rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2746 jiffies s: 1409 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: 3734 Comm: syz.2.8 Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:kasan_check_range+0x1ac/0x290 mm/kasan/generic.c:189 Code: 4c 89 d5 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 39 00 0f 85 a2 00 00 00 49 ff c1 48 ff cd 75 ee 5b <41> 5e 41 5f 5d c3 45 84 f6 75 61 41 f7 c6 00 ff 00 00 75 5d 41 f7 RSP: 0018:ffffc900001dfea0 EFLAGS: 00000056 RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff816be714 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff9754fea0 RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff2ea9fd5 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff9200003bfe4 R14: fffffbfff2ea9fd5 R15: ffffffff9754fea0 FS: 00007fecb30516c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fecb302ff98 CR3: 000000001bedb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:72 [inline] atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline] queued_spin_is_locked include/asm-generic/qspinlock.h:57 [inline] debug_spin_unlock kernel/locking/spinlock_debug.c:100 [inline] do_raw_spin_unlock+0x54/0x8a0 kernel/locking/spinlock_debug.c:140 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock_irqrestore+0x7d/0x130 kernel/locking/spinlock.c:194 debug_hrtimer_deactivate kernel/time/hrtimer.c:426 [inline] debug_deactivate+0x1d/0x280 kernel/time/hrtimer.c:482 __run_hrtimer kernel/time/hrtimer.c:1657 [inline] __hrtimer_run_queues+0x334/0xe50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x3e/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:unwind_get_return_address+0x2/0x80 arch/x86/kernel/unwind_orc.c:319 Code: c1 0f 8c fb fe ff ff 48 89 df 89 74 24 14 e8 95 7e a5 00 48 8d 7c 24 40 8b 74 24 14 e9 e1 fe ff ff e8 f2 f7 69 09 66 90 41 57 <41> 56 53 48 89 fb 49 be 00 00 00 00 00 fc ff df 48 89 f8 48 c1 e8 RSP: 0018:ffffc900001e0330 EFLAGS: 00000202 RAX: 0000000000000101 RBX: ffffc900001e0340 RCX: 0000000000000101 RDX: dffffc0000000000 RSI: ffffc900001d9000 RDI: ffffc900001e0340 RBP: ffffc900001e03d0 R08: ffffc900001e0730 R09: ffffc900001e0390 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807d219dc0 R13: ffffffff81786c50 R14: ffffc900001e0420 R15: 0000000000000000 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 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 kfree_skb include/linux/skbuff.h:1220 [inline] ip6_mc_input+0x9bf/0xbd0 net/ipv6/ip6_input.c:589 NF_HOOK+0x39d/0x450 include/linux/netfilter.h:302 __netif_receive_skb_one_core net/core/dev.c:5528 [inline] __netif_receive_skb+0x1c6/0x530 net/core/dev.c:5642 process_backlog+0x381/0x760 net/core/dev.c:5970 __napi_poll+0xc7/0x470 net/core/dev.c:6537 napi_poll net/core/dev.c:6604 [inline] net_rx_action+0x70f/0xeb0 net/core/dev.c:6718 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:in_lock_functions+0x0/0x20 kernel/locking/spinlock.c:412 Code: c1 a0 d7 21 93 80 e1 07 80 c1 03 38 c1 0f 8c 77 ff ff ff 48 c7 c7 a0 d7 21 93 e8 4b 61 76 00 e9 66 ff ff ff cc cc cc cc cc cc <48> c7 c0 f8 0a b1 8a 48 39 c7 0f 93 c0 48 c7 c1 91 3d b1 8a 48 39 RSP: 0018:ffffc900040afa98 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff97334103 RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffffffff815f1469 RBP: ffffc900040afbe0 R08: dffffc0000000000 R09: fffff52000142572 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000815f60 R13: 0000000000000003 R14: ffffffff815f1469 R15: dffffc0000000000 get_lock_parent_ip include/linux/ftrace.h:950 [inline] preempt_latency_start kernel/sched/core.c:5688 [inline] preempt_count_add+0x8f/0x180 kernel/sched/core.c:5713 try_to_wake_up+0x89/0x12e0 kernel/sched/core.c:4080 wake_up_process kernel/sched/core.c:4358 [inline] wake_up_q+0x8b/0xd0 kernel/sched/core.c:1006 futex_wake+0x4ea/0x590 kernel/futex/waitwake.c:184 do_futex+0x375/0x490 kernel/futex/syscalls.c:111 __do_sys_futex kernel/futex/syscalls.c:183 [inline] __se_sys_futex+0x3d7/0x460 kernel/futex/syscalls.c:164 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: 0033:0x7fecb217dff9 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:00007fecb30510e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007fecb2335f88 RCX: 00007fecb217dff9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fecb2335f8c RBP: 00007fecb2335f80 R08: 0000000000000010 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fecb2335f8c R13: 0000000000000000 R14: 00007ffd3db5ba80 R15: 00007ffd3db5bb68