Hi Alexander, On 2024-04-04 at 14:05:12 +0200, Alexander Wetzel wrote: > On 04.04.24 12:57, Pengfei Xu wrote: > > cc Alexander Wetzel, > > > > I used syzkaller and found the similar problem. > > > > And bisected and found the related commit: > > 27f58c04a8f4 scsi: sg: Avoid sg device teardown race > > Reverted the commit on top of v6.9-rc2, this issue was gone. > > There were now multiple reports about the issue. The first (main) discussion > and fix is here: > https://lore.kernel.org/all/20240401191038.18359-1-Alexander@xxxxxxxxxxxxxx/ > > In a nutshell: > The new WARN_ON_ONCE() was a (very) stupid idea and must be undone. > It's ok to just drop the line with the WARN_ON_ONCE(). The rest of the > proposed patch fixes a much less urgent issue. Got it, thanks for your description! > > Of course I can also break the fix into two patches, when this speeds up the > merge... Thank you, if it makes sense and accelerates the merge process. Best Regards, Thanks1 > > Alexander