bridge0: received packet on bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P23307/1:b..l..
rcu: (detected by 0, t=10513 jiffies, g=109645, q=2473 ncpus=2)
task:syz.2.4565 state:R running task stack:26904 pid:23307 tgid:23299 ppid:17259 task_flags:0x400140 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7382
preempt_schedule_irq+0x4b/0x90 kernel/sched/core.c:7662
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:543 [inline]
irqentry_exit+0x14f/0x9b0 kernel/entry/common.c:154
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:unwind_next_frame+0xb14/0x2550 arch/x86/kernel/unwind_orc.c:610
Code: 85 26 14 00 00 48 89 dd 48 c1 ed 03 42 0f b6 44 25 00 84 c0 0f 85 3b 14 00 00 0f b6 72 01 83 e6 07 83 fe 04 0f 84 39 04 00 00 <83> fe 03 0f 84 f1 01 00 00 83 fe 02 0f 85 a2 07 00 00 48 89 5c 24
RSP: 0018:ffffc900049ef8c0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff92252fab RCX: ffffffff91a09184
RDX: ffffffff92252faa RSI: 0000000000000002 RDI: ffffffff8c6e0e20
RBP: 1ffffffff244a5f5 R08: ffffc900049efef0 R09: 0000000000000000
R10: ffffc900049ef9b8 R11: ffffffff81b30200 R12: dffffc0000000000
R13: ffffffff92252fa6 R14: ffffc900049ef968 R15: 1ffff9200093df2d
arch_stack_walk+0x11b/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0xa9/0x100 kernel/stacktrace.c:122
kasan_save_stack+0x3e/0x60 mm/kasan/common.c:57
kasan_record_aux_stack+0xbd/0xd0 mm/kasan/generic.c:556
__call_rcu_common kernel/rcu/tree.c:3287 [inline]
call_rcu+0x86/0x300 kernel/rcu/tree.c:3395
slab_free_hook mm/slub.c:2712 [inline]
slab_free mm/slub.c:6509 [inline]
kmem_cache_free+0x471/0x650 mm/slub.c:6636
fput_close_sync+0x11f/0x240 fs/file_table.c:618
filp_close_sync fs/open.c:1573 [inline]
__do_sys_close fs/open.c:1596 [inline]
__se_sys_close+0xa2/0x160 fs/open.c:1583
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: 0033:0x7fd9a935fd8e
RSP: 002b:00007fd9a75b3f68 EFLAGS: 00000246 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007fd9a75b46c0 RCX: 00007fd9a935fd8e
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000027
RBP: 000000000000003c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd9a75b46a8
R13: 000000000000000e R14: 00007fd9a9626270 R15: 00007fffefeb83f8
rcu: rcu_preempt kthread starved for 1976 jiffies! g109645 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:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5583 [inline]
__schedule+0x17dd/0x5820 kernel/sched/core.c:7382
__schedule_loop kernel/sched/core.c:7459 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7474
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x1230 kernel/rcu/tree.c:2122
rcu_gp_kthread+0x9c/0x340 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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 1284 Comm: kworker/u8:7 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x11/0xb0 kernel/rcu/tree.c:753
Code: 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 48 ff 05 5f 0f f0 12 5a d3 4a 0a 89 c3 83 f8 08 73 66 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc90000a08220 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffffc90000a082f8 RCX: ffff88802a18be80
RDX: ffffc90000a08301 RSI: dffffc0000000000 RDI: ffffc90000a082f0
RBP: 1ffffffff2572001 R08: ffffc900056076f0 R09: 0000000000000000
R10: ffffc90000a08338 R11: fffff52000141069 R12: ffffc90005600000
R13: ffffffff8178699f R14: ffffc90000a082e8 R15: ffffc90005607700
FS: 0000000000000000(0000) GS:ffff888123b52000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f25c4494fe8 CR3: 0000000074dc4000 CR4: 00000000003526f0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:878 [inline]
class_rcu_destructor include/linux/rcupdate.h:1216 [inline]
unwind_next_frame+0x1b66/0x2550 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
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+0x2b4/0x600 mm/slub.c:5010
__skb_ext_alloc net/core/skbuff.c:7246 [inline]
skb_ext_add+0x148/0x8e0 net/core/skbuff.c:7350
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:293 [inline]
br_handle_frame+0x1329/0x1600 net/bridge/br_input.c:453
__netif_receive_skb_core+0x989/0x30c0 net/core/dev.c:6292
__netif_receive_skb_one_core net/core/dev.c:6403 [inline]
__netif_receive_skb net/core/dev.c:6518 [inline]
process_backlog+0x727/0x18b0 net/core/dev.c:6869
__napi_poll+0xaa/0x330 net/core/dev.c:7938
napi_poll net/core/dev.c:8001 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:8158
handle_softirqs+0x265/0x8d0 kernel/softirq.c:669
do_softirq+0x77/0xd0 kernel/softirq.c:569
__local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473
spin_unlock_bh include/linux/spinlock.h:407 [inline]
cfg80211_inform_single_bss_data+0x1491/0x1be0 net/wireless/scan.c:2463
cfg80211_inform_bss_data+0x25b/0x3be0 net/wireless/scan.c:3303
cfg80211_inform_bss_frame_data+0x51a/0xae0 net/wireless/scan.c:3399
ieee80211_bss_info_update+0x772/0xa30 net/mac80211/scan.c:236
ieee80211_rx_bss_info net/mac80211/ibss.c:1065 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1546 [inline]
ieee80211_ibss_rx_queued_mgmt+0x1ce1/0x2c40 net/mac80211/ibss.c:1573
ieee80211_iface_process_skb net/mac80211/iface.c:1805 [inline]
ieee80211_iface_work+0x769/0xfa0 net/mac80211/iface.c:1859
cfg80211_wiphy_work+0x29e/0x420 net/wireless/core.c:610
process_one_work kernel/workqueue.c:3495 [inline]
process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3578
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3659
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: 28319 callbacks suppressed
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 veth1_to_bridge with own address as source address (addr:ba:8b:b8:35:1d:44, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:8b:b8:35:1d:44, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:8b:b8:35:1d:44, vlan:0)
bridge0: received packet on veth1_to_bridge with own address as source address (addr:ba:8b:b8:35:1d:44, 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 bridge_slave_1 with own address as source address (addr:aa:aa:aa:aa:aa:1c, 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 veth1_to_bridge with own address as source address (addr:ba:8b:b8:35:1d:44, vlan:0)