> Dan, could you please run the test on this branch > (83cbdaf61b1ab9cdaa0321eeea734bc70ca069c8)? I'm sorry to report that I can still reproduce the problem running the kernel built from the md-6.9 branch (83cbdaf61b1a). But the only commit I see on that branch that's not in master and touches raid5.c is this one: test@sysrescue:~/src/linux$ git log master..song/md-6.9 drivers/md/raid5.c commit 61c90765e131e63ead773b9b99167415e246a945 Author: Yu Kuai <yukuai3@xxxxxxxxxx> Date: Thu Dec 28 20:55:51 2023 +0800 md: remove redundant check of 'mddev->sync_thread' Is that expected, or were you expecting additional fixes to be in there? -- Dan