• NeilBrown's avatar
    md/raid10: Fix memory leak when raid10 reshape completes. · b3968552
    NeilBrown authored
    When a raid10 commences a resync/recovery/reshape it allocates
    some buffer space.
    When a resync/recovery completes the buffer space is freed.  But not
    when the reshape completes.
    This can result in a small memory leak.
    
    There is a subtle side-effect of this bug.  When a RAID10 is reshaped
    to a larger array (more devices), the reshape is immediately followed
    by a "resync" of the new space.  This "resync" will use the buffer
    space which was allocated for "reshape".  This can cause problems
    including a "BUG" in the SCSI layer.  So this is suitable for -stable.
    
    Cc: stable@vger.kernel.org (v3.5+)
    Fixes: 3ea7daa5Signed-off-by: default avatarNeilBrown <neilb@suse.de>
    b3968552
raid10.c 131 KB