EXT4-fs (sda1): resizing filesystem from 524032 to 524032 blocks list_add corruption. next->prev should be prev (ffff8801dae1d130), but was dead000000000200. (next=ffff8801902dd920). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 12729 Comm: syz-executor4 Not tainted 4.19.0-rc2+ #4 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid.cold.0+0xf/0x25 lib/list_debug.c:23 Code: e8 73 be 31 fe e9 68 ff ff ff e8 69 be 31 fe eb c9 4c 89 e7 e8 5f be 31 fe eb 97 48 89 d9 48 c7 c7 e0 9e 44 88 e8 a2 6d d4 fd <0f> 0b 48 89 f1 48 c7 c7 a0 9f 44 88 48 89 de e8 8e 6d d4 fd 0f 0b RSP: 0018:ffff88018bdb6a58 EFLAGS: 00010082 RAX: 0000000000000075 RBX: ffff8801902dd920 RCX: ffffc9000e8b3000 RDX: 0000000000000000 RSI: ffffffff8164f835 RDI: 0000000000000005 RBP: ffff88018bdb6a70 R08: ffff8801be1ca6c0 R09: ffffed003b5c4fe8 R10: ffffed003b5c4fe8 R11: ffff8801dae27f47 R12: ffff8801902dd920 R13: ffff8801902d8180 R14: ffff8801902dd920 R15: ffff8801dae1d130 FS: 00007f64b3a51700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f64b3a700b8 CR3: 00000001c1361000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_add include/linux/list.h:60 [inline] list_add include/linux/list.h:79 [inline] vmx_vcpu_load+0x21f/0x1030 arch/x86/kvm/vmx.c:3073 kvm_arch_vcpu_load+0x247/0x970 arch/x86/kvm/x86.c:3106 kvm_sched_in+0x82/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3975 __fire_sched_in_preempt_notifiers kernel/sched/core.c:2481 [inline] fire_sched_in_preempt_notifiers kernel/sched/core.c:2487 [inline] finish_task_switch+0x56e/0x900 kernel/sched/core.c:2679 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x874/0x1ed0 kernel/sched/core.c:3473 preempt_schedule_notrace+0x70/0x130 kernel/sched/core.c:3671 ___preempt_schedule_notrace+0x16/0x31 rcu_is_watching+0x23/0x30 kernel/rcu/tree.c:1026 rcu_read_lock_held+0x87/0xc0 kernel/rcu/update.c:281 task_css include/linux/cgroup.h:477 [inline] mem_cgroup_from_task mm/memcontrol.c:815 [inline] get_mem_cgroup_from_mm+0x316/0x440 mm/memcontrol.c:844 get_mem_cgroup_from_current mm/memcontrol.c:890 [inline] memcg_kmem_charge+0x118/0x300 mm/memcontrol.c:2621 __alloc_pages_nodemask+0x72e/0xde0 mm/page_alloc.c:4394 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093 alloc_pages include/linux/gfp.h:509 [inline] __get_free_pages+0xc/0x40 mm/page_alloc.c:4414 mmu_topup_memory_cache_page arch/x86/kvm/mmu.c:945 [inline] mmu_topup_memory_caches+0x1ee/0x390 arch/x86/kvm/mmu.c:967 kvm_mmu_load+0x21/0xfa0 arch/x86/kvm/mmu.c:4957 kvm_mmu_reload arch/x86/kvm/mmu.h:86 [inline] vcpu_enter_guest+0x3dee/0x62e0 arch/x86/kvm/x86.c:7495 vcpu_run arch/x86/kvm/x86.c:7693 [inline] kvm_arch_vcpu_ioctl_run+0x375/0x16e0 arch/x86/kvm/x86.c:7870 kvm_vcpu_ioctl+0x72b/0x1150 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2590 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0x1de/0x1720 fs/ioctl.c:685 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:702 __do_sys_ioctl fs/ioctl.c:709 [inline] __se_sys_ioctl fs/ioctl.c:707 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:707 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457099 Code: fd b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f64b3a50c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f64b3a516d4 RCX: 0000000000457099 RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 0000000000000005 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004cf730 R14: 00000000004c59b9 R15: 0000000000000002 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 63b807d725e1e889 ]--- RIP: 0010:__list_add_valid.cold.0+0xf/0x25 lib/list_debug.c:23 Code: e8 73 be 31 fe e9 68 ff ff ff e8 69 be 31 fe eb c9 4c 89 e7 e8 5f be 31 fe eb 97 48 89 d9 48 c7 c7 e0 9e 44 88 e8 a2 6d d4 fd <0f> 0b 48 89 f1 48 c7 c7 a0 9f 44 88 48 89 de e8 8e 6d d4 fd 0f 0b RSP: 0018:ffff88018bdb6a58 EFLAGS: 00010082 RAX: 0000000000000075 RBX: ffff8801902dd920 RCX: ffffc9000e8b3000 RDX: 0000000000000000 RSI: ffffffff8164f835 RDI: 0000000000000005 RBP: ffff88018bdb6a70 R08: ffff8801be1ca6c0 R09: ffffed003b5c4fe8 R10: ffffed003b5c4fe8 R11: ffff8801dae27f47 R12: ffff8801902dd920 R13: ffff8801902d8180 R14: ffff8801902dd920 R15: ffff8801dae1d130 FS: 00007f64b3a51700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f64b3a700b8 CR3: 00000001c1361000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400