bridge0: received packet on veth1_to_bridge with own address as source address (addr:ae:5c:16:c6:83:b7, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ae:5c:16:c6:83:b7, vlan:0)
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
ip6_tunnel: ip6gre1 xmit: Local address not yet configured!
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5601/1:b..l
rcu: (detected by 1, t=10664 jiffies, g=211585, q=1904 ncpus=2)
task:syz.1.7196 state:R running task stack:23176 pid:5601 tgid:5596 ppid:29317 task_flags:0x400140 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
__local_bh_enable_ip+0xe9/0x140 kernel/softirq.c:480
spin_unlock_bh include/linux/spinlock.h:407 [inline]
__fib6_clean_all+0x4a3/0x5d0 net/ipv6/ip6_fib.c:2326
rt6_sync_up+0x136/0x180 net/ipv6/route.c:4943
addrconf_notify+0xd3f/0x1050 net/ipv6/addrconf.c:3778
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
netif_state_change+0x27d/0x3a0 net/core/dev.c:1625
do_setlink+0x3c57/0x4670 net/core/rtnetlink.c:3518
rtnl_group_changelink net/core/rtnetlink.c:3924 [inline]
__rtnl_newlink net/core/rtnetlink.c:4090 [inline]
rtnl_newlink+0x146f/0x1c30 net/core/rtnetlink.c:4220
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7137
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2579
netlink_unicast_kernel net/netlink/af_netlink.c:1338 [inline]
netlink_unicast+0x8ef/0xa80 net/netlink/af_netlink.c:1364
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1923
sock_sendmsg_nosec+0x13a/0x180 net/socket.c:800
__sock_sendmsg net/socket.c:815 [inline]
____sys_sendmsg+0x54e/0x850 net/socket.c:2713
___sys_sendmsg+0x2a5/0x360 net/socket.c:2767
__sys_sendmsg net/socket.c:2799 [inline]
__do_sys_sendmsg net/socket.c:2804 [inline]
__se_sys_sendmsg net/socket.c:2802 [inline]
__x64_sys_sendmsg+0x1b1/0x290 net/socket.c:2802
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: 0033:0x7fae7f39f559
RSP: 002b:00007fae7d5b4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007fae7f626180 RCX: 00007fae7f39f559
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000046
RBP: 00007fae7f436b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fae7f626218 R14: 00007fae7f626180 R15: 00007ffe9daa7208
rcu: rcu_preempt kthread starved for 7353 jiffies! g211585 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: 24998 Comm: kworker/u8:29 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: krds_cp_wq#14/6 rds_connect_worker
RIP: 0010:__irq_exit_rcu+0x26/0x220 kernel/softirq.c:751
Code: 90 90 90 90 41 57 41 56 53 9c 58 fa a9 00 02 00 00 74 05 e8 1c 45 47 00 65 48 8b 1d dc 13 0d 13 48 89 df 31 f6 e8 6a 9c 13 00 00 00 00 01 e8 80 f1 0b 00 65 48 8b 05 c8 13 0d 13 a9 00 ff 00
RSP: 0018:ffffc90000006198 EFLAGS: 00000006
RAX: 1ffff1101708484d RBX: ffff88803ec55dc0 RCX: 8000000001000301
RDX: 8000000001000301 RSI: ffffffff8c0c83a0 RDI: ffffffff8c6ddb80
RBP: 0000000000000000 R08: 0000000001000101 R09: 1ffffffff22f4ecf
R10: dffffc0000000000 R11: fffffbfff22f4ed0 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff888123abd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f26cb09f950 CR3: 000000008772e000 CR4: 00000000003526f0
Call Trace:
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+0x57/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 30 7d 45 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 42 c7 f2 12 48 3b 44 24 50 75 33 fb 48 83 c4 58 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d f7 47 da
RSP: 0018:ffffc90000006288 EFLAGS: 00000286
RAX: a0fd0dbae980bb00 RBX: 0000000000000000 RCX: 8000000000000301
RDX: 0000000017d187d3 RSI: ffffffff8e6f2265 RDI: ffffffff8c6ddb80
RBP: ffff88803ec55dc0 R08: ffffffff817811df R09: 0000000000000000
