject: Re: [PATCH v4 1/2] create SMAF module
Hi Benjamin,
[auto build test ERROR on v4.3-rc4 -- if it's inappropriate base, please ignore]
config: s390-allmodconfig (attached as .config)
reproduce:
wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# save the attached .config to linux build tree
make.cross ARCH=s390
All error/warnings (new ones prefixed by >>):
In file included from arch/s390/include/asm/elf.h:130:0,
from include/linux/elf.h:4,
from include/linux/module.h:15,
from drivers/smaf/smaf-core.c:16:
drivers/smaf/smaf-core.c: In function 'smaf_unsecure_handle':
>> arch/s390/include/asm/mmu_context.h:33:41: error: expected identifier before 'do'
#define destroy_context(mm) do { } while (0)
^
>> drivers/smaf/smaf-core.c:136:23: note: in expansion of macro 'destroy_context'
if (smaf_dev.secure->destroy_context(handle->secure_ctx))
^
vim +/destroy_context +136 drivers/smaf/smaf-core.c
10 #include <linux/dma-buf.h>
11 #include <linux/dma-mapping.h>
12 #include <linux/fs.h>
13 #include <linux/ioctl.h>
14 #include <linux/list_sort.h>
15 #include <linux/miscdevice.h>
> 16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/smaf.h>
19 #include <linux/smaf-allocator.h>
20 #include <linux/smaf-secure.h>
21 #include <linux/uaccess.h>
22
23 struct smaf_handle {
24 struct dma_buf *dmabuf;
25 struct smaf_allocator *allocator;
26 struct dma_buf *db_alloc;
27 size_t length;
28 unsigned int flags;
29 int fd;
30 bool is_secure;
31 void *secure_ctx;
32 };
33
34 /**
35 * struct smaf_device - smaf device node private data
36 * @misc_dev: the misc device
37 * @head: list of allocator
38 * @lock: list and secure pointer mutex
39 * @secure: pointer to secure functions helpers
40 */
41 struct smaf_device {
42 struct miscdevice misc_dev;
43 struct list_head head;
44 /* list and secure pointer lock*/
45 struct mutex lock;
46 struct smaf_secure *secure;
47 };
48
49 static struct smaf_device smaf_dev;
50
51 /**
52 * smaf_allow_cpu_access return true if CPU can access to memory
53 * if their is no secure module associated to SMAF assume that CPU can get
54 * access to the memory.
55 */
56 static bool smaf_allow_cpu_access(struct smaf_handle *handle,
57 unsigned long flags)
58 {
59 if (!handle->is_secure)
60 return true;
61
62 if (!smaf_dev.secure)
63 return true;
64
65 if (!smaf_dev.secure->allow_cpu_access)
66 return true;
67
68 return smaf_dev.secure->allow_cpu_access(handle->secure_ctx, flags);
69 }
70
71 static int smaf_grant_access(struct smaf_handle *handle, struct device *dev,
72 dma_addr_t addr, size_t size,
73 enum dma_data_direction dir)
74 {
75 if (!handle->is_secure)
76 return 0;
77
78 if (!smaf_dev.secure)
79 return -EINVAL;
80
81 if (!smaf_dev.secure->grant_access)
82 return -EINVAL;
83
84 return smaf_dev.secure->grant_access(handle->secure_ctx,
85 dev, addr, size, dir);
86 }
87
88 static void smaf_revoke_access(struct smaf_handle *handle, struct device *dev,
89 dma_addr_t addr, size_t size,
90 enum dma_data_direction dir)
91 {
92 if (!handle->is_secure)
93 return;
94
95 if (!smaf_dev.secure)
96 return;
97
98 if (!smaf_dev.secure->revoke_access)
99 return;
100
101 smaf_dev.secure->revoke_access(handle->secure_ctx,
102 dev, addr, size, dir);
103 }
104
105 static int smaf_secure_handle(struct smaf_handle *handle)
106 {
107 if (handle->is_secure)
108 return 0;
109
110 if (!smaf_dev.secure)
111 return -EINVAL;
112
113 if (!smaf_dev.secure->create_context)
114 return -EINVAL;
115
116 handle->secure_ctx = smaf_dev.secure->create_context();
117
118 if (!handle->secure_ctx)
119 return -EINVAL;
120
121 handle->is_secure = true;
122 return 0;
123 }
124
125 static int smaf_unsecure_handle(struct smaf_handle *handle)
126 {
127 if (!handle->is_secure)
128 return 0;
129
130 if (!smaf_dev.secure)
131 return -EINVAL;
132
133 if (!smaf_dev.secure->destroy_context)
134 return -EINVAL;
135
> 136 if (smaf_dev.secure->destroy_context(handle->secure_ctx))
137 return -EINVAL;
138
139 handle->secure_ctx = NULL;
---
0-DAY kernel test infrastructure Open Source Technology Center
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