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): P18732/1:b..l P5372/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=104669, q=1534 ncpus=2)
task:crond state:R running task stack:24392 pid:5372 tgid:5372 ppid:1 task_flags:0x400000 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
preempt_schedule_notrace+0x57/0x90 kernel/sched/core.c:7463
preempt_schedule_notrace_thunk+0x16/0x30 arch/x86/entry/thunk.S:13
rcu_is_watching+0x7f/0xb0 kernel/rcu/tree.c:753
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0x5f/0x350 kernel/locking/lockdep.c:5831
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+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: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+0xc0d/0xd20 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_noprof+0x2b8/0x650 mm/slub.c:4906
alloc_empty_file+0x5b/0x1d0 fs/file_table.c:262
path_openat+0x10f/0x3890 fs/namei.c:4844
do_file_open+0x23e/0x4a0 fs/namei.c:4887
do_sys_openat2+0x113/0x200 fs/open.c:1364
do_sys_open fs/open.c:1370 [inline]
__do_sys_openat fs/open.c:1386 [inline]
__se_sys_openat fs/open.c:1381 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1381
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: 0033:0x7f2b046f9c3a
RSP: 002b:00007fffe0a86758 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000564b3953a2a0 RCX: 00007f2b046f9c3a
RDX: 0000000000080000 RSI: 00007f2b0479645a RDI: 00000000ffffff9c
RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000206 R12: 00007f2b047947f4
R13: 00007f2b047947f4 R14: 0000000000000001 R15: 0000000000000034
task:syz.0.3323 state:R running task stack:26104 pid:18732 tgid:18729 ppid:15819 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 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/0x8e0 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5893
Code: 3f 95 11 00 00 00 00 eb b5 e8 35 df 00 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 35 fa 94 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 9a da 03 0a cc 48 8d 3d b2 74 91
RSP: 0018:ffffc9000dfaf348 EFLAGS: 00000286
RAX: 9a71f5a8a6e2e400 RBX: 0000000000000202 RCX: 0000000000000046
RDX: 0000000000000000 RSI: ffffffff8e213d22 RDI: ffffffff8c2899a0
RBP: ffff888032f4e890 R08: ffffc9000dfafab8 R09: 0000000000000000
R10: ffffc9000dfaf478 R11: fffff52001bf5e91 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8e95c780 R15: ffff888032f4dd00
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+0x1baa/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
poison_kmalloc_redzone mm/kasan/common.c:398 [inline]
__kasan_kmalloc+0x93/0xb0 mm/kasan/common.c:415
kasan_kmalloc include/linux/kasan.h:263 [inline]
__kmalloc_cache_node_noprof+0x3dd/0x690 mm/slub.c:5432
kmalloc_node_noprof include/linux/slab.h:1077 [inline]
__get_vm_area_node+0x136/0x300 mm/vmalloc.c:3215
__vmalloc_node_range_noprof+0x358/0x1730 mm/vmalloc.c:4024
__vmalloc_node_noprof mm/vmalloc.c:4124 [inline]
__vmalloc_noprof+0xd2/0x120 mm/vmalloc.c:4140
bpf_prog_alloc_no_stats+0x47/0x4f0 kernel/bpf/core.c:106
bpf_prog_alloc+0x3c/0x1a0 kernel/bpf/core.c:155
bpf_prog_load+0x788/0x1a10 kernel/bpf/syscall.c:2986
__sys_bpf+0x618/0x950 kernel/bpf/syscall.c:6274
__do_sys_bpf kernel/bpf/syscall.c:6387 [inline]
__se_sys_bpf kernel/bpf/syscall.c:6385 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:6385
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: 0033:0x7fbdc819ce59
RSP: 002b:00007fbdc63d5028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fbdc8416180 RCX: 00007fbdc819ce59
RDX: 0000000000000094 RSI: 00002000000003c0 RDI: 0000000000000005
RBP: 00007fbdc8232d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fbdc8416218 R14: 00007fbdc8416180 R15: 00007fff5872c9f8
rcu: rcu_preempt kthread starved for 3472 jiffies! g104669 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:27816 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5388 [inline]
__schedule+0x1840/0x57a0 kernel/sched/core.c:7189
__schedule_loop kernel/sched/core.c:7268 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7283
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 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: 82 Comm: kworker/u8:5 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:match_held_lock+0x3/0xb0 kernel/locking/lockdep.c:5305
