bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=29bc/1/0x4000000000000000 softirq=74146/74146 fqs=0
rcu: 	(detected by 1, t=10502 jiffies, g=65417, q=219 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 15673 Comm: syz.5.2007 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:__lock_acquire+0x824/0xd20 kernel/locking/lockdep.c:-1
Code: 89 e0 25 ff 1f 00 00 41 c1 ec 03 41 81 e4 00 60 00 00 41 09 c4 4c 89 f9 48 c1 e9 20 89 ca c1 c2 04 41 29 cc 44 31 e2 44 01 f9 <41> 29 d7 89 d6 c1 c6 06 44 31 fe 01 ca 89 f0 c1 c0 08 29 f1 31 c8
RSP: 0018:ffffc90000007ab0 EFLAGS: 00000096
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00000000e8468705
RDX: 0000000064e32c31 RSI: ffff88801ef6aa10 RDI: ffff88801ef69e40
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff84d5225b
R10: ffffc90000007ca0 R11: fffff52000000f96 R12: 000000004d67b65a
R13: ffff88801ef6a970 R14: ffff88801ef6aa10 R15: b29849a635ae3d5f
FS:  00007fcd020da6c0(0000) GS:ffff8881259e7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd013a7190 CR3: 0000000033740000 CR4: 00000000003526f0
DR0: 0000000000000006 DR1: 0000000000000000 DR2: 0000000000000080
DR3: 000000000f000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5868
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xa7/0xf0 kernel/locking/spinlock.c:162
 debug_object_activate+0xbb/0x420 lib/debugobjects.c:818
 debug_hrtimer_activate kernel/time/hrtimer.c:438 [inline]
 debug_activate kernel/time/hrtimer.c:477 [inline]
 enqueue_hrtimer+0x30/0x3a0 kernel/time/hrtimer.c:1081
 __run_hrtimer kernel/time/hrtimer.c:1794 [inline]
 __hrtimer_run_queues+0x656/0xc60 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0x45/0x2390 arch/x86/kernel/unwind_orc.c:470
Code: 00 00 00 00 fc ff df 48 8d 5f 48 48 89 d8 48 c1 e8 03 48 89 44 24 30 80 3c 28 00 74 08 48 89 df e8 90 b8 b0 00 48 89 5c 24 18 <49> 8b 5e 48 4d 8d 6e 38 4c 89 e8 48 c1 e8 03 48 89 44 24 58 80 3c
RSP: 0018:ffffc90015946a18 EFLAGS: 00000246
RAX: 1ffff92002b28d66 RBX: ffffc90015946b30 RCX: 14c250fb00840600
RDX: dffffc0000000000 RSI: ffffffff81ac511c RDI: ffffc90015946ae8
RBP: dffffc0000000000 R08: ffffc90015946bb0 R09: 0000000000000000
R10: ffffc90015946b38 R11: ffffffff81ac5170 R12: ffff88801ef69e40
R13: 1ffff92002b28d88 R14: ffffc90015946ae8 R15: ffffc90015946ae8
 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
 save_stack+0xf5/0x1f0 mm/page_owner.c:156
 __set_page_owner+0x8d/0x4a0 mm/page_owner.c:329
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x240/0x2a0 mm/page_alloc.c:1850
 prep_new_page mm/page_alloc.c:1858 [inline]
 get_page_from_freelist+0x21e4/0x22c0 mm/page_alloc.c:3869
 __alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:5159
 alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2416
 alloc_frozen_pages_noprof mm/mempolicy.c:2487 [inline]
 alloc_pages_noprof+0xa9/0x190 mm/mempolicy.c:2507
 pagetable_alloc_noprof include/linux/mm.h:2990 [inline]
 __pte_alloc_one_noprof include/asm-generic/pgalloc.h:75 [inline]
 pte_alloc_one+0x23/0x310 arch/x86/mm/pgtable.c:18
 __pte_alloc+0x25/0x1a0 mm/memory.c:452
 copy_pte_range mm/memory.c:1235 [inline]
 copy_pmd_range+0x7805/0x7f00 mm/memory.c:1389
 copy_pud_range mm/memory.c:1426 [inline]
 copy_p4d_range mm/memory.c:1450 [inline]
 copy_page_range+0xc14/0x1270 mm/memory.c:1538
 dup_mmap+0xf4c/0x1b10 mm/mmap.c:1834
 dup_mm kernel/fork.c:1504 [inline]
 copy_mm+0x13c/0x4b0 kernel/fork.c:1556
 copy_process+0x1706/0x3c00 kernel/fork.c:2196
 kernel_clone+0x21e/0x840 kernel/fork.c:2624
 __do_sys_clone3 kernel/fork.c:2926 [inline]
 __se_sys_clone3+0x256/0x2d0 kernel/fork.c:2905
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcd0118ec29
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:00007fcd020d9f08 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 0000000000000058 RCX: 00007fcd0118ec29
RDX: 00007fcd020d9f20 RSI: 0000000000000058 RDI: 00007fcd020d9f20
RBP: 00007fcd01211e41 R08: 0000000000000000 R09: 0000000000000058
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fcd013d6038 R14: 00007fcd013d5fa0 R15: 00007ffd759618a8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g65417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=76669
rcu: rcu_preempt kthread starved for 10502 jiffies! g65417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=0
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:I stack:27224 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5360 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6964
 __schedule_loop kernel/sched/core.c:7046 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7061
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
net_ratelimit: 6269 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
net_ratelimit: 7793 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:62:50:5f:ac:06:82, vlan:0)