rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10626 ticks this GP) idle=f16/1/0x4000000000000002 softirq=35269/35271 fqs=5248 (t=10502 jiffies g=56121 q=156) NMI backtrace for cpu 0 CPU: 0 PID: 16317 Comm: syz-executor.5 Not tainted 5.7.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x188/0x20d lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x70/0xb1 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x231/0x27e lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:164 [inline] rcu_dump_cpu_stacks+0x19b/0x1e5 kernel/rcu/tree_stall.h:254 print_cpu_stall kernel/rcu/tree_stall.h:475 [inline] check_cpu_stall kernel/rcu/tree_stall.h:549 [inline] rcu_pending kernel/rcu/tree.c:3225 [inline] rcu_sched_clock_irq.cold+0x55d/0xcfa kernel/rcu/tree.c:2296 update_process_times+0x25/0x60 kernel/time/timer.c:1727 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:176 tick_sched_timer+0x4e/0x140 kernel/time/tick-sched.c:1320 __run_hrtimer kernel/time/hrtimer.c:1520 [inline] __hrtimer_run_queues+0x5ca/0xed0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x312/0x770 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1113 [inline] smp_apic_timer_interrupt+0x15b/0x600 arch/x86/kernel/apic/apic.c:1138 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:lock_is_held_type+0x26e/0x350 kernel/locking/lockdep.c:4976 Code: c1 e8 03 80 3c 10 00 0f 85 c2 00 00 00 48 83 3d c7 0e 3c 08 00 74 32 48 8b 7c 24 10 57 9d 0f 1f 44 00 00 48 83 c4 18 44 89 e0 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 45 31 e4 e9 6e ff ff ff 41 bc 01 RSP: 0018:ffffc90001a77d80 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff88809727e500 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 1ffff11012e4fdb8 RDI: 0000000000000282 RBP: ffff88809727e500 R08: 0000000000000001 R09: ffffed10113f7a61 R10: ffff888089fbd307 R11: ffffed10113f7a60 R12: 0000000000000000 R13: ffff888089fbd160 R14: ffff88809727edc0 R15: ffffffff899be9c0 lock_is_held include/linux/lockdep.h:406 [inline] ___might_sleep+0x1fc/0x2b0 kernel/sched/core.c:6766 io_ring_ctx_wait_and_kill+0xa9/0x5f0 fs/io_uring.c:7315 io_uring_release+0x3e/0x50 fs/io_uring.c:7337 __fput+0x33e/0x880 fs/file_table.c:280 task_work_run+0xf4/0x1b0 kernel/task_work.c:123 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x2fa/0x360 arch/x86/entry/common.c:165 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline] syscall_return_slowpath arch/x86/entry/common.c:279 [inline] do_syscall_64+0x6b1/0x7d0 arch/x86/entry/common.c:305 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x45ca29 Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ff3d167cc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00000000004dac40 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000078 R14: 00000000005255f2 R15: 00007ff3d167d6d4