bridge0: received packet on veth1_to_bridge with own address as source address (addr:1a:72:6a:05:64:18, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5605/1:b..l P14547/1:b..l
rcu: (detected by 0, t=10502 jiffies, g=92885, q=1392 ncpus=2)
task:syz-executor state:R running task stack:23848 pid:14547 tgid:14547 ppid:14533 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x10e9/0x6820 kernel/sched/core.c:7188
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x5e/0x370 kernel/locking/lockdep.c:5872
Code: 05 fb fd 25 12 83 f8 07 0f 87 d9 02 00 00 48 0f a3 05 06 15 f3 0e 0f 82 a4 02 00 00 8b 35 8e 48 f3 0e 85 f6 0f 85 bf 00 00 00 <48> 8b 44 24 30 65 48 2b 05 9d fd 25 12 0f 85 ed 02 00 00 48 83 c4
RSP: 0018:ffffc900061677f0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8def8e2a RDI: ffffffff8c1c3200
RBP: ffffffff8e7e54e0 R08: 000000002f091286 R09: 0000000000000007
R10: 0000000000000200 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
unwind_next_frame+0xd1/0x2090 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x162/0x1e0 mm/page_owner.c:165
__reset_page_owner+0x84/0x190 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0x747/0x1040 mm/page_alloc.c:2943
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4569 [inline]
slab_alloc_node mm/slub.c:4898 [inline]
__do_kmalloc_node mm/slub.c:5294 [inline]
__kmalloc_noprof+0x2b9/0x850 mm/slub.c:5307
kmalloc_noprof include/linux/slab.h:954 [inline]
kzalloc_noprof include/linux/slab.h:1188 [inline]
lsm_blob_alloc+0x68/0x90 security/security.c:218
lsm_sock_alloc security/security.c:4478 [inline]
security_sk_alloc+0x2d/0x290 security/security.c:4494
sk_prot_alloc+0x1d1/0x2a0 net/core/sock.c:2250
sk_alloc+0x36/0xe80 net/core/sock.c:2303
inet_create net/ipv4/af_inet.c:333 [inline]
inet_create+0x3a0/0x1060 net/ipv4/af_inet.c:259
__sock_create+0x339/0x860 net/socket.c:1664
sock_create net/socket.c:1722 [inline]
__sys_socket_create net/socket.c:1759 [inline]
__sys_socket+0x14d/0x260 net/socket.c:1806
__do_sys_socket net/socket.c:1820 [inline]
__se_sys_socket net/socket.c:1818 [inline]
__x64_sys_socket+0x72/0xb0 net/socket.c:1818
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe5ced9e647
RSP: 002b:00007fff011e2ad8 EFLAGS: 00000202 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fe5ced9e647
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 00007fff011e31dc R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000038
R13: 00000000000927c0 R14: 000000000009a72d R15: 00007fff011e3230
task:syz-executor state:R running task stack:23144 pid:5605 tgid:5605 ppid:5602 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x10e9/0x6820 kernel/sched/core.c:7188
preempt_schedule_irq+0x50/0x90 kernel/sched/core.c:7512
irqentry_exit_to_kernel_mode_preempt include/linux/irq-entry-common.h:476 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x1fe/0x790 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:page_ext_next include/linux/page_ext.h:109 [inline]
RIP: 0010:page_ext_iter_next include/linux/page_ext.h:157 [inline]
RIP: 0010:__page_table_check_zero+0x232/0x410 mm/page_table_check.c:139
Code: 48 89 c6 48 89 04 24 e8 4c 15 86 ff 48 8b 04 24 48 85 c0 74 46 e8 5e 1a 86 ff 48 8b 44 24 18 42 80 3c 30 00 0f 85 b9 01 00 00 <4c> 03 25 87 ae 9a 18 e8 42 1a 86 ff 48 83 c5 01 4d 85 e4 0f 84 bc
RSP: 0018:ffffc900042c7850 EFLAGS: 00000246
RAX: 1ffffffff363a46c RBX: 000000000003a2e2 RCX: ffffffff828274b4
RDX: ffff88807d252500 RSI: ffffffff828274c2 RDI: ffff88807d252500
RBP: 0000000000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 00000000000022e2 R11: 0000000000000000 R12: ffff88801d4ae650
R13: 0000000000000001 R14: dffffc0000000000 R15: ffff88801d4ae69c
page_table_check_free include/linux/page_table_check.h:46 [inline]
__free_pages_prepare mm/page_alloc.c:1403 [inline]
__free_frozen_pages+0x72a/0x1040 mm/page_alloc.c:2943
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x47/0xf0 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x1a0/0x1f0 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x69/0x90 mm/kasan/common.c:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4569 [inline]
slab_alloc_node mm/slub.c:4898 [inline]
kmem_cache_alloc_noprof+0x241/0x6e0 mm/slub.c:4905
lsm_file_alloc security/security.c:171 [inline]
security_file_alloc+0x34/0x2c0 security/security.c:2406
init_file+0x95/0x480 fs/file_table.c:184
alloc_empty_file+0x79/0x1c0 fs/file_table.c:266
path_openat+0xe8/0x31a0 fs/namei.c:4844
do_file_open+0x20e/0x430 fs/namei.c:4887
do_sys_openat2+0x10d/0x1e0 fs/open.c:1364
do_sys_open fs/open.c:1370 [inline]
__do_sys_openat fs/open.c:1386 [inline]
__se_sys_openat fs/open.c:1381 [inline]
__x64_sys_openat+0x12d/0x210 fs/open.c:1381
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0ae4b9c0fc
