rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 4680 jiffies s: 6297 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: 4182 Comm: syz.0.89 Not tainted 6.1.110-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline] RIP: 0010:lock_release+0x97b/0xa20 kernel/locking/lockdep.c:5673 Code: e8 7a 7e 77 00 48 8b 1d 7b 20 1b 0d 48 85 db 74 33 48 83 c3 08 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 4b 7e 77 00 48 8b 3b 48 8b 74 24 18 4c 89 f2 e8 RSP: 0018:ffffc90000006ec0 EFLAGS: 00000046 RAX: 1ffff110032ee653 RBX: ffff888019773298 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e99e4a8 RBP: ffffc90000006ff0 R08: dffffc0000000000 R09: fffffbfff1d33c96 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000000de4 R13: ffffffff817a2a5f R14: ffffffff817a2a5f R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f132ca00210 CR3: 000000005b881000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: seqcount_lockdep_reader_access+0x10b/0x220 include/linux/seqlock.h:101 timekeeping_get_delta kernel/time/timekeeping.c:254 [inline] timekeeping_get_ns kernel/time/timekeeping.c:388 [inline] ktime_get+0x7f/0x270 kernel/time/timekeeping.c:848 clockevents_program_event+0xe1/0x310 kernel/time/clockevents.c:326 hrtimer_interrupt+0x546/0x980 kernel/time/hrtimer.c:1828 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:orc_find arch/x86/kernel/unwind_orc.c:168 [inline] RIP: 0010:unwind_next_frame+0x1ed/0x2220 arch/x86/kernel/unwind_orc.c:448 Code: 9c 0b 00 44 0f 45 f9 41 8d 47 ff 44 39 f0 0f 86 26 19 00 00 44 89 f0 48 8d 1c 85 f8 b8 af 8f 48 89 d8 48 c1 e8 03 0f b6 04 38 <84> c0 0f 85 d0 1a 00 00 44 8b 23 44 89 f0 ff c0 48 8d 1c 85 f8 b8 RSP: 0018:ffffc90000007340 EFLAGS: 00000a07 RAX: 0000000000000000 RBX: ffffffff8fb0ffd4 RCX: 000000000009e078 RDX: dffffc0000000000 RSI: ffffffff8151b735 RDI: dffffc0000000000 RBP: 1ffff92000000e8a R08: 0000000000000014 R09: ffffc90000007510 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff8880509f8000 R13: ffffffff8151b734 R14: 00000000000051b7 R15: 000000000009e078 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 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_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc include/linux/slab.h:557 [inline] dst_cow_metrics_generic+0x52/0x1b0 net/core/dst.c:195 dst_metrics_write_ptr include/net/dst.h:119 [inline] dst_metric_set include/net/dst.h:180 [inline] icmp6_dst_alloc+0x2bf/0x470 net/ipv6/route.c:3282 ndisc_send_skb+0x344/0x14e0 net/ipv6/ndisc.c:491 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:hlist_empty include/linux/list.h:876 [inline] RIP: 0010:perf_trace_lock+0x1a9/0x440 include/trace/events/lock.h:50 Code: 48 89 df e8 19 97 78 00 48 83 3b 00 48 8d 9c 24 80 00 00 00 75 2b 49 89 dc 48 8b 5c 24 18 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 ed 96 78 00 48 83 3b 00 4c 89 e3 0f 84 c3 01 00 RSP: 0018:ffffc900036370a0 EFLAGS: 00000246 RAX: 1ffffd1ffff881ef RBX: ffffe8ffffc40f78 RCX: 000000008b09aa00 RDX: ffffffff81cc7180 RSI: ffffffff8b5d6da0 RDI: ffffffff8b5d6d60 RBP: ffffc900036371b0 R08: dffffc0000000000 R09: fffffbfff1d33c96 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc90003637120 R13: ffffe8ffffc40f78 R14: ffffffff8d1f74e0 R15: dffffc0000000000 trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0x995/0xa20 kernel/locking/lockdep.c:5673 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline] _raw_spin_unlock+0x12/0x40 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] zap_pte_range mm/memory.c:1515 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0x2190/0x2740 mm/memory.c:1645 unmap_vmas+0x48b/0x640 mm/memory.c:1730 exit_mmap+0x252/0x9f0 mm/mmap.c:3227 __mmput+0x115/0x3c0 kernel/fork.c:1199 exit_mm+0x226/0x300 kernel/exit.c:565 do_exit+0x9f6/0x26a0 kernel/exit.c:858 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 get_signal+0x16f7/0x17d0 kernel/signal.c:2870 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f874e17def9 Code: Unable to access opcode bytes at 0x7f874e17decf. RSP: 002b:00007f874efb7fe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: fffffffffffffff4 RBX: 00007f874e335f80 RCX: 00007f874e17def9 RDX: 0000000000000000 RSI: fffffffffffffda0 RDI: 0000000000801000 RBP: 00007f874e1f0b76 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f874e335f80 R15: 00007ffde36d8028