rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (1 GPs behind) idle=af6/1/0x4000000000000000 softirq=10090/10091 fqs=5250 (detected by 0, t=10502 jiffies, g=9189, q=417) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 6822 Comm: syz-executor851 Not tainted 5.8.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:enqueue_hrtimer+0x0/0x3f0 kernel/time/hrtimer.c:964 Code: ff ff 48 c7 c7 88 2c aa 8a e8 ec 2d 4f 00 e9 1e fe ff ff 48 c7 c7 88 2c aa 8a e8 db 2d 4f 00 e9 e9 fe ff ff 66 0f 1f 44 00 00 <41> 57 41 56 41 89 d6 41 55 41 54 49 89 fc 55 48 89 f5 53 e8 a8 c9 RSP: 0018:ffffc90000da8de0 EFLAGS: 00000046 RAX: 0000000080010002 RBX: 0000000000000000 RCX: ffffffff81640841 RDX: 0000000000000000 RSI: ffff8880ae727840 RDI: ffff8880945c9340 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000003 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880ae727740 R13: ffff8880ae727840 R14: ffff8880945c9340 R15: dffffc0000000000 FS: 0000000000b73880(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000610 CR3: 000000009ea4a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1537 [inline] __hrtimer_run_queues+0xc1e/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:587 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:765 [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 97 10 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 83 a2 e6 ff 31 ff RSP: 0018:ffffc90000ea7d70 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000293 RCX: 0000000000000000 RDX: ffff8880909b21c0 RSI: ffffffff8168cff4 RDI: 0000000000000293 RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffc90000ea7ed0 R15: ffffffffa0f129a4 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: Bad RIP value. RSP: 002b:00007ffe1c611538 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443849 RDX: 0000000000443849 RSI: 0000000020000400 RDI: 0000000000000000 RBP: 00007ffe1c611540 R08: 0000000001bbbbbb R09: 0000000001bbbbbb R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffe1c611550 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000