When freeing objects, the slob allocator currently free empty pages calling __free_pages(). However, page-size kmallocs are disposed using put_page() instead. It makes no sense to call put_page() for kernel pages that are provided by the object allocator, so we shouldn't be doing this ourselves. This is based on: commit d9b7f22623b5fa9cc189581dcdfb2ac605933bf4 Author: Glauber Costa <glommer@xxxxxxxxxxxxx> slub: use free_page instead of put_page for freeing kmalloc allocation Cc: Christoph Lameter <cl@xxxxxxxxxxxxxxxxxxxx> Cc: Pekka Enberg <penberg@xxxxxxxxxx> Cc: Matt Mackall <mpm@xxxxxxxxxxx> Cc: Glauber Costa <glommer@xxxxxxxxxxxxx> Signed-off-by: Ezequiel Garcia <elezegarcia@xxxxxxxxx> --- mm/slob.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/mm/slob.c b/mm/slob.c index a65e802..362632d 100644 --- a/mm/slob.c +++ b/mm/slob.c @@ -506,7 +506,7 @@ void kfree(const void *block) unsigned int *m = (unsigned int *)(block - align); slob_free(m, *m + align); } else - put_page(sp); + __free_pages(sp, compound_order(sp)); } EXPORT_SYMBOL(kfree); -- 1.7.8.6 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>