rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=2f7/1/0x4000000000000000 softirq=26872/26873 fqs=5248 (detected by 0, t=10502 jiffies, g=41325, q=281) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8801 Comm: syz-executor.2 Not tainted 5.15.158-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:85 [inline] RIP: 0010:preempt_count_sub+0x5b/0x160 kernel/sched/core.c:5528 Code: 8b 05 a1 0d ab 7e 89 c1 81 e1 ff ff ff 7f 39 d9 7c 23 81 fb fe 00 00 00 77 07 0f b6 c0 85 c0 74 55 65 8b 05 7f 0d ab 7e f7 db <65> 01 1d 76 0d ab 7e 5b 41 5e c3 e8 c5 46 ae 02 85 c0 74 f3 48 c7 RSP: 0018:ffffc90000dd0c08 EFLAGS: 00000097 RAX: 0000000000010003 RBX: 00000000ffffffff RCX: 0000000000010003 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001 RBP: ffffc90000dd0cb8 R08: dffffc0000000000 R09: fffffbfff22c4028 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920001ba184 R14: dffffc0000000000 R15: 0000000000000046 FS: 00007fdd4b22c6c0(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003a80 CR3: 000000007ce8f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0xd9/0x130 kernel/locking/spinlock.c:194 debug_object_activate+0x2f4/0x4e0 lib/debugobjects.c:711 debug_hrtimer_activate kernel/time/hrtimer.c:420 [inline] debug_activate kernel/time/hrtimer.c:475 [inline] enqueue_hrtimer+0x30/0x390 kernel/time/hrtimer.c:1084 __run_hrtimer kernel/time/hrtimer.c:1703 [inline] __hrtimer_run_queues+0x6b6/0xcf0 kernel/time/hrtimer.c:1750 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 02 e8 a2 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 f7 14 30 f7 65 8b 05 c8 22 db 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc90002e278c0 EFLAGS: 00000206 RAX: 4b5fa38045b5b900 RBX: 1ffff920005c4f1c RCX: ffffffff913eef03 RDX: dffffc0000000000 RSI: ffffffff8a8b2980 RDI: 0000000000000001 RBP: ffffc90002e27960 R08: ffffffff8186dcf0 R09: ffffed100bd42392 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff920005c4f18 R14: ffffc90002e278e0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:418 [inline] timerfd_clock_was_set+0x1b3/0x2a0 fs/timerfd.c:113 clock_was_set+0x7e8/0x880 kernel/time/hrtimer.c:980 timekeeping_inject_offset+0x65f/0x710 kernel/time/timekeeping.c:1378 do_adjtimex+0x511/0xaa0 kernel/time/timekeeping.c:2427 do_clock_adjtime kernel/time/posix-timers.c:1154 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1166 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1157 [inline] __x64_sys_clock_adjtime+0x1dc/0x290 kernel/time/posix-timers.c:1157 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fdd4ccd9ee9 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:00007fdd4b22c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007fdd4ce09050 RCX: 00007fdd4ccd9ee9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fdd4cd2649e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007fdd4ce09050 R15: 00007ffca7e67fa8