bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P4979/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=127329, q=1635 ncpus=2)
task:udevd state:R running task stack:20648 pid:4979 tgid:4979 ppid:1 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:229 [inline]
RIP: 0010:unwind_next_frame+0x229/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 00 00 45 8b 6d 00 44 89 f8 ff c0 4c 8d 24 85 f8 fd 9d 91 4c 89 e0 48 c1 e8 03 0f b6 04 18 84 c0 0f 85 66 1d 00 00 45 8b 04 24 <41> ff c0 4a 8d 04 6d 00 00 00 00 4c 01 e8 48 8d 34 45 ec b3 e5 90
RSP: 0018:ffffc90003bc7340 EFLAGS: 00000246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000080000000
RDX: 00000000000ad658 RSI: ffffffff8c4bbf60 RDI: ffffffff8c4bbf20
RBP: ffffffff8484328a R08: 00000000000a2993 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: ffffffff91ac0ec4
R13: 00000000000a298e R14: ffffc90003bc73e8 R15: 0000000000038432
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
save_stack+0x122/0x230 mm/page_owner.c:165
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:320
reset_page_owner include/linux/page_owner.h:25 [inline]
__free_pages_prepare mm/page_alloc.c:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5741
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:350
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
__do_kmalloc_node mm/slub.c:5333 [inline]
__kmalloc_noprof+0x311/0x720 mm/slub.c:5359
_kmalloc_noprof include/linux/slab.h:992 [inline]
tomoyo_realpath_from_path+0xef/0x640 security/tomoyo/realpath.c:251
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_perm+0x283/0x560 security/tomoyo/file.c:827
security_inode_getattr+0x12b/0x310 security/security.c:1895
vfs_getattr+0x23/0x70 fs/stat.c:259
vfs_statx_path+0x2b/0x230 fs/stat.c:299
vfs_statx+0x12e/0x200 fs/stat.c:356
vfs_fstatat+0x11b/0x170 fs/stat.c:373
__do_sys_newfstatat fs/stat.c:538 [inline]
__se_sys_newfstatat fs/stat.c:532 [inline]
__x64_sys_newfstatat+0x151/0x200 fs/stat.c:532
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f768b311b0a
RSP: 002b:00007ffc15c5e1a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000558355ce3410 RCX: 00007f768b311b0a
RDX: 00007ffc15c5e1b0 RSI: 0000558355cd12a8 RDI: 00000000ffffff9c
RBP: 0000558382996148 R08: 00063478c1c69200 R09: 3fffffffffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffc15c5e1b0 R14: 0000000000000000 R15: 00063478c1c69200
rcu: rcu_preempt kthread starved for 8763 jiffies! g127329 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:27656 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7326
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
kthread+0x388/0x470 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 18404 Comm: ipvs-e:8:0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:37 [inline]
RIP: 0010:native_write_msr arch/x86/include/asm/msr.h:139 [inline]
RIP: 0010:wrmsrq arch/x86/include/asm/msr.h:199 [inline]
RIP: 0010:native_apic_msr_write+0x39/0x50 arch/x86/include/asm/apic.h:208
Code: 74 2a 83 ff 30 74 25 eb 10 81 ff d0 00 00 00 74 1b 81 ff e0 00 00 00 74 13 c1 ef 04 81 c7 00 08 00 00 89 f9 89 f0 31 d2 0f 30 <66> 90 e9 00 6b 5f 0a cc 89 f6 31 d2 e9 36 10 9b 03 66 0f 1f 44 00
RSP: 0018:ffffc90000a07990 EFLAGS: 00000046
RAX: 00000000000005e0 RBX: ffff8880b8723c80 RCX: 0000000000000838
RDX: 0000000000000000 RSI: 00000000000005e0 RDI: 0000000000000838
RBP: ffffc90000a07a60 R08: ffffffff81b3fb45 R09: 0000000000080000
R10: 0000000000000000 R11: ffffffff8174d530 R12: 00000000000005e0
R13: dffffc0000000000 R14: 0000000010004676 R15: 0000000000000020
FS: 0000000000000000(0000) GS:ffff888125049000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055838298ca38 CR3: 000000000e946000 CR4: 00000000003526f0
Call Trace:
