bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8232/1:b..l
rcu: (detected by 0, t=10506 jiffies, g=53457, q=2328 ncpus=2)
task:kworker/u8:20 state:R running task stack:25016 pid:8232 tgid:8232 ppid:2 task_flags:0x4208060 flags:0x00080000
Workqueue: events_unbound cfg80211_wiphy_work
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
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:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5893
Code: fe 9d 11 00 00 00 00 eb b5 e8 a5 6e 12 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 95 b9 9d 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 52 43 94
RSP: 0018:ffffc9000318f488 EFLAGS: 00000286
RAX: 29c18ece84b96e00 RBX: 0000000000000206 RCX: 0000000000000046
RDX: 0000000000000003 RSI: ffffffff8e25db1e RDI: ffffffff8c2ab780
RBP: ffff88801d7be918 R08: ffffc9000318fe70 R09: 0000000000000000
R10: ffffc9000318f5b8 R11: fffff52000631eb9 R12: 0000000000000003
R13: 0000000000000003 R14: ffffffff8e959c20 R15: ffff88801d7bdd00
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [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
kasan_save_free_info+0x40/0x50 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:2705 [inline]
slab_free mm/slub.c:6405 [inline]
kfree+0x1c5/0x640 mm/slub.c:6720
skb_kfree_head net/core/skbuff.c:1077 [inline]
skb_free_head net/core/skbuff.c:1089 [inline]
skb_release_data+0x85e/0xab0 net/core/skbuff.c:1116
skb_release_all net/core/skbuff.c:1191 [inline]
__kfree_skb+0x5d/0x210 net/core/skbuff.c:1205
ieee80211_iface_work+0x259/0x1010 net/mac80211/iface.c:1819
cfg80211_wiphy_work+0x29e/0x420 net/wireless/core.c:538
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
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: rcu_preempt kthread starved for 1050 jiffies! g53457 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:27496 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00080000
Call Trace:
context_switch kernel/sched/core.c:5510 [inline]
__schedule+0x17d9/0x56c0 kernel/sched/core.c:7234
__schedule_loop kernel/sched/core.c:7311 [inline]
schedule+0x164/0x2b0 kernel/sched/core.c:7326
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: 5363 Comm: crond Tainted: G L syzkaller #0 PREEMPT(full)
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:debug_lockdep_rcu_enabled+0x0/0x40 kernel/rcu/update.c:319
Code: 48 8d 3d 73 d2 81 04 48 c7 c6 f9 b0 fc 8d 67 48 0f b9 3a 90 eb ca cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 31 c0 83 3d 83 3f 7e 04 00 74 1d 83 3d 5a 71 7e 04 00
RSP: 0018:ffffc900000070f8 EFLAGS: 00000282
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888030a68000
RDX: 0000000000000100 RSI: ffffffff8fe67d80 RDI: 0000000000000002
RBP: ffffc90000007210 R08: ffff888030a68000 R09: 0000000000000004
R10: 0000000000000003 R11: 0000000000000100 R12: 1ffff92000000e28
R13: ffffc90000007160 R14: ffff88807bcde900 R15: dffffc0000000000
FS: 00007f8699b87c80(0000) GS:ffff888125220000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562b5230ffd8 CR3: 000000007ab2e000 CR4: 00000000003526f0
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
nf_hook include/linux/netfilter.h:275 [inline]
NF_HOOK+0x243/0x3c0 include/linux/netfilter.h:316
__netif_receive_skb_one_core net/core/dev.c:6206 [inline]
__netif_receive_skb net/core/dev.c:6319 [inline]
netif_receive_skb_internal net/core/dev.c:6405 [inline]
netif_receive_skb+0x278/0xbf0 net/core/dev.c:6464
NF_HOOK+0xa4/0x3a0 include/linux/netfilter.h:318
br_handle_frame_finish+0x1192/0x1990 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+0x127f/0x1510 net/bridge/br_input.c:442
