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1
WARNING: mm/page_alloc.c:5340 at alloc_order_allowed mm/page_alloc.c:5340 [inline], CPU#0: syz.0.0/5326
WARNING: mm/page_alloc.c:5340 at __alloc_frozen_pages_noprof+0x425/0x5a0 mm/page_alloc.c:5397, CPU#0: syz.0.0/5326
Modules linked in:
CPU: 0 UID: 0 PID: 5326 Comm: syz.0.0 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 02 86 38 0e 01 90 <0f> 0b 90 e9 8b fe ff ff 48 8d 3d 3c f5 53 0e 67 48 0f b9 3a e9 68
RSP: 0018:ffffc9000ed5f920 EFLAGS: 00010246
RAX: ffffc9000ed5f900 RBX: 1ffff92001dabf28 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000015 RDI: ffffc9000ed5f988
RBP: ffffc9000ed5fa10 R08: ffffc9000ed5f987 R09: 0000000000000000
R10: ffffc9000ed5f960 R11: fffff52001dabf31 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000040cc0 R15: 0000000000000000
FS:  00007f50a0b526c0(0000) GS:ffff88808c2ca000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000001cc CR3: 000000001faa1000 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]
 _kmalloc_array_noprof include/linux/slab.h:1211 [inline]
 drm_syncobj_array_find+0x3a/0x440 drivers/gpu/drm/drm_syncobj.c:1274
 drm_syncobj_signal_ioctl+0x179/0x570 drivers/gpu/drm/drm_syncobj.c:1563
 drm_ioctl_kernel+0x2df/0x3b0 drivers/gpu/drm/drm_ioctl.c:817
 drm_ioctl+0x70e/0xba0 drivers/gpu/drm/drm_ioctl.c:914
 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: 0033:0x7f509fb9e159
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:00007f50a0b51fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f509fe25fa0 RCX: 00007f509fb9e159
RDX: 00002000000001c0 RSI: 00000000c01064c5 RDI: 0000000000000007
RBP: 00007f509fc3503b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f509fe26038 R14: 00007f509fe25fa0 R15: 00007ffe83852848
 </TASK>