BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD 62bc4067 P4D 62bc4067 PUD 60283067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8696 Comm: io_wqe_worker-0 Not tainted 5.8.0-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffffc900057ef8f0 EFLAGS: 00010246
RAX: 1ffffffff109f1b6 RBX: dffffc0000000000 RCX: ffff888062f86188
RDX: 000000007ab7fb6c RSI: 0000000000000000 RDI: ffff88802a5f3a40
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888060b324c8
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900057efa28
R13: ffffffff884f8da0 R14: 000000007ab7fb6c R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000060594000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_rw_iter.part.0+0xf3/0x450 fs/io_uring.c:2847
 loop_rw_iter fs/io_uring.c:2829 [inline]
 io_iter_do_read+0x10a/0x150 fs/io_uring.c:3052
 io_read+0x2d9/0xb60 fs/io_uring.c:3085
 io_issue_sqe+0x61a/0x60d0 fs/io_uring.c:5520
 io_wq_submit_work+0x183/0x3d0 fs/io_uring.c:5775
 io_worker_handle_work+0xa45/0x13f0 fs/io-wq.c:527
 io_wqe_worker+0xbf0/0x10e0 fs/io-wq.c:569
 kthread+0x3b5/0x4a0 kernel/kthread.c:292
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
CR2: 0000000000000000
---[ end trace 679c4b7e5eb2315e ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffffc900057ef8f0 EFLAGS: 00010246
RAX: 1ffffffff109f1b6 RBX: dffffc0000000000 RCX: ffff888062f86188
RDX: 000000007ab7fb6c RSI: 0000000000000000 RDI: ffff88802a5f3a40
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff888060b324c8
R10: 0000000000000000 R11: 0000000000000000 R12: ffffc900057efa28
R13: ffffffff884f8da0 R14: 000000007ab7fb6c R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802ce00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 0000000060594000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400