RSP: 002b:00007fffb8bd83b0 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0ae4c32120 RCX: 00007f0ae4b9c0fc
RDX: 0000000000090800 RSI: 00007fffb8bd9560 RDI: 00000000ffffff9c
RBP: 00007fffb8bd954c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00007fffb8bd9560
R13: 00007f0ae4c32120 R14: 000000000009921e R15: 00007fffb8bd95a0
rcu: rcu_preempt kthread starved for 2588 jiffies! g92885 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:28216 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5387 [inline]
__schedule+0x10e9/0x6820 kernel/sched/core.c:7188
__schedule_loop kernel/sched/core.c:7267 [inline]
schedule+0xdd/0x390 kernel/sched/core.c:7282
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+0x72b/0xd50 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 5618 Comm: kworker/u9:5 Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: krxrpcd rxrpc_peer_keepalive_worker
RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:68
Code: ff ff 48 c7 c7 58 c2 ab 8b e8 69 92 be 00 e9 1e fa ff ff 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 48 8b 07 cc cc cc cc 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000a07970 EFLAGS: 00000202
RAX: ffffffff8ab54337 RBX: 0000000000000001 RCX: ffffffff917720da
RDX: ffffc900043a7b01 RSI: ffffc900043a7b48 RDI: ffffc900043a7b48
RBP: ffffc90000a07a30 R08: ffffffff917720de R09: 0000000000000007
R10: 0000000000000200 R11: 000000000000c83e R12: ffffc90000a07a38
R13: ffffc90000a079e8 R14: ffffc900043a7b50 R15: ffffc90000a07a1c
FS: 0000000000000000(0000) GS:ffff888124479000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055faf5029be0 CR3: 000000005fa3b000 CR4: 00000000003526f0
Call Trace:
deref_stack_reg arch/x86/kernel/unwind_orc.c:422 [inline]
unwind_next_frame+0xd07/0x2090 arch/x86/kernel/unwind_orc.c:614
arch_stack_walk+0x94/0xf0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5295 [inline]
__kmalloc_node_track_caller_noprof+0x304/0x850 mm/slub.c:5403
__kmemdup_nul mm/util.c:64 [inline]
kstrdup+0x51/0xe0 mm/util.c:84
security_netlbl_sid_to_secattr+0x1d8/0x4d0 security/selinux/ss/services.c:3973
selinux_netlbl_skbuff_setsid+0x2c2/0x5e0 security/selinux/netlabel.c:254
selinux_ip_forward+0x396/0x550 security/selinux/hooks.c:6013
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:619
nf_hook+0x2f3/0x7a0 include/linux/netfilter.h:273
NF_HOOK include/linux/netfilter.h:316 [inline]
br_nf_forward_ip.part.0+0x5f3/0x820 net/bridge/br_netfilter_hooks.c:717
br_nf_forward_ip net/bridge/br_netfilter_hooks.c:677 [inline]
br_nf_forward+0xfe5/0x19f0 net/bridge/br_netfilter_hooks.c:774
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK include/linux/netfilter.h:316 [inline]
__br_forward+0x2f7/0x970 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
br_flood+0x37f/0x650 net/bridge/br_forward.c:250
br_handle_frame_finish+0xff4/0x1f60 net/bridge/br_input.c:229
br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1161
br_nf_pre_routing_finish_ipv6+0x659/0xdd0 net/bridge/br_netfilter_ipv6.c:153
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x39c/0x8b0 net/bridge/br_netfilter_ipv6.c:183
br_nf_pre_routing+0x90f/0x1560 net/bridge/br_netfilter_hooks.c:509
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+0x6c5/0x3530 net/core/dev.c:6089
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6200
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6315
process_backlog+0x37a/0x1580 net/core/dev.c:6666
__napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7730
napi_poll net/core/dev.c:7793 [inline]
net_rx_action+0xa40/0xf20 net/core/dev.c:7950
handle_softirqs+0x1ea/0xa00 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:396 [inline]
rxrpc_peer_keepalive_worker+0x407/0xec0 net/rxrpc/peer_event.c:352
process_one_work+0xa0e/0x1980 kernel/workqueue.c:3302
process_scheduled_works kernel/workqueue.c:3385 [inline]
worker_thread+0x5ef/0xe50 kernel/workqueue.c:3466
kthread+0x370/0x450 kernel/kthread.c:436
ret_from_fork+0x72b/0xd50 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
audit: audit_backlog=65 > audit_backlog_limit=64
audit: audit_backlog=65 > audit_backlog_limit=64
audit: audit_lost=326 audit_rate_limit=0 audit_backlog_limit=64
audit: audit_lost=327 audit_rate_limit=0 audit_backlog_limit=64
audit: backlog limit exceeded
audit: backlog limit exceeded
net_ratelimit: 16551 callbacks suppressed
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:1a:72:6a:05:64:18, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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:1c, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)