bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P17893/1:b..l
rcu: (detected by 1, t=10502 jiffies, g=84205, q=1785 ncpus=2)
task:syz.3.3051 state:R running task stack:26792 pid:17893 tgid:17892 ppid:5613 task_flags:0x40044c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7277
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7456
preempt_schedule_thunk+0x16/0x40 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:201 [inline]
_raw_spin_unlock+0x41/0x50 kernel/locking/spinlock.c:213
spin_unlock include/linux/spinlock.h:401 [inline]
zap_pte_range mm/memory.c:2095 [inline]
zap_pmd_range mm/memory.c:2151 [inline]
zap_pud_range mm/memory.c:2179 [inline]
zap_p4d_range mm/memory.c:2200 [inline]
__zap_vma_range+0x40e1/0x4f80 mm/memory.c:2240
unmap_vmas+0x390/0x550 mm/memory.c:2309
exit_mmap+0x293/0x9f0 mm/mmap.c:1315
__mmput+0x118/0x420 kernel/fork.c:1193
exit_mm+0x221/0x2d0 kernel/exit.c:617
do_exit+0x6cd/0x2360 kernel/exit.c:999
do_group_exit+0x22d/0x2f0 kernel/exit.c:1154
get_signal+0x121b/0x12c0 kernel/signal.c:3051
arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:66 [inline]
exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:343 [inline]
ret_from_fork+0x593/0xb70 arch/x86/kernel/process.c:167
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: rcu_preempt kthread starved for 243 jiffies! g84205 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:27496 pid:17 tgid:17 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5526 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7277
__schedule_loop kernel/sched/core.c:7354 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7369
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: 8438 Comm: ipvs-e:4:0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__sanitizer_cov_trace_switch+0x24/0x110 kernel/kcov.c:330
Code: 90 90 90 90 90 90 f3 0f 1e fa 48 8b 46 08 48 8d 48 ff 48 89 c2 48 31 ca 48 39 ca 0f 86 e6 00 00 00 f3 48 0f bc c8 48 83 c1 fd <48> 83 f9 03 0f 87 d3 00 00 00 48 8b 06 48 85 c0 0f 84 c7 00 00 00
RSP: 0018:ffffc90000006998 EFLAGS: 00000257
RAX: 0000000000000008 RBX: fffff52000000d3c RCX: 0000000000000000
RDX: 000000000000000f RSI: ffffffff9037f4c0 RDI: 0000000000000000
RBP: ffffc90000006e90 R08: ffffc90000006d3f R09: 0000000000000000
R10: ffffc90000006cf0 R11: fffff52000000da8 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff88807730b60c
FS: 0000000000000000(0000) GS:ffff888124cce000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555688ab9f8 CR3: 0000000076f18000 CR4: 00000000003526f0
Call Trace:
rt6_multipath_hash+0x178/0x19b0 net/ipv6/route.c:2542
ip6_route_input+0x954/0xb20 net/ipv6/route.c:2664
ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:988
nf_hook_entry_hookfn include/linux/netfilter.h:165 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:323
__netif_receive_skb_one_core net/core/dev.c:6264 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
netif_receive_skb_internal net/core/dev.c:6463 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6522
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:325
br_handle_frame_finish+0x1136/0x1950 net/bridge/br_input.c:-1
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:291 [inline]
br_handle_frame+0x1329/0x1600 net/bridge/br_input.c:451
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6151
__netif_receive_skb_one_core net/core/dev.c:6262 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6728
__napi_poll+0xaa/0x330 net/core/dev.c:7787
napi_poll net/core/dev.c:7850 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8007
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:schedule_debug kernel/sched/core.c:6095 [inline]
RIP: 0010:__schedule+0x18d/0x58f0 kernel/sched/core.c:7126
Code: 74 08 48 89 df e8 13 4c 51 f6 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 fa 4b 51 f6 48 81 3b 9d 6e ac 57 <0f> 85 51 1d 00 00 45 85 e4 7f 4c 48 8b 44 24 08 48 8d 58 18 48 89
RSP: 0018:ffffc9000b347840 EFLAGS: 00000246
RAX: 1ffff92001668000 RBX: ffffc9000b340000 RCX: 8000000000000001
RDX: 0000000000000000 RSI: ffffffff8c6da060 RDI: ffffffff8c6da020
RBP: ffffc9000b347a38 R08: ffffffff907a417f R09: 1ffffffff20f482f
R10: dffffc0000000000 R11: fffffbfff20f4830 R12: 0000000000000000
R13: dffffc0000000000 R14: 1ffff92001668f2c R15: ffff888124cce000
__schedule_loop kernel/sched/core.c:7354 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7369
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+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: 12845 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:0a:ab:23:93:7d:90, vlan:0)