rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (1 GPs behind) idle=6a3/1/0x4000000000000000 softirq=74636/74638 fqs=5243 (detected by 1, t=10502 jiffies, g=115601, q=2389) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 28392 Comm: syz-executor.5 Not tainted 5.15.137-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 RIP: 0010:advance_sched+0x15c/0x940 Code: c0 be ff ff ff ff e8 33 ee b0 01 89 c3 31 ff 89 c6 e8 e8 a8 15 f9 85 db 0f 84 95 03 00 00 e8 7b a5 15 f9 eb 05 e8 74 a5 15 f9 <48> 8b 5c 24 18 49 8d 45 f8 48 89 c1 48 c1 e9 03 48 89 4c 24 30 42 RSP: 0018:ffffc90000007cc0 EFLAGS: 00000046 RAX: ffffffff886a7cd5 RBX: 0000000000000001 RCX: ffff88803806bb80 RDX: 0000000000010002 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88807b014ae8 R08: ffffffff886a7cc8 R09: 0000000000000003 R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff88807b014800 R13: ffff88807b014b40 R14: dffffc0000000000 R15: ffff88807b014b28 FS: 00007f20a470a6c0(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f20a62a4000 CR3: 0000000014fb3000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1685 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline] __sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:finish_lock_switch+0x91/0x100 kernel/sched/core.c:4781 Code: 45 31 c9 68 57 62 59 81 e8 0c 1a 09 00 48 83 c4 08 4c 89 ff e8 b0 da fe ff 66 90 4c 89 ff e8 e6 85 cb 08 e8 01 41 2d 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87 RSP: 0018:ffffc900040bf578 EFLAGS: 00000282 RAX: 9fd87933102fb700 RBX: ffff888018a49df4 RCX: ffffffff913c5003 RDX: dffffc0000000000 RSI: ffffffff8a8b0be0 RDI: ffffffff8ad87b40 RBP: ffffc900040bf5f0 R08: ffffffff8186a3c0 R09: ffffed10173472e1 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff1101734748b R14: ffff8880b9a3a458 R15: ffff8880b9a39700 finish_task_switch+0x134/0x630 kernel/sched/core.c:4898 context_switch kernel/sched/core.c:5029 [inline] __schedule+0x12cc/0x45b0 kernel/sched/core.c:6372 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6548 preempt_schedule+0xd9/0xe0 kernel/sched/core.c:6573 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34 try_to_wake_up+0x8a8/0x1300 kernel/sched/core.c:4148 wake_up_process kernel/sched/core.c:4211 [inline] wake_up_q+0x8b/0xd0 kernel/sched/core.c:950 futex_wake+0x607/0x750 kernel/futex/core.c:1692 do_futex+0x1394/0x1810 kernel/futex/core.c:3977 __do_sys_futex kernel/futex/core.c:4049 [inline] __se_sys_futex+0x407/0x490 kernel/futex/core.c:4030 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7f20a6188ae9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 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 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f20a470a178 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f20a62a7f88 RCX: 00007f20a6188ae9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f20a62a7f8c RBP: 00007f20a62a7f80 R08: 0000000000000010 R09: 00007f20a470a6c0 R10: 0000000000000005 R11: 0000000000000246 R12: 00007f20a62a7f8c R13: 000000000000000b R14: 00007fffb51cf2d0 R15: 00007fffb51cf3b8