INFO: task syz-executor.1:13989 blocked for more than 143 seconds.
      Not tainted 6.0.0-rc2-syzkaller-00016-g072e51356cd5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:28112 pid:13989 ppid:  3635 flags:0x00104006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5182 [inline]
 __schedule+0xadf/0x52b0 kernel/sched/core.c:6494
 schedule+0xda/0x1b0 kernel/sched/core.c:6570
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6629
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa44/0x1350 kernel/locking/mutex.c:747
 io_uring_del_tctx_node+0x110/0x2b6 io_uring/tctx.c:175
 io_uring_clean_tctx+0xce/0x174 io_uring/tctx.c:191
 io_uring_cancel_generic+0x5aa/0x602 io_uring/io_uring.c:2851
 io_uring_files_cancel include/linux/io_uring.h:44 [inline]
 do_exit+0x4f9/0x29b0 kernel/exit.c:750
 do_group_exit+0xd2/0x2f0 kernel/exit.c:925
 get_signal+0x238c/0x2610 kernel/signal.c:2857
 arch_do_signal_or_restart+0x82/0x2300 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop kernel/entry/common.c:166 [inline]
 exit_to_user_mode_prepare+0x15f/0x250 kernel/entry/common.c:201
 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline]
 syscall_exit_to_user_mode+0x19/0x50 kernel/entry/common.c:294
 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe22a489279
RSP: 002b:00007fe22b5f9168 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: 0000000000004000 RBX: 00007fe22a59bf80 RCX: 00007fe22a489279
RDX: 0000000000006e44 RSI: 0000000000007c8a RDI: 0000000000000003
RBP: 00007fe22a4e3189 R08: 0000000000000000 R09: 0000000000000030
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff3b21abdf R14: 00007fe22b5f9300 R15: 0000000000022000
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8bf88770 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8bf88470 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8bf892c0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6492
2 locks held by getty/3293:
 #0: ffff88814aa06098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002d232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef0/0x13e0 drivers/tty/n_tty.c:2177
1 lock held by syz-executor.1/13989:
 #0: ffff8880782570a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x110/0x2b6 io_uring/tctx.c:175
1 lock held by syz-executor.1/14002:

=============================================

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.0.0-rc2-syzkaller-00016-g072e51356cd5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
 nmi_cpu_backtrace.cold+0x46/0x14f lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x206/0x250 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xc18/0xf50 kernel/hung_task.c:369
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3600 Comm: syz-fuzzer Not tainted 6.0.0-rc2-syzkaller-00016-g072e51356cd5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
RIP: 0033:0x41e15e
Code: 44 89 c1 45 89 d5 41 d3 ea 41 0f ba e2 04 0f 83 ec 00 00 00 48 89 44 24 58 41 0f a3 cd 0f 83 87 00 00 00 4e 8d 14 20 4d 8b 12 <66> 90 4d 85 d2 74 79 4d 89 d5 4d 29 e2 4c 39 d2 77 6e 89 4c 24 3c
RSP: 002b:000000c00003de80 EFLAGS: 00000217
RAX: 0000000000000028 RBX: 000000c00001f698 RCX: 0000000000000001
RDX: 0000000000000030 RSI: 0000000000203005 RDI: 00000000000000d5
RBP: 000000c00003df08 R08: 0000000000000001 R09: 00007f2f4a7036be
R10: 0000000000000000 R11: 00007f2f4a776fff R12: 000000c01718d7a0
R13: 00000000000000fa R14: 000000c00030c1a0 R15: 0000000000ac9de0
FS:  000000c000030c90 GS:  0000000000000000