------------[ cut here ]------------
WARNING: mm/page_alloc.c:5186 at __alloc_frozen_pages_noprof+0x309/0x2430 mm/page_alloc.c:5186, CPU#3: syz.4.4625/2958
Modules linked in:
CPU: 3 UID: 0 PID: 2958 Comm: syz.4.4625 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~bpo12+1 04/01/2014
RIP: 0010:__alloc_frozen_pages_noprof+0x309/0x2430 mm/page_alloc.c:5186
Code: f0 5b 5d 41 5c 41 5d 41 5e 41 5f c3 cc cc cc cc 83 fe 0a 0f 86 0c fe ff ff 80 3d e9 4b 56 0e 00 75 0b c6 05 e0 4b 56 0e 01 90 <0f> 0b 90 45 31 f6 eb 81 4d 85 f6 74 22 44 89 fa 89 ee 4c 89 f7 e8
RSP: 0018:ffffc900073cf7a8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000014 RDI: 0000000000040cc0
RBP: 0000000000000014 R08: 0000000000000005 R09: 0000000000000009
R10: 0000000000000014 R11: ffff8880299354b0 R12: 0000000000040cc0
R13: 1ffff92000e79f0b R14: ffffffff9ac42ac4 R15: 0000000000000014
FS:  00007f56fcdf66c0(0000) GS:ffff8880d6bf5000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000d28000 CR3: 0000000047c28000 CR4: 0000000000352ef0
DR0: 0000000000000008 DR1: 0000000000000007 DR2: 0000000000000004
DR3: 0000000000000008 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2486
 ___kmalloc_large_node+0x10c/0x150 mm/slub.c:5598
 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:5629
 __do_kmalloc_node mm/slub.c:5645 [inline]
 __kmalloc_noprof.cold+0xc/0x62 mm/slub.c:5669
 kmalloc_noprof include/linux/slab.h:961 [inline]
 kmalloc_array_noprof include/linux/slab.h:1003 [inline]
 drm_syncobj_array_find+0x35/0x3c0 drivers/gpu/drm/drm_syncobj.c:1297
 drm_syncobj_timeline_signal_ioctl+0x226/0x870 drivers/gpu/drm/drm_syncobj.c:1624
 drm_ioctl_kernel+0x1f4/0x3e0 drivers/gpu/drm/drm_ioctl.c:804
 drm_ioctl+0x5c9/0xc30 drivers/gpu/drm/drm_ioctl.c:901
 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+0xcd/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f56feb8f7c9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f56fcdf6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f56fede5fa0 RCX: 00007f56feb8f7c9
RDX: 0000200000000340 RSI: 00000000c01864cd RDI: 0000000000000004
RBP: 00007f56fec13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f56fede6038 R14: 00007f56fede5fa0 R15: 00007fff78628c68
 </TASK>