rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P3752 0-.... } 5708 jiffies s: 1577 root: 0x1/T rcu: blocking rcu_node structures (internal RCU debug): Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3752 Comm: syz.4.15 Not tainted 6.1.112-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:84 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:102 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:128 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:159 [inline] RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline] RIP: 0010:kasan_check_range+0x74/0x290 mm/kasan/generic.c:189 Code: 49 c1 ea 03 49 bb 01 00 00 00 00 fc ff df 4f 8d 34 1a 4c 89 f5 4c 29 cd 48 83 fd 10 7f 26 48 85 ed 0f 84 3a 01 00 00 49 f7 d2 <49> 01 da 41 80 39 00 0f 85 c4 01 00 00 49 ff c1 49 ff c2 75 ee e9 RSP: 0018:ffffc900000069b8 EFLAGS: 00000002 RAX: 0000000000000001 RBX: 1ffffffff1d33f2d RCX: ffffffff816aaa17 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e99f968 RBP: 0000000000000001 R08: dffffc0000000000 R09: fffffbfff1d33f2d R10: e00000000e2cc0d2 R11: dffffc0000000001 R12: 1ffff92000000d48 R13: ffffffff817a8978 R14: fffffbfff1d33f2e R15: dffffc0000000000 FS: 00007fcc156106c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffbe03ff9c8 CR3: 0000000074077000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:72 [inline] _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline] cpumask_test_cpu include/linux/cpumask.h:444 [inline] cpu_online include/linux/cpumask.h:1030 [inline] trace_lock_release include/trace/events/lock.h:69 [inline] lock_release+0xc7/0xa20 kernel/locking/lockdep.c:5673 seqcount_lockdep_reader_access+0x10b/0x220 include/linux/seqlock.h:101 ktime_get_update_offsets_now+0x38/0x420 kernel/time/timekeeping.c:2317 hrtimer_update_base kernel/time/hrtimer.c:632 [inline] hrtimer_interrupt+0x12f/0x980 kernel/time/hrtimer.c:1797 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:check_preemption_disabled+0x4b/0x110 lib/smp_processor_id.c:55 Code: 8b 05 71 ab 5b 75 a9 ff ff ff 7f 74 22 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 0f 85 c7 00 00 00 89 d8 48 83 c4 10 5b 41 5c <41> 5e 41 5f c3 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 RSP: 0018:ffffc90000006e58 EFLAGS: 00000286 RAX: 0000000000000000 RBX: ffffffff89610485 RCX: ffff88802d3c1dc0 RDX: ffff88802d3c1dc0 RSI: ffffffff8b5d7160 RDI: ffffffff8b5d7120 RBP: 0000000000000001 R08: ffffffff896104b5 R09: fffffbfff223ba45 R10: 0000000000000000 R11: dffffc0000000001 R12: 00000000c38d9da1 R13: ffff88805b344000 R14: ffff888073d89c40 R15: 0000000000000000 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] rcu_is_watching+0x11/0xb0 kernel/rcu/tree.c:721 rcu_read_lock include/linux/rcupdate.h:792 [inline] __ipv6_chk_addr_and_flags+0x102/0x6a0 net/ipv6/addrconf.c:1939 ipv6_chk_addr_and_flags net/ipv6/addrconf.c:1974 [inline] ipv6_chk_addr+0x36/0x50 net/ipv6/addrconf.c:1915 icmp6_send+0x311/0x2160 net/ipv6/icmp.c:479 __icmpv6_send include/linux/icmpv6.h:28 [inline] icmpv6_send include/linux/icmpv6.h:49 [inline] ip6_link_failure+0x38/0x4e0 net/ipv6/route.c:2793 dst_link_failure include/net/dst.h:423 [inline] xfrmi_xmit2 net/xfrm/xfrm_interface_core.c:512 [inline] xfrmi_xmit+0xc9d/0x18b0 net/xfrm/xfrm_interface_core.c:565 __netdev_start_xmit include/linux/netdevice.h:4853 [inline] netdev_start_xmit include/linux/netdevice.h:4867 [inline] xmit_one net/core/dev.c:3627 [inline] dev_hard_start_xmit+0x261/0x8c0 net/core/dev.c:3643 __dev_queue_xmit+0x1bb1/0x3cf0 net/core/dev.c:4293 neigh_output include/net/neighbour.h:544 [inline] ip6_finish_output2+0xee6/0x15f0 net/ipv6/ip6_output.c:138 __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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:finish_task_switch+0x1d3/0x810 kernel/sched/core.c:5120 Code: 32 0b 00 48 83 c4 08 4c 89 f7 e8 68 31 00 00 0f 1f 44 00 00 4c 89 f7 e8 9b bd 51 09 e8 26 21 32 00 fb 49 8d bc 24 f8 15 00 00 <48> 89 f8 48 c1 e8 03 49 bd 00 00 00 00 00 fc ff df 42 0f b6 04 28 RSP: 0018:ffffc90004947388 EFLAGS: 00000282 RAX: 3a19aec80e62ce00 RBX: ffff88802e1e1df4 RCX: ffffffff97334103 RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffff88802d3c33b8 RBP: ffffc900049473d0 R08: dffffc0000000000 R09: ffffed10171c7539 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88802d3c1dc0 R13: 1ffff110171c76e3 R14: ffff8880b8e3a9c0 R15: ffff8880b8e3b718 context_switch kernel/sched/core.c:5244 [inline] __schedule+0x1447/0x4570 kernel/sched/core.c:6558 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870 irqentry_exit+0x53/0x80 kernel/entry/common.c:439 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:__page_table_check_zero+0x1d8/0x4b0 mm/page_table_check.c:154 Code: 00 48 8b 2d 1a a4 56 0b 4c 01 fd 48 89 ef be 04 00 00 00 e8 5a 56 f5 ff 48 89 e8 48 c1 e8 03 0f b6 04 18 84 c0 75 6a 8b 5d 00 <31> ff 89 de e8 cf d5 9d ff 85 db 0f 85 f0 00 00 00 48 83 c5 04 48 RSP: 0018:ffffc90004947720 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81ecdcb6 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88801c893490 RBP: ffff88801c893490 R08: dffffc0000000000 R09: ffffed1003912693 R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000 R13: 1ffffffff1a86f90 R14: 0000000000000001 R15: ffff88801c893450 page_table_check_free include/linux/page_table_check.h:46 [inline] free_pages_prepare mm/page_alloc.c:1445 [inline] free_pcp_prepare mm/page_alloc.c:1494 [inline] free_unref_page_prepare+0xf73/0x1120 mm/page_alloc.c:3369 free_unref_page+0x33/0x3e0 mm/page_alloc.c:3464 free_slab mm/slub.c:2031 [inline] discard_slab mm/slub.c:2037 [inline] __unfreeze_partials+0x1b7/0x210 mm/slub.c:2586 put_cpu_partial+0x17b/0x250 mm/slub.c:2662 qlink_free mm/kasan/quarantine.c:168 [inline] qlist_free_all+0x76/0xe0 mm/kasan/quarantine.c:187 kasan_quarantine_reduce+0x156/0x170 mm/kasan/quarantine.c:294 __kasan_slab_alloc+0x1f/0x70 mm/kasan/common.c:305 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x52/0x3a0 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] slab_alloc mm/slub.c:3406 [inline] __kmem_cache_alloc_lru mm/slub.c:3413 [inline] kmem_cache_alloc+0x10c/0x2d0 mm/slub.c:3422 copy_sighand+0x50/0x230 kernel/fork.c:1654 copy_process+0x1923/0x4060 kernel/fork.c:2261 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: 0033:0x7fcc1477dff9 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:00007fcc1560ffe8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007fcc14935f80 RCX: 00007fcc1477dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000022023400 RBP: 00007fcc147f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fcc14935f80 R15: 00007ffd40225548