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:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11762
rcu: (detected by 0, t=10503 jiffies, g=47957, q=91990 ncpus=2)
task:syz.3.1568 state:R running task stack:24176 pid:11762 tgid:11762 ppid:5631 task_flags:0x400040 flags:0x00080012
Call Trace:
sched_show_task+0x4aa/0x5f0 kernel/sched/core.c:8140
rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:292 [inline]
print_other_cpu_stall+0xf7d/0x1310 kernel/rcu/tree_stall.h:681
check_cpu_stall kernel/rcu/tree_stall.h:856 [inline]
rcu_pending kernel/rcu/tree.c:3679 [inline]
rcu_sched_clock_irq+0x93d/0x1050 kernel/rcu/tree.c:2716
update_process_times+0x23b/0x2f0 kernel/time/timer.c:2475
tick_sched_handle kernel/time/tick-sched.c:298 [inline]
tick_nohz_handler+0x3fb/0x730 kernel/time/tick-sched.c:319
__run_hrtimer kernel/time/hrtimer.c:1930 [inline]
__hrtimer_run_queues+0x371/0xa10 kernel/time/hrtimer.c:1994
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2113
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2868 [inline]
RIP: 0010:pskb_may_pull include/linux/skbuff.h:2883 [inline]
RIP: 0010:ip_mc_may_pull include/linux/igmp.h:110 [inline]
RIP: 0010:ip_mc_check_igmp_csum net/ipv4/igmp.c:1692 [inline]
RIP: 0010:ip_mc_check_igmp+0x777/0x19e0 net/ipv4/igmp.c:1731
Code: 84 c0 0f 85 68 0e 00 00 41 89 df 44 2b 3a 44 89 e7 44 89 fe e8 1a bb a2 f7 44 89 e5 44 29 fd 44 8b 74 24 64 0f 87 90 08 00 00 44 b9 a2 f7 0f b7 44 24 46 8b 4c 24 60 66 c1 c0 08 0f b7 f0 44
RSP: 0018:ffffc90000006cf0 EFLAGS: 00000246
RAX: ffffffff8a2286d6 RBX: 000000000000001c RCX: 0000000000000100
RDX: ffff888028a88000 RSI: 000000000000001c RDI: 000000000000001c
RBP: 0000000000000000 R08: ffff888028a88000 R09: 0000000000000002
R10: 000000000000dd86 R11: 0000000000000100 R12: 000000000000001c
R13: 0000000000000024 R14: 0000000000000024 R15: 000000000000001c
br_multicast_ipv4_rcv net/bridge/br_multicast.c:3881 [inline]
br_multicast_rcv+0x564/0x77c0 net/bridge/br_multicast.c:4030
br_handle_frame_finish+0x775/0x1930 net/bridge/br_input.c:156
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_pre_routing_finish+0x138a/0x1a10 net/bridge/br_netfilter_hooks.c:430
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:318
br_nf_pre_routing+0xec2/0x14b0 net/bridge/br_netfilter_hooks.c:539
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1272/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6666
__napi_poll+0xaa/0x330 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7953
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
nl80211_netlink_notify+0x46b/0x840 net/wireless/nl80211.c:22551
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
netlink_release+0x11f8/0x1aa0 net/netlink/af_netlink.c:761
__sock_release net/socket.c:722 [inline]
sock_close+0xad/0x220 net/socket.c:1515
__fput+0x418/0xa50 fs/file_table.c:510
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x193/0x6b0 kernel/entry/common.c:98
__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:318 [inline]
do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabd359ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd56486858 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fabd3817da0 RCX: 00007fabd359ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fabd3817da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007fabd3817cb0 R11: 0000000000000246 R12: 00000000000464d0
R13: 00007fabd381609c R14: 00000000000461cf R15: 00007fabd3816090
rcu: rcu_preempt kthread starved for 1308 jiffies! g47957 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:27696 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x389/0x470 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:
CPU: 0 UID: 0 PID: 11762 Comm: syz.3.1568 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:pskb_may_pull_reason include/linux/skbuff.h:2868 [inline]
RIP: 0010:pskb_may_pull include/linux/skbuff.h:2883 [inline]
RIP: 0010:ip_mc_may_pull include/linux/igmp.h:110 [inline]
RIP: 0010:ip_mc_check_igmp_csum net/ipv4/igmp.c:1692 [inline]
RIP: 0010:ip_mc_check_igmp+0x777/0x19e0 net/ipv4/igmp.c:1731
Code: 84 c0 0f 85 68 0e 00 00 41 89 df 44 2b 3a 44 89 e7 44 89 fe e8 1a bb a2 f7 44 89 e5 44 29 fd 44 8b 74 24 64 0f 87 90 08 00 00 44 b9 a2 f7 0f b7 44 24 46 8b 4c 24 60 66 c1 c0 08 0f b7 f0 44
RSP: 0018:ffffc90000006cf0 EFLAGS: 00000246
RAX: ffffffff8a2286d6 RBX: 000000000000001c RCX: 0000000000000100
RDX: ffff888028a88000 RSI: 000000000000001c RDI: 000000000000001c
RBP: 0000000000000000 R08: ffff888028a88000 R09: 0000000000000002
R10: 000000000000dd86 R11: 0000000000000100 R12: 000000000000001c
R13: 0000000000000024 R14: 0000000000000024 R15: 000000000000001c
FS: 000055557df70500(0000) GS:ffff8881252b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f975ba06fe8 CR3: 0000000038760000 CR4: 00000000003526f0
Call Trace:
br_multicast_ipv4_rcv net/bridge/br_multicast.c:3881 [inline]
br_multicast_rcv+0x564/0x77c0 net/bridge/br_multicast.c:4030
br_handle_frame_finish+0x775/0x1930 net/bridge/br_input.c:156
br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1165 [inline]
br_nf_pre_routing_finish+0x138a/0x1a10 net/bridge/br_netfilter_hooks.c:430
NF_HOOK+0x64e/0x6e0 include/linux/netfilter.h:318
br_nf_pre_routing+0xec2/0x14b0 net/bridge/br_netfilter_hooks.c:539
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1272/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6666
__napi_poll+0xaa/0x330 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7953
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
nl80211_netlink_notify+0x46b/0x840 net/wireless/nl80211.c:22551
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
netlink_release+0x11f8/0x1aa0 net/netlink/af_netlink.c:761
__sock_release net/socket.c:722 [inline]
sock_close+0xad/0x220 net/socket.c:1515
__fput+0x418/0xa50 fs/file_table.c:510
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0x193/0x6b0 kernel/entry/common.c:98
__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:318 [inline]
do_syscall_64+0x353/0x580 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabd359ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd56486858 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007fabd3817da0 RCX: 00007fabd359ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fabd3817da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00007fabd3817cb0 R11: 0000000000000246 R12: 00000000000464d0
R13: 00007fabd381609c R14: 00000000000461cf R15: 00007fabd3816090
net_ratelimit: 1954 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 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:72:2b:e9:e2:6b:1f, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, 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:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, 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:1c, vlan:0)
net_ratelimit: 3175 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:72:2b:e9:e2:6b:1f, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, 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:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, 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:1c, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:72:2b:e9:e2:6b:1f, vlan:0)