md: array md2 already has disks!
md: array md2 already has disks!
md: could not open device unknown-block(1,4).
md: error, md_import_device() returned -16
------------[ cut here ]------------
1
WARNING: mm/page_alloc.c:5340 at alloc_order_allowed mm/page_alloc.c:5340 [inline], CPU#0: syz.2.107/6066
WARNING: mm/page_alloc.c:5340 at __alloc_frozen_pages_noprof+0x2114/0x32e0 mm/page_alloc.c:5397, CPU#0: syz.2.107/6066
Modules linked in:
CPU: 0 UID: 0 PID: 6066 Comm: syz.2.107 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:alloc_order_allowed mm/page_alloc.c:5340 [inline]
RIP: 0010:__alloc_frozen_pages_noprof+0x2114/0x32e0 mm/page_alloc.c:5397
Code: 13 00 00 39 84 24 98 00 00 00 0f 85 ac f9 ff ff e9 9d f5 ff ff 80 3d 19 14 ba 0f 00 0f 85 bc e2 ff ff c6 05 0c 14 ba 0f 01 90 <0f> 0b 90 e9 ac e2 ff ff 31 c0 e9 7c eb ff ff 48 8b 3c 24 48 c7 c6
RSP: 0018:ffffc9000568f4d0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 000000000000000d RDI: 0000000000040dc0
RBP: 000000000000000d R08: 0000000000000000 R09: 0000000000000009
R10: 000000000000000d R11: 0000000000000000 R12: 0000000000040dc0
R13: 1ffff92000ad1ef6 R14: 0000000000000000 R15: 1ffff92000ad1eb4
FS:  00007fb9c1ade6c0(0000) GS:ffff888122934000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f465bf6afe8 CR3: 000000007d231000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 alloc_pages_mpol+0x201/0x550 mm/mempolicy.c:2486
 ___kmalloc_large_node+0xe8/0x130 mm/slub.c:5353
 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5385
 __do_kmalloc_node mm/slub.c:5402 [inline]
 __kmalloc_noprof+0x5a3/0x840 mm/slub.c:5439
 _kmalloc_noprof include/linux/slab.h:995 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 setup_conf+0xc3f/0x2a20 drivers/md/raid5.c:7732
 raid5_run+0x1260/0x1670 drivers/md/raid5.c:8129
 md_run+0xc2f/0x2510 drivers/md/md.c:6779
 do_md_run+0x36/0x660 drivers/md/md.c:6880
 md_ioctl+0x27e6/0x36c0 drivers/md/md.c:8515
 blkdev_ioctl+0x5ad/0x6f0 block/ioctl.c:798
 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:61 [inline]
 do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb9c0b9f559
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:00007fb9c1ade028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fb9c0e25fa0 RCX: 00007fb9c0b9f559
RDX: 0000200000000380 RSI: 00000000400c0930 RDI: 0000000000000003
RBP: 00007fb9c0c36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fb9c0e26038 R14: 00007fb9c0e25fa0 R15: 00007ffd3f898b28
 </TASK>