From: Stephen Rothwell <sfr@canb•auug.org.au>
To: Daniel Borkmann <daniel@iogearbox•net>,
Alexei Starovoitov <ast@kernel•org>,
Andrii Nakryiko <andrii@kernel•org>,
Andrew Morton <akpm@linux-foundation•org>
Cc: Uros Bizjak <ubizjak@gmail•com>, bpf <bpf@vger•kernel.org>,
Networking <netdev@vger•kernel.org>,
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 bpf-next tree
Date: Wed, 19 Mar 2025 13:33:09 +1100 [thread overview]
Message-ID: <20250319133309.6fce6404@canb.auug.org.au> (raw)
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Hi all,
After merging the bpf-next tree, today's linux-next build (x86_64
allmodconfig) failed like this:
In file included from include/asm-generic/percpu.h:7,
from arch/x86/include/asm/percpu.h:630,
from arch/x86/include/asm/preempt.h:6,
from include/linux/preempt.h:79,
from include/linux/smp.h:116,
from kernel/locking/qspinlock.c:16:
kernel/locking/qspinlock.h: In function 'decode_tail':
include/linux/percpu-defs.h:219:45: error: initialization from pointer to non-enclosed address space
219 | const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
| ^
include/linux/percpu-defs.h:237:9: note: in expansion of macro '__verify_pcpu_ptr'
237 | __verify_pcpu_ptr(ptr); \
| ^~~~~~~~~~~~~~~~~
kernel/locking/qspinlock.h:67:16: note: in expansion of macro 'per_cpu_ptr'
67 | return per_cpu_ptr(&qnodes[idx].mcs, cpu);
| ^~~~~~~~~~~
include/linux/percpu-defs.h:219:45: note: expected 'const __seg_gs void *' but pointer is of type 'struct mcs_spinlock *'
219 | const void __percpu *__vpp_verify = (typeof((ptr) + 0))NULL; \
| ^
include/linux/percpu-defs.h:237:9: note: in expansion of macro '__verify_pcpu_ptr'
237 | __verify_pcpu_ptr(ptr); \
| ^~~~~~~~~~~~~~~~~
kernel/locking/qspinlock.h:67:16: note: in expansion of macro 'per_cpu_ptr'
67 | return per_cpu_ptr(&qnodes[idx].mcs, cpu);
| ^~~~~~~~~~~
kernel/locking/qspinlock.c: In function 'native_queued_spin_lock_slowpath':
kernel/locking/qspinlock.c:285:41: error: passing argument 2 of 'decode_tail' from pointer to non-enclosed address space
285 | prev = decode_tail(old, qnodes);
| ^~~~~~
In file included from kernel/locking/qspinlock.c:30:
kernel/locking/qspinlock.h:62:79: note: expected 'struct qnode *' but argument is of type '__seg_gs struct qnode *'
62 | static inline __pure struct mcs_spinlock *decode_tail(u32 tail, struct qnode *qnodes)
| ~~~~~~~~~~~~~~^~~~~~
In file included from kernel/locking/qspinlock.c:401:
kernel/locking/qspinlock.c: In function '__pv_queued_spin_lock_slowpath':
kernel/locking/qspinlock.c:285:41: error: passing argument 2 of 'decode_tail' from pointer to non-enclosed address space
285 | prev = decode_tail(old, qnodes);
| ^~~~~~
kernel/locking/qspinlock.h:62:79: note: expected 'struct qnode *' but argument is of type '__seg_gs struct qnode *'
62 | static inline __pure struct mcs_spinlock *decode_tail(u32 tail, struct qnode *qnodes)
| ~~~~~~~~~~~~~~^~~~~~
Caused by the resilient-queued-spin-lock branch of the bpf-next tree
interacting with the "Enable strict percpu address space checks" series
form the mm-stable tree.
I don't know why this happens, but reverting that branch inf the bpf-next
tree makes the failure go away, so I have done that for today.
