bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8284/1:b..l
rcu: (detected by 0, t=10503 jiffies, g=17009, q=1713 ncpus=2)
task:syz.1.186 state:R running task stack:25104 pid:8284 tgid:8278 ppid:5859 task_flags:0x40044c flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
preempt_schedule_irq+0xfe/0x1c0 kernel/sched/core.c:7090
irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x47/0x3e0 kernel/locking/lockdep.c:5877
Code: c9 11 65 48 8b 03 48 89 44 24 28 0f 1f 44 00 00 65 8b 05 d0 e7 c9 11 83 f8 08 0f 83 93 02 00 00 89 c0 48 0f a3 05 f9 6c c1 0e <73> 16 e8 52 b5 09 00 84 c0 75 0d f6 05 5d 53 ab 0e 01 0f 84 b1 02
RSP: 0018:ffffc9000eaee8a0 EFLAGS: 00000297
RAX: 0000000000000001 RBX: ffffffff93686020 RCX: ffff8880790cbc00
RDX: dffffc0000000000 RSI: ffffffff816d9bc8 RDI: ffffffff8ed3df20
RBP: ffffffff816d9bc8 R08: ffffc9000eaeead0 R09: 0000000000000000
R10: ffffc9000eaeea90 R11: fffff52001d5dd54 R12: ffffc9000eaeea50
R13: dffffc0000000000 R14: ffffc9000eaeeae0 R15: ffffffff8ed3df20
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+0x1a9f/0x23b0 arch/x86/kernel/unwind_orc.c:680
__unwind_start+0x59a/0x740 arch/x86/kernel/unwind_orc.c:758
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xe7/0x150 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x11a/0x1d0 kernel/stacktrace.c:122
save_stack+0xfc/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x76/0x1e0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1262 [inline]
free_unref_folios+0xe0e/0x17f0 mm/page_alloc.c:2782
folios_put_refs+0x70a/0x800 mm/swap.c:992
free_pages_and_swap_cache+0x2ea/0x6a0 mm/swap_state.c:267
__tlb_batch_free_encoded_pages mm/mmu_gather.c:136 [inline]
tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
tlb_flush_mmu_free mm/mmu_gather.c:397 [inline]
tlb_flush_mmu+0x3a9/0x690 mm/mmu_gather.c:404
zap_pte_range mm/memory.c:1770 [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+0x3a84/0x44d0 mm/memory.c:1894
unmap_vmas+0x3ce/0x5f0 mm/memory.c:1984
exit_mmap+0x2bc/0xde0 mm/mmap.c:1284
__mmput+0x115/0x420 kernel/fork.c:1379
exit_mm+0x221/0x310 kernel/exit.c:589
do_exit+0x994/0x27f0 kernel/exit.c:940
do_group_exit+0x207/0x2c0 kernel/exit.c:1102
get_signal+0x1696/0x1730 kernel/signal.c:3034
arch_do_signal_or_restart+0x98/0x810 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+0xce/0x340 kernel/entry/common.c:218
do_syscall_64+0x100/0x210 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd45ed8dd6b
RSP: 002b:00007fd45fc3ff10 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 00007fd45ed8dd6b
RDX: 00007fd45fc40fe0 RSI: 0000000080085502 RDI: 0000000000000006
RBP: 00007fd45fc40fe0 R08: 0000000000000000 R09: 00312e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000080085502
R13: 0000000800000000 R14: 0000200000000000 R15: 00007fd45ee1b9de
rcu: rcu_preempt kthread starved for 377 jiffies! g17009 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:26504 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x1b88/0x5240 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x163/0x360 kernel/sched/core.c:6860
schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
kthread+0x7b7/0x940 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: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.15.0-rc3-syzkaller-00001-g9d7a0577c9db #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:check_kcov_mode kernel/kcov.c:183 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:246 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x1f/0x90 kernel/kcov.c:314
Code: 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 4c 8b 04 24 65 48 8b 14 25 08 60 68 93 65 8b 05 b8 9e a5 11 25 00 01 ff 00 74 10 <3d> 00 01 00 00 75 5b 83 ba 3c 16 00 00 00 74 52 8b 82 18 16 00 00
