On Wed, 20 Nov 2024, Vlastimil Babka wrote:
Fixes: aaa736b186239b7d ("io_uring: specify freeptr usage for SLAB_TYPESAFE_BY_RCU io_kiocb cache") Fixes: d345bd2e9834e2da ("mm: add kmem_cache_create_rcu()") Reported-by: Guenter Roeck <linux@xxxxxxxxxxxx> Closes: https://lore.kernel.org/37c588d4-2c32-4aad-a19e-642961f200d7@xxxxxxxxxxxx Signed-off-by: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>Thanks, will add it to slab pull for 6.13.
Note that there are widespread assumptions in kernel code that the alignment of scalars is the "natural alignment". Other portions of the kernel may break. The compiler actually goes along with this?? How do you deal with torn reads/writes in such a scenario? Is this UP only?
