On Sat, Oct 08, 2011 at 06:01:14PM -0700, Curt Wohlgemuth wrote: > In ext4_ext_next_allocated_block(), the path[depth] might > have a p_ext that is NULL -- see ext4_ext_binsearch(). In > such a case, dereferencing it will crash the machine. > > This patch checks for p_ext == NULL in > ext4_ext_next_allocated_block() before dereferencinging it. > > Tested using a hand-crafted an inode with eh_entries == 0 in > an extent block, verified that running FIEMAP on it crashes > without this patch, works fine with it. > > Signed-off-by: Curt Wohlgemuth <curtw@xxxxxxxxxx> Thanks, applied. - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
