AcoSail/kernel_optimize_test
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fat_dir_ioctl(): hadn't needed that access_ok() for more than a decade...

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address is passed only to put_user() and copy_to_user()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2020-02-18 23:05:39 -05:00
parent 37d59a5148
commit f06d3a7e6e
1 changed files with 0 additions and 4 deletions
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4
fs/fat/dir.c
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@ -804,8 +804,6 @@ static long fat_dir_ioctl(struct file *filp, unsigned int cmd,
return fat_generic_ioctl(filp, cmd, arg);
}
if (!access_ok(d1, sizeof(struct __fat_dirent[2])))
return -EFAULT;
/*
* Yes, we don't need this put_user() absolutely. However old
* code didn't return the right value. So, app use this value,
@ -844,8 +842,6 @@ static long fat_compat_dir_ioctl(struct file *filp, unsigned cmd,
return fat_generic_ioctl(filp, cmd, (unsigned long)arg);
}
if (!access_ok(d1, sizeof(struct compat_dirent[2])))
return -EFAULT;
/*
* Yes, we don't need this put_user() absolutely. However old
* code didn't return the right value. So, app use this value,