* Re: [PATCH v2 10/15] lib/lz4: switch the compressor to the vendored sources
[not found] <20261106-lz4-vendor-upstream-v2-10-ee04c3f0d7dc@samsung.com>
@ 2026-11-07 1:40 ` kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2026-11-07 1:40 UTC (permalink / raw)
To: Michal Wilczynski, Nathan Chancellor, Nick Desaulniers,
Bill Wendling, Justin Stitt, Russell King, Thomas Bogendoerfer,
James E.J. Bottomley, Helge Deller, Heiko Carstens, Vasily Gorbik,
Alexander Gordeev, Christian Borntraeger, Sven Schnelle,
Thomas Gleixner, Ingo Molnar, Borislav Petkov, Dave Hansen, x86,
H. Peter Anvin, Minchan Kim, Sergey Senozhatsky, Jens Axboe,
Andrew Morton
Cc: oe-kbuild-all, Linux Memory Management List, linux-kernel, llvm,
linux-arm-kernel, linux-mips, linux-parisc
Hi Michal,
kernel test robot noticed the following build errors:
[auto build test ERROR on 93f51579e7df248780214094418f205253383cc5]
url: https://github.com/intel-lab-lkp/linux/commits/Michal-Wilczynski/lib-decompress_unlz4-use-LZ4_decompress_safe_partial-before-boot/20261106-154241
base: 93f51579e7df248780214094418f205253383cc5
patch link: https://lore.kernel.org/r/20261106-lz4-vendor-upstream-v2-10-ee04c3f0d7dc%40samsung.com
patch subject: [PATCH v2 10/15] lib/lz4: switch the compressor to the vendored sources
config: arc-allmodconfig (https://download.01.org/0day-ci/archive/20261107/202611070943.EDg3udaH-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 16.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261107/202611070943.EDg3udaH-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/202611070943.EDg3udaH-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from include/linux/rcupdate.h:27,
from include/linux/rbtree.h:24,
from include/linux/mm_types.h:11,
from include/linux/mmzone.h:22,
from include/linux/gfp.h:7,
from include/linux/umh.h:4,
from include/linux/kmod.h:9,
from include/linux/module.h:18,
from lib/lz4/lz4_compress.c:29:
include/linux/sched.h: In function 'is_percpu_thread':
>> include/linux/sched.h:1860:17: error: 'current' undeclared (first use in this function)
1860 | return (current->flags & PF_NO_SETAFFINITY) &&
| ^~~~~~~
include/linux/sched.h:1860:17: note: each undeclared identifier is reported only once for each function it appears in
include/linux/sched.h: In function 'current_restore_flags':
include/linux/sched.h:1918:9: error: 'current' undeclared (first use in this function)
1918 | current->flags &= ~flags;
| ^~~~~~~
include/linux/sched.h: In function 'set_need_resched_current':
include/linux/sched.h:2127:30: error: 'current' undeclared (first use in this function)
2127 | set_tsk_need_resched(current);
| ^~~~~~~
In file included from include/asm-generic/bug.h:7,
from arch/arc/include/asm/bug.h:30,
from include/linux/bug.h:5,
from lib/lz4/lz4_compress.c:27:
include/linux/sched.h: In function '__set_task_blocked_on':
include/linux/sched.h:2231:27: error: 'current' undeclared (first use in this function)
2231 | WARN_ON_ONCE(p != current);
| ^~~~~~~
include/linux/once_lite.h:28:41: note: in definition of macro 'DO_ONCE_LITE_IF'
28 | bool __ret_do_once = !!(condition); \
| ^~~~~~~~~
include/linux/sched.h:2231:9: note: in expansion of macro 'WARN_ON_ONCE'
2231 | WARN_ON_ONCE(p != current);
| ^~~~~~~~~~~~
In file included from include/linux/nodemask.h:92,
from include/linux/numa.h:6,
from include/linux/cpumask.h:15,
from include/linux/smp.h:13,
from include/linux/interrupt_rc.h:17,
from include/linux/spinlock.h:60,
from include/linux/mmzone.h:8:
include/linux/sched.h: In function 'alloc_tag_save':
include/linux/sched.h:2361:14: error: 'current' undeclared (first use in this function)
2361 | swap(current->alloc_tag, tag);
| ^~~~~~~
include/linux/minmax.h:308:21: note: in definition of macro 'swap'
308 | do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
| ^
>> include/linux/minmax.h:308:52: error: assignment to 'struct alloc_tag *' from 'int' makes pointer from integer without a cast [-Wint-conversion]
