On 2020-10-29 15:08:06 [+0200], Mathias Nyman wrote: > Sebastian, I think you might be missing the first mail in this thread. thank you for clearing that up. > https://lore.kernel.org/linux-usb/20201028203124.375344-4-mathias.nyman@xxxxxxxxxxxxxxx/ > > Let me do a quick recap to avoid confusion here. So far we have 2 issues. > > 1. Lockdep issue #1, stream debugfs entry created with local interrupts disabled and xhci->lock held > Cause: 673d74683627b ("usb: xhci: add debugfs support for ep with stream") in v5.10-rc1 > Fix: [PATCH 3/3] xhci: Don't create stream debugfs files with spinlock held. (i.e. the mail we are replying to) > Comment: easily reproduced, enable lockdep and uas, mount debugfs and connect a UAS device. > discovered by both Hans and Mike > . > 2. Lockdep issue #2, adding entries to radix tree during (stream) ring expansion with interrupts disabled and xhci->lock held. > Cause: unknown, probably a patch since we started using radix trees for finding streams > Fix: unknown. > Comment: Discovered by Mike when testing fix for issue#1. I suspect it can be reproduced on 5.9 but is > probably really hard as it involves ring expansion. > > -Mathias Sebastian
