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1
WARNING: mm/slub.c:5459 at ___kmalloc_large_node+0x10c/0x170 mm/slub.c:5459, CPU#0: syz.0.0/5344
Modules linked in:
CPU: 0 UID: 0 PID: 5344 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:___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 7c cb 0b 00 c6 05 68 5b 71 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:ffffc9000e4dfa78 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000001cd03e3e8 RCX: 0000000000100000
RDX: 00000000ffffffff RSI: 0000000000000cc0 RDI: 00000001cd03e3e8
RBP: 0000000000000cc0 R08: ffffffff85a4fcd9 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffffff85ae2f70 R12: ffffffff8cb73be8
R13: ffffffff85ae149a R14: 00000001cd03e3e8 R15: 00000001cd03e3e8
FS:  00007f43441446c0(0000) GS:ffff88808a9fe000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4343189140 CR3: 000000003364b000 CR4: 0000000000352ef0
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]
 _kmalloc_array_noprof include/linux/slab.h:1211 [inline]
 drm_syncobj_array_find+0x3a/0x440 drivers/gpu/drm/drm_syncobj.c:1241
 drm_syncobj_timeline_signal_ioctl+0x167/0x8a0 drivers/gpu/drm/drm_syncobj.c:1568
 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: 0033:0x7f434319fb19
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:00007f4344143fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f4343425fa0 RCX: 00007f434319fb19
RDX: 0000200000000140 RSI: 00000000c01864cd RDI: 000000000000000a
RBP: 00007f4343237b70 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4343426038 R14: 00007f4343425fa0 R15: 00007ffccb5ea608
 </TASK>