bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P30700/1:b..l P18051/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=174925, q=573 ncpus=1)
task:syz-executor    state:R  running task     stack:24072 pid:18051 tgid:18051 ppid:1      task_flags:0x400140 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x116f/0x5de0 kernel/sched/core.c:6767
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__orc_find+0x3b/0xf0 arch/x86/kernel/unwind_orc.c:86
Code: fc 55 53 48 83 ec 08 85 d2 0f 84 99 00 00 00 49 89 fe 48 89 f0 49 39 fc 72 7b 48 b9 00 00 00 00 00 fc ff df 49 89 ff 48 89 fd <eb> 0c 48 8d 6b 04 49 89 df 49 39 ec 72 4e 4c 89 e2 48 29 ea 48 89
RSP: 0018:ffffc90003f475d0 EFLAGS: 00000206
RAX: ffffffff9128307e RBX: 0000000000000001 RCX: dffffc0000000000
RDX: 000000000000000a RSI: ffffffff9128307e RDI: ffffffff90a04bb4
RBP: ffffffff90a04bb4 R08: ffffffff912830ba R09: 0000000000000000
R10: 0000000000000004 R11: 00000000000128fe R12: ffffffff90a04bd8
R13: ffffffff8228fe6f R14: ffffffff90a04bb4 R15: ffffffff90a04bb4
 orc_find arch/x86/kernel/unwind_orc.c:227 [inline]
 unwind_next_frame+0x2ec/0x20a0 arch/x86/kernel/unwind_orc.c:494
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x160/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1258 [inline]
 __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2721
 discard_slab mm/slub.c:2716 [inline]
 __put_partials+0x16d/0x1c0 mm/slub.c:3185
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:385
 kasan_kmalloc include/linux/kasan.h:260 [inline]
 __do_kmalloc_node mm/slub.c:4327 [inline]
 __kmalloc_noprof+0x223/0x510 mm/slub.c:4339
 kmalloc_noprof include/linux/slab.h:909 [inline]
 tomoyo_realpath_from_path+0xc2/0x6e0 security/tomoyo/realpath.c:251
 tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
 tomoyo_path_perm+0x274/0x460 security/tomoyo/file.c:822
 tomoyo_path_unlink+0x91/0xe0 security/tomoyo/tomoyo.c:162
 security_path_unlink+0x145/0x2b0 security/security.c:1965
 do_unlinkat+0x463/0x6a0 fs/namei.c:4640
 __do_sys_unlink fs/namei.c:4689 [inline]
 __se_sys_unlink fs/namei.c:4687 [inline]
 __x64_sys_unlink+0xc5/0x110 fs/namei.c:4687
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d47d8df17
RSP: 002b:00007ffc7b59d198 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4d47d8df17
RDX: 00007ffc7b59d1c0 RSI: 00007ffc7b59d250 RDI: 00007ffc7b59d250
RBP: 00007ffc7b59d250 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffc7b59e2e0
R13: 00007f4d47e1089d R14: 00000000001cfa33 R15: 00007ffc7b59e320
 </TASK>
task:modprobe        state:R  running task     stack:25672 pid:30700 tgid:30700 ppid:8574   task_flags:0x400000 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x116f/0x5de0 kernel/sched/core.c:6767
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5870
Code: e0 0b 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 12 9c ed 0e 0f 82 74 02 00 00 8b 35 8a cb ed 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 e9 df 0b 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc9000b13ef48 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3bfa80 RCX: 000000004a4b96a3
RDX: 0000000000000000 RSI: ffffffff8dbb90b0 RDI: ffffffff8bf48c60
RBP: 0000000000000002 R08: b4cceaee8c49bd7a R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x160/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1258 [inline]
 __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2721
 discard_slab mm/slub.c:2716 [inline]
 __put_partials+0x16d/0x1c0 mm/slub.c:3185
 qlink_free mm/kasan/quarantine.c:163 [inline]
 qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179
 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286
 __kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4147 [inline]
 kmem_cache_alloc_bulk_noprof+0x41a/0xbd0 mm/slub.c:5371
 mt_alloc_bulk lib/maple_tree.c:181 [inline]
 mas_alloc_nodes+0x2f1/0x8b0 lib/maple_tree.c:1271
 mas_node_count_gfp+0x105/0x130 lib/maple_tree.c:1331
 mas_preallocate+0x53e/0xcd0 lib/maple_tree.c:5501
 vma_iter_prealloc mm/vma.h:409 [inline]
 __split_vma+0x33b/0x1030 mm/vma.c:490
 vms_gather_munmap_vmas+0x392/0x1310 mm/vma.c:1336
 __mmap_prepare mm/vma.c:2303 [inline]
 __mmap_region+0x314/0x27c0 mm/vma.c:2506
 mmap_region+0x1ab/0x3f0 mm/vma.c:2597
 do_mmap+0xd8e/0x11b0 mm/mmap.c:561
 vm_mmap_pgoff+0x281/0x450 mm/util.c:579
 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:607
 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline]
 __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline]
 __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4feabe0242
RSP: 002b:00007ffef29d4f68 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f4fea8f6000 RCX: 00007f4feabe0242
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007f4fea8f6000
RBP: 0000000000000812 R08: 0000000000000000 R09: 000000000000d000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffef29d5028
R13: 00007f4feabb5580 R14: 00007ffef29d53e0 R15: 00000fffde53a9f0
 </TASK>
