rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=291/1/0x4000000000000000 softirq=6756/6761 fqs=5249 (detected by 0, t=10502 jiffies, g=6849, q=6165) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4598 Comm: syz-executor.0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:check_wait_context kernel/locking/lockdep.c:4709 [inline] RIP: 0010:__lock_acquire+0x9a3/0x7c60 kernel/locking/lockdep.c:4962 Code: c0 0f 85 e9 00 00 00 41 0f b6 06 84 c0 74 0e 41 0f b6 cd 44 0f b6 e8 38 c1 44 0f 42 e9 48 8b 84 24 88 00 00 00 42 0f b6 04 00 <84> c0 0f 85 e3 00 00 00 48 ff c3 48 8b 44 24 40 48 63 00 49 83 c7 RSP: 0018:ffffc90000dd0860 EFLAGS: 00000046 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8ffbd0c8 RBP: ffffc90000dd0ab0 R08: dffffc0000000000 R09: fffffbfff1ff7a1a R10: fffffbfff1ff7a1a R11: 1ffffffff1ff7a19 R12: ffff888076980b38 R13: 0000000000000002 R14: ffffffff8f949838 R15: ffff888076980b38 FS: 00007fa20ddce6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f77c9f4d000 CR3: 000000001fba1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x197/0x3f0 kernel/locking/lockdep.c:5623 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0xa4/0xf0 kernel/locking/spinlock.c:162 debug_object_deactivate+0x63/0x340 lib/debugobjects.c:749 debug_hrtimer_deactivate kernel/time/hrtimer.c:415 [inline] debug_deactivate+0x1d/0x1c0 kernel/time/hrtimer.c:471 __run_hrtimer kernel/time/hrtimer.c:1653 [inline] __hrtimer_run_queues+0x2db/0xc40 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x3bb/0x8d0 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1097 [inline] __sysvec_apic_timer_interrupt+0x137/0x4a0 arch/x86/kernel/apic/apic.c:1114 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0x100 kernel/locking/spinlock.c:194 Code: 74 05 e8 5e 2c cb f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 f6 b5 9e f7 65 8b 05 87 b3 4f 76 85 c0 74 3c 48 c7 04 24 0e 36 RSP: 0018:ffffc90002e8f920 EFLAGS: 00000206 RAX: 80154322e4be0200 RBX: 0000000000000a06 RCX: 80154322e4be0200 RDX: dffffc0000000000 RSI: ffffffff8a0b18a0 RDI: 0000000000000001 RBP: ffffc90002e8f9b0 R08: dffffc0000000000 R09: fffffbfff1ff7a19 R10: fffffbfff1ff7a19 R11: 1ffffffff1ff7a18 R12: dffffc0000000000 R13: dffffc0000000000 R14: ffff8880b902a240 R15: 1ffff920005d1f24 clock_was_set+0x642/0x840 kernel/time/hrtimer.c:955 timekeeping_inject_offset+0x578/0x620 kernel/time/timekeeping.c:1378 do_adjtimex+0x418/0x9b0 kernel/time/timekeeping.c:2427 do_clock_adjtime kernel/time/posix-timers.c:1155 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1167 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1158 [inline] __x64_sys_clock_adjtime+0x1f0/0x2a0 kernel/time/posix-timers.c:1158 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fa20ea4dca9 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:00007fa20ddce0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007fa20eb7bf80 RCX: 00007fa20ea4dca9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007fa20ea9947e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007fa20eb7bf80 R15: 00007ffd35c25f58