apic_write arch/x86/include/asm/apic.h:405 [inline]
lapic_next_event+0x11/0x20 arch/x86/kernel/apic/apic.c:418
clockevents_program_event+0x385/0x630 kernel/time/clockevents.c:372
hrtimer_rearm kernel/time/hrtimer.c:2141 [inline]
__hrtimer_rearm_deferred+0x26c/0x420 kernel/time/hrtimer.c:2161
hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:53 [inline]
hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:62 [inline]
irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
irqentry_exit+0x8b7/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x226/0x350 kernel/locking/lockdep.c:5872
Code: ad 2f 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 db b7 ca 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 5b 41 5c 41 5d <41> 5e 41 5f 5d e9 80 b0 32 0a cc 48 8d 3d e8 65 b8 0e 67 48 0f b9
RSP: 0018:ffffc90000a07bb8 EFLAGS: 00000286
RAX: a097b67440c57800 RBX: ffffffff89a3a019 RCX: 0000000080000101
RDX: 00000000a42637f2 RSI: ffffffff8e4b233f RDI: ffffffff8c4bbf80
RBP: ffffffff8177827f R08: ffffffff8177827f R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8eb59c60 R12: dffffc0000000000
R13: ffffffff8177827f R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [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
unpoison_slab_object mm/kasan/common.c:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4584 [inline]
slab_alloc_node mm/slub.c:4917 [inline]
kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4931
skb_ext_maybe_cow net/core/skbuff.c:7118 [inline]
skb_ext_add+0x1b6/0x8e0 net/core/skbuff.c:7193
nf_bridge_unshare net/bridge/br_netfilter_hooks.c:170 [inline]
br_nf_forward_ip+0xc3/0xa30 net/bridge/br_netfilter_hooks.c:686
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:316
__br_forward+0x397/0x540 net/bridge/br_forward.c:115
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver net/bridge/br_forward.c:191 [inline]
br_flood+0x3e6/0x8d0 net/bridge/br_forward.c:245
br_handle_frame_finish+0x1175/0x1990 net/bridge/br_input.c:229
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:318 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x127f/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6103
__netif_receive_skb_one_core net/core/dev.c:6214 [inline]
__netif_receive_skb net/core/dev.c:6329 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6680
__napi_poll+0xaa/0x330 net/core/dev.c:7739
napi_poll net/core/dev.c:7802 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7959
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
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:finish_task_switch+0x417/0xc60 kernel/sched/core.c:5361
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 53 8c 3f 0a e8 6e aa 39 00 fb 4c 8b 65 c8 <49> 8d bc 24 f8 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000591f7e0 EFLAGS: 00000202
RAX: 000000000004e0df RBX: ffff8880b873bf20 RCX: 0000000080000001
RDX: 0000000000000000 RSI: ffffffff8e22cd57 RDI: ffffffff8c4bbf80
RBP: ffffc9000591f830 R08: ffffffff90578f37 R09: 1ffffffff20af1e6
R10: dffffc0000000000 R11: fffffbfff20af1e7 R12: ffff8880565c0000
R13: ffff8880b873bef8 R14: dffffc0000000000 R15: 1ffff110170e77e4
context_switch kernel/sched/core.c:5513 [inline]
__schedule+0x17e1/0x56c0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7326
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
ip_vs_estimation_kthread+0x29ef/0x3950 net/netfilter/ipvs/ip_vs_est.c:216
kthread+0x388/0x470 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: 13589 callbacks suppressed
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
net_ratelimit: 16880 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)
bridge0: received packet on vlan2 with own address as source address (addr:ea:a1:17:bf:a8:c8, vlan:1)