IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
list_add corruption. prev->next should be next (ffffffff83745218), but was 0000000000000000. (prev=ffff8801fefbf1d8).
------------[ cut here ]------------
IPv6: ADDRCONF(NETDEV_CHANGE): lo: link becomes ready
kernel BUG at lib/list_debug.c:28!
invalid opcode: 0000 [#1] SMP PTI
IPv6: ADDRCONF(NETDEV_CHANGE): vcan0: link becomes ready
CPU: 1 PID: 3935 Comm: syz-executor4 Not tainted 4.18.0-rc8+ #32
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__list_add_valid+0x63/0xa0 lib/list_debug.c:26
Code: 89 c1 e8 00 b7 6c ff 0f 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 27 23 2f 83 31 c0 4c 89 c6 e8 dd b6 6c ff <0f> 0b 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 79 23 2f 83 
RSP: 0018:ffff8801e9a0bd68 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff8801e8a115d8 RCX: 0000000000040000
RDX: ffffc90006d37000 RSI: 0000000000002c74 RDI: 0000000000002c75
RBP: ffff8801e9a0bd68 R08: 0000000000000001 R09: ffffffff83a443ad
R10: 0000000000000000 R11: ffffffff81d91220 R12: 0000000000000000
R13: ffff8801e8a11400 R14: ffff8801fefbf1d8 R15: 0000000000000001
FS:  00007f6b60382700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32c24000 CR3: 00000001e88c6000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
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+0x17f/0x3a0 drivers/infiniband/core/cma.c:3354
 ucma_listen+0x119/0x150 drivers/infiniband/core/ucma.c:1096
 ucma_write+0x15d/0x170 drivers/infiniband/core/ucma.c:1680
 __vfs_write+0x49/0x1e0 fs/read_write.c:485
 vfs_write+0xf1/0x1d0 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+0x4a/0xc0 fs/read_write.c:607
 do_syscall_64+0x61/0x90 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
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:00007f6b60381c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f6b603826d4 RCX: 0000000000457089
RDX: 0000000000000010 RSI: 0000000020000340 RDI: 0000000000000003
RBP: 00000000009300a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004d6fd8 R14: 00000000004ca3d7 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 40be360545238096 ]---
RIP: 0010:__list_add_valid+0x63/0xa0 lib/list_debug.c:26
Code: 89 c1 e8 00 b7 6c ff 0f 0b 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 27 23 2f 83 31 c0 4c 89 c6 e8 dd b6 6c ff <0f> 0b 90 66 2e 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 79 23 2f 83 
RSP: 0018:ffff8801e9a0bd68 EFLAGS: 00010286
RAX: 0000000000000075 RBX: ffff8801e8a115d8 RCX: 0000000000040000
RDX: ffffc90006d37000 RSI: 0000000000002c74 RDI: 0000000000002c75
RBP: ffff8801e9a0bd68 R08: 0000000000000001 R09: ffffffff83a443ad
R10: 0000000000000000 R11: ffffffff81d91220 R12: 0000000000000000
R13: ffff8801e8a11400 R14: ffff8801fefbf1d8 R15: 0000000000000001
FS:  00007f6b60382700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32c24000 CR3: 00000001e88c6000 CR4: 00000000001406e0
DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600