bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P16698/1:b..l P5184/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=107233, q=745 ncpus=2)
task:klogd state:R running task stack:23288 pid:5184 tgid:5184 ppid:1 task_flags:0x400100 flags:0x00080800
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7507
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:unwind_next_frame+0xf2c/0x2550 arch/x86/kernel/unwind_orc.c:621
Code: 24 58 80 3c 28 00 48 8b 5c 24 78 4c 8b 64 24 18 74 08 48 89 df e8 64 b8 ba 00 4c 89 23 ba 10 00 00 00 48 8b 5c 24 28 48 89 df <31> f6 e8 2d ba ba 00 48 8b 3c 24 e9 d0 04 00 00 4c 89 64 24 18 4d
RSP: 0018:ffffc90002f372b8 EFLAGS: 00000246
RAX: 1ffff920005e6e78 RBX: ffffc90002f373d8 RCX: 1ffff920005e6e01
RDX: 0000000000000010 RSI: 0000000000000002 RDI: ffffc90002f373d8
RBP: dffffc0000000000 R08: 000000000000000e R09: ffffffff8e95d020
R10: ffffc90002f373d8 R11: ffffffff81b0a9b0 R12: ffffc90002f377d8
R13: 1ffff920005e6e73 R14: ffffc90002f37388 R15: ffffc90002f373d0
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:1433 [inline]
__free_frozen_pages+0xc2b/0xdb0 mm/page_alloc.c:2978
__slab_free+0x263/0x2b0 mm/slub.c:5573
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x100 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_kmalloc+0x22/0xb0 mm/kasan/common.c:406
kasan_kmalloc include/linux/kasan.h:263 [inline]
__do_kmalloc_node mm/slub.c:5260 [inline]
__kmalloc_node_track_caller_noprof+0x4db/0x7b0 mm/slub.c:5368
kmalloc_reserve net/core/skbuff.c:635 [inline]
__alloc_skb+0x2c1/0x7d0 net/core/skbuff.c:713
alloc_skb include/linux/skbuff.h:1383 [inline]
alloc_skb_with_frags+0xca/0x890 net/core/skbuff.c:6734
sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:2998
unix_dgram_sendmsg+0x460/0x18d0 net/unix/af_unix.c:2141
sock_sendmsg_nosec net/socket.c:787 [inline]
__sock_sendmsg net/socket.c:802 [inline]
__sys_sendto+0x672/0x710 net/socket.c:2265
__do_sys_sendto net/socket.c:2272 [inline]
__se_sys_sendto net/socket.c:2268 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2268
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7628f22407
RSP: 002b:00007fff472bb030 EFLAGS: 00000202 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f7628dd2c80 RCX: 00007f7628f22407
RDX: 00000000000000a1 RSI: 00007fff472bb170 RDI: 0000000000000003
RBP: 00007fff472bb5a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000202 R12: 00007fff472bb5b8
R13: 00007fff472bb170 R14: 0000000000000086 R15: 00007fff472bb170
task:syz-executor state:R running task stack:21672 pid:16698 tgid:16698 ppid:16680 task_flags:0x400140 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
preempt_schedule_common+0x82/0xd0 kernel/sched/core.c:7364
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:169 [inline]
_raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:190
spin_unlock include/linux/spinlock.h:390 [inline]
__d_lookup+0x624/0x780 fs/dcache.c:2463
lookup_fast+0x84/0x5b0 fs/namei.c:1873
walk_component fs/namei.c:2274 [inline]
link_path_walk+0x720/0x18d0 fs/namei.c:2652
path_openat+0x2c3/0x3860 fs/namei.c:4854
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+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8ba9d9bb3c
RSP: 002b:00007fff02d87a70 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000000028d RCX: 00007f8ba9d9bb3c
RDX: 0000000000090800 RSI: 00007f8ba9e325d3 RDI: 00000000ffffff9c
RBP: 00007fff02d87b1c R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 00000000000000cc
R13: 0000000000000000 R14: 00000000000859dc R15: 00007fff02d87b70
rcu: rcu_preempt kthread starved for 5706 jiffies! g107233 f0x0 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:27544 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x17b4/0x5680 kernel/sched/core.c:7183
__schedule_loop kernel/sched/core.c:7262 [inline]
schedule+0x164/0x360 kernel/sched/core.c:7277
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: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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 18582 Comm: kworker/R-bond1 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Workqueue: 0x0 (bond1)
RIP: 0010:asm_sysvec_apic_timer_interrupt+0x0/0x20 arch/x86/include/asm/idtentry.h:697
Code: c6 e9 b2 0a e9 81 06 00 00 90 f3 0f 1e fa 0f 01 ca fc 6a ff e8 31 05 00 00 48 89 c4 48 89 e7 e8 d6 e8 b2 0a e9 61 06 00 00 90 0f 1e fa 0f 01 ca fc 6a ff e8 11 05 00 00 48 89 c4 48 89 e7 e8
