bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:3a:2c:ab:66:ca, vlan:0) rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P9988/1:b..l P10013/1:b..l P10011/1:b..l P10015/1:b..l rcu: (detected by 1, t=10503 jiffies, g=51641, q=283 ncpus=2) task:syz-executor state:R running task stack:26448 pid:10015 tgid:10015 ppid:5232 flags:0x00004002 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:__nr_to_section include/linux/mmzone.h:1881 [inline] RIP: 0010:__pfn_to_section include/linux/mmzone.h:1989 [inline] RIP: 0010:lookup_page_ext mm/page_ext.c:251 [inline] RIP: 0010:page_ext_get+0x107/0x2a0 mm/page_ext.c:526 Code: ff ff ff 00 00 00 48 89 ef 48 89 de e8 72 83 89 ff 48 39 eb 0f 87 91 01 00 00 48 c7 c0 60 f8 42 9a 48 c1 e8 03 42 80 3c 38 00 <74> 0c 48 c7 c7 60 f8 42 9a e8 ab 31 f3 ff 48 8b 05 74 8f 37 18 48 RSP: 0018:ffffc900045379b8 EFLAGS: 00000246 RAX: 1ffffffff3485f0c RBX: 0000000001bb6640 RCX: ffff88801eb59e00 RDX: 0000000000000000 RSI: 0000000001bb6640 RDI: 000000ffffffffc0 RBP: 000000ffffffffc0 R08: ffffffff820b68be R09: 1ffffffff2859300 R10: dffffc0000000000 R11: fffffbfff2859301 R12: 000000000006ed99 R13: ffffea0001bb6648 R14: ffffffff820b67f0 R15: dffffc0000000000 __reset_page_owner+0x30/0x430 mm/page_owner.c:290 reset_page_owner include/linux/page_owner.h:25 [inline] free_pages_prepare mm/page_alloc.c:1108 [inline] free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 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:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141 mm_alloc+0x23/0xc0 kernel/fork.c:1330 bprm_mm_init fs/exec.c:383 [inline] alloc_bprm+0x55b/0xe20 fs/exec.c:1548 do_execveat_common+0x18c/0x6f0 fs/exec.c:1903 do_execve fs/exec.c:2026 [inline] __do_sys_execve fs/exec.c:2102 [inline] __se_sys_execve fs/exec.c:2097 [inline] __x64_sys_execve+0x92/0xb0 fs/exec.c:2097 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: 0033:0x7fbb891b0ef7 RSP: 002b:00007fbb89f58e78 EFLAGS: 00000246 ORIG_RAX: 000000000000003b RAX: ffffffffffffffda RBX: 00007fbb89215a70 RCX: 00007fbb891b0ef7 RDX: 00007fff99032bc0 RSI: 00007fff99032e00 RDI: 00007fff99034ef2 RBP: 00007fff99032c30 R08: 00007fbb89f58f20 R09: 0000000000000000 R10: 0000000000000008 R11: 0000000000000246 R12: 000055556abc7250 R13: 0000000000000100 R14: 00007fff99032be0 R15: 00007fff99032990 task:syz-executor state:R running task stack:23072 pid:10011 tgid:10011 ppid:5232 flags:0x00004002 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 unwind_next_frame+0x18f8/0x22d0 arch/x86/kernel/unwind_orc.c:672 arch_stack_walk+0x11c/0x150 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __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:1108 [inline] free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 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:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_node_noprof+0x16b/0x320 mm/slub.c:4186 alloc_vmap_area+0x24f/0x2400 mm/vmalloc.c:1986 __get_vm_area_node+0x1a9/0x270 mm/vmalloc.c:3116 __vmalloc_node_range_noprof+0x3a6/0x13f0 mm/vmalloc.c:3788 vmalloc_user_noprof+0x74/0x80 mm/vmalloc.c:3982 kcov_ioctl+0x56/0x640 kernel/kcov.c:716 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:893 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: 0033:0x7f7b11d7dbfb RSP: 002b:00007ffc1b245c60 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000040000 RCX: 00007f7b11d7dbfb RDX: 0000000000040000 RSI: ffffffff80086301 RDI: 00000000000000da RBP: 00007f7b11f361c8 R08: 00000000000000d9 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000 task:syz-executor state:R running task stack:24128 pid:10013 tgid:10013 ppid:5232 