308 | do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
| ^
include/linux/sched.h:2361:9: note: in expansion of macro 'swap'
2361 | swap(current->alloc_tag, tag);
| ^~~~
include/linux/sched.h: In function 'alloc_tag_restore':
include/linux/sched.h:2368:14: error: 'current' undeclared (first use in this function)
2368 | WARN(current->alloc_tag != tag, "current->alloc_tag was changed:\n");
| ^~~~~~~
include/asm-generic/bug.h:164:32: note: in definition of macro 'WARN'
164 | int __ret_warn_on = !!(condition); \
| ^~~~~~~~~
In file included from <command-line>:
include/linux/rcupdate.h: In function 'cond_resched_tasks_rcu_qs':
>> include/linux/rcupdate.h:226:22: error: 'current' undeclared (first use in this function)
226 | rcu_tasks_qs(current, false);
| ^~~~~~~
include/linux/compiler_types.h:682:23: note: in definition of macro '__compiletime_assert'
682 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:702:9: note: in expansion of macro '_compiletime_assert'
702 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:185:35: note: in expansion of macro 'READ_ONCE'
185 | if (!(preempt) && READ_ONCE((t)->rcu_tasks_holdout)) \
| ^~~~~~~~~
include/linux/rcupdate.h:197:34: note: in expansion of macro 'rcu_tasks_classic_qs'
197 | #define rcu_tasks_qs(t, preempt) rcu_tasks_classic_qs((t), (preempt))
| ^~~~~~~~~~~~~~~~~~~~
include/linux/rcupdate.h:226:9: note: in expansion of macro 'rcu_tasks_qs'
226 | rcu_tasks_qs(current, false);
| ^~~~~~~~~~~~
In file included from include/linux/local_lock.h:5,
from include/linux/mmzone.h:24:
include/linux/local_lock_internal.h: In function 'local_lock_acquire':
>> include/linux/local_lock_internal.h:48:20: error: 'current' undeclared (first use in this function)
48 | l->owner = current;
| ^~~~~~~
include/linux/local_lock_internal.h: In function 'local_trylock_acquire':
include/linux/local_lock_internal.h:55:20: error: 'current' undeclared (first use in this function)
55 | l->owner = current;
| ^~~~~~~
In file included from include/linux/build_bug.h:5,
from lib/lz4/lz4_deps.h:18,
from lib/lz4/lz4_compress.c:16:
include/linux/local_lock_internal.h: In function 'local_lock_release':
include/linux/local_lock_internal.h:60:41: error: 'current' undeclared (first use in this function)
60 | DEBUG_LOCKS_WARN_ON(l->owner != current);
| ^~~~~~~
include/linux/compiler.h:77:45: note: in definition of macro 'unlikely'
77 | # define unlikely(x) __builtin_expect(!!(x), 0)
| ^
include/linux/local_lock_internal.h:60:9: note: in expansion of macro 'DEBUG_LOCKS_WARN_ON'
60 | DEBUG_LOCKS_WARN_ON(l->owner != current);
| ^~~~~~~~~~~~~~~~~~~
include/linux/sched/mm.h: In function 'current_gfp_context':
>> include/linux/sched/mm.h:250:41: error: 'current' undeclared (first use in this function)
250 | unsigned int pflags = READ_ONCE(current->flags);
| ^~~~~~~
include/linux/compiler_types.h:682:23: note: in definition of macro '__compiletime_assert'
682 | if (!(condition)) \
| ^~~~~~~~~
include/linux/compiler_types.h:702:9: note: in expansion of macro '_compiletime_assert'
702 | _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
| ^~~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:9: note: in expansion of macro 'compiletime_assert'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~~~~~~
include/asm-generic/rwonce.h:36:28: note: in expansion of macro '__native_word'
36 | compiletime_assert(__native_word(t) || sizeof(t) == sizeof(long long), \
| ^~~~~~~~~~~~~
include/asm-generic/rwonce.h:49:9: note: in expansion of macro 'compiletime_assert_rwonce_type'
49 | compiletime_assert_rwonce_type(x); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/mm.h:250:31: note: in expansion of macro 'READ_ONCE'
250 | unsigned int pflags = READ_ONCE(current->flags);
| ^~~~~~~~~
include/linux/sched/mm.h: In function 'memalloc_retry_wait':
include/linux/sched.h:170:17: error: 'current' undeclared (first use in this function)
