From: kernel test robot <oliver.sang@intel.com>
To: Gregory Price <gourry@gourry.net>
Cc: <oe-lkp@lists.linux.dev>, <lkp@intel.com>,
Gregory Price <gourry@gourry.net>, <oliver.sang@intel.com>
Subject: [gourryinverse:scratch/gourry/managed_nodes/rfc5] [mm] 5719619cfd: Oops:divide_error:#[##]
Date: Fri, 26 Jun 2026 16:06:28 +0800 [thread overview]
Message-ID: <202606261549.2de78c5b-lkp@intel.com> (raw)
Hello,
kernel test robot noticed "Oops:divide_error:#[##]" on:
commit: 5719619cfde5ab0de3c5e23d5148d16f8e099b95 ("mm: add NODE_PRIVATE_CAP_RECLAIM for opted-in private node reclaim")
https://github.com/gourryinverse/linux scratch/gourry/managed_nodes/rfc5
in testcase: boot
config: i386-randconfig-015-20260625
compiler: clang-22
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G
(please refer to attached dmesg/kmsg for entire log/backtrace)
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/202606261549.2de78c5b-lkp@intel.com
[ 0.382314][ T1] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
[ 0.385543][ T1] futex hash table entries: 256 (15360 bytes on 1 NUMA nodes, total 15 KiB, linear).
[ 0.388779][ T1] xor: automatically using best checksumming function avx
[ 0.392592][ T1] regulator-dummy: 2147483647 mW budget, enabled
[ 0.395918][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family
[ 0.404973][ T1] Oops: divide error: 0000 [#1]
[ 0.406138][ T1] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Tainted: G T 7.1.0-rc5-00530-g5719619cfde5 #1 PREEMPT(full) 450d841d236e32aa9c517c2f2614cf10e667100e
[ 0.406138][ T1] Tainted: [T]=RANDSTRUCT
[ 0.406138][ T1] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
[ 0.406138][ T1] EIP: setup_per_zone_wmarks (kbuild/src/mm/page_alloc.c:6586 (discriminator 256) kbuild/src/mm/page_alloc.c:6649 (discriminator 256))
[ 0.406138][ T1] Code: 01 00 00 89 c6 c1 7d f0 02 90 90 90 90 8d be e8 01 00 00 89 f8 e8 a3 04 c9 01 89 c3 8d 4e 44 f6 c1 03 75 67 8b 01 0f af 45 f0 <f7> 35 94 23 44 cc 8b 56 44 81 fa 00 84 00 00 89 d0 73 05 b8 ff 83
All code
========
0: 01 00 add %eax,(%rax)
2: 00 89 c6 c1 7d f0 add %cl,-0xf823e3a(%rcx)
8: 02 90 90 90 90 8d add -0x726f6f70(%rax),%dl
e: be e8 01 00 00 mov $0x1e8,%esi
13: 89 f8 mov %edi,%eax
15: e8 a3 04 c9 01 call 0x1c904bd
1a: 89 c3 mov %eax,%ebx
1c: 8d 4e 44 lea 0x44(%rsi),%ecx
1f: f6 c1 03 test $0x3,%cl
22: 75 67 jne 0x8b
24: 8b 01 mov (%rcx),%eax
26: 0f af 45 f0 imul -0x10(%rbp),%eax
2a:* f7 35 94 23 44 cc divl -0x33bbdc6c(%rip) # 0xffffffffcc4423c4 <-- trapping instruction
30: 8b 56 44 mov 0x44(%rsi),%edx
33: 81 fa 00 84 00 00 cmp $0x8400,%edx
39: 89 d0 mov %edx,%eax
3b: 73 05 jae 0x42
3d: b8 .byte 0xb8
3e: ff .byte 0xff
3f: 83 .byte 0x83
Code starting with the faulting instruction
===========================================
0: f7 35 94 23 44 cc divl -0x33bbdc6c(%rip) # 0xffffffffcc44239a
6: 8b 56 44 mov 0x44(%rsi),%edx
9: 81 fa 00 84 00 00 cmp $0x8400,%edx
f: 89 d0 mov %edx,%eax
11: 73 05 jae 0x18
13: b8 .byte 0xb8
14: ff .byte 0xff
15: 83 .byte 0x83
[ 0.406138][ T1] EAX: 08b919c8 EBX: 00000207 ECX: ccfe6c24 EDX: cc791333
[ 0.406138][ T1] ESI: ccfe6be0 EDI: ccfe6dc8 EBP: c05b9c4c ESP: c05b9c38
[ 0.406138][ T1] DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 EFLAGS: 00010002
[ 0.406138][ T1] CR0: 80050033 CR2: ffdd9000 CR3: 0d2c9000 CR4: 00040690
[ 0.406138][ T1] Call Trace:
[ 0.406138][ T1] init_per_zone_wmark_min (kbuild/src/mm/page_alloc.c:6703)
[ 0.406138][ T1] do_one_initcall (kbuild/src/init/main.c:1392)
[ 0.406138][ T1] ? __dequeue_entity (kbuild/src/include/linux/rbtree_augmented.h:339 kbuild/src/kernel/sched/fair.c:1051)
[ 0.406138][ T1] ? kvm_sched_clock_read (kbuild/src/arch/x86/kernel/kvmclock.c:92 (discriminator 1))
[ 0.406138][ T1] ? sched_clock_noinstr (kbuild/src/arch/x86/kernel/tsc.c:274)
The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260626/202606261549.2de78c5b-lkp@intel.com
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-06-26 8:06 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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=202606261549.2de78c5b-lkp@intel.com \
--to=oliver.sang@intel.com \
--cc=gourry@gourry.net \
--cc=lkp@intel.com \
--cc=oe-lkp@lists.linux.dev \
/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.