list_add double add: new=ffff88815524a0f8, prev=ffff8881cb383ae8, next=ffff88815524a0f8. ------------[ cut here ]------------ kernel BUG at lib/list_debug.c:31! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 11340 Comm: syz-executor.4 Not tainted 5.4.64-syzkaller-00160-g61eab9854560 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29 Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 8f 07 99 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 e2 eb 30 ff <0f> 0b 48 c7 c7 da 06 99 84 4c 89 e6 4c 89 f1 31 c0 e8 cc eb 30 ff RSP: 0018:ffff88816e49f650 EFLAGS: 00010046 RAX: 0000000000000058 RBX: ffff88815524a100 RCX: 83e660edad3d3100 RDX: ffffc90001ec8000 RSI: 000000000000294b RDI: 000000000000294c RBP: ffff88816e49f770 R08: ffffffff812ba23e R09: ffffed103b725e00 R10: ffffed103b725e00 R11: 0000000000000000 R12: ffff8881cb383ae8 R13: dffffc0000000000 R14: ffff88815524a0f8 R15: ffff88815524a0f8 FS: 00007f429a01f700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020020000 CR3: 000000015daf9002 CR4: 00000000001606e0 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] io_queue_async_work fs/io_uring.c:520 [inline] io_poll_wake+0x6f6/0xb90 fs/io_uring.c:1864 __wake_up_common+0x27a/0x450 kernel/sched/wait.c:93 __wake_up_common_lock kernel/sched/wait.c:123 [inline] __wake_up+0x145/0x210 kernel/sched/wait.c:142 wakeup_pipe_writers fs/splice.c:457 [inline] splice_from_pipe_next+0x2a3/0x440 fs/splice.c:560 __splice_from_pipe+0xfa/0x870 fs/splice.c:622 vmsplice_to_user fs/splice.c:1280 [inline] do_vmsplice+0x240/0xe70 fs/splice.c:1358 __do_sys_vmsplice fs/splice.c:1379 [inline] __se_sys_vmsplice+0x1cc/0x2c0 fs/splice.c:1361 do_syscall_64+0xcb/0x150 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45d5b9 Code: 5d 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f429a01ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000116 RAX: ffffffffffffffda RBX: 00000000000366c0 RCX: 000000000045d5b9 RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000003 RBP: 000000000118d028 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cfec R13: 00007fffbdf8792f R14: 00007f429a01f9c0 R15: 000000000118cfec Modules linked in: ---[ end trace 5126ad7d3bc4519c ]--- RIP: 0010:__list_add_valid+0x8a/0xc0 lib/list_debug.c:29 Code: 74 11 4d 39 f7 74 0c b0 01 5b 41 5c 41 5d 41 5e 41 5f c3 48 c7 c7 8f 07 99 84 4c 89 fe 4c 89 e2 4c 89 f1 31 c0 e8 e2 eb 30 ff <0f> 0b 48 c7 c7 da 06 99 84 4c 89 e6 4c 89 f1 31 c0 e8 cc eb 30 ff RSP: 0018:ffff88816e49f650 EFLAGS: 00010046 RAX: 0000000000000058 RBX: ffff88815524a100 RCX: 83e660edad3d3100 RDX: ffffc90001ec8000 RSI: 000000000000294b RDI: 000000000000294c RBP: ffff88816e49f770 R08: ffffffff812ba23e R09: ffffed103b725e00 R10: ffffed103b725e00 R11: 0000000000000000 R12: ffff8881cb383ae8 R13: dffffc0000000000 R14: ffff88815524a0f8 R15: ffff88815524a0f8 FS: 00007f429a01f700(0000) GS:ffff8881db900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020020000 CR3: 000000015daf9002 CR4: 00000000001606e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400