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:12:ab:3a:f3:44:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4985/1:b..l..
rcu: (detected by 0, t=10742 jiffies, g=32321, q=650 ncpus=2)
task:udevd state:R running task stack:25720 pid:4985 tgid:4985 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x125e/0x6990 kernel/sched/core.c:7382
preempt_schedule_notrace+0x57/0xd0 kernel/sched/core.c:7633
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x90/0xc0 kernel/rcu/tree.c:754
rcu_read_unlock include/linux/rcupdate.h:878 [inline]
__page_table_check_zero+0x357/0x410 mm/page_table_check.c:145
page_table_check_free include/linux/page_table_check.h:46 [inline]
__free_pages_prepare mm/page_alloc.c:1402 [inline]
__free_frozen_pages+0x7a5/0x1110 mm/page_alloc.c:2952
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:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4720 [inline]
slab_alloc_node mm/slub.c:5033 [inline]
__do_kmalloc_node mm/slub.c:5530 [inline]
__kmalloc_noprof+0x2cc/0x840 mm/slub.c:5556
_kmalloc_noprof include/linux/slab.h:995 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
lsm_blob_alloc+0x68/0x90 security/security.c:219
lsm_task_alloc security/security.c:271 [inline]
security_task_alloc+0x2a/0x260 security/security.c:2806
copy_process+0x2c48/0x84c0 kernel/fork.c:2299
kernel_clone+0x176/0x9d0 kernel/fork.c:2783
__do_sys_clone+0xd9/0x120 kernel/fork.c:2925
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x123/0x790 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f128baf1636
RSP: 002b:00007fff3d6ba770 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007fff3d6ba778 RCX: 00007f128baf1636
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 000055d1ddae22c0 R08: 0000000000000000 R09: 000055d1ddd18020
R10: 00007f128c277b50 R11: 0000000000000246 R12: 00007fff3d6bab30
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
rcu: rcu_preempt kthread starved for 9815 jiffies! g32321 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:28968 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x125e/0x6990 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0xdd/0x2c0 kernel/sched/core.c:7474
schedule_timeout+0x127/0x280 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x1a9/0x930 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x179/0x260 kernel/rcu/tree.c:2330
kthread+0x373/0x450 kernel/kthread.c:436
ret_from_fork+0x730/0xd60 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: 0 Comm: swapper/1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/05/2026
RIP: 0010:__kasan_check_byte+0x0/0x50 mm/kasan/common.c:583
Code: c9 5b 48 8d 74 15 00 5d ba fe 00 00 00 41 5c 41 5d e9 e4 2a 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <0f> 1f 40 d6 41 54 49 89 f4 55 48 89 fd 53 e8 7d 1e 00 00 89 c3 84
RSP: 0018:ffffc90000a07a48 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: ffffffff81bb1a61 RDI: ffffffff8ffeb520
RBP: ffffffff8ffeb520 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000200 R11: 000000000008ac72 R12: 0000000000000002
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88812259c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc57dc6a2c CR3: 00000000142f6000 CR4: 00000000003526f0
Call Trace:
kasan_check_byte include/linux/kasan.h:402 [inline]
lock_acquire kernel/locking/lockdep.c:5916 [inline]
lock_acquire+0x132/0x380 kernel/locking/lockdep.c:5899
rcu_lock_acquire include/linux/rcupdate.h:309 [inline]
rcu_read_lock include/linux/rcupdate.h:849 [inline]
class_rcu_constructor include/linux/rcupdate.h:1216 [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
kasan_save_stack+0x30/0x50 mm/kasan/common.c:57
kasan_save_track+0x14/0x30 mm/kasan/common.c:78
kasan_save_free_info+0x3b/0x70 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:264 [inline]