rcu: rcu_preempt kthread starved for 3922 jiffies! g174925 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:26952 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x116f/0x5de0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6860
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2248
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 21344 Comm: kworker/u8:2 Tainted: G     U    I         6.15.0-rc6-syzkaller-00346-g5723cc3450bc #0 PREEMPT(full) 
Tainted: [U]=USER, [I]=FIRMWARE_WORKAROUND
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: wg-kex-wg0 wg_packet_handshake_send_worker
RIP: 0010:lock_release+0x183/0x2f0 kernel/locking/lockdep.c:5891
Code: 0f c1 05 28 23 0c 12 83 f8 01 0f 85 1d 01 00 00 9c 58 f6 c4 02 0f 85 08 01 00 00 41 f7 c5 00 02 00 00 74 01 fb 48 8b 44 24 10 <65> 48 2b 05 7d e5 0b 12 0f 85 58 01 00 00 48 83 c4 18 5b 41 5c 41
RSP: 0018:ffffc90000006c30 EFLAGS: 00000206
RAX: e6179e1e67ce6700 RBX: ffffffff8e3bfa80 RCX: ffffc90000006c3c
RDX: 0000000000000006 RSI: ffffffff8dbb90b0 RDI: ffffffff8bf48c60
RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000006 R11: 00000000000947d8 R12: ffffffff81699d54
R13: 0000000000000206 R14: ffff88802df61e00 R15: 0000000000000007
FS:  0000000000000000(0000) GS:ffff8881249e7000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fefc6c00218 CR3: 000000000e180000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 rcu_lock_release include/linux/rcupdate.h:341 [inline]
 rcu_read_unlock include/linux/rcupdate.h:871 [inline]
 class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0x3f9/0x20a0 arch/x86/kernel/unwind_orc.c:479
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 unpoison_slab_object mm/kasan/common.c:319 [inline]
 __kasan_slab_alloc+0x89/0x90 mm/kasan/common.c:345
 kasan_slab_alloc include/linux/kasan.h:250 [inline]
 slab_post_alloc_hook mm/slub.c:4147 [inline]
 slab_alloc_node mm/slub.c:4196 [inline]
 kmem_cache_alloc_noprof+0x1cb/0x3b0 mm/slub.c:4203
 skb_ext_maybe_cow net/core/skbuff.c:6969 [inline]
 skb_ext_add+0xf8/0x7a0 net/core/skbuff.c:7043
 nf_bridge_unshare net/bridge/br_netfilter_hooks.c:169 [inline]
 br_nf_forward_ip.part.0+0x28/0x810 net/bridge/br_netfilter_hooks.c:684
 br_nf_forward_ip net/bridge/br_netfilter_hooks.c:679 [inline]
 br_nf_forward+0xf0f/0x1be0 net/bridge/br_netfilter_hooks.c:776
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_slow+0xbe/0x200 net/netfilter/core.c:626
 nf_hook+0x45e/0x780 include/linux/netfilter.h:269
 NF_HOOK include/linux/netfilter.h:312 [inline]
 __br_forward+0x1be/0x5b0 net/bridge/br_forward.c:115
 deliver_clone net/bridge/br_forward.c:131 [inline]
 maybe_deliver+0xf1/0x180 net/bridge/br_forward.c:190
 br_flood+0x17c/0x650 net/bridge/br_forward.c:237
 br_handle_frame_finish+0xe8e/0x1c20 net/bridge/br_input.c:220
 br_nf_hook_thresh+0x304/0x410 net/bridge/br_netfilter_hooks.c:1170
 br_nf_pre_routing_finish_ipv6+0x76a/0xfb0 net/bridge/br_netfilter_ipv6.c:154
 NF_HOOK include/linux/netfilter.h:314 [inline]
 br_nf_pre_routing_ipv6+0x3cd/0x8c0 net/bridge/br_netfilter_ipv6.c:184
 br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508
 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
 nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
 br_handle_frame+0xad8/0x14a0 net/bridge/br_input.c:433
 __netif_receive_skb_core.constprop.0+0xa23/0x4a00 net/core/dev.c:5773
 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:5885
 __netif_receive_skb+0x1d/0x160 net/core/dev.c:6000
 process_backlog+0x442/0x15e0 net/core/dev.c:6352
 __napi_poll.constprop.0+0xba/0x550 net/core/dev.c:7324
 napi_poll net/core/dev.c:7388 [inline]
 net_rx_action+0xa97/0x1010 net/core/dev.c:7510
 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579
 do_softirq kernel/softirq.c:480 [inline]
 do_softirq+0xb2/0xf0 kernel/softirq.c:467
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407
 local_bh_enable include/linux/bottom_half.h:33 [inline]
 fpregs_unlock arch/x86/include/asm/fpu/api.h:77 [inline]
 kernel_fpu_end+0x5e/0x70 arch/x86/kernel/fpu/core.c:460
 blake2s_compress+0x7f/0xe0 arch/x86/crypto/blake2s-glue.c:49
 blake2s_final+0xc9/0x150 lib/crypto/blake2s.c:54
 hmac.constprop.0+0x252/0x420 drivers/net/wireguard/noise.c:325
 kdf.constprop.0+0x122/0x280 drivers/net/wireguard/noise.c:360
 message_ephemeral+0x5f/0x70 drivers/net/wireguard/noise.c:493
 wg_noise_handshake_create_initiation+0x2c6/0x650 drivers/net/wireguard/noise.c:545
 wg_packet_send_handshake_initiation+0x19a/0x360 drivers/net/wireguard/send.c:34
 wg_packet_handshake_send_worker+0x1c/0x30 drivers/net/wireguard/send.c:51
 process_one_work+0x9cf/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
net_ratelimit: 2451 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
net_ratelimit: 4285 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:cf:5a:29:58:30, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:08:00:03:00:00:00, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:08:00:03:00:00:00, vlan:0)