bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P17646/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=87309, q=2283 ncpus=2)
task:syz.1.3666 state:R running task stack:24600 pid:17646 tgid:17646 ppid:15808 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d4/0x5630 kernel/sched/core.c:7239
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7561
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x67/0x350 kernel/locking/lockdep.c:5851
Code: 00 65 8b 05 33 21 cd 11 83 f8 08 0f 83 84 01 00 00 89 c0 48 0f a3 05 18 f3 b5 0e 73 0d e8 11 2b 09 00 84 c0 0f 84 cb 01 00 00 <83> 3d 12 24 b6 0e 00 0f 84 d3 00 00 00 48 8b b4 24 90 00 00 00 4c
RSP: 0018:ffffc900040c6fd0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8c4cd760 RDI: ffffffff8c4cd720
RBP: ffffffff8241f90c R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100f83dd8c R12: 0000000000000002
R13: ffffffff8eb5a1e0 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
__page_table_check_zero+0x89/0x430 mm/page_table_check.c:138
page_table_check_alloc include/linux/page_table_check.h:38 [inline]
post_alloc_hook+0x208/0x250 mm/page_alloc.c:1860
prep_new_page mm/page_alloc.c:1867 [inline]
get_page_from_freelist+0x21fe/0x2270 mm/page_alloc.c:3946
__alloc_frozen_pages_noprof+0x18d/0x380 mm/page_alloc.c:5304
__alloc_pages_noprof+0x10/0x100 mm/page_alloc.c:5338
alloc_pages_bulk_noprof+0x5f7/0x7c0 mm/page_alloc.c:5230
___alloc_pages_bulk mm/kasan/shadow.c:345 [inline]
__kasan_populate_vmalloc_do mm/kasan/shadow.c:370 [inline]
__kasan_populate_vmalloc+0xb7/0x1c0 mm/kasan/shadow.c:424
kasan_populate_vmalloc include/linux/kasan.h:580 [inline]
alloc_vmap_area+0xd1a/0x1420 mm/vmalloc.c:2145
__get_vm_area_node+0x200/0x2f0 mm/vmalloc.c:3248
__vmalloc_node_range_noprof+0x358/0x1730 mm/vmalloc.c:4064
__vmalloc_node_noprof+0xc2/0x100 mm/vmalloc.c:4165
alloc_thread_stack_node kernel/fork.c:359 [inline]
dup_task_struct+0x2c1/0xa20 kernel/fork.c:930
copy_process+0x820/0x43e0 kernel/fork.c:2139
kernel_clone+0x2d7/0x940 kernel/fork.c:2772
__do_sys_clone3 kernel/fork.c:3075 [inline]
__se_sys_clone3+0x33c/0x360 kernel/fork.c:3054
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd9a0b9eec9
RSP: 002b:00007fffe0dabe88 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 00007fd9a0b5a460 RCX: 00007fd9a0b9eec9
RDX: 00007fd9a0b5a460 RSI: 0000000000000058 RDI: 00007fffe0dabee0
RBP: 00007fd9a1aa46c0 R08: 00007fd9a1aa46c0 R09: 00007fffe0dabfc7
R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffe8
R13: 000000000000006e R14: 00007fffe0dabee0 R15: 00007fffe0dabfc8
rcu: rcu_preempt kthread starved for 843 jiffies! g87309 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:R running task stack:27496 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d4/0x5630 kernel/sched/core.c:7239
__schedule_loop kernel/sched/core.c:7316 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7331
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 3223 Comm: kworker/R-bat_e Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:check_preemption_disabled+0x1e/0xd0 lib/smp_processor_id.c:53
Code: 90 90 90 90 90 90 90 90 90 90 90 90 55 41 57 41 56 53 65 8b 05 4b 2e 97 07 65 48 8b 0d 1b 2e 97 07 85 c9 74 0c 5b 41 5e 41 5f <5d> c3 cc cc cc cc cc 9c 59 f7 c1 00 02 00 00 74 ea 65 4c 8b 3d f1
RSP: 0018:ffffc90000006e40 EFLAGS: 00000202
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 8000000000000102
RDX: 8000000000000100 RSI: ffffffff8c4cd760 RDI: ffffffff8c4cd720
RBP: ffffc90000006f90 R08: 0000000000000100 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb5a1e0 R12: 1ffff92000000dd8
R13: ffff8880237f3cd0 R14: 0000000000000004 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888124f24000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f59fba15ee6 CR3: 000000000e946000 CR4: 00000000003526f0
Call Trace:
rcu_lockdep_current_cpu_online+0x39/0x120 kernel/rcu/tree.c:4069
rcu_read_lock_held_common kernel/rcu/update.c:113 [inline]
rcu_read_lock_held+0x1e/0x50 kernel/rcu/update.c:349
nf_hook include/linux/netfilter.h:266 [inline]
NF_HOOK+0x190/0x3f0 include/linux/netfilter.h:323
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:66
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_forward_finish+0xa76/0xea0 net/bridge/br_netfilter_hooks.c:667
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_forward_ip+0x7eb/0xa30 net/bridge/br_netfilter_hooks.c:721
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
__br_forward+0x397/0x540 net/bridge/br_forward.c:115
br_handle_frame_finish+0x1119/0x1950 net/bridge/br_input.c:229
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:325 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x127f/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6151
__netif_receive_skb_one_core net/core/dev.c:6262 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6728
__napi_poll+0xaa/0x330 net/core/dev.c:7787
napi_poll net/core/dev.c:7850 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8007
handle_softirqs+0x226/0x860 kernel/softirq.c:645
do_softirq+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2390 [inline]
batadv_tt_purge+0x4ae/0xa10 net/batman-adv/translation-table.c:3754
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa88/0x14c0 kernel/workqueue.c:3405
rescuer_thread+0x7b6/0x10b0 kernel/workqueue.c:3629
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 11901 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:66:25:5b:38:b3:c5, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:66:25:5b:38:b3:c5, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)