rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-...D } 2635 jiffies s: 22969 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: 5110 Comm: syz-executor.1 Not tainted 6.8.0-rc6-syzkaller-00194-g17ba56605bfd #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0x3a/0xb0 kernel/rcu/tree.c:700
Code: e8 eb 98 ec 09 89 c3 83 f8 08 73 7a 49 bf 00 00 00 00 00 fc ff df 4c 8d 34 dd 40 29 ae 8d 4c 89 f0 48 c1 e8 03 42 80 3c 38 00 <74> 08 4c 89 f7 e8 ec b7 7a 00 48 c7 c3 88 6d 03 00 49 03 1e 48 89
RSP: 0018:ffffc900001f0b40 EFLAGS: 00000046
RAX: 1ffffffff1b5c529 RBX: 0000000000000001 RCX: ffffffff81711744
RDX: 0000000000000000 RSI: ffffffff8bfe6dc0 RDI: ffffffff8bfe6d80
RBP: ffffc900001f0ca8 R08: ffffffff8f856bef R09: 1ffffffff1f0ad7d
R10: dffffc0000000000 R11: fffffbfff1f0ad7e R12: 1ffff9200003e174
R13: dffffc0000000000 R14: ffffffff8dae2948 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9500000(0063) knlGS:000000005712f400
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7408b6c CR3: 000000003209c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xe3/0x530 kernel/locking/lockdep.c:5725
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0xd3/0x120 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1693 [inline]
 __hrtimer_run_queues+0x659/0xd00 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1065 [inline]
 __sysvec_apic_timer_interrupt+0x107/0x3a0 arch/x86/kernel/apic/apic.c:1082
 sysvec_apic_timer_interrupt+0x92/0xb0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:preempt_count_add+0x5c/0x190 kernel/sched/core.c:5865
Code: 12 00 75 07 65 8b 05 eb 72 9f 7e 65 01 1d e4 72 9f 7e 48 c7 c0 c0 53 48 94 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e3 00 00 00 <83> 3d 7d 07 e4 12 00 75 11 65 8b 05 bc 72 9f 7e 0f b6 c0 3d f5 00
RSP: 0018:ffffc900046aefa8 EFLAGS: 00000297
RAX: 0000000000000004 RBX: 0000000000000001 RCX: ffffffff94485303
RDX: ffff888028f8bb80 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc900046af0a0 R08: ffffffff81404df1 R09: ffffc900046af190
R10: 0000000000000003 R11: ffffffff818044c0 R12: ffff888028f8bb80
R13: dffffc0000000000 R14: 0000000000000001 R15: dffffc0000000000
 unwind_next_frame+0xc1/0x29e0 arch/x86/kernel/unwind_orc.c:479
 arch_stack_walk+0x150/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x117/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:589
 poison_slab_object+0xa6/0xe0 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2121 [inline]
 slab_free mm/slub.c:4299 [inline]
 kfree+0x14a/0x380 mm/slub.c:4409
 vfree+0x24c/0x2e0 mm/vmalloc.c:2846
 compat_copy_entries_to_user+0x5b3/0x680 net/ipv6/netfilter/ip6_tables.c:1575
 compat_get_entries net/ipv6/netfilter/ip6_tables.c:1605 [inline]
 do_ip6t_get_ctl+0xe46/0x1820 net/ipv6/netfilter/ip6_tables.c:1666
 nf_getsockopt+0x299/0x2c0 net/netfilter/nf_sockopt.c:116
 ipv6_getsockopt+0x263/0x380 net/ipv6/ipv6_sockglue.c:1488
 tcp_getsockopt+0x163/0x1c0 net/ipv4/tcp.c:4372
 do_sock_getsockopt+0x373/0x850 net/socket.c:2373
 __sys_getsockopt+0x270/0x330 net/socket.c:2402
 __do_compat_sys_socketcall net/compat.c:494 [inline]
 __se_compat_sys_socketcall+0x348/0x1430 net/compat.c:423
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0xbd/0x120 arch/x86/entry/common.c:321
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:346
 entry_SYSENTER_compat_after_hwframe+0x7c/0x86
RIP: 0023:0xf72b0579
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f7551620 EFLAGS: 00000206 ORIG_RAX: 0000000000000066
RAX: ffffffffffffffda RBX: 000000000000000f RCX: 00000000f7551658
RDX: 00000000f75516d4 RSI: 00000000f755172c RDI: 00000000f7406ff4
RBP: 00000000f7409828 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>