rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-...D } 2680 jiffies s: 43101 root: 0x1/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5064 Comm: syz-executor.4 Not tainted 6.5.0-rc1-syzkaller-00276-g20edcec23f92 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:119 [inline] RIP: 0010:lock_acquire+0x110/0x520 kernel/locking/lockdep.c:5737 Code: 84 bb 02 00 00 48 c7 c0 44 89 98 8e 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 df 02 00 00 83 3d 8a 2d 2d 0d 00 0f 84 41 01 00 00 <65> 8b 05 31 2d 97 7e 85 c0 0f 85 8a 01 00 00 65 48 8b 1d 69 59 98 RSP: 0018:ffffc90000007a00 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816b5b84 RDX: 0000000000000000 RSI: ffffffff8b58a460 RDI: ffffffff8b58a420 RBP: ffffc90000007b48 R08: ffffffff8e9854af R09: 1ffffffff1d30a95 R10: dffffc0000000000 R11: fffffbfff1d30a96 R12: 1ffff92000000f48 R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000555555f96480(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e825000 CR3: 00000000397de000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162 debug_object_activate+0x163/0x530 lib/debugobjects.c:717 debug_hrtimer_activate kernel/time/hrtimer.c:422 [inline] debug_activate kernel/time/hrtimer.c:477 [inline] enqueue_hrtimer+0x30/0x310 kernel/time/hrtimer.c:1087 __run_hrtimer kernel/time/hrtimer.c:1705 [inline] __hrtimer_run_queues+0x6c0/0xd10 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1098 [inline] __sysvec_apic_timer_interrupt+0x13f/0x480 arch/x86/kernel/apic/apic.c:1115 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1109 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:finish_lock_switch+0x95/0x110 kernel/sched/core.c:5134 Code: 45 31 c9 68 47 9d 61 81 e8 48 bd 09 00 48 83 c4 08 4c 89 ff e8 9c ab fe ff 66 90 4c 89 ff e8 d2 e5 64 09 e8 1d 25 31 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 83 RSP: 0018:ffffc900046ff958 EFLAGS: 00000282 RAX: 0ccc7c39f7819e00 RBX: ffff88802c8c0034 RCX: ffffffff91fa9203 RDX: dffffc0000000000 RSI: ffffffff8b0a9040 RDI: ffffffff8b58a480 RBP: ffffc900046ff9d0 R08: ffffffff8e9854af R09: 1ffffffff1d30a95 R10: dffffc0000000000 R11: fffffbfff1d30a96 R12: dffffc0000000000 R13: 1ffff1101730799b R14: ffff8880b983ccd8 R15: ffff8880b983bf80 finish_task_switch+0x134/0x650 kernel/sched/core.c:5251 context_switch kernel/sched/core.c:5384 [inline] __schedule+0x187b/0x48f0 kernel/sched/core.c:6710 schedule+0xc3/0x180 kernel/sched/core.c:6786 do_nanosleep+0x18a/0x610 kernel/time/hrtimer.c:2047 hrtimer_nanosleep+0x226/0x460 kernel/time/hrtimer.c:2100 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1396 [inline] __se_sys_clock_nanosleep+0x327/0x3b0 kernel/time/posix-timers.c:1373 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f0d634a7f35 Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 f6 b9 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 4f ba ff ff 48 8b 04 24 48 83 c4 28 f7 d8 RSP: 002b:00007ffd0fecbba0 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: ffffffffffffffda RBX: 000000000000091f RCX: 00007f0d634a7f35 RDX: 00007ffd0fecbbe0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007ffd0fecbc6c R08: 0000000000000000 R09: 00007ffd0ffda0b0 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032 R13: 000000000017d26f R14: 000000000017d22f R15: 0000000000000004