IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready ================================================================== BUG: KMSAN: uninit-value in rcu_cblist_dequeue+0x233/0x270 kernel/rcu/rcu_segcblist.c:55 CPU: 1 PID: 4550 Comm: syz-executor0 Not tainted 4.17.0+ #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1117 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:620 rcu_cblist_dequeue+0x233/0x270 kernel/rcu/rcu_segcblist.c:55 rcu_do_batch kernel/rcu/tree.c:2673 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2930 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2897 [inline] rcu_process_callbacks+0x19a7/0x2060 kernel/rcu/tree.c:2914 __do_softirq+0x592/0x979 kernel/softirq.c:285 invoke_softirq kernel/softirq.c:365 [inline] irq_exit+0x202/0x240 kernel/softirq.c:405 exiting_irq+0xe/0x10 arch/x86/include/asm/apic.h:525 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:863 RIP: 0010:compound_head include/linux/page-flags.h:142 [inline] RIP: 0010:get_page include/linux/mm.h:848 [inline] RIP: 0010:copy_one_pte mm/memory.c:1040 [inline] RIP: 0010:copy_pte_range mm/memory.c:1102 [inline] RIP: 0010:copy_pmd_range mm/memory.c:1153 [inline] RIP: 0010:copy_pud_range mm/memory.c:1187 [inline] RIP: 0010:copy_p4d_range mm/memory.c:1209 [inline] RIP: 0010:copy_page_range+0x1c24/0x3f50 mm/memory.c:1271 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready RSP: 0018:ffff8801348af850 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: ffffea0000000000 RBX: ffffea0007aa2ae0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 RBP: ffff8801348afb08 R08: 8000000147072007 R09: ffff8801294c6000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000018 R13: ffffea0007aa2ac0 R14: 0000000000147072 R15: ffff8801294c69d0 dup_mmap kernel/fork.c:512 [inline] dup_mm kernel/fork.c:1235 [inline] copy_mm kernel/fork.c:1289 [inline] copy_process+0x6d9b/0x9be0 kernel/fork.c:1795 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready _do_fork+0x353/0xf60 kernel/fork.c:2089 __do_sys_clone kernel/fork.c:2196 [inline] __se_sys_clone kernel/fork.c:2190 [inline] __x64_sys_clone+0x15e/0x1b0 kernel/fork.c:2190 IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x41f949 RSP: 002b:0000000000a3fad0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000041f949 RDX: 0000000000a3fadc RSI: 0000000000000000 RDI: 0000000000100011 RBP: 0000000000a3fc80 R08: 0000000000a44a60 R09: 0000000000000025 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000a3fe60 R13: 0000000000a3fe28 R14: 0000000000000000 R15: 0000000000000000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline] kmsan_save_stack mm/kmsan/kmsan.c:294 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:685 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:464 rcu_segcblist_enqueue+0x24c/0x2d0 kernel/rcu/rcu_segcblist.c:150 __call_rcu+0x227/0xef0 kernel/rcu/tree.c:3057 call_rcu_sched+0x32/0x40 kernel/rcu/tree.c:3097 file_free fs/file_table.c:55 [inline] __fput+0x93c/0xa30 fs/file_table.c:226 ____fput+0x37/0x40 fs/file_table.c:243 task_work_run+0x22e/0x2b0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x110e/0x3930 kernel/exit.c:867 do_group_exit+0x1a0/0x360 kernel/exit.c:970 __do_sys_exit_group+0x21/0x30 kernel/exit.c:981 __se_sys_exit_group+0x14/0x20 kernel/exit.c:979 __x64_sys_exit_group+0x4c/0x50 kernel/exit.c:979 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:279 [inline] kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:189 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:315 kmem_cache_alloc+0xa97/0xb70 mm/slub.c:2772 __d_alloc+0x8b/0xe40 fs/dcache.c:1638 d_alloc fs/dcache.c:1722 [inline] d_alloc_parallel+0x1a8/0x22e0 fs/dcache.c:2519 IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready __lookup_slow+0x18c/0x750 fs/namei.c:1613 lookup_slow fs/namei.c:1647 [inline] walk_component+0x33c/0xbb0 fs/namei.c:1769 lookup_last fs/namei.c:2237 [inline] path_lookupat+0x3b4/0x1150 fs/namei.c:2287 filename_lookup+0x2bb/0xa60 fs/namei.c:2321 user_path_at_empty+0x123/0x140 fs/namei.c:2555 user_path_at include/linux/namei.h:57 [inline] vfs_statx fs/stat.c:185 [inline] vfs_stat include/linux/fs.h:3078 [inline] __do_sys_newstat fs/stat.c:337 [inline] __se_sys_newstat+0xd4/0x330 fs/stat.c:333 __x64_sys_newstat+0x92/0xc0 fs/stat.c:333 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 ==================================================================