Messages in this thread | | | Date | Mon, 2 May 2016 14:37:36 +1000 | From | Stephen Rothwell <> | Subject | linux-next: build failure after merge of the rcu tree |
| |
Hi Paul,
After merging the rcu tree, today's linux-next build (x86_64 allmodconfig) failed like this:
arch/x86/kvm/vmx.c: In function 'vmx_init': arch/x86/kvm/vmx.c:11026:2: error: function '_r_a_p__v' is initialized like a variable rcu_assign_pointer(crash_vmclear_loaded_vmcss, ^ In file included from include/linux/rbtree.h:34:0, from include/linux/mm_types.h:9, from arch/x86/kvm/irq.h:25, from arch/x86/kvm/vmx.c:19: include/linux/rcupdate.h:657:45: warning: the comparison will always evaluate as 'false' for the address of '_r_a_p__v' will never be NULL [-Waddress] if (__builtin_constant_p(v) && (_r_a_p__v) == NULL) \ ^ arch/x86/kvm/vmx.c:11026:2: note: in expansion of macro 'rcu_assign_pointer' rcu_assign_pointer(crash_vmclear_loaded_vmcss, ^ include/linux/rcupdate.h:655:12: error: nested function '_r_a_p__v' declared but never defined typeof(v) _r_a_p__v = (v); \ ^ arch/x86/kvm/vmx.c:11026:2: note: in expansion of macro 'rcu_assign_pointer' rcu_assign_pointer(crash_vmclear_loaded_vmcss, ^
Caused by commit
16d7afcaa530 ("rcu: No ordering for rcu_assign_pointer() of NULL")
I have reverted that commit for today.
-- Cheers, Stephen Rothwell
| |