__netif_receive_skb_core+0x989/0x30b0 net/core/dev.c:6093
__netif_receive_skb_one_core net/core/dev.c:6204 [inline]
__netif_receive_skb net/core/dev.c:6319 [inline]
process_backlog+0x706/0x1860 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 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:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:schedule_debug kernel/sched/core.c:6073 [inline]
RIP: 0010:__schedule+0x185/0x56c0 kernel/sched/core.c:7083
Code: 74 08 48 89 df e8 cb 56 7e f6 48 8b 1b 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 b2 56 7e f6 48 81 3b 9d 6e ac 57 <0f> 85 2f 1d 00 00 8b 5c 24 48 85 db 7f 4c 49 8d 5c 24 18 48 89 d8
RSP: 0018:ffffc9000208f0e0 EFLAGS: 00000246
RAX: 1ffff92000411000 RBX: ffffc90002088000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff8c2ab760 RDI: ffffffff8c2ab720
RBP: ffffc9000208f2d8 R08: ffffffff9032f8f7 R09: 1ffffffff2065f1e
R10: dffffc0000000000 R11: fffffbfff2065f1f R12: ffff888030a68000
R13: dffffc0000000000 R14: 1ffff92000411e40 R15: ffff888125220000
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
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:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5893
Code: fe 9d 11 00 00 00 00 eb b5 e8 a5 6e 12 0a f7 c3 00 02 00 00 74 b9 65 48 8b 05 95 b9 9d 11 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc 48 8d 3d 52 43 94
RSP: 0018:ffffc9000208f408 EFLAGS: 00000282
RAX: 8b2339c1cba99b00 RBX: 0000000000000206 RCX: 0000000000000046
RDX: 0000000000000001 RSI: ffffffff8e25db1e RDI: ffffffff8c2ab780
RBP: ffff888030a68bc8 R08: ffffc9000208f908 R09: 0000000000000000
R10: ffffc9000208f538 R11: fffff52000411ea9 R12: 0000000000000001
R13: 0000000000000001 R14: ffffffff8e959c20 R15: ffff888030a68000
rcu_lock_release include/linux/rcupdate.h:310 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1183 [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
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:1406 [inline]
__free_frozen_pages+0xc1e/0xd10 mm/page_alloc.c:2950
__slab_free+0x274/0x2c0 mm/slub.c:5767
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:4612 [inline]
slab_alloc_node mm/slub.c:4945 [inline]
kmem_cache_alloc_noprof+0x2a0/0x5f0 mm/slub.c:4959
lsm_file_alloc security/security.c:171 [inline]
security_file_alloc+0x34/0x310 security/security.c:2406
init_file+0x90/0x2b0 fs/file_table.c:184
alloc_empty_file+0x74/0x1d0 fs/file_table.c:266
path_openat+0x8f/0x3830 fs/namei.c:4845
do_file_open+0x23e/0x4a0 fs/namei.c:4888
do_sys_openat2+0x115/0x200 fs/open.c:1368
do_sys_open fs/open.c:1374 [inline]
__do_sys_openat fs/open.c:1390 [inline]
__se_sys_openat fs/open.c:1385 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1385
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: 0033:0x7f8699d45c3a
Code: 41 89 f2 48 89 54 24 e0 41 83 e2 40 75 2a 89 f0 f7 d0 a9 00 00 41 00 74 1f 89 f2 b8 01 01 00 00 48 89 fe bf 9c ff ff ff 0f 05 <48> 3d 00 f0 ff ff 77 2e c3 0f 1f 44 00 00 48 8d 44 24 08 c7 44 24
RSP: 002b:00007fffb40f54a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000559b482602a0 RCX: 00007f8699d45c3a
RDX: 0000000000080000 RSI: 00007f8699de245a RDI: 00000000ffffff9c
RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000206 R12: 00007f8699de07f4
R13: 00007f8699de07f4 R14: 0000000000000001 R15: 0000000000000033
net_ratelimit: 14214 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
net_ratelimit: 21576 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:c6:55:c8:20:fb:a6, vlan:0)