From: Arnd Bergmann <[email protected]> Date: Fri, 20 Jun 2025 19:31:24 +0200
> From: Arnd Bergmann <[email protected]> > > With large values of CONFIG_NR_CPUS, three Intel ethernet drivers fail to > compile like: > > In function ‘i40e_free_q_vector’, > inlined from ‘i40e_vsi_alloc_q_vectors’ at > drivers/net/ethernet/intel/i40e/i40e_main.c:12112:3: > 571 | _compiletime_assert(condition, msg, __compiletime_assert_, > __COUNTER__) > include/linux/rcupdate.h:1084:17: note: in expansion of macro ‘BUILD_BUG_ON’ > 1084 | BUILD_BUG_ON(offsetof(typeof(*(ptr)), rhf) >= 4096); > \ > drivers/net/ethernet/intel/i40e/i40e_main.c:5113:9: note: in expansion of > macro ‘kfree_rcu’ > 5113 | kfree_rcu(q_vector, rcu); > | ^~~~~~~~~ > > The problem is that the 'rcu' member in 'q_vector' is too far from the start > of the structure. Move this member before the CPU mask instead, in all three > drivers. > > Signed-off-by: Arnd Bergmann <[email protected]> > --- > v2: move rcu to just after the napi_struct [Alexander Lobakin] Acked-by: David S. Miller <[email protected]>
