next-20240715: WARNING: at kernel/cpu.c:527 lockdep_assert_cpus_held (kernel/cpu.c:527 (discriminator 7) kernel/cpu.c:516 (discriminator 7))

[Naresh Kamboju]

The following kernel warnings are noticed on today's Linux next-20240715 tag
on the arm64 Raspberry Pi 4 Model B and x86_64 devices while booting.

This is always reproducible: yes.

  GOOD: next-20240712
  BAD:  next-20240715

Reported-by: Linux Kernel Functional Testing <lkft@xxxxxxxxxx>

Warning log:
----
[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd083]
[    0.000000] Linux version 6.10.0-next-20240715 (tuxmake@tuxmake)
(aarch64-linux-gnu-gcc (Debian 13.2.0-12) 13.2.0, GNU ld (GNU Binutils
for Debian) 2.42) #1 SMP PREEMPT @1721032044
[    0.000000] KASLR disabled due to lack of seed
[    0.000000] Machine model: Raspberry Pi 4 Model B
...
[   33.796467] ------------[ cut here ]------------
[   33.801373] WARNING: CPU: 2 PID: 134 at kernel/cpu.c:527
lockdep_assert_cpus_held (kernel/cpu.c:527 (discriminator 7)
kernel/cpu.c:516 (discriminator 7))
[   33.801410] Modules linked in: dm_mod(+)
[   33.801428] CPU: 2 UID: 0 PID: 134 Comm: modprobe Not tainted
6.10.0-next-20240715 #1
[   33.801445] Hardware name: Raspberry Pi 4 Model B (DT)
[   33.801452] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[   33.801465] pc : lockdep_assert_cpus_held (kernel/cpu.c:527
(discriminator 7) kernel/cpu.c:516 (discriminator 7))
[   33.801479] lr : lockdep_assert_cpus_held (kernel/cpu.c:527
(discriminator 1))
[   33.801491] sp : ffff800087583560
[   33.801497] x29: ffff800087583560 x28: 0000000000000000 x27: 0000000000000000
[   33.801515] x26: ffff000046714c10 x25: ffff800084edb000 x24: 0000000000000008
[   33.801532] x23: ffff800082d10740 x22: ffff800084f12128 x21: ffff8000857a9a38
[   33.801547] x20: ffff000046714c00 x19: 0000000000020002 x18: 0000000000000000
[   33.801562] x17: ffff800080205c24 x16: ffff8000802058c4 x15: ffff800080204170
[   33.801577] x14: ffff8000800152dc x13: ffff800080011550 x12: ffff800081d31448
[   33.801592] x11: 000000000000002c x10: 000000000000002c x9 : ffff800080101d4c
[   33.801608] x8 : 00000000ffffffff x7 : 00000000000b663d x6 : ffff8000857afdd0
[   33.801623] x5 : 0000000000000000 x4 : 0000000000000001 x3 : ffff8000732be000
[   33.801638] x2 : 0000000000000000 x1 : 00000000000000c0 x0 : 0000000000000000
[   33.801652] Call trace:
[   33.801658] lockdep_assert_cpus_held (kernel/cpu.c:527
(discriminator 7) kernel/cpu.c:516 (discriminator 7))
[   33.801671] alloc_and_link_pwqs (kernel/workqueue.c:5438)
[   33.801682] alloc_workqueue (kernel/workqueue.c:5703 (discriminator 1))
[   33.801692] local_init+0x34/0xc0 dm_mod
[   33.801805] dm_init+0x54/0xf8 dm_mod
[   33.801900] do_one_initcall (init/main.c:1267)
[   33.801916] do_init_module (kernel/module/main.c:2543)
[   33.801930] load_module (kernel/module/main.c:3009)
[   33.801942] init_module_from_file (kernel/module/main.c:3177)
[   33.801955] idempotent_init_module (kernel/module/main.c:3193)
[   33.801968] __arm64_sys_finit_module (kernel/module/main.c:3214
kernel/module/main.c:3197 kernel/module/main.c:3197)
[   33.801980] invoke_syscall (arch/arm64/include/asm/current.h:19
arch/arm64/kernel/syscall.c:54)
[   33.801990] el0_svc_common (include/linux/thread_info.h:127
(discriminator 2) arch/arm64/kernel/syscall.c:140 (discriminator 2))
[   33.801999] do_el0_svc (arch/arm64/kernel/syscall.c:152)
[   33.802008] el0_svc (arch/arm64/include/asm/irqflags.h:82
(discriminator 1) arch/arm64/include/asm/irqflags.h:123 (discriminator
1) arch/arm64/include/asm/irqflags.h:136 (discriminator 1)
arch/arm64/kernel/entry-common.c:165 (discriminator 1)
arch/arm64/kernel/entry-common.c:178 (discriminator 1)
arch/arm64/kernel/entry-common.c:713 (discriminator 1))
[   33.802020] el0t_64_sync_handler (arch/arm64/kernel/entry-common.c:731)
[   33.802032] el0t_64_sync (arch/arm64/kernel/entry.S:598)
[   33.802042] irq event stamp: 35480
[   33.802046] hardirqs last enabled at (35479):
_raw_spin_unlock_irqrestore (arch/arm64/include/asm/irqflags.h:82
(discriminator 1) arch/arm64/include/asm/irqflags.h:123 (discriminator
1) arch/arm64/include/asm/irqflags.h:136 (discriminator 1)
include/linux/spinlock_api_smp.h:151 (discriminator 1)
kernel/locking/spinlock.c:194 (discriminator 1))
[   33.802064] hardirqs last disabled at (35480): el1_dbg
(arch/arm64/kernel/entry-common.c:371 (discriminator 1)
arch/arm64/kernel/entry-common.c:471 (discriminator 1))
[   33.802077] softirqs last enabled at (35456): handle_softirqs
(arch/arm64/include/asm/current.h:19
arch/arm64/include/asm/preempt.h:13 kernel/softirq.c:401
kernel/softirq.c:582)
[   33.802096] softirqs last disabled at (35389): __do_softirq
(kernel/softirq.c:589)
[   33.802107] ---[ end trace 0000000000000000 ]---


metadata:
------
  git_ref: master
  git_repo: https://gitlab.com/Linaro/lkft/mirrors/next/linux-next
  git_sha: 91e3b24eb7d297d9d99030800ed96944b8652eaf
  git_describe: next-20240715
  kernel_version: 6.10.0
  kernel-config:
    https://storage.tuxsuite.com/public/linaro/lkft/builds/2jH6dXP5XS72ybkPa57keKJ7q3z/config
  artifact-location:
    https://storage.tuxsuite.com/public/linaro/lkft/builds/2jH6dXP5XS72ybkPa57keKJ7q3z/
  toolchain: gcc-13
  build_name: gcc-13-lkftconfig-kselftest
  arch: arm64 and x86_64

Kernel boot log links:
-------
 [1] https://lkft.validation.linaro.org/scheduler/job/7729587#L844
 [2] https://lkft.validation.linaro.org/scheduler/job/7728947#L1742

--
Linaro LKFT
https://lkft.linaro.org