bridge0: received packet on bridge_slave_1 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7282/1:b..l P7511/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=23969, q=1283 ncpus=1)
task:syz.0.332 state:R running task stack:27384 pid:7511 tgid:7511 ppid:5828 task_flags:0x400040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x19e/0x320 kernel/locking/lockdep.c:5893
Code: ff 65 0f c1 05 cb cd 29 12 83 f8 01 0f 85 3d 01 00 00 9c 58 f6 c4 02 0f 85 28 01 00 00 41 f7 c6 00 02 00 00 0f 85 de 00 00 00 <48> 8b 44 24 10 65 48 2b 05 1d 86 29 12 0f 85 63 01 00 00 48 83 c4
RSP: 0000:ffffc9000465f828 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e7e7760 RCX: ffffc9000465f834
RDX: 0000000000000001 RSI: ffffffff8de5cea9 RDI: ffffffff8c1b1da0
RBP: ffffffff827cbe17 R08: 0000000000000001 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: ffff888028e5db80
R13: 0000000000000cc0 R14: 0000000000000202 R15: 0000000000000002
rcu_lock_release include/linux/rcupdate.h:322 [inline]
rcu_read_unlock+0x1c/0x60 include/linux/rcupdate.h:881
percpu_ref_get_many include/linux/percpu-refcount.h:209 [inline]
percpu_ref_get include/linux/percpu-refcount.h:222 [inline]
css_get include/linux/cgroup_refcnt.h:11 [inline]
css_get include/linux/cgroup_refcnt.h:8 [inline]
charge_memcg+0x18c/0x280 mm/memcontrol.c:4748
__mem_cgroup_charge+0x2b/0x1e0 mm/memcontrol.c:4761
mem_cgroup_charge include/linux/memcontrol.h:664 [inline]
shmem_alloc_and_add_folio+0x451/0xd40 mm/shmem.c:1982
shmem_get_folio_gfp+0x6ab/0x1900 mm/shmem.c:2567
shmem_fault+0x1f9/0xa20 mm/shmem.c:2768
__do_fault+0x10d/0x550 mm/memory.c:5364
do_read_fault mm/memory.c:5799 [inline]
do_fault+0xabb/0x18e0 mm/memory.c:5933
do_pte_missing mm/memory.c:4477 [inline]
handle_pte_fault mm/memory.c:6317 [inline]
__handle_mm_fault+0x1815/0x2b60 mm/memory.c:6455
handle_mm_fault+0x36d/0xa20 mm/memory.c:6624
do_user_addr_fault+0x5a3/0x12f0 arch/x86/mm/fault.c:1334
handle_page_fault arch/x86/mm/fault.c:1474 [inline]
exc_page_fault+0x6f/0xd0 arch/x86/mm/fault.c:1527
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x1282000
RSP: 002b:0000000000000009 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007faa41816270 RCX: 00007faa4159c819
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001
RBP: 00007faa41632c91 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa41816308 R14: 00007faa41816270 R15: 00007fffba433a28
task:syz.0.280 state:R running task stack:22536 pid:7282 tgid:7282 ppid:5828 task_flags:0x40064c flags:0x00080001
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7238
irqentry_exit+0x17b/0x670 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:debug_lockdep_rcu_enabled+0x28/0x40 kernel/rcu/update.c:320
Code: 90 90 f3 0f 1e fa 8b 05 82 7d 4b 05 85 c0 74 20 8b 05 60 b0 4b 05 85 c0 74 16 65 48 8b 05 88 80 7f 08 8b 80 54 0b 00 00 85 c0 <0f> 94 c0 0f b6 c0 e9 3d 2c 03 00 66 2e 0f 1f 84 00 00 00 00 00 0f
RSP: 0018:ffffc90004e5f198 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffea0002192a80 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8de5cea9 RDI: ffffffff8c1b1da0
RBP: ffffea0002192a80 R08: 0000000086db7919 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: ffff88801ce80000
R13: 0000000000000001 R14: ffffea0002192ab8 R15: 0000000000000000
rcu_read_lock include/linux/rcupdate.h:851 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline]
percpu_ref_put include/linux/percpu-refcount.h:351 [inline]
css_put include/linux/cgroup_refcnt.h:79 [inline]
css_put include/linux/cgroup_refcnt.h:76 [inline]
uncharge_folio+0x4fd/0x840 mm/memcontrol.c:4923
__mem_cgroup_uncharge_folios+0x11b/0x1e0 mm/memcontrol.c:4946
mem_cgroup_uncharge_folios include/linux/memcontrol.h:692 [inline]
folios_put_refs+0x52f/0x840 mm/swap.c:1001
folio_batch_release include/linux/pagevec.h:101 [inline]
shmem_undo_range+0x5e5/0x1570 mm/shmem.c:1149
shmem_truncate_range mm/shmem.c:1277 [inline]
shmem_evict_inode+0x39e/0xbd0 mm/shmem.c:1407
evict+0x3c2/0xad0 fs/inode.c:846
iput_final fs/inode.c:1966 [inline]
iput.part.0+0x605/0xf50 fs/inode.c:2015
iput+0x35/0x40 fs/inode.c:1981
dentry_unlink_inode+0x2a1/0x490 fs/dcache.c:467
__dentry_kill+0x1d0/0x600 fs/dcache.c:670
finish_dput+0x76/0x480 fs/dcache.c:879
dput.part.0+0x456/0x570 fs/dcache.c:928
dput+0x1f/0x30 fs/dcache.c:920
__fput+0x519/0xb40 fs/file_table.c:477
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x8b8/0x2b60 kernel/exit.c:976
do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop kernel/entry/common.c:98 [inline]
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
irqentry_exit_to_user_mode_prepare include/linux/irq-entry-common.h:270 [inline]
irqentry_exit_to_user_mode include/linux/irq-entry-common.h:339 [inline]
irqentry_exit+0x1f8/0x670 kernel/entry/common.c:219
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x0
RSP: 002b:000000000000000a EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007faa41815fa0 RCX: 00007faa4159c819
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000020003b46
RBP: 00007faa41632c91 R08: 0000000000000002 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007faa41816038 R14: 00007faa41815fa0 R15: 00007fffba433a28
