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): P10995/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=55617, q=1739 ncpus=2)
task:syz.3.1272 state:R running task stack:26472 pid:10995 tgid:10957 ppid:5848 task_flags:0x400040 flags:0x00080002
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1585/0x5340 kernel/sched/core.c:6907
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7234
irqentry_exit+0x599/0x620 kernel/entry/common.c:239
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x20b/0x2e0 kernel/locking/lockdep.c:5872
Code: e9 30 ff ff ff e8 65 c5 0b 0a f7 c3 00 02 00 00 0f 84 38 ff ff ff 65 48 8b 05 e1 42 7a 11 48 3b 44 24 30 75 33 fb 48 83 c4 38 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 c6 ab 0e 0a cc 48 8d 3d 9e 5b 73
RSP: 0018:ffffc9000497f578 EFLAGS: 00000286
RAX: 2a6a604af7285800 RBX: 0000000000000246 RCX: 0000000000000046
RDX: 000000002f5aa33a RSI: ffffffff8e162dda RDI: ffffffff8c27aa00
RBP: 0000000000000000 R08: ffffffff81767a45 R09: ffffffff8e7602e0
R10: ffffc9000497f6d8 R11: ffffffff81b0b120 R12: 0000000000000002
R13: ffffffff8e7602e0 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:312 [inline]
rcu_read_lock include/linux/rcupdate.h:850 [inline]
class_rcu_constructor include/linux/rcupdate.h:1193 [inline]
unwind_next_frame+0xc2/0x23c0 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
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:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4501 [inline]
kmem_cache_alloc_bulk_noprof+0x570/0x7e0 mm/slub.c:7247
__io_alloc_req_refill+0xb4/0x360 io_uring/io_uring.c:965
io_alloc_req io_uring/io_uring.h:508 [inline]
io_submit_sqes+0xfb0/0x2370 io_uring/io_uring.c:2032
__do_sys_io_uring_enter io_uring/io_uring.c:2603 [inline]
__se_sys_io_uring_enter+0x2cc/0x18c0 io_uring/io_uring.c:2538
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f828c79c799
RSP: 002b:00007f828d6ae028 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f828ca16270 RCX: 00007f828c79c799
RDX: 00000000000004c1 RSI: 0000000000003d0e RDI: 0000000000000005
RBP: 00007f828c832bd9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000020 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f828ca16308 R14: 00007f828ca16270 R15: 00007f828cb3fa48
rcu: rcu_preempt kthread starved for 328 jiffies! g55617 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:27664 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5295 [inline]
__schedule+0x1585/0x5340 kernel/sched/core.c:6907
__schedule_loop kernel/sched/core.c:6989 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7004
schedule_timeout+0x158/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x312/0x11d0 kernel/rcu/tree.c:2095
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2297
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 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: 3406 Comm: kworker/R-bat_e Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: bat_events batadv_tt_purge
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: 0018:ffffc90000a077b8 EFLAGS: 00000087
RAX: 0000000000000006 RBX: ffff888032db29a8 RCX: 0000000080000101
RDX: 0000000000000100 RSI: ffffffff8fbcc908 RDI: ffff888032db29a8
RBP: 00000000ffffffff R08: ffffc90000a07b40 R09: ffffc90000a07b50
R10: ffffc90000a079a0 R11: fffff52000140f36 R12: 0000000000000246
R13: ffff888032db1e40 R14: ffffffff8fbcc908 R15: 0000000000000002
FS: 0000000000000000(0000) GS:ffff888125564000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fae1c5f7ffc CR3: 00000000758a0000 CR4: 00000000003526f0
Call Trace:
__lock_is_held kernel/locking/lockdep.c:5601 [inline]
lock_is_held_type+0x89/0x150 kernel/locking/lockdep.c:5940
lock_is_held include/linux/lockdep.h:249 [inline]
lockdep_rtnl_is_held+0x1b/0x40 net/core/rtnetlink.c:182
__in6_dev_get include/net/addrconf.h:348 [inline]
ip6_ignore_linkdown+0x4f/0x140 include/net/addrconf.h:449
find_match+0x9c/0xb40 net/ipv6/route.c:780
__find_rr_leaf+0x248/0x760 net/ipv6/route.c:868
find_rr_leaf net/ipv6/route.c:889 [inline]
rt6_select net/ipv6/route.c:933 [inline]
fib6_table_lookup+0x3b4/0xa80 net/ipv6/route.c:2246
ip6_pol_route+0x228/0x13d0 net/ipv6/route.c:2282
pol_lookup_func include/net/ip6_fib.h:617 [inline]
fib6_rule_lookup+0x556/0x730 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2351 [inline]
ip6_route_input+0x730/0xad0 net/ipv6/route.c:2654
ip6_rcv_finish+0x141/0x2e0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:990
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_slow+0xc5/0x220 net/netfilter/core.c:623
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:6167 [inline]
__netif_receive_skb net/core/dev.c:6280 [inline]
netif_receive_skb_internal net/core/dev.c:6366 [inline]
netif_receive_skb+0x278/0xc50 net/core/dev.c:6425
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:319
br_handle_frame_finish+0x14b2/0x1b40 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+0xa3a/0xd70 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x374/0x6f0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:158 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:291 [inline]
br_handle_frame+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x31a0 net/core/dev.c:6054
__netif_receive_skb_one_core net/core/dev.c:6165 [inline]
__netif_receive_skb net/core/dev.c:6280 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6631
__napi_poll+0xae/0x340 net/core/dev.c:7695
napi_poll net/core/dev.c:7758 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7910
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:395 [inline]
batadv_tt_global_purge net/batman-adv/translation-table.c:2250 [inline]
batadv_tt_purge+0x4d1/0x9e0 net/batman-adv/translation-table.c:3510
process_one_work kernel/workqueue.c:3275 [inline]
process_scheduled_works+0xb02/0x1830 kernel/workqueue.c:3358
rescuer_thread+0x824/0x1120 kernel/workqueue.c:3582
kthread+0x388/0x470 kernel/kthread.c:467
ret_from_fork+0x51e/0xb90 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 15205 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: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:da:2f:a8:19:a8:bf, 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:1b, 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:da:2f:a8:19:a8:bf, vlan:0)