list_del corruption. prev->next should be ffff8800936195d8, but was 0000000000000000
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:53!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 11146 Comm: syz-executor3 Not tainted 4.18.0-rc4+ #27
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_del_entry_valid+0x37c/0x440 lib/list_debug.c:51
Code: 48 c7 81 80 0c 00 00 00 00 00 00 c7 81 20 03 00 00 00 00 00 00 48 c7 c7 ce f6 dc 8a 31 c0 48 8b 75 c0 4c 89 e2 e8 64 ae 2b fd <0f> 0b 66 90 eb fe 44 89 f7 e8 16 60 ae fd e9 88 fd ff ff 48 85 db 
RSP: 0018:ffff8800a941f990 EFLAGS: 00010246
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 49375adfb46da400
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000cbef440
RBP: ffff8800a941f9e8 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8675b2c0 R12: 0000000000000000
R13: ffffffff8b310900 R14: 0000000000000000 R15: 0000000000000000
FS:  00000000023ea940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000087762000 CR4: 00000000001406e0
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]
 cma_cancel_listens drivers/infiniband/core/cma.c:1580 [inline]
 cma_cancel_operation+0x69a/0xea0 drivers/infiniband/core/cma.c:1608
 rdma_destroy_id+0x1b4/0x1840 drivers/infiniband/core/cma.c:1672
 ucma_close+0x29a/0x450 drivers/infiniband/core/ucma.c:1759
 __fput+0x458/0xa30 fs/file_table.c:209
 ____fput+0x37/0x40 fs/file_table.c:243
 task_work_run+0x22e/0x2b0 kernel/task_work.c:113
 tracehook_notify_resume include/linux/tracehook.h:192 [inline]
 exit_to_usermode_loop arch/x86/entry/common.c:166 [inline]
 prepare_exit_to_usermode+0x35d/0x430 arch/x86/entry/common.c:197
 syscall_return_slowpath+0x108/0x800 arch/x86/entry/common.c:268
 do_syscall_64+0x1ad/0x230 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x40fb91
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 
RSP: 002b:0000000000a3eab0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000016 RCX: 000000000040fb91
RDX: 0000000000000000 RSI: 0000000000730e10 RDI: 0000000000000015
RBP: 0000000000000013 R08: 0000000000a3ea30 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000a3f160 R15: 00000000007034c0
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 61d92f2d44600f90 ]---
RIP: 0010:__list_del_entry_valid+0x37c/0x440 lib/list_debug.c:51
Code: 48 c7 81 80 0c 00 00 00 00 00 00 c7 81 20 03 00 00 00 00 00 00 48 c7 c7 ce f6 dc 8a 31 c0 48 8b 75 c0 4c 89 e2 e8 64 ae 2b fd <0f> 0b 66 90 eb fe 44 89 f7 e8 16 60 ae fd e9 88 fd ff ff 48 85 db 
RSP: 0018:ffff8800a941f990 EFLAGS: 00010246
RAX: 0000000000000054 RBX: 0000000000000000 RCX: 49375adfb46da400
RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000cbef440
RBP: ffff8800a941f9e8 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff8675b2c0 R12: 0000000000000000
R13: ffffffff8b310900 R14: 0000000000000000 R15: 0000000000000000
FS:  00000000023ea940(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000040 CR3: 0000000087762000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400