------------[ cut here ]------------
WARNING: CPU: 0 PID: 150 at drivers/block/null_blk/zoned.c:16 null_zone_no drivers/block/null_blk/zoned.c:16 [inline]
WARNING: CPU: 0 PID: 150 at drivers/block/null_blk/zoned.c:16 null_process_zoned_cmd+0xec0/0x1280 drivers/block/null_blk/zoned.c:690
Modules linked in:
CPU: 0 PID: 150 Comm: kworker/0:1H Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: kblockd blk_mq_run_work_fn
RIP: 0010:null_zone_no drivers/block/null_blk/zoned.c:16 [inline]
RIP: 0010:null_process_zoned_cmd+0xec0/0x1280 drivers/block/null_blk/zoned.c:690
Code: 4c 89 ff e8 d2 66 e2 04 89 e8 48 83 c4 58 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 9c 8e 91 fc 0f 0b e9 61 f6 ff ff e8 90 8e 91 fc <0f> 0b 31 c0 e9 6a f2 ff ff e8 82 8e 91 fc 48 c7 c7 e0 ec b4 8c 4c
RSP: 0018:ffffc9000183f708 EFLAGS: 00010293
RAX: ffffffff84e78110 RBX: 0000000000000000 RCX: ffff88801d4b1dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff88801d4b1dc0 R09: 0000000000000007
R10: 000000000000000a R11: 0000000000000000 R12: dffffc0000000000
R13: ffff88802151d800 R14: 0000000000000008 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4bafe2c840 CR3: 0000000063776000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 null_handle_cmd+0x362/0x990 drivers/block/null_blk/main.c:1374
 blk_mq_dispatch_rq_list+0xa06/0x1c50 block/blk-mq.c:1387
 __blk_mq_do_dispatch_sched block/blk-mq-sched.c:200 [inline]
 blk_mq_do_dispatch_sched+0xadf/0xc90 block/blk-mq-sched.c:214
 __blk_mq_sched_dispatch_requests+0x32c/0x410 block/blk-mq-sched.c:-1
 blk_mq_sched_dispatch_requests+0xf4/0x1b0 block/blk-mq-sched.c:366
 __blk_mq_run_hw_queue+0xbb/0x100 block/blk-mq.c:1512
 process_one_work+0x867/0xff0 kernel/workqueue.c:2310
 worker_thread+0xad7/0x12a0 kernel/workqueue.c:2457
 kthread+0x42e/0x520 kernel/kthread.c:334
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287
 </TASK>