------------[ cut here ]------------
WARNING: io_uring/sqpoll.c:88 at io_sq_thread_stop+0x94/0xcc io_uring/sqpoll.c:88, CPU#0: kworker/u8:0/12
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 12 Comm: kworker/u8:0 Not tainted syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Workqueue: iou_exit io_ring_exit_work
Call trace: 
[<80201a08>] (dump_backtrace) from [<80201afc>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:8341c57c r6:00000000 r5:82542a90 r4:00000001
[<80201ae4>] (show_stack) from [<8021f73c>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201ae4>] (show_stack) from [<8021f73c>] (dump_stack_lvl+0x5c/0x70 lib/dump_stack.c:120)
[<8021f6e0>] (dump_stack_lvl) from [<8021f768>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r7:8341c57c r6:00000000 r5:83d93e80 r4:83688d7c
[<8021f750>] (dump_stack) from [<80202610>] (vpanic+0x114/0x324 kernel/panic.c:661)
[<802024fc>] (vpanic) from [<80202854>] (trace_suspend_resume+0x0/0x100 kernel/panic.c:787)
 r7:80971a24
[<80202820>] (panic) from [<80252ce4>] (check_panic_on_warn kernel/panic.c:533 [inline])
[<80202820>] (panic) from [<80252ce4>] (proc_taint+0x0/0x18c kernel/panic.c:528)
 r3:8340b188 r2:00000001 r1:825282a4 r0:8252fc74
[<80252c6c>] (check_panic_on_warn) from [<802530a8>] (__warn+0x98/0x1a4 kernel/panic.c:1104)
[<80253010>] (__warn) from [<8025332c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:1136)
 r8:00000009 r7:825a73f4 r6:df849df4 r5:83d93e80 r4:00000000
[<802531b8>] (warn_slowpath_fmt) from [<80971a24>] (io_sq_thread_stop+0x94/0xcc io_uring/sqpoll.c:88)
 r10:83613fb0 r9:873bc6f4 r8:83403d80 r7:873bc640 r6:873bc67c r5:859149d0
 r4:85914980
[<80971990>] (io_sq_thread_stop) from [<80971abc>] (io_put_sq_data io_uring/sqpoll.c:105 [inline])
[<80971990>] (io_sq_thread_stop) from [<80971abc>] (io_put_sq_data+0x60/0x9c io_uring/sqpoll.c:100)
 r5:85914980 r4:85914980
[<80971a5c>] (io_put_sq_data) from [<80971b8c>] (io_sq_thread_finish+0x94/0xa0 io_uring/sqpoll.c:130)
 r5:85914980 r4:873bc400
[<80971af8>] (io_sq_thread_finish) from [<80209108>] (io_ring_ctx_free io_uring/io_uring.c:2322 [inline])
[<80971af8>] (io_sq_thread_finish) from [<80209108>] (io_ring_exit_work+0x268/0x55c io_uring/io_uring.c:2658)
 r7:873bc640 r6:873bc440 r5:873bc400 r4:873bc704
[<80208ea0>] (io_ring_exit_work) from [<80279ba4>] (process_one_work+0x1f8/0x5cc kernel/workqueue.c:3495)
 r10:83ff7005 r9:02000000 r8:83d93e80 r7:83c12a00 r6:83ff7000 r5:873bc704
 r4:83c15980
[<802799ac>] (process_one_work) from [<8027ab50>] (process_scheduled_works kernel/workqueue.c:3578 [inline])
[<802799ac>] (process_one_work) from [<8027ab50>] (worker_thread+0x16c/0x318 kernel/workqueue.c:3659)
 r10:83c12a00 r9:83c159b0 r8:83d93e80 r7:83403d80 r6:83c12a20 r5:83c12a00
 r4:83c15980
[<8027a9e4>] (worker_thread) from [<80285798>] (kthread+0x11c/0x154 kernel/kthread.c:436)
 r10:00000000 r9:df819e50 r8:83c15800 r7:83c15980 r6:8027a9e4 r5:83d93e80
 r4:83c2cf00
[<8028567c>] (kthread) from [<80200114>] (ret_from_fork+0x14/0x20 arch/arm/kernel/entry-common.S:137)
Exception stack(0xdf849fb0 to 0xdf849ff8)
9fa0:                                     00000000 00000000 00000000 00000000
9fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
9fe0: 00000000 00000000 00000000 00000000 00000013 00000000
 r9:00000000 r8:00000000 r7:00000000 r6:00000000 r5:8028567c r4:83c2cf00
Rebooting in 86400 seconds..