IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 ================================================================== BUG: KMSAN: uninit-value in rcu_cblist_dequeue+0x1bb/0x290 kernel/rcu/rcu_segcblist.c:54 CPU: 1 PID: 4970 Comm: blkid Not tainted 4.16.0+ #87 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:53 kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067 __msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:683 rcu_cblist_dequeue+0x1bb/0x290 kernel/rcu/rcu_segcblist.c:54 rcu_do_batch kernel/rcu/tree.c:2672 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2933 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2900 [inline] rcu_process_callbacks+0x17cf/0x2070 kernel/rcu/tree.c:2917 __do_softirq+0x56d/0x93d 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:541 smp_apic_timer_interrupt+0x64/0x90 arch/x86/kernel/apic/apic.c:1055 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:857 RIP: 0010:native_restore_fl arch/x86/include/asm/irqflags.h:37 [inline] RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:78 [inline] RIP: 0010:__msan_poison_alloca+0x14c/0x1d0 mm/kmsan/kmsan_instr.c:651 RSP: 0000:ffff8801a42bfa20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff12 RAX: 00000000b8800006 RBX: 00000000b8800006 RCX: ffff8801a42bfa60 RDX: 0000000000000004 RSI: 0000000000000004 RDI: 00000000776b7604 RBP: ffff8801a42bfac0 R08: 0000000001080020 R09: 0000000000000002 R10: 0000000000000000 R11: ffff8801a42b0000 R12: 0000000000000000 R13: ffffffff8aa7b990 R14: 0000000000000246 R15: ffff8801a4ef8000 should_resched arch/x86/include/asm/preempt.h:97 [inline] _cond_resched+0x2b/0xd0 kernel/sched/core.c:4931 slab_pre_alloc_hook mm/slab.h:420 [inline] slab_alloc_node mm/slub.c:2663 [inline] slab_alloc mm/slub.c:2745 [inline] kmem_cache_alloc+0xf9/0xb90 mm/slub.c:2750 anon_vma_alloc mm/rmap.c:81 [inline] __anon_vma_prepare+0x1c6/0xb10 mm/rmap.c:189 anon_vma_prepare include/linux/rmap.h:153 [inline] do_anonymous_page mm/memory.c:3169 [inline] handle_pte_fault mm/memory.c:3977 [inline] __handle_mm_fault mm/memory.c:4103 [inline] handle_mm_fault+0x5788/0x7e50 mm/memory.c:4140 __do_page_fault+0xec4/0x1a10 arch/x86/mm/fault.c:1423 do_page_fault+0xd3/0x260 arch/x86/mm/fault.c:1500 page_fault+0x45/0x50 arch/x86/entry/entry_64.S:1151 RIP: 0033:0x7f931e616c57 RSP: 002b:00007ffcbf34fe00 EFLAGS: 00010202 RAX: 0000000000000005 RBX: 00007ffcbf34feb0 RCX: 00007f931e61ac53 RDX: 00007ffcbf34fee8 RSI: 00007f931e6044b0 RDI: 00007ffcbf34feb8 RBP: 00007f931e6044b0 R08: 0000000000000002 R09: 00000024907abff8 R10: 000000006fffff6e R11: 000000006ffffeff R12: 00007f931e602a78 R13: 00007f931e602000 R14: 00007f931e602a78 R15: 00007f931e602380 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 rcu_cblist_dequeue+0x1e0/0x290 kernel/rcu/rcu_segcblist.c:54 rcu_do_batch kernel/rcu/tree.c:2671 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2933 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2900 [inline] rcu_process_callbacks+0x15cd/0x2070 kernel/rcu/tree.c:2917 __do_softirq+0x56d/0x93d kernel/softirq.c:285 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_save_stack mm/kmsan/kmsan.c:293 [inline] kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684 __msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:528 rcu_segcblist_enqueue+0x24c/0x2d0 kernel/rcu/rcu_segcblist.c:150 __call_rcu+0x227/0xef0 kernel/rcu/tree.c:3060 call_rcu_sched+0x32/0x40 kernel/rcu/tree.c:3100 free_pid+0x441/0x450 kernel/pid.c:156 __change_pid kernel/pid.c:294 [inline] detach_pid+0x35a/0x370 kernel/pid.c:299 __unhash_process kernel/exit.c:75 [inline] __exit_signal kernel/exit.c:156 [inline] release_task+0x10a0/0x2530 kernel/exit.c:200 exit_notify kernel/exit.c:736 [inline] do_exit+0x2d91/0x38d0 kernel/exit.c:887 do_group_exit+0x1a0/0x360 kernel/exit.c:970 get_signal+0x1320/0x1f20 kernel/signal.c:2469 do_signal+0xb8/0x1c80 arch/x86/kernel/signal.c:809 exit_to_usermode_loop arch/x86/entry/common.c:162 [inline] prepare_exit_to_usermode+0x271/0x3a0 arch/x86/entry/common.c:196 syscall_return_slowpath+0xe9/0x700 arch/x86/entry/common.c:265 do_syscall_64+0x36d/0x430 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline] kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188 kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314 kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756 alloc_pid+0x7f/0xce0 kernel/pid.c:168 copy_process+0x3fb7/0x9bb0 kernel/fork.c:1808 _do_fork+0x311/0xf00 kernel/fork.c:2088 SYSC_clone+0xf6/0x110 kernel/fork.c:2195 SyS_clone+0x77/0xa0 kernel/fork.c:2189 do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x3d/0xa2 ==================================================================