bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P19423/1:b..l P11477/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=121205, q=1597 ncpus=2)
task:syz-executor state:R running task stack:21896 pid:11477 tgid:11477 ppid:11467 task_flags:0x400140 flags:0x20000000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7090
irqentry_exit+0x6f/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_is_held_type+0x137/0x190 kernel/locking/lockdep.c:5943
Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 89 34 1f 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90003f5fa78 EFLAGS: 00000206
RAX: f04f0a13bfa1ed00 RBX: 0000000000000001 RCX: f04f0a13bfa1ed00
RDX: 0000000000000000 RSI: ffffffff8d935c50 RDI: ffffffff8bc1d260
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff822caa9a R12: 0000000000000246
R13: ffff88802b50bc00 R14: ffffffff8df3b860 R15: 0000000000000001
lookup_page_ext mm/page_ext.c:254 [inline]
page_ext_lookup+0xe2/0x160 mm/page_ext.c:520
page_ext_iter_begin include/linux/page_ext.h:132 [inline]
__page_table_check_zero+0x16e/0x510 mm/page_table_check.c:139
page_table_check_free include/linux/page_table_check.h:41 [inline]
free_pages_prepare mm/page_alloc.c:1263 [inline]
__free_frozen_pages+0xb22/0xcd0 mm/page_alloc.c:2725
discard_slab mm/slub.c:2716 [inline]
__put_partials+0x161/0x1c0 mm/slub.c:3185
put_cpu_partial+0x17c/0x250 mm/slub.c:3260
__slab_free+0x2f7/0x400 mm/slub.c:4512
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:329
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+0x1c1/0x3c0 mm/slub.c:4203
getname_flags+0xb8/0x540 fs/namei.c:146
user_path_at+0x24/0x60 fs/namei.c:3119
ksys_umount fs/namespace.c:2164 [inline]
__do_sys_umount fs/namespace.c:2172 [inline]
__se_sys_umount fs/namespace.c:2170 [inline]
__ia32_sys_umount+0xee/0x160 fs/namespace.c:2170
do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
__do_fast_syscall_32+0xb4/0x110 arch/x86/entry/syscall_32.c:306
do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf7fe7539
RSP: 002b:00000000f75cecd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000034
RAX: ffffffffffffffda RBX: 00000000f75ced80 RCX: 0000000000000009
RDX: 00000000f7472ff4 RSI: 00000000f72f6630 RDI: 00000000f75cfe14
RBP: 00000000f75ced80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
task:syz.0.4350 state:R running task stack:27064 pid:19423 tgid:19421 ppid:15347 task_flags:0x40044c flags:0x20004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6947
preempt_schedule+0xae/0xc0 kernel/sched/core.c:6971
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1761 [inline]
zap_pmd_range mm/memory.c:1823 [inline]
zap_pud_range mm/memory.c:1852 [inline]
zap_p4d_range mm/memory.c:1873 [inline]
unmap_page_range+0x3756/0x4210 mm/memory.c:1894
unmap_vmas+0x25d/0x3c0 mm/memory.c:1984
exit_mmap+0x245/0xba0 mm/mmap.c:1284
__mmput+0x118/0x420 kernel/fork.c:1379
exit_mm+0x1da/0x2c0 kernel/exit.c:589
do_exit+0x859/0x2550 kernel/exit.c:940
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x125e/0x1310 kernel/signal.c:3034
arch_do_signal_or_restart+0x95/0x780 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x8b/0x120 kernel/entry/common.c:218
__do_fast_syscall_32+0xc1/0x110 arch/x86/entry/syscall_32.c:309
do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331
entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf707e539
RSP: 002b:00000000f506e60c EFLAGS: 00000206 ORIG_RAX: 00000000000000f0
RAX: 0000000000000000 RBX: 00000000f7414f88 RCX: 0000000000000080
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000f7414f8c
RBP: 0000000000000081 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 9125 jiffies! g121205 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:27304 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x16e2/0x4cd0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2046
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2248
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/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:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 19426 Comm: kworker/u8:9 Not tainted 6.15.0-rc5-syzkaller-00136-g9c69f8884904 #0 PREEMPT(full)
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:check_wait_context kernel/locking/lockdep.c:4878 [inline]
RIP: 0010:__lock_acquire+0x4c0/0xd20 kernel/locking/lockdep.c:5185
Code: 0a 00 00 0f 8d 09 01 00 00 49 63 de 48 8d 04 9b 4c 8d 34 c7 49 81 c6 10 0b 00 00 eb 1d 44 89 e0 48 ff c3 48 63 8f e8 0a 00 00 <49> 83 c6 28 41 89 c4 48 39 cb 0f 8d db 00 00 00 48 83 fb 31 0f 83
RSP: 0000:ffffc90000006d60 EFLAGS: 00000007
RAX: 0000000000000003 RBX: 0000000000000006 RCX: 0000000000000006
RDX: 0000000000000003 RSI: 0000000000000003 RDI: ffff88805e859e00
RBP: ffff88805e85a8f0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8a39c80e R12: 0000000000000003
R13: 0000000000000000 R14: ffff88805e85a9d8 R15: ffff88805e85a9e0
FS: 0000000000000000(0000) GS:ffff8881260cc000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f3ef0218 CR3: 0000000031cbc000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x120/0x360 kernel/locking/lockdep.c:5866
rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
rcu_read_lock include/linux/rcupdate.h:841 [inline]
nf_hook include/linux/netfilter.h:238 [inline]
NF_HOOK+0xba/0x6b0 include/linux/netfilter.h:312
br_nf_forward_ip+0x647/0x7e0 net/bridge/br_netfilter_hooks.c:719
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc2/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x215/0x3c0 include/linux/netfilter.h:312
__br_forward+0x41e/0x600 net/bridge/br_forward.c:115
br_handle_frame_finish+0x146c/0x1950 net/bridge/br_input.c:220
br_nf_hook_thresh+0x3bf/0x490 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0x97f/0x14c0 net/bridge/br_input.c:433
__netif_receive_skb_core+0x10de/0x4180 net/core/dev.c:5773
__netif_receive_skb_one_core net/core/dev.c:5885 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6000
process_backlog+0x60e/0x14f0 net/core/dev.c:6352
__napi_poll+0xc4/0x480 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510
handle_softirqs+0x283/0x870 kernel/softirq.c:579
do_softirq+0xec/0x180 kernel/softirq.c:480
__local_bh_enable_ip+0x17d/0x1c0 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+0xd2/0x120 arch/x86/kernel/fpu/core.c:460
blake2s_compress+0x5f/0xd0 arch/x86/crypto/blake2s-glue.c:49
blake2s_final+0x116/0x260 lib/crypto/blake2s.c:54
hmac+0x1c6/0x330 drivers/net/wireguard/noise.c:325
kdf+0xde/0x270 drivers/net/wireguard/noise.c:360
mix_precomputed_dh drivers/net/wireguard/noise.c:426 [inline]
wg_noise_handshake_create_initiation+0x462/0x7e0 drivers/net/wireguard/noise.c:560
wg_packet_send_handshake_initiation drivers/net/wireguard/send.c:34 [inline]
wg_packet_handshake_send_worker+0x163/0x320 drivers/net/wireguard/send.c:51
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 12580 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
net_ratelimit: 16883 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:9a:04:73:5b:d6:e9, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)