bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8319/1:b..l
rcu: (detected by 1, t=10503 jiffies, g=24461, q=431 ncpus=2)
task:syz.2.601 state:R running task stack:27096 pid:8319 tgid:8313 ppid:5822 task_flags:0x40054c flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:6947
preempt_schedule+0xae/0xc0 kernel/sched/core.c:6971
preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
zap_pte_range mm/memory.c:1761 [inline]
zap_pmd_range mm/memory.c:1823 [inline]
zap_pud_range mm/memory.c:1852 [inline]
zap_p4d_range mm/memory.c:1873 [inline]
unmap_page_range+0x3756/0x4210 mm/memory.c:1894
unmap_vmas+0x25d/0x3c0 mm/memory.c:1984
exit_mmap+0x245/0xba0 mm/mmap.c:1284
__mmput+0x118/0x410 kernel/fork.c:1379
exit_mm+0x1da/0x2c0 kernel/exit.c:589
do_exit+0x859/0x2550 kernel/exit.c:940
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
get_signal+0x125e/0x1310 kernel/signal.c:3034
arch_do_signal_or_restart+0x95/0x780 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x8b/0x120 kernel/entry/common.c:218
do_syscall_64+0x103/0x210 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3029b8e969
RSP: 002b:00007f302a9cf0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f3029db6088 RCX: 00007f3029b8e969
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f3029db6088
RBP: 00007f3029db6080 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f3029db608c
R13: 0000000000000000 R14: 00007ffc7986e0e0 R15: 00007ffc7986e1c8
rcu: rcu_preempt kthread starved for 943 jiffies! g24461 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:27032 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2046
rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2248
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.15.0-rc4-syzkaller-00296-ge8ab83e34bdc #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025
RIP: 0010:arch_static_branch_jump kernel/sched/clock.c:297 [inline]
RIP: 0010:local_clock_noinstr+0x4/0xe0 kernel/sched/clock.c:300
Code: 48 c7 c7 00 5d 69 8b e8 9a 28 d8 f5 cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 <53> 66 90 e8 54 db ff ff 48 03 05 25 a9 2e 04 5b c3 cc cc cc cc cc
RSP: 0018:ffffc90000a07ab0 EFLAGS: 00000202
RAX: ffffffff8228ba5a RBX: 0000000000052820 RCX: ffff88801c6c5a00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffffea0002645300
RBP: ffffc90000a07b70 R08: ffffffff8f7daf77 R09: 0000000000000000
R10: ffffed1013229800 R11: fffffbfff1efb5ef R12: 0000000000000000
R13: dffffc0000000000 R14: ffffea0002645300 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8881261ff000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000010000 CR3: 0000000053faa000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
local_clock+0x10/0x30 kernel/sched/clock.c:315
__set_page_owner+0x7f/0x4a0 mm/page_owner.c:326
set_page_owner include/linux/page_owner.h:32 [inline]
post_alloc_hook+0x1d8/0x230 mm/page_alloc.c:1718
prep_new_page mm/page_alloc.c:1726 [inline]
get_page_from_freelist+0x21c7/0x22a0 mm/page_alloc.c:3688
__alloc_frozen_pages_noprof+0x181/0x370 mm/page_alloc.c:4970
alloc_pages_mpol+0x232/0x4a0 mm/mempolicy.c:2301
alloc_slab_page mm/slub.c:2450 [inline]
allocate_slab+0x8a/0x3b0 mm/slub.c:2618
new_slab mm/slub.c:2672 [inline]
___slab_alloc+0xbfc/0x1480 mm/slub.c:3858
__slab_alloc mm/slub.c:3948 [inline]
__slab_alloc_node mm/slub.c:4023 [inline]
slab_alloc_node mm/slub.c:4184 [inline]
kmem_cache_alloc_noprof+0x283/0x3c0 mm/slub.c:4203
skb_clone+0x212/0x3a0 net/core/skbuff.c:2056
deliver_clone net/bridge/br_forward.c:125 [inline]
maybe_deliver+0x98/0x160 net/bridge/br_forward.c:190
br_flood+0x31a/0x6a0 net/bridge/br_forward.c:237
br_handle_frame_finish+0x146c/0x1950 net/bridge/br_input.c:220
br_nf_hook_thresh+0x3bf/0x490 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:314 [inline]
br_nf_pre_routing_ipv6+0x37e/0x6b0 net/bridge/br_netfilter_ipv6.c:184
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_bridge_pre net/bridge/br_input.c:282 [inline]
br_handle_frame+0x97f/0x14c0 net/bridge/br_input.c:433
__netif_receive_skb_core+0x10de/0x4180 net/core/dev.c:5773
__netif_receive_skb_one_core net/core/dev.c:5885 [inline]
__netif_receive_skb+0x72/0x380 net/core/dev.c:6000
process_backlog+0x60e/0x14f0 net/core/dev.c:6352
__napi_poll+0xc4/0x480 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0x6ea/0xdf0 net/core/dev.c:7510
handle_softirqs+0x283/0x870 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xca/0x1f0 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:pv_native_safe_halt+0x13/0x20 arch/x86/kernel/paravirt.c:81
Code: cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 03 0b 19 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6
RAX: 8b5cb0fd530e5f00 RBX: ffffffff81973e48 RCX: 8b5cb0fd530e5f00
RDX: 0000000000000001 RSI: ffffffff8d737235 RDI: ffffffff8bc0fea0
RBP: ffffc90000197f20 R08: ffff8880b8932b5b R09: 1ffff1101712656b
R10: dffffc0000000000 R11: ffffed101712656c R12: ffffffff8f7daf70
R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff110038d8b40
arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
default_idle+0x13/0x20 arch/x86/kernel/process.c:748
default_idle_call+0x74/0xb0 kernel/sched/idle.c:117
cpuidle_idle_call kernel/sched/idle.c:185 [inline]
do_idle+0x1e8/0x510 kernel/sched/idle.c:325
cpu_startup_entry+0x44/0x60 kernel/sched/idle.c:423
start_secondary+0x101/0x110 arch/x86/kernel/smpboot.c:315
common_startup_64+0x13e/0x147
net_ratelimit: 14037 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
net_ratelimit: 18841 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:3a:15:e8:29:b5:a5, vlan:0)