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Message-ID: <202310082109.JOBtnIOu-lkp@intel.com>
Date: Sun, 8 Oct 2023 21:42:02 +0800
From: kernel test robot <lkp@...el.com>
To: "brookxu.cn" <brookxu.cn@...il.com>, bsingharora@...il.com,
juri.lelli@...hat.com, peterz@...radead.org,
vincent.guittot@...aro.org
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] delayacct: convert task->delays to a object
Hi brookxu.cn,
kernel test robot noticed the following build errors:
[auto build test ERROR on tip/sched/core]
[also build test ERROR on linus/master v6.6-rc4 next-20231006]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/brookxu-cn/delayacct-introduce-delayacct_enabled-to-simplify-implement/20231008-185144
base: tip/sched/core
patch link: https://lore.kernel.org/r/531ddc82793a39f4c09316d701a4b1170bcad4ab.1696761522.git.chunguang.xu%40shopee.com
patch subject: [PATCH 2/3] delayacct: convert task->delays to a object
config: riscv-randconfig-002-20231008 (https://download.01.org/0day-ci/archive/20231008/202310082109.JOBtnIOu-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231008/202310082109.JOBtnIOu-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@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310082109.JOBtnIOu-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/riscv/include/asm/compat.h:12,
from arch/riscv/include/asm/pgtable.h:119,
from include/linux/pgtable.h:6,
from include/linux/kasan.h:33,
from include/linux/slab.h:180,
from include/linux/delayacct.h:62,
from include/linux/sched.h:40,
from include/linux/mm.h:28,
from arch/riscv/kernel/asm-offsets.c:10:
include/linux/sched/task_stack.h: In function 'task_stack_page':
>> include/linux/sched/task_stack.h:21:20: error: invalid use of undefined type 'const struct task_struct'
21 | return task->stack;
| ^~
include/linux/sched/task_stack.h: In function 'end_of_stack':
include/linux/sched/task_stack.h:31:20: error: invalid use of undefined type 'const struct task_struct'
31 | return task->stack;
| ^~
include/linux/sched/task_stack.h: In function 'try_get_task_stack':
>> include/linux/sched/task_stack.h:68:42: error: invalid use of undefined type 'struct task_struct'
68 | return refcount_inc_not_zero(&tsk->stack_refcount) ?
| ^~
make[3]: *** [scripts/Makefile.build:116: arch/riscv/kernel/asm-offsets.s] Error 1 shuffle=2275994632
make[3]: Target 'prepare' not remade because of errors.
make[2]: *** [Makefile:1202: prepare0] Error 2 shuffle=2275994632
make[2]: Target 'prepare' not remade because of errors.
make[1]: *** [Makefile:234: __sub-make] Error 2 shuffle=2275994632
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:234: __sub-make] Error 2 shuffle=2275994632
make: Target 'prepare' not remade because of errors.
vim +21 include/linux/sched/task_stack.h
f3ac60671954c8 Ingo Molnar 2017-02-03 13
f3ac60671954c8 Ingo Molnar 2017-02-03 14 /*
f3ac60671954c8 Ingo Molnar 2017-02-03 15 * When accessing the stack of a non-current task that might exit, use
f3ac60671954c8 Ingo Molnar 2017-02-03 16 * try_get_task_stack() instead. task_stack_page will return a pointer
f3ac60671954c8 Ingo Molnar 2017-02-03 17 * that could get freed out from under you.
