batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P11867/1:b..l P5828/1:b..l P5196/1:b..l rcu: (detected by 0, t=10505 jiffies, g=57737, q=573338 ncpus=2) task:udevd state:R running task stack:24664 pid:5196 tgid:5196 ppid:1 task_flags:0x400140 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x116f/0x5de0 kernel/sched/core.c:6767 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090 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:lock_release+0x183/0x2f0 kernel/locking/lockdep.c:5891 Code: 0f c1 05 08 f3 0e 12 83 f8 01 0f 85 1d 01 00 00 9c 58 f6 c4 02 0f 85 08 01 00 00 41 f7 c5 00 02 00 00 74 01 fb 48 8b 44 24 10 <65> 48 2b 05 5d b5 0e 12 0f 85 58 01 00 00 48 83 c4 18 5b 41 5c 41 RSP: 0018:ffffc90003a47238 EFLAGS: 00000206 RAX: 9d2fbc60c0d2e200 RBX: ffffffff8e3bf5c0 RCX: ffffc90003a47244 RDX: 0000000000000003 RSI: ffffffff8dbca21f RDI: ffffffff8bf46440 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000015f05 R12: ffffffff8169ed14 R13: 0000000000000206 R14: ffff888079cfa440 R15: 0000000000000004 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x3f9/0x20a0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x160/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2725 discard_slab mm/slub.c:2730 [inline] __put_partials+0x16d/0x1c0 mm/slub.c:3199 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_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] kmem_cache_alloc_lru_noprof+0x1d0/0x3b0 mm/slub.c:4229 alloc_inode+0xc3/0x240 fs/inode.c:348 iget_locked+0x2e4/0x830 fs/inode.c:1439 kernfs_get_inode+0x48/0x460 fs/kernfs/inode.c:251 kernfs_iop_lookup+0x1a7/0x2d0 fs/kernfs/dir.c:1234 __lookup_slow+0x24e/0x460 fs/namei.c:1807 lookup_slow fs/namei.c:1824 [inline] walk_component+0x353/0x5b0 fs/namei.c:2128 link_path_walk.part.0.constprop.0+0x685/0xd60 fs/namei.c:2493 link_path_walk fs/namei.c:2425 [inline] path_openat+0x227/0x2d40 fs/namei.c:4000 do_filp_open+0x20b/0x470 fs/namei.c:4031 do_sys_openat2+0x11b/0x1d0 fs/open.c:1429 do_sys_open fs/open.c:1444 [inline] __do_sys_openat fs/open.c:1460 [inline] __se_sys_openat fs/open.c:1455 [inline] __x64_sys_openat+0x174/0x210 fs/open.c:1455 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc83f5169a4 RSP: 002b:00007ffe8cc07520 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007fc83f5169a4 RDX: 0000000000080000 RSI: 00007ffe8cc07658 RDI: 00000000ffffff9c RBP: 00007ffe8cc07658 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080000 R13: 0000557db7deeb42 R14: 0000000000000001 R15: 0000000000000000 task:syz-executor state:R running task stack:23384 pid:5828 tgid:5828 ppid:5814 task_flags:0x400140 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x116f/0x5de0 kernel/sched/core.c:6767 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090 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:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5870 Code: b0 0e 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 f2 15 ee 0e 0f 82 74 02 00 00 8b 35 8a 45 ee 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 c9 af 0e 12 0f 85 c7 02 00 00 48 83 c4 RSP: 0018:ffffc90003e37498 EFLAGS: 00000206 RAX: 0000000000000046 RBX: ffffffff8e3bf5c0 RCX: 000000002c2f11dd RDX: 0000000000000000 RSI: ffffffff8dbca21f RDI: ffffffff8bf46440 RBP: 0000000000000002 R08: d8debdb303dd0eb6 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] class_rcu_constructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 save_stack+0x160/0x1f0 mm/page_owner.c:156 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1262 [inline] __free_frozen_pages+0x69d/0xff0 mm/page_alloc.c:2725 discard_slab mm/slub.c:2730 [inline] __put_partials+0x16d/0x1c0 mm/slub.c:3199 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_slab_alloc+0x69/0x90 mm/kasan/common.c:329 kasan_slab_alloc include/linux/kasan.h:250 [inline] slab_post_alloc_hook mm/slub.c:4161 [inline] slab_alloc_node mm/slub.c:4210 [inline] __do_kmalloc_node mm/slub.c:4340 [inline] __kvmalloc_node_noprof+0x22e/0x600 mm/slub.c:5026 xt_jumpstack_alloc net/netfilter/x_tables.c:1355 [inline] xt_replace_table+0x1e3/0x950 net/netfilter/x_tables.c:1394 __do_replace+0x1cf/0x9e0 net/ipv4/netfilter/ip_tables.c:1064 