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staging/lustre: Declare lprocfs_write_frac_u64_helper argument as __user

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The buffer that lprocfs_write_frac_u64_helper is working on is
presumed to be a userspace one, so it's not suitable for use
on kernel buffers.

Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oleg Drokin 2016-01-03 12:05:45 -05:00 • committed by Greg Kroah-Hartman
commit cadffe60ea
2 changed files with 3 additions and 3 deletions
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2
drivers/staging/lustre/lustre/include/lprocfs_status.h
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@ -608,7 +608,7 @@ int lprocfs_write_helper(const char __user *buffer, unsigned long count,
int *val);
int lprocfs_write_u64_helper(const char __user *buffer,
unsigned long count, __u64 *val);
int lprocfs_write_frac_u64_helper(const char *buffer,
int lprocfs_write_frac_u64_helper(const char __user *buffer,
unsigned long count,
__u64 *val, int mult);
char *lprocfs_find_named_value(const char *buffer, const char *name,

4
drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
View file

@ -1319,8 +1319,8 @@ int lprocfs_write_u64_helper(const char __user *buffer, unsigned long count,
}
EXPORT_SYMBOL(lprocfs_write_u64_helper);
int lprocfs_write_frac_u64_helper(const char *buffer, unsigned long count,
__u64 *val, int mult)
int lprocfs_write_frac_u64_helper(const char __user *buffer,
unsigned long count, __u64 *val, int mult)
{
char kernbuf[22], *end, *pbuf;
__u64 whole, frac = 0, units;