rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (12 ticks this GP) idle=38f/1/0x4000000000000002 softirq=66766/66766 fqs=2246 
	(detected by 1, t=10505 jiffies, g=97949, q=3934)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 22290 Comm: syz.0.3379 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:pvclock_clocksource_read+0x7b/0x770 arch/x86/kernel/pvclock.c:68
Code: 8c 24 88 00 00 00 49 8d 49 03 4c 89 c8 48 c1 e8 03 48 89 84 24 80 00 00 00 48 89 4c 24 48 48 c1 e9 03 48 89 4c 24 78 48 89 f0 <48> c1 e8 03 48 89 44 24 70 4c 89 d0 48 c1 e8 03 48 89 44 24 68 49
RSP: 0018:ffffc900000077f0 EFLAGS: 00000806
RAX: ffffffff8f10601c RBX: 1ffffffff1e20c00 RCX: 1ffffffff1e20c03
RDX: 1ffffffff1e20c00 RSI: ffffffff8f10601c RDI: ffffffff8f106000
RBP: 0000000000010000 R08: ffffffff8f106008 R09: ffffffff8f106018
R10: ffffffff8f106010 R11: ffffffff8f106003 R12: dffffc0000000000
R13: 0000000000000000 R14: ffff888044390000 R15: ffffffff8be3f820
FS:  00007fce40fd66c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000003bb00000000 CR3: 000000004096b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 kvm_clock_read arch/x86/kernel/kvmclock.c:79 [inline]
 kvm_sched_clock_read+0x14/0x40 arch/x86/kernel/kvmclock.c:91
 sched_clock_cpu+0x15/0x3c0 kernel/sched/clock.c:371
 irqtime_account_irq+0x6a/0x1b0 kernel/sched/cputime.c:61
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x45/0xc0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 42 0b 9d 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007a20 EFLAGS: 00000206
RAX: 5287606879cbb800 RBX: 1ffff92000000f48 RCX: 5287606879cbb800
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a48c0
RBP: ffffc90000007b00 R08: ffffffff901f1177 R09: 1ffffffff203e22e
R10: dffffc0000000000 R11: fffffbfff203e22f R12: ffffffff8c323400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 process_backlog+0x3e5/0x770 net/core/dev.c:6543
 __napi_poll+0xbb/0x430 net/core/dev.c:7101
 napi_poll net/core/dev.c:7168 [inline]
 net_rx_action+0x522/0xa80 net/core/dev.c:7258
 handle_softirqs+0x336/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_is_held_type+0x64/0x190 kernel/locking/lockdep.c:5664
Code: 00 00 00 65 48 8b 1d 2b 38 41 76 83 bb ec 0a 00 00 00 0f 85 df 00 00 00 41 89 f7 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 <4c> 8b 2c 24 fa 48 c7 c7 e0 39 2b 8a e8 4b 0e 00 00 65 ff 05 74 41
RSP: 0018:ffffc90002f3f518 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffff888044390000 RCX: ffff888044390000
RDX: 0000000000000010 RSI: 00000000ffffffff RDI: ffffffff8c31efc0
RBP: 00000000ffffffff R08: ffffc90002f3f6cf R09: ffffc90002f3f6c0
R10: dffffc0000000000 R11: fffff520005e7eda R12: ffff8880b9000000
R13: ffffc90002f3f6c0 R14: ffffffff8c31efc0 R15: 00000000ffffffff
 lock_is_held include/linux/lockdep.h:287 [inline]
 schedule_debug kernel/sched/core.c:5621 [inline]
 __schedule+0x1e5/0x4350 kernel/sched/core.c:6286
 preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:6571
 preempt_schedule+0xbc/0xd0 kernel/sched/core.c:6596
 preempt_schedule_thunk+0x16/0x18 arch/x86/entry/thunk_64.S:34
 try_to_wake_up+0x6cc/0x1020 kernel/sched/core.c:4171
 wake_up_process kernel/sched/core.c:4234 [inline]
 wake_up_q+0x78/0xc0 kernel/sched/core.c:953
 rwsem_wake+0xe7/0x130 kernel/locking/rwsem.c:1203
 mmap_write_unlock include/linux/mmap_lock.h:105 [inline]
 dup_mmap kernel/fork.c:629 [inline]
 dup_mm kernel/fork.c:1472 [inline]
 copy_mm+0xf67/0x13d0 kernel/fork.c:1524
 copy_process+0x17a7/0x3e70 kernel/fork.c:2292
 kernel_clone+0x23f/0x990 kernel/fork.c:2682
 __do_sys_clone kernel/fork.c:2799 [inline]
 __se_sys_clone kernel/fork.c:2783 [inline]
 __x64_sys_clone+0x19a/0x210 kernel/fork.c:2783
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fce42dc0159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fce40fd5fd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fce43048180 RCX: 00007fce42dc0159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020800000
RBP: 00007fce42e5706b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007fce43048218 R14: 00007fce43048180 R15: 00007ffd0a115258
 </TASK>