bridge0: received packet on veth0 with own address as source address (addr:aa:aa:aa:aa:aa:19, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9345/1:b..l
rcu: (detected by 1, t=10562 jiffies, g=37821, q=1888 ncpus=2)
task:syz.4.852 state:R running task stack:23200 pid:9345 tgid:9342 ppid:5629 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5520 [inline]
__schedule+0x17d4/0x5820 kernel/sched/core.c:7270
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7592
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x910 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:deref_stack_reg+0x1a2/0x220 arch/x86/kernel/unwind_orc.c:422
Code: 39 f0 0f 96 c0 20 c8 3c 01 75 30 4c 89 c7 49 89 f7 e8 12 07 00 00 49 89 c6 48 8b 5c 24 08 48 89 d8 48 c1 e8 03 42 80 3c 38 00 <74> 08 48 89 df e8 64 62 bf 00 4c 89 33 b0 01 eb 02 31 c0 48 83 c4
RSP: 0018:ffffc900033ae280 EFLAGS: 00000246
RAX: 1ffff92000675c81 RBX: ffffc900033ae408 RCX: 0000000000000001
RDX: ffffc900033ae408 RSI: dffffc0000000000 RDI: ffffc900033ae3b8
RBP: ffffc900033a8000 R08: ffffc900033ae3b8 R09: 0000000000000000
R10: ffffc900033ae418 R11: fffff52000675c85 R12: 1ffff92000675c7a
R13: 1ffff92000675c7b R14: ffffc900033ae450 R15: dffffc0000000000
unwind_next_frame+0x19bd/0x2550 arch/x86/kernel/unwind_orc.c:-1
__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
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:5815
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]
__kmalloc_cache_noprof+0x321/0x600 mm/slub.c:5563
_kmalloc_noprof include/linux/slab.h:991 [inline]
netdevice_queue_work drivers/infiniband/core/roce_gid_mgmt.c:663 [inline]
netdevice_event+0x3aa/0x8a0 drivers/infiniband/core/roce_gid_mgmt.c:822
notifier_call_chain+0x1a5/0x3d0 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2313 [inline]
call_netdevice_notifiers+0x90/0xd0 net/core/dev.c:2327
do_setlink+0xca9/0x4670 net/core/rtnetlink.c:3262
rtnl_group_changelink net/core/rtnetlink.c:3919 [inline]
__rtnl_newlink net/core/rtnetlink.c:4085 [inline]
rtnl_newlink+0x146f/0x1c30 net/core/rtnetlink.c:4215
rtnetlink_rcv_msg+0x802/0xc00 net/core/rtnetlink.c:7132
netlink_rcv_skb+0x226/0x4a0 net/netlink/af_netlink.c:2556
netlink_unicast_kernel net/netlink/af_netlink.c:1319 [inline]
netlink_unicast+0x7bd/0x940 net/netlink/af_netlink.c:1345
netlink_sendmsg+0x813/0xb40 net/netlink/af_netlink.c:1900
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_sendmmsg+0x273/0x4d0 net/socket.c:2856
__do_sys_sendmmsg net/socket.c:2883 [inline]
__se_sys_sendmmsg net/socket.c:2880 [inline]
__x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2880
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: 0033:0x7f5d4fd9e159
RSP: 002b:00007f5d50c00028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f5d50025fa0 RCX: 00007f5d4fd9e159
RDX: 040000000000009f RSI: 00002000000002c0 RDI: 0000000000000008
RBP: 00007f5d4fe35024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5d50026038 R14: 00007f5d50025fa0 R15: 00007ffd2ba45a88
rcu: rcu_preempt kthread starved for 1697 jiffies! g37821 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:5520 [inline]
__schedule+0x17d4/0x5820 kernel/sched/core.c:7270
__schedule_loop kernel/sched/core.c:7347 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7362
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: 6969 Comm: kworker/u8:22 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
Workqueue: krds_cp_wq#3/6 rds_connect_worker
RIP: 0010:on_stack arch/x86/include/asm/stacktrace.h:55 [inline]
RIP: 0010:stack_access_ok arch/x86/kernel/unwind_orc.c:409 [inline]
RIP: 0010:deref_stack_reg+0x31/0x220 arch/x86/kernel/unwind_orc.c:419
Code: 41 54 53 48 83 ec 10 48 89 d3 49 89 f0 49 89 ff 48 be 00 00 00 00 00 fc ff df 48 83 c7 08 49 89 fc 49 c1 ec 03 41 80 3c 34 00 <4c> 89 04 24 74 13 e8 e4 62 bf 00 4c 8b 04 24 48 be 00 00 00 00 00
RSP: 0018:ffffc90000006a98 EFLAGS: 00000246
RAX: fffffffffffffff0 RBX: ffffc90000006bc8 RCX: 0000000000000000
RDX: ffffc90000006bc8 RSI: dffffc0000000000 RDI: ffffc90000006b90
RBP: 1ffffffff222cc75 R08: ffffc90000006cc0 R09: 0000000000000000
R10: ffffc90000006bd8 R11: fffff52000000d7d R12: 1ffff92000000d72
R13: ffffffff911663ad R14: ffffc90000006b88 R15: ffffc90000006b88
FS: 0000000000000000(0000) GS:ffff888124ce0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe79c07ad21 CR3: 00000000775de000 CR4: 00000000003526f0
Call Trace:
unwind_next_frame+0x19bd/0x2550 arch/x86/kernel/unwind_orc.c:-1
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
kasan_save_free_info+0x40/0x50 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:2748 [inline]
slab_free mm/slub.c:6499 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6626
skb_ext_reset include/linux/skbuff.h:5142 [inline]
skb_release_head_state+0x274/0x370 net/core/skbuff.c:1189
skb_release_all net/core/skbuff.c:1195 [inline]
__kfree_skb+0x24/0x210 net/core/skbuff.c:1211
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
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:988
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+0x21f/0x3c0 include/linux/netfilter.h:323
__netif_receive_skb_one_core net/core/dev.c:6264 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
netif_receive_skb_internal net/core/dev.c:6463 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6522
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:325
br_handle_frame_finish+0x1136/0x1950 net/bridge/br_input.c:-1
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+0x127f/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6151
__netif_receive_skb_one_core net/core/dev.c:6262 [inline]
__netif_receive_skb net/core/dev.c:6377 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6728
__napi_poll+0xaa/0x330 net/core/dev.c:7787
napi_poll net/core/dev.c:7850 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8007
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:3387 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551
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