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline] do_ipt_set_ctl+0x86d/0xae0 net/ipv4/netfilter/ip_tables.c:1635 nf_setsockopt+0x8a/0xf0 net/netfilter/nf_sockopt.c:101 ip_setsockopt+0xcb/0xf0 net/ipv4/ip_sockglue.c:1424 tcp_setsockopt+0xa4/0x100 net/ipv4/tcp.c:4077 do_sock_setsockopt+0x221/0x470 net/socket.c:2296 __sys_setsockopt+0x1a0/0x230 net/socket.c:2321 __do_sys_setsockopt net/socket.c:2327 [inline] __se_sys_setsockopt net/socket.c:2324 [inline] __x64_sys_setsockopt+0xbd/0x160 net/socket.c:2324 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fb3d119005a RSP: 002b:00007ffee9a33d58 EFLAGS: 00000202 ORIG_RAX: 0000000000000036 RAX: ffffffffffffffda RBX: 00007ffee9a33de0 RCX: 00007fb3d119005a RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00000000000002d8 R09: 00007ffee9a34197 R10: 00007fb3d1380ea0 R11: 0000000000000202 R12: 00007fb3d1380e40 R13: 00007ffee9a33d7c R14: 0000000000000000 R15: 00007fb3d1383000 task:kworker/1:1 state:R running task stack:26040 pid:11867 tgid:11867 ppid:2 task_flags:0x4208060 flags:0x00004000 Workqueue: events_power_efficient gc_worker Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x116f/0x5de0 kernel/sched/core.c:6767 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7090 irqentry_exit+0x36/0x90 kernel/entry/common.c:354 asm_common_interrupt+0x26/0x40 arch/x86/include/asm/idtentry.h:693 RIP: 0010:__seqprop_spinlock_sequence include/linux/seqlock.h:227 [inline] RIP: 0010:nf_conntrack_get_ht include/net/netfilter/nf_conntrack.h:333 [inline] RIP: 0010:gc_worker+0x2d5/0x16e0 net/netfilter/nf_conntrack_core.c:1534 Code: 00 00 48 c7 c7 c8 f1 86 90 e8 47 7e 03 f8 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 15 a0 26 f8 58 48 85 db 0f 85 d4 0f 00 00 96 a4 26 f8 8b 1d c0 46 f2 06 41 89 dc 31 ff 41 83 e4 01 44 89 RSP: 0018:ffffc90004387b60 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff8994b639 RDX: ffff88803a760000 RSI: ffffffff8994b648 RDI: 0000000000000007 RBP: ffffffff9afdbb4c R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888024c00000 R13: 0000000000040000 R14: dffffc0000000000 R15: 0000000000001770 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 rcu: rcu_preempt kthread starved for 814 jiffies! g57737 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:27848 pid:16 tgid:16 ppid:2 task_flags:0x208040 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5382 [inline] __schedule+0x116f/0x5de0 kernel/sched/core.c:6767 __schedule_loop kernel/sched/core.c:6845 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:6860 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99 rcu_gp_fqs_loop+0x1ea/0xb00 kernel/rcu/tree.c:2046 rcu_gp_kthread+0x270/0x380 kernel/rcu/tree.c:2248 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 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: 10798 Comm: kworker/u8:19 Not tainted 6.15.0-rc2-syzkaller-00400-g3088d26962e8 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: bat_events batadv_tt_purge RIP: 0010:__lock_acquire+0x65/0x1ba0 kernel/locking/lockdep.c:5099 Code: 0f 84 d0 06 00 00 48 8b 07 49 89 fb 48 3d 00 8b ad 93 0f 84 be 06 00 00 45 89 cc 44 8b 0d f3 dc 93 0c 89 f3 41 89 d2 41 89 cd <45> 85 c9 0f 84 4c 06 00 00 48 3d 10 8b ad 93 0f 84 40 06 00 00 83 RSP: 0018:ffffc90000a07748 EFLAGS: 00000006 RAX: ffffffff9ab64da0 RBX: 0000000000000000 RCX: 0000000000000002 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff8e3bf5c0 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff8e3bf5c0 R12: 0000000000000001 R13: 0000000000000002 R14: ffff8880265d4880 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff888124ab2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000039a030 CR3: 0000000035150000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5866 [inline] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823 rcu_lock_acquire include/linux/rcupdate.h:331 [inline] rcu_read_lock include/linux/rcupdate.h:841 [inline] avc_reclaim_node security/selinux/avc.c:476 [inline] avc_alloc_node+0x268/0x6a0 security/selinux/avc.c:507 avc_update_node.isra.0+0x6d/0xb60 security/selinux/avc.c:841 avc_denied+0x141/0x190 security/selinux/avc.c:1007 avc_has_perm_noaudit+0x306/0x3b0 security/selinux/avc.c:1168 avc_has_perm+0xc0/0x1c0 security/selinux/avc.c:1195 