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From: kernel test robot <oliver.sang@intel.com>
To: JP Kobryn <inwardvessel@gmail.com>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
	Johannes Weiner <hannes@cmpxchg.org>, <linux-mm@kvack.org>,
	<apopple@nvidia.com>, <akpm@linux-foundation.org>,
	<axelrasmussen@google.com>, <byungchul@sk.com>,
	<cgroups@vger.kernel.org>, <david@kernel.org>,
	<eperezma@redhat.com>, <gourry@gourry.net>, <jasowang@redhat.com>,
	<joshua.hahnjy@gmail.com>, <Liam.Howlett@oracle.com>,
	<linux-kernel@vger.kernel.org>, <lorenzo.stoakes@oracle.com>,
	<matthew.brost@intel.com>, <mst@redhat.com>, <mhocko@suse.com>,
	<rppt@kernel.org>, <muchun.song@linux.dev>,
	<zhengqi.arch@bytedance.com>, <rakie.kim@sk.com>,
	<roman.gushchin@linux.dev>, <shakeel.butt@linux.dev>,
	<surenb@google.com>, <virtualization@lists.linux.dev>,
	<vbabka@suse.cz>, <weixugc@google.com>,
	<xuanzhuo@linux.alibaba.com>, <ying.huang@linux.alibaba.com>,
	<yuanchu@google.com>, <ziy@nvidia.com>, <kernel-team@meta.com>,
	<oliver.sang@intel.com>
Subject: Re: [PATCH 1/2] mm/mempolicy: track page allocations per mempolicy
Date: Wed, 18 Feb 2026 12:25:01 +0800	[thread overview]
Message-ID: <202602181136.f66ba888-lkp@intel.com> (raw)
In-Reply-To: <20260212045109.255391-2-inwardvessel@gmail.com>



Hello,

kernel test robot noticed "RIP:__mod_node_page_state" on:

commit: 4b5f69459c0988d3b292aceb74633e04eea84c7f ("[PATCH 1/2] mm/mempolicy: track page allocations per mempolicy")
url: https://github.com/intel-lab-lkp/linux/commits/JP-Kobryn/mm-mempolicy-track-page-allocations-per-mempolicy/20260212-142941
base: https://git.kernel.org/cgit/linux/kernel/git/akpm/mm.git mm-everything
patch link: https://lore.kernel.org/all/20260212045109.255391-2-inwardvessel@gmail.com/
patch subject: [PATCH 1/2] mm/mempolicy: track page allocations per mempolicy

in testcase: boot

config: x86_64-randconfig-007-20250327
compiler: gcc-14
test machine: qemu-system-x86_64 -enable-kvm -cpu SandyBridge -smp 2 -m 32G

(please refer to attached dmesg/kmsg for entire log/backtrace)


