bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14958/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=63681, q=1088 ncpus=1)
task:syz.6.1673 state:R running task stack:24312 pid:14958 tgid:14955 ppid:11112 task_flags:0x400140 flags:0x00004002
Call Trace:
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: 85 0b 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 02 71 ed 0e 0f 82 74 02 00 00 8b 35 7a a0 ed 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 d9 84 0b 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90004b96d40 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3bf440 RCX: 000000009c22ba9f
RDX: 0000000000000000 RSI: ffffffff8dbb6284 RDI: ffffffff8bf46ce0
RBP: 0000000000000002 R08: 437f0b3048eb3a99 R09: 0000000000000000
R10: 0000000000000001 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
__set_page_owner+0x91/0x550 mm/page_owner.c:329
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1718
prep_new_page mm/page_alloc.c:1726 [inline]
get_page_from_freelist+0x135c/0x3920 mm/page_alloc.c:3688
__alloc_frozen_pages_noprof+0x263/0x23a0 mm/page_alloc.c:4970
alloc_pages_mpol+0x1fb/0x550 mm/mempolicy.c:2301
folio_alloc_mpol_noprof+0x36/0x2f0 mm/mempolicy.c:2320
shmem_alloc_folio+0x135/0x160 mm/shmem.c:1854
shmem_alloc_and_add_folio+0x499/0xc20 mm/shmem.c:1893
shmem_get_folio_gfp+0x687/0x1530 mm/shmem.c:2533
shmem_fault+0x1fe/0xa30 mm/shmem.c:2734
__do_fault+0x10a/0x490 mm/memory.c:5098
do_shared_fault mm/memory.c:5582 [inline]
do_fault mm/memory.c:5656 [inline]
do_pte_missing+0x1a6/0x3fb0 mm/memory.c:4160
handle_pte_fault mm/memory.c:5997 [inline]
__handle_mm_fault+0x103d/0x2a40 mm/memory.c:6140
handle_mm_fault+0x3fe/0xad0 mm/memory.c:6309
faultin_page mm/gup.c:1193 [inline]
__get_user_pages+0x771/0x36f0 mm/gup.c:1491
__get_user_pages_locked mm/gup.c:1757 [inline]
faultin_page_range+0x249/0x980 mm/gup.c:1981
madvise_populate mm/madvise.c:965 [inline]
madvise_do_behavior+0x233/0x3b0 mm/madvise.c:1693
do_madvise mm/madvise.c:1782 [inline]
do_madvise+0x10b/0x170 mm/madvise.c:1773
__do_sys_madvise mm/madvise.c:1790 [inline]
__se_sys_madvise mm/madvise.c:1788 [inline]
__x64_sys_madvise+0xa9/0x110 mm/madvise.c:1788
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: 0033:0x7f847c18e969
RSP: 002b:00007f847cf44038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f847c3b5fa0 RCX: 00007f847c18e969
RDX: 0000000000000017 RSI: ffffffffffff0005 RDI: 0000000000000000
RBP: 00007f847c210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f847c3b5fa0 R15: 00007fff5ad2d798
rcu: rcu_preempt kthread starved for 498 jiffies! g63681 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:27704 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
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+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 9960 Comm: kworker/u8:30 Tainted: G U 6.15.0-rc5-syzkaller-00123-g2c89c1b655c0 #0 PREEMPT(full)
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
Workqueue: wg-kex-wg1 wg_packet_handshake_send_worker
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:stack_access_ok+0x30/0x200 arch/x86/kernel/unwind_orc.c:393
Code: 00 fc ff df 41 57 41 56 4c 8d 77 08 41 55 41 54 49 89 d4 4c 89 f2 55 48 c1 ea 03 48 89 f5 53 48 89 fb 48 83 ec 08 80 3c 02 00 <0f> 85 94 01 00 00 4c 8d 6b 10 4c 8b 7b 08 48 b8 00 00 00 00 00 fc
RSP: 0018:ffffc90000a07c78 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90000a07d28 RCX: ffffffff91b7a3c6
RDX: 1ffff92000140fa6 RSI: ffffc90000a08860 RDI: ffffc90000a07d28
RBP: ffffc90000a08860 R08: ffffffff91b7a3ca R09: 0000000000000000
R10: 0000000000000006 R11: 0000000000094793 R12: 0000000000000008
R13: ffffc90000a07d28 R14: ffffc90000a07d30 R15: ffffc90000a07d5c
FS: 0000000000000000(0000) GS:ffff888124aee000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f8e78402990 CR3: 000000000e180000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
unwind_next_frame+0xb7d/0x20a0 arch/x86/kernel/unwind_orc.c:585
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+0xbb/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]
br_flood+0x39c/0x650 net/bridge/br_forward.c:249
br_handle_frame_finish+0xe8e/0x1c20 net/bridge/br_input.c:220
br_nf_hook_thresh+0x301/0x410 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+0xad5/0x14a0 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+0xb7/0x550 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
__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+0x14b/0x280 drivers/net/wireguard/noise.c:367
mix_dh+0xe8/0x150 drivers/net/wireguard/noise.c:413
wg_noise_handshake_create_initiation+0x2e1/0x650 drivers/net/wireguard/noise.c:550
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+0x9cc/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+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 2503 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
net_ratelimit: 3731 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:f2:01:d6:4f:b2:2f, vlan:0)