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:__rcu_read_unlock+0x7d/0x110 kernel/rcu/tree_plugin.h:442 Code: 04 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 20 84 c0 0f 85 88 00 00 00 41 83 3f 00 75 29 42 0f b6 04 23 84 c0 75 62 41 8b 45 00 <3d> 00 00 00 40 73 0f 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc900035e7730 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 1ffff11004849088 RCX: ffffc900035e7603 RDX: 0000000000000002 RSI: ffffffff8c0adc40 RDI: ffffffff8c6100e0 RBP: 0000000000000001 R08: ffffffff901cfdef R09: 1ffffffff2039fbd R10: dffffc0000000000 R11: fffffbfff2039fbe R12: dffffc0000000000 R13: ffff888024248444 R14: ffff888024248000 R15: 00007fcf1f77c837 rcu_read_unlock include/linux/rcupdate.h:882 [inline] is_bpf_text_address+0x285/0x2a0 kernel/bpf/core.c:769 kernel_text_address+0xa7/0xe0 kernel/extable.c:125 __kernel_text_address+0xd/0x40 kernel/extable.c:79 unwind_get_return_address+0x4d/0x90 arch/x86/kernel/unwind_orc.c:369 arch_stack_walk+0xfd/0x150 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122 save_stack+0xfb/0x1f0 mm/page_owner.c:156 __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:1108 [inline] free_unref_page+0xcfb/0xf20 mm/page_alloc.c:2638 discard_slab mm/slub.c:2677 [inline] __put_partials+0xeb/0x130 mm/slub.c:3145 put_cpu_partial+0x17c/0x250 mm/slub.c:3220 __slab_free+0x2ea/0x3d0 mm/slub.c:4449 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:247 [inline] slab_post_alloc_hook mm/slub.c:4085 [inline] slab_alloc_node mm/slub.c:4134 [inline] kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4141 getname_flags+0xb7/0x540 fs/namei.c:139 user_path_at+0x24/0x60 fs/namei.c:3015 do_fchmodat fs/open.c:699 [inline] __do_sys_chmod fs/open.c:725 [inline] __se_sys_chmod fs/open.c:723 [inline] __x64_sys_chmod+0xd5/0x1a0 fs/open.c:723 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: 0033:0x7fcf1f77c837 RSP: 002b:00007ffd6d8b0288 EFLAGS: 00000206 ORIG_RAX: 000000000000005a RAX: ffffffffffffffda RBX: 00007ffd6d8b02f0 RCX: 00007fcf1f77c837 RDX: 0000000000000000 RSI: 00000000000001ff RDI: 00007ffd6d8b02f0 RBP: 0000000000000002 R08: 0000000000000004 R09: 0000000000000001 R10: 00007fcf206030b8 R11: 0000000000000206 R12: 00007ffd6d8b02f0 R13: 00007ffd6d8b02f8 R14: 0000000000000009 R15: 0000000000000000 task:syz.3.1188 state:R running task stack:26512 pid:9988 tgid:9988 ppid:6213 flags:0x00004004 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 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186 spin_unlock include/linux/spinlock.h:391 [inline] zap_pte_range mm/memory.c:1691 [inline] zap_pmd_range mm/memory.c:1739 [inline] zap_pud_range mm/memory.c:1768 [inline] zap_p4d_range mm/memory.c:1789 [inline] unmap_page_range+0x36b1/0x40e0 mm/memory.c:1810 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1900 exit_mmap+0x275/0xc40 mm/mmap.c:1864 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x28e0 kernel/exit.c:926 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 get_signal+0x16a3/0x1740 kernel/signal.c:2917 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [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+0xc9/0x370 kernel/entry/common.c:218 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc3c45b00e5 RSP: 002b:00007fc3c53b4f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6 RAX: fffffffffffffdfc RBX: 00007fc3c4735f80 RCX: 00007fc3c45b00e5 RDX: 00007fc3c53b4fc0 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fc3c45f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fc3c4735f80 R15: 00007fc3c485fa28 rcu: rcu_preempt kthread starved for 10556 jiffies! g51641 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0 