list_add corruption. prev->next should be next (ffffffff89acc400), but was 00000000fffffffe. (prev=ffff8801242b95d8).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:28!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 7571 Comm: syz-executor0 Not tainted 4.18.0-rc8+ #34
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0x43c/0x450 lib/list_debug.c:26
Code: 0c 00 00 00 00 00 00 41 c7 87 20 03 00 00 00 00 00 00 48 c7 c7 a7 49 4f 89 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 b4 8e 38 fd <0f> 0b 66 90 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 
RSP: 0018:ffff8801262afa68 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002158 RDI: 0000000000002159
RBP: ffff8801262afad0 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff85031d70 R12: ffffffff89acc400
R13: 00000000fffffffe R14: 0000000000000000 R15: ffff88012921e178
FS:  00007fd8486ff700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2be22000 CR3: 0000000125a8a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __list_add include/linux/list.h:60 [inline]
 list_add_tail include/linux/list.h:93 [inline]
 cma_listen_on_all drivers/infiniband/core/cma.c:2328 [inline]
 rdma_listen+0x790/0x1100 drivers/infiniband/core/cma.c:3354
 ucma_listen+0x4fa/0x630 drivers/infiniband/core/ucma.c:1096
 ucma_write+0x57a/0x5f0 drivers/infiniband/core/ucma.c:1680
 __vfs_write+0x1a8/0xa50 fs/read_write.c:485
 vfs_write+0x467/0x8c0 fs/read_write.c:549
 ksys_write fs/read_write.c:598 [inline]
 __do_sys_write fs/read_write.c:610 [inline]
 __se_sys_write fs/read_write.c:607 [inline]
 __x64_sys_write+0x1b7/0x3c0 fs/read_write.c:607
 do_syscall_64+0x15b/0x220 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
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:00007fd8486fec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd8486ff6d4 RCX: 0000000000457089
RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d7448 R14: 00000000004ca592 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace a1643a40d5f82b87 ]---
RIP: 0010:__list_add_valid+0x43c/0x450 lib/list_debug.c:26
Code: 0c 00 00 00 00 00 00 41 c7 87 20 03 00 00 00 00 00 00 48 c7 c7 a7 49 4f 89 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 b4 8e 38 fd <0f> 0b 66 90 eb fe 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 55 48 
RSP: 0018:ffff8801262afa68 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002158 RDI: 0000000000002159
RBP: ffff8801262afad0 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff85031d70 R12: ffffffff89acc400
R13: 00000000fffffffe R14: 0000000000000000 R15: ffff88012921e178
FS:  00007fd8486ff700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2be22000 CR3: 0000000125a8a000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400