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,
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jasowang@redhat.com, joshua.hahnjy@gmail.com,
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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] " 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]
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