IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
BUG: unable to handle kernel NULL pointer dereference at 0000000000000008
IP: [<ffffffff81fa1d6d>] cma_bind_listen drivers/infiniband/core/cma.c:2436 [inline]
IP: [<ffffffff81fa1d6d>] rdma_listen+0x16d/0x260 drivers/infiniband/core/cma.c:2550
PGD ba8e8067 [   47.372560] kobject: 'loop5' (ffff8800baec18a0): kobject_uevent_env
kobject: 'loop5' (ffff8800baec18a0): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop1' (ffff8800baded0a0): kobject_uevent_env
kobject: 'loop1' (ffff8800baded0a0): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (ffff8800bafef0a0): kobject_uevent_env
kobject: 'loop4' (ffff8800bafef0a0): fill_kobj_path: path = '/devices/virtual/block/loop4'
kobject: 'loop3' (ffff8800bb5448a0): kobject_uevent_env
kobject: 'loop3' (ffff8800bb5448a0): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop2' (ffff8800bafef8a0): kobject_uevent_env
kobject: 'loop2' (ffff8800bafef8a0): fill_kobj_path: path = '/devices/virtual/block/loop2'
PUD b6f4e067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP 
Modules linked in:
CPU: 0 PID: 6662 Comm: syz-executor0 Not tainted 4.1.0 #1
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88020ca6cb10 ti: ffff88020c420000 task.ti: ffff88020c420000
RIP: 0010:[<ffffffff81fa1d6d>]  [<ffffffff81fa1d6d>] cma_bind_listen drivers/infiniband/core/cma.c:2436 [inline]
RIP: 0010:[<ffffffff81fa1d6d>]  [<ffffffff81fa1d6d>] rdma_listen+0x16d/0x260 drivers/infiniband/core/cma.c:2550
RSP: 0018:ffff88020c423d98  EFLAGS: 00010296
RAX: 0000000080000000 RBX: ffff8800b9c71c00 RCX: 0000000000000001
RDX: 0000000080000001 RSI: ffff88020ca6d378 RDI: 00000000ffffffff
RBP: ffff88020c423db8 R08: ffff88020c423d38 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000400 R14: 0000000000000010 R15: 00000000ffffffff
FS:  00007f3cf562a700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000008 CR3: 00000000b6fb2000 CR4: 00000000001407f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Stack:
 ffffffff812ac027 0000000020000208 ffff8800bb5acc40 ffff88020caa2e00
 ffff88020c423de8 ffffffff81fb16be ffffffff812ac027 0000000000000001
 0000000020000200 0000000000000010 ffff88020c423e28 ffffffff81fb0a7d
Call Trace:
 [<ffffffff81fb16be>] ucma_listen+0x6e/0x90 drivers/infiniband/core/ucma.c:965
 [<ffffffff81fb0a7d>] ucma_write+0x6d/0xc0 drivers/infiniband/core/ucma.c:1505
 [<ffffffff812fde93>] __vfs_write+0x23/0x100 fs/read_write.c:489
 [<ffffffff812fe5a1>] vfs_write+0xa1/0x1c0 fs/read_write.c:538
 [<ffffffff812ff244>] SYSC_write fs/read_write.c:585 [inline]
 [<ffffffff812ff244>] SyS_write+0x44/0xb0 fs/read_write.c:577
 [<ffffffff8261ebf2>] system_call_fastpath+0x16/0x7a
Code: 41 89 c4 75 c1 31 c0 48 83 c4 08 5b 41 5c 41 5d 5d c3 0f 1f 40 00 4c 8b a3 b0 01 00 00 31 f6 48 c7 c7 20 3f 37 83 e8 13 85 67 00 <49> 8b 44 24 08 48 83 38 00 74 40 31 d2 4c 89 e7 48 89 de e8 2b 
RIP  [<ffffffff81fa1d6d>] cma_bind_listen drivers/infiniband/core/cma.c:2435 [inline]
RIP  [<ffffffff81fa1d6d>] rdma_listen+0x16d/0x260 drivers/infiniband/core/cma.c:2550
 RSP <ffff88020c423d98>
CR2: 0000000000000008
---[ end trace 09557b44637c5880 ]---