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authorStephen Boyd <sboyd@codeaurora.org>2011-05-12 16:50:07 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2011-05-13 16:15:35 -0700
commitc42d2237143fcf35cff642cefe2bcf7786aae312 (patch)
tree24fb14faa42a47650567708f98fe035186721427 /fs/debugfs
parent82a3242e11d9e63c8195be46c954efaefee35e22 (diff)
downloadlinux-c42d2237143fcf35cff642cefe2bcf7786aae312.tar.gz
debugfs: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
warning:

In file included from arch/x86/include/asm/uaccess.h:573,
                 from include/linux/uaccess.h:5,
                 from include/linux/highmem.h:7,
                 from include/linux/pagemap.h:10,
                 from fs/debugfs/file.c:18:
In function 'copy_from_user',
    inlined from 'write_file_bool' at fs/debugfs/file.c:435:
arch/x86/include/asm/uaccess_64.h:65: warning: call to
'copy_from_user_overflow' declared with attribute warning:
copy_from_user() buffer size is not provably correct

presumably due to buf_size being signed causing GCC to fail to
see that buf_size can't become negative.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs/debugfs')
-rw-r--r--fs/debugfs/file.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/debugfs/file.c b/fs/debugfs/file.c
index 568304d058a3..90f76575c056 100644
--- a/fs/debugfs/file.c
+++ b/fs/debugfs/file.c
@@ -428,7 +428,7 @@ static ssize_t write_file_bool(struct file *file, const char __user *user_buf,
 			       size_t count, loff_t *ppos)
 {
 	char buf[32];
-	int buf_size;
+	size_t buf_size;
 	bool bv;
 	u32 *val = file->private_data;