--
Cheers,
Stephen Rothwell
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next reply other threads:[~2025-03-19 2:33 UTC|newest]
Thread overview: 110+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-03-19 2:33 Stephen Rothwell [this message]
2025-03-19 2:46 ` linux-next: build failure after merge of the bpf-next tree Alexei Starovoitov
2025-03-19 3:28 ` Stephen Rothwell
2025-03-19 13:37 ` Kumar Kartikeya Dwivedi
2025-03-19 13:43 ` Kumar Kartikeya Dwivedi
2025-03-19 14:36 ` Kumar Kartikeya Dwivedi
2025-03-19 14:55 ` Alexei Starovoitov
2025-03-19 15:11 ` Alexei Starovoitov
2025-03-19 16:06 ` Uros Bizjak
2025-03-19 18:56 ` Alexei Starovoitov
2025-03-19 19:43 ` Uros Bizjak
2025-03-19 23:16 ` Alexei Starovoitov
2025-03-20 7:49 ` Uros Bizjak
2025-03-20 23:17 ` Alexei Starovoitov
2025-03-21 7:15 ` Uros Bizjak
2025-03-19 5:03 ` Uros Bizjak
-- strict thread matches above, loose matches on Subject: below --
2026-05-26 12:13 Mark Brown
2026-05-26 22:08 ` Alexei Starovoitov
2026-05-27 13:24 ` Mark Brown
2026-05-27 19:27 ` Tejun Heo
2026-04-27 13:26 Thierry Reding
2026-04-27 13:34 ` Thierry Reding
2026-04-27 13:43 ` Alan Maguire
2025-03-12 3:52 Stephen Rothwell
2024-10-16 6:05 Stephen Rothwell
2024-10-16 16:25 ` Alexei Starovoitov
2024-10-16 18:35 ` Namhyung Kim
2024-10-16 19:32 ` Alexei Starovoitov
2024-09-13 3:55 Stephen Rothwell
2024-09-13 4:00 ` Al Viro
2024-09-13 4:26 ` Andrii Nakryiko
2024-09-13 4:43 ` Al Viro
2024-09-15 23:30 ` Stephen Rothwell
2024-09-13 3:45 Stephen Rothwell
2024-09-13 3:48 ` Stephen Rothwell
2024-09-15 23:27 ` Stephen Rothwell
2024-09-13 3:32 Stephen Rothwell
2024-09-15 23:26 ` Stephen Rothwell
2024-08-14 1:25 Stephen Rothwell
2024-08-14 1:41 ` Al Viro
2024-08-14 2:37 ` Stephen Rothwell
2024-08-14 14:50 ` Christian Brauner
2024-08-30 1:32 ` Stephen Rothwell
2024-08-14 1:18 Stephen Rothwell
2024-06-17 18:15 Mark Brown
2024-06-22 8:17 ` kernel test robot
2024-06-22 8:28 ` kernel test robot
2024-06-25 1:22 ` Thinker Li
2024-06-25 15:54 ` Benjamin Tissoires
2024-06-25 16:03 ` Mark Brown
2024-06-25 17:14 ` Alexei Starovoitov
2024-06-27 7:14 ` Benjamin Tissoires
2024-07-09 23:13 ` Stephen Rothwell
2024-07-18 1:49 ` Stephen Rothwell
2024-07-18 7:42 ` Benjamin Tissoires
2023-03-19 23:26 Stephen Rothwell
2023-03-20 12:07 ` Alexander Lobakin
2023-03-21 22:35 ` Stephen Rothwell
2022-07-20 1:59 Stephen Rothwell
2022-07-20 3:42 ` Alexei Starovoitov
2022-07-20 3:44 ` Stanislav Fomichev
2022-04-19 1:56 Stephen Rothwell
2022-04-21 0:32 ` Stephen Rothwell
2022-04-21 9:45 ` Daniel Borkmann
2022-04-21 10:40 ` Maciej Fijalkowski
2022-02-09 0:21 Stephen Rothwell
2021-12-03 0:15 Stephen Rothwell
2021-09-14 1:37 Stephen Rothwell
2021-09-14 23:25 ` Andrii Nakryiko
2021-09-14 23:38 ` Stephen Rothwell
2021-09-14 23:40 ` Andrii Nakryiko
2021-09-14 23:59 ` Stephen Rothwell
2021-09-15 1:27 ` Alexei Starovoitov
2021-08-26 1:50 Stephen Rothwell
2021-08-26 2:01 ` Daniel Xu
2021-03-11 0:47 Stephen Rothwell
2021-03-11 6:47 ` Björn Töpel
2021-03-12 1:00 ` Stephen Rothwell
2021-03-26 1:18 ` Stephen Rothwell
2020-12-01 8:07 Stephen Rothwell
2020-12-01 14:55 ` Daniel Borkmann
2020-09-08 3:08 Stephen Rothwell
2020-09-08 17:54 ` Andrii Nakryiko
2020-08-21 1:11 Stephen Rothwell
2020-08-25 1:20 ` Stephen Rothwell
2020-08-25 1:25 ` Alexei Starovoitov
2020-08-25 3:04 ` Stephen Rothwell
2020-08-25 3:27 ` Alexei Starovoitov
2020-08-25 6:50 ` Stephen Rothwell
2020-08-25 14:33 ` Alexei Starovoitov
2020-08-25 21:10 ` Stephen Rothwell
2020-08-25 22:34 ` Alexei Starovoitov
2020-08-25 23:09 ` Stephen Rothwell
2020-07-14 2:22 Stephen Rothwell
2020-07-14 6:16 ` Jiri Olsa
2020-07-14 8:31 ` Jiri Olsa
2020-07-14 9:19 ` Geert Uytterhoeven
2019-07-01 4:57 Stephen Rothwell
2019-07-01 5:01 ` Stephen Rothwell
2019-04-18 1:57 Stephen Rothwell
2019-02-28 1:31 Stephen Rothwell
2019-02-28 2:18 ` Alexei Starovoitov
2018-10-03 3:18 Stephen Rothwell
2018-10-03 5:29 ` Joe Stringer
2018-09-07 0:19 Stephen Rothwell
2018-09-07 0:22 ` Alexei Starovoitov
2018-09-07 5:21 ` Björn Töpel
2018-09-07 5:45 ` Alexei Starovoitov
2017-12-13 1:32 Stephen Rothwell
2017-12-13 1:47 ` Alexei Starovoitov
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