* Re: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process
[not found] <20251223102124.738818-4-ptikhomirov@virtuozzo.com>
@ 2025-12-24 1:30 ` kernel test robot
2025-12-24 3:26 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2025-12-24 1:30 UTC (permalink / raw)
To: Pavel Tikhomirov, Tejun Heo
Cc: llvm, oe-kbuild-all, Johannes Weiner, Michal Koutný, cgroups,
linux-kernel, Pavel Tikhomirov
Hi Pavel,
kernel test robot noticed the following build errors:
[auto build test ERROR on tj-cgroup/for-next]
[also build test ERROR on linus/master v6.19-rc2 next-20251219]
[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/Pavel-Tikhomirov/cgroup-v2-freezer-allow-freezing-with-kthreads/20251223-182826
base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next
patch link: https://lore.kernel.org/r/20251223102124.738818-4-ptikhomirov%40virtuozzo.com
patch subject: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20251224/202512240240.TCvafX5S-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512240240.TCvafX5S-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/202512240240.TCvafX5S-lkp@intel.com/
All errors (new ones prefixed by >>):
>> kernel/cgroup/freezer.c:374:7: error: call to undeclared function 'try_get_task_stack'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
374 | if (!try_get_task_stack(task))
| ^
kernel/cgroup/freezer.c:374:7: note: did you mean 'tryget_task_struct'?
include/linux/sched/task.h:120:35: note: 'tryget_task_struct' declared here
120 | static inline struct task_struct *tryget_task_struct(struct task_struct *t)
| ^
>> kernel/cgroup/freezer.c:377:2: error: call to undeclared function 'put_task_stack'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
377 | put_task_stack(task);
| ^
kernel/cgroup/freezer.c:377:2: note: did you mean 'put_task_struct'?
include/linux/sched/task.h:128:20: note: 'put_task_struct' declared here
128 | static inline void put_task_struct(struct task_struct *t)
| ^
2 errors generated.
vim +/try_get_task_stack +374 kernel/cgroup/freezer.c
357
358 static void warn_freeze_timeout_task(struct cgroup *cgrp, int timeout,
359 struct task_struct *task)
360 {
361 char *buf __free(kfree) = NULL;
362 pid_t tgid;
363
364 buf = kmalloc(PATH_MAX, GFP_KERNEL);
365 if (!buf)
366 return;
367
368 if (cgroup_path(cgrp, buf, PATH_MAX) < 0)
369 return;
370
371 tgid = task_pid_nr_ns(task, &init_pid_ns);
372 pr_warn("Freeze of %s took %ld sec, due to unfreezable process %d:%s.\n",
373 buf, timeout / USEC_PER_SEC, tgid, task->comm);
> 374 if (!try_get_task_stack(task))
375 return;
376 show_stack(task, NULL, KERN_WARNING);
> 377 put_task_stack(task);
378 }
379
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process
[not found] <20251223102124.738818-4-ptikhomirov@virtuozzo.com>
2025-12-24 1:30 ` [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process kernel test robot
@ 2025-12-24 3:26 ` kernel test robot
1 sibling, 0 replies; 2+ messages in thread
From: kernel test robot @ 2025-12-24 3:26 UTC (permalink / raw)
To: Pavel Tikhomirov, Tejun Heo
Cc: llvm, oe-kbuild-all, Johannes Weiner, Michal Koutný, cgroups,
linux-kernel, Pavel Tikhomirov
Hi Pavel,
kernel test robot noticed the following build errors:
[auto build test ERROR on tj-cgroup/for-next]
[also build test ERROR on linus/master v6.19-rc2 next-20251219]
[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/Pavel-Tikhomirov/cgroup-v2-freezer-allow-freezing-with-kthreads/20251223-182826
base: https://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git for-next
patch link: https://lore.kernel.org/r/20251223102124.738818-4-ptikhomirov%40virtuozzo.com
patch subject: [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process
config: sparc64-randconfig-002-20251224 (https://download.01.org/0day-ci/archive/20251224/202512241151.JDZuy1z3-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251224/202512241151.JDZuy1z3-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/202512241151.JDZuy1z3-lkp@intel.com/
All errors (new ones prefixed by >>):
>> kernel/cgroup/freezer.c:374:7: error: call to undeclared function 'try_get_task_stack'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
374 | if (!try_get_task_stack(task))
| ^
kernel/cgroup/freezer.c:374:7: note: did you mean 'tryget_task_struct'?
include/linux/sched/task.h:120:35: note: 'tryget_task_struct' declared here
120 | static inline struct task_struct *tryget_task_struct(struct task_struct *t)
| ^
>> kernel/cgroup/freezer.c:377:2: error: call to undeclared function 'put_task_stack'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
377 | put_task_stack(task);
| ^
kernel/cgroup/freezer.c:377:2: note: did you mean 'put_task_struct'?
include/linux/sched/task.h:128:20: note: 'put_task_struct' declared here
128 | static inline void put_task_struct(struct task_struct *t)
| ^
2 errors generated.
vim +/try_get_task_stack +374 kernel/cgroup/freezer.c
357
358 static void warn_freeze_timeout_task(struct cgroup *cgrp, int timeout,
359 struct task_struct *task)
360 {
361 char *buf __free(kfree) = NULL;
362 pid_t tgid;
363
364 buf = kmalloc(PATH_MAX, GFP_KERNEL);
365 if (!buf)
366 return;
367
368 if (cgroup_path(cgrp, buf, PATH_MAX) < 0)
369 return;
370
371 tgid = task_pid_nr_ns(task, &init_pid_ns);
372 pr_warn("Freeze of %s took %ld sec, due to unfreezable process %d:%s.\n",
373 buf, timeout / USEC_PER_SEC, tgid, task->comm);
> 374 if (!try_get_task_stack(task))
375 return;
376 show_stack(task, NULL, KERN_WARNING);
> 377 put_task_stack(task);
378 }
379
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <20251223102124.738818-4-ptikhomirov@virtuozzo.com>
2025-12-24 1:30 ` [PATCH 2/2] cgroup-v2/freezer: Print information about unfreezable process kernel test robot
2025-12-24 3:26 ` kernel test robot
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