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Date: Sat, 22 Jun 2019 02:13:26 +0800
From: kbuild test robot <lkp@...el.com>
To: "Chang S. Bae" <chang.seok.bae@...el.com>
Cc: kbuild-all@...org, linux-kernel@...r.kernel.org,
tipbuild@...or.com, Thomas Gleixner <tglx@...utronix.de>
Subject: [tip:WIP.x86/cpu 8/17] arch/x86//kernel/process_64.c:256:3: note: in
expansion of macro 'local_irq_save'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.x86/cpu
head: 707e6befd43ba8d754485d8d02ed4f49ec8ec667
commit: 41cf6ccef21080168970226f657daff26ecaf3e1 [8/17] x86/process/64: Use FSGSBASE instructions on thread copy and ptrace
config: x86_64-allyesconfig (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
git checkout 41cf6ccef21080168970226f657daff26ecaf3e1
# save the attached .config to linux build tree
make ARCH=x86_64
If you fix the issue, kindly add following tag
Reported-by: kbuild test robot <lkp@...el.com>
All error/warnings (new ones prefixed by >>):
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
arch/x86//kernel/process_64.c: In function 'save_fsgs':
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
>> include/linux/irqflags.h:83:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:115:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^~~~~~~~~~~~~~~~~~
>> arch/x86//kernel/process_64.c:256:3: note: in expansion of macro 'local_irq_save'
local_irq_save(&flags);
^~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
>> include/linux/irqflags.h:84:9: error: lvalue required as left operand of assignment
flags = arch_local_irq_save(); \
^
>> include/linux/irqflags.h:115:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^~~~~~~~~~~~~~~~~~
>> arch/x86//kernel/process_64.c:256:3: note: in expansion of macro 'local_irq_save'
local_irq_save(&flags);
^~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:98:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:122:7: note: in expansion of macro 'raw_irqs_disabled_flags'
if (raw_irqs_disabled_flags(flags)) { \
^~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
>> arch/x86//kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_irqs_disabled_flags' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:99:28: note: in definition of macro 'raw_irqs_disabled_flags'
arch_irqs_disabled_flags(flags); \
^~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from include/linux/irqflags.h:16:0,
from arch/x86/include/asm/processor.h:33,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
arch/x86/include/asm/irqflags.h:162:19: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline int arch_irqs_disabled_flags(unsigned long flags)
^~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:88:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:123:4: note: in expansion of macro 'raw_local_irq_restore'
raw_local_irq_restore(flags); \
^~~~~~~~~~~~~~~~~~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
>> arch/x86//kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_local_irq_restore' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:89:26: note: in definition of macro 'raw_local_irq_restore'
arch_local_irq_restore(flags); \
^~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/msr.h:258:0,
from arch/x86/include/asm/processor.h:21,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
arch/x86/include/asm/paravirt.h:765:28: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline notrace void arch_local_irq_restore(unsigned long f)
^~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:88:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
include/linux/irqflags.h:127:4: note: in expansion of macro 'raw_local_irq_restore'
raw_local_irq_restore(flags); \
^~~~~~~~~~~~~~~~~~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
>> arch/x86//kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_local_irq_restore' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:89:26: note: in definition of macro 'raw_local_irq_restore'
arch_local_irq_restore(flags); \
^~~~~
>> arch/x86//kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/msr.h:258:0,
from arch/x86/include/asm/processor.h:21,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86//kernel/process_64.c:18:
arch/x86/include/asm/paravirt.h:765:28: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline notrace void arch_local_irq_restore(unsigned long f)
^~~~~~~~~~~~~~~~~~~~~~
--
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/kernel/process_64.c: In function 'save_fsgs':
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
>> include/linux/irqflags.h:83:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:115:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^~~~~~~~~~~~~~~~~~
