On Wed, Nov 20, 2024 at 09:50:47AM -0800, Christoph Lameter (Ampere) wrote:
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??
u64s aren't aligned on x86-32. it's caused some problems over the
years, but things work ok in general.
How do you deal with torn reads/writes in such a scenario? Is this UP
only?
there were never a lot of smp m68k. not sure i can think of one, tbh.
sun3 and hp300/400 seem like the obvious people who might have done an
smp m68k, but neither did.
