2.6.27-stable review patch. If anyone has any objections, please let us know. ------------------ From: Greg Kroah-Hartman commit 4503efd0891c40e30928afb4b23dc3f99c62a6b2 upstream. Some sysfs binary files don't like having 0 passed to them as a size. Fix this up at the root by just returning to the vfs if userspace asks us for a zero sized buffer. Thanks to Pavel Roskin for pointing this out. Reported-by: Pavel Roskin Signed-off-by: Greg Kroah-Hartman --- fs/sysfs/bin.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/fs/sysfs/bin.c +++ b/fs/sysfs/bin.c @@ -62,6 +62,9 @@ read(struct file *file, char __user *use loff_t offs = *off; int count = min_t(size_t, bytes, PAGE_SIZE); + if (!bytes) + return 0; + if (size) { if (offs > size) return 0; @@ -119,6 +122,9 @@ static ssize_t write(struct file *file, loff_t offs = *off; int count = min_t(size_t, bytes, PAGE_SIZE); + if (!bytes) + return 0; + if (size) { if (offs > size) return 0; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/