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.
Of course I can also break the fix into two patches, when this speeds up
the merge...
Alexander
