bridge0: received packet on veth1_to_bridge with own address as source address (addr:de:ee:05:aa:25:cd, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P25518/1:b..l P23977/1:b..l P32108/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=340873, q=2194 ncpus=2)
task:syz.7.16450 state:R running task stack:23192 pid:32108 tgid:32107 ppid:23554 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x7f/0x3c0 kernel/locking/lockdep.c:5881
Code: a6 92 8e 0e 00 0f 84 1c 02 00 00 65 8b 05 69 70 96 11 85 c0 0f 85 0d 02 00 00 65 4c 8b 3d b1 2a 96 11 41 83 bf 8c 0b 00 00 00 <0f> 85 f7 01 00 00 49 81 3e 80 d3 fb 93 0f 84 ea 01 00 00 9c 5b fa
RSP: 0018:ffffc900062a64d0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffffff916b1201 RCX: 0000000080000001
RDX: ffffc900062a6601 RSI: ffffffff8c28b8c0 RDI: ffffffff8c28b880
RBP: dffffc0000000000 R08: ffffc900062a6c28 R09: 0000000000000000
R10: ffffc900062a6658 R11: fffff52000c54ccd R12: ffffc900062a6c38
R13: ffffffff8176e256 R14: ffffffff8e95cc20 R15: ffff88804703be00
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
class_rcu_destructor include/linux/rcupdate.h:1181 [inline]
unwind_next_frame+0x1bba/0x2550 arch/x86/kernel/unwind_orc.c:709
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:1397 [inline]
__free_frozen_pages+0xc1c/0xd30 mm/page_alloc.c:2938
__slab_free+0x274/0x2c0 mm/slub.c:5613
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:4570 [inline]
slab_alloc_node mm/slub.c:4899 [inline]
kmem_cache_alloc_node_noprof+0x384/0x690 mm/slub.c:4951
kmalloc_reserve net/core/skbuff.c:613 [inline]
__alloc_skb+0x27d/0x7d0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1385 [inline]
alloc_uevent_skb+0x7d/0x230 lib/kobject_uevent.c:289
uevent_net_broadcast_tagged lib/kobject_uevent.c:352 [inline]
kobject_uevent_net_broadcast+0x184/0x560 lib/kobject_uevent.c:415
kobject_uevent_env+0x55c/0x9e0 lib/kobject_uevent.c:611
rx_queue_add_kobject net/core/net-sysfs.c:1265 [inline]
net_rx_queue_update_kobjects+0x3e5/0x740 net/core/net-sysfs.c:1307
register_queue_kobjects net/core/net-sysfs.c:2099 [inline]
netdev_register_kobject+0x21f/0x310 net/core/net-sysfs.c:2347
register_netdevice+0x1456/0x1ec0 net/core/dev.c:11423
bond_newlink+0x48/0xd0 drivers/net/bonding/bond_netlink.c:614
rtnl_newlink_create+0x329/0xb70 net/core/rtnetlink.c:3864
__rtnl_newlink net/core/rtnetlink.c:3995 [inline]
rtnl_newlink+0x166a/0x1bb0 net/core/rtnetlink.c:4110
rtnetlink_rcv_msg+0x7d5/0xbe0 net/core/rtnetlink.c:6997
netlink_rcv_skb+0x232/0x4b0 net/netlink/af_netlink.c:2555
netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
netlink_unicast+0x75c/0x8e0 net/netlink/af_netlink.c:1344
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1899
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
____sys_sendmsg+0x972/0x9f0 net/socket.c:2698
___sys_sendmsg+0x2a5/0x360 net/socket.c:2752
__sys_sendmsg net/socket.c:2784 [inline]
__do_sys_sendmsg net/socket.c:2789 [inline]
__se_sys_sendmsg net/socket.c:2787 [inline]
__x64_sys_sendmsg+0x1bd/0x2a0 net/socket.c:2787
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: 0033:0x7f1d3f79ce59
RSP: 002b:00007f1d405ed028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1d3fa15fa0 RCX: 00007f1d3f79ce59
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000000000000005
RBP: 00007f1d3f832d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1d3fa16038 R14: 00007f1d3fa15fa0 R15: 00007ffee17da838
task:kworker/0:2 state:R running task stack:28584 pid:23977 tgid:23977 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events ovs_dp_masks_rebalance
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__preempt_count_add kernel/rcu/tree.c:748 [inline]
RIP: 0010:rcu_is_watching+0x8/0xb0 kernel/rcu/tree.c:751
Code: 3f 44 03 eb cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 41 56 <53> 65 ff 05 30 33 8d 11 e8 cb c4 fc 09 89 c3 83 f8 08 73 65 49 bf
RSP: 0018:ffffc90005867738 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffff888096615d00
RDX: 0000000000000000 RSI: 0000000000001000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff823c8d4a R09: ffffffff8e95cc20
R10: dffffc0000000000 R11: ffffed100f849530 R12: 0000000000066648
R13: dffffc0000000000 R14: ffff88813febe190 R15: 0000000000001000
rcu_read_lock_held_common kernel/rcu/update.c:109 [inline]
rcu_read_lock_held+0x15/0x50 kernel/rcu/update.c:349
lookup_page_ext mm/page_ext.c:258 [inline]
page_ext_lookup+0xe7/0x180 mm/page_ext.c:513
page_ext_iter_begin include/linux/page_ext.h:133 [inline]
__page_table_check_zero+0x135/0x3e0 mm/page_table_check.c:139
page_table_check_free include/linux/page_table_check.h:46 [inline]
__free_pages_prepare mm/page_alloc.c:1398 [inline]
__free_frozen_pages+0xc2c/0xd30 mm/page_alloc.c:2938
__slab_free+0x274/0x2c0 mm/slub.c:5613
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_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5296 [inline]
