bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P7482/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=16401, q=1219 ncpus=2)
task:syz.2.461 state:R running task stack:25856 pid:7482 tgid:7476 ppid:5853 task_flags:0x400140 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:kasan_check_range+0x1b8/0x2a0 mm/kasan/generic.c:189
Code: 4d 01 fb 48 8d 5d 07 48 85 ed 48 0f 49 dd 48 83 e3 f8 48 29 dd 74 12 41 80 3b 00 0f 85 b3 00 00 00 49 ff c3 48 ff cd 75 ee 5b <41> 5c 41 5e 41 5f 5d c3 cc cc cc cc 40 84 ed 75 61 f7 c5 00 ff 00
RSP: 0018:ffffc90003f0f3a0 EFLAGS: 00000256
RAX: ffffc90003f0f601 RBX: 0000000000000010 RCX: ffffffff816e0656
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc90003f0f510
RBP: 0000000000000000 R08: ffffc90003f0f51f R09: 1ffff920007e1ea3
R10: dffffc0000000000 R11: fffff520007e1ea4 R12: ffffc90003f0f4c0
R13: ffffc90003f10000 R14: dffffc0000000001 R15: fffff520007e1ea4
__asan_memset+0x23/0x50 mm/kasan/shadow.c:84
unwind_next_frame+0xb46/0x23b0 arch/x86/kernel/unwind_orc.c:592
arch_stack_walk+0x11e/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
save_stack+0xfc/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x1e0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1262 [inline]
__free_frozen_pages+0xde8/0x10a0 mm/page_alloc.c:2680
discard_slab mm/slub.c:2720 [inline]
__put_partials+0x160/0x1c0 mm/slub.c:3189
put_cpu_partial+0x17e/0x250 mm/slub.c:3264
__slab_free+0x294/0x390 mm/slub.c:4516
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x23/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4151 [inline]
slab_alloc_node mm/slub.c:4200 [inline]
__do_kmalloc_node mm/slub.c:4330 [inline]
__kvmalloc_node_noprof+0x2ca/0x5a0 mm/slub.c:5016
netif_alloc_rx_queues net/core/dev.c:10737 [inline]
alloc_netdev_mqs+0xac6/0x1210 net/core/dev.c:11684
ip6gre_init_net+0xb7/0x390 net/ipv6/ip6_gre.c:1613
ops_init+0x349/0x5b0 net/core/net_namespace.c:138
setup_net+0x289/0x9f0 net/core/net_namespace.c:364
copy_net_ns+0x33f/0x570 net/core/net_namespace.c:518
create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
unshare_nsproxy_namespaces+0x124/0x180 kernel/nsproxy.c:228
ksys_unshare+0x5e2/0xad0 kernel/fork.c:3375
__do_sys_unshare kernel/fork.c:3446 [inline]
__se_sys_unshare kernel/fork.c:3444 [inline]
__x64_sys_unshare+0x38/0x40 kernel/fork.c:3444
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa12378d169
RSP: 002b:00007fa124618038 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fa1239a5fa0 RCX: 00007fa12378d169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000064000600
RBP: 00007fa12380e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa1239a5fa0 R15: 00007ffcdbe6cb08
rcu: rcu_preempt kthread starved for 9990 jiffies! g16401 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:26976 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
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: 3402 Comm: kworker/R-bat_e Not tainted 6.14.0-syzkaller-13311-g69ae94725f4f #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: bat_events batadv_tt_purge
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x2f/0x70 kernel/kcov.c:217
Code: 8b 04 24 65 48 8b 0c 25 08 a0 68 93 65 8b 15 d8 48 a5 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 <74> 2c 8b 91 18 16 00 00 83 fa 02 75 21 48 8b 91 20 16 00 00 48 8b
RSP: 0018:ffffc90000a073d8 EFLAGS: 00000246
RAX: ffffffff8ac9e443 RBX: 0000000000000100 RCX: ffff8880311c8000
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000100
RBP: ffffc90000a07558 R08: ffffffff8ac9e435 R09: ffffc90000a07690
R10: ffffc90000a074c0 R11: fffff52000140e9e R12: ffff8880780f1400
R13: 0000000000000100 R14: ffffc90000a07660 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff888125096000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f7f6fbce8 CR3: 0000000034b1a000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__find_rr_leaf+0x173/0x8f0 net/ipv6/route.c:838
find_rr_leaf net/ipv6/route.c:890 [inline]
rt6_select net/ipv6/route.c:934 [inline]
fib6_table_lookup+0x410/0xbf0 net/ipv6/route.c:2229
ip6_pol_route+0x26d/0x15f0 net/ipv6/route.c:2265
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x590/0x7a0 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2334 [inline]
ip6_route_input+0x85b/0xda0 net/ipv6/route.c:2630
ip6_rcv_finish+0x140/0x3d0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x203/0x290 net/bridge/br_netfilter_hooks.c:993
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc8/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29b/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5885 [inline]
__netif_receive_skb+0x1ef/0x670 net/core/dev.c:5998
netif_receive_skb_internal net/core/dev.c:6084 [inline]
netif_receive_skb+0x1ea/0x890 net/core/dev.c:6143
NF_HOOK+0xa0/0x410 include/linux/netfilter.h:314
br_handle_frame_finish+0x188d/0x1f60 net/bridge/br_input.c:226
br_nf_hook_thresh+0x482/0x5a0 net/bridge/br_netfilter_hooks.c:1170
br_nf_pre_routing_finish_ipv6+0xaa3/0xdd0 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x397/0x790 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0x9fa/0x1530 net/bridge/br_input.c:433
__netif_receive_skb_core+0x155a/0x4bb0 net/core/dev.c:5771
__netif_receive_skb_one_core net/core/dev.c:5883 [inline]
__netif_receive_skb+0x130/0x670 net/core/dev.c:5998
process_backlog+0x664/0x15c0 net/core/dev.c:6350
__napi_poll+0xcb/0x480 net/core/dev.c:7322
napi_poll net/core/dev.c:7386 [inline]
net_rx_action+0x89d/0x1240 net/core/dev.c:7508
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
do_softirq+0x11f/0x1e0 kernel/softirq.c:480
__local_bh_enable_ip+0x1be/0x200 kernel/softirq.c:407
spin_unlock_bh include/linux/spinlock.h:396 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2250 [inline]
batadv_tt_purge+0x4dd/0xa40 net/batman-adv/translation-table.c:3510
process_one_work kernel/workqueue.c:3238 [inline]
process_scheduled_works+0xac3/0x18e0 kernel/workqueue.c:3319
rescuer_thread+0x662/0x1020 kernel/workqueue.c:3496
kthread+0x7b7/0x940 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 21725 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:45:dd:ab:19:df, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:45:dd:ab:19:df, vlan:0)
net_ratelimit: 20060 callbacks suppressed
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:45:dd:ab:19:df, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:45:dd:ab:19:df, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:ba:45:dd:ab:19:df, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)