rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-...0: (0 ticks this GP) idle=746/1/0x4000000000000000 softirq=11126/11126 fqs=5250 (detected by 1, t=10502 jiffies, g=10173, q=4066) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 6827 Comm: syz-executor495 Not tainted 5.8.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:158 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x11/0xe0 kernel/locking/spinlock.c:191 Code: ff 48 c7 c7 90 e0 b4 89 e8 9c 94 ca f9 eb 8e 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 da 76 71 f9 48 89 ef e8 42 71 72 f9 f6 c7 02 75 3a 48 c7 c0 88 RSP: 0018:ffffc90000007ce8 EFLAGS: 00000082 RAX: 0000000000000000 RBX: 0000000000000082 RCX: ffffffff815afb70 RDX: 0000000000000000 RSI: ffffffff839b54c4 RDI: ffffffff8cb52258 RBP: ffffffff8cb52240 R08: ffffffff8cb52240 R09: 0000000000000003 R10: fffff52000000f8e R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff89bd0d40 R14: 1ffff92000000fa2 R15: ffff88809f6d5b40 FS: 0000000001936880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000610 CR3: 000000009fe0b000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: debug_object_deactivate lib/debugobjects.c:732 [inline] debug_object_deactivate+0x264/0x300 lib/debugobjects.c:698 debug_hrtimer_deactivate kernel/time/hrtimer.c:421 [inline] debug_deactivate kernel/time/hrtimer.c:482 [inline] __run_hrtimer kernel/time/hrtimer.c:1488 [inline] __hrtimer_run_queues+0x3cb/0xfc0 kernel/time/hrtimer.c:1584 hrtimer_interrupt+0x32a/0x930 kernel/time/hrtimer.c:1646 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1080 [inline] __sysvec_apic_timer_interrupt+0x142/0x5e0 arch/x86/kernel/apic/apic.c:1097 asm_call_on_stack+0xf/0x20 arch/x86/entry/entry_64.S:711 __run_on_irqstack arch/x86/include/asm/irq_stack.h:22 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:48 [inline] sysvec_apic_timer_interrupt+0xe0/0x120 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:585 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:770 [inline] RIP: 0010:on_each_cpu+0x149/0x240 kernel/smp.c:702 Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 e6 00 00 00 48 83 3d cf 0d 4c 08 00 0f 84 af 00 00 00 e8 0c ea 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 fd e9 0a 00 bf 01 00 00 00 e8 13 a0 e6 ff 31 ff RSP: 0018:ffffc900017b7d70 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000293 RCX: 0000000000000000 RDX: ffff888096160580 RSI: ffffffff8168d2c4 RDI: 0000000000000293 RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc900017b7ed0 R15: ffffffffa0df91df clock_was_set+0x18/0x20 kernel/time/hrtimer.c:872 do_settimeofday64 kernel/time/timekeeping.c:1257 [inline] do_settimeofday64+0x350/0x4e0 kernel/time/timekeeping.c:1223 do_sys_settimeofday64 kernel/time/time.c:195 [inline] do_sys_settimeofday64+0x1de/0x260 kernel/time/time.c:169 __do_sys_clock_settime kernel/time/posix-timers.c:1079 [inline] __se_sys_clock_settime kernel/time/posix-timers.c:1067 [inline] __x64_sys_clock_settime+0x197/0x260 kernel/time/posix-timers.c:1067 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x443849 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 fb 0f fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffc077ecab8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443849 RDX: 0000000000443849 RSI: 0000000020000380 RDI: 0000000000000000 RBP: 00007ffc077ecac0 R08: 0000000001bbbbbb R09: 0000000001bbbbbb R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffc077ecad0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000