__kmalloc_noprof+0x35c/0x760 mm/slub.c:5308
kmalloc_noprof include/linux/slab.h:954 [inline]
ovs_flow_masks_rebalance+0xf9/0xc30 net/openvswitch/flow_table.c:1112
ovs_dp_masks_rebalance+0x56/0xe0 net/openvswitch/datapath.c:2594
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
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
task:syz-executor state:R running task stack:22304 pid:25518 tgid:25518 ppid:25511 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7513
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8b0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 31 cf 05 0a f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 0b 5a 96 11 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 18 ed 91
RSP: 0018:ffffc90006c57c68 EFLAGS: 00000282
RAX: 6f3379454a7a0d00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 00000000deb59bf7 RSI: ffffffff8e217368 RDI: ffffffff8c28b8e0
RBP: ffffffff8249dcd6 R08: ffffffff8249dcd6 R09: ffffffff8e95cc20
R10: dffffc0000000000 R11: fffffbfff206069f R12: 0000000000000002
R13: ffffffff8e95cc20 R14: 0000000000000000 R15: 0000000000000246
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
__d_lookup+0x83/0x780 fs/dcache.c:2512
d_lookup+0x48/0xa0 fs/dcache.c:2461
lookup_dcache fs/namei.c:1763 [inline]
lookup_one_qstr_excl+0x30/0x360 fs/namei.c:1792
__start_dirop fs/namei.c:2916 [inline]
start_dirop fs/namei.c:2938 [inline]
filename_unlinkat+0x2ba/0x610 fs/namei.c:5549
__do_sys_unlink fs/namei.c:5603 [inline]
__se_sys_unlink+0x2e/0x140 fs/namei.c:5600
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: 0033:0x7fdf6559bf47
RSP: 002b:00007fff5e4c2548 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fdf6559bf47
RDX: 00007fff5e4c2570 RSI: 00007fff5e4c2600 RDI: 00007fff5e4c2600
RBP: 00007fff5e4c2600 R08: 00007fff5e4c3600 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007fff5e4c3690
R13: 00007fdf656321ca R14: 00000000001cced7 R15: 00007fff5e4c36d0
rcu: rcu_preempt kthread starved for 760 jiffies! g340873 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:27536 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1821/0x5740 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31346 Comm: kworker/u8:43 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Workqueue: krds_cp_wq#28/2 rds_connect_worker
RIP: 0010:__lock_acquire+0x99/0x2cf0 kernel/locking/lockdep.c:5111
Code: c8 89 4c 24 10 8b 0d 86 bb a1 18 85 c9 0f 95 c0 83 fe 08 0f 92 c2 08 c2 0f 84 49 01 00 00 83 fe 01 77 0c 89 f0 49 8b 44 c1 08 <48> 85 c0 75 21 31 ed 4c 89 cf 31 d2 4c 89 cb e8 f3 f0 ff ff 48 85
RSP: 0018:ffffc90000a08430 EFLAGS: 00000097
RAX: ffffffff93e0d8e8 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000000 RDI: ffffffff8e95cc20
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8e95cc20
R10: ffffc90000a08798 R11: fffff520001410f5 R12: 0000000000000002
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8881253a0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f117a872780 CR3: 0000000086ee6000 CR4: 00000000003526f0
Call Trace:
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:838 [inline]
class_rcu_constructor include/linux/rcupdate.h:1181 [inline]
unwind_next_frame+0xc3/0x2550 arch/x86/kernel/unwind_orc.c:495
__unwind_start+0x5b8/0x760 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
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2689 [inline]
slab_free mm/slub.c:6251 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6378
kfree_skb_reason include/linux/skbuff.h:1324 [inline]
ip_rcv_core+0x53f/0xd80 net/ipv4/ip_input.c:595
ip_rcv+0x4d/0x90 net/ipv4/ip_input.c:608
__netif_receive_skb_one_core net/core/dev.c:6202 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0xaa3/0x1950 net/core/dev.c:6666
__napi_poll+0xae/0x340 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7953
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
lock_sock include/net/sock.h:1713 [inline]
__inet6_bind+0x30c/0xf60 net/ipv6/af_inet6.c:292
kernel_bind+0x13e/0x1c0 net/socket.c:3660
rds_tcp_conn_path_connect+0x53e/0x930 net/rds/tcp_connect.c:175
rds_connect_worker+0x1d8/0x290 net/rds/threads.c:176
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xb5d/0x1860 kernel/workqueue.c:3397
worker_thread+0xa53/0xfc0 kernel/workqueue.c:3478
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
ip6_tunnel: ip6tnl1 xmit: Local address not yet configured!
net_ratelimit: 10383 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:1c, 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:de:ee:05:aa:25:cd, 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:1c, 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:de:ee:05:aa:25:cd, 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:1c, vlan:0)