rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2876 jiffies s: 1369 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 3735 Comm: syz.1.2 Not tainted 6.1.111-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:467 [inline]
RIP: 0010:lock_acquire+0x215/0x5a0 kernel/locking/lockdep.c:5664
Code: 00 ff 75 10 ff 74 24 40 e8 e8 04 00 00 48 83 c4 20 48 c7 c7 c0 14 0c 8b e8 c8 6f 3c 09 b8 ff ff ff ff 65 0f c1 05 bb f3 97 7e <83> f8 01 0f 85 a4 01 00 00 49 89 de 48 c1 eb 03 42 80 3c 2b 00 74
RSP: 0018:ffffc90000006e40 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffffc90000006ea0 RCX: ffffffff816b3d32
RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5d6dc0
RBP: ffffc90000006f88 R08: dffffc0000000000 R09: fffffbfff223b864
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000dd0
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000046
FS:  00007f3f6e7336c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000002013c000 CR3: 0000000056d3c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_read_lock_irqsave include/linux/rwlock_api_smp.h:160 [inline]
 _raw_read_lock_irqsave+0xd9/0x120 kernel/locking/spinlock.c:236
 send_sigio+0x2f/0x360 fs/fcntl.c:776
 kill_fasync_rcu fs/fcntl.c:1001 [inline]
 kill_fasync+0x232/0x4d0 fs/fcntl.c:1015
 perf_event_wakeup+0x2ff/0x3a0 kernel/events/core.c:6560
 perf_pending_irq+0x167/0x5d0 kernel/events/core.c:6656
 irq_work_single+0xd5/0x230 kernel/irq_work.c:211
 irq_work_run_list kernel/irq_work.c:242 [inline]
 irq_work_run+0x187/0x350 kernel/irq_work.c:251
 __sysvec_irq_work+0xbb/0x360 arch/x86/kernel/irq_work.c:22
 sysvec_irq_work+0x3b/0xb0 arch/x86/kernel/irq_work.c:17
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:679
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194
Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 f2 f1 30 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> c7 37 ad f6 65 8b 05 98 2f 51 75 85 c0 74 3f 48 c7 04 24 0e 36
RSP: 0018:ffffc90000007360 EFLAGS: 00000206
RAX: 2713ea753a419000 RBX: 1ffff92000000e70 RCX: ffffffff816af0fa
RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001
RBP: ffffc900000073f0 R08: dffffc0000000000 R09: fffffbfff223b84c
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 1ffff92000000e6c R14: ffffc90000007380 R15: 0000000000000246
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 cma_netevent_callback+0x857/0x990 drivers/infiniband/core/cma.c:5194
 notifier_call_chain kernel/notifier.c:87 [inline]
 atomic_notifier_call_chain+0x17c/0x2c0 kernel/notifier.c:225
 neigh_cleanup_and_release+0xd9/0x300 net/core/neighbour.c:102
 neigh_del net/core/neighbour.c:225 [inline]
 neigh_remove_one+0x5c6/0x6d0 net/core/neighbour.c:246
 neigh_forced_gc net/core/neighbour.c:279 [inline]
 neigh_alloc net/core/neighbour.c:485 [inline]
 ___neigh_create+0x459/0x24b0 net/core/neighbour.c:648
 ip6_finish_output2+0x15ae/0x15f0 net/ipv6/ip6_output.c:129
 __ip6_finish_output net/ipv6/ip6_output.c:205 [inline]
 ip6_finish_output+0x6a0/0xa80 net/ipv6/ip6_output.c:216
 dst_output include/net/dst.h:444 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 ndisc_send_skb+0xbab/0x14e0 net/ipv6/ndisc.c:511
 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
 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653
RIP: 0010:perf_trace_buf_alloc+0x52/0x2e0 kernel/trace/trace_event_perf.c:408
Code: fc 01 20 00 00 7c 19 80 3d dc 6e f2 0c 01 0f 85 c0 01 00 00 e8 bf 8c f7 ff 31 ed e9 a2 01 00 00 49 bd 00 00 00 00 00 fc ff df <e8> 69 bb 1d 00 89 c5 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f
RSP: 0018:ffffc900045cf220 EFLAGS: 00000287
RAX: 0000000000000002 RBX: ffffc900045cf300 RCX: 0000000000040000
RDX: ffff88801b723b80 RSI: 000000000000002c RDI: 0000000000002000
RBP: ffffc900045cf370 R08: ffffffff81932266 R09: fffffbfff1d33cae
R10: 0000000000000000 R11: dffffc0000000001 R12: 000000000000002c
R13: dffffc0000000000 R14: ffffc900045cf2e0 R15: dffffc0000000000
 perf_trace_lock+0x1e4/0x440 include/trace/events/lock.h:50
 trace_lock_release include/trace/events/lock.h:69 [inline]
 lock_release+0x995/0xa20 kernel/locking/lockdep.c:5673
 page_table_check_pte_set include/linux/page_table_check.h:83 [inline]
 set_pte_at arch/x86/include/asm/pgtable.h:1009 [inline]
 copy_present_pte mm/memory.c:1000 [inline]
 copy_pte_range mm/memory.c:1091 [inline]
 copy_pmd_range mm/memory.c:1177 [inline]
 copy_pud_range mm/memory.c:1214 [inline]
 copy_p4d_range mm/memory.c:1238 [inline]
 copy_page_range+0x2d50/0x4660 mm/memory.c:1336
 dup_mmap kernel/fork.c:696 [inline]
 dup_mm kernel/fork.c:1540 [inline]
 copy_mm+0xf42/0x1990 kernel/fork.c:1589
 copy_process+0x19d5/0x4060 kernel/fork.c:2267
 kernel_clone+0x222/0x920 kernel/fork.c:2682
 __do_sys_clone kernel/fork.c:2823 [inline]
 __se_sys_clone kernel/fork.c:2807 [inline]
 __x64_sys_clone+0x231/0x280 kernel/fork.c:2807
 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: 0033:0x7f3f6d97dff9
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:00007f3f6e732fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f3f6db35f80 RCX: 00007f3f6d97dff9
RDX: 00000000200002c0 RSI: 00000000200002a0 RDI: 0000000005245000
RBP: 00007f3f6d9f0296 R08: 0000000020000340 R09: 0000000020000340
R10: 0000000020000300 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3f6db35f80 R15: 00007ffef190a0b8
 </TASK>