On 09/08/2015 04:58 PM, Christoph Lameter wrote: > On Mon, 7 Sep 2015, Nikolay Borisov wrote: > >> Did a bit more investigation and it turns out the >> corruption is happening in slab_alloc_node, in the >> 'else' branch when get_freepointer is being called: > > Please reboot the system and specify > > slub_debug >
Unfortunately I haven't found a way to reproduce it so the only option would be to do this on a live server. However, the performance impact I believe is going to be very prohibitive :(. Alternatively what I could do is probably leave merging on but enable debugging only for the kmalloc-32 slab cache. Do you think this would provide enough information to help track the corruption when it happens, without impacting performance? > on the kernel command line. This will enable additional diagnostics which > will allow tracking down the issue to the subsystem causing it. > > > Or rebuild with > > CONFIG_SLUB_DEBUG_ON > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
