On Fri, 2007-10-05 at 07:54 -0700, Badari Pulavarty wrote: > On Fri, 2007-10-05 at 15:41 +0200, Valerie Clement wrote: > > Badari Pulavarty wrote: > > > On Thu, 2007-10-04 at 18:13 +0200, Valerie Clement wrote: > > >> While running ffsb tests on my ext4 filesystem, I got an Oops in > > >> cache_alloc_refill(). > > >> I turned on SLAB debugging and here is the message I got: > > >> > > >> slab: Internal list corruption detected in cache 'buffer_head'(30), > > >> slabp ffff81007e100100(1515870810). Hexdump: > > > > > > slabp->inuse = 1515870810 looks bogus. Is this easily reproducible ? > > > > Hi Badari, > > Thanks for your answer. > > I didn't reproduce it without the latest ext4 patches. So I suspect a > > bug in one of them. > > But how debugging this? > > Which other debug traces can I turn on? > > Let me understand. You applied latest ext4 patchsets ? If so, Mingming > has some slab-cleanup changes in the patchset. You can try backing them > out and see. > It's unlikely to be the jbd_slab_cleanup.patch, which actually get rid of slab allocation for buffers passing down to disk IO, and replace with get_free_page directly. Could you send me the profile used for ffsb test? Thanks, Mingming - To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
