* [boqun:rust-sync 12/17] kernel/sched/core.c:8867:6: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
@ 2026-02-06 3:13 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-02-06 3:13 UTC (permalink / raw)
To: Peter Zijlstra; +Cc: oe-kbuild-all, Boqun Feng, Lyude Paul
tree: https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git rust-sync
head: 3ef437b5dd8b13bd88b1512531391ad30c26d539
commit: 6969095afa2073e65ecc958bb5064ddf808309b3 [12/17] preempt: Introduce HARDIRQ_DISABLE_BITS and PREEMPT_LONG
config: x86_64-rhel-9.4-kunit (https://download.01.org/0day-ci/archive/20260206/202602060417.9K70cRen-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260206/202602060417.9K70cRen-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/202602060417.9K70cRen-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
In file included from include/asm-generic/bug.h:31,
from arch/x86/include/asm/bug.h:193,
from arch/x86/include/asm/alternative.h:9,
from arch/x86/include/asm/barrier.h:5,
from include/linux/list.h:11,
from include/linux/smp.h:12,
from include/linux/kernel_stat.h:5,
from kernel/softirq.c:13:
kernel/softirq.c: In function 'handle_softirqs':
>> include/linux/kern_levels.h:5:25: warning: format '%x' expects argument of type 'unsigned int', but argument 5 has type 'long int' [-Wformat=]
5 | #define KERN_SOH "\001" /* ASCII Start Of Header */
| ^~~~~~
include/linux/printk.h:484:25: note: in definition of macro 'printk_index_wrap'
484 | _p_func(_fmt, ##__VA_ARGS__); \
| ^~~~
include/linux/printk.h:555:9: note: in expansion of macro 'printk'
555 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~
include/linux/kern_levels.h:11:25: note: in expansion of macro 'KERN_SOH'
11 | #define KERN_ERR KERN_SOH "3" /* error conditions */
| ^~~~~~~~
include/linux/printk.h:555:16: note: in expansion of macro 'KERN_ERR'
555 | printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~
kernel/softirq.c:633:25: note: in expansion of macro 'pr_err'
633 | pr_err("huh, entered softirq %u %s %p with preempt_count %08x, exited with %08x?\n",
| ^~~~~~
--
>> kernel/sched/core.c:8867:6: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
8867 | void __cant_sleep(const char *file, int line, long preempt_offset)
| ^~~~~~~~~~~~
In file included from include/linux/random.h:7,
from include/linux/nodemask.h:94,
from include/linux/numa.h:6,
from include/linux/cpumask.h:15,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:63,
from include/linux/sched.h:37,
from kernel/sched/core.c:11:
include/linux/kernel.h:78:13: note: previous declaration of '__cant_sleep' with type 'void(const char *, int, int)'
78 | extern void __cant_sleep(const char *file, int line, int preempt_offset);
| ^~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from arch/x86/include/asm/cache.h:5,
from include/vdso/cache.h:5,
from include/linux/cache.h:6,
from arch/x86/include/asm/current.h:10,
from include/linux/sched.h:12:
kernel/sched/core.c:8893:19: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
8893 | EXPORT_SYMBOL_GPL(__cant_sleep);
| ^~~~~~~~~~~~
include/linux/export.h:76:28: note: in definition of macro '__EXPORT_SYMBOL'
76 | extern typeof(sym) sym; \
| ^~~
include/linux/export.h:90:41: note: in expansion of macro '_EXPORT_SYMBOL'
90 | #define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "GPL")
| ^~~~~~~~~~~~~~
kernel/sched/core.c:8893:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
8893 | EXPORT_SYMBOL_GPL(__cant_sleep);
| ^~~~~~~~~~~~~~~~~
include/linux/kernel.h:78:13: note: previous declaration of '__cant_sleep' with type 'void(const char *, int, int)'
78 | extern void __cant_sleep(const char *file, int line, int preempt_offset);
| ^~~~~~~~~~~~
vim +8867 kernel/sched/core.c
8866
> 8867 void __cant_sleep(const char *file, int line, long preempt_offset)
8868 {
8869 static unsigned long prev_jiffy;
8870
8871 if (irqs_disabled())
8872 return;
8873
8874 if (!IS_ENABLED(CONFIG_PREEMPT_COUNT))
8875 return;
8876
8877 if (preempt_count() > preempt_offset)
8878 return;
8879
8880 if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy)
8881 return;
8882 prev_jiffy = jiffies;
8883
8884 printk(KERN_ERR "BUG: assuming atomic context at %s:%d\n", file, line);
