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]
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