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:25328 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: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.12.0-rc3-syzkaller-00044-g2f87d0916ce0 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:lock_is_held include/linux/lockdep.h:249 [inline] RIP: 0010:lockdep_rtnl_is_held+0xa/0x40 net/core/rtnetlink.c:177 Code: 48 c7 c6 20 2b cd 8f 5b e9 a3 fa 23 fb 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 e8 56 0a fc f7 <48> c7 c7 88 2b cd 8f be ff ff ff ff e8 e5 6c 2d 02 89 c3 31 ff 89 RSP: 0018:ffffc90000156110 EFLAGS: 00000246 RAX: ffffffff8998dcfa RBX: 0000000000000001 RCX: ffff88801ce8da00 RDX: 0000000000000100 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff888030f3a8b8 R08: ffffffff8a6c0d0f R09: ffffc90000156450 R10: ffffc90000156440 R11: fffff5200002ac56 R12: ffff888060401000 R13: ffff888030f3a8cf R14: 1ffff110061e7519 R15: 1ffff110061e7517 FS: 0000000000000000(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020103030 CR3: 000000000e734000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __in6_dev_get include/net/addrconf.h:330 [inline] ip6_ignore_linkdown include/net/addrconf.h:421 [inline] find_match+0xd8/0xc10 net/ipv6/route.c:744 __find_rr_leaf+0x275/0x8e0 net/ipv6/route.c:832 find_rr_leaf net/ipv6/route.c:853 [inline] rt6_select net/ipv6/route.c:897 [inline] fib6_table_lookup+0x413/0xbb0 net/ipv6/route.c:2195 ip6_pol_route+0x273/0x15d0 net/ipv6/route.c:2231 pol_lookup_func include/net/ip6_fib.h:616 [inline] fib6_rule_lookup+0x58c/0x790 net/ipv6/fib6_rules.c:117 ip6_route_input_lookup net/ipv6/route.c:2300 [inline] ip6_route_input+0x859/0xd90 net/ipv6/route.c:2596 ip6_rcv_finish+0x144/0x180 net/ipv6/ip6_input.c:77 ip_sabotage_in+0x203/0x290 net/bridge/br_netfilter_hooks.c:1018 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+0x29e/0x450 include/linux/netfilter.h:312 __netif_receive_skb_one_core net/core/dev.c:5666 [inline] __netif_receive_skb+0x1ea/0x650 net/core/dev.c:5779 netif_receive_skb_internal net/core/dev.c:5865 [inline] netif_receive_skb+0x1e8/0x890 net/core/dev.c:5924 NF_HOOK+0x9e/0x400 include/linux/netfilter.h:314 br_handle_frame_finish+0x18ed/0x1fe0 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:5560 __netif_receive_skb_one_core net/core/dev.c:5664 [inline] __netif_receive_skb+0x12f/0x650 net/core/dev.c:5779 process_backlog+0x662/0x15b0 net/core/dev.c:6111 __napi_poll+0xcb/0x490 net/core/dev.c:6775 napi_poll net/core/dev.c:6844 [inline] net_rx_action+0x89b/0x1240 net/core/dev.c:6966 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: 14642 callbacks suppressed bridge0: received packet on bridge_slave_0 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:ae:3a:2c:ab:66:ca, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 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:ae:3a:2c:ab:66:ca, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 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:ae:3a:2c:ab:66:ca, vlan:0) net_ratelimit: 23882 callbacks suppressed bridge0: received packet on veth0_to_bridge with own address as source address (addr:ae:3a:2c:ab:66:ca, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 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:ae:3a:2c:ab:66:ca, 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 bridge_slave_0 with own address as source address (addr:aa:aa:aa:aa:aa:1b, vlan:0) bridge0: received packet on bridge_slave_0 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:ae:3a:2c:ab:66:ca, vlan:0) bridge0: received packet on veth0_to_bridge with own address as source address (addr:aa:aa:aa:aa:aa:0c, vlan:0)