INFO: task syz-executor.1:6268 blocked for more than 430 seconds. Not tainted 5.12.0-rc2-syzkaller-00296-ga74e6a014c9d #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack: 0 pid: 6268 ppid: 4166 flags:0x00400009 Call trace: __switch_to+0x1f8/0x32c arch/arm64/kernel/process.c:564 context_switch kernel/sched/core.c:4324 [inline] __schedule+0x810/0x1ac0 kernel/sched/core.c:5075 schedule+0xac/0x230 kernel/sched/core.c:5154 schedule_timeout+0x184/0x1f0 kernel/time/timer.c:1868 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x18c/0x2e4 kernel/sched/completion.c:106 wait_for_common kernel/sched/completion.c:117 [inline] wait_for_completion+0x20/0x2c kernel/sched/completion.c:138 io_sq_thread_finish+0x7c/0x4d0 fs/io_uring.c:7127 io_sq_offload_create fs/io_uring.c:7928 [inline] io_uring_create fs/io_uring.c:9401 [inline] io_uring_setup+0x1ac0/0x218c fs/io_uring.c:9484 __do_sys_io_uring_setup fs/io_uring.c:9490 [inline] __se_sys_io_uring_setup fs/io_uring.c:9487 [inline] __arm64_sys_io_uring_setup+0x50/0x70 fs/io_uring.c:9487 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall arch/arm64/kernel/syscall.c:49 [inline] el0_svc_common.constprop.0+0xf0/0x2c0 arch/arm64/kernel/syscall.c:129 do_el0_svc_compat+0x40/0x70 arch/arm64/kernel/syscall.c:174 el0_svc_compat+0x24/0x3c arch/arm64/kernel/entry-common.c:494 el0_sync_compat_handler+0x90/0x140 arch/arm64/kernel/entry-common.c:503 el0_sync_compat+0x174/0x180 arch/arm64/kernel/entry.S:708 Showing all locks held in the system: 3 locks held by kworker/u4:4/190: 1 lock held by khungtaskd/1294: #0: ffff800017f6e020 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x74/0x25c kernel/locking/lockdep.c:6329 1 lock held by klogd/3725: 2 locks held by getty/3923: #0: ffff000013b25098 (&tty->ldisc_sem){++++}-{0:0}, at: ldsem_down_read+0x40/0x50 drivers/tty/tty_ldsem.c:340 #1: ffff80001ac0d2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x85c/0xc5c drivers/tty/n_tty.c:2178 =============================================