bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P13767/1:b..l rcu: (detected by 0, t=10503 jiffies, g=53237, q=1806 ncpus=2) task:syz-executor state:R running task stack:21296 pid:13767 tgid:13767 ppid:13751 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7078 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:stack_depot_save_flags+0x5/0x940 lib/stackdepot.c:588 Code: c7 90 4b 0a 8f 48 89 da e8 18 73 00 00 eb da 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 <41> 57 41 56 41 55 41 54 53 48 83 ec 38 65 48 8b 04 25 28 00 00 00 RSP: 0018:ffffc900049ef0b0 EFLAGS: 00000246 RAX: 0000000000000010 RBX: ffff88804f62df80 RCX: 0000000000000001 RDX: 0000000000002800 RSI: 0000000000000010 RDI: ffffc900049ef100 RBP: ffffc900049ef1f0 R08: 000000000000000f R09: ffffc900049ef030 R10: ffffc900049eef90 R11: ffffffff818b4a10 R12: dffffc0000000000 R13: 1ffff9200093de1c R14: ffffc900049ef100 R15: 1ffff11009ec5bf0 save_stack+0x109/0x1f0 mm/page_owner.c:157 __reset_page_owner+0x76/0x430 mm/page_owner.c:297 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1127 [inline] free_unref_page+0xd3f/0x1010 mm/page_alloc.c:2659 discard_slab mm/slub.c:2688 [inline] __put_partials+0x160/0x1c0 mm/slub.c:3157 put_cpu_partial+0x17c/0x250 mm/slub.c:3232 __slab_free+0x290/0x380 mm/slub.c:4483 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x9a/0x140 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x14f/0x170 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x23/0xb0 mm/kasan/common.c:385 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4298 [inline] __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4310 kmalloc_noprof include/linux/slab.h:905 [inline] tomoyo_realpath_from_path+0xcf/0x5e0 security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x258/0x4f0 security/tomoyo/file.c:771 security_file_open+0xac/0x250 security/security.c:3105 do_dentry_open+0x328/0x1b70 fs/open.c:928 vfs_open+0x3e/0x330 fs/open.c:1075 do_open fs/namei.c:3828 [inline] path_openat+0x2c84/0x3590 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_openat fs/open.c:1433 [inline] __se_sys_openat fs/open.c:1428 [inline] __x64_sys_openat+0x247/0x2a0 fs/open.c:1428 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb0dab85621 RSP: 002b:00007fb0dae9ec60 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fb0dac018f4 RCX: 00007fb0dab85621 RDX: 0000000000090800 RSI: 00007fb0dae9fe00 RDI: 00000000ffffff9c RBP: 00007fb0dae9fdec R08: 0000000000000000 R09: 7fffffffffffffff R10: 0000000000000000 R11: 0000000000000287 R12: 00007fb0dae9fe00 R13: 00007fb0dac018f4 R14: 00007fb0dae9fe40 R15: 0000000000000012 rcu: rcu_preempt kthread starved for 10418 jiffies! g53237 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:25624 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x1850/0x4c30 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6848 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 5996 Comm: kworker/1:7 Not tainted 6.13.0-rc5-syzkaller-00163-gab75170520d4 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Workqueue: events_power_efficient neigh_periodic_work RIP: 0010:get_unaligned_le64 include/linux/unaligned.h:28 [inline] RIP: 0010:__siphash_unaligned+0xef/0x3d0 lib/siphash.c:86 Code: c7 48 8b 54 24 10 49 39 d5 0f 84 55 01 00 00 4c 89 6c 24 20 48 83 e1 f8 48 83 c1 f8 48 89 4c 24 28 31 ff 49 89 d5 49 8d 6d 07 <4c> 89 e8 48 c1 e8 03 0f b6 04 30 84 c0 0f 85 af 00 00 00 48 89 e8 RSP: 0018:ffffc90000a17348 EFLAGS: 00000212 RAX: ffffffff8bc42cd2 RBX: b31887038af27516 RCX: ffff888031dc1e00 RDX: ffffc90000a17818 RSI: dffffc0000000000 RDI: 0000000000000010 RBP: ffffc90000a1782f R08: ffffffff8992bc89 R09: ffffffff8992b940 R10: 0000000000000002 R11: ffff888031dc1e00 R12: 7d56eb016274e9ac R13: ffffc90000a17828 R14: a0f7396de45499a2 R15: 3f4fbb85e8c405de FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f154d2410c4 CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: siphash include/linux/siphash.h:86 [inline] __flow_hash_from_keys net/core/flow_dissector.c:1796 [inline] flow_hash_from_keys_seed+0x409/0x7d0 net/core/flow_dissector.c:1814 rt6_multipath_hash+0x12ac/0x2610 ip6_route_input+0x9d8/0xd90 net/ipv6/route.c:2594 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x203/0x290 net/bridge/br_netfilter_hooks.c:1021 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xc3/0x220 net/netfilter/core.c:626 nf_hook include/linux/netfilter.h:269 [inline] NF_HOOK+0x29e/0x450 include/linux/netfilter.h:312 __netif_receive_skb_one_core net/core/dev.c:5674 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5787 netif_receive_skb_internal net/core/dev.c:5873 [inline] netif_receive_skb+0x1e8/0x890 net/core/dev.c:5932 NF_HOOK+0x9e/0x400 include/linux/netfilter.h:314 br_handle_frame_finish+0x18ed/0x1fe0 br_nf_hook_thresh+0x472/0x590 br_nf_pre_routing_finish_ipv6+0xaa0/0xdd0 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x379/0x770 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:277 [inline] br_handle_frame+0x9fd/0x1530 net/bridge/br_input.c:424 __netif_receive_skb_core+0x14eb/0x4690 net/core/dev.c:5568 __netif_receive_skb_one_core net/core/dev.c:5672 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5787 process_backlog+0x662/0x15b0 net/core/dev.c:6119 __napi_poll+0xcb/0x490 net/core/dev.c:6885 napi_poll net/core/dev.c:6954 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7076 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 do_softirq+0x11b/0x1e0 kernel/softirq.c:462 __local_bh_enable_ip+0x1bb/0x200 kernel/softirq.c:389 neigh_periodic_work+0xbcb/0xde0 net/core/neighbour.c:968 process_one_work kernel/workqueue.c:3229 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3310 worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 net_ratelimit: 23193 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) net_ratelimit: 17050 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:83:e7:1f:c3:7c, vlan:0)