list_del corruption, ffff88809335f810->prev is LIST_POISON2 (dead000000000122)
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:48!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 11380 Comm: syz-executor.1 Not tainted 5.9.0-rc2-next-20200828-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid.cold+0x37/0x55 lib/list_debug.c:48
Code: bc fd 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 64 94 88 e8 aa ab bc fd 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 00 65 94 88 e8 96 ab bc fd <0f> 0b 48 89 ee 48 c7 c7 c0 65 94 88 e8 85 ab bc fd 0f 0b cc cc cc
RSP: 0018:ffffc90009bb7e10 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88809cebb000 RCX: 0000000000000000
RDX: ffff88808e4ec380 RSI: ffffffff815daa77 RDI: fffff52001376fb4
RBP: ffff88809335f810 R08: 000000000000004e R09: ffff8880ae7318a7
R10: 0000000000000000 R11: 00000000000b85d8 R12: dead000000000122
R13: ffff88809cebb0a0 R14: ffff88809335f810 R15: ffff88809335f818
FS:  00007f08b3a9d700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001d07a98 CR3: 00000000a2dc3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_del_entry include/linux/list.h:132 [inline]
 list_del_rcu include/linux/rculist.h:166 [inline]
 mousedev_detach_client drivers/input/mousedev.c:515 [inline]
 mousedev_release+0x7d/0x1f0 drivers/input/mousedev.c:525
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:140 [inline]
 exit_to_user_mode_prepare+0x195/0x1c0 kernel/entry/common.c:167
 syscall_exit_to_user_mode+0x59/0x2b0 kernel/entry/common.c:242
 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:00007f08b3a9cc78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9
RAX: 0000000000000000 RBX: 0000000000002ac0 RCX: 000000000045d5b9
RDX: 0000000000000004 RSI: 0000000000000001 RDI: 0000000000000005
RBP: 000000000118cf88 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020000040 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffdd621bf4f R14: 00007f08b3a9d9c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace 177265ff47ad14b0 ]---
RIP: 0010:__list_del_entry_valid.cold+0x37/0x55 lib/list_debug.c:48
Code: bc fd 0f 0b 4c 89 ea 48 89 ee 48 c7 c7 a0 64 94 88 e8 aa ab bc fd 0f 0b 4c 89 e2 48 89 ee 48 c7 c7 00 65 94 88 e8 96 ab bc fd <0f> 0b 48 89 ee 48 c7 c7 c0 65 94 88 e8 85 ab bc fd 0f 0b cc cc cc
RSP: 0018:ffffc90009bb7e10 EFLAGS: 00010286
RAX: 000000000000004e RBX: ffff88809cebb000 RCX: 0000000000000000
RDX: ffff88808e4ec380 RSI: ffffffff815daa77 RDI: fffff52001376fb4
RBP: ffff88809335f810 R08: 000000000000004e R09: ffff8880ae7318a7
R10: 0000000000000000 R11: 00000000000b85d8 R12: dead000000000122
R13: ffff88809cebb0a0 R14: ffff88809335f810 R15: ffff88809335f818
FS:  00007f08b3a9d700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001d07a98 CR3: 00000000a2dc3000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400