+------------------------------------------------------------------+------------+------------+
|                                                                  | 5cbf93e36f | 4b5f69459c |
+------------------------------------------------------------------+------------+------------+
| boot_successes                                                   | 244        | 0          |
| boot_failures                                                    | 0          | 244        |
| RIP:__mod_node_page_state                                        | 0          | 244        |
| BUG:using__this_cpu_read()in_preemptible                         | 0          | 244        |
| BUG:using__this_cpu_write()in_preemptible[#]code:kthreadd        | 0          | 244        |
| BUG:using__this_cpu_write()in_preemptible[#]code:swapper         | 0          | 187        |
| BUG:using__this_cpu_write()in_preemptible[#]code:kdevtmpfs       | 0          | 79         |
| BUG:using__this_cpu_write()in_preemptible[#]code:kworker/u8      | 0          | 229        |
| BUG:using__this_cpu_write()in_preemptible[#]code:udevd           | 0          | 62         |
| BUG:using__this_cpu_write()in_preemptible[#]code:tail            | 0          | 21         |
| BUG:using__this_cpu_write()in_preemptible[#]code:syslogd         | 0          | 54         |
| BUG:using__this_cpu_write()in_preemptible[#]code:klogd           | 0          | 113        |
| BUG:using__this_cpu_write()in_preemptible[#]code:sleep           | 0          | 98         |
| BUG:using__this_cpu_write()in_preemptible[#]code:post-run        | 0          | 39         |
| BUG:using__this_cpu_write()in_preemptible[#]code:rsync           | 0          | 9          |
| BUG:using__this_cpu_write()in_preemptible[#]code:modprobe        | 0          | 6          |
| BUG:using__this_cpu_write()in_preemptible[#]code                 | 0          | 32         |
| BUG:using__this_cpu_write()in_preemptible[#]code:udevadm         | 0          | 78         |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd         | 0          | 39         |
| BUG:using__this_cpu_write()in_preemptible[#]code:(udev-worker)   | 0          | 53         |
| RIP:rep_movs_alternative                                         | 0          | 5          |
| BUG:using__this_cpu_write()in_preemptible[#]code:cat             | 0          | 7          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sed             | 0          | 98         |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-udevd   | 0          | 19         |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-journal | 0          | 54         |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-random  | 0          | 4          |
| BUG:using__this_cpu_write()in_preemptible[#]code:journalctl      | 0          | 8          |
| BUG:using__this_cpu_write()in_preemptible[#]code:start_getty     | 0          | 4          |
| RIP:__put_user_4                                                 | 0          | 24         |
| BUG:using__this_cpu_write()in_preemptible[#]code:wget            | 0          | 82         |
| BUG:using__this_cpu_write()in_preemptible[#]code:run-lkp         | 0          | 32         |
| BUG:using__this_cpu_write()in_preemptible[#]code:boot-#-yocto-i3 | 0          | 24         |
| BUG:using__this_cpu_write()in_preemptible[#]code:one-shot-monito | 0          | 4          |
| BUG:using__this_cpu_write()in_preemptible[#]code:vmstat          | 0          | 29         |
| BUG:using__this_cpu_write()in_preemptible[#]code:rs:main_Q:Reg   | 0          | 9          |
| RIP:rep_stos_alternative                                         | 0          | 11         |
| BUG:using__this_cpu_write()in_preemptible[#]code:lkp-setup-rootf | 0          | 21         |
| BUG:using__this_cpu_write()in_preemptible[#]code:stty            | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:tee             | 0          | 7          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-rc-loca | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(exec-inner)    | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:groupadd        | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(sd-exec-strv)  | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:rc              | 0          | 14         |
| BUG:using__this_cpu_write()in_preemptible[#]code:getty           | 0          | 18         |
| BUG:using__this_cpu_write()in_preemptible[#]code:boot-#-debian   | 0          | 4          |
| BUG:using__this_cpu_write()in_preemptible[#]code:monitor         | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-tmpfile | 0          | 6          |
| BUG:using__this_cpu_write()in_preemptible[#]code:lscpu           | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:dirname         | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-sysuser | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(d-sysctl)      | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:mount           | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:ls              | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:pgrep           | 0          | 4          |
| BUG:using__this_cpu_write()in_preemptible[#]code:grep            | 0          | 8          |
| BUG:using__this_cpu_write()in_preemptible[#]code:S77lkp-bootstra | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:date            | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-sysctl  | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:find            | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sshd            | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-system  | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-sysv-ge | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-hiberna | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:journal-offline | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sysctl          | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:init            | 0          | 7          |
| BUG:using__this_cpu_write()in_preemptible[#]code:mkdir           | 0          | 6          |
| BUG:using__this_cpu_write()in_preemptible[#]code:mountpoint      | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-logind  | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:dmesg           | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-ssh-gen | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:cp              | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:wakeup          | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:dpkg-deb        | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:dpkg            | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(modprobe)      | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sync            | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-update  | 0          | 4          |
| BUG:using__this_cpu_write()in_preemptible[#]code:kmod            | 0          | 1          |
| RIP:strncpy_from_user                                            | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sm-notify       | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-remount | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:blkmapd         | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:mkfifo          | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:ln              | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:sh              | 0          | 5          |
| BUG:using__this_cpu_write()in_preemptible[#]code:bootlogd        | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:run-test        | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:S07bootlogd     | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:hwclock.sh      | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(sd-mkdcreds)   | 0          | 1          |
| RIP:filldir64                                                    | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:chmod           | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:ps              | 0          | 3          |
| BUG:using__this_cpu_write()in_preemptible[#]code:which           | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:ip              | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:start-stop-daem | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:S20syslog       | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-gpt-aut | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-debug-g | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(rpcbind)       | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:seq             | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-run-gen | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:wait            | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:addgroup        | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:rm              | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:in:imklog       | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:basename        | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:touch           | 0          | 1          |
| RIP:ia32_setup_frame                                             | 0          | 2          |
| BUG:using__this_cpu_write()in_preemptible[#]code:no-stdout-monit | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:systemd-tpm#-ge | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:(mount)         | 0          | 1          |
| BUG:using__this_cpu_write()in_preemptible[#]code:ldconfig        | 0          | 1          |
+------------------------------------------------------------------+------------+------------+

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 <oliver.sang@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202602181136.f66ba888-lkp@intel.com



