From: syzbot ci <syzbot+ciaf452181ab05b97e@syzkaller.appspotmail.com>
To: akpm@linux-foundation.org, apopple@nvidia.com,
axelrasmussen@google.com, byungchul@sk.com,
cgroups@vger.kernel.org, david@kernel.org, eperezma@redhat.com,
gourry@gourry.net, hannes@cmpxchg.org, inwardvessel@gmail.com,
jasowang@redhat.com, joshua.hahnjy@gmail.com,
kernel-team@meta.com, liam.howlett@oracle.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
lorenzo.stoakes@oracle.com, matthew.brost@intel.com,
mhocko@suse.com, mst@redhat.com, muchun.song@linux.dev,
rakie.kim@sk.com, roman.gushchin@linux.dev, rppt@kernel.org,
shakeel.butt@linux.dev, surenb@google.com, vbabka@suse.cz,
virtualization@lists.linux.dev, weixugc@google.com,
xuanzhuo@linux.alibaba.com, ying.huang@linux.alibaba.com,
yuanchu@google.com, zhengqi.arch@bytedance.com, ziy@nvidia.com
Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com
Subject: [syzbot ci] Re: improve per-node allocation and reclaim visibility
Date: Thu, 12 Feb 2026 10:08:32 -0800 [thread overview]
Message-ID: <698e1720.a70a0220.2c38d7.009c.GAE@google.com> (raw)
In-Reply-To: <20260212045109.255391-1-inwardvessel@gmail.com>
syzbot ci has tested the following series
[v1] improve per-node allocation and reclaim visibility
https://lore.kernel.org/all/20260212045109.255391-1-inwardvessel@gmail.com
* [PATCH 1/2] mm/mempolicy: track page allocations per mempolicy
* [PATCH 2/2] mm: move pgscan and pgsteal to node stats
and found the following issue:
WARNING in __mod_node_page_state
Full report is available here:
https://ci.syzbot.org/series/4ec12ede-3298-43a3-ab6b-79d47759672e
***
WARNING in __mod_node_page_state
tree: mm-new
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/akpm/mm.git
base: 72a46cdd4ef13690beb8c5a2f6a2023fd7ef2eb4
arch: amd64
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8
config: https://ci.syzbot.org/builds/0f678e4c-a4ba-4f17-8ed7-8ae99e56a463/config
------------[ cut here ]------------
IS_ENABLED(CONFIG_PREEMPT_COUNT) && __lockdep_enabled && (preempt_count() == 0 && this_cpu_read(hardirqs_enabled))
WARNING: mm/vmstat.c:396 at __mod_node_page_state+0x126/0x170, CPU#0: kthreadd/2
Modules linked in:
CPU: 0 UID: 0 PID: 2 Comm: kthreadd Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__mod_node_page_state+0x126/0x170
Code: 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 89 df 4c 89 e6 44 89 fa e8 68 00 00 00 31 db eb cc 90 0f 0b 90 e9 3e ff ff ff 90 <0f> 0b 90 eb 80 48 c7 c7 e0 c6 64 8e 4c 89 f6 e8 66 3c d3 02 e9 28
RSP: 0000:ffffc900000773d0 EFLAGS: 00010202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 000000000000003d RDI: ffff88815fffb380
RBP: dffffc0000000000 R08: ffffffff8fef2977 R09: 1ffffffff1fde52e
R10: dffffc0000000000 R11: fffffbfff1fde52f R12: ffff88815fffb380
R13: ffffffff92f50f00 R14: 000000000000003d R15: 000000000000003d
FS: 0000000000000000(0000) GS:ffff88818e0f0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffff88823ffff000 CR3: 000000000e346000 CR4: 00000000000006f0
Call Trace:
<TASK>
alloc_pages_mpol+0x407/0x740
alloc_pages_noprof+0xa8/0x190
get_free_pages_noprof+0xf/0x80
__kasan_populate_vmalloc+0x38/0x1d0
alloc_vmap_area+0xd21/0x1460
__get_vm_area_node+0x1f8/0x300
__vmalloc_node_range_noprof+0x372/0x1730
__vmalloc_node_noprof+0xc2/0x100
dup_task_struct+0x228/0x9a0
copy_process+0x508/0x3980
kernel_clone+0x248/0x870
kernel_thread+0x13f/0x1b0
kthreadd+0x4f9/0x6f0
ret_from_fork+0x51b/0xa40
ret_from_fork_asm+0x1a/0x30
</TASK>
***
If these findings have caused you to resend the series or submit a
separate fix, please add the following tag to your commit message:
Tested-by: syzbot@syzkaller.appspotmail.com
---
This report is generated by a bot. It may contain errors.
syzbot ci engineers can be reached at syzkaller@googlegroups.com.
prev parent reply other threads:[~2026-02-12 18:08 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
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 [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=698e1720.a70a0220.2c38d7.009c.GAE@google.com \
--to=syzbot+ciaf452181ab05b97e@syzkaller.appspotmail.com \
--cc=akpm@linux-foundation.org \
--cc=apopple@nvidia.com \
--cc=axelrasmussen@google.com \
--cc=byungchul@sk.com \
--cc=cgroups@vger.kernel.org \
--cc=david@kernel.org \
--cc=eperezma@redhat.com \
--cc=gourry@gourry.net \
--cc=hannes@cmpxchg.org \
--cc=inwardvessel@gmail.com \
--cc=jasowang@redhat.com \
--cc=joshua.hahnjy@gmail.com \
--cc=kernel-team@meta.com \
--cc=liam.howlett@oracle.com \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=matthew.brost@intel.com \
--cc=mhocko@suse.com \
--cc=mst@redhat.com \
--cc=muchun.song@linux.dev \
--cc=rakie.kim@sk.com \
--cc=roman.gushchin@linux.dev \
--cc=rppt@kernel.org \
--cc=shakeel.butt@linux.dev \
--cc=surenb@google.com \
--cc=syzbot@lists.linux.dev \
--cc=syzkaller-bugs@googlegroups.com \
--cc=vbabka@suse.cz \
--cc=virtualization@lists.linux.dev \
--cc=weixugc@google.com \
--cc=xuanzhuo@linux.alibaba.com \
--cc=ying.huang@linux.alibaba.com \
--cc=yuanchu@google.com \
--cc=zhengqi.arch@bytedance.com \
--cc=ziy@nvidia.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.