net_ratelimit: 4 callbacks suppressed
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): P31024/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=161513, q=597740 ncpus=2)
task:syz-executor state:R running task stack:22856 pid:31024 tgid:31024 ppid:31021 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7552
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:trace_lock_acquire include/trace/events/lock.h:23 [inline]
RIP: 0010:lock_acquire+0x58/0x350 kernel/locking/lockdep.c:5831
Code: 8b 05 bc 7f 98 11 48 89 44 24 58 0f 1f 44 00 00 65 8b 05 bf 7f 98 11 83 f8 08 0f 83 83 01 00 00 89 c0 48 0f a3 05 68 56 8f 0e <73> 0d e8 51 29 09 00 84 c0 0f 84 ca 01 00 00 83 3d 62 89 8f 0e 00
RSP: 0018:ffffc9000399f480 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e959a20
RBP: ffffffff8176a21f R08: 0000000000000000 R09: 0000000000000000
R10: ffffc9000399f618 R11: ffffffff81b10630 R12: 0000000000000002
R13: ffffffff8e959a20 R14: 0000000000000000 R15: 0000000000000000
rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
rcu_read_lock include/linux/rcupdate.h:840 [inline]
class_rcu_constructor include/linux/rcupdate.h:1183 [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
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:4610 [inline]
slab_alloc_node mm/slub.c:4939 [inline]
kmem_cache_alloc_noprof+0x2b8/0x650 mm/slub.c:4946
copy_signal+0x50/0x650 kernel/fork.c:1722
copy_process+0x1dfb/0x42e0 kernel/fork.c:2284
kernel_clone+0x2d7/0x940 kernel/fork.c:2745
__do_sys_clone kernel/fork.c:2886 [inline]
__se_sys_clone kernel/fork.c:2870 [inline]
__x64_sys_clone+0x1b6/0x230 kernel/fork.c:2870
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: 0033:0x7f915a1c58d2
RSP: 002b:00007ffe4aa59d60 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007ffe4aa59d60 RCX: 00007f915a1c58d2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 00007ffe4aa59eec R08: 0000000000000000 R09: 0000000000000001
R10: 00005555726eb7d0 R11: 0000000000000246 R12: 0000000000000001
R13: 00000000000927c0 R14: 00000000000b788d R15: 00007ffe4aa59f40
rcu: rcu_preempt kthread starved for 1259 jiffies! g161513 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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:28408 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5504 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7228
__schedule_loop kernel/sched/core.c:7307 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7322
schedule_timeout+0x152/0x2c0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x30c/0x11f0 kernel/rcu/tree.c:2123
rcu_gp_kthread+0x9e/0x2b0 kernel/rcu/tree.c:2325
kthread+0x388/0x470 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:
CPU: 0 UID: 0 PID: 6831 Comm: syz.1.9300 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:dev_queue_xmit_nit+0x560/0xac0 net/core/dev.c:2558
Code: 48 c1 e8 03 42 0f b6 04 38 84 c0 4c 89 fd 0f 85 c0 01 00 00 41 0f b6 45 00 24 f8 0c 04 41 88 45 00 4d 8d 7e c0 4c 8b 6c 24 08 <4c> 89 f0 48 c1 e8 03 80 3c 28 00 74 08 4c 89 f7 e8 fb 6e b7 f8 4d
RSP: 0018:ffffc90000006e18 EFLAGS: 00000202
RAX: 0000000000000064 RBX: ffff8881a69f0336 RCX: ffff888027d65d00
RDX: 0000000000000100 RSI: 0000000000000132 RDI: ffff8881a69f0338
RBP: dffffc0000000000 R08: ffff8881a72ff8e3 R09: 1ffff11034e5ff1c
R10: dffffc0000000000 R11: ffffed1034e5ff1d R12: ffff8881a69f0280
R13: ffff88807d3780c8 R14: ffff888094c3e980 R15: ffff888094c3e940
FS: 00007fabb6a546c0(0000) GS:ffff88812527c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000114030 CR3: 0000000050bde000 CR4: 00000000003526f0
Call Trace:
xmit_one net/core/dev.c:3885 [inline]
dev_hard_start_xmit+0x1c1/0x830 net/core/dev.c:3905
__dev_queue_xmit+0x1435/0x37f0 net/core/dev.c:4872
dev_queue_xmit include/linux/netdevice.h:3436 [inline]
neigh_hh_output include/net/neighbour.h:544 [inline]
neigh_output include/net/neighbour.h:558 [inline]
ip_finish_output2+0xbda/0x10b0 net/ipv4/ip_output.c:236
NF_HOOK_COND include/linux/netfilter.h:307 [inline]
ip_output+0x29f/0x450 net/ipv4/ip_output.c:437
synproxy_send_client_synack+0x89b/0xde0 net/netfilter/nf_synproxy_core.c:487
nft_synproxy_eval_v4+0x37b/0x530 net/netfilter/nft_synproxy.c:60
nft_synproxy_do_eval+0x335/0x550 net/netfilter/nft_synproxy.c:142
expr_call_ops_eval net/netfilter/nf_tables_core.c:237 [inline]
nft_do_chain+0x48d/0x1b10 net/netfilter/nf_tables_core.c:285
nft_do_chain_inet+0x360/0x4b0 net/netfilter/nft_chain_filter.c:162
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
NF_HOOK+0x336/0x3c0 include/linux/netfilter.h:318
__netif_receive_skb_one_core net/core/dev.c:6206 [inline]
__netif_receive_skb net/core/dev.c:6319 [inline]
process_backlog+0xa34/0x1860 net/core/dev.c:6670
__napi_poll+0xaa/0x330 net/core/dev.c:7729
napi_poll net/core/dev.c:7792 [inline]
net_rx_action+0x61d/0xf50 net/core/dev.c:7949
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
lock_sock include/net/sock.h:1713 [inline]
sctp_recvmsg+0x16c/0xcd0 net/sctp/socket.c:2118
sock_recvmsg_nosec+0xee/0x140 net/socket.c:1128
____sys_recvmsg+0x3e3/0x4a0 net/socket.c:2902
___sys_recvmsg+0x213/0x5a0 net/socket.c:2946
do_recvmmsg+0x31a/0x7f0 net/socket.c:3041
__sys_recvmmsg net/socket.c:3115 [inline]
__do_sys_recvmmsg net/socket.c:3138 [inline]
__se_sys_recvmmsg net/socket.c:3131 [inline]
__x64_sys_recvmmsg+0x198/0x250 net/socket.c:3131
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: 0033:0x7fabb5b9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabb6a54028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fabb5e16090 RCX: 00007fabb5b9ce59
RDX: 00000000040000f6 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fabb5c32e6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000102 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fabb5e16128 R14: 00007fabb5e16090 R15: 00007fffec5de768