bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11100/1:b..l P11087/1:b..l rcu: (detected by 1, t=10502 jiffies, g=46441, q=858 ncpus=2) task:syz.0.1450 state:R running task stack:23808 pid:11087 tgid:11087 ppid:10117 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6861 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6885 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12 __local_bh_enable_ip+0x179/0x200 kernel/softirq.c:389 nl80211_netlink_notify+0x452/0x840 net/wireless/nl80211.c:20133 notifier_call_chain+0x19f/0x3e0 kernel/notifier.c:93 blocking_notifier_call_chain+0x69/0x90 kernel/notifier.c:388 netlink_release+0x11a6/0x1b10 net/netlink/af_netlink.c:787 __sock_release net/socket.c:658 [inline] sock_close+0xbc/0x240 net/socket.c:1426 __fput+0x23f/0x880 fs/file_table.c:431 task_work_run+0x24f/0x310 kernel/task_work.c:228 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f79f977e719 RSP: 002b:00007ffc7dfe5e38 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f79f9937a80 RCX: 00007f79f977e719 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f79f9937a80 R08: 0000000000000006 R09: 00007ffc7dfe612f R10: 00000000003ffc4c R11: 0000000000000246 R12: 0000000000054fd8 R13: 00007ffc7dfe5f40 R14: 0000000000000032 R15: ffffffffffffffff task:modprobe state:R running task stack:23072 pid:11100 tgid:11100 ppid:7155 flags:0x00000000 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7004 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:mtree_range_walk+0x363/0x8e0 Code: 37 d9 f5 bd 01 00 00 00 b0 01 48 89 44 24 18 4c 8b 6c 24 28 eb 60 e8 9c 37 d9 f5 c7 44 24 04 00 00 00 00 31 c0 48 89 44 24 18 <4c> 8b 7c 24 10 eb 70 e8 81 37 d9 f5 48 89 6c 24 18 49 bc 00 00 00 RSP: 0018:ffffc90003eef4d0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007f695c952000 RCX: ffff88802d103c00 RDX: 0000000000000000 RSI: 00007f695c952000 RDI: 00007f695c95efff RBP: 0000000000000003 R08: ffffffff8bbbae8b R09: ffffffff8bbbad52 R10: 0000000000000003 R11: ffff88802d103c00 R12: dffffc0000000000 R13: 00007f695c95efff R14: ffff88802aa1aa08 R15: ffffc90003eefae8 mas_state_walk lib/maple_tree.c:3601 [inline] mas_walk lib/maple_tree.c:4948 [inline] mas_find_setup lib/maple_tree.c:6015 [inline] mas_find+0x73d/0xbb0 lib/maple_tree.c:6055 vma_find include/linux/mm.h:998 [inline] vms_gather_munmap_vmas+0x1149/0x15d0 mm/vma.c:1288 mmap_region+0x817/0x2990 mm/mmap.c:1387 do_mmap+0x8f0/0x1000 mm/mmap.c:496 vm_mmap_pgoff+0x1dd/0x3d0 mm/util.c:588 ksys_mmap_pgoff+0x4eb/0x720 mm/mmap.c:542 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: 0033:0x7f695cbfdb74 RSP: 002b:00007fffe6c94c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007fffe6c94cf8 RCX: 00007f695cbfdb74 RDX: 0000000000000003 RSI: 0000000000002000 RDI: 00007f695c952000 RBP: 00007fffe6c95020 R08: 0000000000000000 R09: 0000000000022000 R10: 0000000000000812 R11: 0000000000000246 R12: 00007f695cbdafc0 R13: 00007fffe6c950a8 R14: 0000000000021bd8 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10443 jiffies! g46441 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:25552 pid:17 tgid:17 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5322 [inline] __schedule+0x1895/0x4b30 kernel/sched/core.c:6682 __schedule_loop kernel/sched/core.c:6759 [inline] schedule+0x14b/0x320 kernel/sched/core.c:6774 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615 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: CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.12.0-rc2-syzkaller-00631-g6d858708d465 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__local_bh_disable_ip+0x35/0x220 kernel/softirq.c:304 Code: 56 41 55 41 54 53 48 83 e4 e0 48 81 ec a0 00 00 00 41 89 f7 48 89 7c 24 18 65 48 8b 04 25 28 00 00 00 48 89 84 24 80 00 00 00 <49> bc 00 00 00 00 00 fc ff df 4c 8d 74 24 60 48 c7 44 24 20 b3 8a RSP: 0018:ffffc900001e6760 EFLAGS: 00000286 RAX: b6a4f5efc6718000 RBX: 0000000000000004 RCX: ffff88801d2f0000 RDX: 0000000000000100 RSI: 0000000000000200 RDI: ffffffff8a7fc2d5 RBP: ffffc900001e6830 R08: ffffffff8a7fc2c0 R09: 0000000000000000 R10: ffffc900001e6990 R11: fffff5200003cd36 R12: ffffc900001e6ae0 R13: dffffc0000000000 R14: 000000000000000e R15: 0000000000000200 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f39b1c9b69e CR3: 000000007b590000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: local_bh_disable include/linux/bottom_half.h:20 [inline] ip6t_do_table+0x214/0x18a0 net/ipv6/netfilter/ip6_tables.c:280 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+0x62c/0x7c0 include/linux/netfilter.h:312 br_nf_forward_ip+0x61e/0x7b0 net/bridge/br_netfilter_hooks.c:746 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+0x2a7/0x460 include/linux/netfilter.h:312 __br_forward+0x489/0x660 net/bridge/br_forward.c:115 br_handle_frame_finish+0x18ba/0x1fe0 net/bridge/br_input.c:215 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+0x13e8/0x4570 net/core/dev.c:5562 __netif_receive_skb_one_core net/core/dev.c:5666 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5781 process_backlog+0x662/0x15b0 net/core/dev.c:6113 __napi_poll+0xcb/0x490 net/core/dev.c:6834 napi_poll net/core/dev.c:6903 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7025 handle_softirqs+0x2c5/0x980 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:927 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: 26739 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:17, vlan:0)