bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P8229/2:b..l rcu: (detected by 0, t=10503 jiffies, g=16213, q=939 ncpus=2) task:dhcpcd-run-hook state:R running task stack:26032 pid:8229 tgid:8229 ppid:8206 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:__prepend_path fs/d_path.c:108 [inline] RIP: 0010:prepend_path+0x424/0xbe0 fs/d_path.c:172 Code: 24 48 48 3b 19 0f 84 a5 01 00 00 e8 16 38 72 ff 49 8d 5d 50 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 cc 1f dd ff <4c> 8b 33 48 8d 5d 20 48 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 RSP: 0018:ffffc900036675a0 EFLAGS: 00010246 RAX: 1ffff110291d1d53 RBX: ffff888148e8ea98 RCX: ffff88807bba5a00 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff88801dadbdc0 R08: ffffffff822d3b2c R09: 1ffffffff2857518 R10: dffffc0000000000 R11: fffffbfff2857519 R12: dffffc0000000000 R13: ffff888148e8ea48 R14: ffff888148e8ea48 R15: 0000000000000000 d_absolute_path+0x179/0x310 fs/d_path.c:234 tomoyo_get_absolute_path security/tomoyo/realpath.c:101 [inline] tomoyo_realpath_from_path+0x2b4/0x5e0 security/tomoyo/realpath.c:271 tomoyo_scan_exec_realpath security/tomoyo/condition.c:243 [inline] tomoyo_condition+0x1a8c/0x3230 security/tomoyo/condition.c:827 tomoyo_check_acl+0x174/0x3f0 security/tomoyo/domain.c:177 tomoyo_execute_permission+0x13d/0x410 security/tomoyo/file.c:615 tomoyo_find_next_domain+0x4a2/0x1d40 security/tomoyo/domain.c:755 tomoyo_bprm_check_security+0x117/0x180 security/tomoyo/tomoyo.c:102 security_bprm_check+0x86/0x250 security/security.c:1296 search_binary_handler fs/exec.c:1736 [inline] exec_binprm fs/exec.c:1790 [inline] bprm_execve+0xa53/0x17a0 fs/exec.c:1842 do_execveat_common+0x55f/0x6f0 fs/exec.c:1949 do_execve fs/exec.c:2023 [inline] __do_sys_execve fs/exec.c:2099 [inline] __se_sys_execve fs/exec.c:2094 [inline] __x64_sys_execve+0x92/0xb0 fs/exec.c:2094 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: 0033:0x7fd5535d9ef7 RSP: 002b:00007fffb6e5c778 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00005573f11e5048 RCX: 00007fd5535d9ef7 RDX: 00005573f11e5068 RSI: 00005573f11e5048 RDI: 00005573f11e5118 RBP: 00005573f11e5118 R08: 00005573f11e511d R09: 00007fffb6e60e10 R10: 0000000000000008 R11: 0000000000000246 R12: 00005573f11e5068 R13: 00007fd553787904 R14: 00005573f11e5068 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10541 jiffies! g16213 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:25040 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: 24 Comm: ksoftirqd/1 Not tainted 6.13.0-rc1-syzkaller-00236-g51db5c894300 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:unwind_get_return_address+0x3b/0x90 arch/x86/kernel/unwind_orc.c:369 Code: 00 00 fc ff df 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 4b 83 3b 00 74 3a 48 83 c3 48 49 89 df 49 c1 ef 03 43 80 3c 37 00 <74> 08 48 89 df e8 7b b2 be 00 48 8b 3b e8 c3 73 1e 00 85 c0 74 14 RSP: 0018:ffffc900001e68e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc900001e6948 RCX: 0000000080000100 RDX: dffffc0000000000 RSI: ffffc900001e0000 RDI: ffffc900001e6900 RBP: ffffc900001e6990 R08: ffffc900001e6db0 R09: 0000000000000000 R10: ffffc900001e6950 R11: fffff5200003cd2c R12: ffff88801d6a8000 R13: ffffffff818b36f0 R14: dffffc0000000000 R15: 1ffff9200003cd29 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd55368c5e8 CR3: 0000000061a6a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x3f/0x80 mm/kasan/common.c:68 unpoison_slab_object mm/kasan/common.c:319 [inline] __kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4104 [inline] slab_alloc_node mm/slub.c:4153 [inline] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4160 skb_clone+0x20c/0x390 net/core/skbuff.c:2084 deliver_clone net/bridge/br_forward.c:125 [inline] maybe_deliver+0x96/0x150 net/bridge/br_forward.c:190 br_flood+0x2e4/0x660 net/bridge/br_forward.c:236 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+0x14eb/0x4690 net/core/dev.c:5566 __netif_receive_skb_one_core net/core/dev.c:5670 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5785 process_backlog+0x662/0x15b0 net/core/dev.c:6117 __napi_poll+0xcb/0x490 net/core/dev.c:6883 napi_poll net/core/dev.c:6952 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7074 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:554 run_ksoftirqd+0xca/0x130 kernel/softirq.c:943 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: 11542 callbacks suppressed 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, vlan:0) net_ratelimit: 12592 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, 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:be:df:ca:13:11:f8, vlan:0) bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0)