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| author | H. Peter Anvin <hpa@zytor.com> | 2012-03-02 10:43:49 -0800 |
|---|---|---|
| committer | Markus Lehtonen <markus.lehtonen@linux.intel.com> | 2013-04-05 09:12:57 +0300 |
| commit | 028fc45832d45c2c32378b18bab92c9109be52cf (patch) | |
| tree | 1a9f6451e3bf9036527a2c41706240dcbaa5560d | |
| parent | c1cd1ad403adf86b2f7fe01a01d106656775a944 (diff) | |
| download | kernel-mfld-blackbay-028fc45832d45c2c32378b18bab92c9109be52cf.tar.gz kernel-mfld-blackbay-028fc45832d45c2c32378b18bab92c9109be52cf.tar.bz2 kernel-mfld-blackbay-028fc45832d45c2c32378b18bab92c9109be52cf.zip | |
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>
| -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 5150fd16ef9..686f37327a4 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); } |