rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2636 jiffies s: 581 root: 0x2/. rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5044 Comm: syz-executor955 Not tainted 6.6.0-rc4-syzkaller-00229-g82714078aee4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 RIP: 0010:__rcu_read_unlock+0x0/0x570 kernel/rcu/tree_plugin.h:419 Code: 24 10 e9 85 f8 ff ff 48 8b 7c 24 28 e8 89 25 6b 00 e9 5b fa ff ff 48 8b 7c 24 30 e8 da 24 6b 00 e9 2b fa ff ff 0f 1f 44 00 00 0f 1e fa 41 56 41 55 41 54 55 65 48 8b 2c 25 00 bd 03 00 53 48 RSP: 0018:ffffc900003f8d88 EFLAGS: 00000046 RAX: 0000000080010001 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff888028a6a0c0 RSI: ffffffff8864df71 RDI: 0000000000000001 RBP: ffff88807cd21410 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: dffffc0000000000 R12: 0000000000000002 R13: ffff88807cd21400 R14: ffff88807680b340 R15: ffff88807cd21000 FS: 0000555555a5f380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000600 CR3: 0000000027216000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_unlock include/linux/rcupdate.h:781 [inline] advance_sched+0x6c6/0xc60 net/sched/sch_taprio.c:998 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x203/0xc10 kernel/time/hrtimer.c:1752 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1814 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1063 [inline] __sysvec_apic_timer_interrupt+0x105/0x3f0 arch/x86/kernel/apic/apic.c:1080 sysvec_apic_timer_interrupt+0x8e/0xc0 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+0x31/0x70 kernel/locking/spinlock.c:194 Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 56 e5 24 f7 48 89 df e8 4e 64 25 f7 f7 c5 00 02 00 00 75 1f 9c 58 f6 c4 02 75 2f 01 00 00 00 e8 55 ce 16 f7 65 8b 05 66 22 c1 75 85 c0 74 12 5b RSP: 0018:ffffc9000350fa78 EFLAGS: 00000246 RAX: 0000000000000002 RBX: ffff8880b982b940 RCX: 1ffffffff233c916 RDX: 0000000000000000 RSI: ffffffff8a8c9ba0 RDI: ffffffff8ae90b60 RBP: 0000000000000282 R08: 0000000000000001 R09: fffffbfff233c7d0 R10: ffffffff919e3e87 R11: 0000000000000002 R12: 0000000000000004 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 clock_was_set+0x592/0x850 kernel/time/hrtimer.c:972 timekeeping_inject_offset+0x4d1/0x640 kernel/time/timekeeping.c:1395 do_adjtimex+0x373/0xaa0 kernel/time/timekeeping.c:2444 do_clock_adjtime kernel/time/posix-timers.c:1159 [inline] __do_sys_clock_adjtime+0x173/0x280 kernel/time/posix-timers.c:1171 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe9265c4ee9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffff514af48 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe9265c4ee9 RDX: 00007fe9265c4ee9 RSI: 0000000020000280 RDI: 0000000000000000 RBP: 00000000000f4240 R08: 0000000100000000 R09: 0000000100000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffff514afa0 R13: 0000000000000001 R14: 00007ffff514afa0 R15: 0000000000000003 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.940 msecs