From: Mark Brown <broonie@kernel.org>
To: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Next Mailing List <linux-next@vger.kernel.org>
Subject: linux-next: build failure after merge of the paulmck tree
Date: Fri, 31 Jul 2026 15:49:38 +0100 [thread overview]
Message-ID: <amy2ApH8MZnll3Ff@sirena.org.uk> (raw)
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Hi all,
After merging the paulmck tree, today's linux-next build
(arm64 allnoconfig) failed like this:
In file included from /tmp/next/build/arch/arm64/include/asm/rwonce.h:81,
from /tmp/next/build/include/linux/compiler.h:369,
from /tmp/next/build/include/linux/proc_fs.h:8,
from /tmp/next/build/kernel/time/timer_list.c:8:
/tmp/next/build/kernel/time/timer_list.c: In function 'print_base':
/tmp/next/build/include/asm-generic/rwonce.h:44:71: error: lvalue required as unary '&' operand
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
/tmp/next/build/include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
/tmp/next/build/kernel/time/timer_list.c:102:52: note: in expansion of macro 'READ_ONCE'
102 | SEQ_printf(m, " .resolution: %u nsecs\n", READ_ONCE(hrtimer_resolution));
| ^~~~~~~~~
make[5]: *** [/tmp/next/build/scripts/Makefile.build:290: kernel/time/timer_list.o] Error 1
make[5]: *** Waiting for unfinished jobs....
In file included from /tmp/next/build/arch/arm64/include/asm/rwonce.h:81,
from /tmp/next/build/include/linux/compiler.h:369,
from /tmp/next/build/include/linux/build_bug.h:5,
from /tmp/next/build/include/linux/bits.h:30,
from /tmp/next/build/include/linux/bitops.h:6,
from /tmp/next/build/arch/arm64/include/asm/cache.h:40,
from /tmp/next/build/include/vdso/cache.h:5,
from /tmp/next/build/include/linux/cache.h:6,
from /tmp/next/build/include/linux/time.h:5,
from /tmp/next/build/kernel/time/alarmtimer.c:15:
/tmp/next/build/kernel/time/alarmtimer.c: In function 'alarm_clock_getres':
/tmp/next/build/include/asm-generic/rwonce.h:44:71: error: lvalue required as unary '&' operand
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
/tmp/next/build/include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
/tmp/next/build/kernel/time/alarmtimer.c:606:23: note: in expansion of macro 'READ_ONCE'
606 | tp->tv_nsec = READ_ONCE(hrtimer_resolution);
| ^~~~~~~~~
make[5]: *** [/tmp/next/build/scripts/Makefile.build:290: kernel/time/alarmtimer.o] Error 1
In file included from /tmp/next/build/arch/arm64/include/asm/rwonce.h:81,
from /tmp/next/build/include/linux/compiler.h:369,
from /tmp/next/build/include/linux/dev_printk.h:14,
from /tmp/next/build/include/linux/device.h:15,
from /tmp/next/build/include/linux/node.h:18,
from /tmp/next/build/include/linux/cpu.h:17,
from /tmp/next/build/kernel/time/hrtimer.c:25:
/tmp/next/build/kernel/time/hrtimer.c: In function 'hrtimer_forward':
/tmp/next/build/include/asm-generic/rwonce.h:44:71: error: lvalue required as unary '&' operand
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
/tmp/next/build/include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
/tmp/next/build/kernel/time/hrtimer.c:1100:15: note: in expansion of macro 'READ_ONCE'
1100 | res = READ_ONCE(hrtimer_resolution);
| ^~~~~~~~~
make[5]: *** [/tmp/next/build/scripts/Makefile.build:290: kernel/time/hrtimer.o] Error 1
In file included from /tmp/next/build/arch/arm64/include/asm/rwonce.h:81,
from /tmp/next/build/include/linux/compiler.h:369,
from /tmp/next/build/include/linux/build_bug.h:5,
from /tmp/next/build/include/linux/bits.h:30,
from /tmp/next/build/include/linux/bitops.h:6,
from /tmp/next/build/arch/arm64/include/asm/cache.h:40,
from /tmp/next/build/include/vdso/cache.h:5,
from /tmp/next/build/include/linux/cache.h:6,
from /tmp/next/build/include/linux/time.h:5,
from /tmp/next/build/include/linux/compat.h:10,
from /tmp/next/build/kernel/time/posix-timers.c:12:
/tmp/next/build/kernel/time/posix-timers.c: In function 'posix_get_hrtimer_res':
/tmp/next/build/include/asm-generic/rwonce.h:44:71: error: lvalue required as unary '&' operand
44 | #define __READ_ONCE(x) (*(const volatile __unqual_scalar_typeof(x) *)&(x))
| ^
/tmp/next/build/include/asm-generic/rwonce.h:50:9: note: in expansion of macro '__READ_ONCE'
50 | __READ_ONCE(x); \
| ^~~~~~~~~~~
/tmp/next/build/kernel/time/posix-timers.c:275:23: note: in expansion of macro 'READ_ONCE'
275 | tp->tv_nsec = READ_ONCE(hrtimer_resolution);
| ^~~~~~~~~
Caused by commit
84f2a4fba1353 (hrtimer: Apply {READ,WRITE}_ONCE() to hrtimer_resolution accesses)
I used the tree from next-20260730 instead.
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next reply other threads:[~2026-07-31 14:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-31 14:49 Mark Brown [this message]
2026-07-31 16:15 ` linux-next: build failure after merge of the paulmck tree Paul E. McKenney
-- strict thread matches above, loose matches on Subject: below --
2024-06-19 13:49 Mark Brown
2024-06-19 17:29 ` Paul E. McKenney
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