RSP: 0018:ffffc90000006298 EFLAGS: 00000206
RAX: 0000000000000100 RBX: 0000000000000001 RCX: 0000000080000101
RDX: ffffffff8ea96580 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88801d315cb8 R08: ffffffff8ac91b54 R09: ffffc900000065d0
R10: ffffc90000006400 R11: fffff52000000c86 R12: ffff88805dc10000
R13: ffff88801d315ccf R14: 1ffff11003a62b99 R15: 1ffff11003a62b97
FS: 0000000000000000(0000) GS:ffff888124f9a000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555578fe5c8 CR3: 0000000033d4e000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__in6_dev_get include/net/addrconf.h:347 [inline]
ip6_ignore_linkdown include/net/addrconf.h:443 [inline]
find_match+0x104/0xc10 net/ipv6/route.c:781
__find_rr_leaf+0x277/0x8f0 net/ipv6/route.c:869
find_rr_leaf net/ipv6/route.c:890 [inline]
rt6_select net/ipv6/route.c:934 [inline]
fib6_table_lookup+0x410/0xbf0 net/ipv6/route.c:2230
ip6_pol_route+0x26d/0x15f0 net/ipv6/route.c:2266
pol_lookup_func include/net/ip6_fib.h:616 [inline]
fib6_rule_lookup+0x590/0x7a0 net/ipv6/fib6_rules.c:120
ip6_route_input_lookup net/ipv6/route.c:2335 [inline]
ip6_route_input+0x85b/0xda0 net/ipv6/route.c:2631
ip6_rcv_finish+0x140/0x3d0 net/ipv6/ip6_input.c:77
ip_sabotage_in+0x203/0x290 net/bridge/br_netfilter_hooks.c:993
nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline]
nf_hook_slow+0xc8/0x220 net/netfilter/core.c:626
nf_hook include/linux/netfilter.h:269 [inline]
NF_HOOK+0x29b/0x450 include/linux/netfilter.h:312
__netif_receive_skb_one_core net/core/dev.c:5887 [inline]
__netif_receive_skb+0x1ef/0x670 net/core/dev.c:6000
netif_receive_skb_internal net/core/dev.c:6086 [inline]
netif_receive_skb+0x1ea/0x890 net/core/dev.c:6145
NF_HOOK+0xa0/0x410 include/linux/netfilter.h:314
br_handle_frame_finish+0x188d/0x1f60 net/bridge/br_input.c:226
br_nf_hook_thresh+0x482/0x5a0 net/bridge/br_netfilter_hooks.c:1170
br_nf_pre_routing_finish_ipv6+0xaa3/0xdd0 net/bridge/br_netfilter_ipv6.c:-1
NF_HOOK include/linux/netfilter.h:314 [inline]
br_nf_pre_routing_ipv6+0x397/0x790 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+0x9fa/0x1530 net/bridge/br_input.c:433
__netif_receive_skb_core+0x155a/0x4bb0 net/core/dev.c:5773
__netif_receive_skb_one_core net/core/dev.c:5885 [inline]
__netif_receive_skb+0x130/0x670 net/core/dev.c:6000
process_backlog+0x664/0x15c0 net/core/dev.c:6352
__napi_poll+0xcb/0x480 net/core/dev.c:7324
napi_poll net/core/dev.c:7388 [inline]
net_rx_action+0x89d/0x1240 net/core/dev.c:7510
handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xfb/0x220 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 53 7e 18 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:ffffffff8ea07d60 EFLAGS: 000002c6
RAX: c9dfdb81a89f4500 RBX: ffffffff8197272e RCX: ffffffff8c2fb89c
RDX: 0000000000000001 RSI: ffffffff8e6497f7 RDI: ffffffff8ca1b680
RBP: ffffffff8ea07eb8 R08: ffff8880b8632b5b R09: 1ffff110170c656b
R10: dffffc0000000000 R11: ffffed10170c656c R12: 1ffffffff1d40fc6
R13: 1ffffffff1d52cb0 R14: 0000000000000000 R15: dffffc0000000000
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+0x22e/0x5d0 kernel/sched/idle.c:325
cpu_startup_entry+0x42/0x60 kernel/sched/idle.c:423
rest_init+0x2dc/0x300 init/main.c:743
start_kernel+0x484/0x510 init/main.c:1099
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:513
x86_64_start_kernel+0x66/0x70 arch/x86/kernel/head64.c:494
common_startup_64+0x13e/0x147
net_ratelimit: 15313 callbacks suppressed
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)
bridge0: received packet on veth0_to_bridge with own address as source address (addr:d6:25:a8:c1:8a:31, vlan:0)