list_add corruption. next->prev should be prev (ffff8801db11d130), but was dead000000000200. (next=ffff88018761dca0). ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:25! invalid opcode: 0000 [#1] SMP KASAN CPU: 1 PID: 22864 Comm: syz-executor1 Not tainted 4.18.0+ #209 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 83 26 5a fe e9 68 ff ff ff e8 79 26 5a fe eb c9 4c 89 e7 e8 6f 26 5a fe eb 97 48 89 d9 48 c7 c7 60 b1 3a 87 e8 e2 03 02 fe <0f> 0b 48 89 f1 48 c7 c7 20 b2 3a 87 48 89 de e8 ce 03 02 fe 0f 0b RSP: 0018:ffff88018584edd8 EFLAGS: 00010086 RAX: 0000000000000075 RBX: ffff88018761dca0 RCX: ffffc9000e690000 RDX: 0000000000000000 RSI: ffffffff8163aa01 RDI: 0000000000000001 RBP: ffff88018584edf0 R08: ffff880191b96400 R09: ffffed003b625008 R10: ffffed003b625008 R11: ffff8801db128047 R12: ffff88018761dca0 R13: ffff880187618500 R14: ffff88018761dca0 R15: ffff8801db11d130 FS: 00007f1748826700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000013127d0 CR3: 000000018e143000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008000 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+0x205/0xfe0 arch/x86/kvm/vmx.c:3073 kvm_arch_vcpu_load+0x22b/0x940 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+0x50d/0x870 kernel/sched/core.c:2679 context_switch kernel/sched/core.c:2828 [inline] __schedule+0x884/0x1df0 kernel/sched/core.c:3473 schedule+0xfb/0x450 kernel/sched/core.c:3517 freezable_schedule include/linux/freezer.h:172 [inline] futex_wait_queue_me+0x3f9/0x840 kernel/futex.c:2530 futex_wait+0x45b/0xa20 kernel/futex.c:2645 do_futex+0x336/0x27d0 kernel/futex.c:3527 __do_sys_futex kernel/futex.c:3587 [inline] __se_sys_futex kernel/futex.c:3555 [inline] __x64_sys_futex+0x472/0x6a0 kernel/futex.c:3555 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457089 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:00007f1748825cf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00000000009301e8 RCX: 0000000000457089 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000009301e8 RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000009301ec R13: 00007ffdc5f3a2bf R14: 00007f17488269c0 R15: 0000000000000002 Modules linked in: Dumping ftrace buffer: (ftrace buffer empty) ---[ end trace 52e1136223121599 ]--- RIP: 0010:__list_add_valid.cold.0+0xf/0x25 lib/list_debug.c:23 Code: e8 83 26 5a fe e9 68 ff ff ff e8 79 26 5a fe eb c9 4c 89 e7 e8 6f 26 5a fe eb 97 48 89 d9 48 c7 c7 60 b1 3a 87 e8 e2 03 02 fe <0f> 0b 48 89 f1 48 c7 c7 20 b2 3a 87 48 89 de e8 ce 03 02 fe 0f 0b RSP: 0018:ffff88018584edd8 EFLAGS: 00010086 RAX: 0000000000000075 RBX: ffff88018761dca0 RCX: ffffc9000e690000 RDX: 0000000000000000 RSI: ffffffff8163aa01 RDI: 0000000000000001 RBP: ffff88018584edf0 R08: ffff880191b96400 R09: ffffed003b625008 R10: ffffed003b625008 R11: ffff8801db128047 R12: ffff88018761dca0 R13: ffff880187618500 R14: ffff88018761dca0 R15: ffff8801db11d130 FS: 00007f1748826700(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000013127d0 CR3: 000000018e143000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000008000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400