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 veth1_to_bridge with own address as source address (addr:72:05:7e:96:49:06, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P27442/1:b..l P27378/1:b..l
rcu: (detected by 1, t=10715 jiffies, g=129237, q=1904 ncpus=2)
task:udevd state:R running task stack:27208 pid:27378 tgid:27378 ppid:4984 task_flags:0x40014c flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:deref_stack_reg+0x1c3/0x220 arch/x86/kernel/unwind_orc.c:424
Code: 48 c1 e8 03 42 80 3c 38 00 74 08 48 89 df e8 54 d7 bf 00 4c 89 33 b0 01 eb 02 31 c0 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f 5d 18 ff 70 0a cc 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c b6 fe ff
RSP: 0018:ffffc900052574d8 EFLAGS: 00000282
RAX: 1ffff92000a4ae01 RBX: ffffffff9111e38a RCX: 0000000000000001
RDX: ffffc900052575c8 RSI: dffffc0000000000 RDI: ffffc90005257cf8
RBP: 1ffffffff2223c71 R08: ffffc90005257cf8 R09: 0000000000000000
R10: ffffc900052575d8 R11: fffff52000a4aebd R12: dffffc0000000000
R13: ffffffff9111e38b R14: ffffc90005257588 R15: ffffc900052575d0
unwind_next_frame+0x19bd/0x2550 arch/x86/kernel/unwind_orc.c:-1
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
poison_kmalloc_redzone mm/kasan/common.c:409 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:426
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563
_kmalloc_noprof include/linux/slab.h:991 [inline]
slab_free_hook mm/slub.c:2700 [inline]
slab_free mm/slub.c:6508 [inline]
kmem_cache_free+0x156/0x650 mm/slub.c:6635
tear_down_vmas+0x31f/0x530 mm/mmap.c:1277
exit_mmap+0x4ca/0x9f0 mm/mmap.c:1335
__mmput+0x118/0x420 kernel/fork.c:1193
exit_mm+0x18e/0x240 kernel/exit.c:592
do_exit+0x6cd/0x2360 kernel/exit.c:974
do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
__do_sys_exit_group kernel/exit.c:1140 [inline]
__se_sys_exit_group kernel/exit.c:1138 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1138
x64_sys_call+0x18c6/0x18d0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f59716f16c5
RSP: 002b:00007fff0807ee58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000558a6fb55040 RCX: 00007f59716f16c5
RDX: 00000000000000e7 RSI: fffffffffffffe68 RDI: 0000000000000000
RBP: 0000558a6fb33910 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff0807eea0 R14: 0000000000000000 R15: 0000000000000000
task:modprobe state:R running task stack:24296 pid:27442 tgid:27442 ppid:104 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_is_held_type+0x106/0x150 kernel/locking/lockdep.c:6021
Code: 1b 00 00 b8 ff ff ff ff 65 0f c1 05 1c 7c ae 07 83 f8 01 75 25 9c 58 a9 00 02 00 00 75 39 41 f7 c4 00 02 00 00 74 01 fb 89 d8 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 5b 01 03 00 cc 90 0f 0b 90 48 c7
RSP: 0018:ffffc90005236f08 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e689b1a RDI: ffffffff8c6dad80
RBP: 00000000ffffffff R08: ffffffff8243dcfc R09: 0000000000000000
R10: dffffc0000000000 R11: ffffed100638a9b6 R12: 0000000000000246
R13: ffff88802fccddc0 R14: ffffffff8ed5c8a0 R15: 0000000000000002
lookup_page_ext mm/page_ext.c:253 [inline]
page_ext_lookup+0xe7/0x180 mm/page_ext.c:504
page_ext_iter_begin include/linux/page_ext.h:136 [inline]
__page_table_check_zero+0x16b/0x430 mm/page_table_check.c:139
page_table_check_free include/linux/page_table_check.h:46 [inline]
__free_pages_prepare mm/page_alloc.c:1419 [inline]
__free_frozen_pages+0xca3/0xd90 mm/page_alloc.c:2962
__slab_free+0x274/0x2c0 mm/slub.c:5823
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x99/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:361
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4683 [inline]
slab_alloc_node mm/slub.c:4996 [inline]
kmem_cache_alloc_noprof+0x2b9/0x600 mm/slub.c:5010
vm_area_dup+0x28/0x760 mm/vma_init.c:128
__split_vma+0x1d7/0xa60 mm/vma.c:560
vms_gather_munmap_vmas+0x322/0x1370 mm/vma.c:1507
__mmap_setup mm/vma.c:2546 [inline]
__mmap_region mm/vma.c:2869 [inline]
mmap_region+0x925/0x25b0 mm/vma.c:2974
do_mmap+0xe0a/0x1300 mm/mmap.c:573
vm_mmap_pgoff+0x272/0x4e0 mm/util.c:581
ksys_mmap_pgoff+0x4dc/0x760 mm/mmap.c:619
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbcb2608242
RSP: 002b:00007ffc16f20aa8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007fbcb230d000 RCX: 00007fbcb2608242
RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007fbcb230d000
RBP: 0000000000000812 R08: 0000000000000000 R09: 000000000002c000
R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc16f20b68
R13: 00007fbcb25ddab0 R14: 00007ffc16f20f20 R15: 00000fff82de4158
