bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5209/1:b..l rcu: (detected by 1, t=10503 jiffies, g=8833, q=853 ncpus=2) task:udevd state:R running task stack:23904 pid:5209 tgid:5209 ppid:1 flags:0x00004002 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_trace_save+0xdc/0x1d0 kernel/stacktrace.c:116 Code: e8 29 a4 7a 00 4c 89 64 24 40 49 8d 7e 08 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 99 00 00 00 8b 44 24 1c 89 44 24 48 <49> 8d 7e 0c ff c3 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 RSP: 0018:ffffc90003096fe0 EFLAGS: 00000246 RAX: 0000000000000010 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000002 RSI: 0000000000000010 RDI: ffffc90003097028 RBP: ffffc900030970b0 R08: ffffffff820f3962 R09: 0000000000000000 R10: ffffc90003097100 R11: fffff52000612e30 R12: ffffc90003097100 R13: dffffc0000000000 R14: ffffc90003097020 R15: 1ffff92000612e00 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __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_slab_alloc+0x23/0x80 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4119 [inline] slab_alloc_node mm/slub.c:4168 [inline] __do_kmalloc_node mm/slub.c:4297 [inline] __kmalloc_noprof+0x236/0x4c0 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: 0033:0x7f6ca35169a4 RSP: 002b:00007fffbb07b230 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055909a3bd040 RCX: 00007f6ca35169a4 RDX: 0000000000080141 RSI: 000055909a3a00d8 RDI: 00000000ffffff9c RBP: 000055909a3a00d8 R08: 00000000ffffffff R09: 0000000000000000 R10: 00000000000001a4 R11: 0000000000000246 R12: 0000000000080141 R13: ffffffffffffffff R14: 00000000ffffffff R15: 00000000ffffffff rcu: rcu_preempt kthread starved for 7322 jiffies! g8833 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:25976 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.13.0-rc5-syzkaller-00134-gaba74e639f8d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:bpf_set_run_ctx include/linux/bpf.h:2136 [inline] RIP: 0010:__bpf_trace_run kernel/trace/bpf_trace.c:2359 [inline] RIP: 0010:bpf_trace_run3+0x201/0x5a0 kernel/trace/bpf_trace.c:2404 Code: 80 3c 08 00 74 08 4c 89 e7 e8 2b 8d 5a 00 48 89 5c 24 60 65 4c 8b 2c 25 00 d6 03 00 49 81 c5 00 18 00 00 4d 89 ee 49 c1 ee 03 <48> b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 08 4c 89 ef e8 06 RSP: 0018:ffffc90000156a80 EFLAGS: 00000a02 RAX: 1ffff9200002ad5c RBX: 0000000000000000 RCX: dffffc0000000000 RDX: ffff88801cacda00 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000156b98 R08: ffffffff81ab4f52 R09: 0000000000000000 R10: ffffc90000156ae0 R11: fffff5200002ad5e R12: ffffc90000156ae0 R13: ffff88801cacf200 R14: 1ffff11003959e40 R15: ffffc90005af9000 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055909a3a272e CR3: 000000000e736000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __traceiter_kmem_cache_free+0x33/0x50 include/trace/events/kmem.h:114 trace_kmem_cache_free include/trace/events/kmem.h:114 [inline] kmem_cache_free+0x367/0x410 mm/slub.c:4714 netlink_broadcast_filtered+0x116d/0x12a0 net/netlink/af_netlink.c:1532 nlmsg_multicast_filtered include/net/netlink.h:1128 [inline] nlmsg_multicast include/net/netlink.h:1147 [inline] nlmsg_notify+0xfb/0x1c0 net/netlink/af_netlink.c:2585 br_fdb_update+0x55d/0x740 net/bridge/br_fdb.c:934 br_handle_frame_finish+0x739/0x1fe0 net/bridge/br_input.c:141 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 run_ksoftirqd+0xca/0x130 kernel/softirq.c:950 smpboot_thread_fn+0x544/0xa30 kernel/smpboot.c:164 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: 11079 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) net_ratelimit: 12565 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:8e:54:e4:b7:82:84, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)