bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P23807/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=106617, q=1320 ncpus=2)
task:syz.2.4217 state:R running task stack:27496 pid:23807 tgid:23806 ppid:18810 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_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: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 46 da
RSP: 0018:ffffc900069f7220 EFLAGS: 00000292
RAX: 341e9ee27c918f00 RBX: 0000000000000000 RCX: 0000000000000046
RDX: 0000000052d29ef6 RSI: ffffffff8e6f1ddb RDI: ffffffff8c6ddb80
RBP: ffff88802f8c1f40 R08: ffffffff817811df R09: 0000000000000000
R10: ffffc900069f7358 R11: ffffffff81b2c5e0 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
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]
__do_kmalloc_node mm/slub.c:5414 [inline]
__kmalloc_node_noprof+0x4b9/0x720 mm/slub.c:5426
_kmalloc_node_noprof include/linux/slab.h:1200 [inline]
__vmalloc_area_node mm/vmalloc.c:3893 [inline]
__vmalloc_node_range_noprof+0x5b4/0x1540 mm/vmalloc.c:4104
__vmalloc_node_noprof mm/vmalloc.c:4165 [inline]
__vmalloc_noprof+0xd2/0x120 mm/vmalloc.c:4181
bpf_prog_alloc_no_stats+0x47/0x560 kernel/bpf/core.c:108
bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:158
bpf_prog_load+0x7f8/0x1c20 kernel/bpf/syscall.c:3059
__sys_bpf+0xd0d/0xd90 kernel/bpf/syscall.c:6387
__do_sys_bpf kernel/bpf/syscall.c:6506 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6503 [inline]
__x64_sys_bpf+0xba/0xd0 kernel/bpf/syscall.c:6503
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: 0033:0x7f2ea5f9f559
RSP: 002b:00007f2ea6da7028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f2ea6225fa0 RCX: 00007f2ea5f9f559
RDX: 0000000000000048 RSI: 0000200000000240 RDI: 0000000000000005
RBP: 00007f2ea6036b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ea6226038 R14: 00007f2ea6225fa0 R15: 00007ffd575f29c8
rcu: rcu_preempt kthread starved for 457 jiffies! g106617 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: 6346 Comm: kworker/u8:13 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026
Workqueue: krds_cp_wq#1/3 rds_connect_worker
RIP: 0010:rol32 include/linux/bitops.h:126 [inline]
RIP: 0010:jhash2 include/linux/jhash.h:129 [inline]
RIP: 0010:hash_stack lib/stackdepot.c:571 [inline]
RIP: 0010:stack_depot_save_flags+0x8a/0x7f0 lib/stackdepot.c:672
Code: 72 7c 89 e8 89 e9 4c 89 f2 03 0a 03 42 04 03 6a 08 89 ef c1 c7 04 29 e9 31 cf 01 c5 29 f8 41 89 f8 41 c1 c0 06 41 31 c0 01 ef <45> 89 c1 41 c1 c1 08 44 29 c5 41 31 e9 41 01 f8 44 29 cf 44 89 c9
RSP: 0018:ffffc90000006808 EFLAGS: 00000217
RAX: 000000003d461502 RBX: 0000000000000000 RCX: 0000000092fb8ba7
RDX: ffffc9000000695c RSI: 000000000000000d RDI: 0000000005c9d674
RBP: 00000000f59e7c47 R08: 0000000037909e46 R09: 00000000d9c95661
R10: 0000000000000026 R11: ffffffff81b2c5e0 R12: ffff888064f30f00
R13: 0000000000000000 R14: ffffc90000006860 R15: ffffc90000006860
FS: 0000000000000000(0000) GS:ffff888123abd000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2ea41b3ff8 CR3: 0000000077784000 CR4: 00000000003526f0
Call Trace:
kasan_save_stack mm/kasan/common.c:58 [inline]
kasan_save_track+0x4f/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:6509 [inline]
kmem_cache_free+0x182/0x650 mm/slub.c:6636
skb_ext_del include/linux/skbuff.h:5116 [inline]
nf_bridge_info_free net/bridge/br_netfilter_hooks.c:157 [inline]
br_nf_dev_queue_xmit+0x4f6/0x25c0 net/bridge/br_netfilter_hooks.c:856
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
deliver_clone net/bridge/br_forward.c:131 [inline]
maybe_deliver net/bridge/br_forward.c:191 [inline]
br_flood+0x3e3/0x8d0 net/bridge/br_forward.c:245
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
net_ratelimit: 12116 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:1)
net_ratelimit: 15993 callbacks suppressed
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:a2:0b:11:cf:18:c7, vlan:1)