[    0.624787][    T2] ------------[ cut here ]------------
[    0.625191][    T2] WARNING: mm/vmstat.c:396 at __mod_node_page_state+0x88/0x1c0, CPU#0: kthreadd/2
[    0.625887][    T2] Modules linked in:
[    0.626070][    T2] CPU: 0 UID: 0 PID: 2 Comm: kthreadd Tainted: G                T   6.19.0-rc6-00596-g4b5f69459c09 #1 PREEMPT(lazy)  a55f7fce8adbfb8e52612c1f0ea71f4db1a1df23
[    0.626084][    T2] Tainted: [T]=RANDSTRUCT
[    0.626402][    T2] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[    0.627150][    T2] RIP: 0010:__mod_node_page_state (mm/vmstat.c:396 (discriminator 34))
[    0.627592][    T2] Code: 8b 05 88 b9 73 02 48 c7 c7 d8 b0 b4 83 85 c0 89 45 d0 40 0f 95 c6 31 c9 31 d2 40 0f b6 f6 e8 3f 96 e4 ff 8b 45 d0 85 c0 74 1b <0f> 0b be 01 00 00 00 eb 14 31 c9 31 d2 31 f6 48 c7 c7 d8 b0 b4 83
All code
========
   0:	8b 05 88 b9 73 02    	mov    0x273b988(%rip),%eax        # 0x273b98e
   6:	48 c7 c7 d8 b0 b4 83 	mov    $0xffffffff83b4b0d8,%rdi
   d:	85 c0                	test   %eax,%eax
   f:	89 45 d0             	mov    %eax,-0x30(%rbp)
  12:	40 0f 95 c6          	setne  %sil
  16:	31 c9                	xor    %ecx,%ecx
  18:	31 d2                	xor    %edx,%edx
  1a:	40 0f b6 f6          	movzbl %sil,%esi
  1e:	e8 3f 96 e4 ff       	call   0xffffffffffe49662
  23:	8b 45 d0             	mov    -0x30(%rbp),%eax
  26:	85 c0                	test   %eax,%eax
  28:	74 1b                	je     0x45
  2a:*	0f 0b                	ud2		<-- trapping instruction
  2c:	be 01 00 00 00       	mov    $0x1,%esi
  31:	eb 14                	jmp    0x47
  33:	31 c9                	xor    %ecx,%ecx
  35:	31 d2                	xor    %edx,%edx
  37:	31 f6                	xor    %esi,%esi
  39:	48 c7 c7 d8 b0 b4 83 	mov    $0xffffffff83b4b0d8,%rdi