selinux_ip_postroute+0xba7/0xde0 security/selinux/hooks.c:5968 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook+0x471/0x7a0 include/linux/netfilter.h:269 NF_HOOK include/linux/netfilter.h:312 [inline] br_nf_post_routing+0x8bd/0x1190 net/bridge/br_netfilter_hooks.c:969 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook+0x45e/0x780 include/linux/netfilter.h:269 NF_HOOK include/linux/netfilter.h:312 [inline] br_forward_finish+0xcd/0x130 net/bridge/br_forward.c:66 br_nf_hook_thresh+0x301/0x410 net/bridge/br_netfilter_hooks.c:1170 br_nf_forward_finish+0x66a/0xba0 net/bridge/br_netfilter_hooks.c:665 NF_HOOK include/linux/netfilter.h:314 [inline] NF_HOOK include/linux/netfilter.h:308 [inline] br_nf_forward_ip.part.0+0x609/0x810 net/bridge/br_netfilter_hooks.c:719 br_nf_forward_ip net/bridge/br_netfilter_hooks.c:679 [inline] br_nf_forward+0xf0f/0x1be0 net/bridge/br_netfilter_hooks.c:776 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_slow+0xbb/0x200 net/netfilter/core.c:626 nf_hook+0x45e/0x780 include/linux/netfilter.h:269 NF_HOOK include/linux/netfilter.h:312 [inline] __br_forward+0x1be/0x5b0 net/bridge/br_forward.c:115 deliver_clone net/bridge/br_forward.c:131 [inline] maybe_deliver+0xf1/0x180 net/bridge/br_forward.c:190 br_flood+0x17c/0x650 net/bridge/br_forward.c:237 br_handle_frame_finish+0xe8e/0x1c20 net/bridge/br_input.c:220 br_nf_hook_thresh+0x301/0x410 net/bridge/br_netfilter_hooks.c:1170 br_nf_pre_routing_finish_ipv6+0x76a/0xfb0 net/bridge/br_netfilter_ipv6.c:154 NF_HOOK include/linux/netfilter.h:314 [inline] br_nf_pre_routing_ipv6+0x3cd/0x8c0 net/bridge/br_netfilter_ipv6.c:184 br_nf_pre_routing+0x860/0x15b0 net/bridge/br_netfilter_hooks.c:508 nf_hook_entry_hookfn include/linux/netfilter.h:154 [inline] nf_hook_bridge_pre net/bridge/br_input.c:282 [inline] br_handle_frame+0xad5/0x14a0 net/bridge/br_input.c:433 __netif_receive_skb_core.constprop.0+0xa23/0x4a00 net/core/dev.c:5773 __netif_receive_skb_one_core+0xb0/0x1e0 net/core/dev.c:5885 __netif_receive_skb+0x1d/0x160 net/core/dev.c:6000 process_backlog+0x442/0x15e0 net/core/dev.c:6352 __napi_poll.constprop.0+0xb7/0x550 net/core/dev.c:7324 napi_poll net/core/dev.c:7388 [inline] net_rx_action+0xa97/0x1010 net/core/dev.c:7510 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579 do_softirq kernel/softirq.c:480 [inline] do_softirq+0xb2/0xf0 kernel/softirq.c:467 __local_bh_enable_ip+0x100/0x120 kernel/softirq.c:407 spin_unlock_bh include/linux/spinlock.h:396 [inline] batadv_tt_global_purge net/batman-adv/translation-table.c:2250 [inline] batadv_tt_purge+0x25f/0xb80 net/batman-adv/translation-table.c:3510 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238 process_scheduled_works kernel/workqueue.c:3319 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400 kthread+0x3c2/0x780 kernel/kthread.c:464 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 net_ratelimit: 4496 callbacks suppressed batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e bridge0: received packet on bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:1c batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:0c batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:1c 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:9a:98:10:91:fa:35, vlan:0) audit_log_start: 34791 callbacks suppressed audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_lost=451668 audit_rate_limit=0 audit_backlog_limit=64 audit: audit_lost=451669 audit_rate_limit=0 audit_backlog_limit=64 audit: backlog limit exceeded audit: backlog limit exceeded audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_backlog=66 > audit_backlog_limit=64 audit: audit_lost=451670 audit_rate_limit=0 audit_backlog_limit=64 audit: audit_lost=451671 audit_rate_limit=0 audit_backlog_limit=64 net_ratelimit: 4705 callbacks suppressed 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:1b, vlan:0) batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:0c batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:1b batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e batman_adv: batadv0: Local translation table size (80) exceeds maximum packet size (-320); Ignoring new local tt entry: aa:aa:aa:aa:aa:3e