bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on 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): P19991/1:b..l P19995/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=69357, q=1249 ncpus=2)
task:syz.1.4055 state:R running task stack:25096 pid:19995 tgid:19995 ppid:15587 task_flags:0x400040 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7288
irqentry_exit+0x6f/0x90 kernel/entry/common.c:197
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_next_frame+0x17db/0x2390 arch/x86/kernel/unwind_orc.c:664
Code: 49 0f bf 04 24 48 01 c6 4c 89 f7 48 89 da e8 4c 0e 00 00 84 c0 0f 84 47 01 00 00 48 bd 00 00 00 00 00 fc ff df 48 8b 44 24 20 <0f> b6 04 28 84 c0 0f 85 f4 08 00 00 b3 01 8b 84 24 84 00 00 00 41
RSP: 0018:ffffc9000e0cf058 EFLAGS: 00000202
RAX: 1ffff92001c19e25 RBX: ffffffff903fc068 RCX: 0000000000000001
RDX: ffffc9000e0cf168 RSI: dffffc0000000000 RDI: ffffc9000e0cf4f0
RBP: dffffc0000000000 R08: ffffc9000e0cf4f0 R09: 0000000000000000
R10: ffffc9000e0cf178 R11: fffff52001c19e31 R12: ffffc9000e0cf4f0
R13: ffffc9000e0cf178 R14: ffffc9000e0cf128 R15: 1ffffffff207f80d
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
save_stack+0xf5/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x71/0x1f0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1395 [inline]
__free_frozen_pages+0xbc4/0xd30 mm/page_alloc.c:2895
discard_slab mm/slub.c:2753 [inline]
__put_partials+0x156/0x1a0 mm/slub.c:3218
put_cpu_partial+0x17c/0x250 mm/slub.c:3293
__slab_free+0x2d5/0x3c0 mm/slub.c:4550
qlink_free mm/kasan/quarantine.c:163 [inline]
qlist_free_all+0x97/0x140 mm/kasan/quarantine.c:179
kasan_quarantine_reduce+0x148/0x160 mm/kasan/quarantine.c:286
__kasan_slab_alloc+0x22/0x80 mm/kasan/common.c:340
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236
mt_alloc_one lib/maple_tree.c:176 [inline]
mas_alloc_nodes+0x2e9/0x8e0 lib/maple_tree.c:1255
mas_node_count_gfp lib/maple_tree.c:1337 [inline]
mas_preallocate+0x3ad/0x6f0 lib/maple_tree.c:5537
vma_iter_prealloc mm/vma.h:462 [inline]
__split_vma+0x2fa/0xa00 mm/vma.c:528
split_vma mm/vma.c:598 [inline]
vma_modify+0x12c3/0x1970 mm/vma.c:1623
vma_modify_flags+0x1e8/0x230 mm/vma.c:1649
mprotect_fixup+0x407/0x9c0 mm/mprotect.c:816
do_mprotect_pkey+0x8cd/0xce0 mm/mprotect.c:990
__do_sys_mprotect mm/mprotect.c:1011 [inline]
__se_sys_mprotect mm/mprotect.c:1008 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1008
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f43c258eca7
RSP: 002b:00007fff71957c08 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f43c332d6c0 RCX: 00007f43c258eca7
RDX: 0000000000000003 RSI: 0000000000020000 RDI: 00007f43c330e000
RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000
R10: 0000000000021000 R11: 0000000000000206 R12: 00007fff71957d60
R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000
task:syz.4.4054 state:R running task stack:25272 pid:19991 tgid:19990 ppid:16538 task_flags:0x40054c flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7145
preempt_schedule+0xae/0xc0 kernel/sched/core.c:7169
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__local_bh_enable_ip+0x13e/0x1c0 kernel/softirq.c:414
nl80211_netlink_notify+0x46b/0x840 net/wireless/nl80211.c:20945
notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85
blocking_notifier_call_chain+0x6a/0x90 kernel/notifier.c:380
netlink_release+0x1259/0x1b10 net/netlink/af_netlink.c:763
__sock_release net/socket.c:649 [inline]
sock_close+0xc3/0x240 net/socket.c:1439
__fput+0x449/0xa70 fs/file_table.c:468
task_work_run+0x1d4/0x260 kernel/task_work.c:227
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x6b5/0x2300 kernel/exit.c:961
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x1286/0x1340 kernel/signal.c:3034
arch_do_signal_or_restart+0x9a/0x750 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop+0x75/0x110 kernel/entry/common.c:40
exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
do_syscall_64+0x2bd/0x3b0 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feed7b8ebe9
