rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (0 ticks this GP) idle=ea8c/1/0x4000000000000000 softirq=10541/10542 fqs=5249 rcu: hardirqs softirqs csw/system rcu: number: 0 0 0 rcu: cputime: 0 0 52518 ==> 52500(ms) rcu: (detected by 1, t=10502 jiffies, g=9453, q=20570 ncpus=2) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5435 Comm: syz-executor.0 Not tainted 6.6.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:__lock_acquire+0xb71/0x7f70 kernel/locking/lockdep.c:5090 Code: 42 0f b6 04 00 84 c0 0f 85 f9 13 00 00 83 3d 55 05 2e 0d 00 0f 84 a1 0b 00 00 83 7c 24 08 00 4c 8b 74 24 78 0f 84 ea 01 00 00 <48> 8b 44 24 18 42 0f b6 04 00 84 c0 0f 85 ff 0f 00 00 41 8b 0f f7 RSP: 0018:ffffc90000007800 EFLAGS: 00000002 RAX: 0000000000000002 RBX: 0000000000000002 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff906dc288 RBP: ffffc90000007ac8 R08: dffffc0000000000 R09: 1ffffffff20db851 R10: dffffc0000000000 R11: fffffbfff20db852 R12: ffff88802485c640 R13: ffff88802485bb80 R14: ffff88802485c698 R15: ffff88802485c6b8 FS: 00007f5a32df66c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5459b91095 CR3: 00000000682fb000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5753 __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_deactivate+0x65/0x2b0 lib/debugobjects.c:783 debug_hrtimer_deactivate kernel/time/hrtimer.c:427 [inline] debug_deactivate+0x1b/0x1f0 kernel/time/hrtimer.c:483 __run_hrtimer kernel/time/hrtimer.c:1656 [inline] __hrtimer_run_queues+0x321/0xd10 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x396/0x980 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline] __sysvec_apic_timer_interrupt+0x104/0x390 arch/x86/kernel/apic/apic.c:1080 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1074 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd8/0x140 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 ae 65 13 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 63 bb 8b f6 65 8b 05 44 2c 30 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc900053cf900 EFLAGS: 00000206 RAX: 268b915ce3435b00 RBX: 1ffff92000a79f24 RCX: ffffffff816c9a7a RDX: dffffc0000000000 RSI: ffffffff8b0a7e80 RDI: 0000000000000001 RBP: ffffc900053cf990 R08: ffffffff906dc287 R09: 1ffffffff20db850 R10: dffffc0000000000 R11: fffffbfff20db851 R12: dffffc0000000000 R13: 1ffff92000a79f20 R14: ffffc900053cf920 R15: 0000000000000246 clock_was_set+0x6a1/0x830 kernel/time/hrtimer.c:972 timekeeping_inject_offset+0x663/0x710 kernel/time/timekeeping.c:1395 do_adjtimex+0x515/0xab0 kernel/time/timekeeping.c:2444 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1171 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1162 [inline] __x64_sys_clock_adjtime+0x1e0/0x290 kernel/time/posix-timers.c:1162 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0x90 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5a3207cae9 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:00007f5a32df60c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007f5a3219bf80 RCX: 00007f5a3207cae9 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000000 RBP: 00007f5a320c847a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f5a3219bf80 R15: 00007ffc78576528