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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-10-27 12:39:22 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2006-10-27 12:39:22 +0200
commit12bae23507129a7337378e6433bff6f8696bdb45 (patch)
treead28d5bcebf3aebe8926446a5d12418f62276b8a /arch/s390/kernel/compat_linux.c
parentc2b1449bd1fd73103ed5ff1a28d8f7cbc8a01b52 (diff)
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[S390] uaccess error handling.
Consider return values for all user space access function and return -EFAULT on error. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/compat_linux.c')
-rw-r--r--arch/s390/kernel/compat_linux.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index 2001767e1dc7..5b33f823863a 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -757,7 +757,9 @@ asmlinkage long sys32_sysctl(struct __sysctl_args32 __user *args)
put_user(oldlen, (u32 __user *)compat_ptr(tmp.oldlenp)))
error = -EFAULT;
}
- copy_to_user(args->__unused, tmp.__unused, sizeof(tmp.__unused));
+ if (copy_to_user(args->__unused, tmp.__unused,
+ sizeof(tmp.__unused)))
+ error = -EFAULT;
}
return error;
}