rcu: rcu_preempt kthread starved for 468 jiffies! g23969 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:27832 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5298 [inline]
__schedule+0xfee/0x6120 kernel/sched/core.c:6911
__schedule_loop kernel/sched/core.c:6993 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:7008
schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1a9/0x900 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x179/0x230 kernel/rcu/tree.c:2297
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x754/0xd80 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: 6815 Comm: kworker/u8:18 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: bat_events batadv_tt_purge
RIP: 0010:variable_test_bit arch/x86/include/asm/bitops.h:222 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:233 [inline]
RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline]
RIP: 0010:cpumask_test_cpu include/linux/cpumask.h:649 [inline]
RIP: 0010:cpu_online include/linux/cpumask.h:1231 [inline]
RIP: 0010:trace_netif_rx_exit+0x54/0x240 include/trace/events/net.h:319
Code: cb 01 00 00 e8 8d 88 aa f8 48 89 d8 be 08 00 00 00 48 c1 e8 06 48 8d 3c c5 10 fc d9 90 e8 24 26 16 f9 48 0f a3 1d 7c 3b 7c 07 <0f> 92 c3 31 ff 89 de e8 b0 82 aa f8 84 db 0f 85 50 01 00 00 e8 53
RSP: 0018:ffffc900000069b0 EFLAGS: 00000247
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff895dc08c
RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff90d9fc10
RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff21b3f82
R10: ffffffff90d9fc17 R11: 00000000000075fb R12: 0000000000000000
R13: ffff888066578000 R14: ffff88814f631430 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888124340000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff4ba4db008 CR3: 0000000036022000 CR4: 00000000003526f0
Call Trace:
__netif_rx+0x91/0xb0 net/core/dev.c:5712
veth_forward_skb drivers/net/veth.c:325 [inline]
veth_xmit+0x8a8/0xe90 drivers/net/veth.c:379
__netdev_start_xmit include/linux/netdevice.h:5325 [inline]
netdev_start_xmit include/linux/netdevice.h:5334 [inline]
xmit_one net/core/dev.c:3888 [inline]
dev_hard_start_xmit+0x121/0x7d0 net/core/dev.c:3904
__dev_queue_xmit+0x32c1/0x4800 net/core/dev.c:4854
dev_queue_xmit include/linux/netdevice.h:3385 [inline]
br_dev_queue_push_xmit+0x360/0x550 net/bridge/br_forward.c:53
br_nf_dev_queue_xmit+0x741/0x2a20 net/bridge/br_netfilter_hooks.c:920
NF_HOOK include/linux/netfilter.h:318 [inline]
NF_HOOK include/linux/netfilter.h:312 [inline]
br_nf_post_routing+0xcbb/0x16a0 net/bridge/br_netfilter_hooks.c:966
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK include/linux/netfilter.h:316 [inline]
br_forward_finish+0x261/0x4d0 net/bridge/br_forward.c:66
br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1167
br_nf_forward_finish+0x693/0xb30 net/bridge/br_netfilter_hooks.c:662
NF_HOOK include/linux/netfilter.h:318 [inline]
NF_HOOK include/linux/netfilter.h:312 [inline]
br_nf_forward_ip.part.0+0x61e/0x820 net/bridge/br_netfilter_hooks.c:716
br_nf_forward_ip net/bridge/br_netfilter_hooks.c:676 [inline]
br_nf_forward+0xfe5/0x19f0 net/bridge/br_netfilter_hooks.c:773
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:623
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK include/linux/netfilter.h:316 [inline]
__br_forward+0x2f6/0x970 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver+0xf0/0x180 net/bridge/br_forward.c:191
br_flood+0x193/0x650 net/bridge/br_forward.c:238
br_handle_frame_finish+0xff4/0x1f60 net/bridge/br_input.c:229
br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1167
br_nf_pre_routing_finish_ipv6+0x769/0xfb0 net/bridge/br_netfilter_ipv6.c:154
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x39c/0x8b0 net/bridge/br_netfilter_ipv6.c:184
br_nf_pre_routing+0x90d/0x1550 net/bridge/br_netfilter_hooks.c:508
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0xcdd/0x1520 net/bridge/br_input.c:442
__netif_receive_skb_core.constprop.0+0x6c5/0x3550 net/core/dev.c:6068
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6179
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6294
process_backlog+0x37a/0x1580 net/core/dev.c:6645
__napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7709
napi_poll net/core/dev.c:7772 [inline]
net_rx_action+0xa40/0xf20 net/core/dev.c:7929
handle_softirqs+0x1eb/0x9e0 kernel/softirq.c:622
do_softirq kernel/softirq.c:523 [inline]
do_softirq+0xac/0xe0 kernel/softirq.c:510
__local_bh_enable_ip+0xf8/0x120 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:395 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2250 [inline]
batadv_tt_purge+0x25d/0xbd0 net/batman-adv/translation-table.c:3510
process_one_work+0xa23/0x19a0 kernel/workqueue.c:3276
process_scheduled_works kernel/workqueue.c:3359 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3440
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 11024 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
net_ratelimit: 13016 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:76:10:08:4d:8a:18, vlan:0)