------------[ cut here ]------------
WARNING: mm/slub.c:6841 at __kvmalloc_node_noprof+0x688/0x94c mm/slub.c:6841, CPU#1: syz.1.259/4290
Modules linked in:
CPU: 1 UID: 0 PID: 4290 Comm: syz.1.259 Not tainted syzkaller #0 PREEMPT 
Hardware name: linux,dummy-virt (DT)
pstate: 20000005 (nzCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __kvmalloc_node_noprof+0x688/0x94c mm/slub.c:6841
lr : __do_kmalloc_node mm/slub.c:5323 [inline]
lr : __kvmalloc_node_noprof+0x674/0x94c mm/slub.c:6833
sp : ffff8000a01f7890
x29: ffff8000a01f78e0 x28: ffff8000a01f7b88 x27: 0000000000000000
x26: 0000000000000021 x25: ffff000018526004 x24: 1fffe000030a4c24
x23: 00000000004028c0 x22: 00000000ffffffff x21: 0000000000400cc0
x20: 0000000000000000 x19: 0000000080000008 x18: 0000000000000000
x17: ffff80008158c8e8 x16: ffff80008158a5f4 x15: ffff800080a705dc
x14: ffff800080a6cdd8 x13: ffff80008001159c x12: 00000000f200f204
x11: 000000000000f2f2 x10: 00000000f2f2f2f2 x9 : 0000000000000014
x8 : 00000000f3f3f3f3 x7 : 0000000000000001 x6 : 0000000000001000
x5 : 00000000ffffffff x4 : 00000000004028c0 x3 : 1fffe0000d7fcd3c
x2 : 1fffe000025ddae1 x1 : 0000000100000000 x0 : 000000007fffffff
Call trace:
 __kvmalloc_node_noprof+0x688/0x94c mm/slub.c:6841 (P)
 io_pin_pages+0x5c/0x160 io_uring/memmap.c:59
 io_sqe_buffer_register+0x148/0x10b8 io_uring/rsrc.c:884
 io_sqe_buffers_register+0x2e8/0x3b0 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 io_uring/register.c:1006 [inline]
 __arm64_sys_io_uring_register+0xa60/0x1d74 io_uring/register.c:1006
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x74/0x240 arch/arm64/kernel/syscall.c:49
 el0_svc_common.constprop.0+0xac/0x230 arch/arm64/kernel/syscall.c:121
 do_el0_svc+0x40/0x58 arch/arm64/kernel/syscall.c:140
 el0_svc+0x58/0x2a4 arch/arm64/kernel/entry-common.c:736
 el0t_64_sync_handler+0xa0/0xe4 arch/arm64/kernel/entry-common.c:755
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:594
irq event stamp: 0
hardirqs last  enabled at (0): [<0000000000000000>] 0x0
hardirqs last disabled at (0): [<ffff800080215c68>] copy_process+0x16a8/0x5700 kernel/fork.c:2232
softirqs last  enabled at (0): [<ffff800080215c88>] copy_process+0x16c8/0x5700 kernel/fork.c:2233
softirqs last disabled at (0): [<0000000000000000>] 0x0
---[ end trace 0000000000000000 ]---