slub: remove kmalloc under list_lock from list_slab_objects() V2
list_slab_objects() is called when a slab is destroyed and there are objects still left to list the objects in the syslog. This is a pretty rare event. And there it seems we take the list_lock and call kmalloc while holding that lock. Perform the allocation in free_partial() before the list_lock is taken. Fixes: bbd7d57b ("slub: Potential stack overflow") Signed-off-by: Christopher Lameter <cl@linux.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Cc: Pekka Enberg <penberg@kernel.org> Cc: David Rientjes <rientjes@google.com> Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com> Cc: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Cc: Yu Zhao <yuzhao@google.com> Link: http://lkml.kernel.org/r/alpine.DEB.2.21.2002031721250.1668@www.lameter.comSigned-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Showing
Please register or sign in to comment