INFO: task syz-executor.3:9649 blocked for more than 143 seconds. Not tainted 6.2.0-rc6-syzkaller-17549-gca72d58361ee #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:0 pid:9649 ppid:4467 flags:0x00000008 Call trace: __switch_to+0x180/0x298 arch/arm64/kernel/process.c:556 context_switch kernel/sched/core.c:5293 [inline] __schedule+0x42c/0x574 kernel/sched/core.c:6606 schedule+0x64/0xa4 kernel/sched/core.c:6682 schedule_preempt_disabled+0x18/0x2c kernel/sched/core.c:6741 __mutex_lock_common+0x788/0xca8 kernel/locking/mutex.c:679 __mutex_lock kernel/locking/mutex.c:747 [inline] mutex_lock_nested+0x38/0x44 kernel/locking/mutex.c:799 io_uring_del_tctx_node+0x6c/0x114 io_uring/tctx.c:169 io_uring_clean_tctx+0x60/0xe8 io_uring/tctx.c:185 io_uring_cancel_generic+0x2f0/0x390 io_uring/io_uring.c:3143 __io_uring_cancel+0x24/0x34 io_uring/io_uring.c:3157 io_uring_files_cancel include/linux/io_uring.h:55 [inline] do_exit+0xf4/0xc2c kernel/exit.c:822 do_group_exit+0x98/0xcc kernel/exit.c:1012 get_signal+0xac4/0xb34 kernel/signal.c:2859 do_signal+0x128/0x438 arch/arm64/kernel/signal.c:1246 do_notify_resume+0xc0/0x1f0 arch/arm64/kernel/signal.c:1299 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline] el0_svc+0x9c/0x150 arch/arm64/kernel/entry-common.c:638 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffff80000d6856c8 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/12: #0: ffff80000d685d18 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x3c/0x450 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffff80000d6855a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x4/0x48 include/linux/rcupdate.h:324 2 locks held by getty/4097: #0: ffff0000c9740098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x28/0x58 drivers/tty/tty_ldisc.c:244 #1: ffff80000f8962f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x19c/0x89c drivers/tty/n_tty.c:2177 2 locks held by kworker/u4:16/4843: 1 lock held by syz-executor.3/9649: #0: ffff000126fc90a8 (&ctx->uring_lock){+.+.}-{3:3}, at: io_uring_del_tctx_node+0x6c/0x114 io_uring/tctx.c:169 2 locks held by syz-executor.3/9654: 2 locks held by syz-executor.3/9765: 1 lock held by syz-executor.1/9781: =============================================