8885 printk(KERN_ERR "in_atomic(): %d, irqs_disabled(): %d, pid: %d, name: %s\n",
8886 in_atomic(), irqs_disabled(),
8887 current->pid, current->comm);
8888
8889 debug_show_held_locks(current);
8890 dump_stack();
8891 add_taint(TAINT_WARN, LOCKDEP_STILL_OK);
8892 }
8893 EXPORT_SYMBOL_GPL(__cant_sleep);
8894
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
^ permalink raw reply [flat|nested] 2+ messages in thread
* [boqun:rust-sync 12/17] kernel/sched/core.c:8867:6: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
@ 2026-02-06 3:28 kernel test robot
0 siblings, 0 replies; 2+ messages in thread
From: kernel test robot @ 2026-02-06 3:28 UTC (permalink / raw)
To: Peter Zijlstra; +Cc: oe-kbuild-all, Boqun Feng, Lyude Paul
tree: https://git.kernel.org/pub/scm/linux/kernel/git/boqun/linux.git rust-sync
head: 3ef437b5dd8b13bd88b1512531391ad30c26d539
commit: 6969095afa2073e65ecc958bb5064ddf808309b3 [12/17] preempt: Introduce HARDIRQ_DISABLE_BITS and PREEMPT_LONG
config: sparc-randconfig-002-20260206 (https://download.01.org/0day-ci/archive/20260206/202602061130.vvWbm7SS-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 12.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260206/202602061130.vvWbm7SS-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/202602061130.vvWbm7SS-lkp@intel.com/
All errors (new ones prefixed by >>):
>> kernel/sched/core.c:8867:6: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
8867 | void __cant_sleep(const char *file, int line, long preempt_offset)
| ^~~~~~~~~~~~
In file included from include/linux/random.h:7,
from include/linux/nodemask.h:94,
from include/linux/numa.h:6,
from include/linux/cpumask.h:15,
from include/linux/smp.h:13,
from include/linux/lockdep.h:14,
from include/linux/spinlock.h:63,
from include/linux/sched.h:37,
from kernel/sched/core.c:11:
include/linux/kernel.h:78:13: note: previous declaration of '__cant_sleep' with type 'void(const char *, int, int)'
78 | extern void __cant_sleep(const char *file, int line, int preempt_offset);
| ^~~~~~~~~~~~
In file included from include/linux/linkage.h:7,
from include/linux/printk.h:8,
from include/asm-generic/bug.h:31,
from arch/sparc/include/asm/bug.h:25,
from include/linux/bug.h:5,
from include/linux/thread_info.h:13,
from arch/sparc/include/asm/current.h:15,
from include/linux/sched.h:12:
kernel/sched/core.c:8893:19: error: conflicting types for '__cant_sleep'; have 'void(const char *, int, long int)'
8893 | EXPORT_SYMBOL_GPL(__cant_sleep);
| ^~~~~~~~~~~~
include/linux/export.h:76:28: note: in definition of macro '__EXPORT_SYMBOL'
76 | extern typeof(sym) sym; \
| ^~~
include/linux/export.h:90:41: note: in expansion of macro '_EXPORT_SYMBOL'
90 | #define EXPORT_SYMBOL_GPL(sym) _EXPORT_SYMBOL(sym, "GPL")
| ^~~~~~~~~~~~~~
kernel/sched/core.c:8893:1: note: in expansion of macro 'EXPORT_SYMBOL_GPL'
8893 | EXPORT_SYMBOL_GPL(__cant_sleep);
| ^~~~~~~~~~~~~~~~~
include/linux/kernel.h:78:13: note: previous declaration of '__cant_sleep' with type 'void(const char *, int, int)'
78 | extern void __cant_sleep(const char *file, int line, int preempt_offset);
| ^~~~~~~~~~~~
Kconfig warnings: (for reference only)
WARNING: unmet direct dependencies detected for CAN_DEV
Depends on [n]: NETDEVICES [=n] && CAN [=y]
Selected by [y]:
- CAN [=y] && NET [=y]
vim +8867 kernel/sched/core.c
8866
> 8867 void __cant_sleep(const char *file, int line, long preempt_offset)
8868 {
8869 static unsigned long prev_jiffy;
8870
8871 if (irqs_disabled())
8872 return;
8873
8874 if (!IS_ENABLED(CONFIG_PREEMPT_COUNT))
8875 return;
8876
8877 if (preempt_count() > preempt_offset)
8878 return;
8879
8880 if (time_before(jiffies, prev_jiffy + HZ) && prev_jiffy)
8881 return;
8882 prev_jiffy = jiffies;
8883
8884 printk(KERN_ERR "BUG: assuming atomic context at %s:%d\n", file, line);
8885 printk(KERN_ERR "in_atomic(): %d, irqs_disabled(): %d, pid: %d, name: %s\n",
8886 in_atomic(), irqs_disabled(),
8887 current->pid, current->comm);
8888
8889 debug_show_held_locks(current);
8890 dump_stack();
8891 add_taint(TAINT_WARN, LOCKDEP_STILL_OK);
8892 }
8893 EXPORT_SYMBOL_GPL(__cant_sleep);
8894
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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