f3ac60671954c8 Ingo Molnar 2017-02-03 18 */
e87f4152e54261 Borislav Petkov 2022-03-23 19 static __always_inline void *task_stack_page(const struct task_struct *task)
f3ac60671954c8 Ingo Molnar 2017-02-03 20 {
f3ac60671954c8 Ingo Molnar 2017-02-03 @21 return task->stack;
f3ac60671954c8 Ingo Molnar 2017-02-03 22 }
f3ac60671954c8 Ingo Molnar 2017-02-03 23
f3ac60671954c8 Ingo Molnar 2017-02-03 24 #define setup_thread_stack(new,old) do { } while(0)
f3ac60671954c8 Ingo Molnar 2017-02-03 25
e0b081d17a9f4e Josh Poimboeuf 2023-04-12 26 static __always_inline unsigned long *end_of_stack(const struct task_struct *task)
f3ac60671954c8 Ingo Molnar 2017-02-03 27 {
9cc2fa4f4a92cc Helge Deller 2021-10-05 28 #ifdef CONFIG_STACK_GROWSUP
9cc2fa4f4a92cc Helge Deller 2021-10-05 29 return (unsigned long *)((unsigned long)task->stack + THREAD_SIZE) - 1;
9cc2fa4f4a92cc Helge Deller 2021-10-05 30 #else
f3ac60671954c8 Ingo Molnar 2017-02-03 31 return task->stack;
9cc2fa4f4a92cc Helge Deller 2021-10-05 32 #endif
f3ac60671954c8 Ingo Molnar 2017-02-03 33 }
f3ac60671954c8 Ingo Molnar 2017-02-03 34
f3ac60671954c8 Ingo Molnar 2017-02-03 35 #elif !defined(__HAVE_THREAD_FUNCTIONS)
f3ac60671954c8 Ingo Molnar 2017-02-03 36
f3ac60671954c8 Ingo Molnar 2017-02-03 37 #define task_stack_page(task) ((void *)(task)->stack)
f3ac60671954c8 Ingo Molnar 2017-02-03 38
f3ac60671954c8 Ingo Molnar 2017-02-03 39 static inline void setup_thread_stack(struct task_struct *p, struct task_struct *org)
f3ac60671954c8 Ingo Molnar 2017-02-03 40 {
f3ac60671954c8 Ingo Molnar 2017-02-03 41 *task_thread_info(p) = *task_thread_info(org);
f3ac60671954c8 Ingo Molnar 2017-02-03 42 task_thread_info(p)->task = p;
f3ac60671954c8 Ingo Molnar 2017-02-03 43 }
f3ac60671954c8 Ingo Molnar 2017-02-03 44
f3ac60671954c8 Ingo Molnar 2017-02-03 45 /*
f3ac60671954c8 Ingo Molnar 2017-02-03 46 * Return the address of the last usable long on the stack.
f3ac60671954c8 Ingo Molnar 2017-02-03 47 *
f3ac60671954c8 Ingo Molnar 2017-02-03 48 * When the stack grows down, this is just above the thread
f3ac60671954c8 Ingo Molnar 2017-02-03 49 * info struct. Going any lower will corrupt the threadinfo.
f3ac60671954c8 Ingo Molnar 2017-02-03 50 *
f3ac60671954c8 Ingo Molnar 2017-02-03 51 * When the stack grows up, this is the highest address.
f3ac60671954c8 Ingo Molnar 2017-02-03 52 * Beyond that position, we corrupt data on the next page.
f3ac60671954c8 Ingo Molnar 2017-02-03 53 */
f3ac60671954c8 Ingo Molnar 2017-02-03 54 static inline unsigned long *end_of_stack(struct task_struct *p)
f3ac60671954c8 Ingo Molnar 2017-02-03 55 {
f3ac60671954c8 Ingo Molnar 2017-02-03 56 #ifdef CONFIG_STACK_GROWSUP
f3ac60671954c8 Ingo Molnar 2017-02-03 57 return (unsigned long *)((unsigned long)task_thread_info(p) + THREAD_SIZE) - 1;
f3ac60671954c8 Ingo Molnar 2017-02-03 58 #else
f3ac60671954c8 Ingo Molnar 2017-02-03 59 return (unsigned long *)(task_thread_info(p) + 1);
f3ac60671954c8 Ingo Molnar 2017-02-03 60 #endif
f3ac60671954c8 Ingo Molnar 2017-02-03 61 }
f3ac60671954c8 Ingo Molnar 2017-02-03 62
f3ac60671954c8 Ingo Molnar 2017-02-03 63 #endif
f3ac60671954c8 Ingo Molnar 2017-02-03 64
f3ac60671954c8 Ingo Molnar 2017-02-03 65 #ifdef CONFIG_THREAD_INFO_IN_TASK
f3ac60671954c8 Ingo Molnar 2017-02-03 66 static inline void *try_get_task_stack(struct task_struct *tsk)
f3ac60671954c8 Ingo Molnar 2017-02-03 67 {
f0b89d3958d73c Elena Reshetova 2019-01-18 @68 return refcount_inc_not_zero(&tsk->stack_refcount) ?
f3ac60671954c8 Ingo Molnar 2017-02-03 69 task_stack_page(tsk) : NULL;
f3ac60671954c8 Ingo Molnar 2017-02-03 70 }
f3ac60671954c8 Ingo Molnar 2017-02-03 71
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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