* [sean-jc:x86/uaccess_bad_mm 2/9] arch/powerpc/kvm/powerpc.c:774:30: error: 'memslot' undeclared; did you mean 'memset'?
@ 2026-09-13 7:34 kernel test robot
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From: kernel test robot @ 2026-09-13 7:34 UTC (permalink / raw)
To: Sean Christopherson; +Cc: oe-kbuild-all
tree: https://github.com/sean-jc/linux x86/uaccess_bad_mm
head: 5e20baf271c570712cb8efe0d9400725d6c04386
commit: 12159515b6f2a33c1cdf0cd58802d5e03036ff02 [2/9] KVM: PPC: Flush/zap all memslots on kvm_arch_flush_shadow_all()
config: powerpc-powernv_defconfig (https://download.01.org/0day-ci/archive/20260913/202609131550.9LgiOEdZ-lkp@intel.com/config)
compiler: powerpc64-linux-gcc (GCC) 16.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260913/202609131550.9LgiOEdZ-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202609131550.9LgiOEdZ-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from include/linux/kvm_host.h:33,
from arch/powerpc/kvm/powerpc.c:12:
arch/powerpc/kvm/powerpc.c: In function 'kvm_arch_flush_shadow_all':
>> arch/powerpc/kvm/powerpc.c:774:30: error: 'memslot' undeclared (first use in this function); did you mean 'memset'?
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~
include/linux/hashtable.h:127:25: note: in definition of macro 'hash_for_each'
127 | for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\
| ^~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:30: note: each undeclared identifier is reported only once for each function it appears in
include/linux/hashtable.h:127:25: note: in definition of macro 'hash_for_each'
127 | for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\
| ^~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/init.h:5,
from include/linux/printk.h:6,
from include/asm-generic/bug.h:31,
from arch/powerpc/include/asm/bug.h:116,
from include/linux/bug.h:5,
from arch/powerpc/include/asm/mmu.h:142,
from arch/powerpc/include/asm/paca.h:18,
from arch/powerpc/include/asm/current.h:13,
from include/linux/sched.h:12,
from include/linux/resume_user_mode.h:6,
from include/linux/entry-virt.h:6,
from include/linux/kvm_host.h:5:
include/linux/compiler_types.h:610:27: error: expression in static assertion is not an integer
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:80:56: note: in definition of macro '__static_assert'
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~
include/linux/list.h:1199:40: note: in expansion of macro 'container_of'
1199 | #define hlist_entry(ptr, type, member) container_of(ptr,type,member)
| ^~~~~~~~~~~~
include/linux/list.h:1210:22: note: in expansion of macro 'hlist_entry'
1210 | ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
| ^~~~~~~~~~~
include/linux/list.h:1220:20: note: in expansion of macro 'hlist_entry_safe'
1220 | for (pos = hlist_entry_safe((head)->first, typeof(*(pos)), member);\
| ^~~~~~~~~~~~~~~~
include/linux/hashtable.h:129:17: note: in expansion of macro 'hlist_for_each_entry'
129 | hlist_for_each_entry(obj, &name[bkt], member)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/kvm_host.h:1117:9: note: in expansion of macro 'hash_for_each'
1117 | hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
| ^~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/container_of.h:20:35: error: invalid type argument of unary '*' (have 'int')
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~
include/linux/build_bug.h:80:56: note: in definition of macro '__static_assert'
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~
include/linux/list.h:1199:40: note: in expansion of macro 'container_of'
1199 | #define hlist_entry(ptr, type, member) container_of(ptr,type,member)
| ^~~~~~~~~~~~
include/linux/list.h:1210:22: note: in expansion of macro 'hlist_entry'
1210 | ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
| ^~~~~~~~~~~
include/linux/list.h:1222:20: note: in expansion of macro 'hlist_entry_safe'
1222 | pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
| ^~~~~~~~~~~~~~~~
include/linux/hashtable.h:129:17: note: in expansion of macro 'hlist_for_each_entry'
129 | hlist_for_each_entry(obj, &name[bkt], member)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/kvm_host.h:1117:9: note: in expansion of macro 'hash_for_each'
1117 | hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
| ^~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/container_of.h:21:35: error: invalid type argument of unary '*' (have 'int')
