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)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P14658/1:b..l
rcu: (detected by 1, t=10543 jiffies, g=302965, q=1376 ncpus=2)
task:syz-executor state:R running task stack:22552 pid:14658 tgid:14658 ppid:1 task_flags:0x40054c flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_common+0x7f/0xd0 kernel/sched/core.c:7463
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+0x18e/0x240 kernel/exit.c:592
do_exit+0x6cd/0x2360 kernel/exit.c:974
do_group_exit+0x22d/0x2f0 kernel/exit.c:1129
get_signal+0x121b/0x12c0 kernel/signal.c:3112
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]
do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdab9b5e9ce
RSP: 002b:00007ffdf2c99668 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: 0000000000000000 RBX: 000055558ee12500 RCX: 00007fdab9b5e9ce
RDX: 00007ffdf2c996c0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffdf2c9972c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000000000b
R13: 000000000000005e R14: 00000000001c0194 R15: 00007ffdf2c99780
rcu: rcu_preempt kthread starved for 513 jiffies! g302965 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: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: 30702 Comm: kworker/u8:31 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: krds_cp_wq#14/7 rds_connect_worker
RIP: 0010:timekeeping_cycles_to_ns kernel/time/timekeeping.c:465 [inline]
RIP: 0010:timekeeping_get_ns kernel/time/timekeeping.c:482 [inline]
RIP: 0010:ktime_get_update_offsets_now+0xf0/0x3e0 kernel/time/timekeeping.c:2859
Code: 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 ef e8 82 cc 82 00 4d 21 f5 48 8b 6d 00 4c 89 ef 48 89 ee e8 00 cc 12 00 <49> 39 ed 0f 87 5d 01 00 00 8b 05 a1 b2 ec 18 4c 0f af e8 4c 03 2d
RSP: 0018:ffffc90000006030 EFLAGS: 00000002
RAX: ffffffff81b534e0 RBX: 0000000000061656 RCX: ffff88807eb10000
RDX: 8000000001000301 RSI: 000001fb63109b96 RDI: 00000000013e5903
RBP: 000001fb63109b96 R08: 0000000001000101 R09: 0000000000000001
R10: dffffc0000000000 R11: fffff52000000c00 R12: dffffc0000000000
R13: 00000000013e5903 R14: ffffffffffffffff R15: 000001e0868babdb
FS: 0000000000000000(0000) GS:ffff888124cda000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f13aa27ffeb CR3: 000000001eeaa000 CR4: 00000000003526f0
Call Trace:
hrtimer_update_base kernel/time/hrtimer.c:686 [inline]
hrtimer_interrupt+0x189/0xaa0 kernel/time/hrtimer.c:2233
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1051 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1068
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:stack_trace_consume_entry+0xe1/0x280 kernel/stacktrace.c:93
Code: 85 4d 85 00 49 89 d9 4c 8b 04 24 4c 89 e2 4c 89 ff 48 8b 74 24 08 48 8b 1f 45 8d 79 01 0f b6 44 15 00 84 c0 0f 85 3a 01 00 00 <45> 89 38 4e 8d 3c cb 4c 89 f8 48 c1 e8 03 80 3c 10 00 74 1a 4c 89
RSP: 0018:ffffc900000062d8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000006460 RCX: 8000000000000300
RDX: dffffc0000000000 RSI: ffffffff8ab36c70 RDI: ffffc900000063e0
RBP: 1ffff92000000c7e R08: ffffc900000063f0 R09: 0000000000000009
R10: ffffc90000006378 R11: ffffffff81b2b310 R12: 0000000000000000
R13: 1ffff92000000c7d R14: ffffc900000063e8 R15: 000000000000000a
arch_stack_walk+0x10f/0x150 arch/x86/kernel/stacktrace.c:27
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_reset include/linux/skbuff.h:5136 [inline]
skb_scrub_packet+0x2c8/0x3d0 net/core/skbuff.c:6301
____dev_forward_skb include/linux/netdevice.h:4488 [inline]
__dev_forward_skb2+0x28c/0x730 net/core/dev.c:2504
veth_forward_skb drivers/net/veth.c:324 [inline]
veth_xmit+0x493/0xe60 drivers/net/veth.c:380
__netdev_start_xmit include/linux/netdevice.h:5433 [inline]
netdev_start_xmit include/linux/netdevice.h:5442 [inline]
xmit_one net/core/dev.c:3991 [inline]
dev_hard_start_xmit+0x2cd/0x830 net/core/dev.c:4007
__dev_queue_xmit+0x14d1/0x3920 net/core/dev.c:4996
dev_queue_xmit include/linux/netdevice.h:3462 [inline]
br_dev_queue_push_xmit+0x370/0x4b0 net/bridge/br_forward.c:67
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
br_flood+0x402/0x650 net/bridge/br_forward.c:352
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+0x77/0xd0 kernel/softirq.c:546
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
lock_sock include/net/sock.h:1715 [inline]
__inet6_bind+0x301/0xf30 net/ipv6/af_inet6.c:292
kernel_bind+0x13e/0x1c0 net/socket.c:3677
rds_tcp_conn_path_connect+0x53b/0x920 net/rds/tcp_connect.c:175
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3396 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3479
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3560
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
ip6_tunnel: ip6erspan1 xmit: Local address not yet configured!
net_ratelimit: 8750 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 veth1_to_bridge with own address as source address (addr:ee:46:2e:73:81:39, 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 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 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:ee:46:2e:73:81:39, vlan:0)
net_ratelimit: 14074 callbacks suppressed