list_del corruption, ffff88809e9d8db0->next is LIST_POISON1 (dead000000000100) ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:45! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7714 Comm: kworker/1:4 Not tainted 5.1.0-rc2 #36 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events p9_read_work RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45 Code: e8 75 c0 29 fe 0f 0b 4c 89 f6 48 c7 c7 a0 d8 a1 87 e8 64 c0 29 fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 e0 d7 a1 87 e8 50 c0 29 fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 40 d8 a1 87 e8 3c c0 29 fe 0f 0b RSP: 0018:ffff88805c43fc48 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff88809e9d8d00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815ae3f6 RDI: ffffed100b887f7b RBP: ffff88805c43fc60 R08: 000000000000004e R09: ffffed1015d25011 R10: ffffed1015d25010 R11: ffff8880ae928087 R12: dead000000000200 R13: dead000000000100 R14: ffff88809e9d8db0 R15: ffff88809e9d8db0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738020 CR3: 00000000a6705000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __list_del_entry include/linux/list.h:117 [inline] list_del include/linux/list.h:125 [inline] p9_read_work+0x9e5/0x1050 net/9p/trans_fd.c:378 process_one_work+0x98e/0x1790 kernel/workqueue.c:2269 worker_thread+0x98/0xe40 kernel/workqueue.c:2415 kthread+0x357/0x430 kernel/kthread.c:253 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 Modules linked in: ---[ end trace a385286b88a37a0b ]--- RIP: 0010:__list_del_entry_valid.cold+0x23/0x4f lib/list_debug.c:45 Code: e8 75 c0 29 fe 0f 0b 4c 89 f6 48 c7 c7 a0 d8 a1 87 e8 64 c0 29 fe 0f 0b 4c 89 ea 4c 89 f6 48 c7 c7 e0 d7 a1 87 e8 50 c0 29 fe <0f> 0b 4c 89 e2 4c 89 f6 48 c7 c7 40 d8 a1 87 e8 3c c0 29 fe 0f 0b RSP: 0018:ffff88805c43fc48 EFLAGS: 00010286 RAX: 000000000000004e RBX: ffff88809e9d8d00 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff815ae3f6 RDI: ffffed100b887f7b RBP: ffff88805c43fc60 R08: 000000000000004e R09: ffffed1015d25011 R10: ffffed1015d25010 R11: ffff8880ae928087 R12: dead000000000200 R13: dead000000000100 R14: ffff88809e9d8db0 R15: ffff88809e9d8db0 FS: 0000000000000000(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000738020 CR3: 00000000a6705000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400