__kasan_slab_free+0x5f/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2780 [inline]
slab_free mm/slub.c:6630 [inline]
kmem_cache_free+0x127/0x6c0 mm/slub.c:6757
__skb_ext_put+0x102/0x300 net/core/skbuff.c:7436
skb_ext_reset include/linux/skbuff.h:5145 [inline]
skb_ext_reset include/linux/skbuff.h:5142 [inline]
skb_release_head_state+0x2c8/0x400 net/core/skbuff.c:1180
skb_release_all net/core/skbuff.c:1186 [inline]
__kfree_skb net/core/skbuff.c:1202 [inline]
sk_skb_reason_drop+0xc4/0x1b0 net/core/skbuff.c:1241
kfree_skb_reason include/linux/skbuff.h:1329 [inline]
kfree_skb include/linux/skbuff.h:1338 [inline]
ip6_mc_input+0x8bf/0x1060 net/ipv6/ip6_input.c:639
dst_input include/net/dst.h:481 [inline]
ip6_rcv_finish+0x294/0x300 net/ipv6/ip6_input.c:119
ip_sabotage_in+0x21e/0x290 net/bridge/br_netfilter_hooks.c:989
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xbf/0x220 net/netfilter/core.c:633
nf_hook.constprop.0+0x2a6/0x750 include/linux/netfilter.h:280
NF_HOOK include/linux/netfilter.h:323 [inline]
ipv6_rcv+0xa4/0x3d0 net/ipv6/ip6_input.c:351
__netif_receive_skb_one_core+0x12d/0x1e0 net/core/dev.c:6405
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6518
netif_receive_skb_internal net/core/dev.c:6604 [inline]
netif_receive_skb+0x139/0x7d0 net/core/dev.c:6663
NF_HOOK include/linux/netfilter.h:325 [inline]
NF_HOOK include/linux/netfilter.h:319 [inline]
br_pass_frame_up+0x348/0x490 net/bridge/br_input.c:70
br_handle_frame_finish+0xab2/0x1ff0 net/bridge/br_input.c:237
br_nf_hook_thresh+0x30d/0x420 net/bridge/br_netfilter_hooks.c:1166
br_nf_pre_routing_finish_ipv6+0x662/0xde0 net/bridge/br_netfilter_ipv6.c:153
NF_HOOK include/linux/netfilter.h:325 [inline]
br_nf_pre_routing_ipv6+0x39b/0x8b0 net/bridge/br_netfilter_ipv6.c:183
br_nf_pre_routing+0x8b4/0x1510 net/bridge/br_netfilter_hooks.c:514
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:293 [inline]
br_handle_frame+0xd59/0x1660 net/bridge/br_input.c:453
__netif_receive_skb_core.constprop.0+0x736/0x35a0 net/core/dev.c:6292
__netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:6403
__netif_receive_skb+0x1f/0x120 net/core/dev.c:6518
process_backlog+0x487/0x1600 net/core/dev.c:6869
__napi_poll.constprop.0+0xaf/0x450 net/core/dev.c:7938
napi_poll net/core/dev.c:8001 [inline]
net_rx_action+0xa40/0xf20 net/core/dev.c:8158
handle_softirqs+0x216/0xa20 kernel/softirq.c:669
__do_softirq kernel/softirq.c:703 [inline]
invoke_softirq kernel/softirq.c:542 [inline]
__irq_exit_rcu+0x178/0x220 kernel/softirq.c:786
irq_exit_rcu+0x9/0x30 kernel/softirq.c:809
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:64
Code: f7 a4 02 e9 83 63 03 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 03 ee 21 00 fb f4 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffc90000197e00 EFLAGS: 00000246
RAX: 0000000002f1be2b RBX: ffff88801fe92580 RCX: ffffffff8be9d325
RDX: 0000000000000001 RSI: ffffffff8e61c5eb RDI: ffffffff8c831080
RBP: ffffed1003fd24b0 R08: 0000000000000001 R09: ffffed1017026825
R10: ffff8880b813412b R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 1ffff92000032fc4 R15: dffffc0000000000
arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline]
default_idle+0x9/0x10 arch/x86/kernel/process.c:768
default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
cpuidle_idle_call kernel/sched/idle.c:199 [inline]
do_idle+0x3ae/0x5b0 kernel/sched/idle.c:355
cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:454
start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312
common_startup_64+0x13e/0x158
net_ratelimit: 20240 callbacks suppressed
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:0c, 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:0c, 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:0c, 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:0c, 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:0c, vlan:0)