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| author | H. Peter Anvin <hpa@zytor.com> | 2012-03-02 10:43:49 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-03-12 10:32:42 -0700 |
| commit | 4b77339222a1d8809cde5d8920714a6cd180e5e0 (patch) | |
| tree | 561274eeed0270ff77bc73b52144aa24d05c6d07 /include | |
| parent | ec521c173fe9b56343808dfde63e3d75b223da07 (diff) | |
| download | kernel_samsung_smdk4412-4b77339222a1d8809cde5d8920714a6cd180e5e0.zip kernel_samsung_smdk4412-4b77339222a1d8809cde5d8920714a6cd180e5e0.tar.gz kernel_samsung_smdk4412-4b77339222a1d8809cde5d8920714a6cd180e5e0.tar.bz2 | |
regset: Return -EFAULT, not -EIO, on host-side memory fault
commit 5189fa19a4b2b4c3bec37c3a019d446148827717 upstream.
There is only one error code to return for a bad user-space buffer
pointer passed to a system call in the same address space as the
system call is executed, and that is EFAULT. Furthermore, the
low-level access routines, which catch most of the faults, return
EFAULT already.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@hack.frob.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/regset.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/linux/regset.h b/include/linux/regset.h index 5150fd1..686f373 100644 --- a/include/linux/regset.h +++ b/include/linux/regset.h @@ -339,7 +339,7 @@ static inline int copy_regset_to_user(struct task_struct *target, return -EOPNOTSUPP; if (!access_ok(VERIFY_WRITE, data, size)) - return -EIO; + return -EFAULT; return regset->get(target, regset, offset, size, NULL, data); } @@ -365,7 +365,7 @@ static inline int copy_regset_from_user(struct task_struct *target, return -EOPNOTSUPP; if (!access_ok(VERIFY_READ, data, size)) - return -EIO; + return -EFAULT; return regset->set(target, regset, offset, size, NULL, data); } |