170 | current->task_state_change = _THIS_IP_; \
| ^~~~~~~
include/linux/sched.h:242:17: note: in expansion of macro 'debug_normal_state_change'
242 | debug_normal_state_change((state_value)); \
| ^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/sched/mm.h:293:9: note: in expansion of macro '__set_current_state'
293 | __set_current_state(TASK_UNINTERRUPTIBLE);
| ^~~~~~~~~~~~~~~~~~~
In file included from include/linux/xarray.h:21,
from include/linux/radix-tree.h:21,
from include/linux/idr.h:15,
from include/linux/kernfs.h:12,
from include/linux/sysfs.h:16,
from include/linux/kobject.h:20,
from include/linux/module.h:22:
include/linux/sched/mm.h: In function 'might_alloc':
include/linux/sched/mm.h:319:13: error: 'current' undeclared (first use in this function)
319 | if (current->flags & PF_MEMALLOC)
| ^~~~~~~
include/linux/sched/mm.h: In function 'memalloc_flags_save':
include/linux/sched/mm.h:334:30: error: 'current' undeclared (first use in this function)
334 | unsigned oldflags = ~current->flags & flags;
| ^~~~~~~
include/linux/sched/mm.h: In function 'memalloc_flags_restore':
include/linux/sched/mm.h:341:9: error: 'current' undeclared (first use in this function)
341 | current->flags &= ~flags;
| ^~~~~~~
include/linux/sched/mm.h: In function 'set_active_memcg':
include/linux/sched/mm.h:499:23: error: 'current' undeclared (first use in this function)
499 | old = current->active_memcg;
| ^~~~~~~
include/linux/sched/mm.h: In function 'membarrier_mm_sync_core_before_usermode':
include/linux/sched/mm.h:543:13: error: 'current' undeclared (first use in this function)
543 | if (current->mm != mm)
| ^~~~~~~
vim +308 include/linux/minmax.h
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 285)
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 286) /**
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 287) * in_range - Determine if a value lies within a range.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 288) * @val: Value to test.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 289) * @start: First value in range.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 290) * @len: Number of values in range.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 291) *
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 292) * This is more efficient than "if (start <= val && val < (start + len))".
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 293) * It also gives a different answer if @start + @len overflows the size of
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 294) * the type by a sufficient amount to encompass @val. Decide for yourself
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 295) * which behaviour you want, or prove that start + len never overflow.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 296) * Do not blindly replace one form with the other.
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 297) */
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 298) #define in_range(val, start, len) \
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 299) ((sizeof(start) | sizeof(len) | sizeof(val)) <= sizeof(u32) ? \
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 300) in_range32(val, start, len) : in_range64(val, start, len))
f9bff0e31881d03 Matthew Wilcox (Oracle 2023-08-02 301)
b296a6d53339a79 Andy Shevchenko 2020-10-15 302 /**
b296a6d53339a79 Andy Shevchenko 2020-10-15 303 * swap - swap values of @a and @b
b296a6d53339a79 Andy Shevchenko 2020-10-15 304 * @a: first value
b296a6d53339a79 Andy Shevchenko 2020-10-15 305 * @b: second value
b296a6d53339a79 Andy Shevchenko 2020-10-15 306 */
b296a6d53339a79 Andy Shevchenko 2020-10-15 307 #define swap(a, b) \
b296a6d53339a79 Andy Shevchenko 2020-10-15 @308 do { typeof(a) __tmp = (a); (a) = (b); (b) = __tmp; } while (0)
b296a6d53339a79 Andy Shevchenko 2020-10-15 309
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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