R10: ffffc900000063c8 R11: fffff52000000c85 R12: ffffffff8fd5c8e0
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
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
__unwind_start+0x514/0x660 arch/x86/kernel/unwind_orc.c:787
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe3/0x150 arch/x86/kernel/stacktrace.c:24
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:351 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:377
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
skb_clone+0x212/0x3a0 net/core/skbuff.c:2119
dev_queue_xmit_nit+0x28d/0xac0 net/core/dev.c:2600
xmit_one net/core/dev.c:3949 [inline]
dev_hard_start_xmit+0x1c1/0x830 net/core/dev.c:3969
__dev_queue_xmit+0x14d1/0x3920 net/core/dev.c:4958
dev_queue_xmit include/linux/netdevice.h:3469 [inline]
br_dev_queue_push_xmit+0x370/0x4b0 net/bridge/br_forward.c:53
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:619
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:66
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:619
nf_hook include/linux/netfilter.h:280 [inline]
NF_HOOK+0x23e/0x3f0 include/linux/netfilter.h:323
__br_forward+0x397/0x540 net/bridge/br_forward.c:115
br_handle_frame_finish+0x1119/0x1950 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: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:6184
__netif_receive_skb_one_core net/core/dev.c:6295 [inline]
__netif_receive_skb net/core/dev.c:6410 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6761
__napi_poll+0xaa/0x330 net/core/dev.c:7830
napi_poll net/core/dev.c:7893 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8050
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
__inet6_bind+0x386/0xf30 net/ipv6/af_inet6.c:419
kernel_bind+0x13e/0x1c0 net/socket.c:3675
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
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 24998 Comm: kworker/u8:29 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: krds_cp_wq#14/6 rds_connect_worker
RIP: 0010:check_slab_allocation mm/kasan/common.c:245 [inline]
RIP: 0010:__kasan_slab_pre_free+0xec/0x120 mm/kasan/common.c:272
Code: 00 00 ff c9 41 0f af c8 48 01 ce 48 39 f0 77 03 48 89 c6 e8 d6 32 f4 ff 4c 39 f0 75 15 4c 89 f7 e8 29 1f 00 00 ba 02 00 00 00 <84> c0 74 09 31 c0 eb 12 ba 01 00 00 00 4c 89 f7 48 89 de e8 2c 0b
RSP: 0018:ffffc900000079b8 EFLAGS: 00000293
RAX: 0000000000000001 RBX: ffffffff8a8ebf38 RCX: 0000000000000dc0
RDX: 0000000000000002 RSI: ffff88819d0de280 RDI: 1ffff11033a1bc50
RBP: 0000000001432110 R08: 0000000000000140 R09: 1ffffffff22f4ecf
R10: dffffc0000000000 R11: fffffbfff22f4ed0 R12: ffffea0000000000
R13: 0000000000000000 R14: ffff88819d0de280 R15: ffff888020abc8c0
FS: 0000000000000000(0000) GS:ffff888123abd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f26cb09f950 CR3: 000000008772e000 CR4: 00000000003526f0
Call Trace:
kasan_slab_pre_free include/linux/kasan.h:199 [inline]
slab_free_hook mm/slub.c:2693 [inline]
slab_free mm/slub.c:6509 [inline]
kmem_cache_free+0x130/0x650 mm/slub.c:6636
kfree_skb_reason include/linux/skbuff.h:1323 [inline]
kfree_skb include/linux/skbuff.h:1332 [inline]
ip6_mc_input+0x878/0xc80 net/ipv6/ip6_input.c:639
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:325
__netif_receive_skb_one_core net/core/dev.c:6297 [inline]
__netif_receive_skb net/core/dev.c:6410 [inline]
process_backlog+0x795/0x18b0 net/core/dev.c:6761
__napi_poll+0xaa/0x330 net/core/dev.c:7830
napi_poll net/core/dev.c:7893 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8050
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:1713 [inline]
__inet6_bind+0x301/0xf30 net/ipv6/af_inet6.c:292
kernel_bind+0x13e/0x1c0 net/socket.c:3675
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