RSP: 002b:00007feed898d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 00007feed7db5fa0 RCX: 00007feed7b8ebe9
RDX: 0000200000002280 RSI: 0000000000008914 RDI: 0000000000000005
RBP: 00007feed7c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007feed7db6038 R14: 00007feed7db5fa0 R15: 00007ffd921538e8
rcu: rcu_preempt kthread starved for 1450 jiffies! g69357 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:27160 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5357 [inline]
__schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
__schedule_loop kernel/sched/core.c:7043 [inline]
schedule+0x165/0x360 kernel/sched/core.c:7058
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
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: 44 Comm: kworker/u8:3 Not tainted 6.17.0-rc1-syzkaller-00108-g065c31f2c691 #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Workqueue: events_unbound nsim_dev_trap_report_work
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x44/0x3e0 kernel/locking/lockdep.c:5879
Code: 8b 05 10 d4 02 11 48 89 44 24 28 0f 1f 44 00 00 65 8b 05 13 d4 02 11 83 f8 08 0f 83 9a 02 00 00 89 c0 48 0f a3 05 fc 11 06 0e <73> 16 e8 45 f1 08 00 84 c0 75 0d f6 05 1e f8 ef 0d 01 0f 84 ad 02
RSP: 0018:ffffc90000006c50 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffffffff90ba9d01 RCX: 0dc9654ae7460600
RDX: ffffc90000006d01 RSI: ffffffff8172c195 RDI: ffffffff8e139ee0
RBP: dffffc0000000000 R08: ffffc90000007a88 R09: 0000000000000000
R10: ffffc90000006dd8 R11: fffff52000000dbd R12: ffffc90000007a98
R13: ffffffff8172c195 R14: ffffffff8e139ee0 R15: ffffffff8172c195
FS: 0000000000000000(0000) GS:ffff888125c1c000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb7bc84f523 CR3: 000000007a2dc000 CR4: 00000000003526f0
Call Trace:
rcu_lock_release include/linux/rcupdate.h:341 [inline]
rcu_read_unlock include/linux/rcupdate.h:871 [inline]
class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0x19a9/0x2390 arch/x86/kernel/unwind_orc.c:680
arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3e/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:330 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:356
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4180 [inline]
slab_alloc_node mm/slub.c:4229 [inline]
kmem_cache_alloc_noprof+0x1c1/0x3c0 mm/slub.c:4236
skb_clone+0x212/0x3a0 net/core/skbuff.c:2049
deliver_clone net/bridge/br_forward.c:125 [inline]
br_flood+0x414/0x6a0 net/bridge/br_forward.c:249
br_handle_frame_finish+0x14b4/0x19b0 net/bridge/br_input.c:221
br_nf_hook_thresh+0x3c6/0x4a0 net/bridge/br_netfilter_hooks.c:-1
br_nf_pre_routing_finish_ipv6+0x948/0xd00 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:318 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 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:283 [inline]
br_handle_frame+0x982/0x14c0 net/bridge/br_input.c:434
__netif_receive_skb_core+0x10b6/0x4020 net/core/dev.c:5866
__netif_receive_skb_one_core net/core/dev.c:5977 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6092
process_backlog+0x60e/0x14f0 net/core/dev.c:6444
__napi_poll+0xc7/0x360 net/core/dev.c:7494
napi_poll net/core/dev.c:7557 [inline]
net_rx_action+0x707/0xe30 net/core/dev.c:7684
handle_softirqs+0x283/0x870 kernel/softirq.c:579
do_softirq+0xec/0x180 kernel/softirq.c:480
__local_bh_enable_ip+0x17d/0x1c0 kernel/softirq.c:407
spin_unlock_bh include/linux/spinlock.h:396 [inline]
nsim_dev_trap_report drivers/net/netdevsim/dev.c:835 [inline]
nsim_dev_trap_report_work+0x7c7/0xb80 drivers/net/netdevsim/dev.c:866
process_one_work kernel/workqueue.c:3236 [inline]
process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319
worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400
kthread+0x70e/0x8a0 kernel/kthread.c:463
ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
net_ratelimit: 9919 callbacks suppressed
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)
bridge0: received packet on with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)