bridge0: received packet on veth0_to_bridge with own address as source address (addr:1a:c2:4b:74:b8:8f, vlan:0) bridge0: received packet on €Â 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): P5204/1:b..l P5186/1:b..l rcu: (detected by 0, t=10503 jiffies, g=38309, q=1618 ncpus=2) task:syslogd state:R running task stack:22784 pid:5186 tgid:5186 ppid:1 flags:0x00000002 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:arch___clear_bit arch/x86/include/asm/bitops.h:94 [inline] RIP: 0010:___clear_bit include/asm-generic/bitops/instrumented-non-atomic.h:45 [inline] RIP: 0010:__update_page_owner_free_handle mm/page_owner.c:272 [inline] RIP: 0010:__reset_page_owner+0x157/0x430 mm/page_owner.c:298 Code: 00 00 4c 8b 35 ba 76 97 0c 4d 01 fe 83 7c 24 0c 00 74 41 e8 6b 41 90 ff 4c 89 ff be 08 00 00 00 e8 1e a8 f6 ff 49 0f ba 37 01 <4c> 89 e9 4d 8d 6e 0c 4c 89 e8 48 c1 e8 03 48 89 cb 0f b6 04 08 84 RSP: 0018:ffffc90010707678 EFLAGS: 00000257 RAX: ffffffff820f4201 RBX: 0000000000000008 RCX: ffffffff820f42c2 RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88801f01e190 RBP: 0000000000001442 R08: ffff88801f01e197 R09: 1ffff11003e03c32 R10: dffffc0000000000 R11: ffffed1003e03c33 R12: 0000000000000005 R13: dffffc0000000000 R14: ffff88801f01e198 R15: ffff88801f01e190 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 __slab_free+0x2c2/0x380 mm/slub.c:4524 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] kmem_cache_alloc_noprof+0x1d9/0x380 mm/slub.c:4175 alloc_empty_file+0x9e/0x1d0 fs/file_table.c:228 path_openat+0x107/0x3590 fs/namei.c:3973 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: 0033:0x7f4e497039a4 RSP: 002b:00007ffc11fcc2c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055fd97c53910 RCX: 00007f4e497039a4 RDX: 0000000000000d41 RSI: 00007f4e498a2443 RDI: 00000000ffffff9c RBP: 00007f4e498a2443 R08: 0000000000000001 R09: 0000000000000000 R10: 00000000000001b6 R11: 0000000000000246 R12: 0000000000000d41 R13: 00000000678569b8 R14: 0000000000000003 R15: 000055fd97c53a60 task:udevd state:R running task stack:21376 pid:5204 tgid:5204 ppid:1 flags:0x00000002 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:filter_irq_stacks+0x2e/0xa0 kernel/stacktrace.c:396 Code: 55 41 57 41 56 41 55 41 54 53 85 f6 74 72 49 89 fe 41 89 f4 45 31 ff 48 c7 c5 30 02 e0 8b 49 c7 c5 e0 21 cf 8b 48 89 fb eb 0c <49> ff c7 48 83 c3 08 4d 39 fc 74 4f 48 89 d8 48 c1 e8 03 48 b9 00 RSP: 0018:ffffc90003526fb8 EFLAGS: 00000283 RAX: ffffffff847749e8 RBX: ffffc900035270f0 RCX: dffffc0000000000 RDX: 0000000000002800 RSI: 0000000000000010 RDI: ffffc900035270a0 RBP: ffffffff8be00230 R08: 000000000000000f R09: ffffc90003526fd0 R10: ffffc90003526f30 R11: ffffffff818b4a10 R12: 0000000000000010 R13: ffffffff8bcf21e0 R14: ffffc900035270a0 R15: 000000000000000a stack_depot_save_flags+0x37/0x940 lib/stackdepot.c:609 save_stack+0x109/0x1f0 mm/page_owner.c:157 __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_kmalloc+0x23/0xb0 mm/kasan/common.c:385 kasan_kmalloc include/linux/kasan.h:260 [inline] __do_kmalloc_node mm/slub.c:4298 [inline] __kmalloc_noprof+0x285/0x4c0 mm/slub.c:4310 kmalloc_noprof include/linux/slab.h:905 [inline] kzalloc_noprof include/linux/slab.h:1037 [inline] tomoyo_encode2 security/tomoyo/realpath.c:45 [inline] tomoyo_encode+0x26f/0x540 security/tomoyo/realpath.c:80 tomoyo_realpath_from_path+0x59e/0x5e0 security/tomoyo/realpath.c:283 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: 0033:0x7f043fb1a477 RSP: 002b:00007ffccc8eb5a8 EFLAGS: 00000287 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 000055db45570d00 RCX: 00007f043fb1a477 RDX: 0000000000090800 RSI: 000055db4557d730 RDI: 00000000ffffff9c RBP: 000055db455901b0 R08: 0000000000090800 R09: 000055db4557d730 R10: 0000000000000000 R11: 0000000000000287 R12: 000055db4557d730 R13: 00000000000000ff R14: 000055db0a8711c4 R15: 0000000000000000 rcu: rcu_preempt kthread starved for 10591 jiffies! g38309 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: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 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.13.0-rc6-syzkaller-00970-g7d0da8f86234 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:xt_get_this_cpu_counter include/linux/netfilter/x_tables.h:436 [inline] RIP: 0010:ip6t_do_table+0xca8/0x18a0 net/ipv6/netfilter/ip6_tables.c:320 Code: 56 f8 95 05 bf 01 00 00 00 89 de e8 52 34 1b f7 83 fb 01 76 7b 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 4c 89 e7 e8 0e 94 81 f7 4d 8b 24 24 e8 b5 f3 47 01 89 c3 41 RSP: 0018:ffffc900001e6fc0 EFLAGS: 00000246 RAX: 1ffff1100baf2e1b RBX: 0000000000000002 RCX: dffffc0000000000 RDX: ffff88801d2f8000 RSI: 0000000000000002 RDI: 0000000000000001 RBP: ffffc900001e71a8 R08: ffffffff8a84540e R09: 0000000000000000 R10: ffffc900001e7110 R11: fffff5200003ce26 R12: ffff88805d7970d8 R13: 1ffff1100baf2e19 R14: ffff88805d7970e8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efc98474988 CR3: 00000000301b0000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: 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 include/linux/netfilter.h:312 [inline] br_nf_pre_routing_ipv6+0x63e/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:282 [inline] br_handle_frame+0x9f3/0x1530 net/bridge/br_input.c:433 __netif_receive_skb_core+0x13e7/0x4540 net/core/dev.c:5619 __netif_receive_skb_one_core net/core/dev.c:5723 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5838 process_backlog+0x662/0x15b0 net/core/dev.c:6170 __napi_poll+0xcb/0x490 net/core/dev.c:6953 napi_poll net/core/dev.c:7022 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:7144 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: 24218 callbacks suppressed bridge0: received packet on €Â 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:1a:c2:4b:74:b8:8f, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on €Â 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:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on €Â 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:1a:c2:4b:74:b8:8f, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) net_ratelimit: 27731 callbacks suppressed bridge0: received packet on €Â 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:1a:c2:4b:74:b8:8f, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on €Â 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:aa:aa:aa:aa:aa:0c, vlan:0) bridge0: received packet on €Â 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:1a:c2:4b:74:b8:8f, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on €Â with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)