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5538213436
Currently Sparse warns the following when compiling kernel/capability.c:
kernel/capability.c:191:35: warning: incorrect type in argument 2
(different address spaces)
kernel/capability.c:191:35: expected void const *from
kernel/capability.c:191:35: got struct __user_cap_data_struct
[noderef] __user *
kernel/capability.c:168:14: warning: dereference of noderef expression
...... (multiple noderef warnings on different locations)
kernel/capability.c:244:29: warning: incorrect type in argument 1
(different address spaces)
kernel/capability.c:244:29: expected void *to
kernel/capability.c:244:29: got struct __user_cap_data_struct
[noderef] __user ( * )[2]
kernel/capability.c:247:42: warning: dereference of noderef expression
...... (multiple noderef warnings on different locations)
It seems that defining `struct __user_cap_data_struct` together with
`cap_user_data_t` make Sparse believe that the struct is `noderef` as
well. Separate their definitions to clarify their respective attributes.
Signed-off-by: GONG, Ruiqi <gongruiqi@huaweicloud.com>
Acked-by: Serge Hallyn <serge@hallyn.com>
[PM: wrapped long lines in the description]
Signed-off-by: Paul Moore <paul@paul-moore.com>
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