general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 1 PID: 17853 Comm: syz-executor.3 Not tainted 5.6.0-rc3-next-20200228-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cma_bind_listen drivers/infiniband/core/cma.c:3501 [inline]
RIP: 0010:rdma_listen+0x2c4/0x910 drivers/infiniband/core/cma.c:3615
Code: 8b a5 c8 01 00 00 31 f6 48 c7 c7 00 52 3d 8a e8 62 ec 26 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc90008e17ca8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
RBP: ffff88809fd23000 R08: 0000000000000001 R09: fffffbfff147aa41
R10: ffffc90008e17ca8 R11: ffffffff8a3d5207 R12: 0000000000000000
R13: 0000000000000400 R14: ffff8880947dbe00 R15: 0000000000000008
FS:  00007efeb65ff700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000076c000 CR3: 000000009a3a8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ucma_listen+0x14d/0x1c0 drivers/infiniband/core/ucma.c:1092
 ucma_write+0x285/0x350 drivers/infiniband/core/ucma.c:1684
 __vfs_write+0x76/0x100 fs/read_write.c:494
 vfs_write+0x262/0x5c0 fs/read_write.c:558
 ksys_write+0x1e8/0x250 fs/read_write.c:611
 do_syscall_64+0xf6/0x790 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45c849
Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007efeb65fec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007efeb65ff6d4 RCX: 000000000045c849
RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000076bfa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000cc1 R14: 00000000004cee7d R15: 000000000076bfac
Modules linked in:
---[ end trace ea4f9926965649ba ]---
RIP: 0010:cma_bind_listen drivers/infiniband/core/cma.c:3501 [inline]
RIP: 0010:rdma_listen+0x2c4/0x910 drivers/infiniband/core/cma.c:3615
Code: 8b a5 c8 01 00 00 31 f6 48 c7 c7 00 52 3d 8a e8 62 ec 26 02 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a8 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffffc90008e17ca8 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000008 RDI: 0000000000000008
RBP: ffff88809fd23000 R08: 0000000000000001 R09: fffffbfff147aa41
R10: ffffc90008e17ca8 R11: ffffffff8a3d5207 R12: 0000000000000000
R13: 0000000000000400 R14: ffff8880947dbe00 R15: 0000000000000008
FS:  00007efeb65ff700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000076c000 CR3: 000000009a3a8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400