Hello Ming, Eric, Am 26.03.2016 um 16:40 schrieb Ming Lei:
From the trace, looks the bio returned from bio_clone_mddev() is NULL, and maybe the source bio is buggy, something like the attached patch might be helpful, could you apply the attached debug patch, reproduce and post the log?
I was able to reproduce it on a non-productive system, but only after copying the bcache superblocks/partition starts from the original system, with new created ones it worked fine.
Full trace and check_bio output can be found here: http://pastebin.com/ngvGGHBZ Sebastian -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