rcu: rcu_preempt kthread starved for 9869 jiffies! g129237 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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:28104 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
__schedule_loop kernel/sched/core.c:7361 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7376
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2330
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 23382 Comm: kworker/R-bond5 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: 0x0 (bond5)
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:26 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:109 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:151 [inline]
RIP: 0010:lock_acquire+0x13c/0x350 kernel/locking/lockdep.c:5946
Code: 02 00 00 48 83 c4 30 48 c7 c7 1a 9b 68 8e e8 0b ed 42 0a b8 ff ff ff ff 65 0f c1 05 c6 4d f1 11 83 f8 01 0f 85 b0 00 00 00 9c <58> a9 00 02 00 00 0f 85 c3 00 00 00 f7 44 24 10 00 02 00 00 0f 85
RSP: 0018:ffffc90000006560 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 8000000000000100
RDX: 000000004dbb4af1 RSI: ffffffff8e689b1a RDI: ffffffff8c6dad80
RBP: ffff88802f65ddc0 R08: ffffffff817801df R09: 0000000000000000
R10: ffffc900000066f8 R11: ffffffff81b2b310 R12: ffffffff8ed5c8a0
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3fdd94eeb8 CR3: 0000000061450000 CR4: 00000000003526f0
Call Trace:
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+0xac/0x2550 arch/x86/kernel/unwind_orc.c:495
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:57 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:264 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:296
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2748 [inline]
slab_free mm/slub.c:6508 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6635
skb_ext_del include/linux/skbuff.h:5119 [inline]
nf_bridge_info_free net/bridge/br_netfilter_hooks.c:157 [inline]
br_nf_dev_queue_xmit+0x4f6/0x25c0 net/bridge/br_netfilter_hooks.c:856
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_post_routing+0xa51/0xee0 net/bridge/br_netfilter_hooks.c:964
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
br_forward_finish+0xd3/0x130 net/bridge/br_forward.c:80
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_forward_finish+0xa76/0xea0 net/bridge/br_netfilter_hooks.c:667
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:325
br_nf_forward_ip+0x7e7/0xa30 net/bridge/br_netfilter_hooks.c:721
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:633
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
__br_forward+0x41e/0x5d0 net/bridge/br_forward.c:130
deliver_clone net/bridge/br_forward.c:146 [inline]
maybe_deliver+0x373/0x5b0 net/bridge/br_forward.c:212
br_flood+0x142/0x650 net/bridge/br_forward.c:345
br_handle_frame_finish+0x11fc/0x1ae0 net/bridge/br_input.c:231
br_nf_hook_thresh+0x3dd/0x4c0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x90c/0xc40 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:325 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:293 [inline]
br_handle_frame+0x1329/0x1600 net/bridge/br_input.c:453
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6222
__netif_receive_skb_one_core net/core/dev.c:6333 [inline]
__netif_receive_skb net/core/dev.c:6448 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6799
__napi_poll+0xaa/0x330 net/core/dev.c:7868
napi_poll net/core/dev.c:7931 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8088
handle_softirqs+0x226/0x860 kernel/softirq.c:645
__do_softirq kernel/softirq.c:679 [inline]
invoke_softirq kernel/softirq.c:519 [inline]
__irq_exit_rcu+0xcb/0x220 kernel/softirq.c:758
irq_exit_rcu+0x9/0x30 kernel/softirq.c:775
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:wq_worker_sleeping+0x4/0x2b0 kernel/workqueue.c:1485
Code: 89 ff e8 df c3 a9 00 e9 d8 fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 40 d6 <55> 41 57 41 56 41 55 41 54 53 48 83 ec 18 48 89 fb 65 48 8b 05 ab
RSP: 0018:ffffc90003537cb0 EFLAGS: 00000202
RAX: 0000000004208060 RBX: ffff88802f65ddc0 RCX: 0000000000000046
RDX: 000000000033bdbd RSI: ffffffff8e689b1a RDI: ffff88802f65ddc0
RBP: 1ffff11005ecbbbb R08: ffffffff8be75730 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff20f34b0 R12: ffff88802f65ddec
R13: dffffc0000000000 R14: ffffffff8be75730 R15: ffff88802f65ddd8
sched_submit_work kernel/sched/core.c:7327 [inline]
schedule+0xea/0x2b0 kernel/sched/core.c:7375
rescuer_thread+0xf7f/0x10e0 kernel/workqueue.c:3752
kthread+0x38b/0x480 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 10971 callbacks suppressed