On Wed, Sep 04, 2024 at 11:00:08AM -0600, Bob Beck wrote: > CVSROOT: /cvs > Module name: src > Changes by: [email protected] 2024/09/04 11:00:08 > > Modified files: > sys/ufs/ufs : ufs_ihash.c > > Log message: > Work around vnode reuse bug resulting in a panic: vop_generic_badop > > Joel hit this frequently on the go builder, and this was > also found by szykiller > > https://syzkaller.appspot.com/bug?extid=58bdde9f7a1a407514a7 > https://syzkaller.appspot.com/bug?extid=5779bc64fc4fdd0a5140 > > This is based on a workaround originally done by visa@ and mbuhl@ > but not committed or widely distributed. > > Realistically this should be fixed more like the previous attempt > with vdoom, but my attempts to do this at the moment are colliding > with finding all sources of similar races, now that kernel unlocking > is exposing these previously existing bugs > > for now, let's put in this ugly workaround > > ok deraadt@
This causes regress/sys/fileops/ext2 to hang, I haven't made further progress to see if other filesystems are also affected. Looks like the thread is stuck in the kernel inside this new loop.
