list_add corruption. prev->next should be next (ffffffff89edf8f0), but was 000000000000050d. (prev=ffff88011edc4de0).
------------[ cut here ]------------
kernel BUG at lib/list_debug.c:28!
invalid opcode: 0000 [#1] SMP PTI
CPU: 1 PID: 21629 Comm: syz-executor1 Not tainted 4.19.0-rc1+ #40
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 7b 08 91 89 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 84 7b 0c 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:ffff880042b4fa80 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002179 RDI: 000000000000217a
RBP: ffff880042b4fae8 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff854248c0 R12: ffffffff89edf8f0
R13: 000000000000050d R14: 0000000000000000 R15: ffff88012847e180
FS:  00007fc54124f700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072129c CR3: 000000003f724000 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:2364 [inline]
 rdma_listen+0x790/0x1100 drivers/infiniband/core/cma.c:3381
 ucma_listen+0x4fa/0x630 drivers/infiniband/core/ucma.c:1096
 ucma_write+0x594/0x600 drivers/infiniband/core/ucma.c:1680
 __vfs_write+0x1a8/0xa50 fs/read_write.c:485
 vfs_write+0x495/0x8e0 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+0x173/0x350 fs/read_write.c:607
 __x64_sys_write+0x4a/0x70 fs/read_write.c:607
 do_syscall_64+0xb8/0x100 arch/x86/entry/common.c:291
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
RIP: 0033:0x457099
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:00007fc54124ec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fc54124f6d4 RCX: 0000000000457099
RDX: 0000000000000010 RSI: 0000000020000140 RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d7c68 R14: 00000000004ca9bf R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 091d6b2d06492371 ]---
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 7b 08 91 89 31 c0 4c 89 e6 4c 89 ea 48 8b 4d c0 e8 84 7b 0c 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:ffff880042b4fa80 EFLAGS: 00010286
RAX: 0000000000000075 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000002179 RDI: 000000000000217a
RBP: ffff880042b4fae8 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff854248c0 R12: ffffffff89edf8f0
R13: 000000000000050d R14: 0000000000000000 R15: ffff88012847e180
FS:  00007fc54124f700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000072129c CR3: 000000003f724000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400