Code: b9 3a 90 31 db 48 89 d8 5b 41 5e 41 5f c3 cc cc cc cc cc 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 41 56 53 01 00 00 00 48 39 77 10 74 6a 81 7f 20 00 00 20 00 72 5f 48 8b
RSP: 0000:ffffc90000a073b8 EFLAGS: 00000006
RAX: 000000000000000a RBX: 000000000000002d RCX: 0000000080010103
RDX: 0000000000010100 RSI: ffff8880b8728298 RDI: ffff88801d792bf8
RBP: ffff88801d792bf8 R08: ffff888037231327 R09: 0000000000000000
R10: ffff888037231318 R11: ffffed1006e46265 R12: 0000000000000009
R13: 0000000000000009 R14: ffff8880b8728298 R15: ffff88801d791f00
FS: 0000000000000000(0000) GS:ffff8881253b9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4fa182f656 CR3: 00000000758fa000 CR4: 00000000003526f0
Call Trace:
find_held_lock kernel/locking/lockdep.c:5350 [inline]
__lock_release kernel/locking/lockdep.c:5535 [inline]
lock_release+0x10c/0x3c0 kernel/locking/lockdep.c:5889
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:176 [inline]
_raw_spin_unlock_irqrestore+0x1b/0x80 kernel/locking/spinlock.c:198
__run_hrtimer kernel/time/hrtimer.c:1926 [inline]
__hrtimer_run_queues+0x2bf/0xa10 kernel/time/hrtimer.c:1994
hrtimer_interrupt+0x448/0x910 kernel/time/hrtimer.c:2113
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
__sysvec_apic_timer_interrupt+0x102/0x430 arch/x86/kernel/apic/apic.c:1067
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2e/0x70 kernel/kcov.c:217
Code: 48 8b 04 24 65 48 8b 0d c8 2f 71 11 65 8b 15 e9 2f 71 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 ec 16 00 00 00 <74> 2c 8b 91 c8 16 00 00 83 fa 02 75 21 48 8b 91 d0 16 00 00 48 8b
RSP: 0000:ffffc90000a07738 EFLAGS: 00000246
RAX: ffffffff8a528bf1 RBX: 0000000000000001 RCX: ffff88801d791f00
RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90000a07898 R08: ffffc90000a079c0 R09: ffffc90000a079d0
R10: ffffc90000a07820 R11: fffff52000140f06 R12: 1ffff11006c6780c
R13: dffffc0000000000 R14: ffff88807adc8000 R15: ffffc90000a07998
__find_rr_leaf+0x361/0x760 net/ipv6/route.c:836
find_rr_leaf net/ipv6/route.c:892 [inline]
rt6_select net/ipv6/route.c:936 [inline]
fib6_table_lookup+0x3c6/0xae0 net/ipv6/route.c:2254
ip6_pol_route+0x228/0x13d0 net/ipv6/route.c:2290
pol_lookup_func include/net/ip6_fib.h:669 [inline]
__fib6_rule_action net/ipv6/fib6_rules.c:240 [inline]
fib6_rule_action+0x9d7/0xc00 net/ipv6/fib6_rules.c:278
fib_rules_lookup+0x770/0xeb0 net/core/fib_rules.c:340
fib6_rule_lookup+0x1a0/0x730 net/ipv6/fib6_rules.c:115
ip6_route_input_lookup net/ipv6/route.c:2359 [inline]
ip6_route_input+0x78d/0xb20 net/ipv6/route.c:2662
ip6_rcv_finish+0x141/0x280 net/ipv6/ip6_input.c:117
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:988
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:619
nf_hook include/linux/netfilter.h:273 [inline]
NF_HOOK+0x21f/0x3c0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:6202 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
netif_receive_skb_internal net/core/dev.c:6401 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6460
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
br_handle_frame_finish+0x1115/0x1930 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:318 [inline]
br_nf_pre_routing_ipv6+0x382/0x6f0 net/bridge/br_netfilter_ipv6.c:183
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1272/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6089
__netif_receive_skb_one_core net/core/dev.c:6200 [inline]
__netif_receive_skb net/core/dev.c:6315 [inline]
process_backlog+0x706/0x1860 net/core/dev.c:6666
__napi_poll+0xaa/0x330 net/core/dev.c:7733
napi_poll net/core/dev.c:7796 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7953
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
local_bh_enable include/linux/bottom_half.h:33 [inline]
__alloc_skb+0x1ad/0x7a0 net/core/skbuff.c:697
alloc_skb include/linux/skbuff.h:1385 [inline]
nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:819 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:876 [inline]
nsim_dev_trap_report_work+0x25f/0xb40 drivers/net/netdevsim/dev.c:922
process_one_work kernel/workqueue.c:3314 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3397
worker_thread+0xa47/0xfb0 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