------------[ cut here ]------------
!(flags & __GFP_NOWARN)
WARNING: mm/slub.c:6841 at __kvmalloc_node_noprof+0x7a6/0x890 mm/slub.c:6841, CPU#1: syz.5.191/6541
Modules linked in:
CPU: 1 UID: 0 PID: 6541 Comm: syz.5.191 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__kvmalloc_node_noprof+0x7a6/0x890 mm/slub.c:6841
Code: ff 48 c7 c7 d0 b1 a8 8e 48 89 de e8 04 35 cc 02 e9 59 fc ff ff 48 c7 c7 10 b2 a8 8e 48 89 de e8 f0 34 cc 02 e9 8e fc ff ff 90 <0f> 0b 90 45 31 e4 e9 08 fe ff ff 90 0f 0b 90 e9 55 ff ff ff 49 83
RSP: 0018:ffffc9000758fa48 EFLAGS: 00010246
RAX: 0000000000000001 RBX: ffffc9000758fbe0 RCX: 0000000080000001
RDX: 0000000080000008 RSI: ffffffff8c2a8d60 RDI: ffffffff8c2a8d20
RBP: 0000000080000008 R08: 00000000004028c0 R09: 00000000ffffffff
R10: 0000000000000006 R11: 0000000000000002 R12: 0000000000000000
R13: 00000000004028c0 R14: 0000000010000001 R15: 00000000ffffffff
FS:  00007f85d005f6c0(0000) GS:ffff888125351000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000002300 CR3: 00000000336e2000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 io_pin_pages+0x9f/0x1b0 io_uring/memmap.c:59
 io_sqe_buffer_register+0x21f/0x1360 io_uring/rsrc.c:884
 io_sqe_buffers_register+0x2eb/0x7e0 io_uring/rsrc.c:995
 __io_uring_register io_uring/register.c:767 [inline]
 __do_sys_io_uring_register io_uring/register.c:1029 [inline]
 __se_sys_io_uring_register+0x121b/0x1ab0 io_uring/register.c:1006
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f85cf19ce59
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:00007f85d005f028 EFLAGS: 00000246 ORIG_RAX: 00000000000001ab
RAX: ffffffffffffffda RBX: 00007f85cf415fa0 RCX: 00007f85cf19ce59
RDX: 0000200000002300 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f85cf232e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000003100 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f85cf416038 R14: 00007f85cf415fa0 R15: 00007fff1c075ba8
 </TASK>