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1
WARNING: mm/page_alloc.c:5340 at alloc_order_allowed mm/page_alloc.c:5340 [inline], CPU#0: syz.0.18/5538
WARNING: mm/page_alloc.c:5340 at __alloc_frozen_pages_noprof+0x425/0x5a0 mm/page_alloc.c:5397, CPU#0: syz.0.18/5538
Modules linked in:
CPU: 0 UID: 0 PID: 5538 Comm: syz.0.18 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:alloc_order_allowed mm/page_alloc.c:5340 [inline]
RIP: 0010:__alloc_frozen_pages_noprof+0x425/0x5a0 mm/page_alloc.c:5397
Code: 90 e9 76 fe ff ff 41 81 e6 3f ff ff ff 44 89 f1 41 83 e6 f7 a9 00 00 00 10 44 0f 44 f1 e9 45 fd ff ff c6 05 86 ab 37 0f 01 90 <0f> 0b 90 e9 8b fe ff ff 48 8d 3d 8c 1f 53 0f 67 48 0f b9 3a e9 68
RSP: 0018:ffffc900026cf560 EFLAGS: 00010246
RAX: ffffc900026cf500 RBX: 1ffff920004d9eb0 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000034 RDI: ffffc900026cf5c8
RBP: ffffc900026cf658 R08: ffffc900026cf5c7 R09: 0000000000000000
R10: ffffc900026cf5a0 R11: fffff520004d9eb9 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000040dc0 R15: 0000000000000000
FS:  00007f4cb1dc46c0(0000) GS:ffff88808b0b4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31032c5e9c CR3: 0000000013e1d000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 alloc_pages_mpol+0x21e/0x390 mm/mempolicy.c:2486
 ___kmalloc_large_node+0x4f/0x120 mm/slub.c:5353
 __kmalloc_large_node_noprof+0x18/0x90 mm/slub.c:5385
 __do_kmalloc_node mm/slub.c:5402 [inline]
 __kmalloc_noprof+0x3fb/0x720 mm/slub.c:5439
 _kmalloc_noprof include/linux/slab.h:995 [inline]
 _kzalloc_noprof include/linux/slab.h:1312 [inline]
 setup_conf+0x23a/0x1040 drivers/md/raid1.c:3074
 raid1_run+0x14d/0xa50 drivers/md/raid1.c:3208
 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: 0033:0x7f4cb0f9e1d9
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:00007f4cb1dc4028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4cb1226090 RCX: 00007f4cb0f9e1d9
RDX: 0000000000000000 RSI: 00000000400c0930 RDI: 0000000000000005
RBP: 00007f4cb1035888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4cb1226128 R14: 00007f4cb1226090 R15: 00007ffd96c81ad8
 </TASK>