On Thu, Jun 30, 2016 at 08:49:34AM -0400, Brian Foster wrote: > XFS has a bug where directory readahead completions can occur after > unmount. This can lead to a crash or panic because metadata read > verification attempts to access core XFS data structures (e.g., the log) > after they have been freed and certain pointers have been reset. > > Add a test that triggers directory readahead, delays the readahead I/O > and immediately unmounts the filesystem. This test is part of the > dangerous group as it will cause kernels affected by the bug to crash. ..... > + > +# create a directory large enough for extent format > +mkdir $SCRATCH_MNT/dir > +for i in $(seq 0 999); do > + touch $SCRATCH_MNT/dir/$i > +done minor quibble - what's an "extent format" directory? I think you mean a directory inode whose data fork is in extent or btree format, not inline. i.e. not a short-form directory, but rather a block, leaf or node format directory. Yeah, I'm being pedantic, but we should use the correct terminology so when someone reads it in 5 years time.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe fstests" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
