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)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11607/1:b..l P9519/1:b..l
rcu: (detected by 1, t=10516 jiffies, g=259473, q=2240 ncpus=2)
task:syz-executor state:R running task stack:21760 pid:9519 tgid:9519 ppid:1 task_flags:0x40054c flags:0x00080003
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_read_unlock include/linux/rwlock_api_smp.h:256 [inline]
_raw_read_unlock+0x41/0x50 kernel/locking/spinlock.c:295
zap_pid_ns_processes+0x2b5/0x5f0 kernel/pid_namespace.c:233
find_child_reaper kernel/exit.c:634 [inline]
forget_original_parent kernel/exit.c:718 [inline]
exit_notify kernel/exit.c:755 [inline]
do_exit+0x1fd8/0x2360 kernel/exit.c:998
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: 0033:0x7f1b3e95ea0e
RSP: 002b:00007fff555f4f98 EFLAGS: 00000246 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 0000555578c1d500 RCX: 00007f1b3e95ea0e
RDX: 00007fff555f4ff0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fff555f505c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000001388
R13: 00000000000927c0 R14: 0000000000185874 R15: 00007fff555f50b0
task:syz.6.9307 state:R running task stack:27968 pid:11607 tgid:11604 ppid:9519 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5533 [inline]
__schedule+0x17db/0x58f0 kernel/sched/core.c:7284
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7606
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x920 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__orc_find arch/x86/kernel/unwind_orc.c:88 [inline]
RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:238 [inline]
RIP: 0010:unwind_next_frame+0x28b/0x2550 arch/x86/kernel/unwind_orc.c:510
Code: 49 bc 00 00 00 00 00 fc ff df 84 c0 0f 85 03 04 00 00 45 39 e8 0f 84 07 04 00 00 4a 8d 14 ad f4 86 8d 91 45 29 e8 4e 8d 24 82 <49> 83 c4 fc 49 89 d5 4c 39 e2 0f 86 22 02 00 00 49 29 d5 49 c1 fd
RSP: 0018:ffffc900063d7600 EFLAGS: 00000206
RAX: ffffffff9220cb00 RBX: dffffc0000000000 RCX: 8000000000000000
RDX: ffffffff919d35cc RSI: ffffffff9220cb80 RDI: ffffffff8c6dd820
RBP: ffffffff8238bdf1 R08: 0000000000000014 R09: 0000000000000000
R10: ffffc900063d76f8 R11: ffffffff81b2c4a0 R12: ffffffff919d361c
R13: 000000000003ebb6 R14: ffffc900063d76a8 R15: 00000000000138bd
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:183
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:338
reset_page_owner include/linux/page_owner.h:26 [inline]
__free_pages_prepare mm/page_alloc.c:1418 [inline]
__free_frozen_pages+0xc93/0xd90 mm/page_alloc.c:2962
__slab_free+0x274/0x2c0 mm/slub.c:5823
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:417
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563
_kmalloc_noprof include/linux/slab.h:991 [inline]
_kzalloc_noprof include/linux/slab.h:1312 [inline]
ref_tracker_alloc+0x15b/0x4b0 lib/ref_tracker.c:270
__netns_tracker_alloc include/net/net_namespace.h:370 [inline]
netns_tracker_alloc include/net/net_namespace.h:379 [inline]
get_net_track+0x16e/0x230 include/net/net_namespace.h:396
sk_alloc+0x1da/0x390 net/core/sock.c:2325
__netlink_create+0x62/0x260 net/netlink/af_netlink.c:627
netlink_create+0x3ca/0x590 net/netlink/af_netlink.c:685
__sock_create+0x4b3/0x9d0 net/socket.c:1676
sock_create net/socket.c:1734 [inline]
__sys_socket_create net/socket.c:1771 [inline]
__sys_socket+0xd6/0x1b0 net/socket.c:1818
__do_sys_socket net/socket.c:1832 [inline]
__se_sys_socket net/socket.c:1830 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1830
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: 0033:0x7f1b3e99e1d9
RSP: 002b:00007f1b3f90a028 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f1b3ec26180 RCX: 00007f1b3e99e1d9
RDX: 000000000000000c RSI: 0000000000000003 RDI: 0000000000000010
RBP: 00007f1b3ea35888 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1b3ec26218 R14: 00007f1b3ec26180 R15: 00007fff555f4cb8
rcu: rcu_preempt kthread starved for 1195 jiffies! g259473 f0x0 RCU_GP_WAIT_FQS(5) ->state=R ->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: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:
CPU: 1 UID: 0 PID: 9492 Comm: kworker/u8:26 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: krds_cp_wq#5/1 rds_connect_worker
RIP: 0010:lock_acquire+0x232/0x350 kernel/locking/lockdep.c:5947
Code: ff ff ff e8 20 2e 45 0a f7 44 24 10 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 82 a8 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 37 44 da
RSP: 0018:ffffc90000a18200 EFLAGS: 00000296
RAX: e0204c1658938700 RBX: 0000000000000000 RCX: 8000000000000101
RDX: 00000000e61b7dd1 RSI: ffffffff8e6f16e9 RDI: ffffffff8c6dd880
RBP: ffff888037363e80 R08: ffffffff817811df R09: 0000000000000000
R10: ffffc90000a18338 R11: ffffffff81b2c4a0 R12: ffffffff8fd5c8a0
R13: 0000000000000002 R14: 0000000000000000 R15: 0000000000000246
FS: 0000000000000000(0000) GS:ffff888123bbf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555591173a38 CR3: 000000007e638000 CR4: 00000000003526f0
Call Trace:
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
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
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_ext_alloc net/core/skbuff.c:7156 [inline]
skb_ext_add+0x148/0x8e0 net/core/skbuff.c:7260
nf_bridge_alloc include/net/netfilter/br_netfilter.h:12 [inline]
br_nf_pre_routing_ipv6+0x134/0x6f0 net/bridge/br_netfilter_ipv6.c:171
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
bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)