21 | __same_type(*(ptr), void), \
| ^~~~~~
include/linux/build_bug.h:80:56: note: in definition of macro '__static_assert'
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:21:23: note: in expansion of macro '__same_type'
21 | __same_type(*(ptr), void), \
| ^~~~~~~~~~~
include/linux/list.h:1199:40: note: in expansion of macro 'container_of'
1199 | #define hlist_entry(ptr, type, member) container_of(ptr,type,member)
| ^~~~~~~~~~~~
include/linux/list.h:1210:22: note: in expansion of macro 'hlist_entry'
1210 | ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
| ^~~~~~~~~~~
include/linux/list.h:1222:20: note: in expansion of macro 'hlist_entry_safe'
1222 | pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
| ^~~~~~~~~~~~~~~~
include/linux/hashtable.h:129:17: note: in expansion of macro 'hlist_for_each_entry'
129 | hlist_for_each_entry(obj, &name[bkt], member)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/kvm_host.h:1117:9: note: in expansion of macro 'hash_for_each'
1117 | hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
| ^~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:610:27: error: expression in static assertion is not an integer
610 | #define __same_type(a, b) __builtin_types_compatible_p(typeof(a), typeof(b))
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:80:56: note: in definition of macro '__static_assert'
80 | #define __static_assert(expr, msg, ...) _Static_assert(expr, msg)
| ^~~~
include/linux/container_of.h:20:9: note: in expansion of macro 'static_assert'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~~~
include/linux/container_of.h:20:23: note: in expansion of macro '__same_type'
20 | static_assert(__same_type(*(ptr), typeof_member(type, member)) || \
| ^~~~~~~~~~~
include/linux/list.h:1199:40: note: in expansion of macro 'container_of'
1199 | #define hlist_entry(ptr, type, member) container_of(ptr,type,member)
| ^~~~~~~~~~~~
include/linux/list.h:1210:22: note: in expansion of macro 'hlist_entry'
1210 | ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
| ^~~~~~~~~~~
include/linux/list.h:1222:20: note: in expansion of macro 'hlist_entry_safe'
1222 | pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
| ^~~~~~~~~~~~~~~~
include/linux/hashtable.h:129:17: note: in expansion of macro 'hlist_for_each_entry'
129 | hlist_for_each_entry(obj, &name[bkt], member)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/kvm_host.h:1117:9: note: in expansion of macro 'hash_for_each'
1117 | hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
| ^~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:22,
from arch/powerpc/include/asm/page.h:11,
from arch/powerpc/include/asm/mmu.h:144:
>> include/linux/container_of.h:23:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
23 | (type *)((void *)(ptr) - offsetof(type, member)); })
| ^
include/linux/list.h:1199:40: note: in expansion of macro 'container_of'
1199 | #define hlist_entry(ptr, type, member) container_of(ptr,type,member)
| ^~~~~~~~~~~~
include/linux/list.h:1210:22: note: in expansion of macro 'hlist_entry'
1210 | ____ptr ? hlist_entry(____ptr, type, member) : NULL; \
| ^~~~~~~~~~~
include/linux/list.h:1222:20: note: in expansion of macro 'hlist_entry_safe'
1222 | pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
| ^~~~~~~~~~~~~~~~
include/linux/hashtable.h:129:17: note: in expansion of macro 'hlist_for_each_entry'
129 | hlist_for_each_entry(obj, &name[bkt], member)
| ^~~~~~~~~~~~~~~~~~~~
include/linux/kvm_host.h:1117:9: note: in expansion of macro 'hash_for_each'
1117 | hash_for_each(slots->id_hash, bkt, memslot, id_node[slots->node_idx]) \
| ^~~~~~~~~~~~~
arch/powerpc/kvm/powerpc.c:774:9: note: in expansion of macro 'kvm_for_each_memslot'
774 | kvm_for_each_memslot(memslot, bkt, slots)
| ^~~~~~~~~~~~~~~~~~~~
vim +774 arch/powerpc/kvm/powerpc.c
766
767 void kvm_arch_flush_shadow_all(struct kvm *kvm)
768 {
769 struct kvm_memory_slot *slot;
770 struct kvm_memslots *slots;
771 int bkt;
772
773 slots = kvm_memslots(kvm);
> 774 kvm_for_each_memslot(memslot, bkt, slots)
775 kvmppc_core_flush_memslot(kvm, slot);
776 }
777
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2026-09-13 7:34 [sean-jc:x86/uaccess_bad_mm 2/9] arch/powerpc/kvm/powerpc.c:774:30: error: 'memslot' undeclared; did you mean 'memset'? kernel test robot
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