bridge0: received packet on veth0_to_bridge with own address as source address (addr:d2:70:9e:3c:f1:01, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P5827/1:b..l rcu: (detected by 1, t=10503 jiffies, g=31829, q=102 ncpus=2) task:syz-executor state:R running task stack:23584 pid:5827 tgid:5827 ppid:5807 flags:0x00004002 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7078 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:stack_trace_consume_entry+0xe0/0x170 kernel/stacktrace.c:94 Code: 45 01 89 43 10 48 8b 03 48 8d 2c e8 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 75 64 48 89 75 00 8b 43 08 <39> 43 10 0f 92 c0 48 83 c4 08 5b 5d c3 cc cc cc cc 83 e8 01 89 43 RSP: 0018:ffffc900033e7800 EFLAGS: 00000246 RAX: 0000000000000010 RBX: ffffc900033e78e0 RCX: 0000000000000000 RDX: 1ffff9200067cf33 RSI: ffffffff81f2455c RDI: ffffc900033e78ec RBP: ffffc900033e7998 R08: ffffc900033e7854 R09: ffffffff90ffb948 R10: ffffc900033e7820 R11: 000000000000fc88 R12: ffffffff8185c160 R13: ffffc900033e78e0 R14: 0000000000000000 R15: ffff888030e82440 arch_stack_walk+0x86/0x100 arch/x86/kernel/stacktrace.c:27 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122 save_stack+0x162/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x8d/0x400 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+0x661/0x1080 mm/page_alloc.c:2657 __put_partials+0x14c/0x170 mm/slub.c:3142 qlink_free mm/kasan/quarantine.c:163 [inline] qlist_free_all+0x4e/0x120 mm/kasan/quarantine.c:179 kasan_quarantine_reduce+0x195/0x1e0 mm/kasan/quarantine.c:286 __kasan_kmalloc+0x8a/0xb0 mm/kasan/common.c:385 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4283 [inline] __kmalloc_noprof+0x21c/0x510 mm/slub.c:4295 kmalloc_noprof include/linux/slab.h:905 [inline] shmem_initxattrs+0x168/0x5a0 mm/shmem.c:4093 security_inode_init_security+0x26c/0x390 security/security.c:1847 shmem_mknod+0x22e/0x450 mm/shmem.c:3677 shmem_mkdir+0x31/0x60 mm/shmem.c:3736 vfs_mkdir+0x57d/0x860 fs/namei.c:4311 do_mkdirat+0x301/0x3a0 fs/namei.c:4334 __do_sys_mkdirat fs/namei.c:4349 [inline] __se_sys_mkdirat fs/namei.c:4347 [inline] __x64_sys_mkdirat+0x83/0xb0 fs/namei.c:4347 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f062ed7e787 RSP: 002b:00007ffd5cfb77d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007ffd5cfb7820 RCX: 00007f062ed7e787 RDX: 00000000000001ff RSI: 00007ffd5cfb7820 RDI: 00000000ffffff9c RBP: 00007ffd5cfb780c R08: 0000000000000005 R09: 00007ffd5cfb7575 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000047 R13: 000000000004d52d R14: 000000000004d52d R15: 00007ffd5cfb7860 </TASK> rcu: rcu_preempt kthread starved for 10476 jiffies! g31829 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:28424 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: <TASK> context_switch kernel/sched/core.c:5369 [inline] __schedule+0xe58/0x5ad0 kernel/sched/core.c:6756 __schedule_loop kernel/sched/core.c:6833 [inline] schedule+0xe7/0x350 kernel/sched/core.c:6848 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2045 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2247 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> rcu: Stack dump where RCU GP kthread last ran: CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:ip6t_do_table+0xff1/0x1d40 net/ipv6/netfilter/ip6_tables.c:360 Code: ff 48 89 14 24 e8 ef 8b a9 f7 49 8d be 98 00 00 00 48 8b 14 24 48 b8 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 80 3c 01 00 <0f> 85 a2 0b 00 00 49 8b 9e 98 00 00 00 48 89 14 24 e8 29 77 38 01 RSP: 0018:ffffc900001e7640 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 1ffff11009b8a21b RDX: ffff88804dc510cc RSI: ffffffff89f07791 RDI: ffff88804dc510d8 RBP: ffff8881cecb2500 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000004 R13: ffff88804dc510e8 R14: ffff88804dc51040 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f056a985fb8 CR3: 000000000df7e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> </IRQ> <TASK> ip6table_mangle_hook+0xc4/0x770 net/ipv6/netfilter/ip6table_mangle.c:73 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook.constprop.0+0x42e/0x750 include/linux/netfilter.h:269 NF_HOOK include/linux/netfilter.h:312 [inline] ipv6_rcv+0xa4/0x680 net/ipv6/ip6_input.c:309 __netif_receive_skb_one_core+0x12e/0x1e0 net/core/dev.c:5672 __netif_receive_skb+0x1d/0x160 net/core/dev.c:5785 process_backlog+0x443/0x15f0 net/core/dev.c:6117 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0xa94/0x1010 net/core/dev.c:7074 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 run_ksoftirqd kernel/softirq.c:950 [inline] run_ksoftirqd+0x3a/0x60 kernel/softirq.c:942 smpboot_thread_fn+0x661/0xa30 kernel/smpboot.c:164 kthread+0x2c1/0x3a0 kernel/kthread.c:389 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 </TASK> net_ratelimit: 50681 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:d2:70:9e:3c:f1:01, 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:d2:70:9e:3c:f1:01, 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:d2:70:9e:3c:f1:01, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:d2:70:9e:3c:f1:01, 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:d2:70:9e:3c:f1:01, 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:d2:70:9e:3c:f1:01, vlan:0)