RSP: 0018:ffffc90000006b48 EFLAGS: 00000082
RAX: ffff88823ae00000 RBX: 0000000000000000 RCX: 0000000000d6bdc0
RDX: 0000000022872e41 RSI: 0000000000000001 RDI: 00000000d9005530
RBP: 00000000af4d6bdc R08: 0000000085730cb3 R09: 00000000091a56fe
R10: 000000000000001a R11: ffffffff81b0a9b0 R12: ffff88823bb6bdc0
R13: 0000000000000000 R14: ffffc90000006bd0 R15: ffff888031950610
FS: 0000000000000000(0000) GS:ffff888125245000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2238be7158 CR3: 00000000789b2000 CR4: 00000000003526f0
Call Trace:
RIP: 0010:find_stack lib/stackdepot.c:609 [inline]
RIP: 0010:stack_depot_save_flags+0x156/0x810 lib/stackdepot.c:676
Code: c8 31 c5 c1 c0 18 29 c5 48 8b 05 05 2b 92 15 8b 0d f7 2a 92 15 21 e9 48 c1 e1 04 4c 8d 24 08 65 ff 05 8e 0a 52 0e 4c 8b 3c 08 <4d> 39 e7 44 89 2c 24 74 05 45 89 d5 eb 34 45 31 ff e9 85 00 00 00
RSP: 0018:ffffc90000006b78 EFLAGS: 00000282
kasan_save_stack mm/kasan/common.c:58 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:78
kasan_save_free_info+0x46/0x50 mm/kasan/generic.c:584
poison_slab_object mm/kasan/common.c:253 [inline]
__kasan_slab_free+0x5c/0x80 mm/kasan/common.c:285
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:2685 [inline]
slab_free mm/slub.c:6165 [inline]
kmem_cache_free+0x180/0x630 mm/slub.c:6295
skb_ext_reset include/linux/skbuff.h:5116 [inline]
skb_release_head_state+0x270/0x360 net/core/skbuff.c:1181
skb_release_all net/core/skbuff.c:1187 [inline]
__kfree_skb+0x24/0x210 net/core/skbuff.c:1203
kfree_skb_reason include/linux/skbuff.h:1322 [inline]
kfree_skb include/linux/skbuff.h:1331 [inline]
ip6_mc_input+0x8de/0xbd0 net/ipv6/ip6_input.c:633
ip_sabotage_in+0x1e1/0x270 net/bridge/br_netfilter_hooks.c:984
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:6209 [inline]
__netif_receive_skb net/core/dev.c:6322 [inline]
netif_receive_skb_internal net/core/dev.c:6408 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6467
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
br_handle_frame_finish+0x1541/0x1c80 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+0x91f/0xc30 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: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+0x1277/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x98f/0x3170 net/core/dev.c:6096
__netif_receive_skb_one_core net/core/dev.c:6207 [inline]
__netif_receive_skb net/core/dev.c:6322 [inline]
process_backlog+0x76d/0x1950 net/core/dev.c:6673
__napi_poll+0xae/0x340 net/core/dev.c:7737
napi_poll net/core/dev.c:7800 [inline]
net_rx_action+0x627/0xf70 net/core/dev.c:7957
handle_softirqs+0x22a/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1061
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:mutex_lock_nested+0x4/0x20 kernel/locking/mutex.c:858
Code: c7 c7 94 48 32 90 e8 cb af 7c f6 eb 99 66 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 <89> f2 4c 8b 04 24 be 02 00 00 00 31 c9 eb 1d 66 66 66 66 2e 0f 1f
RSP: 0018:ffffc90005e3fcc0 EFLAGS: 00000246
RAX: ffffffff818f3b9f RBX: 0000000000000006 RCX: ffff88804e529ec0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e7fb480
RBP: ffff888033dd8860 R08: ffffffff903215b7 R09: 1ffffffff20642b6
R10: dffffc0000000000 R11: fffffbfff20642b7 R12: dffffc0000000000
R13: ffff888035736400 R14: ffff888033dd8868 R15: 1ffff110067bb10c
worker_detach_from_pool kernel/workqueue.c:2761 [inline]
rescuer_thread+0xc4d/0x1130 kernel/workqueue.c:3623
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
net_ratelimit: 8314 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 veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, 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 veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, vlan:0)
bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
net_ratelimit: 9118 callbacks suppressed
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 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:6e:a3:4d:e3:87:ae, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, 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 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:6e:a3:4d:e3:87:ae, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:6e:a3:4d:e3:87:ae, vlan:0)