rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 4249 jiffies s: 1525 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: 4376 Comm: syz.2.17 Not tainted 6.1.119-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:check_preemption_disabled+0x2/0x110 lib/smp_processor_id.c:13
Code: 3c 8d 48 89 de e8 7e 8b bd f9 e9 6d ff ff ff cc cc cc cc cc cc cc cc cc 48 c7 c7 a0 61 5e 8b 48 c7 c6 e0 61 5e 8b eb 00 41 57 <41> 56 41 54 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc900001dff60 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815456d4
RDX: 0000000000000000 RSI: ffffffff8b0afac0 RDI: ffffffff8b5e6200
RBP: 0000000000000009 R08: dffffc0000000000 R09: fffffbfff1d35ef6
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d32fe00
R13: ffff8880310a5d98 R14: ffff8880b8f3b880 R15: dffffc0000000000
FS:  00007fb81c5a26c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fba8a947bac CR3: 000000001a670000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raise_softirq_irqoff+0xb3/0x220 kernel/softirq.c:717
 raise_softirq_irqoff+0x5/0x40 kernel/softirq.c:689
 rcu_read_unlock_special+0x3d2/0x540 kernel/rcu/tree_plugin.h:655
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 __perf_event_output kernel/events/core.c:7717 [inline]
 perf_event_output_forward+0x2af/0x330 kernel/events/core.c:7726
 __perf_event_overflow+0x45e/0x640 kernel/events/core.c:9472
 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10880
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:rcu_read_unlock_special+0x84/0x540 kernel/rcu/tree_plugin.h:682
Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 7d 18 8e 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a
RSP: 0018:ffffc900001e0800 EFLAGS: 00000206
RAX: 88ac66eb9e2f1b00 RBX: 1ffff9200003c108 RCX: ffffffff816b124a
RDX: dffffc0000000000 RSI: ffffffff8b0c01c0 RDI: ffffffff8b5e6200
RBP: ffffc900001e08d8 R08: dffffc0000000000 R09: fffffbfff224986b
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8d32fe00
R13: ffff8880310a5d98 R14: ffffc900001e0840 R15: 1ffff9200003c104
 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ipv6_get_ifaddr+0x6f3/0x770 net/ipv6/addrconf.c:2061
 ndisc_send_rs+0x92/0x6a0 net/ipv6/ndisc.c:690
 addrconf_rs_timer+0x357/0x610 net/ipv6/addrconf.c:3963
 call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504
 expire_timers kernel/time/timer.c:1549 [inline]
 __run_timers+0x67c/0x890 kernel/time/timer.c:1820
 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833
 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571
 __do_softirq kernel/softirq.c:605 [inline]
 invoke_softirq kernel/softirq.c:445 [inline]
 __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__read_once_word_nocheck+0x0/0x10 include/asm-generic/rwonce.h:67
Code: e1 07 38 c1 0f 8c dc fc ff ff 48 89 df e8 d8 24 a5 00 48 ba 00 00 00 00 00 fc ff df e9 c5 fc ff ff 66 0f 1f 84 00 00 00 00 00 <48> 8b 07 c3 cc cc cc cc cc cc cc cc cc cc cc cc 31 c0 81 ff 03 00
RSP: 0018:ffffc900043e7798 EFLAGS: 00000283
RAX: ffffc900043e78e0 RBX: ffffc900043e8000 RCX: 1ffff9200087cf1c
RDX: 1ffffffff1e2cb09 RSI: 0000000000000000 RDI: ffffc900043e78d8
RBP: 1ffff9200087cf1e R08: 0000000000000009 R09: ffffc900043e78e0
R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900043e78e0
R13: ffffc900043e78d8 R14: ffffc900043e0000 R15: 1ffff9200087cf1d
 deref_stack_reg arch/x86/kernel/unwind_orc.c:360 [inline]
 unwind_next_frame+0xd5d/0x2220 arch/x86/kernel/unwind_orc.c:539
 __unwind_start+0x59d/0x720 arch/x86/kernel/unwind_orc.c:717
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xdb/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x27/0x40 mm/kasan/generic.c:516
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:177 [inline]
 slab_free_hook mm/slub.c:1724 [inline]
 slab_free_freelist_hook mm/slub.c:1750 [inline]
 slab_free mm/slub.c:3661 [inline]
 kmem_cache_free+0x292/0x510 mm/slub.c:3683
 do_sys_openat2+0x1f9/0x4f0 fs/open.c:1327
 do_sys_open fs/open.c:1334 [inline]
 __do_sys_openat fs/open.c:1350 [inline]
 __se_sys_openat fs/open.c:1345 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1345
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fb81b780809
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:00007fb81c5a2058 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fb81b945fa0 RCX: 00007fb81b780809
RDX: 00000000000026e1 RSI: 0000000020000300 RDI: ffffffffffffff9c
RBP: 00007fb81b7f393e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb81b945fa0 R15: 00007ffd672102c8
 </TASK>