On Wed, Nov 01, 2006 at 11:57:48AM +0100, Ulrich Spoerlein wrote: > I grepped /sys for DEBUG_VFS_LOCKS and it seems to only add some > additional KASSERTs, but not the one which triggered in the original > panic. > > Nullfs seems more fragile than I initially thought ...
It's just that compiling in the extra debugging (it might be DEBUG_LOCKS or DEBUG_VFS_LOCKS, I forget which), causes the sizes of structures to change, so when the module tries to fondle the structure at a certain offset thinking it's accessing a certain field, it's really fondling something else entirely and the kernel gets a nasty surprise and panics. Kris
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