rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5778/1:b..l
rcu: 	(detected by 0, t=10503 jiffies, g=73681, q=202 ncpus=2)
task:syz-executor    state:R  running task     stack:18664 pid:5778  ppid:5770   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011
 irqentry_exit+0x67/0x70 kernel/entry/common.c:441
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:arch_stack_walk+0x138/0x190 arch/x86/kernel/stacktrace.c:27
Code: 4c 8d bd 78 ff ff ff 4c 89 ff e8 73 8f 08 00 49 89 c4 31 ff 48 89 c6 e8 26 72 54 00 4d 85 e4 74 2c 48 89 df 4c 89 e6 41 ff d6 <84> c0 74 26 4c 89 ff e8 ec 90 08 00 83 bd 78 ff ff ff 00 74 1c e8
RSP: 0018:ffffc900046ef2e8 EFLAGS: 00000292
RAX: 0000000000000001 RBX: ffffc900046ef3a0 RCX: ffff888031b81e00
RDX: dffffc0000000000 RSI: ffffffff81e04cd2 RDI: ffffc900046ef3a0
RBP: ffffc900046ef370 R08: ffffc900046ef3b0 R09: 0000000000000005
R10: 0000000000000004 R11: 0000000000000000 R12: ffffffff81e04cd2
R13: 1ffff1100637046f R14: ffffffff81762b60 R15: ffffc900046ef2e8
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 save_stack+0x125/0x230 mm/page_owner.c:128
 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1182 [inline]
 free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366
 free_unref_page+0x32/0x2e0 mm/page_alloc.c:2459
 __slab_free+0x35a/0x400 mm/slub.c:3736
 qlink_free mm/kasan/quarantine.c:166 [inline]
 qlist_free_all+0x75/0xd0 mm/kasan/quarantine.c:185
 kasan_quarantine_reduce+0x143/0x160 mm/kasan/quarantine.c:292
 __kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:306
 kasan_slab_alloc include/linux/kasan.h:188 [inline]
 slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770
 slab_alloc_node mm/slub.c:3495 [inline]
 slab_alloc mm/slub.c:3503 [inline]
 __kmem_cache_alloc_lru mm/slub.c:3510 [inline]
 kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519
 vma_lock_alloc kernel/fork.c:461 [inline]
 vm_area_dup+0x61/0x270 kernel/fork.c:514
 dup_mmap kernel/fork.c:712 [inline]
 dup_mm kernel/fork.c:1700 [inline]
 copy_mm+0x11a6/0x1e30 kernel/fork.c:1749
 copy_process+0x16c9/0x3da0 kernel/fork.c:2510
 kernel_clone+0x24b/0x8a0 kernel/fork.c:2919
 __do_sys_clone kernel/fork.c:3062 [inline]
 __se_sys_clone kernel/fork.c:3046 [inline]
 __x64_sys_clone+0x1b7/0x230 kernel/fork.c:3046
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f544efc6c52
RSP: 002b:00007ffc16074920 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffc16074920 RCX: 00007f544efc6c52
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffc16074aac R08: 0000000000000000 R09: 0000000000000001
R10: 000055555ebe27d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 000000000008bf8c R15: 00007ffc16074b00
 </TASK>
rcu: rcu_preempt kthread starved for 278 jiffies! g73681 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R  running task     stack:26504 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x15ae/0x4660 kernel/sched/core.c:6701
 schedule+0xbd/0x170 kernel/sched/core.c:6775
 schedule_timeout+0x188/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x30d/0x1590 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9d/0x3b0 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 14047 Comm: syz.3.2238 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:27 [inline]
RIP: 0010:static_key_false include/linux/jump_label.h:207 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:147 [inline]
RIP: 0010:wrmsr arch/x86/include/asm/msr.h:254 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:196
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 c3 89 f6 31 d2 e9 cb 31 2e 03 66 2e 0f 1f 84 00 00 00 00 00
RSP: 0018:ffffc900001f0128 EFLAGS: 00000046
RAX: 000000000000021c RBX: ffff8880b8d282c0 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 000000000000021c RDI: 0000000000000838
RBP: 0000000000000000 R08: ffffffff8f6c5aef R09: 1ffffffff1ed8b5d
R10: dffffc0000000000 R11: fffffbfff1ed8b5e R12: dffffc0000000000
R13: 00000000100035af R14: 000000000000021c R15: 0000000000000020
FS:  00007ff7050c56c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb4de289dc3 CR3: 00000000602f5000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 apic_write arch/x86/include/asm/apic.h:404 [inline]
 lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:448
 clockevents_program_event+0x1c0/0x310 kernel/time/clockevents.c:334
 hrtimer_interrupt+0x565/0x980 kernel/time/hrtimer.c:1893
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1077 [inline]
 __sysvec_apic_timer_interrupt+0xfb/0x3b0 arch/x86/kernel/apic/apic.c:1094
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0x51/0xc0 arch/x86/kernel/apic/apic.c:1088
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:lock_release+0x594/0x8c0 kernel/locking/lockdep.c:5814
Code: 00 00 00 f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 2f 04 f8 75 70 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 43 c7 44 2f 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001f0360 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 3d352eea67da5f0d RCX: a76096075235bc00
RDX: 0000000000000004 RSI: ffffffff8acae160 RDI: ffffffff8b1d5160
RBP: ffffc900001f0470 R08: ffffffff8f6c5aef R09: 1ffffffff1ed8b5d
R10: dffffc0000000000 R11: fffffbfff1ed8b5e R12: ffff88802c7c6588
R13: dffffc0000000000 R14: ffff88802c7c64d8 R15: 1ffff9200003e078
 rcu_lock_release include/linux/rcupdate.h:344 [inline]
 rcu_read_unlock include/linux/rcupdate.h:819 [inline]
 rhashtable_lookup_fast+0x83b/0x930 include/linux/rhashtable.h:673
 ila_lookup_wildcards net/ipv6/ila/ila_xlat.c:132 [inline]
 ila_xlat_addr net/ipv6/ila/ila_xlat.c:663 [inline]
 ila_nf_input+0x1fc/0x3b0 net/ipv6/ila/ila_xlat.c:190
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_slow+0xbd/0x200 net/netfilter/core.c:626
 nf_hook include/linux/netfilter.h:259 [inline]
 NF_HOOK include/linux/netfilter.h:302 [inline]
 br_nf_pre_routing_ipv6+0x55b/0x6a0 net/bridge/br_netfilter_ipv6.c:184
 nf_hook_entry_hookfn include/linux/netfilter.h:144 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:277 [inline]
 br_handle_frame+0x1240/0x14d0 net/bridge/br_input.c:424
 __netif_receive_skb_core+0xf94/0x3ac0 net/core/dev.c:5564
 __netif_receive_skb_one_core net/core/dev.c:5668 [inline]
 __netif_receive_skb+0x74/0x290 net/core/dev.c:5784
 process_backlog+0x380/0x710 net/core/dev.c:6112
 __napi_poll+0xbb/0x460 net/core/dev.c:6674
 napi_poll net/core/dev.c:6741 [inline]
 net_rx_action+0x65f/0xcc0 net/core/dev.c:6877
 handle_softirqs+0x27d/0x820 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661
 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline]
 sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xc0/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> ab 35 c0 f6 65 8b 05 1c f3 66 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc9000e84f7a0 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000246 RCX: a76096075235bc00
RDX: dffffc0000000000 RSI: ffffffff8acacfe0 RDI: 0000000000000001
RBP: ffffc9000e84f830 R08: ffffffff8f6c5aef R09: 1ffffffff1ed8b5d
R10: dffffc0000000000 R11: fffffbfff1ed8b5e R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8df37340 R15: 1ffff92001d09ef4
 rcu_preempt_deferred_qs_irqrestore+0x83b/0xc30 kernel/rcu/tree_plugin.h:-1
 rcu_read_unlock_special+0x3ca/0x4d0 kernel/rcu/tree_plugin.h:762
 __rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:818 [inline]
 sched_mm_cid_remote_clear_old kernel/sched/core.c:11941 [inline]
 task_mm_cid_work+0x217/0x770 kernel/sched/core.c:11998
 task_work_run+0x1d4/0x260 kernel/task_work.c:245
 get_signal+0x11da/0x1390 kernel/signal.c:2691
 arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:213
 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline]
 syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:305
 do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7ff70419e1d9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff7050c50e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007ff704425fa8 RCX: 00007ff70419e1d9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007ff704425fa8
RBP: 00007ff704425fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff704426038 R14: 00007ffec0205370 R15: 00007ffec0205458
 </TASK>
net_ratelimit: 6008 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
net_ratelimit: 10742 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ca:93:72:a3:f3:59, vlan:0)