Code starting with the faulting instruction
===========================================
   0:	0f 0b                	ud2
   2:	be 01 00 00 00       	mov    $0x1,%esi
   7:	eb 14                	jmp    0x1d
   9:	31 c9                	xor    %ecx,%ecx
   b:	31 d2                	xor    %edx,%edx
   d:	31 f6                	xor    %esi,%esi
   f:	48 c7 c7 d8 b0 b4 83 	mov    $0xffffffff83b4b0d8,%rdi
[    0.629418][    T2] RSP: 0000:ffff88810039fa20 EFLAGS: 00010202
[    0.629869][    T2] RAX: 0000000000000001 RBX: 0000000000000002 RCX: 0000000000000000
[    0.630445][    T2] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
[    0.631089][    T2] RBP: ffff88810039fa50 R08: 0000000000000000 R09: 0000000000000000
[    0.631671][    T2] R10: 0000000000000000 R11: 0000000000000000 R12: ffff88883ffe02c0
[    0.632247][    T2] R13: ffffffff83f18971 R14: ffffffff83f18940 R15: 0000000000000030
[    0.632746][    T2] FS:  0000000000000000(0000) GS:ffff88889bd1c000(0000) knlGS:0000000000000000
[    0.633394][    T2] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.633875][    T2] CR2: ffff88883ffff000 CR3: 000000000343d000 CR4: 00000000000406b0
[    0.634478][    T2] Call Trace:
[    0.634723][    T2]  <TASK>
[    0.634951][    T2]  alloc_pages_mpol (mm/mempolicy.c:2513 (discriminator 1))
[    0.635326][    T2]  alloc_frozen_pages_noprof (mm/mempolicy.c:2584)
[    0.635746][    T2]  allocate_slab (mm/slub.c:3075 (discriminator 2) mm/slub.c:3248 (discriminator 2))
[    0.636086][    T2]  new_slab (mm/slub.c:3304)
[    0.636394][    T2]  ___slab_alloc (mm/slub.c:4657)
[    0.636749][    T2]  ? dup_task_struct (kernel/fork.c:184 (discriminator 2) kernel/fork.c:915 (discriminator 2))
[    0.637114][    T2]  __slab_alloc+0x8a/0x180
[    0.637519][    T2]  slab_alloc_node+0x189/0x340
[    0.637919][    T2]  ? dup_task_struct (kernel/fork.c:184 (discriminator 2) kernel/fork.c:915 (discriminator 2))
[    0.638285][    T2]  kmem_cache_alloc_node_noprof (mm/slub.c:5317 (discriminator 1))
[    0.638710][    T2]  dup_task_struct (kernel/fork.c:184 (discriminator 2) kernel/fork.c:915 (discriminator 2))
[    0.639058][    T2]  ? ftrace_likely_update (arch/x86/include/asm/smap.h:90 kernel/trace/trace_branch.c:223)
[    0.639416][    T2]  copy_process (kernel/fork.c:2052 (discriminator 1))
[    0.639773][    T2]  kernel_clone (include/linux/random.h:26 kernel/fork.c:2652)
[    0.640115][    T2]  ? kthread_fetch_affinity (kernel/kthread.c:412)
[    0.640552][    T2]  kernel_thread (kernel/fork.c:2713)
[    0.640892][    T2]  ? kthread_fetch_affinity (kernel/kthread.c:412)
[    0.641310][    T2]  kthreadd (kernel/kthread.c:486 kernel/kthread.c:844)
[    0.641621][    T2]  ? kthreadd (kernel/kthread.c:830 (discriminator 5))
[    0.641938][    T2]  ? kthread_is_per_cpu (kernel/kthread.c:816)
[    0.642316][    T2]  ret_from_fork (arch/x86/kernel/process.c:164)
[    0.642657][    T2]  ? kthread_is_per_cpu (kernel/kthread.c:816)
[    0.642744][    T2]  ? kthread_is_per_cpu (kernel/kthread.c:816)
[    0.643127][    T2]  ret_from_fork_asm (arch/x86/entry/entry_64.S:256)
[    0.643502][    T2]  </TASK>
[    0.643755][    T2] irq event stamp: 393
[    0.644054][    T2] hardirqs last  enabled at (401): __up_console_sem (arch/x86/include/asm/irqflags.h:42 arch/x86/include/asm/irqflags.h:119 arch/x86/include/asm/irqflags.h:159 kernel/printk/printk.c:345)
[    0.644730][    T2] hardirqs last disabled at (408): __up_console_sem (kernel/printk/printk.c:343 (discriminator 3))
[    0.645406][    T2] softirqs last  enabled at (54): handle_softirqs (kernel/softirq.c:469 (discriminator 1) kernel/softirq.c:650 (discriminator 1))
[    0.646077][    T2] softirqs last disabled at (49): __irq_exit_rcu (kernel/softirq.c:657 kernel/softirq.c:496 kernel/softirq.c:723)
[    0.646741][    T2] ---[ end trace 0000000000000000 ]---


The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260218/202602181136.f66ba888-lkp@intel.com



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki



  parent reply	other threads:[~2026-02-18  4:25 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-02-12  4:51 [PATCH 0/2] improve per-node allocation and reclaim visibility JP Kobryn
2026-02-12  4:51 ` [PATCH 1/2] mm/mempolicy: track page allocations per mempolicy JP Kobryn
2026-02-12  7:29   ` Michal Hocko
2026-02-12 21:22     ` JP Kobryn
2026-02-16  8:26       ` Michal Hocko
2026-02-16 17:50         ` JP Kobryn (Meta)
2026-02-16 21:07           ` Michal Hocko
2026-02-17  7:48             ` JP Kobryn (Meta)
2026-02-17 12:37               ` Michal Hocko
2026-02-17 18:19                 ` JP Kobryn (Meta)
2026-02-17 18:52                   ` Michal Hocko
2026-02-12 15:07   ` Shakeel Butt
2026-02-12 21:23     ` JP Kobryn
2026-02-12 15:24   ` Vlastimil Babka
2026-02-12 21:25     ` JP Kobryn
2026-02-13  8:54       ` Vlastimil Babka
2026-02-13 19:56         ` JP Kobryn (Meta)
2026-02-18  4:25   ` kernel test robot [this message]
2026-02-12  4:51 ` [PATCH 2/2] mm: move pgscan and pgsteal to node stats JP Kobryn
2026-02-12  7:08   ` Michael S. Tsirkin
2026-02-12 21:23     ` JP Kobryn
2026-02-12  7:29   ` Michal Hocko
2026-02-12 21:20     ` JP Kobryn
2026-02-12  4:57 ` [PATCH 0/2] improve per-node allocation and reclaim visibility Matthew Wilcox
2026-02-12 21:22   ` JP Kobryn
2026-02-12 21:53     ` Matthew Wilcox
2026-02-12 18:08 ` [syzbot ci] " syzbot ci

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