[syzbot] [mm?] WARNING in create_strip_zones

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Mar 8, 2026, 1:02:35 PM (14 hours ago) Mar 8
to ak...@linux-foundation.org, apo...@nvidia.com, byun...@sk.com, da...@kernel.org, gou...@gourry.net, joshua...@gmail.com, linux-...@vger.kernel.org, linu...@kvack.org, matthe...@intel.com, raki...@sk.com, syzkall...@googlegroups.com, ying....@linux.alibaba.com, z...@nvidia.com
Hello,

syzbot found the following issue on:

HEAD commit: ecc64d2dc9ff Merge tag 'sysctl-7.00-fixes-rc3' of git://gi..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=11667006580000
kernel config: https://syzkaller.appspot.com/x/.config?x=976ba5a93c4add9e
dashboard link: https://syzkaller.appspot.com/bug?extid=924649752adf0d3ac9dd
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-ecc64d2d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/69399e740888/vmlinux-ecc64d2d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bc08c6900a4a/bzImage-ecc64d2d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+924649...@syzkaller.appspotmail.com

------------[ cut here ]------------
1
WARNING: mm/page_alloc.c:5226 at __alloc_frozen_pages_noprof+0x23ea/0x2ba0 mm/page_alloc.c:5226, CPU#3: syz.7.23364/10844
Modules linked in:
CPU: 3 UID: 0 PID: 10844 Comm: syz.7.23364 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:__alloc_frozen_pages_noprof+0x23ea/0x2ba0 mm/page_alloc.c:5226
Code: 00 45 31 c9 49 83 bc 24 70 05 00 00 00 4c 89 4c 24 50 0f 85 5f f8 ff ff c6 44 24 10 00 e9 f3 ea ff ff c6 05 d4 93 5a 0e 01 90 <0f> 0b 90 e9 69 df ff ff 83 7c 24 40 03 41 bc 04 00 00 00 7f 06 41
RSP: 0018:ffffc900050b75f8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000011 RDI: 0000000000040dc0
RBP: 0000000000000011 R08: 0000000000000005 R09: 0000000000000009
R10: 0000000000000011 R11: 0000000000000000 R12: 0000000000040dc0
R13: 1ffff92000a16f0e R14: 0000000000000011 R15: 1ffff92000a16ed8
FS: 00007f782a8cc6c0(0000) GS:ffff8880d6645000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000040 CR3: 000000003e49e000 CR4: 0000000000352ef0
DR0: ffffffffffffffff DR1: 00000000000001f8 DR2: 0000000000000083
DR3: ffffffffefffff15 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2484
___kmalloc_large_node+0x104/0x150 mm/slub.c:5179
__kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5210
__do_kmalloc_node mm/slub.c:5226 [inline]
__kmalloc_noprof+0x5be/0x850 mm/slub.c:5250
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
create_strip_zones+0x56b/0x1f90 drivers/md/raid0.c:149
raid0_run+0x341/0x410 drivers/md/raid0.c:421
md_run+0xc2f/0x24b0 drivers/md/md.c:6601
do_md_run+0x36/0x660 drivers/md/md.c:6698
md_ioctl+0x27b2/0x37b0 drivers/md/md.c:8321
blkdev_ioctl+0x5ad/0x6f0 block/ioctl.c:804
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:597 [inline]
__se_sys_ioctl fs/ioctl.c:583 [inline]
__x64_sys_ioctl+0x18e/0x210 fs/ioctl.c:583
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f782999c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f782a8cc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7829c15fa0 RCX: 00007f782999c799
RDX: 0000200000000005 RSI: 00000000400c0930 RDI: 0000000000000004
RBP: 00007f7829a32bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7829c16038 R14: 00007f7829c15fa0 R15: 00007fff9111c658
</TASK>


---
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