------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:7013 at __kvmalloc_node_noprof+0x798/0x820, CPU#1: syz.0.569/8556
Modules linked in:
CPU: 1 UID: 0 PID: 8556 Comm: syz.0.569 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__kvmalloc_node_noprof+0x798/0x820
Code: ff 48 c7 c7 30 62 e9 8e 48 89 de e8 c2 0b ee 02 e9 1b fc ff ff 48 c7 c7 70 62 e9 8e 48 89 de e8 ae 0b ee 02 e9 4c fc ff ff 90 <0f> 0b 90 31 db e9 06 fe ff ff 90 0f 0b 90 e9 55 ff ff ff 49 83 7f
RSP: 0018:ffffc900048ffae0 EFLAGS: 00010246
RAX: 0000000000000100 RBX: 0000000000000000 RCX: 8000000000000001
RDX: 0000008000000060 RSI: ffffffff8c6d6d60 RDI: ffffffff8c6d6d20
RBP: 00000000ffffffff R08: 00000000000028c0 R09: 00000000ffffffff
R10: 0000000000000006 R11: 0000000000000002 R12: 0000008000000060
R13: 00000000000028c0 R14: 0000001000000000 R15: ffffffff8654e64c
FS:  00007f56549d26c0(0000) GS:ffff8882a8ce4000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f56549d1ff8 CR3: 000000016dc08000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 udmabuf_create+0x2dc/0xf50
 udmabuf_ioctl+0x29a/0x300
 __se_sys_ioctl+0xfc/0x170
 do_syscall_64+0x166/0x520
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5653b9e159
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:00007f56549d2028 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5653e25fa0 RCX: 00007f5653b9e159
RDX: 0000200000000c40 RSI: 0000000040087543 RDI: 0000000000000003
RBP: 00007f5653c3506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5653e26038 R14: 00007f5653e25fa0 R15: 00007ffe2f5da468
 </TASK>
