md: array md4 already initialised!
------------[ cut here ]------------
1
WARNING: mm/slub.c:5459 at ___kmalloc_large_node+0x10c/0x170 mm/slub.c:5459, CPU#0: syz.4.1157/9033
Modules linked in:
CPU: 0 UID: 0 PID: 9033 Comm: syz.4.1157 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:___kmalloc_large_node+0x10c/0x170 mm/slub.c:5459
Code: 41 c7 46 30 00 00 00 f8 eb 03 45 31 ff 4c 89 ff 48 89 de 89 ea 5b 41 5c 41 5e 41 5f 5d e9 ec d3 0b 00 c6 05 b0 52 31 0f 01 90 <0f> 0b 90 31 c0 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 89 ef 89
RSP: 0018:ffffc900067176b8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000001800048 RCX: 0000000000000018
RDX: 00000000ffffffff RSI: 0000000000000dc0 RDI: 0000000001800048
RBP: 0000000000000dc0 R08: ffff88802d63e0c7 R09: 1ffff11005ac7c18
R10: dffffc0000000000 R11: ffffed1005ac7c19 R12: 0000000000100003
R13: ffffffff889bc5f5 R14: 0000000001800048 R15: ffff8880526e2224
FS:  00007f21aaa0a6c0(0000) GS:ffff888123a6f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000062a000 CR3: 000000005692c000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:5502
 __do_kmalloc_node mm/slub.c:5519 [inline]
 __kmalloc_noprof+0x3f6/0x710 mm/slub.c:5556
 _kmalloc_noprof include/linux/slab.h:995 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 setup_conf+0xc15/0x2ad0 drivers/md/raid5.c:7732
 raid5_run+0x8cc/0x2560 drivers/md/raid5.c:8129
 md_run+0xc3d/0x1cd0 drivers/md/md.c:6779
 do_md_run+0x35/0x720 drivers/md/md.c:6880
 md_ioctl+0x1e2b/0x2610 drivers/md/md.c:8515
 blkdev_ioctl+0x5e3/0x740 block/ioctl.c:798
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:597 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:583
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f21a9b9f559
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:00007f21aaa0a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f21a9e25fa0 RCX: 00007f21a9b9f559
RDX: 0000200000000700 RSI: 00000000400c0930 RDI: 0000000000000003
RBP: 00007f21a9c36b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f21a9e26038 R14: 00007f21a9e25fa0 R15: 00007ffdeec870f8
 </TASK>