Hi, As reported by Thorsten Knabe <linux@xxxxxxxxxxxxxxxxx>. commit 4f4fd7c5798b ("Don't jump to compute_result state from check_result state") was back ported to v3.16+. However, this fix was wrong. Please back port the following two commits to fix this issue. commit a25d8c327bb4 ("Revert "Don't jump to compute_result state from check_result state"") commit b2176a1dfb51 ("md/raid: raid5 preserve the writeback action after the parity check") Thanks, Song