rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 0-....: (10499 ticks this GP) idle=ff2/1/0x4000000000000002 softirq=103049/103058 fqs=5018 (t=10500 jiffies g=201177 q=7861) NMI backtrace for cpu 0 CPU: 0 PID: 11255 Comm: syz-executor.2 Not tainted 5.7.0-rc7-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:___might_sleep+0x155/0x2b0 kernel/sched/core.c:6768 Code: a1 73 31 08 48 8b 15 da 4c 6e 0a 48 83 e8 64 48 39 d0 0f 89 cc ad 01 00 48 85 d2 0f 84 c3 ad 01 00 5b 5d 41 5c 41 5d 41 5e c3 66 fe ff ff f6 c4 02 0f 84 29 ff ff ff 65 4c 8b 2c 25 00 1f 02 RSP: 0018:ffffc90018f9fa18 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 1ffff11012b80497 RSI: 1ffff11012b80540 RDI: ffff888095c024b8 RBP: ffffffff8837bc40 R08: 0000000000000001 R09: ffffed1012592e61 R10: ffff888092c97307 R11: ffffed1012592e60 R12: 0000000000001c9b R13: 0000000000000000 R14: ffff888095c02140 R15: ffffffff81d52920 io_ring_ctx_wait_and_kill+0xa9/0x5f0 fs/io_uring.c:7323 io_uring_release+0x3e/0x50 fs/io_uring.c:7345 __fput+0x33e/0x880 fs/file_table.c:280 task_work_run+0xf4/0x1b0 kernel/task_work.c:123 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xb34/0x2dd0 kernel/exit.c:796 do_group_exit+0x125/0x340 kernel/exit.c:894 get_signal+0x47b/0x24e0 kernel/signal.c:2739 do_signal+0x81/0x2240 arch/x86/kernel/signal.c:784 exit_to_usermode_loop+0x26c/0x360 arch/x86/entry/common.c:161 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: Bad RIP value. RSP: 002b:00007ff719aecc78 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: 0000000000000003 RBX: 00000000004e0f40 RCX: 000000000045ca29 RDX: 0000000000000000 RSI: 0000000020000580 RDI: 00000000000000f1 RBP: 000000000078c0e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 0000000000000204 R14: 00000000004c445f R15: 00007ff719aed6d4