process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307
 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454
 kthread+0x405/0x4f0 kernel/kthread.c:345
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
------------[ cut here ]------------
kernel BUG at mm/page_alloc.c:1083!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8 Comm: kworker/u4:0 Not tainted 5.16.0-rc4-next-20211210-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events_unbound io_ring_exit_work
RIP: 0010:__free_one_page+0xa8a/0xf60 mm/page_alloc.c:1083
Code: 43 34 85 c0 0f 84 f4 f8 ff ff 48 c7 c6 c0 73 b7 89 48 89 ef e8 a7 c6 f5 ff 0f 0b 48 c7 c6 a0 72 b7 89 4c 89 ef e8 96 c6 f5 ff <0f> 0b 0f 0b 48 c7 c6 00 73 b7 89 4c 89 ef e8 83 c6 f5 ff 0f 0b 48
RSP: 0018:ffffc90000cd7948 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffc90000cd7a40 RCX: 0000000000000000
RDX: ffff888010e457c0 RSI: ffffffff81b7ad2a RDI: 0000000000000003
RBP: 0000000000040600 R08: 0000000000000018 R09: 00000000ffffffff
R10: ffffffff89127414 R11: 00000000ffffffff R12: 0000000000000009
R13: ffffea0001018000 R14: 0000000000000000 R15: ffff88813fffa700
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d631000 CR3: 000000001e2f1000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 free_pcppages_bulk+0x533/0x8a0 mm/page_alloc.c:1545
 free_unref_page_commit.constprop.0+0x4cf/0x6f0 mm/page_alloc.c:3390
 free_unref_page+0x236/0x690 mm/page_alloc.c:3423
 io_mem_free.part.0+0xcc/0xd5 fs/io_uring.c:8931
 io_mem_free fs/io_uring.c:8926 [inline]
 io_ring_ctx_free fs/io_uring.c:9470 [inline]
 io_ring_exit_work+0xa0c/0xbd0 fs/io_uring.c:9623
 process_one_work+0x9ac/0x1680 kernel/workqueue.c:2307
 worker_thread+0x652/0x11c0 kernel/workqueue.c:2454
 kthread+0x405/0x4f0 kernel/kthread.c:345
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
Modules linked in:
---[ end trace 78e0e0e959e0d618 ]---
RIP: 0010:__free_one_page+0xa8a/0xf60 mm/page_alloc.c:1083
Code: 43 34 85 c0 0f 84 f4 f8 ff ff 48 c7 c6 c0 73 b7 89 48 89 ef e8 a7 c6 f5 ff 0f 0b 48 c7 c6 a0 72 b7 89 4c 89 ef e8 96 c6 f5 ff <0f> 0b 0f 0b 48 c7 c6 00 73 b7 89 4c 89 ef e8 83 c6 f5 ff 0f 0b 48
RSP: 0018:ffffc90000cd7948 EFLAGS: 00010093
RAX: 0000000000000000 RBX: ffffc90000cd7a40 RCX: 0000000000000000
RDX: ffff888010e457c0 RSI: ffffffff81b7ad2a RDI: 0000000000000003
RBP: 0000000000040600 R08: 0000000000000018 R09: 00000000ffffffff
R10: ffffffff89127414 R11: 00000000ffffffff R12: 0000000000000009
R13: ffffea0001018000 R14: 0000000000000000 R15: ffff88813fffa700
FS:  0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d631000 CR3: 000000001e2f1000 CR4: 00000000003526f0