BUG: kernel NULL pointer dereference, address: 0000000000000000
#PF: supervisor instruction fetch in kernel mode
#PF: error_code(0x0010) - not-present page
PGD a6135067 P4D a6135067 PUD 8f09b067 PMD 0 
Oops: 0010 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6849 Comm: io_wqe_worker-0 Not tainted 5.8.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffffc90000ff7830 EFLAGS: 00010246
RAX: 1ffffffff110c498 RBX: ffffffff888624c0 RCX: ffff8880a8396e48
RDX: 00000000000000a3 RSI: 0000000020000240 RDI: ffff8880a2d8a780
RBP: ffffc90000ff7958 R08: ffffffff81d601f1 R09: ffffffff81d4df54
R10: 0000000000000021 R11: ffff8880924d2080 R12: 00000000000000a3
R13: 0000000020000240 R14: 0000000000000000 R15: 00000000000000a3
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000009eef8000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 loop_rw_iter+0x33a/0x470 fs/io_uring.c:2847
 io_write+0x71c/0xe90 fs/io_uring.c:3190
 io_issue_sqe+0x396f/0xb8c0 fs/io_uring.c:5530
 io_wq_submit_work+0x35e/0x590 fs/io_uring.c:5775
 io_worker_handle_work+0xf8f/0x1570 fs/io-wq.c:527
 io_wqe_worker+0x2ff/0x810 fs/io-wq.c:569
 kthread+0x37e/0x3a0 drivers/block/aoe/aoecmd.c:1234
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
Modules linked in:
CR2: 0000000000000000
---[ end trace bded72c5cb7756d8 ]---
RIP: 0010:0x0
Code: Bad RIP value.
RSP: 0018:ffffc90000ff7830 EFLAGS: 00010246
RAX: 1ffffffff110c498 RBX: ffffffff888624c0 RCX: ffff8880a8396e48
RDX: 00000000000000a3 RSI: 0000000020000240 RDI: ffff8880a2d8a780
RBP: ffffc90000ff7958 R08: ffffffff81d601f1 R09: ffffffff81d4df54
R10: 0000000000000021 R11: ffff8880924d2080 R12: 00000000000000a3
R13: 0000000020000240 R14: 0000000000000000 R15: 00000000000000a3
FS:  0000000000000000(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 000000009eef8000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400