On Mon, Sep 04, 2023 at 11:45:03AM +1000, Dave Chinner wrote: > Entirely possible - this is syzbot we are talking about here. > Especially if reiser or ntfs has been tested back before the logs we > have start, as both are known to corrupt memory and/or leak locks > when trying to parse corrupt filesystem images that syzbot feeds > them. That's why we largely ignore syzbot reports that involve > those filesystems... > > Unfortunately, the logs from what was being done around when the > tasks actually hung are long gone (seems like only the last 20-30s > of log activity is reported) so when the hung task timer goes off > at 143s, there is nothing left to tell us what might have caused it. > > IOWs, it's entirely possible that it is a memory corruption that > has resulted in a leaked lock somewhere... ... and this is why I ignore any syzbot report that doesn't have a C reproducer. Life is too short to waste time with what is very likely syzbot noise.... And I'd much rather opt out of the gamification of syzbot dashboards designed to use dark patterns to guilt developers to work on "issues" that very likely have no real impact on real life actual user impact, if it might cause developers and maintainers to burn out and quit. Basically, if syzbot won't prioritize things for us, it's encumbent on us to prioritize things for our own mental health. And so syzbot issues without a real reproducer are very low on my priority list; I have things I can work on that are much more likely to make real world impact. Even ones that have a real reproducer, there are certain classes of bugs (e.g., "locking bugs" that require a badly corrupted file system, or things that are just denial of service attacks if you're too stupid to insert a USB thumb drive found in a parking lock --- made worse by GNOME who has decided to default mount any random USB thumb drive inserted into a system, even a server system that has GNOME installed, thanks to some idiotic decision made by some random Red Hat product manager), that I just ignore because I don't have infinite amounts of time to coddle stupid Red Hat distro tricks. - Ted