arch/x86/kernel/process_64.c:256:3: note: in expansion of macro 'local_irq_save'
local_irq_save(&flags);
^~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
>> include/linux/irqflags.h:84:9: error: lvalue required as left operand of assignment
flags = arch_local_irq_save(); \
^
>> include/linux/irqflags.h:115:3: note: in expansion of macro 'raw_local_irq_save'
raw_local_irq_save(flags); \
^~~~~~~~~~~~~~~~~~
arch/x86/kernel/process_64.c:256:3: note: in expansion of macro 'local_irq_save'
local_irq_save(&flags);
^~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:98:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:122:7: note: in expansion of macro 'raw_irqs_disabled_flags'
if (raw_irqs_disabled_flags(flags)) { \
^~~~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_irqs_disabled_flags' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:99:28: note: in definition of macro 'raw_irqs_disabled_flags'
arch_irqs_disabled_flags(flags); \
^~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from include/linux/irqflags.h:16:0,
from arch/x86/include/asm/processor.h:33,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/include/asm/irqflags.h:162:19: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline int arch_irqs_disabled_flags(unsigned long flags)
^~~~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:88:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
>> include/linux/irqflags.h:123:4: note: in expansion of macro 'raw_local_irq_restore'
raw_local_irq_restore(flags); \
^~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_local_irq_restore' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:89:26: note: in definition of macro 'raw_local_irq_restore'
arch_local_irq_restore(flags); \
^~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/msr.h:258:0,
from arch/x86/include/asm/processor.h:21,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/include/asm/paravirt.h:765:28: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline notrace void arch_local_irq_restore(unsigned long f)
^~~~~~~~~~~~~~~~~~~~~~
In file included from include/linux/kernel.h:14:0,
from include/linux/list.h:9,
from include/linux/kobject.h:19,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
include/linux/typecheck.h:12:18: warning: comparison of distinct pointer types lacks a cast
(void)(&__dummy == &__dummy2); \
^
include/linux/irqflags.h:88:3: note: in expansion of macro 'typecheck'
typecheck(unsigned long, flags); \
^~~~~~~~~
include/linux/irqflags.h:127:4: note: in expansion of macro 'raw_local_irq_restore'
raw_local_irq_restore(flags); \
^~~~~~~~~~~~~~~~~~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/processor.h:33:0,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/kernel/process_64.c:258:21: warning: passing argument 1 of 'arch_local_irq_restore' makes integer from pointer without a cast [-Wint-conversion]
local_irq_restore(&flags);
^
include/linux/irqflags.h:89:26: note: in definition of macro 'raw_local_irq_restore'
arch_local_irq_restore(flags); \
^~~~~
arch/x86/kernel/process_64.c:258:3: note: in expansion of macro 'local_irq_restore'
local_irq_restore(&flags);
^~~~~~~~~~~~~~~~~
In file included from arch/x86/include/asm/msr.h:258:0,
from arch/x86/include/asm/processor.h:21,
from include/linux/mutex.h:19,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/device.h:16,
from include/linux/node.h:18,
from include/linux/cpu.h:17,
from arch/x86/kernel/process_64.c:18:
arch/x86/include/asm/paravirt.h:765:28: note: expected 'long unsigned int' but argument is of type 'long unsigned int *'
static inline notrace void arch_local_irq_restore(unsigned long f)
^~~~~~~~~~~~~~~~~~~~~~
vim +/local_irq_save +256 arch/x86//kernel/process_64.c
242
243 static __always_inline void save_fsgs(struct task_struct *task)
244 {
245 savesegment(fs, task->thread.fsindex);
246 savesegment(gs, task->thread.gsindex);
247 if (static_cpu_has(X86_FEATURE_FSGSBASE)) {
248 unsigned long flags;
249
250 /*
251 * If FSGSBASE is enabled, we can't make any useful guesses
252 * about the base, and user code expects us to save the current
253 * value. Fortunately, reading the base directly is efficient.
254 */
255 task->thread.fsbase = rdfsbase();
> 256 local_irq_save(&flags);
257 task->thread.gsbase = __rdgsbase_inactive();
> 258 local_irq_restore(&flags);
259 } else {
260 save_base_legacy(task, task->thread.fsindex, FS);
261 save_base_legacy(task, task->thread.gsindex, GS);
262 }
263 }
264
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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