rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 1-...0: (0 ticks this GP) idle=e3fc/1/0x4000000000000000 softirq=17575/17575 fqs=2099 rcu: hardirqs softirqs csw/system rcu: number: 0 0 0 rcu: cputime: 0 0 0 ==> 52500(ms) rcu: (detected by 0, t=10504 jiffies, g=13589, q=687 ncpus=2) Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 6694 Comm: syz.4.193 Not tainted 6.12.0-rc6-syzkaller-00099-g7758b206117d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:rcu_read_lock include/linux/rcupdate.h:850 [inline] RIP: 0010:advance_sched+0xa22/0xca0 net/sched/sch_taprio.c:985 Code: 03 af f7 48 8d 1d 00 00 00 00 48 c7 c7 a0 7d 93 8e 31 f6 31 d2 b9 02 00 00 00 45 31 c0 45 31 c9 53 e8 52 a1 a3 f7 48 83 c4 08 39 98 fa 01 89 c5 31 ff 89 c6 e8 4e 38 c8 f7 85 ed 74 10 e8 55 RSP: 0018:ffffc90000a18c90 EFLAGS: 00000096 RAX: fff71f0ad590b000 RBX: ffffffff89cca622 RCX: fff71f0ad590b000 RDX: dffffc0000000000 RSI: ffffffff8c0adc40 RDI: ffffffff8c6109a0 RBP: 180bab3d9c000000 R08: ffffffff942cd807 R09: 1ffffffff2859b00 R10: dffffc0000000000 R11: fffffbfff2859b01 R12: dffffc0000000000 R13: 180bab3d98000000 R14: ffff88807bbc1800 R15: ffff88805eff6360 FS: 00007f48174b56c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f48174b4f98 CR3: 000000007f03c000 CR4: 0000000000350ef0 Call Trace: __run_hrtimer kernel/time/hrtimer.c:1691 [inline] __hrtimer_run_queues+0x59d/0xd50 kernel/time/hrtimer.c:1755 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline] __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 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 be aa 2d f6 f6 44 24 21 02 75 52 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 93 3a 92 f5 65 8b 05 04 e2 32 74 85 c0 74 43 48 c7 04 24 0e 36 RSP: 0018:ffffc90004807920 EFLAGS: 00000206 RAX: fff71f0ad590b000 RBX: 1ffff92000900f28 RCX: ffffffff8170bffa RDX: dffffc0000000000 RSI: ffffffff8c0acac0 RDI: 0000000000000001 RBP: ffffc900048079b0 R08: ffffffff942cd807 R09: 1ffffffff2859b00 R10: dffffc0000000000 R11: fffffbfff2859b01 R12: dffffc0000000000 R13: 1ffff92000900f24 R14: ffffc90004807940 R15: 0000000000000246 clock_was_set+0x686/0x810 kernel/time/hrtimer.c:968 timekeeping_inject_offset+0x4e8/0x580 kernel/time/timekeeping.c:1524 do_adjtimex+0x51d/0xae0 kernel/time/timekeeping.c:2575 do_clock_adjtime kernel/time/posix-timers.c:1174 [inline] __do_sys_clock_adjtime kernel/time/posix-timers.c:1186 [inline] __se_sys_clock_adjtime kernel/time/posix-timers.c:1177 [inline] __x64_sys_clock_adjtime+0x1e3/0x290 kernel/time/posix-timers.c:1177 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f481677e719 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f48174b5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 RAX: ffffffffffffffda RBX: 00007f4816935f80 RCX: 00007f481677e719 RDX: 0000000000000000 RSI: 0000000020000480 RDI: 0000000000000000 RBP: 00007f48167f139e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4816935f80 R15: 00007ffc0288e488